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tests: Run go mod vendor

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`go mod tidy` was a no-op.

Signed-off-by: Aurélien Bombo <abombo@microsoft.com>
This commit is contained in:
Aurélien Bombo 2025-03-14 17:42:13 +00:00
parent e9f88757ba
commit b965fe8239
502 changed files with 271360 additions and 0 deletions
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21
tests/vendor/github.com/cpuguy83/go-md2man/LICENSE.md generated vendored Normal file
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The MIT License (MIT)
Copyright (c) 2014 Brian Goff
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

20
tests/vendor/github.com/cpuguy83/go-md2man/md2man/md2man.go generated vendored Normal file
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package md2man
import (
"github.com/russross/blackfriday"
)
// Render converts a markdown document into a roff formatted document.
func Render(doc []byte) []byte {
renderer := RoffRenderer(0)
extensions := 0
extensions |= blackfriday.EXTENSION_NO_INTRA_EMPHASIS
extensions |= blackfriday.EXTENSION_TABLES
extensions |= blackfriday.EXTENSION_FENCED_CODE
extensions |= blackfriday.EXTENSION_AUTOLINK
extensions |= blackfriday.EXTENSION_SPACE_HEADERS
extensions |= blackfriday.EXTENSION_FOOTNOTES
extensions |= blackfriday.EXTENSION_TITLEBLOCK
return blackfriday.Markdown(doc, renderer, extensions)
}

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tests/vendor/github.com/cpuguy83/go-md2man/md2man/roff.go generated vendored Normal file
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package md2man
import (
"bytes"
"fmt"
"html"
"strings"
"github.com/russross/blackfriday"
)
type roffRenderer struct {
ListCounters []int
}
// RoffRenderer creates a new blackfriday Renderer for generating roff documents
// from markdown
func RoffRenderer(flags int) blackfriday.Renderer {
return &roffRenderer{}
}
func (r *roffRenderer) GetFlags() int {
return 0
}
func (r *roffRenderer) TitleBlock(out *bytes.Buffer, text []byte) {
out.WriteString(".TH ")
splitText := bytes.Split(text, []byte("\n"))
for i, line := range splitText {
line = bytes.TrimPrefix(line, []byte("% "))
if i == 0 {
line = bytes.Replace(line, []byte("("), []byte("\" \""), 1)
line = bytes.Replace(line, []byte(")"), []byte("\" \""), 1)
}
line = append([]byte("\""), line...)
line = append(line, []byte("\" ")...)
out.Write(line)
}
out.WriteString("\n")
// disable hyphenation
out.WriteString(".nh\n")
// disable justification (adjust text to left margin only)
out.WriteString(".ad l\n")
}
func (r *roffRenderer) BlockCode(out *bytes.Buffer, text []byte, lang string) {
out.WriteString("\n.PP\n.RS\n\n.nf\n")
escapeSpecialChars(out, text)
out.WriteString("\n.fi\n.RE\n")
}
func (r *roffRenderer) BlockQuote(out *bytes.Buffer, text []byte) {
out.WriteString("\n.PP\n.RS\n")
out.Write(text)
out.WriteString("\n.RE\n")
}
func (r *roffRenderer) BlockHtml(out *bytes.Buffer, text []byte) { // nolint: golint
out.Write(text)
}
func (r *roffRenderer) Header(out *bytes.Buffer, text func() bool, level int, id string) {
marker := out.Len()
switch {
case marker == 0:
// This is the doc header
out.WriteString(".TH ")
case level == 1:
out.WriteString("\n\n.SH ")
case level == 2:
out.WriteString("\n.SH ")
default:
out.WriteString("\n.SS ")
}
if !text() {
out.Truncate(marker)
return
}
}
func (r *roffRenderer) HRule(out *bytes.Buffer) {
out.WriteString("\n.ti 0\n\\l'\\n(.lu'\n")
}
func (r *roffRenderer) List(out *bytes.Buffer, text func() bool, flags int) {
marker := out.Len()
r.ListCounters = append(r.ListCounters, 1)
out.WriteString("\n.RS\n")
if !text() {
out.Truncate(marker)
return
}
r.ListCounters = r.ListCounters[:len(r.ListCounters)-1]
out.WriteString("\n.RE\n")
}
func (r *roffRenderer) ListItem(out *bytes.Buffer, text []byte, flags int) {
if flags&blackfriday.LIST_TYPE_ORDERED != 0 {
out.WriteString(fmt.Sprintf(".IP \"%3d.\" 5\n", r.ListCounters[len(r.ListCounters)-1]))
r.ListCounters[len(r.ListCounters)-1]++
} else {
out.WriteString(".IP \\(bu 2\n")
}
out.Write(text)
out.WriteString("\n")
}
func (r *roffRenderer) Paragraph(out *bytes.Buffer, text func() bool) {
marker := out.Len()
out.WriteString("\n.PP\n")
if !text() {
out.Truncate(marker)
return
}
if marker != 0 {
out.WriteString("\n")
}
}
func (r *roffRenderer) Table(out *bytes.Buffer, header []byte, body []byte, columnData []int) {
out.WriteString("\n.TS\nallbox;\n")
maxDelims := 0
lines := strings.Split(strings.TrimRight(string(header), "\n")+"\n"+strings.TrimRight(string(body), "\n"), "\n")
for _, w := range lines {
curDelims := strings.Count(w, "\t")
if curDelims > maxDelims {
maxDelims = curDelims
}
}
out.Write([]byte(strings.Repeat("l ", maxDelims+1) + "\n"))
out.Write([]byte(strings.Repeat("l ", maxDelims+1) + ".\n"))
out.Write(header)
if len(header) > 0 {
out.Write([]byte("\n"))
}
out.Write(body)
out.WriteString("\n.TE\n")
}
func (r *roffRenderer) TableRow(out *bytes.Buffer, text []byte) {
if out.Len() > 0 {
out.WriteString("\n")
}
out.Write(text)
}
func (r *roffRenderer) TableHeaderCell(out *bytes.Buffer, text []byte, align int) {
if out.Len() > 0 {
out.WriteString("\t")
}
if len(text) == 0 {
text = []byte{' '}
}
out.Write([]byte("\\fB\\fC" + string(text) + "\\fR"))
}
func (r *roffRenderer) TableCell(out *bytes.Buffer, text []byte, align int) {
if out.Len() > 0 {
out.WriteString("\t")
}
if len(text) > 30 {
text = append([]byte("T{\n"), text...)
text = append(text, []byte("\nT}")...)
}
if len(text) == 0 {
text = []byte{' '}
}
out.Write(text)
}
func (r *roffRenderer) Footnotes(out *bytes.Buffer, text func() bool) {
}
func (r *roffRenderer) FootnoteItem(out *bytes.Buffer, name, text []byte, flags int) {
}
func (r *roffRenderer) AutoLink(out *bytes.Buffer, link []byte, kind int) {
out.WriteString("\n\\[la]")
out.Write(link)
out.WriteString("\\[ra]")
}
func (r *roffRenderer) CodeSpan(out *bytes.Buffer, text []byte) {
out.WriteString("\\fB\\fC")
escapeSpecialChars(out, text)
out.WriteString("\\fR")
}
func (r *roffRenderer) DoubleEmphasis(out *bytes.Buffer, text []byte) {
out.WriteString("\\fB")
out.Write(text)
out.WriteString("\\fP")
}
func (r *roffRenderer) Emphasis(out *bytes.Buffer, text []byte) {
out.WriteString("\\fI")
out.Write(text)
out.WriteString("\\fP")
}
func (r *roffRenderer) Image(out *bytes.Buffer, link []byte, title []byte, alt []byte) {
}
func (r *roffRenderer) LineBreak(out *bytes.Buffer) {
out.WriteString("\n.br\n")
}
func (r *roffRenderer) Link(out *bytes.Buffer, link []byte, title []byte, content []byte) {
out.Write(content)
r.AutoLink(out, link, 0)
}
func (r *roffRenderer) RawHtmlTag(out *bytes.Buffer, tag []byte) { // nolint: golint
out.Write(tag)
}
func (r *roffRenderer) TripleEmphasis(out *bytes.Buffer, text []byte) {
out.WriteString("\\s+2")
out.Write(text)
out.WriteString("\\s-2")
}
func (r *roffRenderer) StrikeThrough(out *bytes.Buffer, text []byte) {
}
func (r *roffRenderer) FootnoteRef(out *bytes.Buffer, ref []byte, id int) {
}
func (r *roffRenderer) Entity(out *bytes.Buffer, entity []byte) {
out.WriteString(html.UnescapeString(string(entity)))
}
func (r *roffRenderer) NormalText(out *bytes.Buffer, text []byte) {
escapeSpecialChars(out, text)
}
func (r *roffRenderer) DocumentHeader(out *bytes.Buffer) {
}
func (r *roffRenderer) DocumentFooter(out *bytes.Buffer) {
}
func needsBackslash(c byte) bool {
for _, r := range []byte("-_&\\~") {
if c == r {
return true
}
}
return false
}
func escapeSpecialChars(out *bytes.Buffer, text []byte) {
for i := 0; i < len(text); i++ {
// escape initial apostrophe or period
if len(text) >= 1 && (text[0] == '\'' || text[0] == '.') {
out.WriteString("\\&")
}
// directly copy normal characters
org := i
for i < len(text) && !needsBackslash(text[i]) {
i++
}
if i > org {
out.Write(text[org:i])
}
// escape a character
if i >= len(text) {
break
}
out.WriteByte('\\')
out.WriteByte(text[i])
}
}

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tests/vendor/github.com/davecgh/go-spew/LICENSE generated vendored Normal file
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ISC License
Copyright (c) 2012-2016 Dave Collins <dave@davec.name>
Permission to use, copy, modify, and/or distribute this software for any
purpose with or without fee is hereby granted, provided that the above
copyright notice and this permission notice appear in all copies.
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

145
tests/vendor/github.com/davecgh/go-spew/spew/bypass.go generated vendored Normal file
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// Copyright (c) 2015-2016 Dave Collins <dave@davec.name>
//
// Permission to use, copy, modify, and distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice appear in all copies.
//
// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
// NOTE: Due to the following build constraints, this file will only be compiled
// when the code is not running on Google App Engine, compiled by GopherJS, and
// "-tags safe" is not added to the go build command line. The "disableunsafe"
// tag is deprecated and thus should not be used.
// Go versions prior to 1.4 are disabled because they use a different layout
// for interfaces which make the implementation of unsafeReflectValue more complex.
// +build !js,!appengine,!safe,!disableunsafe,go1.4
package spew
import (
"reflect"
"unsafe"
)
const (
// UnsafeDisabled is a build-time constant which specifies whether or
// not access to the unsafe package is available.
UnsafeDisabled = false
// ptrSize is the size of a pointer on the current arch.
ptrSize = unsafe.Sizeof((*byte)(nil))
)
type flag uintptr
var (
// flagRO indicates whether the value field of a reflect.Value
// is read-only.
flagRO flag
// flagAddr indicates whether the address of the reflect.Value's
// value may be taken.
flagAddr flag
)
// flagKindMask holds the bits that make up the kind
// part of the flags field. In all the supported versions,
// it is in the lower 5 bits.
const flagKindMask = flag(0x1f)
// Different versions of Go have used different
// bit layouts for the flags type. This table
// records the known combinations.
var okFlags = []struct {
ro, addr flag
}{{
// From Go 1.4 to 1.5
ro: 1 << 5,
addr: 1 << 7,
}, {
// Up to Go tip.
ro: 1<<5 | 1<<6,
addr: 1 << 8,
}}
var flagValOffset = func() uintptr {
field, ok := reflect.TypeOf(reflect.Value{}).FieldByName("flag")
if !ok {
panic("reflect.Value has no flag field")
}
return field.Offset
}()
// flagField returns a pointer to the flag field of a reflect.Value.
func flagField(v *reflect.Value) *flag {
return (*flag)(unsafe.Pointer(uintptr(unsafe.Pointer(v)) + flagValOffset))
}
// unsafeReflectValue converts the passed reflect.Value into a one that bypasses
// the typical safety restrictions preventing access to unaddressable and
// unexported data. It works by digging the raw pointer to the underlying
// value out of the protected value and generating a new unprotected (unsafe)
// reflect.Value to it.
//
// This allows us to check for implementations of the Stringer and error
// interfaces to be used for pretty printing ordinarily unaddressable and
// inaccessible values such as unexported struct fields.
func unsafeReflectValue(v reflect.Value) reflect.Value {
if !v.IsValid() || (v.CanInterface() && v.CanAddr()) {
return v
}
flagFieldPtr := flagField(&v)
*flagFieldPtr &^= flagRO
*flagFieldPtr |= flagAddr
return v
}
// Sanity checks against future reflect package changes
// to the type or semantics of the Value.flag field.
func init() {
field, ok := reflect.TypeOf(reflect.Value{}).FieldByName("flag")
if !ok {
panic("reflect.Value has no flag field")
}
if field.Type.Kind() != reflect.TypeOf(flag(0)).Kind() {
panic("reflect.Value flag field has changed kind")
}
type t0 int
var t struct {
A t0
// t0 will have flagEmbedRO set.
t0
// a will have flagStickyRO set
a t0
}
vA := reflect.ValueOf(t).FieldByName("A")
va := reflect.ValueOf(t).FieldByName("a")
vt0 := reflect.ValueOf(t).FieldByName("t0")
// Infer flagRO from the difference between the flags
// for the (otherwise identical) fields in t.
flagPublic := *flagField(&vA)
flagWithRO := *flagField(&va) | *flagField(&vt0)
flagRO = flagPublic ^ flagWithRO
// Infer flagAddr from the difference between a value
// taken from a pointer and not.
vPtrA := reflect.ValueOf(&t).Elem().FieldByName("A")
flagNoPtr := *flagField(&vA)
flagPtr := *flagField(&vPtrA)
flagAddr = flagNoPtr ^ flagPtr
// Check that the inferred flags tally with one of the known versions.
for _, f := range okFlags {
if flagRO == f.ro && flagAddr == f.addr {
return
}
}
panic("reflect.Value read-only flag has changed semantics")
}

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tests/vendor/github.com/davecgh/go-spew/spew/bypasssafe.go generated vendored Normal file
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// Copyright (c) 2015-2016 Dave Collins <dave@davec.name>
//
// Permission to use, copy, modify, and distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice appear in all copies.
//
// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
// NOTE: Due to the following build constraints, this file will only be compiled
// when the code is running on Google App Engine, compiled by GopherJS, or
// "-tags safe" is added to the go build command line. The "disableunsafe"
// tag is deprecated and thus should not be used.
// +build js appengine safe disableunsafe !go1.4
package spew
import "reflect"
const (
// UnsafeDisabled is a build-time constant which specifies whether or
// not access to the unsafe package is available.
UnsafeDisabled = true
)
// unsafeReflectValue typically converts the passed reflect.Value into a one
// that bypasses the typical safety restrictions preventing access to
// unaddressable and unexported data. However, doing this relies on access to
// the unsafe package. This is a stub version which simply returns the passed
// reflect.Value when the unsafe package is not available.
func unsafeReflectValue(v reflect.Value) reflect.Value {
return v
}

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tests/vendor/github.com/davecgh/go-spew/spew/common.go generated vendored Normal file
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/*
* Copyright (c) 2013-2016 Dave Collins <dave@davec.name>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
package spew
import (
"bytes"
"fmt"
"io"
"reflect"
"sort"
"strconv"
)
// Some constants in the form of bytes to avoid string overhead. This mirrors
// the technique used in the fmt package.
var (
panicBytes = []byte("(PANIC=")
plusBytes = []byte("+")
iBytes = []byte("i")
trueBytes = []byte("true")
falseBytes = []byte("false")
interfaceBytes = []byte("(interface {})")
commaNewlineBytes = []byte(",\n")
newlineBytes = []byte("\n")
openBraceBytes = []byte("{")
openBraceNewlineBytes = []byte("{\n")
closeBraceBytes = []byte("}")
asteriskBytes = []byte("*")
colonBytes = []byte(":")
colonSpaceBytes = []byte(": ")
openParenBytes = []byte("(")
closeParenBytes = []byte(")")
spaceBytes = []byte(" ")
pointerChainBytes = []byte("->")
nilAngleBytes = []byte("<nil>")
maxNewlineBytes = []byte("<max depth reached>\n")
maxShortBytes = []byte("<max>")
circularBytes = []byte("<already shown>")
circularShortBytes = []byte("<shown>")
invalidAngleBytes = []byte("<invalid>")
openBracketBytes = []byte("[")
closeBracketBytes = []byte("]")
percentBytes = []byte("%")
precisionBytes = []byte(".")
openAngleBytes = []byte("<")
closeAngleBytes = []byte(">")
openMapBytes = []byte("map[")
closeMapBytes = []byte("]")
lenEqualsBytes = []byte("len=")
capEqualsBytes = []byte("cap=")
)
// hexDigits is used to map a decimal value to a hex digit.
var hexDigits = "0123456789abcdef"
// catchPanic handles any panics that might occur during the handleMethods
// calls.
func catchPanic(w io.Writer, v reflect.Value) {
if err := recover(); err != nil {
w.Write(panicBytes)
fmt.Fprintf(w, "%v", err)
w.Write(closeParenBytes)
}
}
// handleMethods attempts to call the Error and String methods on the underlying
// type the passed reflect.Value represents and outputes the result to Writer w.
//
// It handles panics in any called methods by catching and displaying the error
// as the formatted value.
func handleMethods(cs *ConfigState, w io.Writer, v reflect.Value) (handled bool) {
// We need an interface to check if the type implements the error or
// Stringer interface. However, the reflect package won't give us an
// interface on certain things like unexported struct fields in order
// to enforce visibility rules. We use unsafe, when it's available,
// to bypass these restrictions since this package does not mutate the
// values.
if !v.CanInterface() {
if UnsafeDisabled {
return false
}
v = unsafeReflectValue(v)
}
// Choose whether or not to do error and Stringer interface lookups against
// the base type or a pointer to the base type depending on settings.
// Technically calling one of these methods with a pointer receiver can
// mutate the value, however, types which choose to satisify an error or
// Stringer interface with a pointer receiver should not be mutating their
// state inside these interface methods.
if !cs.DisablePointerMethods && !UnsafeDisabled && !v.CanAddr() {
v = unsafeReflectValue(v)
}
if v.CanAddr() {
v = v.Addr()
}
// Is it an error or Stringer?
switch iface := v.Interface().(type) {
case error:
defer catchPanic(w, v)
if cs.ContinueOnMethod {
w.Write(openParenBytes)
w.Write([]byte(iface.Error()))
w.Write(closeParenBytes)
w.Write(spaceBytes)
return false
}
w.Write([]byte(iface.Error()))
return true
case fmt.Stringer:
defer catchPanic(w, v)
if cs.ContinueOnMethod {
w.Write(openParenBytes)
w.Write([]byte(iface.String()))
w.Write(closeParenBytes)
w.Write(spaceBytes)
return false
}
w.Write([]byte(iface.String()))
return true
}
return false
}
// printBool outputs a boolean value as true or false to Writer w.
func printBool(w io.Writer, val bool) {
if val {
w.Write(trueBytes)
} else {
w.Write(falseBytes)
}
}
// printInt outputs a signed integer value to Writer w.
func printInt(w io.Writer, val int64, base int) {
w.Write([]byte(strconv.FormatInt(val, base)))
}
// printUint outputs an unsigned integer value to Writer w.
func printUint(w io.Writer, val uint64, base int) {
w.Write([]byte(strconv.FormatUint(val, base)))
}
// printFloat outputs a floating point value using the specified precision,
// which is expected to be 32 or 64bit, to Writer w.
func printFloat(w io.Writer, val float64, precision int) {
w.Write([]byte(strconv.FormatFloat(val, 'g', -1, precision)))
}
// printComplex outputs a complex value using the specified float precision
// for the real and imaginary parts to Writer w.
func printComplex(w io.Writer, c complex128, floatPrecision int) {
r := real(c)
w.Write(openParenBytes)
w.Write([]byte(strconv.FormatFloat(r, 'g', -1, floatPrecision)))
i := imag(c)
if i >= 0 {
w.Write(plusBytes)
}
w.Write([]byte(strconv.FormatFloat(i, 'g', -1, floatPrecision)))
w.Write(iBytes)
w.Write(closeParenBytes)
}
// printHexPtr outputs a uintptr formatted as hexadecimal with a leading '0x'
// prefix to Writer w.
func printHexPtr(w io.Writer, p uintptr) {
// Null pointer.
num := uint64(p)
if num == 0 {
w.Write(nilAngleBytes)
return
}
// Max uint64 is 16 bytes in hex + 2 bytes for '0x' prefix
buf := make([]byte, 18)
// It's simpler to construct the hex string right to left.
base := uint64(16)
i := len(buf) - 1
for num >= base {
buf[i] = hexDigits[num%base]
num /= base
i--
}
buf[i] = hexDigits[num]
// Add '0x' prefix.
i--
buf[i] = 'x'
i--
buf[i] = '0'
// Strip unused leading bytes.
buf = buf[i:]
w.Write(buf)
}
// valuesSorter implements sort.Interface to allow a slice of reflect.Value
// elements to be sorted.
type valuesSorter struct {
values []reflect.Value
strings []string // either nil or same len and values
cs *ConfigState
}
// newValuesSorter initializes a valuesSorter instance, which holds a set of
// surrogate keys on which the data should be sorted. It uses flags in
// ConfigState to decide if and how to populate those surrogate keys.
func newValuesSorter(values []reflect.Value, cs *ConfigState) sort.Interface {
vs := &valuesSorter{values: values, cs: cs}
if canSortSimply(vs.values[0].Kind()) {
return vs
}
if !cs.DisableMethods {
vs.strings = make([]string, len(values))
for i := range vs.values {
b := bytes.Buffer{}
if !handleMethods(cs, &b, vs.values[i]) {
vs.strings = nil
break
}
vs.strings[i] = b.String()
}
}
if vs.strings == nil && cs.SpewKeys {
vs.strings = make([]string, len(values))
for i := range vs.values {
vs.strings[i] = Sprintf("%#v", vs.values[i].Interface())
}
}
return vs
}
// canSortSimply tests whether a reflect.Kind is a primitive that can be sorted
// directly, or whether it should be considered for sorting by surrogate keys
// (if the ConfigState allows it).
func canSortSimply(kind reflect.Kind) bool {
// This switch parallels valueSortLess, except for the default case.
switch kind {
case reflect.Bool:
return true
case reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64, reflect.Int:
return true
case reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uint:
return true
case reflect.Float32, reflect.Float64:
return true
case reflect.String:
return true
case reflect.Uintptr:
return true
case reflect.Array:
return true
}
return false
}
// Len returns the number of values in the slice. It is part of the
// sort.Interface implementation.
func (s *valuesSorter) Len() int {
return len(s.values)
}
// Swap swaps the values at the passed indices. It is part of the
// sort.Interface implementation.
func (s *valuesSorter) Swap(i, j int) {
s.values[i], s.values[j] = s.values[j], s.values[i]
if s.strings != nil {
s.strings[i], s.strings[j] = s.strings[j], s.strings[i]
}
}
// valueSortLess returns whether the first value should sort before the second
// value. It is used by valueSorter.Less as part of the sort.Interface
// implementation.
func valueSortLess(a, b reflect.Value) bool {
switch a.Kind() {
case reflect.Bool:
return !a.Bool() && b.Bool()
case reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64, reflect.Int:
return a.Int() < b.Int()
case reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uint:
return a.Uint() < b.Uint()
case reflect.Float32, reflect.Float64:
return a.Float() < b.Float()
case reflect.String:
return a.String() < b.String()
case reflect.Uintptr:
return a.Uint() < b.Uint()
case reflect.Array:
// Compare the contents of both arrays.
l := a.Len()
for i := 0; i < l; i++ {
av := a.Index(i)
bv := b.Index(i)
if av.Interface() == bv.Interface() {
continue
}
return valueSortLess(av, bv)
}
}
return a.String() < b.String()
}
// Less returns whether the value at index i should sort before the
// value at index j. It is part of the sort.Interface implementation.
func (s *valuesSorter) Less(i, j int) bool {
if s.strings == nil {
return valueSortLess(s.values[i], s.values[j])
}
return s.strings[i] < s.strings[j]
}
// sortValues is a sort function that handles both native types and any type that
// can be converted to error or Stringer. Other inputs are sorted according to
// their Value.String() value to ensure display stability.
func sortValues(values []reflect.Value, cs *ConfigState) {
if len(values) == 0 {
return
}
sort.Sort(newValuesSorter(values, cs))
}

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/*
* Copyright (c) 2013-2016 Dave Collins <dave@davec.name>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
package spew
import (
"bytes"
"fmt"
"io"
"os"
)
// ConfigState houses the configuration options used by spew to format and
// display values. There is a global instance, Config, that is used to control
// all top-level Formatter and Dump functionality. Each ConfigState instance
// provides methods equivalent to the top-level functions.
//
// The zero value for ConfigState provides no indentation. You would typically
// want to set it to a space or a tab.
//
// Alternatively, you can use NewDefaultConfig to get a ConfigState instance
// with default settings. See the documentation of NewDefaultConfig for default
// values.
type ConfigState struct {
// Indent specifies the string to use for each indentation level. The
// global config instance that all top-level functions use set this to a
// single space by default. If you would like more indentation, you might
// set this to a tab with "\t" or perhaps two spaces with " ".
Indent string
// MaxDepth controls the maximum number of levels to descend into nested
// data structures. The default, 0, means there is no limit.
//
// NOTE: Circular data structures are properly detected, so it is not
// necessary to set this value unless you specifically want to limit deeply
// nested data structures.
MaxDepth int
// DisableMethods specifies whether or not error and Stringer interfaces are
// invoked for types that implement them.
DisableMethods bool
// DisablePointerMethods specifies whether or not to check for and invoke
// error and Stringer interfaces on types which only accept a pointer
// receiver when the current type is not a pointer.
//
// NOTE: This might be an unsafe action since calling one of these methods
// with a pointer receiver could technically mutate the value, however,
// in practice, types which choose to satisify an error or Stringer
// interface with a pointer receiver should not be mutating their state
// inside these interface methods. As a result, this option relies on
// access to the unsafe package, so it will not have any effect when
// running in environments without access to the unsafe package such as
// Google App Engine or with the "safe" build tag specified.
DisablePointerMethods bool
// DisablePointerAddresses specifies whether to disable the printing of
// pointer addresses. This is useful when diffing data structures in tests.
DisablePointerAddresses bool
// DisableCapacities specifies whether to disable the printing of capacities
// for arrays, slices, maps and channels. This is useful when diffing
// data structures in tests.
DisableCapacities bool
// ContinueOnMethod specifies whether or not recursion should continue once
// a custom error or Stringer interface is invoked. The default, false,
// means it will print the results of invoking the custom error or Stringer
// interface and return immediately instead of continuing to recurse into
// the internals of the data type.
//
// NOTE: This flag does not have any effect if method invocation is disabled
// via the DisableMethods or DisablePointerMethods options.
ContinueOnMethod bool
// SortKeys specifies map keys should be sorted before being printed. Use
// this to have a more deterministic, diffable output. Note that only
// native types (bool, int, uint, floats, uintptr and string) and types
// that support the error or Stringer interfaces (if methods are
// enabled) are supported, with other types sorted according to the
// reflect.Value.String() output which guarantees display stability.
SortKeys bool
// SpewKeys specifies that, as a last resort attempt, map keys should
// be spewed to strings and sorted by those strings. This is only
// considered if SortKeys is true.
SpewKeys bool
}
// Config is the active configuration of the top-level functions.
// The configuration can be changed by modifying the contents of spew.Config.
var Config = ConfigState{Indent: " "}
// Errorf is a wrapper for fmt.Errorf that treats each argument as if it were
// passed with a Formatter interface returned by c.NewFormatter. It returns
// the formatted string as a value that satisfies error. See NewFormatter
// for formatting details.
//
// This function is shorthand for the following syntax:
//
// fmt.Errorf(format, c.NewFormatter(a), c.NewFormatter(b))
func (c *ConfigState) Errorf(format string, a ...interface{}) (err error) {
return fmt.Errorf(format, c.convertArgs(a)...)
}
// Fprint is a wrapper for fmt.Fprint that treats each argument as if it were
// passed with a Formatter interface returned by c.NewFormatter. It returns
// the number of bytes written and any write error encountered. See
// NewFormatter for formatting details.
//
// This function is shorthand for the following syntax:
//
// fmt.Fprint(w, c.NewFormatter(a), c.NewFormatter(b))
func (c *ConfigState) Fprint(w io.Writer, a ...interface{}) (n int, err error) {
return fmt.Fprint(w, c.convertArgs(a)...)
}
// Fprintf is a wrapper for fmt.Fprintf that treats each argument as if it were
// passed with a Formatter interface returned by c.NewFormatter. It returns
// the number of bytes written and any write error encountered. See
// NewFormatter for formatting details.
//
// This function is shorthand for the following syntax:
//
// fmt.Fprintf(w, format, c.NewFormatter(a), c.NewFormatter(b))
func (c *ConfigState) Fprintf(w io.Writer, format string, a ...interface{}) (n int, err error) {
return fmt.Fprintf(w, format, c.convertArgs(a)...)
}
// Fprintln is a wrapper for fmt.Fprintln that treats each argument as if it
// passed with a Formatter interface returned by c.NewFormatter. See
// NewFormatter for formatting details.
//
// This function is shorthand for the following syntax:
//
// fmt.Fprintln(w, c.NewFormatter(a), c.NewFormatter(b))
func (c *ConfigState) Fprintln(w io.Writer, a ...interface{}) (n int, err error) {
return fmt.Fprintln(w, c.convertArgs(a)...)
}
// Print is a wrapper for fmt.Print that treats each argument as if it were
// passed with a Formatter interface returned by c.NewFormatter. It returns
// the number of bytes written and any write error encountered. See
// NewFormatter for formatting details.
//
// This function is shorthand for the following syntax:
//
// fmt.Print(c.NewFormatter(a), c.NewFormatter(b))
func (c *ConfigState) Print(a ...interface{}) (n int, err error) {
return fmt.Print(c.convertArgs(a)...)
}
// Printf is a wrapper for fmt.Printf that treats each argument as if it were
// passed with a Formatter interface returned by c.NewFormatter. It returns
// the number of bytes written and any write error encountered. See
// NewFormatter for formatting details.
//
// This function is shorthand for the following syntax:
//
// fmt.Printf(format, c.NewFormatter(a), c.NewFormatter(b))
func (c *ConfigState) Printf(format string, a ...interface{}) (n int, err error) {
return fmt.Printf(format, c.convertArgs(a)...)
}
// Println is a wrapper for fmt.Println that treats each argument as if it were
// passed with a Formatter interface returned by c.NewFormatter. It returns
// the number of bytes written and any write error encountered. See
// NewFormatter for formatting details.
//
// This function is shorthand for the following syntax:
//
// fmt.Println(c.NewFormatter(a), c.NewFormatter(b))
func (c *ConfigState) Println(a ...interface{}) (n int, err error) {
return fmt.Println(c.convertArgs(a)...)
}
// Sprint is a wrapper for fmt.Sprint that treats each argument as if it were
// passed with a Formatter interface returned by c.NewFormatter. It returns
// the resulting string. See NewFormatter for formatting details.
//
// This function is shorthand for the following syntax:
//
// fmt.Sprint(c.NewFormatter(a), c.NewFormatter(b))
func (c *ConfigState) Sprint(a ...interface{}) string {
return fmt.Sprint(c.convertArgs(a)...)
}
// Sprintf is a wrapper for fmt.Sprintf that treats each argument as if it were
// passed with a Formatter interface returned by c.NewFormatter. It returns
// the resulting string. See NewFormatter for formatting details.
//
// This function is shorthand for the following syntax:
//
// fmt.Sprintf(format, c.NewFormatter(a), c.NewFormatter(b))
func (c *ConfigState) Sprintf(format string, a ...interface{}) string {
return fmt.Sprintf(format, c.convertArgs(a)...)
}
// Sprintln is a wrapper for fmt.Sprintln that treats each argument as if it
// were passed with a Formatter interface returned by c.NewFormatter. It
// returns the resulting string. See NewFormatter for formatting details.
//
// This function is shorthand for the following syntax:
//
// fmt.Sprintln(c.NewFormatter(a), c.NewFormatter(b))
func (c *ConfigState) Sprintln(a ...interface{}) string {
return fmt.Sprintln(c.convertArgs(a)...)
}
/*
NewFormatter returns a custom formatter that satisfies the fmt.Formatter
interface. As a result, it integrates cleanly with standard fmt package
printing functions. The formatter is useful for inline printing of smaller data
types similar to the standard %v format specifier.
The custom formatter only responds to the %v (most compact), %+v (adds pointer
addresses), %#v (adds types), and %#+v (adds types and pointer addresses) verb
combinations. Any other verbs such as %x and %q will be sent to the the
standard fmt package for formatting. In addition, the custom formatter ignores
the width and precision arguments (however they will still work on the format
specifiers not handled by the custom formatter).
Typically this function shouldn't be called directly. It is much easier to make
use of the custom formatter by calling one of the convenience functions such as
c.Printf, c.Println, or c.Printf.
*/
func (c *ConfigState) NewFormatter(v interface{}) fmt.Formatter {
return newFormatter(c, v)
}
// Fdump formats and displays the passed arguments to io.Writer w. It formats
// exactly the same as Dump.
func (c *ConfigState) Fdump(w io.Writer, a ...interface{}) {
fdump(c, w, a...)
}
/*
Dump displays the passed parameters to standard out with newlines, customizable
indentation, and additional debug information such as complete types and all
pointer addresses used to indirect to the final value. It provides the
following features over the built-in printing facilities provided by the fmt
package:
* Pointers are dereferenced and followed
* Circular data structures are detected and handled properly
* Custom Stringer/error interfaces are optionally invoked, including
on unexported types
* Custom types which only implement the Stringer/error interfaces via
a pointer receiver are optionally invoked when passing non-pointer
variables
* Byte arrays and slices are dumped like the hexdump -C command which
includes offsets, byte values in hex, and ASCII output
The configuration options are controlled by modifying the public members
of c. See ConfigState for options documentation.
See Fdump if you would prefer dumping to an arbitrary io.Writer or Sdump to
get the formatted result as a string.
*/
func (c *ConfigState) Dump(a ...interface{}) {
fdump(c, os.Stdout, a...)
}
// Sdump returns a string with the passed arguments formatted exactly the same
// as Dump.
func (c *ConfigState) Sdump(a ...interface{}) string {
var buf bytes.Buffer
fdump(c, &buf, a...)
return buf.String()
}
// convertArgs accepts a slice of arguments and returns a slice of the same
// length with each argument converted to a spew Formatter interface using
// the ConfigState associated with s.
func (c *ConfigState) convertArgs(args []interface{}) (formatters []interface{}) {
formatters = make([]interface{}, len(args))
for index, arg := range args {
formatters[index] = newFormatter(c, arg)
}
return formatters
}
// NewDefaultConfig returns a ConfigState with the following default settings.
//
// Indent: " "
// MaxDepth: 0
// DisableMethods: false
// DisablePointerMethods: false
// ContinueOnMethod: false
// SortKeys: false
func NewDefaultConfig() *ConfigState {
return &ConfigState{Indent: " "}
}

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/*
* Copyright (c) 2013-2016 Dave Collins <dave@davec.name>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/*
Package spew implements a deep pretty printer for Go data structures to aid in
debugging.
A quick overview of the additional features spew provides over the built-in
printing facilities for Go data types are as follows:
* Pointers are dereferenced and followed
* Circular data structures are detected and handled properly
* Custom Stringer/error interfaces are optionally invoked, including
on unexported types
* Custom types which only implement the Stringer/error interfaces via
a pointer receiver are optionally invoked when passing non-pointer
variables
* Byte arrays and slices are dumped like the hexdump -C command which
includes offsets, byte values in hex, and ASCII output (only when using
Dump style)
There are two different approaches spew allows for dumping Go data structures:
* Dump style which prints with newlines, customizable indentation,
and additional debug information such as types and all pointer addresses
used to indirect to the final value
* A custom Formatter interface that integrates cleanly with the standard fmt
package and replaces %v, %+v, %#v, and %#+v to provide inline printing
similar to the default %v while providing the additional functionality
outlined above and passing unsupported format verbs such as %x and %q
along to fmt
Quick Start
This section demonstrates how to quickly get started with spew. See the
sections below for further details on formatting and configuration options.
To dump a variable with full newlines, indentation, type, and pointer
information use Dump, Fdump, or Sdump:
spew.Dump(myVar1, myVar2, ...)
spew.Fdump(someWriter, myVar1, myVar2, ...)
str := spew.Sdump(myVar1, myVar2, ...)
Alternatively, if you would prefer to use format strings with a compacted inline
printing style, use the convenience wrappers Printf, Fprintf, etc with
%v (most compact), %+v (adds pointer addresses), %#v (adds types), or
%#+v (adds types and pointer addresses):
spew.Printf("myVar1: %v -- myVar2: %+v", myVar1, myVar2)
spew.Printf("myVar3: %#v -- myVar4: %#+v", myVar3, myVar4)
spew.Fprintf(someWriter, "myVar1: %v -- myVar2: %+v", myVar1, myVar2)
spew.Fprintf(someWriter, "myVar3: %#v -- myVar4: %#+v", myVar3, myVar4)
Configuration Options
Configuration of spew is handled by fields in the ConfigState type. For
convenience, all of the top-level functions use a global state available
via the spew.Config global.
It is also possible to create a ConfigState instance that provides methods
equivalent to the top-level functions. This allows concurrent configuration
options. See the ConfigState documentation for more details.
The following configuration options are available:
* Indent
String to use for each indentation level for Dump functions.
It is a single space by default. A popular alternative is "\t".
* MaxDepth
Maximum number of levels to descend into nested data structures.
There is no limit by default.
* DisableMethods
Disables invocation of error and Stringer interface methods.
Method invocation is enabled by default.
* DisablePointerMethods
Disables invocation of error and Stringer interface methods on types
which only accept pointer receivers from non-pointer variables.
Pointer method invocation is enabled by default.
* DisablePointerAddresses
DisablePointerAddresses specifies whether to disable the printing of
pointer addresses. This is useful when diffing data structures in tests.
* DisableCapacities
DisableCapacities specifies whether to disable the printing of
capacities for arrays, slices, maps and channels. This is useful when
diffing data structures in tests.
* ContinueOnMethod
Enables recursion into types after invoking error and Stringer interface
methods. Recursion after method invocation is disabled by default.
* SortKeys
Specifies map keys should be sorted before being printed. Use
this to have a more deterministic, diffable output. Note that
only native types (bool, int, uint, floats, uintptr and string)
and types which implement error or Stringer interfaces are
supported with other types sorted according to the
reflect.Value.String() output which guarantees display
stability. Natural map order is used by default.
* SpewKeys
Specifies that, as a last resort attempt, map keys should be
spewed to strings and sorted by those strings. This is only
considered if SortKeys is true.
Dump Usage
Simply call spew.Dump with a list of variables you want to dump:
spew.Dump(myVar1, myVar2, ...)
You may also call spew.Fdump if you would prefer to output to an arbitrary
io.Writer. For example, to dump to standard error:
spew.Fdump(os.Stderr, myVar1, myVar2, ...)
A third option is to call spew.Sdump to get the formatted output as a string:
str := spew.Sdump(myVar1, myVar2, ...)
Sample Dump Output
See the Dump example for details on the setup of the types and variables being
shown here.
(main.Foo) {
unexportedField: (*main.Bar)(0xf84002e210)({
flag: (main.Flag) flagTwo,
data: (uintptr) <nil>
}),
ExportedField: (map[interface {}]interface {}) (len=1) {
(string) (len=3) "one": (bool) true
}
}
Byte (and uint8) arrays and slices are displayed uniquely like the hexdump -C
command as shown.
([]uint8) (len=32 cap=32) {
00000000 11 12 13 14 15 16 17 18 19 1a 1b 1c 1d 1e 1f 20 |............... |
00000010 21 22 23 24 25 26 27 28 29 2a 2b 2c 2d 2e 2f 30 |!"#$%&'()*+,-./0|
00000020 31 32 |12|
}
Custom Formatter
Spew provides a custom formatter that implements the fmt.Formatter interface
so that it integrates cleanly with standard fmt package printing functions. The
formatter is useful for inline printing of smaller data types similar to the
standard %v format specifier.
The custom formatter only responds to the %v (most compact), %+v (adds pointer
addresses), %#v (adds types), or %#+v (adds types and pointer addresses) verb
combinations. Any other verbs such as %x and %q will be sent to the the
standard fmt package for formatting. In addition, the custom formatter ignores
the width and precision arguments (however they will still work on the format
specifiers not handled by the custom formatter).
Custom Formatter Usage
The simplest way to make use of the spew custom formatter is to call one of the
convenience functions such as spew.Printf, spew.Println, or spew.Printf. The
functions have syntax you are most likely already familiar with:
spew.Printf("myVar1: %v -- myVar2: %+v", myVar1, myVar2)
spew.Printf("myVar3: %#v -- myVar4: %#+v", myVar3, myVar4)
spew.Println(myVar, myVar2)
spew.Fprintf(os.Stderr, "myVar1: %v -- myVar2: %+v", myVar1, myVar2)
spew.Fprintf(os.Stderr, "myVar3: %#v -- myVar4: %#+v", myVar3, myVar4)
See the Index for the full list convenience functions.
Sample Formatter Output
Double pointer to a uint8:
%v: <**>5
%+v: <**>(0xf8400420d0->0xf8400420c8)5
%#v: (**uint8)5
%#+v: (**uint8)(0xf8400420d0->0xf8400420c8)5
Pointer to circular struct with a uint8 field and a pointer to itself:
%v: <*>{1 <*><shown>}
%+v: <*>(0xf84003e260){ui8:1 c:<*>(0xf84003e260)<shown>}
%#v: (*main.circular){ui8:(uint8)1 c:(*main.circular)<shown>}
%#+v: (*main.circular)(0xf84003e260){ui8:(uint8)1 c:(*main.circular)(0xf84003e260)<shown>}
See the Printf example for details on the setup of variables being shown
here.
Errors
Since it is possible for custom Stringer/error interfaces to panic, spew
detects them and handles them internally by printing the panic information
inline with the output. Since spew is intended to provide deep pretty printing
capabilities on structures, it intentionally does not return any errors.
*/
package spew

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/*
* Copyright (c) 2013-2016 Dave Collins <dave@davec.name>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
package spew
import (
"bytes"
"encoding/hex"
"fmt"
"io"
"os"
"reflect"
"regexp"
"strconv"
"strings"
)
var (
// uint8Type is a reflect.Type representing a uint8. It is used to
// convert cgo types to uint8 slices for hexdumping.
uint8Type = reflect.TypeOf(uint8(0))
// cCharRE is a regular expression that matches a cgo char.
// It is used to detect character arrays to hexdump them.
cCharRE = regexp.MustCompile(`^.*\._Ctype_char$`)
// cUnsignedCharRE is a regular expression that matches a cgo unsigned
// char. It is used to detect unsigned character arrays to hexdump
// them.
cUnsignedCharRE = regexp.MustCompile(`^.*\._Ctype_unsignedchar$`)
// cUint8tCharRE is a regular expression that matches a cgo uint8_t.
// It is used to detect uint8_t arrays to hexdump them.
cUint8tCharRE = regexp.MustCompile(`^.*\._Ctype_uint8_t$`)
)
// dumpState contains information about the state of a dump operation.
type dumpState struct {
w io.Writer
depth int
pointers map[uintptr]int
ignoreNextType bool
ignoreNextIndent bool
cs *ConfigState
}
// indent performs indentation according to the depth level and cs.Indent
// option.
func (d *dumpState) indent() {
if d.ignoreNextIndent {
d.ignoreNextIndent = false
return
}
d.w.Write(bytes.Repeat([]byte(d.cs.Indent), d.depth))
}
// unpackValue returns values inside of non-nil interfaces when possible.
// This is useful for data types like structs, arrays, slices, and maps which
// can contain varying types packed inside an interface.
func (d *dumpState) unpackValue(v reflect.Value) reflect.Value {
if v.Kind() == reflect.Interface && !v.IsNil() {
v = v.Elem()
}
return v
}
// dumpPtr handles formatting of pointers by indirecting them as necessary.
func (d *dumpState) dumpPtr(v reflect.Value) {
// Remove pointers at or below the current depth from map used to detect
// circular refs.
for k, depth := range d.pointers {
if depth >= d.depth {
delete(d.pointers, k)
}
}
// Keep list of all dereferenced pointers to show later.
pointerChain := make([]uintptr, 0)
// Figure out how many levels of indirection there are by dereferencing
// pointers and unpacking interfaces down the chain while detecting circular
// references.
nilFound := false
cycleFound := false
indirects := 0
ve := v
for ve.Kind() == reflect.Ptr {
if ve.IsNil() {
nilFound = true
break
}
indirects++
addr := ve.Pointer()
pointerChain = append(pointerChain, addr)
if pd, ok := d.pointers[addr]; ok && pd < d.depth {
cycleFound = true
indirects--
break
}
d.pointers[addr] = d.depth
ve = ve.Elem()
if ve.Kind() == reflect.Interface {
if ve.IsNil() {
nilFound = true
break
}
ve = ve.Elem()
}
}
// Display type information.
d.w.Write(openParenBytes)
d.w.Write(bytes.Repeat(asteriskBytes, indirects))
d.w.Write([]byte(ve.Type().String()))
d.w.Write(closeParenBytes)
// Display pointer information.
if !d.cs.DisablePointerAddresses && len(pointerChain) > 0 {
d.w.Write(openParenBytes)
for i, addr := range pointerChain {
if i > 0 {
d.w.Write(pointerChainBytes)
}
printHexPtr(d.w, addr)
}
d.w.Write(closeParenBytes)
}
// Display dereferenced value.
d.w.Write(openParenBytes)
switch {
case nilFound:
d.w.Write(nilAngleBytes)
case cycleFound:
d.w.Write(circularBytes)
default:
d.ignoreNextType = true
d.dump(ve)
}
d.w.Write(closeParenBytes)
}
// dumpSlice handles formatting of arrays and slices. Byte (uint8 under
// reflection) arrays and slices are dumped in hexdump -C fashion.
func (d *dumpState) dumpSlice(v reflect.Value) {
// Determine whether this type should be hex dumped or not. Also,
// for types which should be hexdumped, try to use the underlying data
// first, then fall back to trying to convert them to a uint8 slice.
var buf []uint8
doConvert := false
doHexDump := false
numEntries := v.Len()
if numEntries > 0 {
vt := v.Index(0).Type()
vts := vt.String()
switch {
// C types that need to be converted.
case cCharRE.MatchString(vts):
fallthrough
case cUnsignedCharRE.MatchString(vts):
fallthrough
case cUint8tCharRE.MatchString(vts):
doConvert = true
// Try to use existing uint8 slices and fall back to converting
// and copying if that fails.
case vt.Kind() == reflect.Uint8:
// We need an addressable interface to convert the type
// to a byte slice. However, the reflect package won't
// give us an interface on certain things like
// unexported struct fields in order to enforce
// visibility rules. We use unsafe, when available, to
// bypass these restrictions since this package does not
// mutate the values.
vs := v
if !vs.CanInterface() || !vs.CanAddr() {
vs = unsafeReflectValue(vs)
}
if !UnsafeDisabled {
vs = vs.Slice(0, numEntries)
// Use the existing uint8 slice if it can be
// type asserted.
iface := vs.Interface()
if slice, ok := iface.([]uint8); ok {
buf = slice
doHexDump = true
break
}
}
// The underlying data needs to be converted if it can't
// be type asserted to a uint8 slice.
doConvert = true
}
// Copy and convert the underlying type if needed.
if doConvert && vt.ConvertibleTo(uint8Type) {
// Convert and copy each element into a uint8 byte
// slice.
buf = make([]uint8, numEntries)
for i := 0; i < numEntries; i++ {
vv := v.Index(i)
buf[i] = uint8(vv.Convert(uint8Type).Uint())
}
doHexDump = true
}
}
// Hexdump the entire slice as needed.
if doHexDump {
indent := strings.Repeat(d.cs.Indent, d.depth)
str := indent + hex.Dump(buf)
str = strings.Replace(str, "\n", "\n"+indent, -1)
str = strings.TrimRight(str, d.cs.Indent)
d.w.Write([]byte(str))
return
}
// Recursively call dump for each item.
for i := 0; i < numEntries; i++ {
d.dump(d.unpackValue(v.Index(i)))
if i < (numEntries - 1) {
d.w.Write(commaNewlineBytes)
} else {
d.w.Write(newlineBytes)
}
}
}
// dump is the main workhorse for dumping a value. It uses the passed reflect
// value to figure out what kind of object we are dealing with and formats it
// appropriately. It is a recursive function, however circular data structures
// are detected and handled properly.
func (d *dumpState) dump(v reflect.Value) {
// Handle invalid reflect values immediately.
kind := v.Kind()
if kind == reflect.Invalid {
d.w.Write(invalidAngleBytes)
return
}
// Handle pointers specially.
if kind == reflect.Ptr {
d.indent()
d.dumpPtr(v)
return
}
// Print type information unless already handled elsewhere.
if !d.ignoreNextType {
d.indent()
d.w.Write(openParenBytes)
d.w.Write([]byte(v.Type().String()))
d.w.Write(closeParenBytes)
d.w.Write(spaceBytes)
}
d.ignoreNextType = false
// Display length and capacity if the built-in len and cap functions
// work with the value's kind and the len/cap itself is non-zero.
valueLen, valueCap := 0, 0
switch v.Kind() {
case reflect.Array, reflect.Slice, reflect.Chan:
valueLen, valueCap = v.Len(), v.Cap()
case reflect.Map, reflect.String:
valueLen = v.Len()
}
if valueLen != 0 || !d.cs.DisableCapacities && valueCap != 0 {
d.w.Write(openParenBytes)
if valueLen != 0 {
d.w.Write(lenEqualsBytes)
printInt(d.w, int64(valueLen), 10)
}
if !d.cs.DisableCapacities && valueCap != 0 {
if valueLen != 0 {
d.w.Write(spaceBytes)
}
d.w.Write(capEqualsBytes)
printInt(d.w, int64(valueCap), 10)
}
d.w.Write(closeParenBytes)
d.w.Write(spaceBytes)
}
// Call Stringer/error interfaces if they exist and the handle methods flag
// is enabled
if !d.cs.DisableMethods {
if (kind != reflect.Invalid) && (kind != reflect.Interface) {
if handled := handleMethods(d.cs, d.w, v); handled {
return
}
}
}
switch kind {
case reflect.Invalid:
// Do nothing. We should never get here since invalid has already
// been handled above.
case reflect.Bool:
printBool(d.w, v.Bool())
case reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64, reflect.Int:
printInt(d.w, v.Int(), 10)
case reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uint:
printUint(d.w, v.Uint(), 10)
case reflect.Float32:
printFloat(d.w, v.Float(), 32)
case reflect.Float64:
printFloat(d.w, v.Float(), 64)
case reflect.Complex64:
printComplex(d.w, v.Complex(), 32)
case reflect.Complex128:
printComplex(d.w, v.Complex(), 64)
case reflect.Slice:
if v.IsNil() {
d.w.Write(nilAngleBytes)
break
}
fallthrough
case reflect.Array:
d.w.Write(openBraceNewlineBytes)
d.depth++
if (d.cs.MaxDepth != 0) && (d.depth > d.cs.MaxDepth) {
d.indent()
d.w.Write(maxNewlineBytes)
} else {
d.dumpSlice(v)
}
d.depth--
d.indent()
d.w.Write(closeBraceBytes)
case reflect.String:
d.w.Write([]byte(strconv.Quote(v.String())))
case reflect.Interface:
// The only time we should get here is for nil interfaces due to
// unpackValue calls.
if v.IsNil() {
d.w.Write(nilAngleBytes)
}
case reflect.Ptr:
// Do nothing. We should never get here since pointers have already
// been handled above.
case reflect.Map:
// nil maps should be indicated as different than empty maps
if v.IsNil() {
d.w.Write(nilAngleBytes)
break
}
d.w.Write(openBraceNewlineBytes)
d.depth++
if (d.cs.MaxDepth != 0) && (d.depth > d.cs.MaxDepth) {
d.indent()
d.w.Write(maxNewlineBytes)
} else {
numEntries := v.Len()
keys := v.MapKeys()
if d.cs.SortKeys {
sortValues(keys, d.cs)
}
for i, key := range keys {
d.dump(d.unpackValue(key))
d.w.Write(colonSpaceBytes)
d.ignoreNextIndent = true
d.dump(d.unpackValue(v.MapIndex(key)))
if i < (numEntries - 1) {
d.w.Write(commaNewlineBytes)
} else {
d.w.Write(newlineBytes)
}
}
}
d.depth--
d.indent()
d.w.Write(closeBraceBytes)
case reflect.Struct:
d.w.Write(openBraceNewlineBytes)
d.depth++
if (d.cs.MaxDepth != 0) && (d.depth > d.cs.MaxDepth) {
d.indent()
d.w.Write(maxNewlineBytes)
} else {
vt := v.Type()
numFields := v.NumField()
for i := 0; i < numFields; i++ {
d.indent()
vtf := vt.Field(i)
d.w.Write([]byte(vtf.Name))
d.w.Write(colonSpaceBytes)
d.ignoreNextIndent = true
d.dump(d.unpackValue(v.Field(i)))
if i < (numFields - 1) {
d.w.Write(commaNewlineBytes)
} else {
d.w.Write(newlineBytes)
}
}
}
d.depth--
d.indent()
d.w.Write(closeBraceBytes)
case reflect.Uintptr:
printHexPtr(d.w, uintptr(v.Uint()))
case reflect.UnsafePointer, reflect.Chan, reflect.Func:
printHexPtr(d.w, v.Pointer())
// There were not any other types at the time this code was written, but
// fall back to letting the default fmt package handle it in case any new
// types are added.
default:
if v.CanInterface() {
fmt.Fprintf(d.w, "%v", v.Interface())
} else {
fmt.Fprintf(d.w, "%v", v.String())
}
}
}
// fdump is a helper function to consolidate the logic from the various public
// methods which take varying writers and config states.
func fdump(cs *ConfigState, w io.Writer, a ...interface{}) {
for _, arg := range a {
if arg == nil {
w.Write(interfaceBytes)
w.Write(spaceBytes)
w.Write(nilAngleBytes)
w.Write(newlineBytes)
continue
}
d := dumpState{w: w, cs: cs}
d.pointers = make(map[uintptr]int)
d.dump(reflect.ValueOf(arg))
d.w.Write(newlineBytes)
}
}
// Fdump formats and displays the passed arguments to io.Writer w. It formats
// exactly the same as Dump.
func Fdump(w io.Writer, a ...interface{}) {
fdump(&Config, w, a...)
}
// Sdump returns a string with the passed arguments formatted exactly the same
// as Dump.
func Sdump(a ...interface{}) string {
var buf bytes.Buffer
fdump(&Config, &buf, a...)
return buf.String()
}
/*
Dump displays the passed parameters to standard out with newlines, customizable
indentation, and additional debug information such as complete types and all
pointer addresses used to indirect to the final value. It provides the
following features over the built-in printing facilities provided by the fmt
package:
* Pointers are dereferenced and followed
* Circular data structures are detected and handled properly
* Custom Stringer/error interfaces are optionally invoked, including
on unexported types
* Custom types which only implement the Stringer/error interfaces via
a pointer receiver are optionally invoked when passing non-pointer
variables
* Byte arrays and slices are dumped like the hexdump -C command which
includes offsets, byte values in hex, and ASCII output
The configuration options are controlled by an exported package global,
spew.Config. See ConfigState for options documentation.
See Fdump if you would prefer dumping to an arbitrary io.Writer or Sdump to
get the formatted result as a string.
*/
func Dump(a ...interface{}) {
fdump(&Config, os.Stdout, a...)
}

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/*
* Copyright (c) 2013-2016 Dave Collins <dave@davec.name>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
package spew
import (
"bytes"
"fmt"
"reflect"
"strconv"
"strings"
)
// supportedFlags is a list of all the character flags supported by fmt package.
const supportedFlags = "0-+# "
// formatState implements the fmt.Formatter interface and contains information
// about the state of a formatting operation. The NewFormatter function can
// be used to get a new Formatter which can be used directly as arguments
// in standard fmt package printing calls.
type formatState struct {
value interface{}
fs fmt.State
depth int
pointers map[uintptr]int
ignoreNextType bool
cs *ConfigState
}
// buildDefaultFormat recreates the original format string without precision
// and width information to pass in to fmt.Sprintf in the case of an
// unrecognized type. Unless new types are added to the language, this
// function won't ever be called.
func (f *formatState) buildDefaultFormat() (format string) {
buf := bytes.NewBuffer(percentBytes)
for _, flag := range supportedFlags {
if f.fs.Flag(int(flag)) {
buf.WriteRune(flag)
}
}
buf.WriteRune('v')
format = buf.String()
return format
}
// constructOrigFormat recreates the original format string including precision
// and width information to pass along to the standard fmt package. This allows
// automatic deferral of all format strings this package doesn't support.
func (f *formatState) constructOrigFormat(verb rune) (format string) {
buf := bytes.NewBuffer(percentBytes)
for _, flag := range supportedFlags {
if f.fs.Flag(int(flag)) {
buf.WriteRune(flag)
}
}
if width, ok := f.fs.Width(); ok {
buf.WriteString(strconv.Itoa(width))
}
if precision, ok := f.fs.Precision(); ok {
buf.Write(precisionBytes)
buf.WriteString(strconv.Itoa(precision))
}
buf.WriteRune(verb)
format = buf.String()
return format
}
// unpackValue returns values inside of non-nil interfaces when possible and
// ensures that types for values which have been unpacked from an interface
// are displayed when the show types flag is also set.
// This is useful for data types like structs, arrays, slices, and maps which
// can contain varying types packed inside an interface.
func (f *formatState) unpackValue(v reflect.Value) reflect.Value {
if v.Kind() == reflect.Interface {
f.ignoreNextType = false
if !v.IsNil() {
v = v.Elem()
}
}
return v
}
// formatPtr handles formatting of pointers by indirecting them as necessary.
func (f *formatState) formatPtr(v reflect.Value) {
// Display nil if top level pointer is nil.
showTypes := f.fs.Flag('#')
if v.IsNil() && (!showTypes || f.ignoreNextType) {
f.fs.Write(nilAngleBytes)
return
}
// Remove pointers at or below the current depth from map used to detect
// circular refs.
for k, depth := range f.pointers {
if depth >= f.depth {
delete(f.pointers, k)
}
}
// Keep list of all dereferenced pointers to possibly show later.
pointerChain := make([]uintptr, 0)
// Figure out how many levels of indirection there are by derferencing
// pointers and unpacking interfaces down the chain while detecting circular
// references.
nilFound := false
cycleFound := false
indirects := 0
ve := v
for ve.Kind() == reflect.Ptr {
if ve.IsNil() {
nilFound = true
break
}
indirects++
addr := ve.Pointer()
pointerChain = append(pointerChain, addr)
if pd, ok := f.pointers[addr]; ok && pd < f.depth {
cycleFound = true
indirects--
break
}
f.pointers[addr] = f.depth
ve = ve.Elem()
if ve.Kind() == reflect.Interface {
if ve.IsNil() {
nilFound = true
break
}
ve = ve.Elem()
}
}
// Display type or indirection level depending on flags.
if showTypes && !f.ignoreNextType {
f.fs.Write(openParenBytes)
f.fs.Write(bytes.Repeat(asteriskBytes, indirects))
f.fs.Write([]byte(ve.Type().String()))
f.fs.Write(closeParenBytes)
} else {
if nilFound || cycleFound {
indirects += strings.Count(ve.Type().String(), "*")
}
f.fs.Write(openAngleBytes)
f.fs.Write([]byte(strings.Repeat("*", indirects)))
f.fs.Write(closeAngleBytes)
}
// Display pointer information depending on flags.
if f.fs.Flag('+') && (len(pointerChain) > 0) {
f.fs.Write(openParenBytes)
for i, addr := range pointerChain {
if i > 0 {
f.fs.Write(pointerChainBytes)
}
printHexPtr(f.fs, addr)
}
f.fs.Write(closeParenBytes)
}
// Display dereferenced value.
switch {
case nilFound:
f.fs.Write(nilAngleBytes)
case cycleFound:
f.fs.Write(circularShortBytes)
default:
f.ignoreNextType = true
f.format(ve)
}
}
// format is the main workhorse for providing the Formatter interface. It
// uses the passed reflect value to figure out what kind of object we are
// dealing with and formats it appropriately. It is a recursive function,
// however circular data structures are detected and handled properly.
func (f *formatState) format(v reflect.Value) {
// Handle invalid reflect values immediately.
kind := v.Kind()
if kind == reflect.Invalid {
f.fs.Write(invalidAngleBytes)
return
}
// Handle pointers specially.
if kind == reflect.Ptr {
f.formatPtr(v)
return
}
// Print type information unless already handled elsewhere.
if !f.ignoreNextType && f.fs.Flag('#') {
f.fs.Write(openParenBytes)
f.fs.Write([]byte(v.Type().String()))
f.fs.Write(closeParenBytes)
}
f.ignoreNextType = false
// Call Stringer/error interfaces if they exist and the handle methods
// flag is enabled.
if !f.cs.DisableMethods {
if (kind != reflect.Invalid) && (kind != reflect.Interface) {
if handled := handleMethods(f.cs, f.fs, v); handled {
return
}
}
}
switch kind {
case reflect.Invalid:
// Do nothing. We should never get here since invalid has already
// been handled above.
case reflect.Bool:
printBool(f.fs, v.Bool())
case reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64, reflect.Int:
printInt(f.fs, v.Int(), 10)
case reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uint:
printUint(f.fs, v.Uint(), 10)
case reflect.Float32:
printFloat(f.fs, v.Float(), 32)
case reflect.Float64:
printFloat(f.fs, v.Float(), 64)
case reflect.Complex64:
printComplex(f.fs, v.Complex(), 32)
case reflect.Complex128:
printComplex(f.fs, v.Complex(), 64)
case reflect.Slice:
if v.IsNil() {
f.fs.Write(nilAngleBytes)
break
}
fallthrough
case reflect.Array:
f.fs.Write(openBracketBytes)
f.depth++
if (f.cs.MaxDepth != 0) && (f.depth > f.cs.MaxDepth) {
f.fs.Write(maxShortBytes)
} else {
numEntries := v.Len()
for i := 0; i < numEntries; i++ {
if i > 0 {
f.fs.Write(spaceBytes)
}
f.ignoreNextType = true
f.format(f.unpackValue(v.Index(i)))
}
}
f.depth--
f.fs.Write(closeBracketBytes)
case reflect.String:
f.fs.Write([]byte(v.String()))
case reflect.Interface:
// The only time we should get here is for nil interfaces due to
// unpackValue calls.
if v.IsNil() {
f.fs.Write(nilAngleBytes)
}
case reflect.Ptr:
// Do nothing. We should never get here since pointers have already
// been handled above.
case reflect.Map:
// nil maps should be indicated as different than empty maps
if v.IsNil() {
f.fs.Write(nilAngleBytes)
break
}
f.fs.Write(openMapBytes)
f.depth++
if (f.cs.MaxDepth != 0) && (f.depth > f.cs.MaxDepth) {
f.fs.Write(maxShortBytes)
} else {
keys := v.MapKeys()
if f.cs.SortKeys {
sortValues(keys, f.cs)
}
for i, key := range keys {
if i > 0 {
f.fs.Write(spaceBytes)
}
f.ignoreNextType = true
f.format(f.unpackValue(key))
f.fs.Write(colonBytes)
f.ignoreNextType = true
f.format(f.unpackValue(v.MapIndex(key)))
}
}
f.depth--
f.fs.Write(closeMapBytes)
case reflect.Struct:
numFields := v.NumField()
f.fs.Write(openBraceBytes)
f.depth++
if (f.cs.MaxDepth != 0) && (f.depth > f.cs.MaxDepth) {
f.fs.Write(maxShortBytes)
} else {
vt := v.Type()
for i := 0; i < numFields; i++ {
if i > 0 {
f.fs.Write(spaceBytes)
}
vtf := vt.Field(i)
if f.fs.Flag('+') || f.fs.Flag('#') {
f.fs.Write([]byte(vtf.Name))
f.fs.Write(colonBytes)
}
f.format(f.unpackValue(v.Field(i)))
}
}
f.depth--
f.fs.Write(closeBraceBytes)
case reflect.Uintptr:
printHexPtr(f.fs, uintptr(v.Uint()))
case reflect.UnsafePointer, reflect.Chan, reflect.Func:
printHexPtr(f.fs, v.Pointer())
// There were not any other types at the time this code was written, but
// fall back to letting the default fmt package handle it if any get added.
default:
format := f.buildDefaultFormat()
if v.CanInterface() {
fmt.Fprintf(f.fs, format, v.Interface())
} else {
fmt.Fprintf(f.fs, format, v.String())
}
}
}
// Format satisfies the fmt.Formatter interface. See NewFormatter for usage
// details.
func (f *formatState) Format(fs fmt.State, verb rune) {
f.fs = fs
// Use standard formatting for verbs that are not v.
if verb != 'v' {
format := f.constructOrigFormat(verb)
fmt.Fprintf(fs, format, f.value)
return
}
if f.value == nil {
if fs.Flag('#') {
fs.Write(interfaceBytes)
}
fs.Write(nilAngleBytes)
return
}
f.format(reflect.ValueOf(f.value))
}
// newFormatter is a helper function to consolidate the logic from the various
// public methods which take varying config states.
func newFormatter(cs *ConfigState, v interface{}) fmt.Formatter {
fs := &formatState{value: v, cs: cs}
fs.pointers = make(map[uintptr]int)
return fs
}
/*
NewFormatter returns a custom formatter that satisfies the fmt.Formatter
interface. As a result, it integrates cleanly with standard fmt package
printing functions. The formatter is useful for inline printing of smaller data
types similar to the standard %v format specifier.
The custom formatter only responds to the %v (most compact), %+v (adds pointer
addresses), %#v (adds types), or %#+v (adds types and pointer addresses) verb
combinations. Any other verbs such as %x and %q will be sent to the the
standard fmt package for formatting. In addition, the custom formatter ignores
the width and precision arguments (however they will still work on the format
specifiers not handled by the custom formatter).
Typically this function shouldn't be called directly. It is much easier to make
use of the custom formatter by calling one of the convenience functions such as
Printf, Println, or Fprintf.
*/
func NewFormatter(v interface{}) fmt.Formatter {
return newFormatter(&Config, v)
}

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/*
* Copyright (c) 2013-2016 Dave Collins <dave@davec.name>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
package spew
import (
"fmt"
"io"
)
// Errorf is a wrapper for fmt.Errorf that treats each argument as if it were
// passed with a default Formatter interface returned by NewFormatter. It
// returns the formatted string as a value that satisfies error. See
// NewFormatter for formatting details.
//
// This function is shorthand for the following syntax:
//
// fmt.Errorf(format, spew.NewFormatter(a), spew.NewFormatter(b))
func Errorf(format string, a ...interface{}) (err error) {
return fmt.Errorf(format, convertArgs(a)...)
}
// Fprint is a wrapper for fmt.Fprint that treats each argument as if it were
// passed with a default Formatter interface returned by NewFormatter. It
// returns the number of bytes written and any write error encountered. See
// NewFormatter for formatting details.
//
// This function is shorthand for the following syntax:
//
// fmt.Fprint(w, spew.NewFormatter(a), spew.NewFormatter(b))
func Fprint(w io.Writer, a ...interface{}) (n int, err error) {
return fmt.Fprint(w, convertArgs(a)...)
}
// Fprintf is a wrapper for fmt.Fprintf that treats each argument as if it were
// passed with a default Formatter interface returned by NewFormatter. It
// returns the number of bytes written and any write error encountered. See
// NewFormatter for formatting details.
//
// This function is shorthand for the following syntax:
//
// fmt.Fprintf(w, format, spew.NewFormatter(a), spew.NewFormatter(b))
func Fprintf(w io.Writer, format string, a ...interface{}) (n int, err error) {
return fmt.Fprintf(w, format, convertArgs(a)...)
}
// Fprintln is a wrapper for fmt.Fprintln that treats each argument as if it
// passed with a default Formatter interface returned by NewFormatter. See
// NewFormatter for formatting details.
//
// This function is shorthand for the following syntax:
//
// fmt.Fprintln(w, spew.NewFormatter(a), spew.NewFormatter(b))
func Fprintln(w io.Writer, a ...interface{}) (n int, err error) {
return fmt.Fprintln(w, convertArgs(a)...)
}
// Print is a wrapper for fmt.Print that treats each argument as if it were
// passed with a default Formatter interface returned by NewFormatter. It
// returns the number of bytes written and any write error encountered. See
// NewFormatter for formatting details.
//
// This function is shorthand for the following syntax:
//
// fmt.Print(spew.NewFormatter(a), spew.NewFormatter(b))
func Print(a ...interface{}) (n int, err error) {
return fmt.Print(convertArgs(a)...)
}
// Printf is a wrapper for fmt.Printf that treats each argument as if it were
// passed with a default Formatter interface returned by NewFormatter. It
// returns the number of bytes written and any write error encountered. See
// NewFormatter for formatting details.
//
// This function is shorthand for the following syntax:
//
// fmt.Printf(format, spew.NewFormatter(a), spew.NewFormatter(b))
func Printf(format string, a ...interface{}) (n int, err error) {
return fmt.Printf(format, convertArgs(a)...)
}
// Println is a wrapper for fmt.Println that treats each argument as if it were
// passed with a default Formatter interface returned by NewFormatter. It
// returns the number of bytes written and any write error encountered. See
// NewFormatter for formatting details.
//
// This function is shorthand for the following syntax:
//
// fmt.Println(spew.NewFormatter(a), spew.NewFormatter(b))
func Println(a ...interface{}) (n int, err error) {
return fmt.Println(convertArgs(a)...)
}
// Sprint is a wrapper for fmt.Sprint that treats each argument as if it were
// passed with a default Formatter interface returned by NewFormatter. It
// returns the resulting string. See NewFormatter for formatting details.
//
// This function is shorthand for the following syntax:
//
// fmt.Sprint(spew.NewFormatter(a), spew.NewFormatter(b))
func Sprint(a ...interface{}) string {
return fmt.Sprint(convertArgs(a)...)
}
// Sprintf is a wrapper for fmt.Sprintf that treats each argument as if it were
// passed with a default Formatter interface returned by NewFormatter. It
// returns the resulting string. See NewFormatter for formatting details.
//
// This function is shorthand for the following syntax:
//
// fmt.Sprintf(format, spew.NewFormatter(a), spew.NewFormatter(b))
func Sprintf(format string, a ...interface{}) string {
return fmt.Sprintf(format, convertArgs(a)...)
}
// Sprintln is a wrapper for fmt.Sprintln that treats each argument as if it
// were passed with a default Formatter interface returned by NewFormatter. It
// returns the resulting string. See NewFormatter for formatting details.
//
// This function is shorthand for the following syntax:
//
// fmt.Sprintln(spew.NewFormatter(a), spew.NewFormatter(b))
func Sprintln(a ...interface{}) string {
return fmt.Sprintln(convertArgs(a)...)
}
// convertArgs accepts a slice of arguments and returns a slice of the same
// length with each argument converted to a default spew Formatter interface.
func convertArgs(args []interface{}) (formatters []interface{}) {
formatters = make([]interface{}, len(args))
for index, arg := range args {
formatters[index] = NewFormatter(arg)
}
return formatters
}

16
tests/vendor/github.com/mattn/go-runewidth/.travis.yml generated vendored Normal file
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@ -0,0 +1,16 @@
language: go
sudo: false
go:
- 1.13.x
- tip
before_install:
- go get -t -v ./...
script:
- go generate
- git diff --cached --exit-code
- ./go.test.sh
after_success:
- bash <(curl -s https://codecov.io/bash)

21
tests/vendor/github.com/mattn/go-runewidth/LICENSE generated vendored Normal file
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@ -0,0 +1,21 @@
The MIT License (MIT)
Copyright (c) 2016 Yasuhiro Matsumoto
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

27
tests/vendor/github.com/mattn/go-runewidth/README.md generated vendored Normal file
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go-runewidth
============
[![Build Status](https://travis-ci.org/mattn/go-runewidth.png?branch=master)](https://travis-ci.org/mattn/go-runewidth)
[![Codecov](https://codecov.io/gh/mattn/go-runewidth/branch/master/graph/badge.svg)](https://codecov.io/gh/mattn/go-runewidth)
[![GoDoc](https://godoc.org/github.com/mattn/go-runewidth?status.svg)](http://godoc.org/github.com/mattn/go-runewidth)
[![Go Report Card](https://goreportcard.com/badge/github.com/mattn/go-runewidth)](https://goreportcard.com/report/github.com/mattn/go-runewidth)
Provides functions to get fixed width of the character or string.
Usage
-----
```go
runewidth.StringWidth("つのだ☆HIRO") == 12
```
Author
------
Yasuhiro Matsumoto
License
-------
under the MIT License: http://mattn.mit-license.org/2013

12
tests/vendor/github.com/mattn/go-runewidth/go.test.sh generated vendored Normal file
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#!/usr/bin/env bash
set -e
echo "" > coverage.txt
for d in $(go list ./... | grep -v vendor); do
go test -race -coverprofile=profile.out -covermode=atomic "$d"
if [ -f profile.out ]; then
cat profile.out >> coverage.txt
rm profile.out
fi
done

273
tests/vendor/github.com/mattn/go-runewidth/runewidth.go generated vendored Normal file
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package runewidth
import (
"os"
"github.com/rivo/uniseg"
)
//go:generate go run script/generate.go
var (
// EastAsianWidth will be set true if the current locale is CJK
EastAsianWidth bool
// StrictEmojiNeutral should be set false if handle broken fonts
StrictEmojiNeutral bool = true
// DefaultCondition is a condition in current locale
DefaultCondition = &Condition{
EastAsianWidth: false,
StrictEmojiNeutral: true,
}
)
func init() {
handleEnv()
}
func handleEnv() {
env := os.Getenv("RUNEWIDTH_EASTASIAN")
if env == "" {
EastAsianWidth = IsEastAsian()
} else {
EastAsianWidth = env == "1"
}
// update DefaultCondition
DefaultCondition.EastAsianWidth = EastAsianWidth
}
type interval struct {
first rune
last rune
}
type table []interval
func inTables(r rune, ts ...table) bool {
for _, t := range ts {
if inTable(r, t) {
return true
}
}
return false
}
func inTable(r rune, t table) bool {
if r < t[0].first {
return false
}
bot := 0
top := len(t) - 1
for top >= bot {
mid := (bot + top) >> 1
switch {
case t[mid].last < r:
bot = mid + 1
case t[mid].first > r:
top = mid - 1
default:
return true
}
}
return false
}
var private = table{
{0x00E000, 0x00F8FF}, {0x0F0000, 0x0FFFFD}, {0x100000, 0x10FFFD},
}
var nonprint = table{
{0x0000, 0x001F}, {0x007F, 0x009F}, {0x00AD, 0x00AD},
{0x070F, 0x070F}, {0x180B, 0x180E}, {0x200B, 0x200F},
{0x2028, 0x202E}, {0x206A, 0x206F}, {0xD800, 0xDFFF},
{0xFEFF, 0xFEFF}, {0xFFF9, 0xFFFB}, {0xFFFE, 0xFFFF},
}
// Condition have flag EastAsianWidth whether the current locale is CJK or not.
type Condition struct {
EastAsianWidth bool
StrictEmojiNeutral bool
}
// NewCondition return new instance of Condition which is current locale.
func NewCondition() *Condition {
return &Condition{
EastAsianWidth: EastAsianWidth,
StrictEmojiNeutral: StrictEmojiNeutral,
}
}
// RuneWidth returns the number of cells in r.
// See http://www.unicode.org/reports/tr11/
func (c *Condition) RuneWidth(r rune) int {
// optimized version, verified by TestRuneWidthChecksums()
if !c.EastAsianWidth {
switch {
case r < 0x20 || r > 0x10FFFF:
return 0
case (r >= 0x7F && r <= 0x9F) || r == 0xAD: // nonprint
return 0
case r < 0x300:
return 1
case inTable(r, narrow):
return 1
case inTables(r, nonprint, combining):
return 0
case inTable(r, doublewidth):
return 2
default:
return 1
}
} else {
switch {
case r < 0 || r > 0x10FFFF || inTables(r, nonprint, combining):
return 0
case inTable(r, narrow):
return 1
case inTables(r, ambiguous, doublewidth):
return 2
case !c.StrictEmojiNeutral && inTables(r, ambiguous, emoji, narrow):
return 2
default:
return 1
}
}
}
// StringWidth return width as you can see
func (c *Condition) StringWidth(s string) (width int) {
g := uniseg.NewGraphemes(s)
for g.Next() {
var chWidth int
for _, r := range g.Runes() {
chWidth = c.RuneWidth(r)
if chWidth > 0 {
break // Our best guess at this point is to use the width of the first non-zero-width rune.
}
}
width += chWidth
}
return
}
// Truncate return string truncated with w cells
func (c *Condition) Truncate(s string, w int, tail string) string {
if c.StringWidth(s) <= w {
return s
}
w -= c.StringWidth(tail)
var width int
pos := len(s)
g := uniseg.NewGraphemes(s)
for g.Next() {
var chWidth int
for _, r := range g.Runes() {
chWidth = c.RuneWidth(r)
if chWidth > 0 {
break // See StringWidth() for details.
}
}
if width+chWidth > w {
pos, _ = g.Positions()
break
}
width += chWidth
}
return s[:pos] + tail
}
// Wrap return string wrapped with w cells
func (c *Condition) Wrap(s string, w int) string {
width := 0
out := ""
for _, r := range []rune(s) {
cw := c.RuneWidth(r)
if r == '\n' {
out += string(r)
width = 0
continue
} else if width+cw > w {
out += "\n"
width = 0
out += string(r)
width += cw
continue
}
out += string(r)
width += cw
}
return out
}
// FillLeft return string filled in left by spaces in w cells
func (c *Condition) FillLeft(s string, w int) string {
width := c.StringWidth(s)
count := w - width
if count > 0 {
b := make([]byte, count)
for i := range b {
b[i] = ' '
}
return string(b) + s
}
return s
}
// FillRight return string filled in left by spaces in w cells
func (c *Condition) FillRight(s string, w int) string {
width := c.StringWidth(s)
count := w - width
if count > 0 {
b := make([]byte, count)
for i := range b {
b[i] = ' '
}
return s + string(b)
}
return s
}
// RuneWidth returns the number of cells in r.
// See http://www.unicode.org/reports/tr11/
func RuneWidth(r rune) int {
return DefaultCondition.RuneWidth(r)
}
// IsAmbiguousWidth returns whether is ambiguous width or not.
func IsAmbiguousWidth(r rune) bool {
return inTables(r, private, ambiguous)
}
// IsNeutralWidth returns whether is neutral width or not.
func IsNeutralWidth(r rune) bool {
return inTable(r, neutral)
}
// StringWidth return width as you can see
func StringWidth(s string) (width int) {
return DefaultCondition.StringWidth(s)
}
// Truncate return string truncated with w cells
func Truncate(s string, w int, tail string) string {
return DefaultCondition.Truncate(s, w, tail)
}
// Wrap return string wrapped with w cells
func Wrap(s string, w int) string {
return DefaultCondition.Wrap(s, w)
}
// FillLeft return string filled in left by spaces in w cells
func FillLeft(s string, w int) string {
return DefaultCondition.FillLeft(s, w)
}
// FillRight return string filled in left by spaces in w cells
func FillRight(s string, w int) string {
return DefaultCondition.FillRight(s, w)
}

8
tests/vendor/github.com/mattn/go-runewidth/runewidth_appengine.go generated vendored Normal file
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@ -0,0 +1,8 @@
// +build appengine
package runewidth
// IsEastAsian return true if the current locale is CJK
func IsEastAsian() bool {
return false
}

9
tests/vendor/github.com/mattn/go-runewidth/runewidth_js.go generated vendored Normal file
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@ -0,0 +1,9 @@
// +build js
// +build !appengine
package runewidth
func IsEastAsian() bool {
// TODO: Implement this for the web. Detect east asian in a compatible way, and return true.
return false
}

82
tests/vendor/github.com/mattn/go-runewidth/runewidth_posix.go generated vendored Normal file
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// +build !windows
// +build !js
// +build !appengine
package runewidth
import (
"os"
"regexp"
"strings"
)
var reLoc = regexp.MustCompile(`^[a-z][a-z][a-z]?(?:_[A-Z][A-Z])?\.(.+)`)
var mblenTable = map[string]int{
"utf-8": 6,
"utf8": 6,
"jis": 8,
"eucjp": 3,
"euckr": 2,
"euccn": 2,
"sjis": 2,
"cp932": 2,
"cp51932": 2,
"cp936": 2,
"cp949": 2,
"cp950": 2,
"big5": 2,
"gbk": 2,
"gb2312": 2,
}
func isEastAsian(locale string) bool {
charset := strings.ToLower(locale)
r := reLoc.FindStringSubmatch(locale)
if len(r) == 2 {
charset = strings.ToLower(r[1])
}
if strings.HasSuffix(charset, "@cjk_narrow") {
return false
}
for pos, b := range []byte(charset) {
if b == '@' {
charset = charset[:pos]
break
}
}
max := 1
if m, ok := mblenTable[charset]; ok {
max = m
}
if max > 1 && (charset[0] != 'u' ||
strings.HasPrefix(locale, "ja") ||
strings.HasPrefix(locale, "ko") ||
strings.HasPrefix(locale, "zh")) {
return true
}
return false
}
// IsEastAsian return true if the current locale is CJK
func IsEastAsian() bool {
locale := os.Getenv("LC_ALL")
if locale == "" {
locale = os.Getenv("LC_CTYPE")
}
if locale == "" {
locale = os.Getenv("LANG")
}
// ignore C locale
if locale == "POSIX" || locale == "C" {
return false
}
if len(locale) > 1 && locale[0] == 'C' && (locale[1] == '.' || locale[1] == '-') {
return false
}
return isEastAsian(locale)
}

439
tests/vendor/github.com/mattn/go-runewidth/runewidth_table.go generated vendored Normal file
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// Code generated by script/generate.go. DO NOT EDIT.
package runewidth
var combining = table{
{0x0300, 0x036F}, {0x0483, 0x0489}, {0x07EB, 0x07F3},
{0x0C00, 0x0C00}, {0x0C04, 0x0C04}, {0x0D00, 0x0D01},
{0x135D, 0x135F}, {0x1A7F, 0x1A7F}, {0x1AB0, 0x1AC0},
{0x1B6B, 0x1B73}, {0x1DC0, 0x1DF9}, {0x1DFB, 0x1DFF},
{0x20D0, 0x20F0}, {0x2CEF, 0x2CF1}, {0x2DE0, 0x2DFF},
{0x3099, 0x309A}, {0xA66F, 0xA672}, {0xA674, 0xA67D},
{0xA69E, 0xA69F}, {0xA6F0, 0xA6F1}, {0xA8E0, 0xA8F1},
{0xFE20, 0xFE2F}, {0x101FD, 0x101FD}, {0x10376, 0x1037A},
{0x10EAB, 0x10EAC}, {0x10F46, 0x10F50}, {0x11300, 0x11301},
{0x1133B, 0x1133C}, {0x11366, 0x1136C}, {0x11370, 0x11374},
{0x16AF0, 0x16AF4}, {0x1D165, 0x1D169}, {0x1D16D, 0x1D172},
{0x1D17B, 0x1D182}, {0x1D185, 0x1D18B}, {0x1D1AA, 0x1D1AD},
{0x1D242, 0x1D244}, {0x1E000, 0x1E006}, {0x1E008, 0x1E018},
{0x1E01B, 0x1E021}, {0x1E023, 0x1E024}, {0x1E026, 0x1E02A},
{0x1E8D0, 0x1E8D6},
}
var doublewidth = table{
{0x1100, 0x115F}, {0x231A, 0x231B}, {0x2329, 0x232A},
{0x23E9, 0x23EC}, {0x23F0, 0x23F0}, {0x23F3, 0x23F3},
{0x25FD, 0x25FE}, {0x2614, 0x2615}, {0x2648, 0x2653},
{0x267F, 0x267F}, {0x2693, 0x2693}, {0x26A1, 0x26A1},
{0x26AA, 0x26AB}, {0x26BD, 0x26BE}, {0x26C4, 0x26C5},
{0x26CE, 0x26CE}, {0x26D4, 0x26D4}, {0x26EA, 0x26EA},
{0x26F2, 0x26F3}, {0x26F5, 0x26F5}, {0x26FA, 0x26FA},
{0x26FD, 0x26FD}, {0x2705, 0x2705}, {0x270A, 0x270B},
{0x2728, 0x2728}, {0x274C, 0x274C}, {0x274E, 0x274E},
{0x2753, 0x2755}, {0x2757, 0x2757}, {0x2795, 0x2797},
{0x27B0, 0x27B0}, {0x27BF, 0x27BF}, {0x2B1B, 0x2B1C},
{0x2B50, 0x2B50}, {0x2B55, 0x2B55}, {0x2E80, 0x2E99},
{0x2E9B, 0x2EF3}, {0x2F00, 0x2FD5}, {0x2FF0, 0x2FFB},
{0x3000, 0x303E}, {0x3041, 0x3096}, {0x3099, 0x30FF},
{0x3105, 0x312F}, {0x3131, 0x318E}, {0x3190, 0x31E3},
{0x31F0, 0x321E}, {0x3220, 0x3247}, {0x3250, 0x4DBF},
{0x4E00, 0xA48C}, {0xA490, 0xA4C6}, {0xA960, 0xA97C},
{0xAC00, 0xD7A3}, {0xF900, 0xFAFF}, {0xFE10, 0xFE19},
{0xFE30, 0xFE52}, {0xFE54, 0xFE66}, {0xFE68, 0xFE6B},
{0xFF01, 0xFF60}, {0xFFE0, 0xFFE6}, {0x16FE0, 0x16FE4},
{0x16FF0, 0x16FF1}, {0x17000, 0x187F7}, {0x18800, 0x18CD5},
{0x18D00, 0x18D08}, {0x1B000, 0x1B11E}, {0x1B150, 0x1B152},
{0x1B164, 0x1B167}, {0x1B170, 0x1B2FB}, {0x1F004, 0x1F004},
{0x1F0CF, 0x1F0CF}, {0x1F18E, 0x1F18E}, {0x1F191, 0x1F19A},
{0x1F200, 0x1F202}, {0x1F210, 0x1F23B}, {0x1F240, 0x1F248},
{0x1F250, 0x1F251}, {0x1F260, 0x1F265}, {0x1F300, 0x1F320},
{0x1F32D, 0x1F335}, {0x1F337, 0x1F37C}, {0x1F37E, 0x1F393},
{0x1F3A0, 0x1F3CA}, {0x1F3CF, 0x1F3D3}, {0x1F3E0, 0x1F3F0},
{0x1F3F4, 0x1F3F4}, {0x1F3F8, 0x1F43E}, {0x1F440, 0x1F440},
{0x1F442, 0x1F4FC}, {0x1F4FF, 0x1F53D}, {0x1F54B, 0x1F54E},
{0x1F550, 0x1F567}, {0x1F57A, 0x1F57A}, {0x1F595, 0x1F596},
{0x1F5A4, 0x1F5A4}, {0x1F5FB, 0x1F64F}, {0x1F680, 0x1F6C5},
{0x1F6CC, 0x1F6CC}, {0x1F6D0, 0x1F6D2}, {0x1F6D5, 0x1F6D7},
{0x1F6EB, 0x1F6EC}, {0x1F6F4, 0x1F6FC}, {0x1F7E0, 0x1F7EB},
{0x1F90C, 0x1F93A}, {0x1F93C, 0x1F945}, {0x1F947, 0x1F978},
{0x1F97A, 0x1F9CB}, {0x1F9CD, 0x1F9FF}, {0x1FA70, 0x1FA74},
{0x1FA78, 0x1FA7A}, {0x1FA80, 0x1FA86}, {0x1FA90, 0x1FAA8},
{0x1FAB0, 0x1FAB6}, {0x1FAC0, 0x1FAC2}, {0x1FAD0, 0x1FAD6},
{0x20000, 0x2FFFD}, {0x30000, 0x3FFFD},
}
var ambiguous = table{
{0x00A1, 0x00A1}, {0x00A4, 0x00A4}, {0x00A7, 0x00A8},
{0x00AA, 0x00AA}, {0x00AD, 0x00AE}, {0x00B0, 0x00B4},
{0x00B6, 0x00BA}, {0x00BC, 0x00BF}, {0x00C6, 0x00C6},
{0x00D0, 0x00D0}, {0x00D7, 0x00D8}, {0x00DE, 0x00E1},
{0x00E6, 0x00E6}, {0x00E8, 0x00EA}, {0x00EC, 0x00ED},
{0x00F0, 0x00F0}, {0x00F2, 0x00F3}, {0x00F7, 0x00FA},
{0x00FC, 0x00FC}, {0x00FE, 0x00FE}, {0x0101, 0x0101},
{0x0111, 0x0111}, {0x0113, 0x0113}, {0x011B, 0x011B},
{0x0126, 0x0127}, {0x012B, 0x012B}, {0x0131, 0x0133},
{0x0138, 0x0138}, {0x013F, 0x0142}, {0x0144, 0x0144},
{0x0148, 0x014B}, {0x014D, 0x014D}, {0x0152, 0x0153},
{0x0166, 0x0167}, {0x016B, 0x016B}, {0x01CE, 0x01CE},
{0x01D0, 0x01D0}, {0x01D2, 0x01D2}, {0x01D4, 0x01D4},
{0x01D6, 0x01D6}, {0x01D8, 0x01D8}, {0x01DA, 0x01DA},
{0x01DC, 0x01DC}, {0x0251, 0x0251}, {0x0261, 0x0261},
{0x02C4, 0x02C4}, {0x02C7, 0x02C7}, {0x02C9, 0x02CB},
{0x02CD, 0x02CD}, {0x02D0, 0x02D0}, {0x02D8, 0x02DB},
{0x02DD, 0x02DD}, {0x02DF, 0x02DF}, {0x0300, 0x036F},
{0x0391, 0x03A1}, {0x03A3, 0x03A9}, {0x03B1, 0x03C1},
{0x03C3, 0x03C9}, {0x0401, 0x0401}, {0x0410, 0x044F},
{0x0451, 0x0451}, {0x2010, 0x2010}, {0x2013, 0x2016},
{0x2018, 0x2019}, {0x201C, 0x201D}, {0x2020, 0x2022},
{0x2024, 0x2027}, {0x2030, 0x2030}, {0x2032, 0x2033},
{0x2035, 0x2035}, {0x203B, 0x203B}, {0x203E, 0x203E},
{0x2074, 0x2074}, {0x207F, 0x207F}, {0x2081, 0x2084},
{0x20AC, 0x20AC}, {0x2103, 0x2103}, {0x2105, 0x2105},
{0x2109, 0x2109}, {0x2113, 0x2113}, {0x2116, 0x2116},
{0x2121, 0x2122}, {0x2126, 0x2126}, {0x212B, 0x212B},
{0x2153, 0x2154}, {0x215B, 0x215E}, {0x2160, 0x216B},
{0x2170, 0x2179}, {0x2189, 0x2189}, {0x2190, 0x2199},
{0x21B8, 0x21B9}, {0x21D2, 0x21D2}, {0x21D4, 0x21D4},
{0x21E7, 0x21E7}, {0x2200, 0x2200}, {0x2202, 0x2203},
{0x2207, 0x2208}, {0x220B, 0x220B}, {0x220F, 0x220F},
{0x2211, 0x2211}, {0x2215, 0x2215}, {0x221A, 0x221A},
{0x221D, 0x2220}, {0x2223, 0x2223}, {0x2225, 0x2225},
{0x2227, 0x222C}, {0x222E, 0x222E}, {0x2234, 0x2237},
{0x223C, 0x223D}, {0x2248, 0x2248}, {0x224C, 0x224C},
{0x2252, 0x2252}, {0x2260, 0x2261}, {0x2264, 0x2267},
{0x226A, 0x226B}, {0x226E, 0x226F}, {0x2282, 0x2283},
{0x2286, 0x2287}, {0x2295, 0x2295}, {0x2299, 0x2299},
{0x22A5, 0x22A5}, {0x22BF, 0x22BF}, {0x2312, 0x2312},
{0x2460, 0x24E9}, {0x24EB, 0x254B}, {0x2550, 0x2573},
{0x2580, 0x258F}, {0x2592, 0x2595}, {0x25A0, 0x25A1},
{0x25A3, 0x25A9}, {0x25B2, 0x25B3}, {0x25B6, 0x25B7},
{0x25BC, 0x25BD}, {0x25C0, 0x25C1}, {0x25C6, 0x25C8},
{0x25CB, 0x25CB}, {0x25CE, 0x25D1}, {0x25E2, 0x25E5},
{0x25EF, 0x25EF}, {0x2605, 0x2606}, {0x2609, 0x2609},
{0x260E, 0x260F}, {0x261C, 0x261C}, {0x261E, 0x261E},
{0x2640, 0x2640}, {0x2642, 0x2642}, {0x2660, 0x2661},
{0x2663, 0x2665}, {0x2667, 0x266A}, {0x266C, 0x266D},
{0x266F, 0x266F}, {0x269E, 0x269F}, {0x26BF, 0x26BF},
{0x26C6, 0x26CD}, {0x26CF, 0x26D3}, {0x26D5, 0x26E1},
{0x26E3, 0x26E3}, {0x26E8, 0x26E9}, {0x26EB, 0x26F1},
{0x26F4, 0x26F4}, {0x26F6, 0x26F9}, {0x26FB, 0x26FC},
{0x26FE, 0x26FF}, {0x273D, 0x273D}, {0x2776, 0x277F},
{0x2B56, 0x2B59}, {0x3248, 0x324F}, {0xE000, 0xF8FF},
{0xFE00, 0xFE0F}, {0xFFFD, 0xFFFD}, {0x1F100, 0x1F10A},
{0x1F110, 0x1F12D}, {0x1F130, 0x1F169}, {0x1F170, 0x1F18D},
{0x1F18F, 0x1F190}, {0x1F19B, 0x1F1AC}, {0xE0100, 0xE01EF},
{0xF0000, 0xFFFFD}, {0x100000, 0x10FFFD},
}
var narrow = table{
{0x0020, 0x007E}, {0x00A2, 0x00A3}, {0x00A5, 0x00A6},
{0x00AC, 0x00AC}, {0x00AF, 0x00AF}, {0x27E6, 0x27ED},
{0x2985, 0x2986},
}
var neutral = table{
{0x0000, 0x001F}, {0x007F, 0x00A0}, {0x00A9, 0x00A9},
{0x00AB, 0x00AB}, {0x00B5, 0x00B5}, {0x00BB, 0x00BB},
{0x00C0, 0x00C5}, {0x00C7, 0x00CF}, {0x00D1, 0x00D6},
{0x00D9, 0x00DD}, {0x00E2, 0x00E5}, {0x00E7, 0x00E7},
{0x00EB, 0x00EB}, {0x00EE, 0x00EF}, {0x00F1, 0x00F1},
{0x00F4, 0x00F6}, {0x00FB, 0x00FB}, {0x00FD, 0x00FD},
{0x00FF, 0x0100}, {0x0102, 0x0110}, {0x0112, 0x0112},
{0x0114, 0x011A}, {0x011C, 0x0125}, {0x0128, 0x012A},
{0x012C, 0x0130}, {0x0134, 0x0137}, {0x0139, 0x013E},
{0x0143, 0x0143}, {0x0145, 0x0147}, {0x014C, 0x014C},
{0x014E, 0x0151}, {0x0154, 0x0165}, {0x0168, 0x016A},
{0x016C, 0x01CD}, {0x01CF, 0x01CF}, {0x01D1, 0x01D1},
{0x01D3, 0x01D3}, {0x01D5, 0x01D5}, {0x01D7, 0x01D7},
{0x01D9, 0x01D9}, {0x01DB, 0x01DB}, {0x01DD, 0x0250},
{0x0252, 0x0260}, {0x0262, 0x02C3}, {0x02C5, 0x02C6},
{0x02C8, 0x02C8}, {0x02CC, 0x02CC}, {0x02CE, 0x02CF},
{0x02D1, 0x02D7}, {0x02DC, 0x02DC}, {0x02DE, 0x02DE},
{0x02E0, 0x02FF}, {0x0370, 0x0377}, {0x037A, 0x037F},
{0x0384, 0x038A}, {0x038C, 0x038C}, {0x038E, 0x0390},
{0x03AA, 0x03B0}, {0x03C2, 0x03C2}, {0x03CA, 0x0400},
{0x0402, 0x040F}, {0x0450, 0x0450}, {0x0452, 0x052F},
{0x0531, 0x0556}, {0x0559, 0x058A}, {0x058D, 0x058F},
{0x0591, 0x05C7}, {0x05D0, 0x05EA}, {0x05EF, 0x05F4},
{0x0600, 0x061C}, {0x061E, 0x070D}, {0x070F, 0x074A},
{0x074D, 0x07B1}, {0x07C0, 0x07FA}, {0x07FD, 0x082D},
{0x0830, 0x083E}, {0x0840, 0x085B}, {0x085E, 0x085E},
{0x0860, 0x086A}, {0x08A0, 0x08B4}, {0x08B6, 0x08C7},
{0x08D3, 0x0983}, {0x0985, 0x098C}, {0x098F, 0x0990},
{0x0993, 0x09A8}, {0x09AA, 0x09B0}, {0x09B2, 0x09B2},
{0x09B6, 0x09B9}, {0x09BC, 0x09C4}, {0x09C7, 0x09C8},
{0x09CB, 0x09CE}, {0x09D7, 0x09D7}, {0x09DC, 0x09DD},
{0x09DF, 0x09E3}, {0x09E6, 0x09FE}, {0x0A01, 0x0A03},
{0x0A05, 0x0A0A}, {0x0A0F, 0x0A10}, {0x0A13, 0x0A28},
{0x0A2A, 0x0A30}, {0x0A32, 0x0A33}, {0x0A35, 0x0A36},
{0x0A38, 0x0A39}, {0x0A3C, 0x0A3C}, {0x0A3E, 0x0A42},
{0x0A47, 0x0A48}, {0x0A4B, 0x0A4D}, {0x0A51, 0x0A51},
{0x0A59, 0x0A5C}, {0x0A5E, 0x0A5E}, {0x0A66, 0x0A76},
{0x0A81, 0x0A83}, {0x0A85, 0x0A8D}, {0x0A8F, 0x0A91},
{0x0A93, 0x0AA8}, {0x0AAA, 0x0AB0}, {0x0AB2, 0x0AB3},
{0x0AB5, 0x0AB9}, {0x0ABC, 0x0AC5}, {0x0AC7, 0x0AC9},
{0x0ACB, 0x0ACD}, {0x0AD0, 0x0AD0}, {0x0AE0, 0x0AE3},
{0x0AE6, 0x0AF1}, {0x0AF9, 0x0AFF}, {0x0B01, 0x0B03},
{0x0B05, 0x0B0C}, {0x0B0F, 0x0B10}, {0x0B13, 0x0B28},
{0x0B2A, 0x0B30}, {0x0B32, 0x0B33}, {0x0B35, 0x0B39},
{0x0B3C, 0x0B44}, {0x0B47, 0x0B48}, {0x0B4B, 0x0B4D},
{0x0B55, 0x0B57}, {0x0B5C, 0x0B5D}, {0x0B5F, 0x0B63},
{0x0B66, 0x0B77}, {0x0B82, 0x0B83}, {0x0B85, 0x0B8A},
{0x0B8E, 0x0B90}, {0x0B92, 0x0B95}, {0x0B99, 0x0B9A},
{0x0B9C, 0x0B9C}, {0x0B9E, 0x0B9F}, {0x0BA3, 0x0BA4},
{0x0BA8, 0x0BAA}, {0x0BAE, 0x0BB9}, {0x0BBE, 0x0BC2},
{0x0BC6, 0x0BC8}, {0x0BCA, 0x0BCD}, {0x0BD0, 0x0BD0},
{0x0BD7, 0x0BD7}, {0x0BE6, 0x0BFA}, {0x0C00, 0x0C0C},
{0x0C0E, 0x0C10}, {0x0C12, 0x0C28}, {0x0C2A, 0x0C39},
{0x0C3D, 0x0C44}, {0x0C46, 0x0C48}, {0x0C4A, 0x0C4D},
{0x0C55, 0x0C56}, {0x0C58, 0x0C5A}, {0x0C60, 0x0C63},
{0x0C66, 0x0C6F}, {0x0C77, 0x0C8C}, {0x0C8E, 0x0C90},
{0x0C92, 0x0CA8}, {0x0CAA, 0x0CB3}, {0x0CB5, 0x0CB9},
{0x0CBC, 0x0CC4}, {0x0CC6, 0x0CC8}, {0x0CCA, 0x0CCD},
{0x0CD5, 0x0CD6}, {0x0CDE, 0x0CDE}, {0x0CE0, 0x0CE3},
{0x0CE6, 0x0CEF}, {0x0CF1, 0x0CF2}, {0x0D00, 0x0D0C},
{0x0D0E, 0x0D10}, {0x0D12, 0x0D44}, {0x0D46, 0x0D48},
{0x0D4A, 0x0D4F}, {0x0D54, 0x0D63}, {0x0D66, 0x0D7F},
{0x0D81, 0x0D83}, {0x0D85, 0x0D96}, {0x0D9A, 0x0DB1},
{0x0DB3, 0x0DBB}, {0x0DBD, 0x0DBD}, {0x0DC0, 0x0DC6},
{0x0DCA, 0x0DCA}, {0x0DCF, 0x0DD4}, {0x0DD6, 0x0DD6},
{0x0DD8, 0x0DDF}, {0x0DE6, 0x0DEF}, {0x0DF2, 0x0DF4},
{0x0E01, 0x0E3A}, {0x0E3F, 0x0E5B}, {0x0E81, 0x0E82},
{0x0E84, 0x0E84}, {0x0E86, 0x0E8A}, {0x0E8C, 0x0EA3},
{0x0EA5, 0x0EA5}, {0x0EA7, 0x0EBD}, {0x0EC0, 0x0EC4},
{0x0EC6, 0x0EC6}, {0x0EC8, 0x0ECD}, {0x0ED0, 0x0ED9},
{0x0EDC, 0x0EDF}, {0x0F00, 0x0F47}, {0x0F49, 0x0F6C},
{0x0F71, 0x0F97}, {0x0F99, 0x0FBC}, {0x0FBE, 0x0FCC},
{0x0FCE, 0x0FDA}, {0x1000, 0x10C5}, {0x10C7, 0x10C7},
{0x10CD, 0x10CD}, {0x10D0, 0x10FF}, {0x1160, 0x1248},
{0x124A, 0x124D}, {0x1250, 0x1256}, {0x1258, 0x1258},
{0x125A, 0x125D}, {0x1260, 0x1288}, {0x128A, 0x128D},
{0x1290, 0x12B0}, {0x12B2, 0x12B5}, {0x12B8, 0x12BE},
{0x12C0, 0x12C0}, {0x12C2, 0x12C5}, {0x12C8, 0x12D6},
{0x12D8, 0x1310}, {0x1312, 0x1315}, {0x1318, 0x135A},
{0x135D, 0x137C}, {0x1380, 0x1399}, {0x13A0, 0x13F5},
{0x13F8, 0x13FD}, {0x1400, 0x169C}, {0x16A0, 0x16F8},
{0x1700, 0x170C}, {0x170E, 0x1714}, {0x1720, 0x1736},
{0x1740, 0x1753}, {0x1760, 0x176C}, {0x176E, 0x1770},
{0x1772, 0x1773}, {0x1780, 0x17DD}, {0x17E0, 0x17E9},
{0x17F0, 0x17F9}, {0x1800, 0x180E}, {0x1810, 0x1819},
{0x1820, 0x1878}, {0x1880, 0x18AA}, {0x18B0, 0x18F5},
{0x1900, 0x191E}, {0x1920, 0x192B}, {0x1930, 0x193B},
{0x1940, 0x1940}, {0x1944, 0x196D}, {0x1970, 0x1974},
{0x1980, 0x19AB}, {0x19B0, 0x19C9}, {0x19D0, 0x19DA},
{0x19DE, 0x1A1B}, {0x1A1E, 0x1A5E}, {0x1A60, 0x1A7C},
{0x1A7F, 0x1A89}, {0x1A90, 0x1A99}, {0x1AA0, 0x1AAD},
{0x1AB0, 0x1AC0}, {0x1B00, 0x1B4B}, {0x1B50, 0x1B7C},
{0x1B80, 0x1BF3}, {0x1BFC, 0x1C37}, {0x1C3B, 0x1C49},
{0x1C4D, 0x1C88}, {0x1C90, 0x1CBA}, {0x1CBD, 0x1CC7},
{0x1CD0, 0x1CFA}, {0x1D00, 0x1DF9}, {0x1DFB, 0x1F15},
{0x1F18, 0x1F1D}, {0x1F20, 0x1F45}, {0x1F48, 0x1F4D},
{0x1F50, 0x1F57}, {0x1F59, 0x1F59}, {0x1F5B, 0x1F5B},
{0x1F5D, 0x1F5D}, {0x1F5F, 0x1F7D}, {0x1F80, 0x1FB4},
{0x1FB6, 0x1FC4}, {0x1FC6, 0x1FD3}, {0x1FD6, 0x1FDB},
{0x1FDD, 0x1FEF}, {0x1FF2, 0x1FF4}, {0x1FF6, 0x1FFE},
{0x2000, 0x200F}, {0x2011, 0x2012}, {0x2017, 0x2017},
{0x201A, 0x201B}, {0x201E, 0x201F}, {0x2023, 0x2023},
{0x2028, 0x202F}, {0x2031, 0x2031}, {0x2034, 0x2034},
{0x2036, 0x203A}, {0x203C, 0x203D}, {0x203F, 0x2064},
{0x2066, 0x2071}, {0x2075, 0x207E}, {0x2080, 0x2080},
{0x2085, 0x208E}, {0x2090, 0x209C}, {0x20A0, 0x20A8},
{0x20AA, 0x20AB}, {0x20AD, 0x20BF}, {0x20D0, 0x20F0},
{0x2100, 0x2102}, {0x2104, 0x2104}, {0x2106, 0x2108},
{0x210A, 0x2112}, {0x2114, 0x2115}, {0x2117, 0x2120},
{0x2123, 0x2125}, {0x2127, 0x212A}, {0x212C, 0x2152},
{0x2155, 0x215A}, {0x215F, 0x215F}, {0x216C, 0x216F},
{0x217A, 0x2188}, {0x218A, 0x218B}, {0x219A, 0x21B7},
{0x21BA, 0x21D1}, {0x21D3, 0x21D3}, {0x21D5, 0x21E6},
{0x21E8, 0x21FF}, {0x2201, 0x2201}, {0x2204, 0x2206},
{0x2209, 0x220A}, {0x220C, 0x220E}, {0x2210, 0x2210},
{0x2212, 0x2214}, {0x2216, 0x2219}, {0x221B, 0x221C},
{0x2221, 0x2222}, {0x2224, 0x2224}, {0x2226, 0x2226},
{0x222D, 0x222D}, {0x222F, 0x2233}, {0x2238, 0x223B},
{0x223E, 0x2247}, {0x2249, 0x224B}, {0x224D, 0x2251},
{0x2253, 0x225F}, {0x2262, 0x2263}, {0x2268, 0x2269},
{0x226C, 0x226D}, {0x2270, 0x2281}, {0x2284, 0x2285},
{0x2288, 0x2294}, {0x2296, 0x2298}, {0x229A, 0x22A4},
{0x22A6, 0x22BE}, {0x22C0, 0x2311}, {0x2313, 0x2319},
{0x231C, 0x2328}, {0x232B, 0x23E8}, {0x23ED, 0x23EF},
{0x23F1, 0x23F2}, {0x23F4, 0x2426}, {0x2440, 0x244A},
{0x24EA, 0x24EA}, {0x254C, 0x254F}, {0x2574, 0x257F},
{0x2590, 0x2591}, {0x2596, 0x259F}, {0x25A2, 0x25A2},
{0x25AA, 0x25B1}, {0x25B4, 0x25B5}, {0x25B8, 0x25BB},
{0x25BE, 0x25BF}, {0x25C2, 0x25C5}, {0x25C9, 0x25CA},
{0x25CC, 0x25CD}, {0x25D2, 0x25E1}, {0x25E6, 0x25EE},
{0x25F0, 0x25FC}, {0x25FF, 0x2604}, {0x2607, 0x2608},
{0x260A, 0x260D}, {0x2610, 0x2613}, {0x2616, 0x261B},
{0x261D, 0x261D}, {0x261F, 0x263F}, {0x2641, 0x2641},
{0x2643, 0x2647}, {0x2654, 0x265F}, {0x2662, 0x2662},
{0x2666, 0x2666}, {0x266B, 0x266B}, {0x266E, 0x266E},
{0x2670, 0x267E}, {0x2680, 0x2692}, {0x2694, 0x269D},
{0x26A0, 0x26A0}, {0x26A2, 0x26A9}, {0x26AC, 0x26BC},
{0x26C0, 0x26C3}, {0x26E2, 0x26E2}, {0x26E4, 0x26E7},
{0x2700, 0x2704}, {0x2706, 0x2709}, {0x270C, 0x2727},
{0x2729, 0x273C}, {0x273E, 0x274B}, {0x274D, 0x274D},
{0x274F, 0x2752}, {0x2756, 0x2756}, {0x2758, 0x2775},
{0x2780, 0x2794}, {0x2798, 0x27AF}, {0x27B1, 0x27BE},
{0x27C0, 0x27E5}, {0x27EE, 0x2984}, {0x2987, 0x2B1A},
{0x2B1D, 0x2B4F}, {0x2B51, 0x2B54}, {0x2B5A, 0x2B73},
{0x2B76, 0x2B95}, {0x2B97, 0x2C2E}, {0x2C30, 0x2C5E},
{0x2C60, 0x2CF3}, {0x2CF9, 0x2D25}, {0x2D27, 0x2D27},
{0x2D2D, 0x2D2D}, {0x2D30, 0x2D67}, {0x2D6F, 0x2D70},
{0x2D7F, 0x2D96}, {0x2DA0, 0x2DA6}, {0x2DA8, 0x2DAE},
{0x2DB0, 0x2DB6}, {0x2DB8, 0x2DBE}, {0x2DC0, 0x2DC6},
{0x2DC8, 0x2DCE}, {0x2DD0, 0x2DD6}, {0x2DD8, 0x2DDE},
{0x2DE0, 0x2E52}, {0x303F, 0x303F}, {0x4DC0, 0x4DFF},
{0xA4D0, 0xA62B}, {0xA640, 0xA6F7}, {0xA700, 0xA7BF},
{0xA7C2, 0xA7CA}, {0xA7F5, 0xA82C}, {0xA830, 0xA839},
{0xA840, 0xA877}, {0xA880, 0xA8C5}, {0xA8CE, 0xA8D9},
{0xA8E0, 0xA953}, {0xA95F, 0xA95F}, {0xA980, 0xA9CD},
{0xA9CF, 0xA9D9}, {0xA9DE, 0xA9FE}, {0xAA00, 0xAA36},
{0xAA40, 0xAA4D}, {0xAA50, 0xAA59}, {0xAA5C, 0xAAC2},
{0xAADB, 0xAAF6}, {0xAB01, 0xAB06}, {0xAB09, 0xAB0E},
{0xAB11, 0xAB16}, {0xAB20, 0xAB26}, {0xAB28, 0xAB2E},
{0xAB30, 0xAB6B}, {0xAB70, 0xABED}, {0xABF0, 0xABF9},
{0xD7B0, 0xD7C6}, {0xD7CB, 0xD7FB}, {0xD800, 0xDFFF},
{0xFB00, 0xFB06}, {0xFB13, 0xFB17}, {0xFB1D, 0xFB36},
{0xFB38, 0xFB3C}, {0xFB3E, 0xFB3E}, {0xFB40, 0xFB41},
{0xFB43, 0xFB44}, {0xFB46, 0xFBC1}, {0xFBD3, 0xFD3F},
{0xFD50, 0xFD8F}, {0xFD92, 0xFDC7}, {0xFDF0, 0xFDFD},
{0xFE20, 0xFE2F}, {0xFE70, 0xFE74}, {0xFE76, 0xFEFC},
{0xFEFF, 0xFEFF}, {0xFFF9, 0xFFFC}, {0x10000, 0x1000B},
{0x1000D, 0x10026}, {0x10028, 0x1003A}, {0x1003C, 0x1003D},
{0x1003F, 0x1004D}, {0x10050, 0x1005D}, {0x10080, 0x100FA},
{0x10100, 0x10102}, {0x10107, 0x10133}, {0x10137, 0x1018E},
{0x10190, 0x1019C}, {0x101A0, 0x101A0}, {0x101D0, 0x101FD},
{0x10280, 0x1029C}, {0x102A0, 0x102D0}, {0x102E0, 0x102FB},
{0x10300, 0x10323}, {0x1032D, 0x1034A}, {0x10350, 0x1037A},
{0x10380, 0x1039D}, {0x1039F, 0x103C3}, {0x103C8, 0x103D5},
{0x10400, 0x1049D}, {0x104A0, 0x104A9}, {0x104B0, 0x104D3},
{0x104D8, 0x104FB}, {0x10500, 0x10527}, {0x10530, 0x10563},
{0x1056F, 0x1056F}, {0x10600, 0x10736}, {0x10740, 0x10755},
{0x10760, 0x10767}, {0x10800, 0x10805}, {0x10808, 0x10808},
{0x1080A, 0x10835}, {0x10837, 0x10838}, {0x1083C, 0x1083C},
{0x1083F, 0x10855}, {0x10857, 0x1089E}, {0x108A7, 0x108AF},
{0x108E0, 0x108F2}, {0x108F4, 0x108F5}, {0x108FB, 0x1091B},
{0x1091F, 0x10939}, {0x1093F, 0x1093F}, {0x10980, 0x109B7},
{0x109BC, 0x109CF}, {0x109D2, 0x10A03}, {0x10A05, 0x10A06},
{0x10A0C, 0x10A13}, {0x10A15, 0x10A17}, {0x10A19, 0x10A35},
{0x10A38, 0x10A3A}, {0x10A3F, 0x10A48}, {0x10A50, 0x10A58},
{0x10A60, 0x10A9F}, {0x10AC0, 0x10AE6}, {0x10AEB, 0x10AF6},
{0x10B00, 0x10B35}, {0x10B39, 0x10B55}, {0x10B58, 0x10B72},
{0x10B78, 0x10B91}, {0x10B99, 0x10B9C}, {0x10BA9, 0x10BAF},
{0x10C00, 0x10C48}, {0x10C80, 0x10CB2}, {0x10CC0, 0x10CF2},
{0x10CFA, 0x10D27}, {0x10D30, 0x10D39}, {0x10E60, 0x10E7E},
{0x10E80, 0x10EA9}, {0x10EAB, 0x10EAD}, {0x10EB0, 0x10EB1},
{0x10F00, 0x10F27}, {0x10F30, 0x10F59}, {0x10FB0, 0x10FCB},
{0x10FE0, 0x10FF6}, {0x11000, 0x1104D}, {0x11052, 0x1106F},
{0x1107F, 0x110C1}, {0x110CD, 0x110CD}, {0x110D0, 0x110E8},
{0x110F0, 0x110F9}, {0x11100, 0x11134}, {0x11136, 0x11147},
{0x11150, 0x11176}, {0x11180, 0x111DF}, {0x111E1, 0x111F4},
{0x11200, 0x11211}, {0x11213, 0x1123E}, {0x11280, 0x11286},
{0x11288, 0x11288}, {0x1128A, 0x1128D}, {0x1128F, 0x1129D},
{0x1129F, 0x112A9}, {0x112B0, 0x112EA}, {0x112F0, 0x112F9},
{0x11300, 0x11303}, {0x11305, 0x1130C}, {0x1130F, 0x11310},
{0x11313, 0x11328}, {0x1132A, 0x11330}, {0x11332, 0x11333},
{0x11335, 0x11339}, {0x1133B, 0x11344}, {0x11347, 0x11348},
{0x1134B, 0x1134D}, {0x11350, 0x11350}, {0x11357, 0x11357},
{0x1135D, 0x11363}, {0x11366, 0x1136C}, {0x11370, 0x11374},
{0x11400, 0x1145B}, {0x1145D, 0x11461}, {0x11480, 0x114C7},
{0x114D0, 0x114D9}, {0x11580, 0x115B5}, {0x115B8, 0x115DD},
{0x11600, 0x11644}, {0x11650, 0x11659}, {0x11660, 0x1166C},
{0x11680, 0x116B8}, {0x116C0, 0x116C9}, {0x11700, 0x1171A},
{0x1171D, 0x1172B}, {0x11730, 0x1173F}, {0x11800, 0x1183B},
{0x118A0, 0x118F2}, {0x118FF, 0x11906}, {0x11909, 0x11909},
{0x1190C, 0x11913}, {0x11915, 0x11916}, {0x11918, 0x11935},
{0x11937, 0x11938}, {0x1193B, 0x11946}, {0x11950, 0x11959},
{0x119A0, 0x119A7}, {0x119AA, 0x119D7}, {0x119DA, 0x119E4},
{0x11A00, 0x11A47}, {0x11A50, 0x11AA2}, {0x11AC0, 0x11AF8},
{0x11C00, 0x11C08}, {0x11C0A, 0x11C36}, {0x11C38, 0x11C45},
{0x11C50, 0x11C6C}, {0x11C70, 0x11C8F}, {0x11C92, 0x11CA7},
{0x11CA9, 0x11CB6}, {0x11D00, 0x11D06}, {0x11D08, 0x11D09},
{0x11D0B, 0x11D36}, {0x11D3A, 0x11D3A}, {0x11D3C, 0x11D3D},
{0x11D3F, 0x11D47}, {0x11D50, 0x11D59}, {0x11D60, 0x11D65},
{0x11D67, 0x11D68}, {0x11D6A, 0x11D8E}, {0x11D90, 0x11D91},
{0x11D93, 0x11D98}, {0x11DA0, 0x11DA9}, {0x11EE0, 0x11EF8},
{0x11FB0, 0x11FB0}, {0x11FC0, 0x11FF1}, {0x11FFF, 0x12399},
{0x12400, 0x1246E}, {0x12470, 0x12474}, {0x12480, 0x12543},
{0x13000, 0x1342E}, {0x13430, 0x13438}, {0x14400, 0x14646},
{0x16800, 0x16A38}, {0x16A40, 0x16A5E}, {0x16A60, 0x16A69},
{0x16A6E, 0x16A6F}, {0x16AD0, 0x16AED}, {0x16AF0, 0x16AF5},
{0x16B00, 0x16B45}, {0x16B50, 0x16B59}, {0x16B5B, 0x16B61},
{0x16B63, 0x16B77}, {0x16B7D, 0x16B8F}, {0x16E40, 0x16E9A},
{0x16F00, 0x16F4A}, {0x16F4F, 0x16F87}, {0x16F8F, 0x16F9F},
{0x1BC00, 0x1BC6A}, {0x1BC70, 0x1BC7C}, {0x1BC80, 0x1BC88},
{0x1BC90, 0x1BC99}, {0x1BC9C, 0x1BCA3}, {0x1D000, 0x1D0F5},
{0x1D100, 0x1D126}, {0x1D129, 0x1D1E8}, {0x1D200, 0x1D245},
{0x1D2E0, 0x1D2F3}, {0x1D300, 0x1D356}, {0x1D360, 0x1D378},
{0x1D400, 0x1D454}, {0x1D456, 0x1D49C}, {0x1D49E, 0x1D49F},
{0x1D4A2, 0x1D4A2}, {0x1D4A5, 0x1D4A6}, {0x1D4A9, 0x1D4AC},
{0x1D4AE, 0x1D4B9}, {0x1D4BB, 0x1D4BB}, {0x1D4BD, 0x1D4C3},
{0x1D4C5, 0x1D505}, {0x1D507, 0x1D50A}, {0x1D50D, 0x1D514},
{0x1D516, 0x1D51C}, {0x1D51E, 0x1D539}, {0x1D53B, 0x1D53E},
{0x1D540, 0x1D544}, {0x1D546, 0x1D546}, {0x1D54A, 0x1D550},
{0x1D552, 0x1D6A5}, {0x1D6A8, 0x1D7CB}, {0x1D7CE, 0x1DA8B},
{0x1DA9B, 0x1DA9F}, {0x1DAA1, 0x1DAAF}, {0x1E000, 0x1E006},
{0x1E008, 0x1E018}, {0x1E01B, 0x1E021}, {0x1E023, 0x1E024},
{0x1E026, 0x1E02A}, {0x1E100, 0x1E12C}, {0x1E130, 0x1E13D},
{0x1E140, 0x1E149}, {0x1E14E, 0x1E14F}, {0x1E2C0, 0x1E2F9},
{0x1E2FF, 0x1E2FF}, {0x1E800, 0x1E8C4}, {0x1E8C7, 0x1E8D6},
{0x1E900, 0x1E94B}, {0x1E950, 0x1E959}, {0x1E95E, 0x1E95F},
{0x1EC71, 0x1ECB4}, {0x1ED01, 0x1ED3D}, {0x1EE00, 0x1EE03},
{0x1EE05, 0x1EE1F}, {0x1EE21, 0x1EE22}, {0x1EE24, 0x1EE24},
{0x1EE27, 0x1EE27}, {0x1EE29, 0x1EE32}, {0x1EE34, 0x1EE37},
{0x1EE39, 0x1EE39}, {0x1EE3B, 0x1EE3B}, {0x1EE42, 0x1EE42},
{0x1EE47, 0x1EE47}, {0x1EE49, 0x1EE49}, {0x1EE4B, 0x1EE4B},
{0x1EE4D, 0x1EE4F}, {0x1EE51, 0x1EE52}, {0x1EE54, 0x1EE54},
{0x1EE57, 0x1EE57}, {0x1EE59, 0x1EE59}, {0x1EE5B, 0x1EE5B},
{0x1EE5D, 0x1EE5D}, {0x1EE5F, 0x1EE5F}, {0x1EE61, 0x1EE62},
{0x1EE64, 0x1EE64}, {0x1EE67, 0x1EE6A}, {0x1EE6C, 0x1EE72},
{0x1EE74, 0x1EE77}, {0x1EE79, 0x1EE7C}, {0x1EE7E, 0x1EE7E},
{0x1EE80, 0x1EE89}, {0x1EE8B, 0x1EE9B}, {0x1EEA1, 0x1EEA3},
{0x1EEA5, 0x1EEA9}, {0x1EEAB, 0x1EEBB}, {0x1EEF0, 0x1EEF1},
{0x1F000, 0x1F003}, {0x1F005, 0x1F02B}, {0x1F030, 0x1F093},
{0x1F0A0, 0x1F0AE}, {0x1F0B1, 0x1F0BF}, {0x1F0C1, 0x1F0CE},
{0x1F0D1, 0x1F0F5}, {0x1F10B, 0x1F10F}, {0x1F12E, 0x1F12F},
{0x1F16A, 0x1F16F}, {0x1F1AD, 0x1F1AD}, {0x1F1E6, 0x1F1FF},
{0x1F321, 0x1F32C}, {0x1F336, 0x1F336}, {0x1F37D, 0x1F37D},
{0x1F394, 0x1F39F}, {0x1F3CB, 0x1F3CE}, {0x1F3D4, 0x1F3DF},
{0x1F3F1, 0x1F3F3}, {0x1F3F5, 0x1F3F7}, {0x1F43F, 0x1F43F},
{0x1F441, 0x1F441}, {0x1F4FD, 0x1F4FE}, {0x1F53E, 0x1F54A},
{0x1F54F, 0x1F54F}, {0x1F568, 0x1F579}, {0x1F57B, 0x1F594},
{0x1F597, 0x1F5A3}, {0x1F5A5, 0x1F5FA}, {0x1F650, 0x1F67F},
{0x1F6C6, 0x1F6CB}, {0x1F6CD, 0x1F6CF}, {0x1F6D3, 0x1F6D4},
{0x1F6E0, 0x1F6EA}, {0x1F6F0, 0x1F6F3}, {0x1F700, 0x1F773},
{0x1F780, 0x1F7D8}, {0x1F800, 0x1F80B}, {0x1F810, 0x1F847},
{0x1F850, 0x1F859}, {0x1F860, 0x1F887}, {0x1F890, 0x1F8AD},
{0x1F8B0, 0x1F8B1}, {0x1F900, 0x1F90B}, {0x1F93B, 0x1F93B},
{0x1F946, 0x1F946}, {0x1FA00, 0x1FA53}, {0x1FA60, 0x1FA6D},
{0x1FB00, 0x1FB92}, {0x1FB94, 0x1FBCA}, {0x1FBF0, 0x1FBF9},
{0xE0001, 0xE0001}, {0xE0020, 0xE007F},
}
var emoji = table{
{0x203C, 0x203C}, {0x2049, 0x2049}, {0x2122, 0x2122},
{0x2139, 0x2139}, {0x2194, 0x2199}, {0x21A9, 0x21AA},
{0x231A, 0x231B}, {0x2328, 0x2328}, {0x2388, 0x2388},
{0x23CF, 0x23CF}, {0x23E9, 0x23F3}, {0x23F8, 0x23FA},
{0x24C2, 0x24C2}, {0x25AA, 0x25AB}, {0x25B6, 0x25B6},
{0x25C0, 0x25C0}, {0x25FB, 0x25FE}, {0x2600, 0x2605},
{0x2607, 0x2612}, {0x2614, 0x2685}, {0x2690, 0x2705},
{0x2708, 0x2712}, {0x2714, 0x2714}, {0x2716, 0x2716},
{0x271D, 0x271D}, {0x2721, 0x2721}, {0x2728, 0x2728},
{0x2733, 0x2734}, {0x2744, 0x2744}, {0x2747, 0x2747},
{0x274C, 0x274C}, {0x274E, 0x274E}, {0x2753, 0x2755},
{0x2757, 0x2757}, {0x2763, 0x2767}, {0x2795, 0x2797},
{0x27A1, 0x27A1}, {0x27B0, 0x27B0}, {0x27BF, 0x27BF},
{0x2934, 0x2935}, {0x2B05, 0x2B07}, {0x2B1B, 0x2B1C},
{0x2B50, 0x2B50}, {0x2B55, 0x2B55}, {0x3030, 0x3030},
{0x303D, 0x303D}, {0x3297, 0x3297}, {0x3299, 0x3299},
{0x1F000, 0x1F0FF}, {0x1F10D, 0x1F10F}, {0x1F12F, 0x1F12F},
{0x1F16C, 0x1F171}, {0x1F17E, 0x1F17F}, {0x1F18E, 0x1F18E},
{0x1F191, 0x1F19A}, {0x1F1AD, 0x1F1E5}, {0x1F201, 0x1F20F},
{0x1F21A, 0x1F21A}, {0x1F22F, 0x1F22F}, {0x1F232, 0x1F23A},
{0x1F23C, 0x1F23F}, {0x1F249, 0x1F3FA}, {0x1F400, 0x1F53D},
{0x1F546, 0x1F64F}, {0x1F680, 0x1F6FF}, {0x1F774, 0x1F77F},
{0x1F7D5, 0x1F7FF}, {0x1F80C, 0x1F80F}, {0x1F848, 0x1F84F},
{0x1F85A, 0x1F85F}, {0x1F888, 0x1F88F}, {0x1F8AE, 0x1F8FF},
{0x1F90C, 0x1F93A}, {0x1F93C, 0x1F945}, {0x1F947, 0x1FAFF},
{0x1FC00, 0x1FFFD},
}

28
tests/vendor/github.com/mattn/go-runewidth/runewidth_windows.go generated vendored Normal file
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@ -0,0 +1,28 @@
// +build windows
// +build !appengine
package runewidth
import (
"syscall"
)
var (
kernel32 = syscall.NewLazyDLL("kernel32")
procGetConsoleOutputCP = kernel32.NewProc("GetConsoleOutputCP")
)
// IsEastAsian return true if the current locale is CJK
func IsEastAsian() bool {
r1, _, _ := procGetConsoleOutputCP.Call()
if r1 == 0 {
return false
}
switch int(r1) {
case 932, 51932, 936, 949, 950:
return true
}
return false
}

15
tests/vendor/github.com/olekukonko/tablewriter/.gitignore generated vendored Normal file
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@ -0,0 +1,15 @@
# Created by .ignore support plugin (hsz.mobi)
### Go template
# Binaries for programs and plugins
*.exe
*.exe~
*.dll
*.so
*.dylib
# Test binary, build with `go test -c`
*.test
# Output of the go coverage tool, specifically when used with LiteIDE
*.out

19
tests/vendor/github.com/olekukonko/tablewriter/LICENSE.md generated vendored Normal file
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@ -0,0 +1,19 @@
Copyright (C) 2014 by Oleku Konko
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.

431
tests/vendor/github.com/olekukonko/tablewriter/README.md generated vendored Normal file
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@ -0,0 +1,431 @@
ASCII Table Writer
=========
[![ci](https://github.com/olekukonko/tablewriter/workflows/ci/badge.svg?branch=master)](https://github.com/olekukonko/tablewriter/actions?query=workflow%3Aci)
[![Total views](https://img.shields.io/sourcegraph/rrc/github.com/olekukonko/tablewriter.svg)](https://sourcegraph.com/github.com/olekukonko/tablewriter)
[![Godoc](https://godoc.org/github.com/olekukonko/tablewriter?status.svg)](https://godoc.org/github.com/olekukonko/tablewriter)
Generate ASCII table on the fly ... Installation is simple as
go get github.com/olekukonko/tablewriter
#### Features
- Automatic Padding
- Support Multiple Lines
- Supports Alignment
- Support Custom Separators
- Automatic Alignment of numbers & percentage
- Write directly to http , file etc via `io.Writer`
- Read directly from CSV file
- Optional row line via `SetRowLine`
- Normalise table header
- Make CSV Headers optional
- Enable or disable table border
- Set custom footer support
- Optional identical cells merging
- Set custom caption
- Optional reflowing of paragraphs in multi-line cells.
#### Example 1 - Basic
```go
data := [][]string{
[]string{"A", "The Good", "500"},
[]string{"B", "The Very very Bad Man", "288"},
[]string{"C", "The Ugly", "120"},
[]string{"D", "The Gopher", "800"},
}
table := tablewriter.NewWriter(os.Stdout)
table.SetHeader([]string{"Name", "Sign", "Rating"})
for _, v := range data {
table.Append(v)
}
table.Render() // Send output
```
##### Output 1
```
+------+-----------------------+--------+
| NAME | SIGN | RATING |
+------+-----------------------+--------+
| A | The Good | 500 |
| B | The Very very Bad Man | 288 |
| C | The Ugly | 120 |
| D | The Gopher | 800 |
+------+-----------------------+--------+
```
#### Example 2 - Without Border / Footer / Bulk Append
```go
data := [][]string{
[]string{"1/1/2014", "Domain name", "2233", "$10.98"},
[]string{"1/1/2014", "January Hosting", "2233", "$54.95"},
[]string{"1/4/2014", "February Hosting", "2233", "$51.00"},
[]string{"1/4/2014", "February Extra Bandwidth", "2233", "$30.00"},
}
table := tablewriter.NewWriter(os.Stdout)
table.SetHeader([]string{"Date", "Description", "CV2", "Amount"})
table.SetFooter([]string{"", "", "Total", "$146.93"}) // Add Footer
table.SetBorder(false) // Set Border to false
table.AppendBulk(data) // Add Bulk Data
table.Render()
```
##### Output 2
```
DATE | DESCRIPTION | CV2 | AMOUNT
-----------+--------------------------+-------+----------
1/1/2014 | Domain name | 2233 | $10.98
1/1/2014 | January Hosting | 2233 | $54.95
1/4/2014 | February Hosting | 2233 | $51.00
1/4/2014 | February Extra Bandwidth | 2233 | $30.00
-----------+--------------------------+-------+----------
TOTAL | $146 93
--------+----------
```
#### Example 3 - CSV
```go
table, _ := tablewriter.NewCSV(os.Stdout, "testdata/test_info.csv", true)
table.SetAlignment(tablewriter.ALIGN_LEFT) // Set Alignment
table.Render()
```
##### Output 3
```
+----------+--------------+------+-----+---------+----------------+
| FIELD | TYPE | NULL | KEY | DEFAULT | EXTRA |
+----------+--------------+------+-----+---------+----------------+
| user_id | smallint(5) | NO | PRI | NULL | auto_increment |
| username | varchar(10) | NO | | NULL | |
| password | varchar(100) | NO | | NULL | |
+----------+--------------+------+-----+---------+----------------+
```
#### Example 4 - Custom Separator
```go
table, _ := tablewriter.NewCSV(os.Stdout, "testdata/test.csv", true)
table.SetRowLine(true) // Enable row line
// Change table lines
table.SetCenterSeparator("*")
table.SetColumnSeparator("╪")
table.SetRowSeparator("-")
table.SetAlignment(tablewriter.ALIGN_LEFT)
table.Render()
```
##### Output 4
```
*------------*-----------*---------*
╪ FIRST NAME ╪ LAST NAME ╪ SSN ╪
*------------*-----------*---------*
╪ John ╪ Barry ╪ 123456 ╪
*------------*-----------*---------*
╪ Kathy ╪ Smith ╪ 687987 ╪
*------------*-----------*---------*
╪ Bob ╪ McCornick ╪ 3979870 ╪
*------------*-----------*---------*
```
#### Example 5 - Markdown Format
```go
data := [][]string{
[]string{"1/1/2014", "Domain name", "2233", "$10.98"},
[]string{"1/1/2014", "January Hosting", "2233", "$54.95"},
[]string{"1/4/2014", "February Hosting", "2233", "$51.00"},
[]string{"1/4/2014", "February Extra Bandwidth", "2233", "$30.00"},
}
table := tablewriter.NewWriter(os.Stdout)
table.SetHeader([]string{"Date", "Description", "CV2", "Amount"})
table.SetBorders(tablewriter.Border{Left: true, Top: false, Right: true, Bottom: false})
table.SetCenterSeparator("|")
table.AppendBulk(data) // Add Bulk Data
table.Render()
```
##### Output 5
```
| DATE | DESCRIPTION | CV2 | AMOUNT |
|----------|--------------------------|------|--------|
| 1/1/2014 | Domain name | 2233 | $10.98 |
| 1/1/2014 | January Hosting | 2233 | $54.95 |
| 1/4/2014 | February Hosting | 2233 | $51.00 |
| 1/4/2014 | February Extra Bandwidth | 2233 | $30.00 |
```
#### Example 6 - Identical cells merging
```go
data := [][]string{
[]string{"1/1/2014", "Domain name", "1234", "$10.98"},
[]string{"1/1/2014", "January Hosting", "2345", "$54.95"},
[]string{"1/4/2014", "February Hosting", "3456", "$51.00"},
[]string{"1/4/2014", "February Extra Bandwidth", "4567", "$30.00"},
}
table := tablewriter.NewWriter(os.Stdout)
table.SetHeader([]string{"Date", "Description", "CV2", "Amount"})
table.SetFooter([]string{"", "", "Total", "$146.93"})
table.SetAutoMergeCells(true)
table.SetRowLine(true)
table.AppendBulk(data)
table.Render()
```
##### Output 6
```
+----------+--------------------------+-------+---------+
| DATE | DESCRIPTION | CV2 | AMOUNT |
+----------+--------------------------+-------+---------+
| 1/1/2014 | Domain name | 1234 | $10.98 |
+ +--------------------------+-------+---------+
| | January Hosting | 2345 | $54.95 |
+----------+--------------------------+-------+---------+
| 1/4/2014 | February Hosting | 3456 | $51.00 |
+ +--------------------------+-------+---------+
| | February Extra Bandwidth | 4567 | $30.00 |
+----------+--------------------------+-------+---------+
| TOTAL | $146 93 |
+----------+--------------------------+-------+---------+
```
#### Example 7 - Identical cells merging (specify the column index to merge)
```go
data := [][]string{
[]string{"1/1/2014", "Domain name", "1234", "$10.98"},
[]string{"1/1/2014", "January Hosting", "1234", "$10.98"},
[]string{"1/4/2014", "February Hosting", "3456", "$51.00"},
[]string{"1/4/2014", "February Extra Bandwidth", "4567", "$30.00"},
}
table := tablewriter.NewWriter(os.Stdout)
table.SetHeader([]string{"Date", "Description", "CV2", "Amount"})
table.SetFooter([]string{"", "", "Total", "$146.93"})
table.SetAutoMergeCellsByColumnIndex([]int{2, 3})
table.SetRowLine(true)
table.AppendBulk(data)
table.Render()
```
##### Output 7
```
+----------+--------------------------+-------+---------+
| DATE | DESCRIPTION | CV2 | AMOUNT |
+----------+--------------------------+-------+---------+
| 1/1/2014 | Domain name | 1234 | $10.98 |
+----------+--------------------------+ + +
| 1/1/2014 | January Hosting | | |
+----------+--------------------------+-------+---------+
| 1/4/2014 | February Hosting | 3456 | $51.00 |
+----------+--------------------------+-------+---------+
| 1/4/2014 | February Extra Bandwidth | 4567 | $30.00 |
+----------+--------------------------+-------+---------+
| TOTAL | $146.93 |
+----------+--------------------------+-------+---------+
```
#### Table with color
```go
data := [][]string{
[]string{"1/1/2014", "Domain name", "2233", "$10.98"},
[]string{"1/1/2014", "January Hosting", "2233", "$54.95"},
[]string{"1/4/2014", "February Hosting", "2233", "$51.00"},
[]string{"1/4/2014", "February Extra Bandwidth", "2233", "$30.00"},
}
table := tablewriter.NewWriter(os.Stdout)
table.SetHeader([]string{"Date", "Description", "CV2", "Amount"})
table.SetFooter([]string{"", "", "Total", "$146.93"}) // Add Footer
table.SetBorder(false) // Set Border to false
table.SetHeaderColor(tablewriter.Colors{tablewriter.Bold, tablewriter.BgGreenColor},
tablewriter.Colors{tablewriter.FgHiRedColor, tablewriter.Bold, tablewriter.BgBlackColor},
tablewriter.Colors{tablewriter.BgRedColor, tablewriter.FgWhiteColor},
tablewriter.Colors{tablewriter.BgCyanColor, tablewriter.FgWhiteColor})
table.SetColumnColor(tablewriter.Colors{tablewriter.Bold, tablewriter.FgHiBlackColor},
tablewriter.Colors{tablewriter.Bold, tablewriter.FgHiRedColor},
tablewriter.Colors{tablewriter.Bold, tablewriter.FgHiBlackColor},
tablewriter.Colors{tablewriter.Bold, tablewriter.FgBlackColor})
table.SetFooterColor(tablewriter.Colors{}, tablewriter.Colors{},
tablewriter.Colors{tablewriter.Bold},
tablewriter.Colors{tablewriter.FgHiRedColor})
table.AppendBulk(data)
table.Render()
```
#### Table with color Output
![Table with Color](https://cloud.githubusercontent.com/assets/6460392/21101956/bbc7b356-c0a1-11e6-9f36-dba694746efc.png)
#### Example - 8 Table Cells with Color
Individual Cell Colors from `func Rich` take precedence over Column Colors
```go
data := [][]string{
[]string{"Test1Merge", "HelloCol2 - 1", "HelloCol3 - 1", "HelloCol4 - 1"},
[]string{"Test1Merge", "HelloCol2 - 2", "HelloCol3 - 2", "HelloCol4 - 2"},
[]string{"Test1Merge", "HelloCol2 - 3", "HelloCol3 - 3", "HelloCol4 - 3"},
[]string{"Test2Merge", "HelloCol2 - 4", "HelloCol3 - 4", "HelloCol4 - 4"},
[]string{"Test2Merge", "HelloCol2 - 5", "HelloCol3 - 5", "HelloCol4 - 5"},
[]string{"Test2Merge", "HelloCol2 - 6", "HelloCol3 - 6", "HelloCol4 - 6"},
[]string{"Test2Merge", "HelloCol2 - 7", "HelloCol3 - 7", "HelloCol4 - 7"},
[]string{"Test3Merge", "HelloCol2 - 8", "HelloCol3 - 8", "HelloCol4 - 8"},
[]string{"Test3Merge", "HelloCol2 - 9", "HelloCol3 - 9", "HelloCol4 - 9"},
[]string{"Test3Merge", "HelloCol2 - 10", "HelloCol3 -10", "HelloCol4 - 10"},
}
table := tablewriter.NewWriter(os.Stdout)
table.SetHeader([]string{"Col1", "Col2", "Col3", "Col4"})
table.SetFooter([]string{"", "", "Footer3", "Footer4"})
table.SetBorder(false)
table.SetHeaderColor(tablewriter.Colors{tablewriter.Bold, tablewriter.BgGreenColor},
tablewriter.Colors{tablewriter.FgHiRedColor, tablewriter.Bold, tablewriter.BgBlackColor},
tablewriter.Colors{tablewriter.BgRedColor, tablewriter.FgWhiteColor},
tablewriter.Colors{tablewriter.BgCyanColor, tablewriter.FgWhiteColor})
table.SetColumnColor(tablewriter.Colors{tablewriter.Bold, tablewriter.FgHiBlackColor},
tablewriter.Colors{tablewriter.Bold, tablewriter.FgHiRedColor},
tablewriter.Colors{tablewriter.Bold, tablewriter.FgHiBlackColor},
tablewriter.Colors{tablewriter.Bold, tablewriter.FgBlackColor})
table.SetFooterColor(tablewriter.Colors{}, tablewriter.Colors{},
tablewriter.Colors{tablewriter.Bold},
tablewriter.Colors{tablewriter.FgHiRedColor})
colorData1 := []string{"TestCOLOR1Merge", "HelloCol2 - COLOR1", "HelloCol3 - COLOR1", "HelloCol4 - COLOR1"}
colorData2 := []string{"TestCOLOR2Merge", "HelloCol2 - COLOR2", "HelloCol3 - COLOR2", "HelloCol4 - COLOR2"}
for i, row := range data {
if i == 4 {
table.Rich(colorData1, []tablewriter.Colors{tablewriter.Colors{}, tablewriter.Colors{tablewriter.Normal, tablewriter.FgCyanColor}, tablewriter.Colors{tablewriter.Bold, tablewriter.FgWhiteColor}, tablewriter.Colors{}})
table.Rich(colorData2, []tablewriter.Colors{tablewriter.Colors{tablewriter.Normal, tablewriter.FgMagentaColor}, tablewriter.Colors{}, tablewriter.Colors{tablewriter.Bold, tablewriter.BgRedColor}, tablewriter.Colors{tablewriter.FgHiGreenColor, tablewriter.Italic, tablewriter.BgHiCyanColor}})
}
table.Append(row)
}
table.SetAutoMergeCells(true)
table.Render()
```
##### Table cells with color Output
![Table cells with Color](https://user-images.githubusercontent.com/9064687/63969376-bcd88d80-ca6f-11e9-9466-c3d954700b25.png)
#### Example 9 - Set table caption
```go
data := [][]string{
[]string{"A", "The Good", "500"},
[]string{"B", "The Very very Bad Man", "288"},
[]string{"C", "The Ugly", "120"},
[]string{"D", "The Gopher", "800"},
}
table := tablewriter.NewWriter(os.Stdout)
table.SetHeader([]string{"Name", "Sign", "Rating"})
table.SetCaption(true, "Movie ratings.")
for _, v := range data {
table.Append(v)
}
table.Render() // Send output
```
Note: Caption text will wrap with total width of rendered table.
##### Output 9
```
+------+-----------------------+--------+
| NAME | SIGN | RATING |
+------+-----------------------+--------+
| A | The Good | 500 |
| B | The Very very Bad Man | 288 |
| C | The Ugly | 120 |
| D | The Gopher | 800 |
+------+-----------------------+--------+
Movie ratings.
```
#### Example 10 - Set NoWhiteSpace and TablePadding option
```go
data := [][]string{
{"node1.example.com", "Ready", "compute", "1.11"},
{"node2.example.com", "Ready", "compute", "1.11"},
{"node3.example.com", "Ready", "compute", "1.11"},
{"node4.example.com", "NotReady", "compute", "1.11"},
}
table := tablewriter.NewWriter(os.Stdout)
table.SetHeader([]string{"Name", "Status", "Role", "Version"})
table.SetAutoWrapText(false)
table.SetAutoFormatHeaders(true)
table.SetHeaderAlignment(ALIGN_LEFT)
table.SetAlignment(ALIGN_LEFT)
table.SetCenterSeparator("")
table.SetColumnSeparator("")
table.SetRowSeparator("")
table.SetHeaderLine(false)
table.SetBorder(false)
table.SetTablePadding("\t") // pad with tabs
table.SetNoWhiteSpace(true)
table.AppendBulk(data) // Add Bulk Data
table.Render()
```
##### Output 10
```
NAME STATUS ROLE VERSION
node1.example.com Ready compute 1.11
node2.example.com Ready compute 1.11
node3.example.com Ready compute 1.11
node4.example.com NotReady compute 1.11
```
#### Render table into a string
Instead of rendering the table to `io.Stdout` you can also render it into a string. Go 1.10 introduced the `strings.Builder` type which implements the `io.Writer` interface and can therefore be used for this task. Example:
```go
package main
import (
"strings"
"fmt"
"github.com/olekukonko/tablewriter"
)
func main() {
tableString := &strings.Builder{}
table := tablewriter.NewWriter(tableString)
/*
* Code to fill the table
*/
table.Render()
fmt.Println(tableString.String())
}
```
#### TODO
- ~~Import Directly from CSV~~ - `done`
- ~~Support for `SetFooter`~~ - `done`
- ~~Support for `SetBorder`~~ - `done`
- ~~Support table with uneven rows~~ - `done`
- ~~Support custom alignment~~
- General Improvement & Optimisation
- `NewHTML` Parse table from HTML

52
tests/vendor/github.com/olekukonko/tablewriter/csv.go generated vendored Normal file
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// Copyright 2014 Oleku Konko All rights reserved.
// Use of this source code is governed by a MIT
// license that can be found in the LICENSE file.
// This module is a Table Writer API for the Go Programming Language.
// The protocols were written in pure Go and works on windows and unix systems
package tablewriter
import (
"encoding/csv"
"io"
"os"
)
// Start A new table by importing from a CSV file
// Takes io.Writer and csv File name
func NewCSV(writer io.Writer, fileName string, hasHeader bool) (*Table, error) {
file, err := os.Open(fileName)
if err != nil {
return &Table{}, err
}
defer file.Close()
csvReader := csv.NewReader(file)
t, err := NewCSVReader(writer, csvReader, hasHeader)
return t, err
}
// Start a New Table Writer with csv.Reader
// This enables customisation such as reader.Comma = ';'
// See http://golang.org/src/pkg/encoding/csv/reader.go?s=3213:3671#L94
func NewCSVReader(writer io.Writer, csvReader *csv.Reader, hasHeader bool) (*Table, error) {
t := NewWriter(writer)
if hasHeader {
// Read the first row
headers, err := csvReader.Read()
if err != nil {
return &Table{}, err
}
t.SetHeader(headers)
}
for {
record, err := csvReader.Read()
if err == io.EOF {
break
} else if err != nil {
return &Table{}, err
}
t.Append(record)
}
return t, nil
}

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tests/vendor/github.com/olekukonko/tablewriter/table_with_color.go generated vendored Normal file
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package tablewriter
import (
"fmt"
"strconv"
"strings"
)
const ESC = "\033"
const SEP = ";"
const (
BgBlackColor int = iota + 40
BgRedColor
BgGreenColor
BgYellowColor
BgBlueColor
BgMagentaColor
BgCyanColor
BgWhiteColor
)
const (
FgBlackColor int = iota + 30
FgRedColor
FgGreenColor
FgYellowColor
FgBlueColor
FgMagentaColor
FgCyanColor
FgWhiteColor
)
const (
BgHiBlackColor int = iota + 100
BgHiRedColor
BgHiGreenColor
BgHiYellowColor
BgHiBlueColor
BgHiMagentaColor
BgHiCyanColor
BgHiWhiteColor
)
const (
FgHiBlackColor int = iota + 90
FgHiRedColor
FgHiGreenColor
FgHiYellowColor
FgHiBlueColor
FgHiMagentaColor
FgHiCyanColor
FgHiWhiteColor
)
const (
Normal = 0
Bold = 1
UnderlineSingle = 4
Italic
)
type Colors []int
func startFormat(seq string) string {
return fmt.Sprintf("%s[%sm", ESC, seq)
}
func stopFormat() string {
return fmt.Sprintf("%s[%dm", ESC, Normal)
}
// Making the SGR (Select Graphic Rendition) sequence.
func makeSequence(codes []int) string {
codesInString := []string{}
for _, code := range codes {
codesInString = append(codesInString, strconv.Itoa(code))
}
return strings.Join(codesInString, SEP)
}
// Adding ANSI escape sequences before and after string
func format(s string, codes interface{}) string {
var seq string
switch v := codes.(type) {
case string:
seq = v
case []int:
seq = makeSequence(v)
case Colors:
seq = makeSequence(v)
default:
return s
}
if len(seq) == 0 {
return s
}
return startFormat(seq) + s + stopFormat()
}
// Adding header colors (ANSI codes)
func (t *Table) SetHeaderColor(colors ...Colors) {
if t.colSize != len(colors) {
panic("Number of header colors must be equal to number of headers.")
}
for i := 0; i < len(colors); i++ {
t.headerParams = append(t.headerParams, makeSequence(colors[i]))
}
}
// Adding column colors (ANSI codes)
func (t *Table) SetColumnColor(colors ...Colors) {
if t.colSize != len(colors) {
panic("Number of column colors must be equal to number of headers.")
}
for i := 0; i < len(colors); i++ {
t.columnsParams = append(t.columnsParams, makeSequence(colors[i]))
}
}
// Adding column colors (ANSI codes)
func (t *Table) SetFooterColor(colors ...Colors) {
if len(t.footers) != len(colors) {
panic("Number of footer colors must be equal to number of footer.")
}
for i := 0; i < len(colors); i++ {
t.footerParams = append(t.footerParams, makeSequence(colors[i]))
}
}
func Color(colors ...int) []int {
return colors
}

93
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// Copyright 2014 Oleku Konko All rights reserved.
// Use of this source code is governed by a MIT
// license that can be found in the LICENSE file.
// This module is a Table Writer API for the Go Programming Language.
// The protocols were written in pure Go and works on windows and unix systems
package tablewriter
import (
"math"
"regexp"
"strings"
"github.com/mattn/go-runewidth"
)
var ansi = regexp.MustCompile("\033\\[(?:[0-9]{1,3}(?:;[0-9]{1,3})*)?[m|K]")
func DisplayWidth(str string) int {
return runewidth.StringWidth(ansi.ReplaceAllLiteralString(str, ""))
}
// Simple Condition for string
// Returns value based on condition
func ConditionString(cond bool, valid, inValid string) string {
if cond {
return valid
}
return inValid
}
func isNumOrSpace(r rune) bool {
return ('0' <= r && r <= '9') || r == ' '
}
// Format Table Header
// Replace _ , . and spaces
func Title(name string) string {
origLen := len(name)
rs := []rune(name)
for i, r := range rs {
switch r {
case '_':
rs[i] = ' '
case '.':
// ignore floating number 0.0
if (i != 0 && !isNumOrSpace(rs[i-1])) || (i != len(rs)-1 && !isNumOrSpace(rs[i+1])) {
rs[i] = ' '
}
}
}
name = string(rs)
name = strings.TrimSpace(name)
if len(name) == 0 && origLen > 0 {
// Keep at least one character. This is important to preserve
// empty lines in multi-line headers/footers.
name = " "
}
return strings.ToUpper(name)
}
// Pad String
// Attempts to place string in the center
func Pad(s, pad string, width int) string {
gap := width - DisplayWidth(s)
if gap > 0 {
gapLeft := int(math.Ceil(float64(gap / 2)))
gapRight := gap - gapLeft
return strings.Repeat(string(pad), gapLeft) + s + strings.Repeat(string(pad), gapRight)
}
return s
}
// Pad String Right position
// This would place string at the left side of the screen
func PadRight(s, pad string, width int) string {
gap := width - DisplayWidth(s)
if gap > 0 {
return s + strings.Repeat(string(pad), gap)
}
return s
}
// Pad String Left position
// This would place string at the right side of the screen
func PadLeft(s, pad string, width int) string {
gap := width - DisplayWidth(s)
if gap > 0 {
return strings.Repeat(string(pad), gap) + s
}
return s
}

99
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// Copyright 2014 Oleku Konko All rights reserved.
// Use of this source code is governed by a MIT
// license that can be found in the LICENSE file.
// This module is a Table Writer API for the Go Programming Language.
// The protocols were written in pure Go and works on windows and unix systems
package tablewriter
import (
"math"
"strings"
"github.com/mattn/go-runewidth"
)
var (
nl = "\n"
sp = " "
)
const defaultPenalty = 1e5
// Wrap wraps s into a paragraph of lines of length lim, with minimal
// raggedness.
func WrapString(s string, lim int) ([]string, int) {
words := strings.Split(strings.Replace(s, nl, sp, -1), sp)
var lines []string
max := 0
for _, v := range words {
max = runewidth.StringWidth(v)
if max > lim {
lim = max
}
}
for _, line := range WrapWords(words, 1, lim, defaultPenalty) {
lines = append(lines, strings.Join(line, sp))
}
return lines, lim
}
// WrapWords is the low-level line-breaking algorithm, useful if you need more
// control over the details of the text wrapping process. For most uses,
// WrapString will be sufficient and more convenient.
//
// WrapWords splits a list of words into lines with minimal "raggedness",
// treating each rune as one unit, accounting for spc units between adjacent
// words on each line, and attempting to limit lines to lim units. Raggedness
// is the total error over all lines, where error is the square of the
// difference of the length of the line and lim. Too-long lines (which only
// happen when a single word is longer than lim units) have pen penalty units
// added to the error.
func WrapWords(words []string, spc, lim, pen int) [][]string {
n := len(words)
length := make([][]int, n)
for i := 0; i < n; i++ {
length[i] = make([]int, n)
length[i][i] = runewidth.StringWidth(words[i])
for j := i + 1; j < n; j++ {
length[i][j] = length[i][j-1] + spc + runewidth.StringWidth(words[j])
}
}
nbrk := make([]int, n)
cost := make([]int, n)
for i := range cost {
cost[i] = math.MaxInt32
}
for i := n - 1; i >= 0; i-- {
if length[i][n-1] <= lim {
cost[i] = 0
nbrk[i] = n
} else {
for j := i + 1; j < n; j++ {
d := lim - length[i][j-1]
c := d*d + cost[j]
if length[i][j-1] > lim {
c += pen // too-long lines get a worse penalty
}
if c < cost[i] {
cost[i] = c
nbrk[i] = j
}
}
}
}
var lines [][]string
i := 0
for i < n {
lines = append(lines, words[i:nbrk[i]])
i = nbrk[i]
}
return lines
}
// getLines decomposes a multiline string into a slice of strings.
func getLines(s string) []string {
return strings.Split(s, nl)
}

27
tests/vendor/github.com/pmezard/go-difflib/LICENSE generated vendored Normal file
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@ -0,0 +1,27 @@
Copyright (c) 2013, Patrick Mezard
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
The names of its contributors may not be used to endorse or promote
products derived from this software without specific prior written
permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

772
tests/vendor/github.com/pmezard/go-difflib/difflib/difflib.go generated vendored Normal file
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// Package difflib is a partial port of Python difflib module.
//
// It provides tools to compare sequences of strings and generate textual diffs.
//
// The following class and functions have been ported:
//
// - SequenceMatcher
//
// - unified_diff
//
// - context_diff
//
// Getting unified diffs was the main goal of the port. Keep in mind this code
// is mostly suitable to output text differences in a human friendly way, there
// are no guarantees generated diffs are consumable by patch(1).
package difflib
import (
"bufio"
"bytes"
"fmt"
"io"
"strings"
)
func min(a, b int) int {
if a < b {
return a
}
return b
}
func max(a, b int) int {
if a > b {
return a
}
return b
}
func calculateRatio(matches, length int) float64 {
if length > 0 {
return 2.0 * float64(matches) / float64(length)
}
return 1.0
}
type Match struct {
A int
B int
Size int
}
type OpCode struct {
Tag byte
I1 int
I2 int
J1 int
J2 int
}
// SequenceMatcher compares sequence of strings. The basic
// algorithm predates, and is a little fancier than, an algorithm
// published in the late 1980's by Ratcliff and Obershelp under the
// hyperbolic name "gestalt pattern matching". The basic idea is to find
// the longest contiguous matching subsequence that contains no "junk"
// elements (R-O doesn't address junk). The same idea is then applied
// recursively to the pieces of the sequences to the left and to the right
// of the matching subsequence. This does not yield minimal edit
// sequences, but does tend to yield matches that "look right" to people.
//
// SequenceMatcher tries to compute a "human-friendly diff" between two
// sequences. Unlike e.g. UNIX(tm) diff, the fundamental notion is the
// longest *contiguous* & junk-free matching subsequence. That's what
// catches peoples' eyes. The Windows(tm) windiff has another interesting
// notion, pairing up elements that appear uniquely in each sequence.
// That, and the method here, appear to yield more intuitive difference
// reports than does diff. This method appears to be the least vulnerable
// to synching up on blocks of "junk lines", though (like blank lines in
// ordinary text files, or maybe "<P>" lines in HTML files). That may be
// because this is the only method of the 3 that has a *concept* of
// "junk" <wink>.
//
// Timing: Basic R-O is cubic time worst case and quadratic time expected
// case. SequenceMatcher is quadratic time for the worst case and has
// expected-case behavior dependent in a complicated way on how many
// elements the sequences have in common; best case time is linear.
type SequenceMatcher struct {
a []string
b []string
b2j map[string][]int
IsJunk func(string) bool
autoJunk bool
bJunk map[string]struct{}
matchingBlocks []Match
fullBCount map[string]int
bPopular map[string]struct{}
opCodes []OpCode
}
func NewMatcher(a, b []string) *SequenceMatcher {
m := SequenceMatcher{autoJunk: true}
m.SetSeqs(a, b)
return &m
}
func NewMatcherWithJunk(a, b []string, autoJunk bool,
isJunk func(string) bool) *SequenceMatcher {
m := SequenceMatcher{IsJunk: isJunk, autoJunk: autoJunk}
m.SetSeqs(a, b)
return &m
}
// Set two sequences to be compared.
func (m *SequenceMatcher) SetSeqs(a, b []string) {
m.SetSeq1(a)
m.SetSeq2(b)
}
// Set the first sequence to be compared. The second sequence to be compared is
// not changed.
//
// SequenceMatcher computes and caches detailed information about the second
// sequence, so if you want to compare one sequence S against many sequences,
// use .SetSeq2(s) once and call .SetSeq1(x) repeatedly for each of the other
// sequences.
//
// See also SetSeqs() and SetSeq2().
func (m *SequenceMatcher) SetSeq1(a []string) {
if &a == &m.a {
return
}
m.a = a
m.matchingBlocks = nil
m.opCodes = nil
}
// Set the second sequence to be compared. The first sequence to be compared is
// not changed.
func (m *SequenceMatcher) SetSeq2(b []string) {
if &b == &m.b {
return
}
m.b = b
m.matchingBlocks = nil
m.opCodes = nil
m.fullBCount = nil
m.chainB()
}
func (m *SequenceMatcher) chainB() {
// Populate line -> index mapping
b2j := map[string][]int{}
for i, s := range m.b {
indices := b2j[s]
indices = append(indices, i)
b2j[s] = indices
}
// Purge junk elements
m.bJunk = map[string]struct{}{}
if m.IsJunk != nil {
junk := m.bJunk
for s, _ := range b2j {
if m.IsJunk(s) {
junk[s] = struct{}{}
}
}
for s, _ := range junk {
delete(b2j, s)
}
}
// Purge remaining popular elements
popular := map[string]struct{}{}
n := len(m.b)
if m.autoJunk && n >= 200 {
ntest := n/100 + 1
for s, indices := range b2j {
if len(indices) > ntest {
popular[s] = struct{}{}
}
}
for s, _ := range popular {
delete(b2j, s)
}
}
m.bPopular = popular
m.b2j = b2j
}
func (m *SequenceMatcher) isBJunk(s string) bool {
_, ok := m.bJunk[s]
return ok
}
// Find longest matching block in a[alo:ahi] and b[blo:bhi].
//
// If IsJunk is not defined:
//
// Return (i,j,k) such that a[i:i+k] is equal to b[j:j+k], where
// alo <= i <= i+k <= ahi
// blo <= j <= j+k <= bhi
// and for all (i',j',k') meeting those conditions,
// k >= k'
// i <= i'
// and if i == i', j <= j'
//
// In other words, of all maximal matching blocks, return one that
// starts earliest in a, and of all those maximal matching blocks that
// start earliest in a, return the one that starts earliest in b.
//
// If IsJunk is defined, first the longest matching block is
// determined as above, but with the additional restriction that no
// junk element appears in the block. Then that block is extended as
// far as possible by matching (only) junk elements on both sides. So
// the resulting block never matches on junk except as identical junk
// happens to be adjacent to an "interesting" match.
//
// If no blocks match, return (alo, blo, 0).
func (m *SequenceMatcher) findLongestMatch(alo, ahi, blo, bhi int) Match {
// CAUTION: stripping common prefix or suffix would be incorrect.
// E.g.,
// ab
// acab
// Longest matching block is "ab", but if common prefix is
// stripped, it's "a" (tied with "b"). UNIX(tm) diff does so
// strip, so ends up claiming that ab is changed to acab by
// inserting "ca" in the middle. That's minimal but unintuitive:
// "it's obvious" that someone inserted "ac" at the front.
// Windiff ends up at the same place as diff, but by pairing up
// the unique 'b's and then matching the first two 'a's.
besti, bestj, bestsize := alo, blo, 0
// find longest junk-free match
// during an iteration of the loop, j2len[j] = length of longest
// junk-free match ending with a[i-1] and b[j]
j2len := map[int]int{}
for i := alo; i != ahi; i++ {
// look at all instances of a[i] in b; note that because
// b2j has no junk keys, the loop is skipped if a[i] is junk
newj2len := map[int]int{}
for _, j := range m.b2j[m.a[i]] {
// a[i] matches b[j]
if j < blo {
continue
}
if j >= bhi {
break
}
k := j2len[j-1] + 1
newj2len[j] = k
if k > bestsize {
besti, bestj, bestsize = i-k+1, j-k+1, k
}
}
j2len = newj2len
}
// Extend the best by non-junk elements on each end. In particular,
// "popular" non-junk elements aren't in b2j, which greatly speeds
// the inner loop above, but also means "the best" match so far
// doesn't contain any junk *or* popular non-junk elements.
for besti > alo && bestj > blo && !m.isBJunk(m.b[bestj-1]) &&
m.a[besti-1] == m.b[bestj-1] {
besti, bestj, bestsize = besti-1, bestj-1, bestsize+1
}
for besti+bestsize < ahi && bestj+bestsize < bhi &&
!m.isBJunk(m.b[bestj+bestsize]) &&
m.a[besti+bestsize] == m.b[bestj+bestsize] {
bestsize += 1
}
// Now that we have a wholly interesting match (albeit possibly
// empty!), we may as well suck up the matching junk on each
// side of it too. Can't think of a good reason not to, and it
// saves post-processing the (possibly considerable) expense of
// figuring out what to do with it. In the case of an empty
// interesting match, this is clearly the right thing to do,
// because no other kind of match is possible in the regions.
for besti > alo && bestj > blo && m.isBJunk(m.b[bestj-1]) &&
m.a[besti-1] == m.b[bestj-1] {
besti, bestj, bestsize = besti-1, bestj-1, bestsize+1
}
for besti+bestsize < ahi && bestj+bestsize < bhi &&
m.isBJunk(m.b[bestj+bestsize]) &&
m.a[besti+bestsize] == m.b[bestj+bestsize] {
bestsize += 1
}
return Match{A: besti, B: bestj, Size: bestsize}
}
// Return list of triples describing matching subsequences.
//
// Each triple is of the form (i, j, n), and means that
// a[i:i+n] == b[j:j+n]. The triples are monotonically increasing in
// i and in j. It's also guaranteed that if (i, j, n) and (i', j', n') are
// adjacent triples in the list, and the second is not the last triple in the
// list, then i+n != i' or j+n != j'. IOW, adjacent triples never describe
// adjacent equal blocks.
//
// The last triple is a dummy, (len(a), len(b), 0), and is the only
// triple with n==0.
func (m *SequenceMatcher) GetMatchingBlocks() []Match {
if m.matchingBlocks != nil {
return m.matchingBlocks
}
var matchBlocks func(alo, ahi, blo, bhi int, matched []Match) []Match
matchBlocks = func(alo, ahi, blo, bhi int, matched []Match) []Match {
match := m.findLongestMatch(alo, ahi, blo, bhi)
i, j, k := match.A, match.B, match.Size
if match.Size > 0 {
if alo < i && blo < j {
matched = matchBlocks(alo, i, blo, j, matched)
}
matched = append(matched, match)
if i+k < ahi && j+k < bhi {
matched = matchBlocks(i+k, ahi, j+k, bhi, matched)
}
}
return matched
}
matched := matchBlocks(0, len(m.a), 0, len(m.b), nil)
// It's possible that we have adjacent equal blocks in the
// matching_blocks list now.
nonAdjacent := []Match{}
i1, j1, k1 := 0, 0, 0
for _, b := range matched {
// Is this block adjacent to i1, j1, k1?
i2, j2, k2 := b.A, b.B, b.Size
if i1+k1 == i2 && j1+k1 == j2 {
// Yes, so collapse them -- this just increases the length of
// the first block by the length of the second, and the first
// block so lengthened remains the block to compare against.
k1 += k2
} else {
// Not adjacent. Remember the first block (k1==0 means it's
// the dummy we started with), and make the second block the
// new block to compare against.
if k1 > 0 {
nonAdjacent = append(nonAdjacent, Match{i1, j1, k1})
}
i1, j1, k1 = i2, j2, k2
}
}
if k1 > 0 {
nonAdjacent = append(nonAdjacent, Match{i1, j1, k1})
}
nonAdjacent = append(nonAdjacent, Match{len(m.a), len(m.b), 0})
m.matchingBlocks = nonAdjacent
return m.matchingBlocks
}
// Return list of 5-tuples describing how to turn a into b.
//
// Each tuple is of the form (tag, i1, i2, j1, j2). The first tuple
// has i1 == j1 == 0, and remaining tuples have i1 == the i2 from the
// tuple preceding it, and likewise for j1 == the previous j2.
//
// The tags are characters, with these meanings:
//
// 'r' (replace): a[i1:i2] should be replaced by b[j1:j2]
//
// 'd' (delete): a[i1:i2] should be deleted, j1==j2 in this case.
//
// 'i' (insert): b[j1:j2] should be inserted at a[i1:i1], i1==i2 in this case.
//
// 'e' (equal): a[i1:i2] == b[j1:j2]
func (m *SequenceMatcher) GetOpCodes() []OpCode {
if m.opCodes != nil {
return m.opCodes
}
i, j := 0, 0
matching := m.GetMatchingBlocks()
opCodes := make([]OpCode, 0, len(matching))
for _, m := range matching {
// invariant: we've pumped out correct diffs to change
// a[:i] into b[:j], and the next matching block is
// a[ai:ai+size] == b[bj:bj+size]. So we need to pump
// out a diff to change a[i:ai] into b[j:bj], pump out
// the matching block, and move (i,j) beyond the match
ai, bj, size := m.A, m.B, m.Size
tag := byte(0)
if i < ai && j < bj {
tag = 'r'
} else if i < ai {
tag = 'd'
} else if j < bj {
tag = 'i'
}
if tag > 0 {
opCodes = append(opCodes, OpCode{tag, i, ai, j, bj})
}
i, j = ai+size, bj+size
// the list of matching blocks is terminated by a
// sentinel with size 0
if size > 0 {
opCodes = append(opCodes, OpCode{'e', ai, i, bj, j})
}
}
m.opCodes = opCodes
return m.opCodes
}
// Isolate change clusters by eliminating ranges with no changes.
//
// Return a generator of groups with up to n lines of context.
// Each group is in the same format as returned by GetOpCodes().
func (m *SequenceMatcher) GetGroupedOpCodes(n int) [][]OpCode {
if n < 0 {
n = 3
}
codes := m.GetOpCodes()
if len(codes) == 0 {
codes = []OpCode{OpCode{'e', 0, 1, 0, 1}}
}
// Fixup leading and trailing groups if they show no changes.
if codes[0].Tag == 'e' {
c := codes[0]
i1, i2, j1, j2 := c.I1, c.I2, c.J1, c.J2
codes[0] = OpCode{c.Tag, max(i1, i2-n), i2, max(j1, j2-n), j2}
}
if codes[len(codes)-1].Tag == 'e' {
c := codes[len(codes)-1]
i1, i2, j1, j2 := c.I1, c.I2, c.J1, c.J2
codes[len(codes)-1] = OpCode{c.Tag, i1, min(i2, i1+n), j1, min(j2, j1+n)}
}
nn := n + n
groups := [][]OpCode{}
group := []OpCode{}
for _, c := range codes {
i1, i2, j1, j2 := c.I1, c.I2, c.J1, c.J2
// End the current group and start a new one whenever
// there is a large range with no changes.
if c.Tag == 'e' && i2-i1 > nn {
group = append(group, OpCode{c.Tag, i1, min(i2, i1+n),
j1, min(j2, j1+n)})
groups = append(groups, group)
group = []OpCode{}
i1, j1 = max(i1, i2-n), max(j1, j2-n)
}
group = append(group, OpCode{c.Tag, i1, i2, j1, j2})
}
if len(group) > 0 && !(len(group) == 1 && group[0].Tag == 'e') {
groups = append(groups, group)
}
return groups
}
// Return a measure of the sequences' similarity (float in [0,1]).
//
// Where T is the total number of elements in both sequences, and
// M is the number of matches, this is 2.0*M / T.
// Note that this is 1 if the sequences are identical, and 0 if
// they have nothing in common.
//
// .Ratio() is expensive to compute if you haven't already computed
// .GetMatchingBlocks() or .GetOpCodes(), in which case you may
// want to try .QuickRatio() or .RealQuickRation() first to get an
// upper bound.
func (m *SequenceMatcher) Ratio() float64 {
matches := 0
for _, m := range m.GetMatchingBlocks() {
matches += m.Size
}
return calculateRatio(matches, len(m.a)+len(m.b))
}
// Return an upper bound on ratio() relatively quickly.
//
// This isn't defined beyond that it is an upper bound on .Ratio(), and
// is faster to compute.
func (m *SequenceMatcher) QuickRatio() float64 {
// viewing a and b as multisets, set matches to the cardinality
// of their intersection; this counts the number of matches
// without regard to order, so is clearly an upper bound
if m.fullBCount == nil {
m.fullBCount = map[string]int{}
for _, s := range m.b {
m.fullBCount[s] = m.fullBCount[s] + 1
}
}
// avail[x] is the number of times x appears in 'b' less the
// number of times we've seen it in 'a' so far ... kinda
avail := map[string]int{}
matches := 0
for _, s := range m.a {
n, ok := avail[s]
if !ok {
n = m.fullBCount[s]
}
avail[s] = n - 1
if n > 0 {
matches += 1
}
}
return calculateRatio(matches, len(m.a)+len(m.b))
}
// Return an upper bound on ratio() very quickly.
//
// This isn't defined beyond that it is an upper bound on .Ratio(), and
// is faster to compute than either .Ratio() or .QuickRatio().
func (m *SequenceMatcher) RealQuickRatio() float64 {
la, lb := len(m.a), len(m.b)
return calculateRatio(min(la, lb), la+lb)
}
// Convert range to the "ed" format
func formatRangeUnified(start, stop int) string {
// Per the diff spec at http://www.unix.org/single_unix_specification/
beginning := start + 1 // lines start numbering with one
length := stop - start
if length == 1 {
return fmt.Sprintf("%d", beginning)
}
if length == 0 {
beginning -= 1 // empty ranges begin at line just before the range
}
return fmt.Sprintf("%d,%d", beginning, length)
}
// Unified diff parameters
type UnifiedDiff struct {
A []string // First sequence lines
FromFile string // First file name
FromDate string // First file time
B []string // Second sequence lines
ToFile string // Second file name
ToDate string // Second file time
Eol string // Headers end of line, defaults to LF
Context int // Number of context lines
}
// Compare two sequences of lines; generate the delta as a unified diff.
//
// Unified diffs are a compact way of showing line changes and a few
// lines of context. The number of context lines is set by 'n' which
// defaults to three.
//
// By default, the diff control lines (those with ---, +++, or @@) are
// created with a trailing newline. This is helpful so that inputs
// created from file.readlines() result in diffs that are suitable for
// file.writelines() since both the inputs and outputs have trailing
// newlines.
//
// For inputs that do not have trailing newlines, set the lineterm
// argument to "" so that the output will be uniformly newline free.
//
// The unidiff format normally has a header for filenames and modification
// times. Any or all of these may be specified using strings for
// 'fromfile', 'tofile', 'fromfiledate', and 'tofiledate'.
// The modification times are normally expressed in the ISO 8601 format.
func WriteUnifiedDiff(writer io.Writer, diff UnifiedDiff) error {
buf := bufio.NewWriter(writer)
defer buf.Flush()
wf := func(format string, args ...interface{}) error {
_, err := buf.WriteString(fmt.Sprintf(format, args...))
return err
}
ws := func(s string) error {
_, err := buf.WriteString(s)
return err
}
if len(diff.Eol) == 0 {
diff.Eol = "\n"
}
started := false
m := NewMatcher(diff.A, diff.B)
for _, g := range m.GetGroupedOpCodes(diff.Context) {
if !started {
started = true
fromDate := ""
if len(diff.FromDate) > 0 {
fromDate = "\t" + diff.FromDate
}
toDate := ""
if len(diff.ToDate) > 0 {
toDate = "\t" + diff.ToDate
}
if diff.FromFile != "" || diff.ToFile != "" {
err := wf("--- %s%s%s", diff.FromFile, fromDate, diff.Eol)
if err != nil {
return err
}
err = wf("+++ %s%s%s", diff.ToFile, toDate, diff.Eol)
if err != nil {
return err
}
}
}
first, last := g[0], g[len(g)-1]
range1 := formatRangeUnified(first.I1, last.I2)
range2 := formatRangeUnified(first.J1, last.J2)
if err := wf("@@ -%s +%s @@%s", range1, range2, diff.Eol); err != nil {
return err
}
for _, c := range g {
i1, i2, j1, j2 := c.I1, c.I2, c.J1, c.J2
if c.Tag == 'e' {
for _, line := range diff.A[i1:i2] {
if err := ws(" " + line); err != nil {
return err
}
}
continue
}
if c.Tag == 'r' || c.Tag == 'd' {
for _, line := range diff.A[i1:i2] {
if err := ws("-" + line); err != nil {
return err
}
}
}
if c.Tag == 'r' || c.Tag == 'i' {
for _, line := range diff.B[j1:j2] {
if err := ws("+" + line); err != nil {
return err
}
}
}
}
}
return nil
}
// Like WriteUnifiedDiff but returns the diff a string.
func GetUnifiedDiffString(diff UnifiedDiff) (string, error) {
w := &bytes.Buffer{}
err := WriteUnifiedDiff(w, diff)
return string(w.Bytes()), err
}
// Convert range to the "ed" format.
func formatRangeContext(start, stop int) string {
// Per the diff spec at http://www.unix.org/single_unix_specification/
beginning := start + 1 // lines start numbering with one
length := stop - start
if length == 0 {
beginning -= 1 // empty ranges begin at line just before the range
}
if length <= 1 {
return fmt.Sprintf("%d", beginning)
}
return fmt.Sprintf("%d,%d", beginning, beginning+length-1)
}
type ContextDiff UnifiedDiff
// Compare two sequences of lines; generate the delta as a context diff.
//
// Context diffs are a compact way of showing line changes and a few
// lines of context. The number of context lines is set by diff.Context
// which defaults to three.
//
// By default, the diff control lines (those with *** or ---) are
// created with a trailing newline.
//
// For inputs that do not have trailing newlines, set the diff.Eol
// argument to "" so that the output will be uniformly newline free.
//
// The context diff format normally has a header for filenames and
// modification times. Any or all of these may be specified using
// strings for diff.FromFile, diff.ToFile, diff.FromDate, diff.ToDate.
// The modification times are normally expressed in the ISO 8601 format.
// If not specified, the strings default to blanks.
func WriteContextDiff(writer io.Writer, diff ContextDiff) error {
buf := bufio.NewWriter(writer)
defer buf.Flush()
var diffErr error
wf := func(format string, args ...interface{}) {
_, err := buf.WriteString(fmt.Sprintf(format, args...))
if diffErr == nil && err != nil {
diffErr = err
}
}
ws := func(s string) {
_, err := buf.WriteString(s)
if diffErr == nil && err != nil {
diffErr = err
}
}
if len(diff.Eol) == 0 {
diff.Eol = "\n"
}
prefix := map[byte]string{
'i': "+ ",
'd': "- ",
'r': "! ",
'e': " ",
}
started := false
m := NewMatcher(diff.A, diff.B)
for _, g := range m.GetGroupedOpCodes(diff.Context) {
if !started {
started = true
fromDate := ""
if len(diff.FromDate) > 0 {
fromDate = "\t" + diff.FromDate
}
toDate := ""
if len(diff.ToDate) > 0 {
toDate = "\t" + diff.ToDate
}
if diff.FromFile != "" || diff.ToFile != "" {
wf("*** %s%s%s", diff.FromFile, fromDate, diff.Eol)
wf("--- %s%s%s", diff.ToFile, toDate, diff.Eol)
}
}
first, last := g[0], g[len(g)-1]
ws("***************" + diff.Eol)
range1 := formatRangeContext(first.I1, last.I2)
wf("*** %s ****%s", range1, diff.Eol)
for _, c := range g {
if c.Tag == 'r' || c.Tag == 'd' {
for _, cc := range g {
if cc.Tag == 'i' {
continue
}
for _, line := range diff.A[cc.I1:cc.I2] {
ws(prefix[cc.Tag] + line)
}
}
break
}
}
range2 := formatRangeContext(first.J1, last.J2)
wf("--- %s ----%s", range2, diff.Eol)
for _, c := range g {
if c.Tag == 'r' || c.Tag == 'i' {
for _, cc := range g {
if cc.Tag == 'd' {
continue
}
for _, line := range diff.B[cc.J1:cc.J2] {
ws(prefix[cc.Tag] + line)
}
}
break
}
}
}
return diffErr
}
// Like WriteContextDiff but returns the diff a string.
func GetContextDiffString(diff ContextDiff) (string, error) {
w := &bytes.Buffer{}
err := WriteContextDiff(w, diff)
return string(w.Bytes()), err
}
// Split a string on "\n" while preserving them. The output can be used
// as input for UnifiedDiff and ContextDiff structures.
func SplitLines(s string) []string {
lines := strings.SplitAfter(s, "\n")
lines[len(lines)-1] += "\n"
return lines
}

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MIT License
Copyright (c) 2019 Oliver Kuederle
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

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# Unicode Text Segmentation for Go
[![Godoc Reference](https://img.shields.io/badge/godoc-reference-blue.svg)](https://godoc.org/github.com/rivo/uniseg)
[![Go Report](https://img.shields.io/badge/go%20report-A%2B-brightgreen.svg)](https://goreportcard.com/report/github.com/rivo/uniseg)
This Go package implements Unicode Text Segmentation according to [Unicode Standard Annex #29](http://unicode.org/reports/tr29/) (Unicode version 12.0.0).
At this point, only the determination of grapheme cluster boundaries is implemented.
## Background
In Go, [strings are read-only slices of bytes](https://blog.golang.org/strings). They can be turned into Unicode code points using the `for` loop or by casting: `[]rune(str)`. However, multiple code points may be combined into one user-perceived character or what the Unicode specification calls "grapheme cluster". Here are some examples:
|String|Bytes (UTF-8)|Code points (runes)|Grapheme clusters|
|-|-|-|-|
|Käse|6 bytes: `4b 61 cc 88 73 65`|5 code points: `4b 61 308 73 65`|4 clusters: `[4b],[61 308],[73],[65]`|
|🏳️‍🌈|14 bytes: `f0 9f 8f b3 ef b8 8f e2 80 8d f0 9f 8c 88`|4 code points: `1f3f3 fe0f 200d 1f308`|1 cluster: `[1f3f3 fe0f 200d 1f308]`|
|🇩🇪|8 bytes: `f0 9f 87 a9 f0 9f 87 aa`|2 code points: `1f1e9 1f1ea`|1 cluster: `[1f1e9 1f1ea]`|
This package provides a tool to iterate over these grapheme clusters. This may be used to determine the number of user-perceived characters, to split strings in their intended places, or to extract individual characters which form a unit.
## Installation
```bash
go get github.com/rivo/uniseg
```
## Basic Example
```go
package uniseg
import (
"fmt"
"github.com/rivo/uniseg"
)
func main() {
gr := uniseg.NewGraphemes("👍🏼!")
for gr.Next() {
fmt.Printf("%x ", gr.Runes())
}
// Output: [1f44d 1f3fc] [21]
}
```
## Documentation
Refer to https://godoc.org/github.com/rivo/uniseg for the package's documentation.
## Dependencies
This package does not depend on any packages outside the standard library.
## Your Feedback
Add your issue here on GitHub. Feel free to get in touch if you have any questions.
## Version
Version tags will be introduced once Golang modules are official. Consider this version 0.1.

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/*
Package uniseg implements Unicode Text Segmentation according to Unicode
Standard Annex #29 (http://unicode.org/reports/tr29/).
At this point, only the determination of grapheme cluster boundaries is
implemented.
*/
package uniseg

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package uniseg
import "unicode/utf8"
// The states of the grapheme cluster parser.
const (
grAny = iota
grCR
grControlLF
grL
grLVV
grLVTT
grPrepend
grExtendedPictographic
grExtendedPictographicZWJ
grRIOdd
grRIEven
)
// The grapheme cluster parser's breaking instructions.
const (
grNoBoundary = iota
grBoundary
)
// The grapheme cluster parser's state transitions. Maps (state, property) to
// (new state, breaking instruction, rule number). The breaking instruction
// always refers to the boundary between the last and next code point.
//
// This map is queried as follows:
//
// 1. Find specific state + specific property. Stop if found.
// 2. Find specific state + any property.
// 3. Find any state + specific property.
// 4. If only (2) or (3) (but not both) was found, stop.
// 5. If both (2) and (3) were found, use state and breaking instruction from
// the transition with the lower rule number, prefer (3) if rule numbers
// are equal. Stop.
// 6. Assume grAny and grBoundary.
var grTransitions = map[[2]int][3]int{
// GB5
{grAny, prCR}: {grCR, grBoundary, 50},
{grAny, prLF}: {grControlLF, grBoundary, 50},
{grAny, prControl}: {grControlLF, grBoundary, 50},
// GB4
{grCR, prAny}: {grAny, grBoundary, 40},
{grControlLF, prAny}: {grAny, grBoundary, 40},
// GB3.
{grCR, prLF}: {grAny, grNoBoundary, 30},
// GB6.
{grAny, prL}: {grL, grBoundary, 9990},
{grL, prL}: {grL, grNoBoundary, 60},
{grL, prV}: {grLVV, grNoBoundary, 60},
{grL, prLV}: {grLVV, grNoBoundary, 60},
{grL, prLVT}: {grLVTT, grNoBoundary, 60},
// GB7.
{grAny, prLV}: {grLVV, grBoundary, 9990},
{grAny, prV}: {grLVV, grBoundary, 9990},
{grLVV, prV}: {grLVV, grNoBoundary, 70},
{grLVV, prT}: {grLVTT, grNoBoundary, 70},
// GB8.
{grAny, prLVT}: {grLVTT, grBoundary, 9990},
{grAny, prT}: {grLVTT, grBoundary, 9990},
{grLVTT, prT}: {grLVTT, grNoBoundary, 80},
// GB9.
{grAny, prExtend}: {grAny, grNoBoundary, 90},
{grAny, prZWJ}: {grAny, grNoBoundary, 90},
// GB9a.
{grAny, prSpacingMark}: {grAny, grNoBoundary, 91},
// GB9b.
{grAny, prPreprend}: {grPrepend, grBoundary, 9990},
{grPrepend, prAny}: {grAny, grNoBoundary, 92},
// GB11.
{grAny, prExtendedPictographic}: {grExtendedPictographic, grBoundary, 9990},
{grExtendedPictographic, prExtend}: {grExtendedPictographic, grNoBoundary, 110},
{grExtendedPictographic, prZWJ}: {grExtendedPictographicZWJ, grNoBoundary, 110},
{grExtendedPictographicZWJ, prExtendedPictographic}: {grExtendedPictographic, grNoBoundary, 110},
// GB12 / GB13.
{grAny, prRegionalIndicator}: {grRIOdd, grBoundary, 9990},
{grRIOdd, prRegionalIndicator}: {grRIEven, grNoBoundary, 120},
{grRIEven, prRegionalIndicator}: {grRIOdd, grBoundary, 120},
}
// Graphemes implements an iterator over Unicode extended grapheme clusters,
// specified in the Unicode Standard Annex #29. Grapheme clusters correspond to
// "user-perceived characters". These characters often consist of multiple
// code points (e.g. the "woman kissing woman" emoji consists of 8 code points:
// woman + ZWJ + heavy black heart (2 code points) + ZWJ + kiss mark + ZWJ +
// woman) and the rules described in Annex #29 must be applied to group those
// code points into clusters perceived by the user as one character.
type Graphemes struct {
// The code points over which this class iterates.
codePoints []rune
// The (byte-based) indices of the code points into the original string plus
// len(original string). Thus, len(indices) = len(codePoints) + 1.
indices []int
// The current grapheme cluster to be returned. These are indices into
// codePoints/indices. If start == end, we either haven't started iterating
// yet (0) or the iteration has already completed (1).
start, end int
// The index of the next code point to be parsed.
pos int
// The current state of the code point parser.
state int
}
// NewGraphemes returns a new grapheme cluster iterator.
func NewGraphemes(s string) *Graphemes {
l := utf8.RuneCountInString(s)
codePoints := make([]rune, l)
indices := make([]int, l+1)
i := 0
for pos, r := range s {
codePoints[i] = r
indices[i] = pos
i++
}
indices[l] = len(s)
g := &Graphemes{
codePoints: codePoints,
indices: indices,
}
g.Next() // Parse ahead.
return g
}
// Next advances the iterator by one grapheme cluster and returns false if no
// clusters are left. This function must be called before the first cluster is
// accessed.
func (g *Graphemes) Next() bool {
g.start = g.end
// The state transition gives us a boundary instruction BEFORE the next code
// point so we always need to stay ahead by one code point.
// Parse the next code point.
for g.pos <= len(g.codePoints) {
// GB2.
if g.pos == len(g.codePoints) {
g.end = g.pos
g.pos++
break
}
// Determine the property of the next character.
nextProperty := property(g.codePoints[g.pos])
g.pos++
// Find the applicable transition.
var boundary bool
transition, ok := grTransitions[[2]int{g.state, nextProperty}]
if ok {
// We have a specific transition. We'll use it.
g.state = transition[0]
boundary = transition[1] == grBoundary
} else {
// No specific transition found. Try the less specific ones.
transAnyProp, okAnyProp := grTransitions[[2]int{g.state, prAny}]
transAnyState, okAnyState := grTransitions[[2]int{grAny, nextProperty}]
if okAnyProp && okAnyState {
// Both apply. We'll use a mix (see comments for grTransitions).
g.state = transAnyState[0]
boundary = transAnyState[1] == grBoundary
if transAnyProp[2] < transAnyState[2] {
g.state = transAnyProp[0]
boundary = transAnyProp[1] == grBoundary
}
} else if okAnyProp {
// We only have a specific state.
g.state = transAnyProp[0]
boundary = transAnyProp[1] == grBoundary
// This branch will probably never be reached because okAnyState will
// always be true given the current transition map. But we keep it here
// for future modifications to the transition map where this may not be
// true anymore.
} else if okAnyState {
// We only have a specific property.
g.state = transAnyState[0]
boundary = transAnyState[1] == grBoundary
} else {
// No known transition. GB999: Any x Any.
g.state = grAny
boundary = true
}
}
// If we found a cluster boundary, let's stop here. The current cluster will
// be the one that just ended.
if g.pos-1 == 0 /* GB1 */ || boundary {
g.end = g.pos - 1
break
}
}
return g.start != g.end
}
// Runes returns a slice of runes (code points) which corresponds to the current
// grapheme cluster. If the iterator is already past the end or Next() has not
// yet been called, nil is returned.
func (g *Graphemes) Runes() []rune {
if g.start == g.end {
return nil
}
return g.codePoints[g.start:g.end]
}
// Str returns a substring of the original string which corresponds to the
// current grapheme cluster. If the iterator is already past the end or Next()
// has not yet been called, an empty string is returned.
func (g *Graphemes) Str() string {
if g.start == g.end {
return ""
}
return string(g.codePoints[g.start:g.end])
}
// Bytes returns a byte slice which corresponds to the current grapheme cluster.
// If the iterator is already past the end or Next() has not yet been called,
// nil is returned.
func (g *Graphemes) Bytes() []byte {
if g.start == g.end {
return nil
}
return []byte(string(g.codePoints[g.start:g.end]))
}
// Positions returns the interval of the current grapheme cluster as byte
// positions into the original string. The first returned value "from" indexes
// the first byte and the second returned value "to" indexes the first byte that
// is not included anymore, i.e. str[from:to] is the current grapheme cluster of
// the original string "str". If Next() has not yet been called, both values are
// 0. If the iterator is already past the end, both values are 1.
func (g *Graphemes) Positions() (int, int) {
return g.indices[g.start], g.indices[g.end]
}
// Reset puts the iterator into its initial state such that the next call to
// Next() sets it to the first grapheme cluster again.
func (g *Graphemes) Reset() {
g.start, g.end, g.pos, g.state = 0, 0, 0, grAny
g.Next() // Parse ahead again.
}
// GraphemeClusterCount returns the number of user-perceived characters
// (grapheme clusters) for the given string. To calculate this number, it
// iterates through the string using the Graphemes iterator.
func GraphemeClusterCount(s string) (n int) {
g := NewGraphemes(s)
for g.Next() {
n++
}
return
}

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*.out
*.swp
*.8
*.6
_obj
_test*
markdown
tags

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sudo: false
language: go
go:
- "1.9.x"
- "1.10.x"
- "1.11.x"
- tip
matrix:
fast_finish: true
allow_failures:
- go: tip
install:
- # Do nothing. This is needed to prevent default install action "go get -t -v ./..." from happening here (we want it to happen inside script step).
script:
- go get -t -v ./...
- diff -u <(echo -n) <(gofmt -d -s .)
- go tool vet .
- go test -v -race ./...

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Blackfriday is distributed under the Simplified BSD License:
Copyright © 2011 Russ Ross
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above
copyright notice, this list of conditions and the following
disclaimer in the documentation and/or other materials provided with
the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.

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Blackfriday
[![Build Status][BuildV2SVG]][BuildV2URL]
[![PkgGoDev][PkgGoDevV2SVG]][PkgGoDevV2URL]
===========
Blackfriday is a [Markdown][1] processor implemented in [Go][2]. It
is paranoid about its input (so you can safely feed it user-supplied
data), it is fast, it supports common extensions (tables, smart
punctuation substitutions, etc.), and it is safe for all utf-8
(unicode) input.
HTML output is currently supported, along with Smartypants
extensions.
It started as a translation from C of [Sundown][3].
Installation
------------
Blackfriday is compatible with modern Go releases in module mode.
With Go installed:
go get github.com/russross/blackfriday
will resolve and add the package to the current development module,
then build and install it. Alternatively, you can achieve the same
if you import it in a package:
import "github.com/russross/blackfriday"
and `go get` without parameters.
Old versions of Go and legacy GOPATH mode might work,
but no effort is made to keep them working.
Versions
--------
Currently maintained and recommended version of Blackfriday is `v2`. It's being
developed on its own branch: https://github.com/russross/blackfriday/tree/v2 and the
documentation is available at
https://pkg.go.dev/github.com/russross/blackfriday/v2.
It is `go get`-able in module mode at `github.com/russross/blackfriday/v2`.
Version 2 offers a number of improvements over v1:
* Cleaned up API
* A separate call to [`Parse`][4], which produces an abstract syntax tree for
the document
* Latest bug fixes
* Flexibility to easily add your own rendering extensions
Potential drawbacks:
* Our benchmarks show v2 to be slightly slower than v1. Currently in the
ballpark of around 15%.
* API breakage. If you can't afford modifying your code to adhere to the new API
and don't care too much about the new features, v2 is probably not for you.
* Several bug fixes are trailing behind and still need to be forward-ported to
v2. See issue [#348](https://github.com/russross/blackfriday/issues/348) for
tracking.
If you are still interested in the legacy `v1`, you can import it from
`github.com/russross/blackfriday`. Documentation for the legacy v1 can be found
here: https://pkg.go.dev/github.com/russross/blackfriday.
Usage
-----
### v1
For basic usage, it is as simple as getting your input into a byte
slice and calling:
```go
output := blackfriday.MarkdownBasic(input)
```
This renders it with no extensions enabled. To get a more useful
feature set, use this instead:
```go
output := blackfriday.MarkdownCommon(input)
```
### v2
For the most sensible markdown processing, it is as simple as getting your input
into a byte slice and calling:
```go
output := blackfriday.Run(input)
```
Your input will be parsed and the output rendered with a set of most popular
extensions enabled. If you want the most basic feature set, corresponding with
the bare Markdown specification, use:
```go
output := blackfriday.Run(input, blackfriday.WithNoExtensions())
```
### Sanitize untrusted content
Blackfriday itself does nothing to protect against malicious content. If you are
dealing with user-supplied markdown, we recommend running Blackfriday's output
through HTML sanitizer such as [Bluemonday][5].
Here's an example of simple usage of Blackfriday together with Bluemonday:
```go
import (
"github.com/microcosm-cc/bluemonday"
"github.com/russross/blackfriday"
)
// ...
unsafe := blackfriday.Run(input)
html := bluemonday.UGCPolicy().SanitizeBytes(unsafe)
```
### Custom options, v1
If you want to customize the set of options, first get a renderer
(currently only the HTML output engine), then use it to
call the more general `Markdown` function. For examples, see the
implementations of `MarkdownBasic` and `MarkdownCommon` in
`markdown.go`.
### Custom options, v2
If you want to customize the set of options, use `blackfriday.WithExtensions`,
`blackfriday.WithRenderer` and `blackfriday.WithRefOverride`.
### `blackfriday-tool`
You can also check out `blackfriday-tool` for a more complete example
of how to use it. Download and install it using:
go get github.com/russross/blackfriday-tool
This is a simple command-line tool that allows you to process a
markdown file using a standalone program. You can also browse the
source directly on github if you are just looking for some example
code:
* <https://github.com/russross/blackfriday-tool>
Note that if you have not already done so, installing
`blackfriday-tool` will be sufficient to download and install
blackfriday in addition to the tool itself. The tool binary will be
installed in `$GOPATH/bin`. This is a statically-linked binary that
can be copied to wherever you need it without worrying about
dependencies and library versions.
### Sanitized anchor names
Blackfriday includes an algorithm for creating sanitized anchor names
corresponding to a given input text. This algorithm is used to create
anchors for headings when `EXTENSION_AUTO_HEADER_IDS` is enabled. The
algorithm has a specification, so that other packages can create
compatible anchor names and links to those anchors.
The specification is located at https://pkg.go.dev/github.com/russross/blackfriday#hdr-Sanitized_Anchor_Names.
[`SanitizedAnchorName`](https://pkg.go.dev/github.com/russross/blackfriday#SanitizedAnchorName) exposes this functionality, and can be used to
create compatible links to the anchor names generated by blackfriday.
This algorithm is also implemented in a small standalone package at
[`github.com/shurcooL/sanitized_anchor_name`](https://pkg.go.dev/github.com/shurcooL/sanitized_anchor_name). It can be useful for clients
that want a small package and don't need full functionality of blackfriday.
Features
--------
All features of Sundown are supported, including:
* **Compatibility**. The Markdown v1.0.3 test suite passes with
the `--tidy` option. Without `--tidy`, the differences are
mostly in whitespace and entity escaping, where blackfriday is
more consistent and cleaner.
* **Common extensions**, including table support, fenced code
blocks, autolinks, strikethroughs, non-strict emphasis, etc.
* **Safety**. Blackfriday is paranoid when parsing, making it safe
to feed untrusted user input without fear of bad things
happening. The test suite stress tests this and there are no
known inputs that make it crash. If you find one, please let me
know and send me the input that does it.
NOTE: "safety" in this context means *runtime safety only*. In order to
protect yourself against JavaScript injection in untrusted content, see
[this example](https://github.com/russross/blackfriday#sanitize-untrusted-content).
* **Fast processing**. It is fast enough to render on-demand in
most web applications without having to cache the output.
* **Thread safety**. You can run multiple parsers in different
goroutines without ill effect. There is no dependence on global
shared state.
* **Minimal dependencies**. Blackfriday only depends on standard
library packages in Go. The source code is pretty
self-contained, so it is easy to add to any project, including
Google App Engine projects.
* **Standards compliant**. Output successfully validates using the
W3C validation tool for HTML 4.01 and XHTML 1.0 Transitional.
Extensions
----------
In addition to the standard markdown syntax, this package
implements the following extensions:
* **Intra-word emphasis supression**. The `_` character is
commonly used inside words when discussing code, so having
markdown interpret it as an emphasis command is usually the
wrong thing. Blackfriday lets you treat all emphasis markers as
normal characters when they occur inside a word.
* **Tables**. Tables can be created by drawing them in the input
using a simple syntax:
```
Name | Age
--------|------
Bob | 27
Alice | 23
```
* **Fenced code blocks**. In addition to the normal 4-space
indentation to mark code blocks, you can explicitly mark them
and supply a language (to make syntax highlighting simple). Just
mark it like this:
```go
func getTrue() bool {
return true
}
```
You can use 3 or more backticks to mark the beginning of the
block, and the same number to mark the end of the block.
To preserve classes of fenced code blocks while using the bluemonday
HTML sanitizer, use the following policy:
```go
p := bluemonday.UGCPolicy()
p.AllowAttrs("class").Matching(regexp.MustCompile("^language-[a-zA-Z0-9]+$")).OnElements("code")
html := p.SanitizeBytes(unsafe)
```
* **Definition lists**. A simple definition list is made of a single-line
term followed by a colon and the definition for that term.
Cat
: Fluffy animal everyone likes
Internet
: Vector of transmission for pictures of cats
Terms must be separated from the previous definition by a blank line.
* **Footnotes**. A marker in the text that will become a superscript number;
a footnote definition that will be placed in a list of footnotes at the
end of the document. A footnote looks like this:
This is a footnote.[^1]
[^1]: the footnote text.
* **Autolinking**. Blackfriday can find URLs that have not been
explicitly marked as links and turn them into links.
* **Strikethrough**. Use two tildes (`~~`) to mark text that
should be crossed out.
* **Hard line breaks**. With this extension enabled (it is off by
default in the `MarkdownBasic` and `MarkdownCommon` convenience
functions), newlines in the input translate into line breaks in
the output.
* **Smart quotes**. Smartypants-style punctuation substitution is
supported, turning normal double- and single-quote marks into
curly quotes, etc.
* **LaTeX-style dash parsing** is an additional option, where `--`
is translated into `&ndash;`, and `---` is translated into
`&mdash;`. This differs from most smartypants processors, which
turn a single hyphen into an ndash and a double hyphen into an
mdash.
* **Smart fractions**, where anything that looks like a fraction
is translated into suitable HTML (instead of just a few special
cases like most smartypant processors). For example, `4/5`
becomes `<sup>4</sup>&frasl;<sub>5</sub>`, which renders as
<sup>4</sup>&frasl;<sub>5</sub>.
Other renderers
---------------
Blackfriday is structured to allow alternative rendering engines. Here
are a few of note:
* [github_flavored_markdown](https://pkg.go.dev/github.com/shurcooL/github_flavored_markdown):
provides a GitHub Flavored Markdown renderer with fenced code block
highlighting, clickable heading anchor links.
It's not customizable, and its goal is to produce HTML output
equivalent to the [GitHub Markdown API endpoint](https://developer.github.com/v3/markdown/#render-a-markdown-document-in-raw-mode),
except the rendering is performed locally.
* [markdownfmt](https://github.com/shurcooL/markdownfmt): like gofmt,
but for markdown.
* [LaTeX output](https://gitlab.com/ambrevar/blackfriday-latex):
renders output as LaTeX.
* [bfchroma](https://github.com/Depado/bfchroma/): provides convenience
integration with the [Chroma](https://github.com/alecthomas/chroma) code
highlighting library. bfchroma is only compatible with v2 of Blackfriday and
provides a drop-in renderer ready to use with Blackfriday, as well as
options and means for further customization.
* [Blackfriday-Confluence](https://github.com/kentaro-m/blackfriday-confluence): provides a [Confluence Wiki Markup](https://confluence.atlassian.com/doc/confluence-wiki-markup-251003035.html) renderer.
* [Blackfriday-Slack](https://github.com/karriereat/blackfriday-slack): converts markdown to slack message style
TODO
----
* More unit testing
* Improve Unicode support. It does not understand all Unicode
rules (about what constitutes a letter, a punctuation symbol,
etc.), so it may fail to detect word boundaries correctly in
some instances. It is safe on all UTF-8 input.
License
-------
[Blackfriday is distributed under the Simplified BSD License](LICENSE.txt)
[1]: https://daringfireball.net/projects/markdown/ "Markdown"
[2]: https://golang.org/ "Go Language"
[3]: https://github.com/vmg/sundown "Sundown"
[4]: https://pkg.go.dev/github.com/russross/blackfriday/v2#Parse "Parse func"
[5]: https://github.com/microcosm-cc/bluemonday "Bluemonday"
[BuildV2SVG]: https://travis-ci.org/russross/blackfriday.svg?branch=v2
[BuildV2URL]: https://travis-ci.org/russross/blackfriday
[PkgGoDevV2SVG]: https://pkg.go.dev/badge/github.com/russross/blackfriday/v2
[PkgGoDevV2URL]: https://pkg.go.dev/github.com/russross/blackfriday/v2

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// Package blackfriday is a Markdown processor.
//
// It translates plain text with simple formatting rules into HTML or LaTeX.
//
// Sanitized Anchor Names
//
// Blackfriday includes an algorithm for creating sanitized anchor names
// corresponding to a given input text. This algorithm is used to create
// anchors for headings when EXTENSION_AUTO_HEADER_IDS is enabled. The
// algorithm is specified below, so that other packages can create
// compatible anchor names and links to those anchors.
//
// The algorithm iterates over the input text, interpreted as UTF-8,
// one Unicode code point (rune) at a time. All runes that are letters (category L)
// or numbers (category N) are considered valid characters. They are mapped to
// lower case, and included in the output. All other runes are considered
// invalid characters. Invalid characters that preceed the first valid character,
// as well as invalid character that follow the last valid character
// are dropped completely. All other sequences of invalid characters
// between two valid characters are replaced with a single dash character '-'.
//
// SanitizedAnchorName exposes this functionality, and can be used to
// create compatible links to the anchor names generated by blackfriday.
// This algorithm is also implemented in a small standalone package at
// github.com/shurcooL/sanitized_anchor_name. It can be useful for clients
// that want a small package and don't need full functionality of blackfriday.
package blackfriday
// NOTE: Keep Sanitized Anchor Name algorithm in sync with package
// github.com/shurcooL/sanitized_anchor_name.
// Otherwise, users of sanitized_anchor_name will get anchor names
// that are incompatible with those generated by blackfriday.

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//
// Blackfriday Markdown Processor
// Available at http://github.com/russross/blackfriday
//
// Copyright © 2011 Russ Ross <russ@russross.com>.
// Distributed under the Simplified BSD License.
// See README.md for details.
//
//
//
// HTML rendering backend
//
//
package blackfriday
import (
"bytes"
"fmt"
"regexp"
"strconv"
"strings"
)
// Html renderer configuration options.
const (
HTML_SKIP_HTML = 1 << iota // skip preformatted HTML blocks
HTML_SKIP_STYLE // skip embedded <style> elements
HTML_SKIP_IMAGES // skip embedded images
HTML_SKIP_LINKS // skip all links
HTML_SAFELINK // only link to trusted protocols
HTML_NOFOLLOW_LINKS // only link with rel="nofollow"
HTML_NOREFERRER_LINKS // only link with rel="noreferrer"
HTML_NOOPENER_LINKS // only link with rel="noopener"
HTML_HREF_TARGET_BLANK // add a blank target
HTML_TOC // generate a table of contents
HTML_OMIT_CONTENTS // skip the main contents (for a standalone table of contents)
HTML_COMPLETE_PAGE // generate a complete HTML page
HTML_USE_XHTML // generate XHTML output instead of HTML
HTML_USE_SMARTYPANTS // enable smart punctuation substitutions
HTML_SMARTYPANTS_FRACTIONS // enable smart fractions (with HTML_USE_SMARTYPANTS)
HTML_SMARTYPANTS_DASHES // enable smart dashes (with HTML_USE_SMARTYPANTS)
HTML_SMARTYPANTS_LATEX_DASHES // enable LaTeX-style dashes (with HTML_USE_SMARTYPANTS and HTML_SMARTYPANTS_DASHES)
HTML_SMARTYPANTS_ANGLED_QUOTES // enable angled double quotes (with HTML_USE_SMARTYPANTS) for double quotes rendering
HTML_SMARTYPANTS_QUOTES_NBSP // enable "French guillemets" (with HTML_USE_SMARTYPANTS)
HTML_FOOTNOTE_RETURN_LINKS // generate a link at the end of a footnote to return to the source
)
var (
alignments = []string{
"left",
"right",
"center",
}
// TODO: improve this regexp to catch all possible entities:
htmlEntity = regexp.MustCompile(`&[a-z]{2,5};`)
)
type HtmlRendererParameters struct {
// Prepend this text to each relative URL.
AbsolutePrefix string
// Add this text to each footnote anchor, to ensure uniqueness.
FootnoteAnchorPrefix string
// Show this text inside the <a> tag for a footnote return link, if the
// HTML_FOOTNOTE_RETURN_LINKS flag is enabled. If blank, the string
// <sup>[return]</sup> is used.
FootnoteReturnLinkContents string
// If set, add this text to the front of each Header ID, to ensure
// uniqueness.
HeaderIDPrefix string
// If set, add this text to the back of each Header ID, to ensure uniqueness.
HeaderIDSuffix string
}
// Html is a type that implements the Renderer interface for HTML output.
//
// Do not create this directly, instead use the HtmlRenderer function.
type Html struct {
flags int // HTML_* options
closeTag string // how to end singleton tags: either " />" or ">"
title string // document title
css string // optional css file url (used with HTML_COMPLETE_PAGE)
parameters HtmlRendererParameters
// table of contents data
tocMarker int
headerCount int
currentLevel int
toc *bytes.Buffer
// Track header IDs to prevent ID collision in a single generation.
headerIDs map[string]int
smartypants *smartypantsRenderer
}
const (
xhtmlClose = " />"
htmlClose = ">"
)
// HtmlRenderer creates and configures an Html object, which
// satisfies the Renderer interface.
//
// flags is a set of HTML_* options ORed together.
// title is the title of the document, and css is a URL for the document's
// stylesheet.
// title and css are only used when HTML_COMPLETE_PAGE is selected.
func HtmlRenderer(flags int, title string, css string) Renderer {
return HtmlRendererWithParameters(flags, title, css, HtmlRendererParameters{})
}
func HtmlRendererWithParameters(flags int, title string,
css string, renderParameters HtmlRendererParameters) Renderer {
// configure the rendering engine
closeTag := htmlClose
if flags&HTML_USE_XHTML != 0 {
closeTag = xhtmlClose
}
if renderParameters.FootnoteReturnLinkContents == "" {
renderParameters.FootnoteReturnLinkContents = `<sup>[return]</sup>`
}
return &Html{
flags: flags,
closeTag: closeTag,
title: title,
css: css,
parameters: renderParameters,
headerCount: 0,
currentLevel: 0,
toc: new(bytes.Buffer),
headerIDs: make(map[string]int),
smartypants: smartypants(flags),
}
}
// Using if statements is a bit faster than a switch statement. As the compiler
// improves, this should be unnecessary this is only worthwhile because
// attrEscape is the single largest CPU user in normal use.
// Also tried using map, but that gave a ~3x slowdown.
func escapeSingleChar(char byte) (string, bool) {
if char == '"' {
return "&quot;", true
}
if char == '&' {
return "&amp;", true
}
if char == '<' {
return "&lt;", true
}
if char == '>' {
return "&gt;", true
}
return "", false
}
func attrEscape(out *bytes.Buffer, src []byte) {
org := 0
for i, ch := range src {
if entity, ok := escapeSingleChar(ch); ok {
if i > org {
// copy all the normal characters since the last escape
out.Write(src[org:i])
}
org = i + 1
out.WriteString(entity)
}
}
if org < len(src) {
out.Write(src[org:])
}
}
func entityEscapeWithSkip(out *bytes.Buffer, src []byte, skipRanges [][]int) {
end := 0
for _, rang := range skipRanges {
attrEscape(out, src[end:rang[0]])
out.Write(src[rang[0]:rang[1]])
end = rang[1]
}
attrEscape(out, src[end:])
}
func (options *Html) GetFlags() int {
return options.flags
}
func (options *Html) TitleBlock(out *bytes.Buffer, text []byte) {
text = bytes.TrimPrefix(text, []byte("% "))
text = bytes.Replace(text, []byte("\n% "), []byte("\n"), -1)
out.WriteString("<h1 class=\"title\">")
out.Write(text)
out.WriteString("\n</h1>")
}
func (options *Html) Header(out *bytes.Buffer, text func() bool, level int, id string) {
marker := out.Len()
doubleSpace(out)
if id == "" && options.flags&HTML_TOC != 0 {
id = fmt.Sprintf("toc_%d", options.headerCount)
}
if id != "" {
id = options.ensureUniqueHeaderID(id)
if options.parameters.HeaderIDPrefix != "" {
id = options.parameters.HeaderIDPrefix + id
}
if options.parameters.HeaderIDSuffix != "" {
id = id + options.parameters.HeaderIDSuffix
}
out.WriteString(fmt.Sprintf("<h%d id=\"%s\">", level, id))
} else {
out.WriteString(fmt.Sprintf("<h%d>", level))
}
tocMarker := out.Len()
if !text() {
out.Truncate(marker)
return
}
// are we building a table of contents?
if options.flags&HTML_TOC != 0 {
options.TocHeaderWithAnchor(out.Bytes()[tocMarker:], level, id)
}
out.WriteString(fmt.Sprintf("</h%d>\n", level))
}
func (options *Html) BlockHtml(out *bytes.Buffer, text []byte) {
if options.flags&HTML_SKIP_HTML != 0 {
return
}
doubleSpace(out)
out.Write(text)
out.WriteByte('\n')
}
func (options *Html) HRule(out *bytes.Buffer) {
doubleSpace(out)
out.WriteString("<hr")
out.WriteString(options.closeTag)
out.WriteByte('\n')
}
func (options *Html) BlockCode(out *bytes.Buffer, text []byte, info string) {
doubleSpace(out)
endOfLang := strings.IndexAny(info, "\t ")
if endOfLang < 0 {
endOfLang = len(info)
}
lang := info[:endOfLang]
if len(lang) == 0 || lang == "." {
out.WriteString("<pre><code>")
} else {
out.WriteString("<pre><code class=\"language-")
attrEscape(out, []byte(lang))
out.WriteString("\">")
}
attrEscape(out, text)
out.WriteString("</code></pre>\n")
}
func (options *Html) BlockQuote(out *bytes.Buffer, text []byte) {
doubleSpace(out)
out.WriteString("<blockquote>\n")
out.Write(text)
out.WriteString("</blockquote>\n")
}
func (options *Html) Table(out *bytes.Buffer, header []byte, body []byte, columnData []int) {
doubleSpace(out)
out.WriteString("<table>\n<thead>\n")
out.Write(header)
out.WriteString("</thead>\n\n<tbody>\n")
out.Write(body)
out.WriteString("</tbody>\n</table>\n")
}
func (options *Html) TableRow(out *bytes.Buffer, text []byte) {
doubleSpace(out)
out.WriteString("<tr>\n")
out.Write(text)
out.WriteString("\n</tr>\n")
}
func (options *Html) TableHeaderCell(out *bytes.Buffer, text []byte, align int) {
doubleSpace(out)
switch align {
case TABLE_ALIGNMENT_LEFT:
out.WriteString("<th align=\"left\">")
case TABLE_ALIGNMENT_RIGHT:
out.WriteString("<th align=\"right\">")
case TABLE_ALIGNMENT_CENTER:
out.WriteString("<th align=\"center\">")
default:
out.WriteString("<th>")
}
out.Write(text)
out.WriteString("</th>")
}
func (options *Html) TableCell(out *bytes.Buffer, text []byte, align int) {
doubleSpace(out)
switch align {
case TABLE_ALIGNMENT_LEFT:
out.WriteString("<td align=\"left\">")
case TABLE_ALIGNMENT_RIGHT:
out.WriteString("<td align=\"right\">")
case TABLE_ALIGNMENT_CENTER:
out.WriteString("<td align=\"center\">")
default:
out.WriteString("<td>")
}
out.Write(text)
out.WriteString("</td>")
}
func (options *Html) Footnotes(out *bytes.Buffer, text func() bool) {
out.WriteString("<div class=\"footnotes\">\n")
options.HRule(out)
options.List(out, text, LIST_TYPE_ORDERED)
out.WriteString("</div>\n")
}
func (options *Html) FootnoteItem(out *bytes.Buffer, name, text []byte, flags int) {
if flags&LIST_ITEM_CONTAINS_BLOCK != 0 || flags&LIST_ITEM_BEGINNING_OF_LIST != 0 {
doubleSpace(out)
}
slug := slugify(name)
out.WriteString(`<li id="`)
out.WriteString(`fn:`)
out.WriteString(options.parameters.FootnoteAnchorPrefix)
out.Write(slug)
out.WriteString(`">`)
out.Write(text)
if options.flags&HTML_FOOTNOTE_RETURN_LINKS != 0 {
out.WriteString(` <a class="footnote-return" href="#`)
out.WriteString(`fnref:`)
out.WriteString(options.parameters.FootnoteAnchorPrefix)
out.Write(slug)
out.WriteString(`">`)
out.WriteString(options.parameters.FootnoteReturnLinkContents)
out.WriteString(`</a>`)
}
out.WriteString("</li>\n")
}
func (options *Html) List(out *bytes.Buffer, text func() bool, flags int) {
marker := out.Len()
doubleSpace(out)
if flags&LIST_TYPE_DEFINITION != 0 {
out.WriteString("<dl>")
} else if flags&LIST_TYPE_ORDERED != 0 {
out.WriteString("<ol>")
} else {
out.WriteString("<ul>")
}
if !text() {
out.Truncate(marker)
return
}
if flags&LIST_TYPE_DEFINITION != 0 {
out.WriteString("</dl>\n")
} else if flags&LIST_TYPE_ORDERED != 0 {
out.WriteString("</ol>\n")
} else {
out.WriteString("</ul>\n")
}
}
func (options *Html) ListItem(out *bytes.Buffer, text []byte, flags int) {
if (flags&LIST_ITEM_CONTAINS_BLOCK != 0 && flags&LIST_TYPE_DEFINITION == 0) ||
flags&LIST_ITEM_BEGINNING_OF_LIST != 0 {
doubleSpace(out)
}
if flags&LIST_TYPE_TERM != 0 {
out.WriteString("<dt>")
} else if flags&LIST_TYPE_DEFINITION != 0 {
out.WriteString("<dd>")
} else {
out.WriteString("<li>")
}
out.Write(text)
if flags&LIST_TYPE_TERM != 0 {
out.WriteString("</dt>\n")
} else if flags&LIST_TYPE_DEFINITION != 0 {
out.WriteString("</dd>\n")
} else {
out.WriteString("</li>\n")
}
}
func (options *Html) Paragraph(out *bytes.Buffer, text func() bool) {
marker := out.Len()
doubleSpace(out)
out.WriteString("<p>")
if !text() {
out.Truncate(marker)
return
}
out.WriteString("</p>\n")
}
func (options *Html) AutoLink(out *bytes.Buffer, link []byte, kind int) {
skipRanges := htmlEntity.FindAllIndex(link, -1)
if options.flags&HTML_SAFELINK != 0 && !isSafeLink(link) && kind != LINK_TYPE_EMAIL {
// mark it but don't link it if it is not a safe link: no smartypants
out.WriteString("<tt>")
entityEscapeWithSkip(out, link, skipRanges)
out.WriteString("</tt>")
return
}
out.WriteString("<a href=\"")
if kind == LINK_TYPE_EMAIL {
out.WriteString("mailto:")
} else {
options.maybeWriteAbsolutePrefix(out, link)
}
entityEscapeWithSkip(out, link, skipRanges)
var relAttrs []string
if options.flags&HTML_NOFOLLOW_LINKS != 0 && !isRelativeLink(link) {
relAttrs = append(relAttrs, "nofollow")
}
if options.flags&HTML_NOREFERRER_LINKS != 0 && !isRelativeLink(link) {
relAttrs = append(relAttrs, "noreferrer")
}
if options.flags&HTML_NOOPENER_LINKS != 0 && !isRelativeLink(link) {
relAttrs = append(relAttrs, "noopener")
}
if len(relAttrs) > 0 {
out.WriteString(fmt.Sprintf("\" rel=\"%s", strings.Join(relAttrs, " ")))
}
// blank target only add to external link
if options.flags&HTML_HREF_TARGET_BLANK != 0 && !isRelativeLink(link) {
out.WriteString("\" target=\"_blank")
}
out.WriteString("\">")
// Pretty print: if we get an email address as
// an actual URI, e.g. `mailto:foo@bar.com`, we don't
// want to print the `mailto:` prefix
switch {
case bytes.HasPrefix(link, []byte("mailto://")):
attrEscape(out, link[len("mailto://"):])
case bytes.HasPrefix(link, []byte("mailto:")):
attrEscape(out, link[len("mailto:"):])
default:
entityEscapeWithSkip(out, link, skipRanges)
}
out.WriteString("</a>")
}
func (options *Html) CodeSpan(out *bytes.Buffer, text []byte) {
out.WriteString("<code>")
attrEscape(out, text)
out.WriteString("</code>")
}
func (options *Html) DoubleEmphasis(out *bytes.Buffer, text []byte) {
out.WriteString("<strong>")
out.Write(text)
out.WriteString("</strong>")
}
func (options *Html) Emphasis(out *bytes.Buffer, text []byte) {
if len(text) == 0 {
return
}
out.WriteString("<em>")
out.Write(text)
out.WriteString("</em>")
}
func (options *Html) maybeWriteAbsolutePrefix(out *bytes.Buffer, link []byte) {
if options.parameters.AbsolutePrefix != "" && isRelativeLink(link) && link[0] != '.' {
out.WriteString(options.parameters.AbsolutePrefix)
if link[0] != '/' {
out.WriteByte('/')
}
}
}
func (options *Html) Image(out *bytes.Buffer, link []byte, title []byte, alt []byte) {
if options.flags&HTML_SKIP_IMAGES != 0 {
return
}
out.WriteString("<img src=\"")
options.maybeWriteAbsolutePrefix(out, link)
attrEscape(out, link)
out.WriteString("\" alt=\"")
if len(alt) > 0 {
attrEscape(out, alt)
}
if len(title) > 0 {
out.WriteString("\" title=\"")
attrEscape(out, title)
}
out.WriteByte('"')
out.WriteString(options.closeTag)
}
func (options *Html) LineBreak(out *bytes.Buffer) {
out.WriteString("<br")
out.WriteString(options.closeTag)
out.WriteByte('\n')
}
func (options *Html) Link(out *bytes.Buffer, link []byte, title []byte, content []byte) {
if options.flags&HTML_SKIP_LINKS != 0 {
// write the link text out but don't link it, just mark it with typewriter font
out.WriteString("<tt>")
attrEscape(out, content)
out.WriteString("</tt>")
return
}
if options.flags&HTML_SAFELINK != 0 && !isSafeLink(link) {
// write the link text out but don't link it, just mark it with typewriter font
out.WriteString("<tt>")
attrEscape(out, content)
out.WriteString("</tt>")
return
}
out.WriteString("<a href=\"")
options.maybeWriteAbsolutePrefix(out, link)
attrEscape(out, link)
if len(title) > 0 {
out.WriteString("\" title=\"")
attrEscape(out, title)
}
var relAttrs []string
if options.flags&HTML_NOFOLLOW_LINKS != 0 && !isRelativeLink(link) {
relAttrs = append(relAttrs, "nofollow")
}
if options.flags&HTML_NOREFERRER_LINKS != 0 && !isRelativeLink(link) {
relAttrs = append(relAttrs, "noreferrer")
}
if options.flags&HTML_NOOPENER_LINKS != 0 && !isRelativeLink(link) {
relAttrs = append(relAttrs, "noopener")
}
if len(relAttrs) > 0 {
out.WriteString(fmt.Sprintf("\" rel=\"%s", strings.Join(relAttrs, " ")))
}
// blank target only add to external link
if options.flags&HTML_HREF_TARGET_BLANK != 0 && !isRelativeLink(link) {
out.WriteString("\" target=\"_blank")
}
out.WriteString("\">")
out.Write(content)
out.WriteString("</a>")
return
}
func (options *Html) RawHtmlTag(out *bytes.Buffer, text []byte) {
if options.flags&HTML_SKIP_HTML != 0 {
return
}
if options.flags&HTML_SKIP_STYLE != 0 && isHtmlTag(text, "style") {
return
}
if options.flags&HTML_SKIP_LINKS != 0 && isHtmlTag(text, "a") {
return
}
if options.flags&HTML_SKIP_IMAGES != 0 && isHtmlTag(text, "img") {
return
}
out.Write(text)
}
func (options *Html) TripleEmphasis(out *bytes.Buffer, text []byte) {
out.WriteString("<strong><em>")
out.Write(text)
out.WriteString("</em></strong>")
}
func (options *Html) StrikeThrough(out *bytes.Buffer, text []byte) {
out.WriteString("<del>")
out.Write(text)
out.WriteString("</del>")
}
func (options *Html) FootnoteRef(out *bytes.Buffer, ref []byte, id int) {
slug := slugify(ref)
out.WriteString(`<sup class="footnote-ref" id="`)
out.WriteString(`fnref:`)
out.WriteString(options.parameters.FootnoteAnchorPrefix)
out.Write(slug)
out.WriteString(`"><a href="#`)
out.WriteString(`fn:`)
out.WriteString(options.parameters.FootnoteAnchorPrefix)
out.Write(slug)
out.WriteString(`">`)
out.WriteString(strconv.Itoa(id))
out.WriteString(`</a></sup>`)
}
func (options *Html) Entity(out *bytes.Buffer, entity []byte) {
out.Write(entity)
}
func (options *Html) NormalText(out *bytes.Buffer, text []byte) {
if options.flags&HTML_USE_SMARTYPANTS != 0 {
options.Smartypants(out, text)
} else {
attrEscape(out, text)
}
}
func (options *Html) Smartypants(out *bytes.Buffer, text []byte) {
smrt := smartypantsData{false, false}
// first do normal entity escaping
var escaped bytes.Buffer
attrEscape(&escaped, text)
text = escaped.Bytes()
mark := 0
for i := 0; i < len(text); i++ {
if action := options.smartypants[text[i]]; action != nil {
if i > mark {
out.Write(text[mark:i])
}
previousChar := byte(0)
if i > 0 {
previousChar = text[i-1]
}
i += action(out, &smrt, previousChar, text[i:])
mark = i + 1
}
}
if mark < len(text) {
out.Write(text[mark:])
}
}
func (options *Html) DocumentHeader(out *bytes.Buffer) {
if options.flags&HTML_COMPLETE_PAGE == 0 {
return
}
ending := ""
if options.flags&HTML_USE_XHTML != 0 {
out.WriteString("<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Transitional//EN\" ")
out.WriteString("\"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd\">\n")
out.WriteString("<html xmlns=\"http://www.w3.org/1999/xhtml\">\n")
ending = " /"
} else {
out.WriteString("<!DOCTYPE html>\n")
out.WriteString("<html>\n")
}
out.WriteString("<head>\n")
out.WriteString(" <title>")
options.NormalText(out, []byte(options.title))
out.WriteString("</title>\n")
out.WriteString(" <meta name=\"GENERATOR\" content=\"Blackfriday Markdown Processor v")
out.WriteString(VERSION)
out.WriteString("\"")
out.WriteString(ending)
out.WriteString(">\n")
out.WriteString(" <meta charset=\"utf-8\"")
out.WriteString(ending)
out.WriteString(">\n")
if options.css != "" {
out.WriteString(" <link rel=\"stylesheet\" type=\"text/css\" href=\"")
attrEscape(out, []byte(options.css))
out.WriteString("\"")
out.WriteString(ending)
out.WriteString(">\n")
}
out.WriteString("</head>\n")
out.WriteString("<body>\n")
options.tocMarker = out.Len()
}
func (options *Html) DocumentFooter(out *bytes.Buffer) {
// finalize and insert the table of contents
if options.flags&HTML_TOC != 0 {
options.TocFinalize()
// now we have to insert the table of contents into the document
var temp bytes.Buffer
// start by making a copy of everything after the document header
temp.Write(out.Bytes()[options.tocMarker:])
// now clear the copied material from the main output buffer
out.Truncate(options.tocMarker)
// corner case spacing issue
if options.flags&HTML_COMPLETE_PAGE != 0 {
out.WriteByte('\n')
}
// insert the table of contents
out.WriteString("<nav>\n")
out.Write(options.toc.Bytes())
out.WriteString("</nav>\n")
// corner case spacing issue
if options.flags&HTML_COMPLETE_PAGE == 0 && options.flags&HTML_OMIT_CONTENTS == 0 {
out.WriteByte('\n')
}
// write out everything that came after it
if options.flags&HTML_OMIT_CONTENTS == 0 {
out.Write(temp.Bytes())
}
}
if options.flags&HTML_COMPLETE_PAGE != 0 {
out.WriteString("\n</body>\n")
out.WriteString("</html>\n")
}
}
func (options *Html) TocHeaderWithAnchor(text []byte, level int, anchor string) {
for level > options.currentLevel {
switch {
case bytes.HasSuffix(options.toc.Bytes(), []byte("</li>\n")):
// this sublist can nest underneath a header
size := options.toc.Len()
options.toc.Truncate(size - len("</li>\n"))
case options.currentLevel > 0:
options.toc.WriteString("<li>")
}
if options.toc.Len() > 0 {
options.toc.WriteByte('\n')
}
options.toc.WriteString("<ul>\n")
options.currentLevel++
}
for level < options.currentLevel {
options.toc.WriteString("</ul>")
if options.currentLevel > 1 {
options.toc.WriteString("</li>\n")
}
options.currentLevel--
}
options.toc.WriteString("<li><a href=\"#")
if anchor != "" {
options.toc.WriteString(anchor)
} else {
options.toc.WriteString("toc_")
options.toc.WriteString(strconv.Itoa(options.headerCount))
}
options.toc.WriteString("\">")
options.headerCount++
options.toc.Write(text)
options.toc.WriteString("</a></li>\n")
}
func (options *Html) TocHeader(text []byte, level int) {
options.TocHeaderWithAnchor(text, level, "")
}
func (options *Html) TocFinalize() {
for options.currentLevel > 1 {
options.toc.WriteString("</ul></li>\n")
options.currentLevel--
}
if options.currentLevel > 0 {
options.toc.WriteString("</ul>\n")
}
}
func isHtmlTag(tag []byte, tagname string) bool {
found, _ := findHtmlTagPos(tag, tagname)
return found
}
// Look for a character, but ignore it when it's in any kind of quotes, it
// might be JavaScript
func skipUntilCharIgnoreQuotes(html []byte, start int, char byte) int {
inSingleQuote := false
inDoubleQuote := false
inGraveQuote := false
i := start
for i < len(html) {
switch {
case html[i] == char && !inSingleQuote && !inDoubleQuote && !inGraveQuote:
return i
case html[i] == '\'':
inSingleQuote = !inSingleQuote
case html[i] == '"':
inDoubleQuote = !inDoubleQuote
case html[i] == '`':
inGraveQuote = !inGraveQuote
}
i++
}
return start
}
func findHtmlTagPos(tag []byte, tagname string) (bool, int) {
i := 0
if i < len(tag) && tag[0] != '<' {
return false, -1
}
i++
i = skipSpace(tag, i)
if i < len(tag) && tag[i] == '/' {
i++
}
i = skipSpace(tag, i)
j := 0
for ; i < len(tag); i, j = i+1, j+1 {
if j >= len(tagname) {
break
}
if strings.ToLower(string(tag[i]))[0] != tagname[j] {
return false, -1
}
}
if i == len(tag) {
return false, -1
}
rightAngle := skipUntilCharIgnoreQuotes(tag, i, '>')
if rightAngle > i {
return true, rightAngle
}
return false, -1
}
func skipUntilChar(text []byte, start int, char byte) int {
i := start
for i < len(text) && text[i] != char {
i++
}
return i
}
func skipSpace(tag []byte, i int) int {
for i < len(tag) && isspace(tag[i]) {
i++
}
return i
}
func skipChar(data []byte, start int, char byte) int {
i := start
for i < len(data) && data[i] == char {
i++
}
return i
}
func doubleSpace(out *bytes.Buffer) {
if out.Len() > 0 {
out.WriteByte('\n')
}
}
func isRelativeLink(link []byte) (yes bool) {
// a tag begin with '#'
if link[0] == '#' {
return true
}
// link begin with '/' but not '//', the second maybe a protocol relative link
if len(link) >= 2 && link[0] == '/' && link[1] != '/' {
return true
}
// only the root '/'
if len(link) == 1 && link[0] == '/' {
return true
}
// current directory : begin with "./"
if bytes.HasPrefix(link, []byte("./")) {
return true
}
// parent directory : begin with "../"
if bytes.HasPrefix(link, []byte("../")) {
return true
}
return false
}
func (options *Html) ensureUniqueHeaderID(id string) string {
for count, found := options.headerIDs[id]; found; count, found = options.headerIDs[id] {
tmp := fmt.Sprintf("%s-%d", id, count+1)
if _, tmpFound := options.headerIDs[tmp]; !tmpFound {
options.headerIDs[id] = count + 1
id = tmp
} else {
id = id + "-1"
}
}
if _, found := options.headerIDs[id]; !found {
options.headerIDs[id] = 0
}
return id
}

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//
// Blackfriday Markdown Processor
// Available at http://github.com/russross/blackfriday
//
// Copyright © 2011 Russ Ross <russ@russross.com>.
// Distributed under the Simplified BSD License.
// See README.md for details.
//
//
//
// LaTeX rendering backend
//
//
package blackfriday
import (
"bytes"
"strings"
)
// Latex is a type that implements the Renderer interface for LaTeX output.
//
// Do not create this directly, instead use the LatexRenderer function.
type Latex struct {
}
// LatexRenderer creates and configures a Latex object, which
// satisfies the Renderer interface.
//
// flags is a set of LATEX_* options ORed together (currently no such options
// are defined).
func LatexRenderer(flags int) Renderer {
return &Latex{}
}
func (options *Latex) GetFlags() int {
return 0
}
// render code chunks using verbatim, or listings if we have a language
func (options *Latex) BlockCode(out *bytes.Buffer, text []byte, info string) {
if info == "" {
out.WriteString("\n\\begin{verbatim}\n")
} else {
lang := strings.Fields(info)[0]
out.WriteString("\n\\begin{lstlisting}[language=")
out.WriteString(lang)
out.WriteString("]\n")
}
out.Write(text)
if info == "" {
out.WriteString("\n\\end{verbatim}\n")
} else {
out.WriteString("\n\\end{lstlisting}\n")
}
}
func (options *Latex) TitleBlock(out *bytes.Buffer, text []byte) {
}
func (options *Latex) BlockQuote(out *bytes.Buffer, text []byte) {
out.WriteString("\n\\begin{quotation}\n")
out.Write(text)
out.WriteString("\n\\end{quotation}\n")
}
func (options *Latex) BlockHtml(out *bytes.Buffer, text []byte) {
// a pretty lame thing to do...
out.WriteString("\n\\begin{verbatim}\n")
out.Write(text)
out.WriteString("\n\\end{verbatim}\n")
}
func (options *Latex) Header(out *bytes.Buffer, text func() bool, level int, id string) {
marker := out.Len()
switch level {
case 1:
out.WriteString("\n\\section{")
case 2:
out.WriteString("\n\\subsection{")
case 3:
out.WriteString("\n\\subsubsection{")
case 4:
out.WriteString("\n\\paragraph{")
case 5:
out.WriteString("\n\\subparagraph{")
case 6:
out.WriteString("\n\\textbf{")
}
if !text() {
out.Truncate(marker)
return
}
out.WriteString("}\n")
}
func (options *Latex) HRule(out *bytes.Buffer) {
out.WriteString("\n\\HRule\n")
}
func (options *Latex) List(out *bytes.Buffer, text func() bool, flags int) {
marker := out.Len()
if flags&LIST_TYPE_ORDERED != 0 {
out.WriteString("\n\\begin{enumerate}\n")
} else {
out.WriteString("\n\\begin{itemize}\n")
}
if !text() {
out.Truncate(marker)
return
}
if flags&LIST_TYPE_ORDERED != 0 {
out.WriteString("\n\\end{enumerate}\n")
} else {
out.WriteString("\n\\end{itemize}\n")
}
}
func (options *Latex) ListItem(out *bytes.Buffer, text []byte, flags int) {
out.WriteString("\n\\item ")
out.Write(text)
}
func (options *Latex) Paragraph(out *bytes.Buffer, text func() bool) {
marker := out.Len()
out.WriteString("\n")
if !text() {
out.Truncate(marker)
return
}
out.WriteString("\n")
}
func (options *Latex) Table(out *bytes.Buffer, header []byte, body []byte, columnData []int) {
out.WriteString("\n\\begin{tabular}{")
for _, elt := range columnData {
switch elt {
case TABLE_ALIGNMENT_LEFT:
out.WriteByte('l')
case TABLE_ALIGNMENT_RIGHT:
out.WriteByte('r')
default:
out.WriteByte('c')
}
}
out.WriteString("}\n")
out.Write(header)
out.WriteString(" \\\\\n\\hline\n")
out.Write(body)
out.WriteString("\n\\end{tabular}\n")
}
func (options *Latex) TableRow(out *bytes.Buffer, text []byte) {
if out.Len() > 0 {
out.WriteString(" \\\\\n")
}
out.Write(text)
}
func (options *Latex) TableHeaderCell(out *bytes.Buffer, text []byte, align int) {
if out.Len() > 0 {
out.WriteString(" & ")
}
out.Write(text)
}
func (options *Latex) TableCell(out *bytes.Buffer, text []byte, align int) {
if out.Len() > 0 {
out.WriteString(" & ")
}
out.Write(text)
}
// TODO: this
func (options *Latex) Footnotes(out *bytes.Buffer, text func() bool) {
}
func (options *Latex) FootnoteItem(out *bytes.Buffer, name, text []byte, flags int) {
}
func (options *Latex) AutoLink(out *bytes.Buffer, link []byte, kind int) {
out.WriteString("\\href{")
if kind == LINK_TYPE_EMAIL {
out.WriteString("mailto:")
}
out.Write(link)
out.WriteString("}{")
out.Write(link)
out.WriteString("}")
}
func (options *Latex) CodeSpan(out *bytes.Buffer, text []byte) {
out.WriteString("\\texttt{")
escapeSpecialChars(out, text)
out.WriteString("}")
}
func (options *Latex) DoubleEmphasis(out *bytes.Buffer, text []byte) {
out.WriteString("\\textbf{")
out.Write(text)
out.WriteString("}")
}
func (options *Latex) Emphasis(out *bytes.Buffer, text []byte) {
out.WriteString("\\textit{")
out.Write(text)
out.WriteString("}")
}
func (options *Latex) Image(out *bytes.Buffer, link []byte, title []byte, alt []byte) {
if bytes.HasPrefix(link, []byte("http://")) || bytes.HasPrefix(link, []byte("https://")) {
// treat it like a link
out.WriteString("\\href{")
out.Write(link)
out.WriteString("}{")
out.Write(alt)
out.WriteString("}")
} else {
out.WriteString("\\includegraphics{")
out.Write(link)
out.WriteString("}")
}
}
func (options *Latex) LineBreak(out *bytes.Buffer) {
out.WriteString(" \\\\\n")
}
func (options *Latex) Link(out *bytes.Buffer, link []byte, title []byte, content []byte) {
out.WriteString("\\href{")
out.Write(link)
out.WriteString("}{")
out.Write(content)
out.WriteString("}")
}
func (options *Latex) RawHtmlTag(out *bytes.Buffer, tag []byte) {
}
func (options *Latex) TripleEmphasis(out *bytes.Buffer, text []byte) {
out.WriteString("\\textbf{\\textit{")
out.Write(text)
out.WriteString("}}")
}
func (options *Latex) StrikeThrough(out *bytes.Buffer, text []byte) {
out.WriteString("\\sout{")
out.Write(text)
out.WriteString("}")
}
// TODO: this
func (options *Latex) FootnoteRef(out *bytes.Buffer, ref []byte, id int) {
}
func needsBackslash(c byte) bool {
for _, r := range []byte("_{}%$&\\~#") {
if c == r {
return true
}
}
return false
}
func escapeSpecialChars(out *bytes.Buffer, text []byte) {
for i := 0; i < len(text); i++ {
// directly copy normal characters
org := i
for i < len(text) && !needsBackslash(text[i]) {
i++
}
if i > org {
out.Write(text[org:i])
}
// escape a character
if i >= len(text) {
break
}
out.WriteByte('\\')
out.WriteByte(text[i])
}
}
func (options *Latex) Entity(out *bytes.Buffer, entity []byte) {
// TODO: convert this into a unicode character or something
out.Write(entity)
}
func (options *Latex) NormalText(out *bytes.Buffer, text []byte) {
escapeSpecialChars(out, text)
}
// header and footer
func (options *Latex) DocumentHeader(out *bytes.Buffer) {
out.WriteString("\\documentclass{article}\n")
out.WriteString("\n")
out.WriteString("\\usepackage{graphicx}\n")
out.WriteString("\\usepackage{listings}\n")
out.WriteString("\\usepackage[margin=1in]{geometry}\n")
out.WriteString("\\usepackage[utf8]{inputenc}\n")
out.WriteString("\\usepackage{verbatim}\n")
out.WriteString("\\usepackage[normalem]{ulem}\n")
out.WriteString("\\usepackage{hyperref}\n")
out.WriteString("\n")
out.WriteString("\\hypersetup{colorlinks,%\n")
out.WriteString(" citecolor=black,%\n")
out.WriteString(" filecolor=black,%\n")
out.WriteString(" linkcolor=black,%\n")
out.WriteString(" urlcolor=black,%\n")
out.WriteString(" pdfstartview=FitH,%\n")
out.WriteString(" breaklinks=true,%\n")
out.WriteString(" pdfauthor={Blackfriday Markdown Processor v")
out.WriteString(VERSION)
out.WriteString("}}\n")
out.WriteString("\n")
out.WriteString("\\newcommand{\\HRule}{\\rule{\\linewidth}{0.5mm}}\n")
out.WriteString("\\addtolength{\\parskip}{0.5\\baselineskip}\n")
out.WriteString("\\parindent=0pt\n")
out.WriteString("\n")
out.WriteString("\\begin{document}\n")
}
func (options *Latex) DocumentFooter(out *bytes.Buffer) {
out.WriteString("\n\\end{document}\n")
}

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//
// Blackfriday Markdown Processor
// Available at http://github.com/russross/blackfriday
//
// Copyright © 2011 Russ Ross <russ@russross.com>.
// Distributed under the Simplified BSD License.
// See README.md for details.
//
//
//
// Markdown parsing and processing
//
//
package blackfriday
import (
"bytes"
"fmt"
"strings"
"unicode/utf8"
)
const VERSION = "1.5"
// These are the supported markdown parsing extensions.
// OR these values together to select multiple extensions.
const (
EXTENSION_NO_INTRA_EMPHASIS = 1 << iota // ignore emphasis markers inside words
EXTENSION_TABLES // render tables
EXTENSION_FENCED_CODE // render fenced code blocks
EXTENSION_AUTOLINK // detect embedded URLs that are not explicitly marked
EXTENSION_STRIKETHROUGH // strikethrough text using ~~test~~
EXTENSION_LAX_HTML_BLOCKS // loosen up HTML block parsing rules
EXTENSION_SPACE_HEADERS // be strict about prefix header rules
EXTENSION_HARD_LINE_BREAK // translate newlines into line breaks
EXTENSION_TAB_SIZE_EIGHT // expand tabs to eight spaces instead of four
EXTENSION_FOOTNOTES // Pandoc-style footnotes
EXTENSION_NO_EMPTY_LINE_BEFORE_BLOCK // No need to insert an empty line to start a (code, quote, ordered list, unordered list) block
EXTENSION_HEADER_IDS // specify header IDs with {#id}
EXTENSION_TITLEBLOCK // Titleblock ala pandoc
EXTENSION_AUTO_HEADER_IDS // Create the header ID from the text
EXTENSION_BACKSLASH_LINE_BREAK // translate trailing backslashes into line breaks
EXTENSION_DEFINITION_LISTS // render definition lists
EXTENSION_JOIN_LINES // delete newline and join lines
commonHtmlFlags = 0 |
HTML_USE_XHTML |
HTML_USE_SMARTYPANTS |
HTML_SMARTYPANTS_FRACTIONS |
HTML_SMARTYPANTS_DASHES |
HTML_SMARTYPANTS_LATEX_DASHES
commonExtensions = 0 |
EXTENSION_NO_INTRA_EMPHASIS |
EXTENSION_TABLES |
EXTENSION_FENCED_CODE |
EXTENSION_AUTOLINK |
EXTENSION_STRIKETHROUGH |
EXTENSION_SPACE_HEADERS |
EXTENSION_HEADER_IDS |
EXTENSION_BACKSLASH_LINE_BREAK |
EXTENSION_DEFINITION_LISTS
)
// These are the possible flag values for the link renderer.
// Only a single one of these values will be used; they are not ORed together.
// These are mostly of interest if you are writing a new output format.
const (
LINK_TYPE_NOT_AUTOLINK = iota
LINK_TYPE_NORMAL
LINK_TYPE_EMAIL
)
// These are the possible flag values for the ListItem renderer.
// Multiple flag values may be ORed together.
// These are mostly of interest if you are writing a new output format.
const (
LIST_TYPE_ORDERED = 1 << iota
LIST_TYPE_DEFINITION
LIST_TYPE_TERM
LIST_ITEM_CONTAINS_BLOCK
LIST_ITEM_BEGINNING_OF_LIST
LIST_ITEM_END_OF_LIST
)
// These are the possible flag values for the table cell renderer.
// Only a single one of these values will be used; they are not ORed together.
// These are mostly of interest if you are writing a new output format.
const (
TABLE_ALIGNMENT_LEFT = 1 << iota
TABLE_ALIGNMENT_RIGHT
TABLE_ALIGNMENT_CENTER = (TABLE_ALIGNMENT_LEFT | TABLE_ALIGNMENT_RIGHT)
)
// The size of a tab stop.
const (
TAB_SIZE_DEFAULT = 4
TAB_SIZE_EIGHT = 8
)
// blockTags is a set of tags that are recognized as HTML block tags.
// Any of these can be included in markdown text without special escaping.
var blockTags = map[string]struct{}{
"blockquote": {},
"del": {},
"div": {},
"dl": {},
"fieldset": {},
"form": {},
"h1": {},
"h2": {},
"h3": {},
"h4": {},
"h5": {},
"h6": {},
"iframe": {},
"ins": {},
"math": {},
"noscript": {},
"ol": {},
"pre": {},
"p": {},
"script": {},
"style": {},
"table": {},
"ul": {},
// HTML5
"address": {},
"article": {},
"aside": {},
"canvas": {},
"details": {},
"figcaption": {},
"figure": {},
"footer": {},
"header": {},
"hgroup": {},
"main": {},
"nav": {},
"output": {},
"progress": {},
"section": {},
"summary": {},
"video": {},
}
// Renderer is the rendering interface.
// This is mostly of interest if you are implementing a new rendering format.
//
// When a byte slice is provided, it contains the (rendered) contents of the
// element.
//
// When a callback is provided instead, it will write the contents of the
// respective element directly to the output buffer and return true on success.
// If the callback returns false, the rendering function should reset the
// output buffer as though it had never been called.
//
// Currently Html and Latex implementations are provided
type Renderer interface {
// block-level callbacks
BlockCode(out *bytes.Buffer, text []byte, infoString string)
BlockQuote(out *bytes.Buffer, text []byte)
BlockHtml(out *bytes.Buffer, text []byte)
Header(out *bytes.Buffer, text func() bool, level int, id string)
HRule(out *bytes.Buffer)
List(out *bytes.Buffer, text func() bool, flags int)
ListItem(out *bytes.Buffer, text []byte, flags int)
Paragraph(out *bytes.Buffer, text func() bool)
Table(out *bytes.Buffer, header []byte, body []byte, columnData []int)
TableRow(out *bytes.Buffer, text []byte)
TableHeaderCell(out *bytes.Buffer, text []byte, flags int)
TableCell(out *bytes.Buffer, text []byte, flags int)
Footnotes(out *bytes.Buffer, text func() bool)
FootnoteItem(out *bytes.Buffer, name, text []byte, flags int)
TitleBlock(out *bytes.Buffer, text []byte)
// Span-level callbacks
AutoLink(out *bytes.Buffer, link []byte, kind int)
CodeSpan(out *bytes.Buffer, text []byte)
DoubleEmphasis(out *bytes.Buffer, text []byte)
Emphasis(out *bytes.Buffer, text []byte)
Image(out *bytes.Buffer, link []byte, title []byte, alt []byte)
LineBreak(out *bytes.Buffer)
Link(out *bytes.Buffer, link []byte, title []byte, content []byte)
RawHtmlTag(out *bytes.Buffer, tag []byte)
TripleEmphasis(out *bytes.Buffer, text []byte)
StrikeThrough(out *bytes.Buffer, text []byte)
FootnoteRef(out *bytes.Buffer, ref []byte, id int)
// Low-level callbacks
Entity(out *bytes.Buffer, entity []byte)
NormalText(out *bytes.Buffer, text []byte)
// Header and footer
DocumentHeader(out *bytes.Buffer)
DocumentFooter(out *bytes.Buffer)
GetFlags() int
}
// Callback functions for inline parsing. One such function is defined
// for each character that triggers a response when parsing inline data.
type inlineParser func(p *parser, out *bytes.Buffer, data []byte, offset int) int
// Parser holds runtime state used by the parser.
// This is constructed by the Markdown function.
type parser struct {
r Renderer
refOverride ReferenceOverrideFunc
refs map[string]*reference
inlineCallback [256]inlineParser
flags int
nesting int
maxNesting int
insideLink bool
// Footnotes need to be ordered as well as available to quickly check for
// presence. If a ref is also a footnote, it's stored both in refs and here
// in notes. Slice is nil if footnotes not enabled.
notes []*reference
notesRecord map[string]struct{}
}
func (p *parser) getRef(refid string) (ref *reference, found bool) {
if p.refOverride != nil {
r, overridden := p.refOverride(refid)
if overridden {
if r == nil {
return nil, false
}
return &reference{
link: []byte(r.Link),
title: []byte(r.Title),
noteId: 0,
hasBlock: false,
text: []byte(r.Text)}, true
}
}
// refs are case insensitive
ref, found = p.refs[strings.ToLower(refid)]
return ref, found
}
func (p *parser) isFootnote(ref *reference) bool {
_, ok := p.notesRecord[string(ref.link)]
return ok
}
//
//
// Public interface
//
//
// Reference represents the details of a link.
// See the documentation in Options for more details on use-case.
type Reference struct {
// Link is usually the URL the reference points to.
Link string
// Title is the alternate text describing the link in more detail.
Title string
// Text is the optional text to override the ref with if the syntax used was
// [refid][]
Text string
}
// ReferenceOverrideFunc is expected to be called with a reference string and
// return either a valid Reference type that the reference string maps to or
// nil. If overridden is false, the default reference logic will be executed.
// See the documentation in Options for more details on use-case.
type ReferenceOverrideFunc func(reference string) (ref *Reference, overridden bool)
// Options represents configurable overrides and callbacks (in addition to the
// extension flag set) for configuring a Markdown parse.
type Options struct {
// Extensions is a flag set of bit-wise ORed extension bits. See the
// EXTENSION_* flags defined in this package.
Extensions int
// ReferenceOverride is an optional function callback that is called every
// time a reference is resolved.
//
// In Markdown, the link reference syntax can be made to resolve a link to
// a reference instead of an inline URL, in one of the following ways:
//
// * [link text][refid]
// * [refid][]
//
// Usually, the refid is defined at the bottom of the Markdown document. If
// this override function is provided, the refid is passed to the override
// function first, before consulting the defined refids at the bottom. If
// the override function indicates an override did not occur, the refids at
// the bottom will be used to fill in the link details.
ReferenceOverride ReferenceOverrideFunc
}
// MarkdownBasic is a convenience function for simple rendering.
// It processes markdown input with no extensions enabled.
func MarkdownBasic(input []byte) []byte {
// set up the HTML renderer
htmlFlags := HTML_USE_XHTML
renderer := HtmlRenderer(htmlFlags, "", "")
// set up the parser
return MarkdownOptions(input, renderer, Options{Extensions: 0})
}
// Call Markdown with most useful extensions enabled
// MarkdownCommon is a convenience function for simple rendering.
// It processes markdown input with common extensions enabled, including:
//
// * Smartypants processing with smart fractions and LaTeX dashes
//
// * Intra-word emphasis suppression
//
// * Tables
//
// * Fenced code blocks
//
// * Autolinking
//
// * Strikethrough support
//
// * Strict header parsing
//
// * Custom Header IDs
func MarkdownCommon(input []byte) []byte {
// set up the HTML renderer
renderer := HtmlRenderer(commonHtmlFlags, "", "")
return MarkdownOptions(input, renderer, Options{
Extensions: commonExtensions})
}
// Markdown is the main rendering function.
// It parses and renders a block of markdown-encoded text.
// The supplied Renderer is used to format the output, and extensions dictates
// which non-standard extensions are enabled.
//
// To use the supplied Html or LaTeX renderers, see HtmlRenderer and
// LatexRenderer, respectively.
func Markdown(input []byte, renderer Renderer, extensions int) []byte {
return MarkdownOptions(input, renderer, Options{
Extensions: extensions})
}
// MarkdownOptions is just like Markdown but takes additional options through
// the Options struct.
func MarkdownOptions(input []byte, renderer Renderer, opts Options) []byte {
// no point in parsing if we can't render
if renderer == nil {
return nil
}
extensions := opts.Extensions
// fill in the render structure
p := new(parser)
p.r = renderer
p.flags = extensions
p.refOverride = opts.ReferenceOverride
p.refs = make(map[string]*reference)
p.maxNesting = 16
p.insideLink = false
// register inline parsers
p.inlineCallback['*'] = emphasis
p.inlineCallback['_'] = emphasis
if extensions&EXTENSION_STRIKETHROUGH != 0 {
p.inlineCallback['~'] = emphasis
}
p.inlineCallback['`'] = codeSpan
p.inlineCallback['\n'] = lineBreak
p.inlineCallback['['] = link
p.inlineCallback['<'] = leftAngle
p.inlineCallback['\\'] = escape
p.inlineCallback['&'] = entity
if extensions&EXTENSION_AUTOLINK != 0 {
p.inlineCallback[':'] = autoLink
}
if extensions&EXTENSION_FOOTNOTES != 0 {
p.notes = make([]*reference, 0)
p.notesRecord = make(map[string]struct{})
}
first := firstPass(p, input)
second := secondPass(p, first)
return second
}
// first pass:
// - normalize newlines
// - extract references (outside of fenced code blocks)
// - expand tabs (outside of fenced code blocks)
// - copy everything else
func firstPass(p *parser, input []byte) []byte {
var out bytes.Buffer
tabSize := TAB_SIZE_DEFAULT
if p.flags&EXTENSION_TAB_SIZE_EIGHT != 0 {
tabSize = TAB_SIZE_EIGHT
}
beg := 0
lastFencedCodeBlockEnd := 0
for beg < len(input) {
// Find end of this line, then process the line.
end := beg
for end < len(input) && input[end] != '\n' && input[end] != '\r' {
end++
}
if p.flags&EXTENSION_FENCED_CODE != 0 {
// track fenced code block boundaries to suppress tab expansion
// and reference extraction inside them:
if beg >= lastFencedCodeBlockEnd {
if i := p.fencedCodeBlock(&out, input[beg:], false); i > 0 {
lastFencedCodeBlockEnd = beg + i
}
}
}
// add the line body if present
if end > beg {
if end < lastFencedCodeBlockEnd { // Do not expand tabs while inside fenced code blocks.
out.Write(input[beg:end])
} else if refEnd := isReference(p, input[beg:], tabSize); refEnd > 0 {
beg += refEnd
continue
} else {
expandTabs(&out, input[beg:end], tabSize)
}
}
if end < len(input) && input[end] == '\r' {
end++
}
if end < len(input) && input[end] == '\n' {
end++
}
out.WriteByte('\n')
beg = end
}
// empty input?
if out.Len() == 0 {
out.WriteByte('\n')
}
return out.Bytes()
}
// second pass: actual rendering
func secondPass(p *parser, input []byte) []byte {
var output bytes.Buffer
p.r.DocumentHeader(&output)
p.block(&output, input)
if p.flags&EXTENSION_FOOTNOTES != 0 && len(p.notes) > 0 {
p.r.Footnotes(&output, func() bool {
flags := LIST_ITEM_BEGINNING_OF_LIST
for i := 0; i < len(p.notes); i += 1 {
ref := p.notes[i]
var buf bytes.Buffer
if ref.hasBlock {
flags |= LIST_ITEM_CONTAINS_BLOCK
p.block(&buf, ref.title)
} else {
p.inline(&buf, ref.title)
}
p.r.FootnoteItem(&output, ref.link, buf.Bytes(), flags)
flags &^= LIST_ITEM_BEGINNING_OF_LIST | LIST_ITEM_CONTAINS_BLOCK
}
return true
})
}
p.r.DocumentFooter(&output)
if p.nesting != 0 {
panic("Nesting level did not end at zero")
}
return output.Bytes()
}
//
// Link references
//
// This section implements support for references that (usually) appear
// as footnotes in a document, and can be referenced anywhere in the document.
// The basic format is:
//
// [1]: http://www.google.com/ "Google"
// [2]: http://www.github.com/ "Github"
//
// Anywhere in the document, the reference can be linked by referring to its
// label, i.e., 1 and 2 in this example, as in:
//
// This library is hosted on [Github][2], a git hosting site.
//
// Actual footnotes as specified in Pandoc and supported by some other Markdown
// libraries such as php-markdown are also taken care of. They look like this:
//
// This sentence needs a bit of further explanation.[^note]
//
// [^note]: This is the explanation.
//
// Footnotes should be placed at the end of the document in an ordered list.
// Inline footnotes such as:
//
// Inline footnotes^[Not supported.] also exist.
//
// are not yet supported.
// References are parsed and stored in this struct.
type reference struct {
link []byte
title []byte
noteId int // 0 if not a footnote ref
hasBlock bool
text []byte
}
func (r *reference) String() string {
return fmt.Sprintf("{link: %q, title: %q, text: %q, noteId: %d, hasBlock: %v}",
r.link, r.title, r.text, r.noteId, r.hasBlock)
}
// Check whether or not data starts with a reference link.
// If so, it is parsed and stored in the list of references
// (in the render struct).
// Returns the number of bytes to skip to move past it,
// or zero if the first line is not a reference.
func isReference(p *parser, data []byte, tabSize int) int {
// up to 3 optional leading spaces
if len(data) < 4 {
return 0
}
i := 0
for i < 3 && data[i] == ' ' {
i++
}
noteId := 0
// id part: anything but a newline between brackets
if data[i] != '[' {
return 0
}
i++
if p.flags&EXTENSION_FOOTNOTES != 0 {
if i < len(data) && data[i] == '^' {
// we can set it to anything here because the proper noteIds will
// be assigned later during the second pass. It just has to be != 0
noteId = 1
i++
}
}
idOffset := i
for i < len(data) && data[i] != '\n' && data[i] != '\r' && data[i] != ']' {
i++
}
if i >= len(data) || data[i] != ']' {
return 0
}
idEnd := i
// spacer: colon (space | tab)* newline? (space | tab)*
i++
if i >= len(data) || data[i] != ':' {
return 0
}
i++
for i < len(data) && (data[i] == ' ' || data[i] == '\t') {
i++
}
if i < len(data) && (data[i] == '\n' || data[i] == '\r') {
i++
if i < len(data) && data[i] == '\n' && data[i-1] == '\r' {
i++
}
}
for i < len(data) && (data[i] == ' ' || data[i] == '\t') {
i++
}
if i >= len(data) {
return 0
}
var (
linkOffset, linkEnd int
titleOffset, titleEnd int
lineEnd int
raw []byte
hasBlock bool
)
if p.flags&EXTENSION_FOOTNOTES != 0 && noteId != 0 {
linkOffset, linkEnd, raw, hasBlock = scanFootnote(p, data, i, tabSize)
lineEnd = linkEnd
} else {
linkOffset, linkEnd, titleOffset, titleEnd, lineEnd = scanLinkRef(p, data, i)
}
if lineEnd == 0 {
return 0
}
// a valid ref has been found
ref := &reference{
noteId: noteId,
hasBlock: hasBlock,
}
if noteId > 0 {
// reusing the link field for the id since footnotes don't have links
ref.link = data[idOffset:idEnd]
// if footnote, it's not really a title, it's the contained text
ref.title = raw
} else {
ref.link = data[linkOffset:linkEnd]
ref.title = data[titleOffset:titleEnd]
}
// id matches are case-insensitive
id := string(bytes.ToLower(data[idOffset:idEnd]))
p.refs[id] = ref
return lineEnd
}
func scanLinkRef(p *parser, data []byte, i int) (linkOffset, linkEnd, titleOffset, titleEnd, lineEnd int) {
// link: whitespace-free sequence, optionally between angle brackets
if data[i] == '<' {
i++
}
linkOffset = i
if i == len(data) {
return
}
for i < len(data) && data[i] != ' ' && data[i] != '\t' && data[i] != '\n' && data[i] != '\r' {
i++
}
linkEnd = i
if data[linkOffset] == '<' && data[linkEnd-1] == '>' {
linkOffset++
linkEnd--
}
// optional spacer: (space | tab)* (newline | '\'' | '"' | '(' )
for i < len(data) && (data[i] == ' ' || data[i] == '\t') {
i++
}
if i < len(data) && data[i] != '\n' && data[i] != '\r' && data[i] != '\'' && data[i] != '"' && data[i] != '(' {
return
}
// compute end-of-line
if i >= len(data) || data[i] == '\r' || data[i] == '\n' {
lineEnd = i
}
if i+1 < len(data) && data[i] == '\r' && data[i+1] == '\n' {
lineEnd++
}
// optional (space|tab)* spacer after a newline
if lineEnd > 0 {
i = lineEnd + 1
for i < len(data) && (data[i] == ' ' || data[i] == '\t') {
i++
}
}
// optional title: any non-newline sequence enclosed in '"() alone on its line
if i+1 < len(data) && (data[i] == '\'' || data[i] == '"' || data[i] == '(') {
i++
titleOffset = i
// look for EOL
for i < len(data) && data[i] != '\n' && data[i] != '\r' {
i++
}
if i+1 < len(data) && data[i] == '\n' && data[i+1] == '\r' {
titleEnd = i + 1
} else {
titleEnd = i
}
// step back
i--
for i > titleOffset && (data[i] == ' ' || data[i] == '\t') {
i--
}
if i > titleOffset && (data[i] == '\'' || data[i] == '"' || data[i] == ')') {
lineEnd = titleEnd
titleEnd = i
}
}
return
}
// The first bit of this logic is the same as (*parser).listItem, but the rest
// is much simpler. This function simply finds the entire block and shifts it
// over by one tab if it is indeed a block (just returns the line if it's not).
// blockEnd is the end of the section in the input buffer, and contents is the
// extracted text that was shifted over one tab. It will need to be rendered at
// the end of the document.
func scanFootnote(p *parser, data []byte, i, indentSize int) (blockStart, blockEnd int, contents []byte, hasBlock bool) {
if i == 0 || len(data) == 0 {
return
}
// skip leading whitespace on first line
for i < len(data) && data[i] == ' ' {
i++
}
blockStart = i
// find the end of the line
blockEnd = i
for i < len(data) && data[i-1] != '\n' {
i++
}
// get working buffer
var raw bytes.Buffer
// put the first line into the working buffer
raw.Write(data[blockEnd:i])
blockEnd = i
// process the following lines
containsBlankLine := false
gatherLines:
for blockEnd < len(data) {
i++
// find the end of this line
for i < len(data) && data[i-1] != '\n' {
i++
}
// if it is an empty line, guess that it is part of this item
// and move on to the next line
if p.isEmpty(data[blockEnd:i]) > 0 {
containsBlankLine = true
blockEnd = i
continue
}
n := 0
if n = isIndented(data[blockEnd:i], indentSize); n == 0 {
// this is the end of the block.
// we don't want to include this last line in the index.
break gatherLines
}
// if there were blank lines before this one, insert a new one now
if containsBlankLine {
raw.WriteByte('\n')
containsBlankLine = false
}
// get rid of that first tab, write to buffer
raw.Write(data[blockEnd+n : i])
hasBlock = true
blockEnd = i
}
if data[blockEnd-1] != '\n' {
raw.WriteByte('\n')
}
contents = raw.Bytes()
return
}
//
//
// Miscellaneous helper functions
//
//
// Test if a character is a punctuation symbol.
// Taken from a private function in regexp in the stdlib.
func ispunct(c byte) bool {
for _, r := range []byte("!\"#$%&'()*+,-./:;<=>?@[\\]^_`{|}~") {
if c == r {
return true
}
}
return false
}
// Test if a character is a whitespace character.
func isspace(c byte) bool {
return ishorizontalspace(c) || isverticalspace(c)
}
// Test if a character is a horizontal whitespace character.
func ishorizontalspace(c byte) bool {
return c == ' ' || c == '\t'
}
// Test if a character is a vertical whitespace character.
func isverticalspace(c byte) bool {
return c == '\n' || c == '\r' || c == '\f' || c == '\v'
}
// Test if a character is letter.
func isletter(c byte) bool {
return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z')
}
// Test if a character is a letter or a digit.
// TODO: check when this is looking for ASCII alnum and when it should use unicode
func isalnum(c byte) bool {
return (c >= '0' && c <= '9') || isletter(c)
}
// Replace tab characters with spaces, aligning to the next TAB_SIZE column.
// always ends output with a newline
func expandTabs(out *bytes.Buffer, line []byte, tabSize int) {
// first, check for common cases: no tabs, or only tabs at beginning of line
i, prefix := 0, 0
slowcase := false
for i = 0; i < len(line); i++ {
if line[i] == '\t' {
if prefix == i {
prefix++
} else {
slowcase = true
break
}
}
}
// no need to decode runes if all tabs are at the beginning of the line
if !slowcase {
for i = 0; i < prefix*tabSize; i++ {
out.WriteByte(' ')
}
out.Write(line[prefix:])
return
}
// the slow case: we need to count runes to figure out how
// many spaces to insert for each tab
column := 0
i = 0
for i < len(line) {
start := i
for i < len(line) && line[i] != '\t' {
_, size := utf8.DecodeRune(line[i:])
i += size
column++
}
if i > start {
out.Write(line[start:i])
}
if i >= len(line) {
break
}
for {
out.WriteByte(' ')
column++
if column%tabSize == 0 {
break
}
}
i++
}
}
// Find if a line counts as indented or not.
// Returns number of characters the indent is (0 = not indented).
func isIndented(data []byte, indentSize int) int {
if len(data) == 0 {
return 0
}
if data[0] == '\t' {
return 1
}
if len(data) < indentSize {
return 0
}
for i := 0; i < indentSize; i++ {
if data[i] != ' ' {
return 0
}
}
return indentSize
}
// Create a url-safe slug for fragments
func slugify(in []byte) []byte {
if len(in) == 0 {
return in
}
out := make([]byte, 0, len(in))
sym := false
for _, ch := range in {
if isalnum(ch) {
sym = false
out = append(out, ch)
} else if sym {
continue
} else {
out = append(out, '-')
sym = true
}
}
var a, b int
var ch byte
for a, ch = range out {
if ch != '-' {
break
}
}
for b = len(out) - 1; b > 0; b-- {
if out[b] != '-' {
break
}
}
return out[a : b+1]
}

430
tests/vendor/github.com/russross/blackfriday/smartypants.go generated vendored Normal file
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//
// Blackfriday Markdown Processor
// Available at http://github.com/russross/blackfriday
//
// Copyright © 2011 Russ Ross <russ@russross.com>.
// Distributed under the Simplified BSD License.
// See README.md for details.
//
//
//
// SmartyPants rendering
//
//
package blackfriday
import (
"bytes"
)
type smartypantsData struct {
inSingleQuote bool
inDoubleQuote bool
}
func wordBoundary(c byte) bool {
return c == 0 || isspace(c) || ispunct(c)
}
func tolower(c byte) byte {
if c >= 'A' && c <= 'Z' {
return c - 'A' + 'a'
}
return c
}
func isdigit(c byte) bool {
return c >= '0' && c <= '9'
}
func smartQuoteHelper(out *bytes.Buffer, previousChar byte, nextChar byte, quote byte, isOpen *bool, addNBSP bool) bool {
// edge of the buffer is likely to be a tag that we don't get to see,
// so we treat it like text sometimes
// enumerate all sixteen possibilities for (previousChar, nextChar)
// each can be one of {0, space, punct, other}
switch {
case previousChar == 0 && nextChar == 0:
// context is not any help here, so toggle
*isOpen = !*isOpen
case isspace(previousChar) && nextChar == 0:
// [ "] might be [ "<code>foo...]
*isOpen = true
case ispunct(previousChar) && nextChar == 0:
// [!"] hmm... could be [Run!"] or [("<code>...]
*isOpen = false
case /* isnormal(previousChar) && */ nextChar == 0:
// [a"] is probably a close
*isOpen = false
case previousChar == 0 && isspace(nextChar):
// [" ] might be [...foo</code>" ]
*isOpen = false
case isspace(previousChar) && isspace(nextChar):
// [ " ] context is not any help here, so toggle
*isOpen = !*isOpen
case ispunct(previousChar) && isspace(nextChar):
// [!" ] is probably a close
*isOpen = false
case /* isnormal(previousChar) && */ isspace(nextChar):
// [a" ] this is one of the easy cases
*isOpen = false
case previousChar == 0 && ispunct(nextChar):
// ["!] hmm... could be ["$1.95] or [</code>"!...]
*isOpen = false
case isspace(previousChar) && ispunct(nextChar):
// [ "!] looks more like [ "$1.95]
*isOpen = true
case ispunct(previousChar) && ispunct(nextChar):
// [!"!] context is not any help here, so toggle
*isOpen = !*isOpen
case /* isnormal(previousChar) && */ ispunct(nextChar):
// [a"!] is probably a close
*isOpen = false
case previousChar == 0 /* && isnormal(nextChar) */ :
// ["a] is probably an open
*isOpen = true
case isspace(previousChar) /* && isnormal(nextChar) */ :
// [ "a] this is one of the easy cases
*isOpen = true
case ispunct(previousChar) /* && isnormal(nextChar) */ :
// [!"a] is probably an open
*isOpen = true
default:
// [a'b] maybe a contraction?
*isOpen = false
}
// Note that with the limited lookahead, this non-breaking
// space will also be appended to single double quotes.
if addNBSP && !*isOpen {
out.WriteString("&nbsp;")
}
out.WriteByte('&')
if *isOpen {
out.WriteByte('l')
} else {
out.WriteByte('r')
}
out.WriteByte(quote)
out.WriteString("quo;")
if addNBSP && *isOpen {
out.WriteString("&nbsp;")
}
return true
}
func smartSingleQuote(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, text []byte) int {
if len(text) >= 2 {
t1 := tolower(text[1])
if t1 == '\'' {
nextChar := byte(0)
if len(text) >= 3 {
nextChar = text[2]
}
if smartQuoteHelper(out, previousChar, nextChar, 'd', &smrt.inDoubleQuote, false) {
return 1
}
}
if (t1 == 's' || t1 == 't' || t1 == 'm' || t1 == 'd') && (len(text) < 3 || wordBoundary(text[2])) {
out.WriteString("&rsquo;")
return 0
}
if len(text) >= 3 {
t2 := tolower(text[2])
if ((t1 == 'r' && t2 == 'e') || (t1 == 'l' && t2 == 'l') || (t1 == 'v' && t2 == 'e')) &&
(len(text) < 4 || wordBoundary(text[3])) {
out.WriteString("&rsquo;")
return 0
}
}
}
nextChar := byte(0)
if len(text) > 1 {
nextChar = text[1]
}
if smartQuoteHelper(out, previousChar, nextChar, 's', &smrt.inSingleQuote, false) {
return 0
}
out.WriteByte(text[0])
return 0
}
func smartParens(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, text []byte) int {
if len(text) >= 3 {
t1 := tolower(text[1])
t2 := tolower(text[2])
if t1 == 'c' && t2 == ')' {
out.WriteString("&copy;")
return 2
}
if t1 == 'r' && t2 == ')' {
out.WriteString("&reg;")
return 2
}
if len(text) >= 4 && t1 == 't' && t2 == 'm' && text[3] == ')' {
out.WriteString("&trade;")
return 3
}
}
out.WriteByte(text[0])
return 0
}
func smartDash(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, text []byte) int {
if len(text) >= 2 {
if text[1] == '-' {
out.WriteString("&mdash;")
return 1
}
if wordBoundary(previousChar) && wordBoundary(text[1]) {
out.WriteString("&ndash;")
return 0
}
}
out.WriteByte(text[0])
return 0
}
func smartDashLatex(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, text []byte) int {
if len(text) >= 3 && text[1] == '-' && text[2] == '-' {
out.WriteString("&mdash;")
return 2
}
if len(text) >= 2 && text[1] == '-' {
out.WriteString("&ndash;")
return 1
}
out.WriteByte(text[0])
return 0
}
func smartAmpVariant(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, text []byte, quote byte, addNBSP bool) int {
if bytes.HasPrefix(text, []byte("&quot;")) {
nextChar := byte(0)
if len(text) >= 7 {
nextChar = text[6]
}
if smartQuoteHelper(out, previousChar, nextChar, quote, &smrt.inDoubleQuote, addNBSP) {
return 5
}
}
if bytes.HasPrefix(text, []byte("&#0;")) {
return 3
}
out.WriteByte('&')
return 0
}
func smartAmp(angledQuotes, addNBSP bool) func(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, text []byte) int {
var quote byte = 'd'
if angledQuotes {
quote = 'a'
}
return func(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, text []byte) int {
return smartAmpVariant(out, smrt, previousChar, text, quote, addNBSP)
}
}
func smartPeriod(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, text []byte) int {
if len(text) >= 3 && text[1] == '.' && text[2] == '.' {
out.WriteString("&hellip;")
return 2
}
if len(text) >= 5 && text[1] == ' ' && text[2] == '.' && text[3] == ' ' && text[4] == '.' {
out.WriteString("&hellip;")
return 4
}
out.WriteByte(text[0])
return 0
}
func smartBacktick(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, text []byte) int {
if len(text) >= 2 && text[1] == '`' {
nextChar := byte(0)
if len(text) >= 3 {
nextChar = text[2]
}
if smartQuoteHelper(out, previousChar, nextChar, 'd', &smrt.inDoubleQuote, false) {
return 1
}
}
out.WriteByte(text[0])
return 0
}
func smartNumberGeneric(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, text []byte) int {
if wordBoundary(previousChar) && previousChar != '/' && len(text) >= 3 {
// is it of the form digits/digits(word boundary)?, i.e., \d+/\d+\b
// note: check for regular slash (/) or fraction slash (⁄, 0x2044, or 0xe2 81 84 in utf-8)
// and avoid changing dates like 1/23/2005 into fractions.
numEnd := 0
for len(text) > numEnd && isdigit(text[numEnd]) {
numEnd++
}
if numEnd == 0 {
out.WriteByte(text[0])
return 0
}
denStart := numEnd + 1
if len(text) > numEnd+3 && text[numEnd] == 0xe2 && text[numEnd+1] == 0x81 && text[numEnd+2] == 0x84 {
denStart = numEnd + 3
} else if len(text) < numEnd+2 || text[numEnd] != '/' {
out.WriteByte(text[0])
return 0
}
denEnd := denStart
for len(text) > denEnd && isdigit(text[denEnd]) {
denEnd++
}
if denEnd == denStart {
out.WriteByte(text[0])
return 0
}
if len(text) == denEnd || wordBoundary(text[denEnd]) && text[denEnd] != '/' {
out.WriteString("<sup>")
out.Write(text[:numEnd])
out.WriteString("</sup>&frasl;<sub>")
out.Write(text[denStart:denEnd])
out.WriteString("</sub>")
return denEnd - 1
}
}
out.WriteByte(text[0])
return 0
}
func smartNumber(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, text []byte) int {
if wordBoundary(previousChar) && previousChar != '/' && len(text) >= 3 {
if text[0] == '1' && text[1] == '/' && text[2] == '2' {
if len(text) < 4 || wordBoundary(text[3]) && text[3] != '/' {
out.WriteString("&frac12;")
return 2
}
}
if text[0] == '1' && text[1] == '/' && text[2] == '4' {
if len(text) < 4 || wordBoundary(text[3]) && text[3] != '/' || (len(text) >= 5 && tolower(text[3]) == 't' && tolower(text[4]) == 'h') {
out.WriteString("&frac14;")
return 2
}
}
if text[0] == '3' && text[1] == '/' && text[2] == '4' {
if len(text) < 4 || wordBoundary(text[3]) && text[3] != '/' || (len(text) >= 6 && tolower(text[3]) == 't' && tolower(text[4]) == 'h' && tolower(text[5]) == 's') {
out.WriteString("&frac34;")
return 2
}
}
}
out.WriteByte(text[0])
return 0
}
func smartDoubleQuoteVariant(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, text []byte, quote byte) int {
nextChar := byte(0)
if len(text) > 1 {
nextChar = text[1]
}
if !smartQuoteHelper(out, previousChar, nextChar, quote, &smrt.inDoubleQuote, false) {
out.WriteString("&quot;")
}
return 0
}
func smartDoubleQuote(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, text []byte) int {
return smartDoubleQuoteVariant(out, smrt, previousChar, text, 'd')
}
func smartAngledDoubleQuote(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, text []byte) int {
return smartDoubleQuoteVariant(out, smrt, previousChar, text, 'a')
}
func smartLeftAngle(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, text []byte) int {
i := 0
for i < len(text) && text[i] != '>' {
i++
}
out.Write(text[:i+1])
return i
}
type smartCallback func(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, text []byte) int
type smartypantsRenderer [256]smartCallback
var (
smartAmpAngled = smartAmp(true, false)
smartAmpAngledNBSP = smartAmp(true, true)
smartAmpRegular = smartAmp(false, false)
smartAmpRegularNBSP = smartAmp(false, true)
)
func smartypants(flags int) *smartypantsRenderer {
r := new(smartypantsRenderer)
addNBSP := flags&HTML_SMARTYPANTS_QUOTES_NBSP != 0
if flags&HTML_SMARTYPANTS_ANGLED_QUOTES == 0 {
r['"'] = smartDoubleQuote
if !addNBSP {
r['&'] = smartAmpRegular
} else {
r['&'] = smartAmpRegularNBSP
}
} else {
r['"'] = smartAngledDoubleQuote
if !addNBSP {
r['&'] = smartAmpAngled
} else {
r['&'] = smartAmpAngledNBSP
}
}
r['\''] = smartSingleQuote
r['('] = smartParens
if flags&HTML_SMARTYPANTS_DASHES != 0 {
if flags&HTML_SMARTYPANTS_LATEX_DASHES == 0 {
r['-'] = smartDash
} else {
r['-'] = smartDashLatex
}
}
r['.'] = smartPeriod
if flags&HTML_SMARTYPANTS_FRACTIONS == 0 {
r['1'] = smartNumber
r['3'] = smartNumber
} else {
for ch := '1'; ch <= '9'; ch++ {
r[ch] = smartNumberGeneric
}
}
r['<'] = smartLeftAngle
r['`'] = smartBacktick
return r
}

8
tests/vendor/github.com/russross/blackfriday/v2/.gitignore generated vendored Normal file
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*.out
*.swp
*.8
*.6
_obj
_test*
markdown
tags

17
tests/vendor/github.com/russross/blackfriday/v2/.travis.yml generated vendored Normal file
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sudo: false
language: go
go:
- "1.10.x"
- "1.11.x"
- tip
matrix:
fast_finish: true
allow_failures:
- go: tip
install:
- # Do nothing. This is needed to prevent default install action "go get -t -v ./..." from happening here (we want it to happen inside script step).
script:
- go get -t -v ./...
- diff -u <(echo -n) <(gofmt -d -s .)
- go tool vet .
- go test -v ./...

29
tests/vendor/github.com/russross/blackfriday/v2/LICENSE.txt generated vendored Normal file
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Blackfriday is distributed under the Simplified BSD License:
> Copyright © 2011 Russ Ross
> All rights reserved.
>
> Redistribution and use in source and binary forms, with or without
> modification, are permitted provided that the following conditions
> are met:
>
> 1. Redistributions of source code must retain the above copyright
> notice, this list of conditions and the following disclaimer.
>
> 2. Redistributions in binary form must reproduce the above
> copyright notice, this list of conditions and the following
> disclaimer in the documentation and/or other materials provided with
> the distribution.
>
> THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
> "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
> LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
> FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
> COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
> INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
> BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
> LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
> CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
> LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
> ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
> POSSIBILITY OF SUCH DAMAGE.

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Blackfriday
[![Build Status][BuildV2SVG]][BuildV2URL]
[![PkgGoDev][PkgGoDevV2SVG]][PkgGoDevV2URL]
===========
Blackfriday is a [Markdown][1] processor implemented in [Go][2]. It
is paranoid about its input (so you can safely feed it user-supplied
data), it is fast, it supports common extensions (tables, smart
punctuation substitutions, etc.), and it is safe for all utf-8
(unicode) input.
HTML output is currently supported, along with Smartypants
extensions.
It started as a translation from C of [Sundown][3].
Installation
------------
Blackfriday is compatible with modern Go releases in module mode.
With Go installed:
go get github.com/russross/blackfriday/v2
will resolve and add the package to the current development module,
then build and install it. Alternatively, you can achieve the same
if you import it in a package:
import "github.com/russross/blackfriday/v2"
and `go get` without parameters.
Legacy GOPATH mode is unsupported.
Versions
--------
Currently maintained and recommended version of Blackfriday is `v2`. It's being
developed on its own branch: https://github.com/russross/blackfriday/tree/v2 and the
documentation is available at
https://pkg.go.dev/github.com/russross/blackfriday/v2.
It is `go get`-able in module mode at `github.com/russross/blackfriday/v2`.
Version 2 offers a number of improvements over v1:
* Cleaned up API
* A separate call to [`Parse`][4], which produces an abstract syntax tree for
the document
* Latest bug fixes
* Flexibility to easily add your own rendering extensions
Potential drawbacks:
* Our benchmarks show v2 to be slightly slower than v1. Currently in the
ballpark of around 15%.
* API breakage. If you can't afford modifying your code to adhere to the new API
and don't care too much about the new features, v2 is probably not for you.
* Several bug fixes are trailing behind and still need to be forward-ported to
v2. See issue [#348](https://github.com/russross/blackfriday/issues/348) for
tracking.
If you are still interested in the legacy `v1`, you can import it from
`github.com/russross/blackfriday`. Documentation for the legacy v1 can be found
here: https://pkg.go.dev/github.com/russross/blackfriday.
Usage
-----
For the most sensible markdown processing, it is as simple as getting your input
into a byte slice and calling:
```go
output := blackfriday.Run(input)
```
Your input will be parsed and the output rendered with a set of most popular
extensions enabled. If you want the most basic feature set, corresponding with
the bare Markdown specification, use:
```go
output := blackfriday.Run(input, blackfriday.WithNoExtensions())
```
### Sanitize untrusted content
Blackfriday itself does nothing to protect against malicious content. If you are
dealing with user-supplied markdown, we recommend running Blackfriday's output
through HTML sanitizer such as [Bluemonday][5].
Here's an example of simple usage of Blackfriday together with Bluemonday:
```go
import (
"github.com/microcosm-cc/bluemonday"
"github.com/russross/blackfriday/v2"
)
// ...
unsafe := blackfriday.Run(input)
html := bluemonday.UGCPolicy().SanitizeBytes(unsafe)
```
### Custom options
If you want to customize the set of options, use `blackfriday.WithExtensions`,
`blackfriday.WithRenderer` and `blackfriday.WithRefOverride`.
### `blackfriday-tool`
You can also check out `blackfriday-tool` for a more complete example
of how to use it. Download and install it using:
go get github.com/russross/blackfriday-tool
This is a simple command-line tool that allows you to process a
markdown file using a standalone program. You can also browse the
source directly on github if you are just looking for some example
code:
* <https://github.com/russross/blackfriday-tool>
Note that if you have not already done so, installing
`blackfriday-tool` will be sufficient to download and install
blackfriday in addition to the tool itself. The tool binary will be
installed in `$GOPATH/bin`. This is a statically-linked binary that
can be copied to wherever you need it without worrying about
dependencies and library versions.
### Sanitized anchor names
Blackfriday includes an algorithm for creating sanitized anchor names
corresponding to a given input text. This algorithm is used to create
anchors for headings when `AutoHeadingIDs` extension is enabled. The
algorithm has a specification, so that other packages can create
compatible anchor names and links to those anchors.
The specification is located at https://pkg.go.dev/github.com/russross/blackfriday/v2#hdr-Sanitized_Anchor_Names.
[`SanitizedAnchorName`](https://pkg.go.dev/github.com/russross/blackfriday/v2#SanitizedAnchorName) exposes this functionality, and can be used to
create compatible links to the anchor names generated by blackfriday.
This algorithm is also implemented in a small standalone package at
[`github.com/shurcooL/sanitized_anchor_name`](https://pkg.go.dev/github.com/shurcooL/sanitized_anchor_name). It can be useful for clients
that want a small package and don't need full functionality of blackfriday.
Features
--------
All features of Sundown are supported, including:
* **Compatibility**. The Markdown v1.0.3 test suite passes with
the `--tidy` option. Without `--tidy`, the differences are
mostly in whitespace and entity escaping, where blackfriday is
more consistent and cleaner.
* **Common extensions**, including table support, fenced code
blocks, autolinks, strikethroughs, non-strict emphasis, etc.
* **Safety**. Blackfriday is paranoid when parsing, making it safe
to feed untrusted user input without fear of bad things
happening. The test suite stress tests this and there are no
known inputs that make it crash. If you find one, please let me
know and send me the input that does it.
NOTE: "safety" in this context means *runtime safety only*. In order to
protect yourself against JavaScript injection in untrusted content, see
[this example](https://github.com/russross/blackfriday#sanitize-untrusted-content).
* **Fast processing**. It is fast enough to render on-demand in
most web applications without having to cache the output.
* **Thread safety**. You can run multiple parsers in different
goroutines without ill effect. There is no dependence on global
shared state.
* **Minimal dependencies**. Blackfriday only depends on standard
library packages in Go. The source code is pretty
self-contained, so it is easy to add to any project, including
Google App Engine projects.
* **Standards compliant**. Output successfully validates using the
W3C validation tool for HTML 4.01 and XHTML 1.0 Transitional.
Extensions
----------
In addition to the standard markdown syntax, this package
implements the following extensions:
* **Intra-word emphasis supression**. The `_` character is
commonly used inside words when discussing code, so having
markdown interpret it as an emphasis command is usually the
wrong thing. Blackfriday lets you treat all emphasis markers as
normal characters when they occur inside a word.
* **Tables**. Tables can be created by drawing them in the input
using a simple syntax:
```
Name | Age
--------|------
Bob | 27
Alice | 23
```
* **Fenced code blocks**. In addition to the normal 4-space
indentation to mark code blocks, you can explicitly mark them
and supply a language (to make syntax highlighting simple). Just
mark it like this:
```go
func getTrue() bool {
return true
}
```
You can use 3 or more backticks to mark the beginning of the
block, and the same number to mark the end of the block.
To preserve classes of fenced code blocks while using the bluemonday
HTML sanitizer, use the following policy:
```go
p := bluemonday.UGCPolicy()
p.AllowAttrs("class").Matching(regexp.MustCompile("^language-[a-zA-Z0-9]+$")).OnElements("code")
html := p.SanitizeBytes(unsafe)
```
* **Definition lists**. A simple definition list is made of a single-line
term followed by a colon and the definition for that term.
Cat
: Fluffy animal everyone likes
Internet
: Vector of transmission for pictures of cats
Terms must be separated from the previous definition by a blank line.
* **Footnotes**. A marker in the text that will become a superscript number;
a footnote definition that will be placed in a list of footnotes at the
end of the document. A footnote looks like this:
This is a footnote.[^1]
[^1]: the footnote text.
* **Autolinking**. Blackfriday can find URLs that have not been
explicitly marked as links and turn them into links.
* **Strikethrough**. Use two tildes (`~~`) to mark text that
should be crossed out.
* **Hard line breaks**. With this extension enabled newlines in the input
translate into line breaks in the output. This extension is off by default.
* **Smart quotes**. Smartypants-style punctuation substitution is
supported, turning normal double- and single-quote marks into
curly quotes, etc.
* **LaTeX-style dash parsing** is an additional option, where `--`
is translated into `&ndash;`, and `---` is translated into
`&mdash;`. This differs from most smartypants processors, which
turn a single hyphen into an ndash and a double hyphen into an
mdash.
* **Smart fractions**, where anything that looks like a fraction
is translated into suitable HTML (instead of just a few special
cases like most smartypant processors). For example, `4/5`
becomes `<sup>4</sup>&frasl;<sub>5</sub>`, which renders as
<sup>4</sup>&frasl;<sub>5</sub>.
Other renderers
---------------
Blackfriday is structured to allow alternative rendering engines. Here
are a few of note:
* [github_flavored_markdown](https://pkg.go.dev/github.com/shurcooL/github_flavored_markdown):
provides a GitHub Flavored Markdown renderer with fenced code block
highlighting, clickable heading anchor links.
It's not customizable, and its goal is to produce HTML output
equivalent to the [GitHub Markdown API endpoint](https://developer.github.com/v3/markdown/#render-a-markdown-document-in-raw-mode),
except the rendering is performed locally.
* [markdownfmt](https://github.com/shurcooL/markdownfmt): like gofmt,
but for markdown.
* [LaTeX output](https://gitlab.com/ambrevar/blackfriday-latex):
renders output as LaTeX.
* [bfchroma](https://github.com/Depado/bfchroma/): provides convenience
integration with the [Chroma](https://github.com/alecthomas/chroma) code
highlighting library. bfchroma is only compatible with v2 of Blackfriday and
provides a drop-in renderer ready to use with Blackfriday, as well as
options and means for further customization.
* [Blackfriday-Confluence](https://github.com/kentaro-m/blackfriday-confluence): provides a [Confluence Wiki Markup](https://confluence.atlassian.com/doc/confluence-wiki-markup-251003035.html) renderer.
* [Blackfriday-Slack](https://github.com/karriereat/blackfriday-slack): converts markdown to slack message style
TODO
----
* More unit testing
* Improve Unicode support. It does not understand all Unicode
rules (about what constitutes a letter, a punctuation symbol,
etc.), so it may fail to detect word boundaries correctly in
some instances. It is safe on all UTF-8 input.
License
-------
[Blackfriday is distributed under the Simplified BSD License](LICENSE.txt)
[1]: https://daringfireball.net/projects/markdown/ "Markdown"
[2]: https://golang.org/ "Go Language"
[3]: https://github.com/vmg/sundown "Sundown"
[4]: https://pkg.go.dev/github.com/russross/blackfriday/v2#Parse "Parse func"
[5]: https://github.com/microcosm-cc/bluemonday "Bluemonday"
[BuildV2SVG]: https://travis-ci.org/russross/blackfriday.svg?branch=v2
[BuildV2URL]: https://travis-ci.org/russross/blackfriday
[PkgGoDevV2SVG]: https://pkg.go.dev/badge/github.com/russross/blackfriday/v2
[PkgGoDevV2URL]: https://pkg.go.dev/github.com/russross/blackfriday/v2

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// Package blackfriday is a markdown processor.
//
// It translates plain text with simple formatting rules into an AST, which can
// then be further processed to HTML (provided by Blackfriday itself) or other
// formats (provided by the community).
//
// The simplest way to invoke Blackfriday is to call the Run function. It will
// take a text input and produce a text output in HTML (or other format).
//
// A slightly more sophisticated way to use Blackfriday is to create a Markdown
// processor and to call Parse, which returns a syntax tree for the input
// document. You can leverage Blackfriday's parsing for content extraction from
// markdown documents. You can assign a custom renderer and set various options
// to the Markdown processor.
//
// If you're interested in calling Blackfriday from command line, see
// https://github.com/russross/blackfriday-tool.
//
// Sanitized Anchor Names
//
// Blackfriday includes an algorithm for creating sanitized anchor names
// corresponding to a given input text. This algorithm is used to create
// anchors for headings when AutoHeadingIDs extension is enabled. The
// algorithm is specified below, so that other packages can create
// compatible anchor names and links to those anchors.
//
// The algorithm iterates over the input text, interpreted as UTF-8,
// one Unicode code point (rune) at a time. All runes that are letters (category L)
// or numbers (category N) are considered valid characters. They are mapped to
// lower case, and included in the output. All other runes are considered
// invalid characters. Invalid characters that precede the first valid character,
// as well as invalid character that follow the last valid character
// are dropped completely. All other sequences of invalid characters
// between two valid characters are replaced with a single dash character '-'.
//
// SanitizedAnchorName exposes this functionality, and can be used to
// create compatible links to the anchor names generated by blackfriday.
// This algorithm is also implemented in a small standalone package at
// github.com/shurcooL/sanitized_anchor_name. It can be useful for clients
// that want a small package and don't need full functionality of blackfriday.
package blackfriday
// NOTE: Keep Sanitized Anchor Name algorithm in sync with package
// github.com/shurcooL/sanitized_anchor_name.
// Otherwise, users of sanitized_anchor_name will get anchor names
// that are incompatible with those generated by blackfriday.

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package blackfriday
import (
"html"
"io"
)
var htmlEscaper = [256][]byte{
'&': []byte("&amp;"),
'<': []byte("&lt;"),
'>': []byte("&gt;"),
'"': []byte("&quot;"),
}
func escapeHTML(w io.Writer, s []byte) {
escapeEntities(w, s, false)
}
func escapeAllHTML(w io.Writer, s []byte) {
escapeEntities(w, s, true)
}
func escapeEntities(w io.Writer, s []byte, escapeValidEntities bool) {
var start, end int
for end < len(s) {
escSeq := htmlEscaper[s[end]]
if escSeq != nil {
isEntity, entityEnd := nodeIsEntity(s, end)
if isEntity && !escapeValidEntities {
w.Write(s[start : entityEnd+1])
start = entityEnd + 1
} else {
w.Write(s[start:end])
w.Write(escSeq)
start = end + 1
}
}
end++
}
if start < len(s) && end <= len(s) {
w.Write(s[start:end])
}
}
func nodeIsEntity(s []byte, end int) (isEntity bool, endEntityPos int) {
isEntity = false
endEntityPos = end + 1
if s[end] == '&' {
for endEntityPos < len(s) {
if s[endEntityPos] == ';' {
if entities[string(s[end:endEntityPos+1])] {
isEntity = true
break
}
}
if !isalnum(s[endEntityPos]) && s[endEntityPos] != '&' && s[endEntityPos] != '#' {
break
}
endEntityPos++
}
}
return isEntity, endEntityPos
}
func escLink(w io.Writer, text []byte) {
unesc := html.UnescapeString(string(text))
escapeHTML(w, []byte(unesc))
}

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//
// Blackfriday Markdown Processor
// Available at http://github.com/russross/blackfriday
//
// Copyright © 2011 Russ Ross <russ@russross.com>.
// Distributed under the Simplified BSD License.
// See README.md for details.
//
//
//
// HTML rendering backend
//
//
package blackfriday
import (
"bytes"
"fmt"
"io"
"regexp"
"strings"
)
// HTMLFlags control optional behavior of HTML renderer.
type HTMLFlags int
// HTML renderer configuration options.
const (
HTMLFlagsNone HTMLFlags = 0
SkipHTML HTMLFlags = 1 << iota // Skip preformatted HTML blocks
SkipImages // Skip embedded images
SkipLinks // Skip all links
Safelink // Only link to trusted protocols
NofollowLinks // Only link with rel="nofollow"
NoreferrerLinks // Only link with rel="noreferrer"
NoopenerLinks // Only link with rel="noopener"
HrefTargetBlank // Add a blank target
CompletePage // Generate a complete HTML page
UseXHTML // Generate XHTML output instead of HTML
FootnoteReturnLinks // Generate a link at the end of a footnote to return to the source
Smartypants // Enable smart punctuation substitutions
SmartypantsFractions // Enable smart fractions (with Smartypants)
SmartypantsDashes // Enable smart dashes (with Smartypants)
SmartypantsLatexDashes // Enable LaTeX-style dashes (with Smartypants)
SmartypantsAngledQuotes // Enable angled double quotes (with Smartypants) for double quotes rendering
SmartypantsQuotesNBSP // Enable « French guillemets » (with Smartypants)
TOC // Generate a table of contents
)
var (
htmlTagRe = regexp.MustCompile("(?i)^" + htmlTag)
)
const (
htmlTag = "(?:" + openTag + "|" + closeTag + "|" + htmlComment + "|" +
processingInstruction + "|" + declaration + "|" + cdata + ")"
closeTag = "</" + tagName + "\\s*[>]"
openTag = "<" + tagName + attribute + "*" + "\\s*/?>"
attribute = "(?:" + "\\s+" + attributeName + attributeValueSpec + "?)"
attributeValue = "(?:" + unquotedValue + "|" + singleQuotedValue + "|" + doubleQuotedValue + ")"
attributeValueSpec = "(?:" + "\\s*=" + "\\s*" + attributeValue + ")"
attributeName = "[a-zA-Z_:][a-zA-Z0-9:._-]*"
cdata = "<!\\[CDATA\\[[\\s\\S]*?\\]\\]>"
declaration = "<![A-Z]+" + "\\s+[^>]*>"
doubleQuotedValue = "\"[^\"]*\""
htmlComment = "<!---->|<!--(?:-?[^>-])(?:-?[^-])*-->"
processingInstruction = "[<][?].*?[?][>]"
singleQuotedValue = "'[^']*'"
tagName = "[A-Za-z][A-Za-z0-9-]*"
unquotedValue = "[^\"'=<>`\\x00-\\x20]+"
)
// HTMLRendererParameters is a collection of supplementary parameters tweaking
// the behavior of various parts of HTML renderer.
type HTMLRendererParameters struct {
// Prepend this text to each relative URL.
AbsolutePrefix string
// Add this text to each footnote anchor, to ensure uniqueness.
FootnoteAnchorPrefix string
// Show this text inside the <a> tag for a footnote return link, if the
// HTML_FOOTNOTE_RETURN_LINKS flag is enabled. If blank, the string
// <sup>[return]</sup> is used.
FootnoteReturnLinkContents string
// If set, add this text to the front of each Heading ID, to ensure
// uniqueness.
HeadingIDPrefix string
// If set, add this text to the back of each Heading ID, to ensure uniqueness.
HeadingIDSuffix string
// Increase heading levels: if the offset is 1, <h1> becomes <h2> etc.
// Negative offset is also valid.
// Resulting levels are clipped between 1 and 6.
HeadingLevelOffset int
Title string // Document title (used if CompletePage is set)
CSS string // Optional CSS file URL (used if CompletePage is set)
Icon string // Optional icon file URL (used if CompletePage is set)
Flags HTMLFlags // Flags allow customizing this renderer's behavior
}
// HTMLRenderer is a type that implements the Renderer interface for HTML output.
//
// Do not create this directly, instead use the NewHTMLRenderer function.
type HTMLRenderer struct {
HTMLRendererParameters
closeTag string // how to end singleton tags: either " />" or ">"
// Track heading IDs to prevent ID collision in a single generation.
headingIDs map[string]int
lastOutputLen int
disableTags int
sr *SPRenderer
}
const (
xhtmlClose = " />"
htmlClose = ">"
)
// NewHTMLRenderer creates and configures an HTMLRenderer object, which
// satisfies the Renderer interface.
func NewHTMLRenderer(params HTMLRendererParameters) *HTMLRenderer {
// configure the rendering engine
closeTag := htmlClose
if params.Flags&UseXHTML != 0 {
closeTag = xhtmlClose
}
if params.FootnoteReturnLinkContents == "" {
// U+FE0E is VARIATION SELECTOR-15.
// It suppresses automatic emoji presentation of the preceding
// U+21A9 LEFTWARDS ARROW WITH HOOK on iOS and iPadOS.
params.FootnoteReturnLinkContents = "<span aria-label='Return'>↩\ufe0e</span>"
}
return &HTMLRenderer{
HTMLRendererParameters: params,
closeTag: closeTag,
headingIDs: make(map[string]int),
sr: NewSmartypantsRenderer(params.Flags),
}
}
func isHTMLTag(tag []byte, tagname string) bool {
found, _ := findHTMLTagPos(tag, tagname)
return found
}
// Look for a character, but ignore it when it's in any kind of quotes, it
// might be JavaScript
func skipUntilCharIgnoreQuotes(html []byte, start int, char byte) int {
inSingleQuote := false
inDoubleQuote := false
inGraveQuote := false
i := start
for i < len(html) {
switch {
case html[i] == char && !inSingleQuote && !inDoubleQuote && !inGraveQuote:
return i
case html[i] == '\'':
inSingleQuote = !inSingleQuote
case html[i] == '"':
inDoubleQuote = !inDoubleQuote
case html[i] == '`':
inGraveQuote = !inGraveQuote
}
i++
}
return start
}
func findHTMLTagPos(tag []byte, tagname string) (bool, int) {
i := 0
if i < len(tag) && tag[0] != '<' {
return false, -1
}
i++
i = skipSpace(tag, i)
if i < len(tag) && tag[i] == '/' {
i++
}
i = skipSpace(tag, i)
j := 0
for ; i < len(tag); i, j = i+1, j+1 {
if j >= len(tagname) {
break
}
if strings.ToLower(string(tag[i]))[0] != tagname[j] {
return false, -1
}
}
if i == len(tag) {
return false, -1
}
rightAngle := skipUntilCharIgnoreQuotes(tag, i, '>')
if rightAngle >= i {
return true, rightAngle
}
return false, -1
}
func skipSpace(tag []byte, i int) int {
for i < len(tag) && isspace(tag[i]) {
i++
}
return i
}
func isRelativeLink(link []byte) (yes bool) {
// a tag begin with '#'
if link[0] == '#' {
return true
}
// link begin with '/' but not '//', the second maybe a protocol relative link
if len(link) >= 2 && link[0] == '/' && link[1] != '/' {
return true
}
// only the root '/'
if len(link) == 1 && link[0] == '/' {
return true
}
// current directory : begin with "./"
if bytes.HasPrefix(link, []byte("./")) {
return true
}
// parent directory : begin with "../"
if bytes.HasPrefix(link, []byte("../")) {
return true
}
return false
}
func (r *HTMLRenderer) ensureUniqueHeadingID(id string) string {
for count, found := r.headingIDs[id]; found; count, found = r.headingIDs[id] {
tmp := fmt.Sprintf("%s-%d", id, count+1)
if _, tmpFound := r.headingIDs[tmp]; !tmpFound {
r.headingIDs[id] = count + 1
id = tmp
} else {
id = id + "-1"
}
}
if _, found := r.headingIDs[id]; !found {
r.headingIDs[id] = 0
}
return id
}
func (r *HTMLRenderer) addAbsPrefix(link []byte) []byte {
if r.AbsolutePrefix != "" && isRelativeLink(link) && link[0] != '.' {
newDest := r.AbsolutePrefix
if link[0] != '/' {
newDest += "/"
}
newDest += string(link)
return []byte(newDest)
}
return link
}
func appendLinkAttrs(attrs []string, flags HTMLFlags, link []byte) []string {
if isRelativeLink(link) {
return attrs
}
val := []string{}
if flags&NofollowLinks != 0 {
val = append(val, "nofollow")
}
if flags&NoreferrerLinks != 0 {
val = append(val, "noreferrer")
}
if flags&NoopenerLinks != 0 {
val = append(val, "noopener")
}
if flags&HrefTargetBlank != 0 {
attrs = append(attrs, "target=\"_blank\"")
}
if len(val) == 0 {
return attrs
}
attr := fmt.Sprintf("rel=%q", strings.Join(val, " "))
return append(attrs, attr)
}
func isMailto(link []byte) bool {
return bytes.HasPrefix(link, []byte("mailto:"))
}
func needSkipLink(flags HTMLFlags, dest []byte) bool {
if flags&SkipLinks != 0 {
return true
}
return flags&Safelink != 0 && !isSafeLink(dest) && !isMailto(dest)
}
func isSmartypantable(node *Node) bool {
pt := node.Parent.Type
return pt != Link && pt != CodeBlock && pt != Code
}
func appendLanguageAttr(attrs []string, info []byte) []string {
if len(info) == 0 {
return attrs
}
endOfLang := bytes.IndexAny(info, "\t ")
if endOfLang < 0 {
endOfLang = len(info)
}
return append(attrs, fmt.Sprintf("class=\"language-%s\"", info[:endOfLang]))
}
func (r *HTMLRenderer) tag(w io.Writer, name []byte, attrs []string) {
w.Write(name)
if len(attrs) > 0 {
w.Write(spaceBytes)
w.Write([]byte(strings.Join(attrs, " ")))
}
w.Write(gtBytes)
r.lastOutputLen = 1
}
func footnoteRef(prefix string, node *Node) []byte {
urlFrag := prefix + string(slugify(node.Destination))
anchor := fmt.Sprintf(`<a href="#fn:%s">%d</a>`, urlFrag, node.NoteID)
return []byte(fmt.Sprintf(`<sup class="footnote-ref" id="fnref:%s">%s</sup>`, urlFrag, anchor))
}
func footnoteItem(prefix string, slug []byte) []byte {
return []byte(fmt.Sprintf(`<li id="fn:%s%s">`, prefix, slug))
}
func footnoteReturnLink(prefix, returnLink string, slug []byte) []byte {
const format = ` <a class="footnote-return" href="#fnref:%s%s">%s</a>`
return []byte(fmt.Sprintf(format, prefix, slug, returnLink))
}
func itemOpenCR(node *Node) bool {
if node.Prev == nil {
return false
}
ld := node.Parent.ListData
return !ld.Tight && ld.ListFlags&ListTypeDefinition == 0
}
func skipParagraphTags(node *Node) bool {
grandparent := node.Parent.Parent
if grandparent == nil || grandparent.Type != List {
return false
}
tightOrTerm := grandparent.Tight || node.Parent.ListFlags&ListTypeTerm != 0
return grandparent.Type == List && tightOrTerm
}
func cellAlignment(align CellAlignFlags) string {
switch align {
case TableAlignmentLeft:
return "left"
case TableAlignmentRight:
return "right"
case TableAlignmentCenter:
return "center"
default:
return ""
}
}
func (r *HTMLRenderer) out(w io.Writer, text []byte) {
if r.disableTags > 0 {
w.Write(htmlTagRe.ReplaceAll(text, []byte{}))
} else {
w.Write(text)
}
r.lastOutputLen = len(text)
}
func (r *HTMLRenderer) cr(w io.Writer) {
if r.lastOutputLen > 0 {
r.out(w, nlBytes)
}
}
var (
nlBytes = []byte{'\n'}
gtBytes = []byte{'>'}
spaceBytes = []byte{' '}
)
var (
brTag = []byte("<br>")
brXHTMLTag = []byte("<br />")
emTag = []byte("<em>")
emCloseTag = []byte("</em>")
strongTag = []byte("<strong>")
strongCloseTag = []byte("</strong>")
delTag = []byte("<del>")
delCloseTag = []byte("</del>")
ttTag = []byte("<tt>")
ttCloseTag = []byte("</tt>")
aTag = []byte("<a")
aCloseTag = []byte("</a>")
preTag = []byte("<pre>")
preCloseTag = []byte("</pre>")
codeTag = []byte("<code>")
codeCloseTag = []byte("</code>")
pTag = []byte("<p>")
pCloseTag = []byte("</p>")
blockquoteTag = []byte("<blockquote>")
blockquoteCloseTag = []byte("</blockquote>")
hrTag = []byte("<hr>")
hrXHTMLTag = []byte("<hr />")
ulTag = []byte("<ul>")
ulCloseTag = []byte("</ul>")
olTag = []byte("<ol>")
olCloseTag = []byte("</ol>")
dlTag = []byte("<dl>")
dlCloseTag = []byte("</dl>")
liTag = []byte("<li>")
liCloseTag = []byte("</li>")
ddTag = []byte("<dd>")
ddCloseTag = []byte("</dd>")
dtTag = []byte("<dt>")
dtCloseTag = []byte("</dt>")
tableTag = []byte("<table>")
tableCloseTag = []byte("</table>")
tdTag = []byte("<td")
tdCloseTag = []byte("</td>")
thTag = []byte("<th")
thCloseTag = []byte("</th>")
theadTag = []byte("<thead>")
theadCloseTag = []byte("</thead>")
tbodyTag = []byte("<tbody>")
tbodyCloseTag = []byte("</tbody>")
trTag = []byte("<tr>")
trCloseTag = []byte("</tr>")
h1Tag = []byte("<h1")
h1CloseTag = []byte("</h1>")
h2Tag = []byte("<h2")
h2CloseTag = []byte("</h2>")
h3Tag = []byte("<h3")
h3CloseTag = []byte("</h3>")
h4Tag = []byte("<h4")
h4CloseTag = []byte("</h4>")
h5Tag = []byte("<h5")
h5CloseTag = []byte("</h5>")
h6Tag = []byte("<h6")
h6CloseTag = []byte("</h6>")
footnotesDivBytes = []byte("\n<div class=\"footnotes\">\n\n")
footnotesCloseDivBytes = []byte("\n</div>\n")
)
func headingTagsFromLevel(level int) ([]byte, []byte) {
if level <= 1 {
return h1Tag, h1CloseTag
}
switch level {
case 2:
return h2Tag, h2CloseTag
case 3:
return h3Tag, h3CloseTag
case 4:
return h4Tag, h4CloseTag
case 5:
return h5Tag, h5CloseTag
}
return h6Tag, h6CloseTag
}
func (r *HTMLRenderer) outHRTag(w io.Writer) {
if r.Flags&UseXHTML == 0 {
r.out(w, hrTag)
} else {
r.out(w, hrXHTMLTag)
}
}
// RenderNode is a default renderer of a single node of a syntax tree. For
// block nodes it will be called twice: first time with entering=true, second
// time with entering=false, so that it could know when it's working on an open
// tag and when on close. It writes the result to w.
//
// The return value is a way to tell the calling walker to adjust its walk
// pattern: e.g. it can terminate the traversal by returning Terminate. Or it
// can ask the walker to skip a subtree of this node by returning SkipChildren.
// The typical behavior is to return GoToNext, which asks for the usual
// traversal to the next node.
func (r *HTMLRenderer) RenderNode(w io.Writer, node *Node, entering bool) WalkStatus {
attrs := []string{}
switch node.Type {
case Text:
if r.Flags&Smartypants != 0 {
var tmp bytes.Buffer
escapeHTML(&tmp, node.Literal)
r.sr.Process(w, tmp.Bytes())
} else {
if node.Parent.Type == Link {
escLink(w, node.Literal)
} else {
escapeHTML(w, node.Literal)
}
}
case Softbreak:
r.cr(w)
// TODO: make it configurable via out(renderer.softbreak)
case Hardbreak:
if r.Flags&UseXHTML == 0 {
r.out(w, brTag)
} else {
r.out(w, brXHTMLTag)
}
r.cr(w)
case Emph:
if entering {
r.out(w, emTag)
} else {
r.out(w, emCloseTag)
}
case Strong:
if entering {
r.out(w, strongTag)
} else {
r.out(w, strongCloseTag)
}
case Del:
if entering {
r.out(w, delTag)
} else {
r.out(w, delCloseTag)
}
case HTMLSpan:
if r.Flags&SkipHTML != 0 {
break
}
r.out(w, node.Literal)
case Link:
// mark it but don't link it if it is not a safe link: no smartypants
dest := node.LinkData.Destination
if needSkipLink(r.Flags, dest) {
if entering {
r.out(w, ttTag)
} else {
r.out(w, ttCloseTag)
}
} else {
if entering {
dest = r.addAbsPrefix(dest)
var hrefBuf bytes.Buffer
hrefBuf.WriteString("href=\"")
escLink(&hrefBuf, dest)
hrefBuf.WriteByte('"')
attrs = append(attrs, hrefBuf.String())
if node.NoteID != 0 {
r.out(w, footnoteRef(r.FootnoteAnchorPrefix, node))
break
}
attrs = appendLinkAttrs(attrs, r.Flags, dest)
if len(node.LinkData.Title) > 0 {
var titleBuff bytes.Buffer
titleBuff.WriteString("title=\"")
escapeHTML(&titleBuff, node.LinkData.Title)
titleBuff.WriteByte('"')
attrs = append(attrs, titleBuff.String())
}
r.tag(w, aTag, attrs)
} else {
if node.NoteID != 0 {
break
}
r.out(w, aCloseTag)
}
}
case Image:
if r.Flags&SkipImages != 0 {
return SkipChildren
}
if entering {
dest := node.LinkData.Destination
dest = r.addAbsPrefix(dest)
if r.disableTags == 0 {
//if options.safe && potentiallyUnsafe(dest) {
//out(w, `<img src="" alt="`)
//} else {
r.out(w, []byte(`<img src="`))
escLink(w, dest)
r.out(w, []byte(`" alt="`))
//}
}
r.disableTags++
} else {
r.disableTags--
if r.disableTags == 0 {
if node.LinkData.Title != nil {
r.out(w, []byte(`" title="`))
escapeHTML(w, node.LinkData.Title)
}
r.out(w, []byte(`" />`))
}
}
case Code:
r.out(w, codeTag)
escapeAllHTML(w, node.Literal)
r.out(w, codeCloseTag)
case Document:
break
case Paragraph:
if skipParagraphTags(node) {
break
}
if entering {
// TODO: untangle this clusterfuck about when the newlines need
// to be added and when not.
if node.Prev != nil {
switch node.Prev.Type {
case HTMLBlock, List, Paragraph, Heading, CodeBlock, BlockQuote, HorizontalRule:
r.cr(w)
}
}
if node.Parent.Type == BlockQuote && node.Prev == nil {
r.cr(w)
}
r.out(w, pTag)
} else {
r.out(w, pCloseTag)
if !(node.Parent.Type == Item && node.Next == nil) {
r.cr(w)
}
}
case BlockQuote:
if entering {
r.cr(w)
r.out(w, blockquoteTag)
} else {
r.out(w, blockquoteCloseTag)
r.cr(w)
}
case HTMLBlock:
if r.Flags&SkipHTML != 0 {
break
}
r.cr(w)
r.out(w, node.Literal)
r.cr(w)
case Heading:
headingLevel := r.HTMLRendererParameters.HeadingLevelOffset + node.Level
openTag, closeTag := headingTagsFromLevel(headingLevel)
if entering {
if node.IsTitleblock {
attrs = append(attrs, `class="title"`)
}
if node.HeadingID != "" {
id := r.ensureUniqueHeadingID(node.HeadingID)
if r.HeadingIDPrefix != "" {
id = r.HeadingIDPrefix + id
}
if r.HeadingIDSuffix != "" {
id = id + r.HeadingIDSuffix
}
attrs = append(attrs, fmt.Sprintf(`id="%s"`, id))
}
r.cr(w)
r.tag(w, openTag, attrs)
} else {
r.out(w, closeTag)
if !(node.Parent.Type == Item && node.Next == nil) {
r.cr(w)
}
}
case HorizontalRule:
r.cr(w)
r.outHRTag(w)
r.cr(w)
case List:
openTag := ulTag
closeTag := ulCloseTag
if node.ListFlags&ListTypeOrdered != 0 {
openTag = olTag
closeTag = olCloseTag
}
if node.ListFlags&ListTypeDefinition != 0 {
openTag = dlTag
closeTag = dlCloseTag
}
if entering {
if node.IsFootnotesList {
r.out(w, footnotesDivBytes)
r.outHRTag(w)
r.cr(w)
}
r.cr(w)
if node.Parent.Type == Item && node.Parent.Parent.Tight {
r.cr(w)
}
r.tag(w, openTag[:len(openTag)-1], attrs)
r.cr(w)
} else {
r.out(w, closeTag)
//cr(w)
//if node.parent.Type != Item {
// cr(w)
//}
if node.Parent.Type == Item && node.Next != nil {
r.cr(w)
}
if node.Parent.Type == Document || node.Parent.Type == BlockQuote {
r.cr(w)
}
if node.IsFootnotesList {
r.out(w, footnotesCloseDivBytes)
}
}
case Item:
openTag := liTag
closeTag := liCloseTag
if node.ListFlags&ListTypeDefinition != 0 {
openTag = ddTag
closeTag = ddCloseTag
}
if node.ListFlags&ListTypeTerm != 0 {
openTag = dtTag
closeTag = dtCloseTag
}
if entering {
if itemOpenCR(node) {
r.cr(w)
}
if node.ListData.RefLink != nil {
slug := slugify(node.ListData.RefLink)
r.out(w, footnoteItem(r.FootnoteAnchorPrefix, slug))
break
}
r.out(w, openTag)
} else {
if node.ListData.RefLink != nil {
slug := slugify(node.ListData.RefLink)
if r.Flags&FootnoteReturnLinks != 0 {
r.out(w, footnoteReturnLink(r.FootnoteAnchorPrefix, r.FootnoteReturnLinkContents, slug))
}
}
r.out(w, closeTag)
r.cr(w)
}
case CodeBlock:
attrs = appendLanguageAttr(attrs, node.Info)
r.cr(w)
r.out(w, preTag)
r.tag(w, codeTag[:len(codeTag)-1], attrs)
escapeAllHTML(w, node.Literal)
r.out(w, codeCloseTag)
r.out(w, preCloseTag)
if node.Parent.Type != Item {
r.cr(w)
}
case Table:
if entering {
r.cr(w)
r.out(w, tableTag)
} else {
r.out(w, tableCloseTag)
r.cr(w)
}
case TableCell:
openTag := tdTag
closeTag := tdCloseTag
if node.IsHeader {
openTag = thTag
closeTag = thCloseTag
}
if entering {
align := cellAlignment(node.Align)
if align != "" {
attrs = append(attrs, fmt.Sprintf(`align="%s"`, align))
}
if node.Prev == nil {
r.cr(w)
}
r.tag(w, openTag, attrs)
} else {
r.out(w, closeTag)
r.cr(w)
}
case TableHead:
if entering {
r.cr(w)
r.out(w, theadTag)
} else {
r.out(w, theadCloseTag)
r.cr(w)
}
case TableBody:
if entering {
r.cr(w)
r.out(w, tbodyTag)
// XXX: this is to adhere to a rather silly test. Should fix test.
if node.FirstChild == nil {
r.cr(w)
}
} else {
r.out(w, tbodyCloseTag)
r.cr(w)
}
case TableRow:
if entering {
r.cr(w)
r.out(w, trTag)
} else {
r.out(w, trCloseTag)
r.cr(w)
}
default:
panic("Unknown node type " + node.Type.String())
}
return GoToNext
}
// RenderHeader writes HTML document preamble and TOC if requested.
func (r *HTMLRenderer) RenderHeader(w io.Writer, ast *Node) {
r.writeDocumentHeader(w)
if r.Flags&TOC != 0 {
r.writeTOC(w, ast)
}
}
// RenderFooter writes HTML document footer.
func (r *HTMLRenderer) RenderFooter(w io.Writer, ast *Node) {
if r.Flags&CompletePage == 0 {
return
}
io.WriteString(w, "\n</body>\n</html>\n")
}
func (r *HTMLRenderer) writeDocumentHeader(w io.Writer) {
if r.Flags&CompletePage == 0 {
return
}
ending := ""
if r.Flags&UseXHTML != 0 {
io.WriteString(w, "<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Transitional//EN\" ")
io.WriteString(w, "\"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd\">\n")
io.WriteString(w, "<html xmlns=\"http://www.w3.org/1999/xhtml\">\n")
ending = " /"
} else {
io.WriteString(w, "<!DOCTYPE html>\n")
io.WriteString(w, "<html>\n")
}
io.WriteString(w, "<head>\n")
io.WriteString(w, " <title>")
if r.Flags&Smartypants != 0 {
r.sr.Process(w, []byte(r.Title))
} else {
escapeHTML(w, []byte(r.Title))
}
io.WriteString(w, "</title>\n")
io.WriteString(w, " <meta name=\"GENERATOR\" content=\"Blackfriday Markdown Processor v")
io.WriteString(w, Version)
io.WriteString(w, "\"")
io.WriteString(w, ending)
io.WriteString(w, ">\n")
io.WriteString(w, " <meta charset=\"utf-8\"")
io.WriteString(w, ending)
io.WriteString(w, ">\n")
if r.CSS != "" {
io.WriteString(w, " <link rel=\"stylesheet\" type=\"text/css\" href=\"")
escapeHTML(w, []byte(r.CSS))
io.WriteString(w, "\"")
io.WriteString(w, ending)
io.WriteString(w, ">\n")
}
if r.Icon != "" {
io.WriteString(w, " <link rel=\"icon\" type=\"image/x-icon\" href=\"")
escapeHTML(w, []byte(r.Icon))
io.WriteString(w, "\"")
io.WriteString(w, ending)
io.WriteString(w, ">\n")
}
io.WriteString(w, "</head>\n")
io.WriteString(w, "<body>\n\n")
}
func (r *HTMLRenderer) writeTOC(w io.Writer, ast *Node) {
buf := bytes.Buffer{}
inHeading := false
tocLevel := 0
headingCount := 0
ast.Walk(func(node *Node, entering bool) WalkStatus {
if node.Type == Heading && !node.HeadingData.IsTitleblock {
inHeading = entering
if entering {
node.HeadingID = fmt.Sprintf("toc_%d", headingCount)
if node.Level == tocLevel {
buf.WriteString("</li>\n\n<li>")
} else if node.Level < tocLevel {
for node.Level < tocLevel {
tocLevel--
buf.WriteString("</li>\n</ul>")
}
buf.WriteString("</li>\n\n<li>")
} else {
for node.Level > tocLevel {
tocLevel++
buf.WriteString("\n<ul>\n<li>")
}
}
fmt.Fprintf(&buf, `<a href="#toc_%d">`, headingCount)
headingCount++
} else {
buf.WriteString("</a>")
}
return GoToNext
}
if inHeading {
return r.RenderNode(&buf, node, entering)
}
return GoToNext
})
for ; tocLevel > 0; tocLevel-- {
buf.WriteString("</li>\n</ul>")
}
if buf.Len() > 0 {
io.WriteString(w, "<nav>\n")
w.Write(buf.Bytes())
io.WriteString(w, "\n\n</nav>\n")
}
r.lastOutputLen = buf.Len()
}

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// Blackfriday Markdown Processor
// Available at http://github.com/russross/blackfriday
//
// Copyright © 2011 Russ Ross <russ@russross.com>.
// Distributed under the Simplified BSD License.
// See README.md for details.
package blackfriday
import (
"bytes"
"fmt"
"io"
"strings"
"unicode/utf8"
)
//
// Markdown parsing and processing
//
// Version string of the package. Appears in the rendered document when
// CompletePage flag is on.
const Version = "2.0"
// Extensions is a bitwise or'ed collection of enabled Blackfriday's
// extensions.
type Extensions int
// These are the supported markdown parsing extensions.
// OR these values together to select multiple extensions.
const (
NoExtensions Extensions = 0
NoIntraEmphasis Extensions = 1 << iota // Ignore emphasis markers inside words
Tables // Render tables
FencedCode // Render fenced code blocks
Autolink // Detect embedded URLs that are not explicitly marked
Strikethrough // Strikethrough text using ~~test~~
LaxHTMLBlocks // Loosen up HTML block parsing rules
SpaceHeadings // Be strict about prefix heading rules
HardLineBreak // Translate newlines into line breaks
TabSizeEight // Expand tabs to eight spaces instead of four
Footnotes // Pandoc-style footnotes
NoEmptyLineBeforeBlock // No need to insert an empty line to start a (code, quote, ordered list, unordered list) block
HeadingIDs // specify heading IDs with {#id}
Titleblock // Titleblock ala pandoc
AutoHeadingIDs // Create the heading ID from the text
BackslashLineBreak // Translate trailing backslashes into line breaks
DefinitionLists // Render definition lists
CommonHTMLFlags HTMLFlags = UseXHTML | Smartypants |
SmartypantsFractions | SmartypantsDashes | SmartypantsLatexDashes
CommonExtensions Extensions = NoIntraEmphasis | Tables | FencedCode |
Autolink | Strikethrough | SpaceHeadings | HeadingIDs |
BackslashLineBreak | DefinitionLists
)
// ListType contains bitwise or'ed flags for list and list item objects.
type ListType int
// These are the possible flag values for the ListItem renderer.
// Multiple flag values may be ORed together.
// These are mostly of interest if you are writing a new output format.
const (
ListTypeOrdered ListType = 1 << iota
ListTypeDefinition
ListTypeTerm
ListItemContainsBlock
ListItemBeginningOfList // TODO: figure out if this is of any use now
ListItemEndOfList
)
// CellAlignFlags holds a type of alignment in a table cell.
type CellAlignFlags int
// These are the possible flag values for the table cell renderer.
// Only a single one of these values will be used; they are not ORed together.
// These are mostly of interest if you are writing a new output format.
const (
TableAlignmentLeft CellAlignFlags = 1 << iota
TableAlignmentRight
TableAlignmentCenter = (TableAlignmentLeft | TableAlignmentRight)
)
// The size of a tab stop.
const (
TabSizeDefault = 4
TabSizeDouble = 8
)
// blockTags is a set of tags that are recognized as HTML block tags.
// Any of these can be included in markdown text without special escaping.
var blockTags = map[string]struct{}{
"blockquote": {},
"del": {},
"div": {},
"dl": {},
"fieldset": {},
"form": {},
"h1": {},
"h2": {},
"h3": {},
"h4": {},
"h5": {},
"h6": {},
"iframe": {},
"ins": {},
"math": {},
"noscript": {},
"ol": {},
"pre": {},
"p": {},
"script": {},
"style": {},
"table": {},
"ul": {},
// HTML5
"address": {},
"article": {},
"aside": {},
"canvas": {},
"figcaption": {},
"figure": {},
"footer": {},
"header": {},
"hgroup": {},
"main": {},
"nav": {},
"output": {},
"progress": {},
"section": {},
"video": {},
}
// Renderer is the rendering interface. This is mostly of interest if you are
// implementing a new rendering format.
//
// Only an HTML implementation is provided in this repository, see the README
// for external implementations.
type Renderer interface {
// RenderNode is the main rendering method. It will be called once for
// every leaf node and twice for every non-leaf node (first with
// entering=true, then with entering=false). The method should write its
// rendition of the node to the supplied writer w.
RenderNode(w io.Writer, node *Node, entering bool) WalkStatus
// RenderHeader is a method that allows the renderer to produce some
// content preceding the main body of the output document. The header is
// understood in the broad sense here. For example, the default HTML
// renderer will write not only the HTML document preamble, but also the
// table of contents if it was requested.
//
// The method will be passed an entire document tree, in case a particular
// implementation needs to inspect it to produce output.
//
// The output should be written to the supplied writer w. If your
// implementation has no header to write, supply an empty implementation.
RenderHeader(w io.Writer, ast *Node)
// RenderFooter is a symmetric counterpart of RenderHeader.
RenderFooter(w io.Writer, ast *Node)
}
// Callback functions for inline parsing. One such function is defined
// for each character that triggers a response when parsing inline data.
type inlineParser func(p *Markdown, data []byte, offset int) (int, *Node)
// Markdown is a type that holds extensions and the runtime state used by
// Parse, and the renderer. You can not use it directly, construct it with New.
type Markdown struct {
renderer Renderer
referenceOverride ReferenceOverrideFunc
refs map[string]*reference
inlineCallback [256]inlineParser
extensions Extensions
nesting int
maxNesting int
insideLink bool
// Footnotes need to be ordered as well as available to quickly check for
// presence. If a ref is also a footnote, it's stored both in refs and here
// in notes. Slice is nil if footnotes not enabled.
notes []*reference
doc *Node
tip *Node // = doc
oldTip *Node
lastMatchedContainer *Node // = doc
allClosed bool
}
func (p *Markdown) getRef(refid string) (ref *reference, found bool) {
if p.referenceOverride != nil {
r, overridden := p.referenceOverride(refid)
if overridden {
if r == nil {
return nil, false
}
return &reference{
link: []byte(r.Link),
title: []byte(r.Title),
noteID: 0,
hasBlock: false,
text: []byte(r.Text)}, true
}
}
// refs are case insensitive
ref, found = p.refs[strings.ToLower(refid)]
return ref, found
}
func (p *Markdown) finalize(block *Node) {
above := block.Parent
block.open = false
p.tip = above
}
func (p *Markdown) addChild(node NodeType, offset uint32) *Node {
return p.addExistingChild(NewNode(node), offset)
}
func (p *Markdown) addExistingChild(node *Node, offset uint32) *Node {
for !p.tip.canContain(node.Type) {
p.finalize(p.tip)
}
p.tip.AppendChild(node)
p.tip = node
return node
}
func (p *Markdown) closeUnmatchedBlocks() {
if !p.allClosed {
for p.oldTip != p.lastMatchedContainer {
parent := p.oldTip.Parent
p.finalize(p.oldTip)
p.oldTip = parent
}
p.allClosed = true
}
}
//
//
// Public interface
//
//
// Reference represents the details of a link.
// See the documentation in Options for more details on use-case.
type Reference struct {
// Link is usually the URL the reference points to.
Link string
// Title is the alternate text describing the link in more detail.
Title string
// Text is the optional text to override the ref with if the syntax used was
// [refid][]
Text string
}
// ReferenceOverrideFunc is expected to be called with a reference string and
// return either a valid Reference type that the reference string maps to or
// nil. If overridden is false, the default reference logic will be executed.
// See the documentation in Options for more details on use-case.
type ReferenceOverrideFunc func(reference string) (ref *Reference, overridden bool)
// New constructs a Markdown processor. You can use the same With* functions as
// for Run() to customize parser's behavior and the renderer.
func New(opts ...Option) *Markdown {
var p Markdown
for _, opt := range opts {
opt(&p)
}
p.refs = make(map[string]*reference)
p.maxNesting = 16
p.insideLink = false
docNode := NewNode(Document)
p.doc = docNode
p.tip = docNode
p.oldTip = docNode
p.lastMatchedContainer = docNode
p.allClosed = true
// register inline parsers
p.inlineCallback[' '] = maybeLineBreak
p.inlineCallback['*'] = emphasis
p.inlineCallback['_'] = emphasis
if p.extensions&Strikethrough != 0 {
p.inlineCallback['~'] = emphasis
}
p.inlineCallback['`'] = codeSpan
p.inlineCallback['\n'] = lineBreak
p.inlineCallback['['] = link
p.inlineCallback['<'] = leftAngle
p.inlineCallback['\\'] = escape
p.inlineCallback['&'] = entity
p.inlineCallback['!'] = maybeImage
p.inlineCallback['^'] = maybeInlineFootnote
if p.extensions&Autolink != 0 {
p.inlineCallback['h'] = maybeAutoLink
p.inlineCallback['m'] = maybeAutoLink
p.inlineCallback['f'] = maybeAutoLink
p.inlineCallback['H'] = maybeAutoLink
p.inlineCallback['M'] = maybeAutoLink
p.inlineCallback['F'] = maybeAutoLink
}
if p.extensions&Footnotes != 0 {
p.notes = make([]*reference, 0)
}
return &p
}
// Option customizes the Markdown processor's default behavior.
type Option func(*Markdown)
// WithRenderer allows you to override the default renderer.
func WithRenderer(r Renderer) Option {
return func(p *Markdown) {
p.renderer = r
}
}
// WithExtensions allows you to pick some of the many extensions provided by
// Blackfriday. You can bitwise OR them.
func WithExtensions(e Extensions) Option {
return func(p *Markdown) {
p.extensions = e
}
}
// WithNoExtensions turns off all extensions and custom behavior.
func WithNoExtensions() Option {
return func(p *Markdown) {
p.extensions = NoExtensions
p.renderer = NewHTMLRenderer(HTMLRendererParameters{
Flags: HTMLFlagsNone,
})
}
}
// WithRefOverride sets an optional function callback that is called every
// time a reference is resolved.
//
// In Markdown, the link reference syntax can be made to resolve a link to
// a reference instead of an inline URL, in one of the following ways:
//
// * [link text][refid]
// * [refid][]
//
// Usually, the refid is defined at the bottom of the Markdown document. If
// this override function is provided, the refid is passed to the override
// function first, before consulting the defined refids at the bottom. If
// the override function indicates an override did not occur, the refids at
// the bottom will be used to fill in the link details.
func WithRefOverride(o ReferenceOverrideFunc) Option {
return func(p *Markdown) {
p.referenceOverride = o
}
}
// Run is the main entry point to Blackfriday. It parses and renders a
// block of markdown-encoded text.
//
// The simplest invocation of Run takes one argument, input:
// output := Run(input)
// This will parse the input with CommonExtensions enabled and render it with
// the default HTMLRenderer (with CommonHTMLFlags).
//
// Variadic arguments opts can customize the default behavior. Since Markdown
// type does not contain exported fields, you can not use it directly. Instead,
// use the With* functions. For example, this will call the most basic
// functionality, with no extensions:
// output := Run(input, WithNoExtensions())
//
// You can use any number of With* arguments, even contradicting ones. They
// will be applied in order of appearance and the latter will override the
// former:
// output := Run(input, WithNoExtensions(), WithExtensions(exts),
// WithRenderer(yourRenderer))
func Run(input []byte, opts ...Option) []byte {
r := NewHTMLRenderer(HTMLRendererParameters{
Flags: CommonHTMLFlags,
})
optList := []Option{WithRenderer(r), WithExtensions(CommonExtensions)}
optList = append(optList, opts...)
parser := New(optList...)
ast := parser.Parse(input)
var buf bytes.Buffer
parser.renderer.RenderHeader(&buf, ast)
ast.Walk(func(node *Node, entering bool) WalkStatus {
return parser.renderer.RenderNode(&buf, node, entering)
})
parser.renderer.RenderFooter(&buf, ast)
return buf.Bytes()
}
// Parse is an entry point to the parsing part of Blackfriday. It takes an
// input markdown document and produces a syntax tree for its contents. This
// tree can then be rendered with a default or custom renderer, or
// analyzed/transformed by the caller to whatever non-standard needs they have.
// The return value is the root node of the syntax tree.
func (p *Markdown) Parse(input []byte) *Node {
p.block(input)
// Walk the tree and finish up some of unfinished blocks
for p.tip != nil {
p.finalize(p.tip)
}
// Walk the tree again and process inline markdown in each block
p.doc.Walk(func(node *Node, entering bool) WalkStatus {
if node.Type == Paragraph || node.Type == Heading || node.Type == TableCell {
p.inline(node, node.content)
node.content = nil
}
return GoToNext
})
p.parseRefsToAST()
return p.doc
}
func (p *Markdown) parseRefsToAST() {
if p.extensions&Footnotes == 0 || len(p.notes) == 0 {
return
}
p.tip = p.doc
block := p.addBlock(List, nil)
block.IsFootnotesList = true
block.ListFlags = ListTypeOrdered
flags := ListItemBeginningOfList
// Note: this loop is intentionally explicit, not range-form. This is
// because the body of the loop will append nested footnotes to p.notes and
// we need to process those late additions. Range form would only walk over
// the fixed initial set.
for i := 0; i < len(p.notes); i++ {
ref := p.notes[i]
p.addExistingChild(ref.footnote, 0)
block := ref.footnote
block.ListFlags = flags | ListTypeOrdered
block.RefLink = ref.link
if ref.hasBlock {
flags |= ListItemContainsBlock
p.block(ref.title)
} else {
p.inline(block, ref.title)
}
flags &^= ListItemBeginningOfList | ListItemContainsBlock
}
above := block.Parent
finalizeList(block)
p.tip = above
block.Walk(func(node *Node, entering bool) WalkStatus {
if node.Type == Paragraph || node.Type == Heading {
p.inline(node, node.content)
node.content = nil
}
return GoToNext
})
}
//
// Link references
//
// This section implements support for references that (usually) appear
// as footnotes in a document, and can be referenced anywhere in the document.
// The basic format is:
//
// [1]: http://www.google.com/ "Google"
// [2]: http://www.github.com/ "Github"
//
// Anywhere in the document, the reference can be linked by referring to its
// label, i.e., 1 and 2 in this example, as in:
//
// This library is hosted on [Github][2], a git hosting site.
//
// Actual footnotes as specified in Pandoc and supported by some other Markdown
// libraries such as php-markdown are also taken care of. They look like this:
//
// This sentence needs a bit of further explanation.[^note]
//
// [^note]: This is the explanation.
//
// Footnotes should be placed at the end of the document in an ordered list.
// Finally, there are inline footnotes such as:
//
// Inline footnotes^[Also supported.] provide a quick inline explanation,
// but are rendered at the bottom of the document.
//
// reference holds all information necessary for a reference-style links or
// footnotes.
//
// Consider this markdown with reference-style links:
//
// [link][ref]
//
// [ref]: /url/ "tooltip title"
//
// It will be ultimately converted to this HTML:
//
// <p><a href=\"/url/\" title=\"title\">link</a></p>
//
// And a reference structure will be populated as follows:
//
// p.refs["ref"] = &reference{
// link: "/url/",
// title: "tooltip title",
// }
//
// Alternatively, reference can contain information about a footnote. Consider
// this markdown:
//
// Text needing a footnote.[^a]
//
// [^a]: This is the note
//
// A reference structure will be populated as follows:
//
// p.refs["a"] = &reference{
// link: "a",
// title: "This is the note",
// noteID: <some positive int>,
// }
//
// TODO: As you can see, it begs for splitting into two dedicated structures
// for refs and for footnotes.
type reference struct {
link []byte
title []byte
noteID int // 0 if not a footnote ref
hasBlock bool
footnote *Node // a link to the Item node within a list of footnotes
text []byte // only gets populated by refOverride feature with Reference.Text
}
func (r *reference) String() string {
return fmt.Sprintf("{link: %q, title: %q, text: %q, noteID: %d, hasBlock: %v}",
r.link, r.title, r.text, r.noteID, r.hasBlock)
}
// Check whether or not data starts with a reference link.
// If so, it is parsed and stored in the list of references
// (in the render struct).
// Returns the number of bytes to skip to move past it,
// or zero if the first line is not a reference.
func isReference(p *Markdown, data []byte, tabSize int) int {
// up to 3 optional leading spaces
if len(data) < 4 {
return 0
}
i := 0
for i < 3 && data[i] == ' ' {
i++
}
noteID := 0
// id part: anything but a newline between brackets
if data[i] != '[' {
return 0
}
i++
if p.extensions&Footnotes != 0 {
if i < len(data) && data[i] == '^' {
// we can set it to anything here because the proper noteIds will
// be assigned later during the second pass. It just has to be != 0
noteID = 1
i++
}
}
idOffset := i
for i < len(data) && data[i] != '\n' && data[i] != '\r' && data[i] != ']' {
i++
}
if i >= len(data) || data[i] != ']' {
return 0
}
idEnd := i
// footnotes can have empty ID, like this: [^], but a reference can not be
// empty like this: []. Break early if it's not a footnote and there's no ID
if noteID == 0 && idOffset == idEnd {
return 0
}
// spacer: colon (space | tab)* newline? (space | tab)*
i++
if i >= len(data) || data[i] != ':' {
return 0
}
i++
for i < len(data) && (data[i] == ' ' || data[i] == '\t') {
i++
}
if i < len(data) && (data[i] == '\n' || data[i] == '\r') {
i++
if i < len(data) && data[i] == '\n' && data[i-1] == '\r' {
i++
}
}
for i < len(data) && (data[i] == ' ' || data[i] == '\t') {
i++
}
if i >= len(data) {
return 0
}
var (
linkOffset, linkEnd int
titleOffset, titleEnd int
lineEnd int
raw []byte
hasBlock bool
)
if p.extensions&Footnotes != 0 && noteID != 0 {
linkOffset, linkEnd, raw, hasBlock = scanFootnote(p, data, i, tabSize)
lineEnd = linkEnd
} else {
linkOffset, linkEnd, titleOffset, titleEnd, lineEnd = scanLinkRef(p, data, i)
}
if lineEnd == 0 {
return 0
}
// a valid ref has been found
ref := &reference{
noteID: noteID,
hasBlock: hasBlock,
}
if noteID > 0 {
// reusing the link field for the id since footnotes don't have links
ref.link = data[idOffset:idEnd]
// if footnote, it's not really a title, it's the contained text
ref.title = raw
} else {
ref.link = data[linkOffset:linkEnd]
ref.title = data[titleOffset:titleEnd]
}
// id matches are case-insensitive
id := string(bytes.ToLower(data[idOffset:idEnd]))
p.refs[id] = ref
return lineEnd
}
func scanLinkRef(p *Markdown, data []byte, i int) (linkOffset, linkEnd, titleOffset, titleEnd, lineEnd int) {
// link: whitespace-free sequence, optionally between angle brackets
if data[i] == '<' {
i++
}
linkOffset = i
for i < len(data) && data[i] != ' ' && data[i] != '\t' && data[i] != '\n' && data[i] != '\r' {
i++
}
linkEnd = i
if data[linkOffset] == '<' && data[linkEnd-1] == '>' {
linkOffset++
linkEnd--
}
// optional spacer: (space | tab)* (newline | '\'' | '"' | '(' )
for i < len(data) && (data[i] == ' ' || data[i] == '\t') {
i++
}
if i < len(data) && data[i] != '\n' && data[i] != '\r' && data[i] != '\'' && data[i] != '"' && data[i] != '(' {
return
}
// compute end-of-line
if i >= len(data) || data[i] == '\r' || data[i] == '\n' {
lineEnd = i
}
if i+1 < len(data) && data[i] == '\r' && data[i+1] == '\n' {
lineEnd++
}
// optional (space|tab)* spacer after a newline
if lineEnd > 0 {
i = lineEnd + 1
for i < len(data) && (data[i] == ' ' || data[i] == '\t') {
i++
}
}
// optional title: any non-newline sequence enclosed in '"() alone on its line
if i+1 < len(data) && (data[i] == '\'' || data[i] == '"' || data[i] == '(') {
i++
titleOffset = i
// look for EOL
for i < len(data) && data[i] != '\n' && data[i] != '\r' {
i++
}
if i+1 < len(data) && data[i] == '\n' && data[i+1] == '\r' {
titleEnd = i + 1
} else {
titleEnd = i
}
// step back
i--
for i > titleOffset && (data[i] == ' ' || data[i] == '\t') {
i--
}
if i > titleOffset && (data[i] == '\'' || data[i] == '"' || data[i] == ')') {
lineEnd = titleEnd
titleEnd = i
}
}
return
}
// The first bit of this logic is the same as Parser.listItem, but the rest
// is much simpler. This function simply finds the entire block and shifts it
// over by one tab if it is indeed a block (just returns the line if it's not).
// blockEnd is the end of the section in the input buffer, and contents is the
// extracted text that was shifted over one tab. It will need to be rendered at
// the end of the document.
func scanFootnote(p *Markdown, data []byte, i, indentSize int) (blockStart, blockEnd int, contents []byte, hasBlock bool) {
if i == 0 || len(data) == 0 {
return
}
// skip leading whitespace on first line
for i < len(data) && data[i] == ' ' {
i++
}
blockStart = i
// find the end of the line
blockEnd = i
for i < len(data) && data[i-1] != '\n' {
i++
}
// get working buffer
var raw bytes.Buffer
// put the first line into the working buffer
raw.Write(data[blockEnd:i])
blockEnd = i
// process the following lines
containsBlankLine := false
gatherLines:
for blockEnd < len(data) {
i++
// find the end of this line
for i < len(data) && data[i-1] != '\n' {
i++
}
// if it is an empty line, guess that it is part of this item
// and move on to the next line
if p.isEmpty(data[blockEnd:i]) > 0 {
containsBlankLine = true
blockEnd = i
continue
}
n := 0
if n = isIndented(data[blockEnd:i], indentSize); n == 0 {
// this is the end of the block.
// we don't want to include this last line in the index.
break gatherLines
}
// if there were blank lines before this one, insert a new one now
if containsBlankLine {
raw.WriteByte('\n')
containsBlankLine = false
}
// get rid of that first tab, write to buffer
raw.Write(data[blockEnd+n : i])
hasBlock = true
blockEnd = i
}
if data[blockEnd-1] != '\n' {
raw.WriteByte('\n')
}
contents = raw.Bytes()
return
}
//
//
// Miscellaneous helper functions
//
//
// Test if a character is a punctuation symbol.
// Taken from a private function in regexp in the stdlib.
func ispunct(c byte) bool {
for _, r := range []byte("!\"#$%&'()*+,-./:;<=>?@[\\]^_`{|}~") {
if c == r {
return true
}
}
return false
}
// Test if a character is a whitespace character.
func isspace(c byte) bool {
return ishorizontalspace(c) || isverticalspace(c)
}
// Test if a character is a horizontal whitespace character.
func ishorizontalspace(c byte) bool {
return c == ' ' || c == '\t'
}
// Test if a character is a vertical character.
func isverticalspace(c byte) bool {
return c == '\n' || c == '\r' || c == '\f' || c == '\v'
}
// Test if a character is letter.
func isletter(c byte) bool {
return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z')
}
// Test if a character is a letter or a digit.
// TODO: check when this is looking for ASCII alnum and when it should use unicode
func isalnum(c byte) bool {
return (c >= '0' && c <= '9') || isletter(c)
}
// Replace tab characters with spaces, aligning to the next TAB_SIZE column.
// always ends output with a newline
func expandTabs(out *bytes.Buffer, line []byte, tabSize int) {
// first, check for common cases: no tabs, or only tabs at beginning of line
i, prefix := 0, 0
slowcase := false
for i = 0; i < len(line); i++ {
if line[i] == '\t' {
if prefix == i {
prefix++
} else {
slowcase = true
break
}
}
}
// no need to decode runes if all tabs are at the beginning of the line
if !slowcase {
for i = 0; i < prefix*tabSize; i++ {
out.WriteByte(' ')
}
out.Write(line[prefix:])
return
}
// the slow case: we need to count runes to figure out how
// many spaces to insert for each tab
column := 0
i = 0
for i < len(line) {
start := i
for i < len(line) && line[i] != '\t' {
_, size := utf8.DecodeRune(line[i:])
i += size
column++
}
if i > start {
out.Write(line[start:i])
}
if i >= len(line) {
break
}
for {
out.WriteByte(' ')
column++
if column%tabSize == 0 {
break
}
}
i++
}
}
// Find if a line counts as indented or not.
// Returns number of characters the indent is (0 = not indented).
func isIndented(data []byte, indentSize int) int {
if len(data) == 0 {
return 0
}
if data[0] == '\t' {
return 1
}
if len(data) < indentSize {
return 0
}
for i := 0; i < indentSize; i++ {
if data[i] != ' ' {
return 0
}
}
return indentSize
}
// Create a url-safe slug for fragments
func slugify(in []byte) []byte {
if len(in) == 0 {
return in
}
out := make([]byte, 0, len(in))
sym := false
for _, ch := range in {
if isalnum(ch) {
sym = false
out = append(out, ch)
} else if sym {
continue
} else {
out = append(out, '-')
sym = true
}
}
var a, b int
var ch byte
for a, ch = range out {
if ch != '-' {
break
}
}
for b = len(out) - 1; b > 0; b-- {
if out[b] != '-' {
break
}
}
return out[a : b+1]
}

360
tests/vendor/github.com/russross/blackfriday/v2/node.go generated vendored Normal file
View File

@ -0,0 +1,360 @@
package blackfriday
import (
"bytes"
"fmt"
)
// NodeType specifies a type of a single node of a syntax tree. Usually one
// node (and its type) corresponds to a single markdown feature, e.g. emphasis
// or code block.
type NodeType int
// Constants for identifying different types of nodes. See NodeType.
const (
Document NodeType = iota
BlockQuote
List
Item
Paragraph
Heading
HorizontalRule
Emph
Strong
Del
Link
Image
Text
HTMLBlock
CodeBlock
Softbreak
Hardbreak
Code
HTMLSpan
Table
TableCell
TableHead
TableBody
TableRow
)
var nodeTypeNames = []string{
Document: "Document",
BlockQuote: "BlockQuote",
List: "List",
Item: "Item",
Paragraph: "Paragraph",
Heading: "Heading",
HorizontalRule: "HorizontalRule",
Emph: "Emph",
Strong: "Strong",
Del: "Del",
Link: "Link",
Image: "Image",
Text: "Text",
HTMLBlock: "HTMLBlock",
CodeBlock: "CodeBlock",
Softbreak: "Softbreak",
Hardbreak: "Hardbreak",
Code: "Code",
HTMLSpan: "HTMLSpan",
Table: "Table",
TableCell: "TableCell",
TableHead: "TableHead",
TableBody: "TableBody",
TableRow: "TableRow",
}
func (t NodeType) String() string {
return nodeTypeNames[t]
}
// ListData contains fields relevant to a List and Item node type.
type ListData struct {
ListFlags ListType
Tight bool // Skip <p>s around list item data if true
BulletChar byte // '*', '+' or '-' in bullet lists
Delimiter byte // '.' or ')' after the number in ordered lists
RefLink []byte // If not nil, turns this list item into a footnote item and triggers different rendering
IsFootnotesList bool // This is a list of footnotes
}
// LinkData contains fields relevant to a Link node type.
type LinkData struct {
Destination []byte // Destination is what goes into a href
Title []byte // Title is the tooltip thing that goes in a title attribute
NoteID int // NoteID contains a serial number of a footnote, zero if it's not a footnote
Footnote *Node // If it's a footnote, this is a direct link to the footnote Node. Otherwise nil.
}
// CodeBlockData contains fields relevant to a CodeBlock node type.
type CodeBlockData struct {
IsFenced bool // Specifies whether it's a fenced code block or an indented one
Info []byte // This holds the info string
FenceChar byte
FenceLength int
FenceOffset int
}
// TableCellData contains fields relevant to a TableCell node type.
type TableCellData struct {
IsHeader bool // This tells if it's under the header row
Align CellAlignFlags // This holds the value for align attribute
}
// HeadingData contains fields relevant to a Heading node type.
type HeadingData struct {
Level int // This holds the heading level number
HeadingID string // This might hold heading ID, if present
IsTitleblock bool // Specifies whether it's a title block
}
// Node is a single element in the abstract syntax tree of the parsed document.
// It holds connections to the structurally neighboring nodes and, for certain
// types of nodes, additional information that might be needed when rendering.
type Node struct {
Type NodeType // Determines the type of the node
Parent *Node // Points to the parent
FirstChild *Node // Points to the first child, if any
LastChild *Node // Points to the last child, if any
Prev *Node // Previous sibling; nil if it's the first child
Next *Node // Next sibling; nil if it's the last child
Literal []byte // Text contents of the leaf nodes
HeadingData // Populated if Type is Heading
ListData // Populated if Type is List
CodeBlockData // Populated if Type is CodeBlock
LinkData // Populated if Type is Link
TableCellData // Populated if Type is TableCell
content []byte // Markdown content of the block nodes
open bool // Specifies an open block node that has not been finished to process yet
}
// NewNode allocates a node of a specified type.
func NewNode(typ NodeType) *Node {
return &Node{
Type: typ,
open: true,
}
}
func (n *Node) String() string {
ellipsis := ""
snippet := n.Literal
if len(snippet) > 16 {
snippet = snippet[:16]
ellipsis = "..."
}
return fmt.Sprintf("%s: '%s%s'", n.Type, snippet, ellipsis)
}
// Unlink removes node 'n' from the tree.
// It panics if the node is nil.
func (n *Node) Unlink() {
if n.Prev != nil {
n.Prev.Next = n.Next
} else if n.Parent != nil {
n.Parent.FirstChild = n.Next
}
if n.Next != nil {
n.Next.Prev = n.Prev
} else if n.Parent != nil {
n.Parent.LastChild = n.Prev
}
n.Parent = nil
n.Next = nil
n.Prev = nil
}
// AppendChild adds a node 'child' as a child of 'n'.
// It panics if either node is nil.
func (n *Node) AppendChild(child *Node) {
child.Unlink()
child.Parent = n
if n.LastChild != nil {
n.LastChild.Next = child
child.Prev = n.LastChild
n.LastChild = child
} else {
n.FirstChild = child
n.LastChild = child
}
}
// InsertBefore inserts 'sibling' immediately before 'n'.
// It panics if either node is nil.
func (n *Node) InsertBefore(sibling *Node) {
sibling.Unlink()
sibling.Prev = n.Prev
if sibling.Prev != nil {
sibling.Prev.Next = sibling
}
sibling.Next = n
n.Prev = sibling
sibling.Parent = n.Parent
if sibling.Prev == nil {
sibling.Parent.FirstChild = sibling
}
}
// IsContainer returns true if 'n' can contain children.
func (n *Node) IsContainer() bool {
switch n.Type {
case Document:
fallthrough
case BlockQuote:
fallthrough
case List:
fallthrough
case Item:
fallthrough
case Paragraph:
fallthrough
case Heading:
fallthrough
case Emph:
fallthrough
case Strong:
fallthrough
case Del:
fallthrough
case Link:
fallthrough
case Image:
fallthrough
case Table:
fallthrough
case TableHead:
fallthrough
case TableBody:
fallthrough
case TableRow:
fallthrough
case TableCell:
return true
default:
return false
}
}
// IsLeaf returns true if 'n' is a leaf node.
func (n *Node) IsLeaf() bool {
return !n.IsContainer()
}
func (n *Node) canContain(t NodeType) bool {
if n.Type == List {
return t == Item
}
if n.Type == Document || n.Type == BlockQuote || n.Type == Item {
return t != Item
}
if n.Type == Table {
return t == TableHead || t == TableBody
}
if n.Type == TableHead || n.Type == TableBody {
return t == TableRow
}
if n.Type == TableRow {
return t == TableCell
}
return false
}
// WalkStatus allows NodeVisitor to have some control over the tree traversal.
// It is returned from NodeVisitor and different values allow Node.Walk to
// decide which node to go to next.
type WalkStatus int
const (
// GoToNext is the default traversal of every node.
GoToNext WalkStatus = iota
// SkipChildren tells walker to skip all children of current node.
SkipChildren
// Terminate tells walker to terminate the traversal.
Terminate
)
// NodeVisitor is a callback to be called when traversing the syntax tree.
// Called twice for every node: once with entering=true when the branch is
// first visited, then with entering=false after all the children are done.
type NodeVisitor func(node *Node, entering bool) WalkStatus
// Walk is a convenience method that instantiates a walker and starts a
// traversal of subtree rooted at n.
func (n *Node) Walk(visitor NodeVisitor) {
w := newNodeWalker(n)
for w.current != nil {
status := visitor(w.current, w.entering)
switch status {
case GoToNext:
w.next()
case SkipChildren:
w.entering = false
w.next()
case Terminate:
return
}
}
}
type nodeWalker struct {
current *Node
root *Node
entering bool
}
func newNodeWalker(root *Node) *nodeWalker {
return &nodeWalker{
current: root,
root: root,
entering: true,
}
}
func (nw *nodeWalker) next() {
if (!nw.current.IsContainer() || !nw.entering) && nw.current == nw.root {
nw.current = nil
return
}
if nw.entering && nw.current.IsContainer() {
if nw.current.FirstChild != nil {
nw.current = nw.current.FirstChild
nw.entering = true
} else {
nw.entering = false
}
} else if nw.current.Next == nil {
nw.current = nw.current.Parent
nw.entering = false
} else {
nw.current = nw.current.Next
nw.entering = true
}
}
func dump(ast *Node) {
fmt.Println(dumpString(ast))
}
func dumpR(ast *Node, depth int) string {
if ast == nil {
return ""
}
indent := bytes.Repeat([]byte("\t"), depth)
content := ast.Literal
if content == nil {
content = ast.content
}
result := fmt.Sprintf("%s%s(%q)\n", indent, ast.Type, content)
for n := ast.FirstChild; n != nil; n = n.Next {
result += dumpR(n, depth+1)
}
return result
}
func dumpString(ast *Node) string {
return dumpR(ast, 0)
}

457
tests/vendor/github.com/russross/blackfriday/v2/smartypants.go generated vendored Normal file
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@ -0,0 +1,457 @@
//
// Blackfriday Markdown Processor
// Available at http://github.com/russross/blackfriday
//
// Copyright © 2011 Russ Ross <russ@russross.com>.
// Distributed under the Simplified BSD License.
// See README.md for details.
//
//
//
// SmartyPants rendering
//
//
package blackfriday
import (
"bytes"
"io"
)
// SPRenderer is a struct containing state of a Smartypants renderer.
type SPRenderer struct {
inSingleQuote bool
inDoubleQuote bool
callbacks [256]smartCallback
}
func wordBoundary(c byte) bool {
return c == 0 || isspace(c) || ispunct(c)
}
func tolower(c byte) byte {
if c >= 'A' && c <= 'Z' {
return c - 'A' + 'a'
}
return c
}
func isdigit(c byte) bool {
return c >= '0' && c <= '9'
}
func smartQuoteHelper(out *bytes.Buffer, previousChar byte, nextChar byte, quote byte, isOpen *bool, addNBSP bool) bool {
// edge of the buffer is likely to be a tag that we don't get to see,
// so we treat it like text sometimes
// enumerate all sixteen possibilities for (previousChar, nextChar)
// each can be one of {0, space, punct, other}
switch {
case previousChar == 0 && nextChar == 0:
// context is not any help here, so toggle
*isOpen = !*isOpen
case isspace(previousChar) && nextChar == 0:
// [ "] might be [ "<code>foo...]
*isOpen = true
case ispunct(previousChar) && nextChar == 0:
// [!"] hmm... could be [Run!"] or [("<code>...]
*isOpen = false
case /* isnormal(previousChar) && */ nextChar == 0:
// [a"] is probably a close
*isOpen = false
case previousChar == 0 && isspace(nextChar):
// [" ] might be [...foo</code>" ]
*isOpen = false
case isspace(previousChar) && isspace(nextChar):
// [ " ] context is not any help here, so toggle
*isOpen = !*isOpen
case ispunct(previousChar) && isspace(nextChar):
// [!" ] is probably a close
*isOpen = false
case /* isnormal(previousChar) && */ isspace(nextChar):
// [a" ] this is one of the easy cases
*isOpen = false
case previousChar == 0 && ispunct(nextChar):
// ["!] hmm... could be ["$1.95] or [</code>"!...]
*isOpen = false
case isspace(previousChar) && ispunct(nextChar):
// [ "!] looks more like [ "$1.95]
*isOpen = true
case ispunct(previousChar) && ispunct(nextChar):
// [!"!] context is not any help here, so toggle
*isOpen = !*isOpen
case /* isnormal(previousChar) && */ ispunct(nextChar):
// [a"!] is probably a close
*isOpen = false
case previousChar == 0 /* && isnormal(nextChar) */ :
// ["a] is probably an open
*isOpen = true
case isspace(previousChar) /* && isnormal(nextChar) */ :
// [ "a] this is one of the easy cases
*isOpen = true
case ispunct(previousChar) /* && isnormal(nextChar) */ :
// [!"a] is probably an open
*isOpen = true
default:
// [a'b] maybe a contraction?
*isOpen = false
}
// Note that with the limited lookahead, this non-breaking
// space will also be appended to single double quotes.
if addNBSP && !*isOpen {
out.WriteString("&nbsp;")
}
out.WriteByte('&')
if *isOpen {
out.WriteByte('l')
} else {
out.WriteByte('r')
}
out.WriteByte(quote)
out.WriteString("quo;")
if addNBSP && *isOpen {
out.WriteString("&nbsp;")
}
return true
}
func (r *SPRenderer) smartSingleQuote(out *bytes.Buffer, previousChar byte, text []byte) int {
if len(text) >= 2 {
t1 := tolower(text[1])
if t1 == '\'' {
nextChar := byte(0)
if len(text) >= 3 {
nextChar = text[2]
}
if smartQuoteHelper(out, previousChar, nextChar, 'd', &r.inDoubleQuote, false) {
return 1
}
}
if (t1 == 's' || t1 == 't' || t1 == 'm' || t1 == 'd') && (len(text) < 3 || wordBoundary(text[2])) {
out.WriteString("&rsquo;")
return 0
}
if len(text) >= 3 {
t2 := tolower(text[2])
if ((t1 == 'r' && t2 == 'e') || (t1 == 'l' && t2 == 'l') || (t1 == 'v' && t2 == 'e')) &&
(len(text) < 4 || wordBoundary(text[3])) {
out.WriteString("&rsquo;")
return 0
}
}
}
nextChar := byte(0)
if len(text) > 1 {
nextChar = text[1]
}
if smartQuoteHelper(out, previousChar, nextChar, 's', &r.inSingleQuote, false) {
return 0
}
out.WriteByte(text[0])
return 0
}
func (r *SPRenderer) smartParens(out *bytes.Buffer, previousChar byte, text []byte) int {
if len(text) >= 3 {
t1 := tolower(text[1])
t2 := tolower(text[2])
if t1 == 'c' && t2 == ')' {
out.WriteString("&copy;")
return 2
}
if t1 == 'r' && t2 == ')' {
out.WriteString("&reg;")
return 2
}
if len(text) >= 4 && t1 == 't' && t2 == 'm' && text[3] == ')' {
out.WriteString("&trade;")
return 3
}
}
out.WriteByte(text[0])
return 0
}
func (r *SPRenderer) smartDash(out *bytes.Buffer, previousChar byte, text []byte) int {
if len(text) >= 2 {
if text[1] == '-' {
out.WriteString("&mdash;")
return 1
}
if wordBoundary(previousChar) && wordBoundary(text[1]) {
out.WriteString("&ndash;")
return 0
}
}
out.WriteByte(text[0])
return 0
}
func (r *SPRenderer) smartDashLatex(out *bytes.Buffer, previousChar byte, text []byte) int {
if len(text) >= 3 && text[1] == '-' && text[2] == '-' {
out.WriteString("&mdash;")
return 2
}
if len(text) >= 2 && text[1] == '-' {
out.WriteString("&ndash;")
return 1
}
out.WriteByte(text[0])
return 0
}
func (r *SPRenderer) smartAmpVariant(out *bytes.Buffer, previousChar byte, text []byte, quote byte, addNBSP bool) int {
if bytes.HasPrefix(text, []byte("&quot;")) {
nextChar := byte(0)
if len(text) >= 7 {
nextChar = text[6]
}
if smartQuoteHelper(out, previousChar, nextChar, quote, &r.inDoubleQuote, addNBSP) {
return 5
}
}
if bytes.HasPrefix(text, []byte("&#0;")) {
return 3
}
out.WriteByte('&')
return 0
}
func (r *SPRenderer) smartAmp(angledQuotes, addNBSP bool) func(*bytes.Buffer, byte, []byte) int {
var quote byte = 'd'
if angledQuotes {
quote = 'a'
}
return func(out *bytes.Buffer, previousChar byte, text []byte) int {
return r.smartAmpVariant(out, previousChar, text, quote, addNBSP)
}
}
func (r *SPRenderer) smartPeriod(out *bytes.Buffer, previousChar byte, text []byte) int {
if len(text) >= 3 && text[1] == '.' && text[2] == '.' {
out.WriteString("&hellip;")
return 2
}
if len(text) >= 5 && text[1] == ' ' && text[2] == '.' && text[3] == ' ' && text[4] == '.' {
out.WriteString("&hellip;")
return 4
}
out.WriteByte(text[0])
return 0
}
func (r *SPRenderer) smartBacktick(out *bytes.Buffer, previousChar byte, text []byte) int {
if len(text) >= 2 && text[1] == '`' {
nextChar := byte(0)
if len(text) >= 3 {
nextChar = text[2]
}
if smartQuoteHelper(out, previousChar, nextChar, 'd', &r.inDoubleQuote, false) {
return 1
}
}
out.WriteByte(text[0])
return 0
}
func (r *SPRenderer) smartNumberGeneric(out *bytes.Buffer, previousChar byte, text []byte) int {
if wordBoundary(previousChar) && previousChar != '/' && len(text) >= 3 {
// is it of the form digits/digits(word boundary)?, i.e., \d+/\d+\b
// note: check for regular slash (/) or fraction slash (⁄, 0x2044, or 0xe2 81 84 in utf-8)
// and avoid changing dates like 1/23/2005 into fractions.
numEnd := 0
for len(text) > numEnd && isdigit(text[numEnd]) {
numEnd++
}
if numEnd == 0 {
out.WriteByte(text[0])
return 0
}
denStart := numEnd + 1
if len(text) > numEnd+3 && text[numEnd] == 0xe2 && text[numEnd+1] == 0x81 && text[numEnd+2] == 0x84 {
denStart = numEnd + 3
} else if len(text) < numEnd+2 || text[numEnd] != '/' {
out.WriteByte(text[0])
return 0
}
denEnd := denStart
for len(text) > denEnd && isdigit(text[denEnd]) {
denEnd++
}
if denEnd == denStart {
out.WriteByte(text[0])
return 0
}
if len(text) == denEnd || wordBoundary(text[denEnd]) && text[denEnd] != '/' {
out.WriteString("<sup>")
out.Write(text[:numEnd])
out.WriteString("</sup>&frasl;<sub>")
out.Write(text[denStart:denEnd])
out.WriteString("</sub>")
return denEnd - 1
}
}
out.WriteByte(text[0])
return 0
}
func (r *SPRenderer) smartNumber(out *bytes.Buffer, previousChar byte, text []byte) int {
if wordBoundary(previousChar) && previousChar != '/' && len(text) >= 3 {
if text[0] == '1' && text[1] == '/' && text[2] == '2' {
if len(text) < 4 || wordBoundary(text[3]) && text[3] != '/' {
out.WriteString("&frac12;")
return 2
}
}
if text[0] == '1' && text[1] == '/' && text[2] == '4' {
if len(text) < 4 || wordBoundary(text[3]) && text[3] != '/' || (len(text) >= 5 && tolower(text[3]) == 't' && tolower(text[4]) == 'h') {
out.WriteString("&frac14;")
return 2
}
}
if text[0] == '3' && text[1] == '/' && text[2] == '4' {
if len(text) < 4 || wordBoundary(text[3]) && text[3] != '/' || (len(text) >= 6 && tolower(text[3]) == 't' && tolower(text[4]) == 'h' && tolower(text[5]) == 's') {
out.WriteString("&frac34;")
return 2
}
}
}
out.WriteByte(text[0])
return 0
}
func (r *SPRenderer) smartDoubleQuoteVariant(out *bytes.Buffer, previousChar byte, text []byte, quote byte) int {
nextChar := byte(0)
if len(text) > 1 {
nextChar = text[1]
}
if !smartQuoteHelper(out, previousChar, nextChar, quote, &r.inDoubleQuote, false) {
out.WriteString("&quot;")
}
return 0
}
func (r *SPRenderer) smartDoubleQuote(out *bytes.Buffer, previousChar byte, text []byte) int {
return r.smartDoubleQuoteVariant(out, previousChar, text, 'd')
}
func (r *SPRenderer) smartAngledDoubleQuote(out *bytes.Buffer, previousChar byte, text []byte) int {
return r.smartDoubleQuoteVariant(out, previousChar, text, 'a')
}
func (r *SPRenderer) smartLeftAngle(out *bytes.Buffer, previousChar byte, text []byte) int {
i := 0
for i < len(text) && text[i] != '>' {
i++
}
out.Write(text[:i+1])
return i
}
type smartCallback func(out *bytes.Buffer, previousChar byte, text []byte) int
// NewSmartypantsRenderer constructs a Smartypants renderer object.
func NewSmartypantsRenderer(flags HTMLFlags) *SPRenderer {
var (
r SPRenderer
smartAmpAngled = r.smartAmp(true, false)
smartAmpAngledNBSP = r.smartAmp(true, true)
smartAmpRegular = r.smartAmp(false, false)
smartAmpRegularNBSP = r.smartAmp(false, true)
addNBSP = flags&SmartypantsQuotesNBSP != 0
)
if flags&SmartypantsAngledQuotes == 0 {
r.callbacks['"'] = r.smartDoubleQuote
if !addNBSP {
r.callbacks['&'] = smartAmpRegular
} else {
r.callbacks['&'] = smartAmpRegularNBSP
}
} else {
r.callbacks['"'] = r.smartAngledDoubleQuote
if !addNBSP {
r.callbacks['&'] = smartAmpAngled
} else {
r.callbacks['&'] = smartAmpAngledNBSP
}
}
r.callbacks['\''] = r.smartSingleQuote
r.callbacks['('] = r.smartParens
if flags&SmartypantsDashes != 0 {
if flags&SmartypantsLatexDashes == 0 {
r.callbacks['-'] = r.smartDash
} else {
r.callbacks['-'] = r.smartDashLatex
}
}
r.callbacks['.'] = r.smartPeriod
if flags&SmartypantsFractions == 0 {
r.callbacks['1'] = r.smartNumber
r.callbacks['3'] = r.smartNumber
} else {
for ch := '1'; ch <= '9'; ch++ {
r.callbacks[ch] = r.smartNumberGeneric
}
}
r.callbacks['<'] = r.smartLeftAngle
r.callbacks['`'] = r.smartBacktick
return &r
}
// Process is the entry point of the Smartypants renderer.
func (r *SPRenderer) Process(w io.Writer, text []byte) {
mark := 0
for i := 0; i < len(text); i++ {
if action := r.callbacks[text[i]]; action != nil {
if i > mark {
w.Write(text[mark:i])
}
previousChar := byte(0)
if i > 0 {
previousChar = text[i-1]
}
var tmp bytes.Buffer
i += action(&tmp, previousChar, text[i:])
w.Write(tmp.Bytes())
mark = i + 1
}
}
if mark < len(text) {
w.Write(text[mark:])
}
}

4
tests/vendor/github.com/sirupsen/logrus/.gitignore generated vendored Normal file
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@ -0,0 +1,4 @@
logrus
vendor
.idea/

40
tests/vendor/github.com/sirupsen/logrus/.golangci.yml generated vendored Normal file
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run:
# do not run on test files yet
tests: false
# all available settings of specific linters
linters-settings:
errcheck:
# report about not checking of errors in type assetions: `a := b.(MyStruct)`;
# default is false: such cases aren't reported by default.
check-type-assertions: false
# report about assignment of errors to blank identifier: `num, _ := strconv.Atoi(numStr)`;
# default is false: such cases aren't reported by default.
check-blank: false
lll:
line-length: 100
tab-width: 4
prealloc:
simple: false
range-loops: false
for-loops: false
whitespace:
multi-if: false # Enforces newlines (or comments) after every multi-line if statement
multi-func: false # Enforces newlines (or comments) after every multi-line function signature
linters:
enable:
- megacheck
- govet
disable:
- maligned
- prealloc
disable-all: false
presets:
- bugs
- unused
fast: false

15
tests/vendor/github.com/sirupsen/logrus/.travis.yml generated vendored Normal file
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@ -0,0 +1,15 @@
language: go
go_import_path: github.com/sirupsen/logrus
git:
depth: 1
env:
- GO111MODULE=on
go: 1.15.x
os: linux
install:
- ./travis/install.sh
script:
- cd ci
- go run mage.go -v -w ../ crossBuild
- go run mage.go -v -w ../ lint
- go run mage.go -v -w ../ test

259
tests/vendor/github.com/sirupsen/logrus/CHANGELOG.md generated vendored Normal file
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# 1.8.1
Code quality:
* move magefile in its own subdir/submodule to remove magefile dependency on logrus consumer
* improve timestamp format documentation
Fixes:
* fix race condition on logger hooks
# 1.8.0
Correct versioning number replacing v1.7.1.
# 1.7.1
Beware this release has introduced a new public API and its semver is therefore incorrect.
Code quality:
* use go 1.15 in travis
* use magefile as task runner
Fixes:
* small fixes about new go 1.13 error formatting system
* Fix for long time race condiction with mutating data hooks
Features:
* build support for zos
# 1.7.0
Fixes:
* the dependency toward a windows terminal library has been removed
Features:
* a new buffer pool management API has been added
* a set of `<LogLevel>Fn()` functions have been added
# 1.6.0
Fixes:
* end of line cleanup
* revert the entry concurrency bug fix whic leads to deadlock under some circumstances
* update dependency on go-windows-terminal-sequences to fix a crash with go 1.14
Features:
* add an option to the `TextFormatter` to completely disable fields quoting
# 1.5.0
Code quality:
* add golangci linter run on travis
Fixes:
* add mutex for hooks concurrent access on `Entry` data
* caller function field for go1.14
* fix build issue for gopherjs target
Feature:
* add an hooks/writer sub-package whose goal is to split output on different stream depending on the trace level
* add a `DisableHTMLEscape` option in the `JSONFormatter`
* add `ForceQuote` and `PadLevelText` options in the `TextFormatter`
# 1.4.2
* Fixes build break for plan9, nacl, solaris
# 1.4.1
This new release introduces:
* Enhance TextFormatter to not print caller information when they are empty (#944)
* Remove dependency on golang.org/x/crypto (#932, #943)
Fixes:
* Fix Entry.WithContext method to return a copy of the initial entry (#941)
# 1.4.0
This new release introduces:
* Add `DeferExitHandler`, similar to `RegisterExitHandler` but prepending the handler to the list of handlers (semantically like `defer`) (#848).
* Add `CallerPrettyfier` to `JSONFormatter` and `TextFormatter` (#909, #911)
* Add `Entry.WithContext()` and `Entry.Context`, to set a context on entries to be used e.g. in hooks (#919).
Fixes:
* Fix wrong method calls `Logger.Print` and `Logger.Warningln` (#893).
* Update `Entry.Logf` to not do string formatting unless the log level is enabled (#903)
* Fix infinite recursion on unknown `Level.String()` (#907)
* Fix race condition in `getCaller` (#916).
# 1.3.0
This new release introduces:
* Log, Logf, Logln functions for Logger and Entry that take a Level
Fixes:
* Building prometheus node_exporter on AIX (#840)
* Race condition in TextFormatter (#468)
* Travis CI import path (#868)
* Remove coloured output on Windows (#862)
* Pointer to func as field in JSONFormatter (#870)
* Properly marshal Levels (#873)
# 1.2.0
This new release introduces:
* A new method `SetReportCaller` in the `Logger` to enable the file, line and calling function from which the trace has been issued
* A new trace level named `Trace` whose level is below `Debug`
* A configurable exit function to be called upon a Fatal trace
* The `Level` object now implements `encoding.TextUnmarshaler` interface
# 1.1.1
This is a bug fix release.
* fix the build break on Solaris
* don't drop a whole trace in JSONFormatter when a field param is a function pointer which can not be serialized
# 1.1.0
This new release introduces:
* several fixes:
* a fix for a race condition on entry formatting
* proper cleanup of previously used entries before putting them back in the pool
* the extra new line at the end of message in text formatter has been removed
* a new global public API to check if a level is activated: IsLevelEnabled
* the following methods have been added to the Logger object
* IsLevelEnabled
* SetFormatter
* SetOutput
* ReplaceHooks
* introduction of go module
* an indent configuration for the json formatter
* output colour support for windows
* the field sort function is now configurable for text formatter
* the CLICOLOR and CLICOLOR\_FORCE environment variable support in text formater
# 1.0.6
This new release introduces:
* a new api WithTime which allows to easily force the time of the log entry
which is mostly useful for logger wrapper
* a fix reverting the immutability of the entry given as parameter to the hooks
a new configuration field of the json formatter in order to put all the fields
in a nested dictionnary
* a new SetOutput method in the Logger
* a new configuration of the textformatter to configure the name of the default keys
* a new configuration of the text formatter to disable the level truncation
# 1.0.5
* Fix hooks race (#707)
* Fix panic deadlock (#695)
# 1.0.4
* Fix race when adding hooks (#612)
* Fix terminal check in AppEngine (#635)
# 1.0.3
* Replace example files with testable examples
# 1.0.2
* bug: quote non-string values in text formatter (#583)
* Make (*Logger) SetLevel a public method
# 1.0.1
* bug: fix escaping in text formatter (#575)
# 1.0.0
* Officially changed name to lower-case
* bug: colors on Windows 10 (#541)
* bug: fix race in accessing level (#512)
# 0.11.5
* feature: add writer and writerlevel to entry (#372)
# 0.11.4
* bug: fix undefined variable on solaris (#493)
# 0.11.3
* formatter: configure quoting of empty values (#484)
* formatter: configure quoting character (default is `"`) (#484)
* bug: fix not importing io correctly in non-linux environments (#481)
# 0.11.2
* bug: fix windows terminal detection (#476)
# 0.11.1
* bug: fix tty detection with custom out (#471)
# 0.11.0
* performance: Use bufferpool to allocate (#370)
* terminal: terminal detection for app-engine (#343)
* feature: exit handler (#375)
# 0.10.0
* feature: Add a test hook (#180)
* feature: `ParseLevel` is now case-insensitive (#326)
* feature: `FieldLogger` interface that generalizes `Logger` and `Entry` (#308)
* performance: avoid re-allocations on `WithFields` (#335)
# 0.9.0
* logrus/text_formatter: don't emit empty msg
* logrus/hooks/airbrake: move out of main repository
* logrus/hooks/sentry: move out of main repository
* logrus/hooks/papertrail: move out of main repository
* logrus/hooks/bugsnag: move out of main repository
* logrus/core: run tests with `-race`
* logrus/core: detect TTY based on `stderr`
* logrus/core: support `WithError` on logger
* logrus/core: Solaris support
# 0.8.7
* logrus/core: fix possible race (#216)
* logrus/doc: small typo fixes and doc improvements
# 0.8.6
* hooks/raven: allow passing an initialized client
# 0.8.5
* logrus/core: revert #208
# 0.8.4
* formatter/text: fix data race (#218)
# 0.8.3
* logrus/core: fix entry log level (#208)
* logrus/core: improve performance of text formatter by 40%
* logrus/core: expose `LevelHooks` type
* logrus/core: add support for DragonflyBSD and NetBSD
* formatter/text: print structs more verbosely
# 0.8.2
* logrus: fix more Fatal family functions
# 0.8.1
* logrus: fix not exiting on `Fatalf` and `Fatalln`
# 0.8.0
* logrus: defaults to stderr instead of stdout
* hooks/sentry: add special field for `*http.Request`
* formatter/text: ignore Windows for colors
# 0.7.3
* formatter/\*: allow configuration of timestamp layout
# 0.7.2
* formatter/text: Add configuration option for time format (#158)

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The MIT License (MIT)
Copyright (c) 2014 Simon Eskildsen
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.

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# Logrus <img src="http://i.imgur.com/hTeVwmJ.png" width="40" height="40" alt=":walrus:" class="emoji" title=":walrus:"/> [![Build Status](https://travis-ci.org/sirupsen/logrus.svg?branch=master)](https://travis-ci.org/sirupsen/logrus) [![GoDoc](https://godoc.org/github.com/sirupsen/logrus?status.svg)](https://godoc.org/github.com/sirupsen/logrus)
Logrus is a structured logger for Go (golang), completely API compatible with
the standard library logger.
**Logrus is in maintenance-mode.** We will not be introducing new features. It's
simply too hard to do in a way that won't break many people's projects, which is
the last thing you want from your Logging library (again...).
This does not mean Logrus is dead. Logrus will continue to be maintained for
security, (backwards compatible) bug fixes, and performance (where we are
limited by the interface).
I believe Logrus' biggest contribution is to have played a part in today's
widespread use of structured logging in Golang. There doesn't seem to be a
reason to do a major, breaking iteration into Logrus V2, since the fantastic Go
community has built those independently. Many fantastic alternatives have sprung
up. Logrus would look like those, had it been re-designed with what we know
about structured logging in Go today. Check out, for example,
[Zerolog][zerolog], [Zap][zap], and [Apex][apex].
[zerolog]: https://github.com/rs/zerolog
[zap]: https://github.com/uber-go/zap
[apex]: https://github.com/apex/log
**Seeing weird case-sensitive problems?** It's in the past been possible to
import Logrus as both upper- and lower-case. Due to the Go package environment,
this caused issues in the community and we needed a standard. Some environments
experienced problems with the upper-case variant, so the lower-case was decided.
Everything using `logrus` will need to use the lower-case:
`github.com/sirupsen/logrus`. Any package that isn't, should be changed.
To fix Glide, see [these
comments](https://github.com/sirupsen/logrus/issues/553#issuecomment-306591437).
For an in-depth explanation of the casing issue, see [this
comment](https://github.com/sirupsen/logrus/issues/570#issuecomment-313933276).
Nicely color-coded in development (when a TTY is attached, otherwise just
plain text):
![Colored](http://i.imgur.com/PY7qMwd.png)
With `log.SetFormatter(&log.JSONFormatter{})`, for easy parsing by logstash
or Splunk:
```json
{"animal":"walrus","level":"info","msg":"A group of walrus emerges from the
ocean","size":10,"time":"2014-03-10 19:57:38.562264131 -0400 EDT"}
{"level":"warning","msg":"The group's number increased tremendously!",
"number":122,"omg":true,"time":"2014-03-10 19:57:38.562471297 -0400 EDT"}
{"animal":"walrus","level":"info","msg":"A giant walrus appears!",
"size":10,"time":"2014-03-10 19:57:38.562500591 -0400 EDT"}
{"animal":"walrus","level":"info","msg":"Tremendously sized cow enters the ocean.",
"size":9,"time":"2014-03-10 19:57:38.562527896 -0400 EDT"}
{"level":"fatal","msg":"The ice breaks!","number":100,"omg":true,
"time":"2014-03-10 19:57:38.562543128 -0400 EDT"}
```
With the default `log.SetFormatter(&log.TextFormatter{})` when a TTY is not
attached, the output is compatible with the
[logfmt](http://godoc.org/github.com/kr/logfmt) format:
```text
time="2015-03-26T01:27:38-04:00" level=debug msg="Started observing beach" animal=walrus number=8
time="2015-03-26T01:27:38-04:00" level=info msg="A group of walrus emerges from the ocean" animal=walrus size=10
time="2015-03-26T01:27:38-04:00" level=warning msg="The group's number increased tremendously!" number=122 omg=true
time="2015-03-26T01:27:38-04:00" level=debug msg="Temperature changes" temperature=-4
time="2015-03-26T01:27:38-04:00" level=panic msg="It's over 9000!" animal=orca size=9009
time="2015-03-26T01:27:38-04:00" level=fatal msg="The ice breaks!" err=&{0x2082280c0 map[animal:orca size:9009] 2015-03-26 01:27:38.441574009 -0400 EDT panic It's over 9000!} number=100 omg=true
```
To ensure this behaviour even if a TTY is attached, set your formatter as follows:
```go
log.SetFormatter(&log.TextFormatter{
DisableColors: true,
FullTimestamp: true,
})
```
#### Logging Method Name
If you wish to add the calling method as a field, instruct the logger via:
```go
log.SetReportCaller(true)
```
This adds the caller as 'method' like so:
```json
{"animal":"penguin","level":"fatal","method":"github.com/sirupsen/arcticcreatures.migrate","msg":"a penguin swims by",
"time":"2014-03-10 19:57:38.562543129 -0400 EDT"}
```
```text
time="2015-03-26T01:27:38-04:00" level=fatal method=github.com/sirupsen/arcticcreatures.migrate msg="a penguin swims by" animal=penguin
```
Note that this does add measurable overhead - the cost will depend on the version of Go, but is
between 20 and 40% in recent tests with 1.6 and 1.7. You can validate this in your
environment via benchmarks:
```
go test -bench=.*CallerTracing
```
#### Case-sensitivity
The organization's name was changed to lower-case--and this will not be changed
back. If you are getting import conflicts due to case sensitivity, please use
the lower-case import: `github.com/sirupsen/logrus`.
#### Example
The simplest way to use Logrus is simply the package-level exported logger:
```go
package main
import (
log "github.com/sirupsen/logrus"
)
func main() {
log.WithFields(log.Fields{
"animal": "walrus",
}).Info("A walrus appears")
}
```
Note that it's completely api-compatible with the stdlib logger, so you can
replace your `log` imports everywhere with `log "github.com/sirupsen/logrus"`
and you'll now have the flexibility of Logrus. You can customize it all you
want:
```go
package main
import (
"os"
log "github.com/sirupsen/logrus"
)
func init() {
// Log as JSON instead of the default ASCII formatter.
log.SetFormatter(&log.JSONFormatter{})
// Output to stdout instead of the default stderr
// Can be any io.Writer, see below for File example
log.SetOutput(os.Stdout)
// Only log the warning severity or above.
log.SetLevel(log.WarnLevel)
}
func main() {
log.WithFields(log.Fields{
"animal": "walrus",
"size": 10,
}).Info("A group of walrus emerges from the ocean")
log.WithFields(log.Fields{
"omg": true,
"number": 122,
}).Warn("The group's number increased tremendously!")
log.WithFields(log.Fields{
"omg": true,
"number": 100,
}).Fatal("The ice breaks!")
// A common pattern is to re-use fields between logging statements by re-using
// the logrus.Entry returned from WithFields()
contextLogger := log.WithFields(log.Fields{
"common": "this is a common field",
"other": "I also should be logged always",
})
contextLogger.Info("I'll be logged with common and other field")
contextLogger.Info("Me too")
}
```
For more advanced usage such as logging to multiple locations from the same
application, you can also create an instance of the `logrus` Logger:
```go
package main
import (
"os"
"github.com/sirupsen/logrus"
)
// Create a new instance of the logger. You can have any number of instances.
var log = logrus.New()
func main() {
// The API for setting attributes is a little different than the package level
// exported logger. See Godoc.
log.Out = os.Stdout
// You could set this to any `io.Writer` such as a file
// file, err := os.OpenFile("logrus.log", os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0666)
// if err == nil {
// log.Out = file
// } else {
// log.Info("Failed to log to file, using default stderr")
// }
log.WithFields(logrus.Fields{
"animal": "walrus",
"size": 10,
}).Info("A group of walrus emerges from the ocean")
}
```
#### Fields
Logrus encourages careful, structured logging through logging fields instead of
long, unparseable error messages. For example, instead of: `log.Fatalf("Failed
to send event %s to topic %s with key %d")`, you should log the much more
discoverable:
```go
log.WithFields(log.Fields{
"event": event,
"topic": topic,
"key": key,
}).Fatal("Failed to send event")
```
We've found this API forces you to think about logging in a way that produces
much more useful logging messages. We've been in countless situations where just
a single added field to a log statement that was already there would've saved us
hours. The `WithFields` call is optional.
In general, with Logrus using any of the `printf`-family functions should be
seen as a hint you should add a field, however, you can still use the
`printf`-family functions with Logrus.
#### Default Fields
Often it's helpful to have fields _always_ attached to log statements in an
application or parts of one. For example, you may want to always log the
`request_id` and `user_ip` in the context of a request. Instead of writing
`log.WithFields(log.Fields{"request_id": request_id, "user_ip": user_ip})` on
every line, you can create a `logrus.Entry` to pass around instead:
```go
requestLogger := log.WithFields(log.Fields{"request_id": request_id, "user_ip": user_ip})
requestLogger.Info("something happened on that request") # will log request_id and user_ip
requestLogger.Warn("something not great happened")
```
#### Hooks
You can add hooks for logging levels. For example to send errors to an exception
tracking service on `Error`, `Fatal` and `Panic`, info to StatsD or log to
multiple places simultaneously, e.g. syslog.
Logrus comes with [built-in hooks](hooks/). Add those, or your custom hook, in
`init`:
```go
import (
log "github.com/sirupsen/logrus"
"gopkg.in/gemnasium/logrus-airbrake-hook.v2" // the package is named "airbrake"
logrus_syslog "github.com/sirupsen/logrus/hooks/syslog"
"log/syslog"
)
func init() {
// Use the Airbrake hook to report errors that have Error severity or above to
// an exception tracker. You can create custom hooks, see the Hooks section.
log.AddHook(airbrake.NewHook(123, "xyz", "production"))
hook, err := logrus_syslog.NewSyslogHook("udp", "localhost:514", syslog.LOG_INFO, "")
if err != nil {
log.Error("Unable to connect to local syslog daemon")
} else {
log.AddHook(hook)
}
}
```
Note: Syslog hook also support connecting to local syslog (Ex. "/dev/log" or "/var/run/syslog" or "/var/run/log"). For the detail, please check the [syslog hook README](hooks/syslog/README.md).
A list of currently known service hooks can be found in this wiki [page](https://github.com/sirupsen/logrus/wiki/Hooks)
#### Level logging
Logrus has seven logging levels: Trace, Debug, Info, Warning, Error, Fatal and Panic.
```go
log.Trace("Something very low level.")
log.Debug("Useful debugging information.")
log.Info("Something noteworthy happened!")
log.Warn("You should probably take a look at this.")
log.Error("Something failed but I'm not quitting.")
// Calls os.Exit(1) after logging
log.Fatal("Bye.")
// Calls panic() after logging
log.Panic("I'm bailing.")
```
You can set the logging level on a `Logger`, then it will only log entries with
that severity or anything above it:
```go
// Will log anything that is info or above (warn, error, fatal, panic). Default.
log.SetLevel(log.InfoLevel)
```
It may be useful to set `log.Level = logrus.DebugLevel` in a debug or verbose
environment if your application has that.
#### Entries
Besides the fields added with `WithField` or `WithFields` some fields are
automatically added to all logging events:
1. `time`. The timestamp when the entry was created.
2. `msg`. The logging message passed to `{Info,Warn,Error,Fatal,Panic}` after
the `AddFields` call. E.g. `Failed to send event.`
3. `level`. The logging level. E.g. `info`.
#### Environments
Logrus has no notion of environment.
If you wish for hooks and formatters to only be used in specific environments,
you should handle that yourself. For example, if your application has a global
variable `Environment`, which is a string representation of the environment you
could do:
```go
import (
log "github.com/sirupsen/logrus"
)
init() {
// do something here to set environment depending on an environment variable
// or command-line flag
if Environment == "production" {
log.SetFormatter(&log.JSONFormatter{})
} else {
// The TextFormatter is default, you don't actually have to do this.
log.SetFormatter(&log.TextFormatter{})
}
}
```
This configuration is how `logrus` was intended to be used, but JSON in
production is mostly only useful if you do log aggregation with tools like
Splunk or Logstash.
#### Formatters
The built-in logging formatters are:
* `logrus.TextFormatter`. Logs the event in colors if stdout is a tty, otherwise
without colors.
* *Note:* to force colored output when there is no TTY, set the `ForceColors`
field to `true`. To force no colored output even if there is a TTY set the
`DisableColors` field to `true`. For Windows, see
[github.com/mattn/go-colorable](https://github.com/mattn/go-colorable).
* When colors are enabled, levels are truncated to 4 characters by default. To disable
truncation set the `DisableLevelTruncation` field to `true`.
* When outputting to a TTY, it's often helpful to visually scan down a column where all the levels are the same width. Setting the `PadLevelText` field to `true` enables this behavior, by adding padding to the level text.
* All options are listed in the [generated docs](https://godoc.org/github.com/sirupsen/logrus#TextFormatter).
* `logrus.JSONFormatter`. Logs fields as JSON.
* All options are listed in the [generated docs](https://godoc.org/github.com/sirupsen/logrus#JSONFormatter).
Third party logging formatters:
* [`FluentdFormatter`](https://github.com/joonix/log). Formats entries that can be parsed by Kubernetes and Google Container Engine.
* [`GELF`](https://github.com/fabienm/go-logrus-formatters). Formats entries so they comply to Graylog's [GELF 1.1 specification](http://docs.graylog.org/en/2.4/pages/gelf.html).
* [`logstash`](https://github.com/bshuster-repo/logrus-logstash-hook). Logs fields as [Logstash](http://logstash.net) Events.
* [`prefixed`](https://github.com/x-cray/logrus-prefixed-formatter). Displays log entry source along with alternative layout.
* [`zalgo`](https://github.com/aybabtme/logzalgo). Invoking the Power of Zalgo.
* [`nested-logrus-formatter`](https://github.com/antonfisher/nested-logrus-formatter). Converts logrus fields to a nested structure.
* [`powerful-logrus-formatter`](https://github.com/zput/zxcTool). get fileName, log's line number and the latest function's name when print log; Sava log to files.
* [`caption-json-formatter`](https://github.com/nolleh/caption_json_formatter). logrus's message json formatter with human-readable caption added.
You can define your formatter by implementing the `Formatter` interface,
requiring a `Format` method. `Format` takes an `*Entry`. `entry.Data` is a
`Fields` type (`map[string]interface{}`) with all your fields as well as the
default ones (see Entries section above):
```go
type MyJSONFormatter struct {
}
log.SetFormatter(new(MyJSONFormatter))
func (f *MyJSONFormatter) Format(entry *Entry) ([]byte, error) {
// Note this doesn't include Time, Level and Message which are available on
// the Entry. Consult `godoc` on information about those fields or read the
// source of the official loggers.
serialized, err := json.Marshal(entry.Data)
if err != nil {
return nil, fmt.Errorf("Failed to marshal fields to JSON, %w", err)
}
return append(serialized, '\n'), nil
}
```
#### Logger as an `io.Writer`
Logrus can be transformed into an `io.Writer`. That writer is the end of an `io.Pipe` and it is your responsibility to close it.
```go
w := logger.Writer()
defer w.Close()
srv := http.Server{
// create a stdlib log.Logger that writes to
// logrus.Logger.
ErrorLog: log.New(w, "", 0),
}
```
Each line written to that writer will be printed the usual way, using formatters
and hooks. The level for those entries is `info`.
This means that we can override the standard library logger easily:
```go
logger := logrus.New()
logger.Formatter = &logrus.JSONFormatter{}
// Use logrus for standard log output
// Note that `log` here references stdlib's log
// Not logrus imported under the name `log`.
log.SetOutput(logger.Writer())
```
#### Rotation
Log rotation is not provided with Logrus. Log rotation should be done by an
external program (like `logrotate(8)`) that can compress and delete old log
entries. It should not be a feature of the application-level logger.
#### Tools
| Tool | Description |
| ---- | ----------- |
|[Logrus Mate](https://github.com/gogap/logrus_mate)|Logrus mate is a tool for Logrus to manage loggers, you can initial logger's level, hook and formatter by config file, the logger will be generated with different configs in different environments.|
|[Logrus Viper Helper](https://github.com/heirko/go-contrib/tree/master/logrusHelper)|An Helper around Logrus to wrap with spf13/Viper to load configuration with fangs! And to simplify Logrus configuration use some behavior of [Logrus Mate](https://github.com/gogap/logrus_mate). [sample](https://github.com/heirko/iris-contrib/blob/master/middleware/logrus-logger/example) |
#### Testing
Logrus has a built in facility for asserting the presence of log messages. This is implemented through the `test` hook and provides:
* decorators for existing logger (`test.NewLocal` and `test.NewGlobal`) which basically just adds the `test` hook
* a test logger (`test.NewNullLogger`) that just records log messages (and does not output any):
```go
import(
"github.com/sirupsen/logrus"
"github.com/sirupsen/logrus/hooks/test"
"github.com/stretchr/testify/assert"
"testing"
)
func TestSomething(t*testing.T){
logger, hook := test.NewNullLogger()
logger.Error("Helloerror")
assert.Equal(t, 1, len(hook.Entries))
assert.Equal(t, logrus.ErrorLevel, hook.LastEntry().Level)
assert.Equal(t, "Helloerror", hook.LastEntry().Message)
hook.Reset()
assert.Nil(t, hook.LastEntry())
}
```
#### Fatal handlers
Logrus can register one or more functions that will be called when any `fatal`
level message is logged. The registered handlers will be executed before
logrus performs an `os.Exit(1)`. This behavior may be helpful if callers need
to gracefully shutdown. Unlike a `panic("Something went wrong...")` call which can be intercepted with a deferred `recover` a call to `os.Exit(1)` can not be intercepted.
```
...
handler := func() {
// gracefully shutdown something...
}
logrus.RegisterExitHandler(handler)
...
```
#### Thread safety
By default, Logger is protected by a mutex for concurrent writes. The mutex is held when calling hooks and writing logs.
If you are sure such locking is not needed, you can call logger.SetNoLock() to disable the locking.
Situation when locking is not needed includes:
* You have no hooks registered, or hooks calling is already thread-safe.
* Writing to logger.Out is already thread-safe, for example:
1) logger.Out is protected by locks.
2) logger.Out is an os.File handler opened with `O_APPEND` flag, and every write is smaller than 4k. (This allows multi-thread/multi-process writing)
(Refer to http://www.notthewizard.com/2014/06/17/are-files-appends-really-atomic/)

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package logrus
// The following code was sourced and modified from the
// https://github.com/tebeka/atexit package governed by the following license:
//
// Copyright (c) 2012 Miki Tebeka <miki.tebeka@gmail.com>.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy of
// this software and associated documentation files (the "Software"), to deal in
// the Software without restriction, including without limitation the rights to
// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
// the Software, and to permit persons to whom the Software is furnished to do so,
// subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
// FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
// COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
// IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
import (
"fmt"
"os"
)
var handlers = []func(){}
func runHandler(handler func()) {
defer func() {
if err := recover(); err != nil {
fmt.Fprintln(os.Stderr, "Error: Logrus exit handler error:", err)
}
}()
handler()
}
func runHandlers() {
for _, handler := range handlers {
runHandler(handler)
}
}
// Exit runs all the Logrus atexit handlers and then terminates the program using os.Exit(code)
func Exit(code int) {
runHandlers()
os.Exit(code)
}
// RegisterExitHandler appends a Logrus Exit handler to the list of handlers,
// call logrus.Exit to invoke all handlers. The handlers will also be invoked when
// any Fatal log entry is made.
//
// This method is useful when a caller wishes to use logrus to log a fatal
// message but also needs to gracefully shutdown. An example usecase could be
// closing database connections, or sending a alert that the application is
// closing.
func RegisterExitHandler(handler func()) {
handlers = append(handlers, handler)
}
// DeferExitHandler prepends a Logrus Exit handler to the list of handlers,
// call logrus.Exit to invoke all handlers. The handlers will also be invoked when
// any Fatal log entry is made.
//
// This method is useful when a caller wishes to use logrus to log a fatal
// message but also needs to gracefully shutdown. An example usecase could be
// closing database connections, or sending a alert that the application is
// closing.
func DeferExitHandler(handler func()) {
handlers = append([]func(){handler}, handlers...)
}

14
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@ -0,0 +1,14 @@
version: "{build}"
platform: x64
clone_folder: c:\gopath\src\github.com\sirupsen\logrus
environment:
GOPATH: c:\gopath
branches:
only:
- master
install:
- set PATH=%GOPATH%\bin;c:\go\bin;%PATH%
- go version
build_script:
- go get -t
- go test

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@ -0,0 +1,52 @@
package logrus
import (
"bytes"
"sync"
)
var (
bufferPool BufferPool
)
type BufferPool interface {
Put(*bytes.Buffer)
Get() *bytes.Buffer
}
type defaultPool struct {
pool *sync.Pool
}
func (p *defaultPool) Put(buf *bytes.Buffer) {
p.pool.Put(buf)
}
func (p *defaultPool) Get() *bytes.Buffer {
return p.pool.Get().(*bytes.Buffer)
}
func getBuffer() *bytes.Buffer {
return bufferPool.Get()
}
func putBuffer(buf *bytes.Buffer) {
buf.Reset()
bufferPool.Put(buf)
}
// SetBufferPool allows to replace the default logrus buffer pool
// to better meets the specific needs of an application.
func SetBufferPool(bp BufferPool) {
bufferPool = bp
}
func init() {
SetBufferPool(&defaultPool{
pool: &sync.Pool{
New: func() interface{} {
return new(bytes.Buffer)
},
},
})
}

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/*
Package logrus is a structured logger for Go, completely API compatible with the standard library logger.
The simplest way to use Logrus is simply the package-level exported logger:
package main
import (
log "github.com/sirupsen/logrus"
)
func main() {
log.WithFields(log.Fields{
"animal": "walrus",
"number": 1,
"size": 10,
}).Info("A walrus appears")
}
Output:
time="2015-09-07T08:48:33Z" level=info msg="A walrus appears" animal=walrus number=1 size=10
For a full guide visit https://github.com/sirupsen/logrus
*/
package logrus

431
tests/vendor/github.com/sirupsen/logrus/entry.go generated vendored Normal file
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package logrus
import (
"bytes"
"context"
"fmt"
"os"
"reflect"
"runtime"
"strings"
"sync"
"time"
)
var (
// qualified package name, cached at first use
logrusPackage string
// Positions in the call stack when tracing to report the calling method
minimumCallerDepth int
// Used for caller information initialisation
callerInitOnce sync.Once
)
const (
maximumCallerDepth int = 25
knownLogrusFrames int = 4
)
func init() {
// start at the bottom of the stack before the package-name cache is primed
minimumCallerDepth = 1
}
// Defines the key when adding errors using WithError.
var ErrorKey = "error"
// An entry is the final or intermediate Logrus logging entry. It contains all
// the fields passed with WithField{,s}. It's finally logged when Trace, Debug,
// Info, Warn, Error, Fatal or Panic is called on it. These objects can be
// reused and passed around as much as you wish to avoid field duplication.
type Entry struct {
Logger *Logger
// Contains all the fields set by the user.
Data Fields
// Time at which the log entry was created
Time time.Time
// Level the log entry was logged at: Trace, Debug, Info, Warn, Error, Fatal or Panic
// This field will be set on entry firing and the value will be equal to the one in Logger struct field.
Level Level
// Calling method, with package name
Caller *runtime.Frame
// Message passed to Trace, Debug, Info, Warn, Error, Fatal or Panic
Message string
// When formatter is called in entry.log(), a Buffer may be set to entry
Buffer *bytes.Buffer
// Contains the context set by the user. Useful for hook processing etc.
Context context.Context
// err may contain a field formatting error
err string
}
func NewEntry(logger *Logger) *Entry {
return &Entry{
Logger: logger,
// Default is three fields, plus one optional. Give a little extra room.
Data: make(Fields, 6),
}
}
func (entry *Entry) Dup() *Entry {
data := make(Fields, len(entry.Data))
for k, v := range entry.Data {
data[k] = v
}
return &Entry{Logger: entry.Logger, Data: data, Time: entry.Time, Context: entry.Context, err: entry.err}
}
// Returns the bytes representation of this entry from the formatter.
func (entry *Entry) Bytes() ([]byte, error) {
return entry.Logger.Formatter.Format(entry)
}
// Returns the string representation from the reader and ultimately the
// formatter.
func (entry *Entry) String() (string, error) {
serialized, err := entry.Bytes()
if err != nil {
return "", err
}
str := string(serialized)
return str, nil
}
// Add an error as single field (using the key defined in ErrorKey) to the Entry.
func (entry *Entry) WithError(err error) *Entry {
return entry.WithField(ErrorKey, err)
}
// Add a context to the Entry.
func (entry *Entry) WithContext(ctx context.Context) *Entry {
dataCopy := make(Fields, len(entry.Data))
for k, v := range entry.Data {
dataCopy[k] = v
}
return &Entry{Logger: entry.Logger, Data: dataCopy, Time: entry.Time, err: entry.err, Context: ctx}
}
// Add a single field to the Entry.
func (entry *Entry) WithField(key string, value interface{}) *Entry {
return entry.WithFields(Fields{key: value})
}
// Add a map of fields to the Entry.
func (entry *Entry) WithFields(fields Fields) *Entry {
data := make(Fields, len(entry.Data)+len(fields))
for k, v := range entry.Data {
data[k] = v
}
fieldErr := entry.err
for k, v := range fields {
isErrField := false
if t := reflect.TypeOf(v); t != nil {
switch {
case t.Kind() == reflect.Func, t.Kind() == reflect.Ptr && t.Elem().Kind() == reflect.Func:
isErrField = true
}
}
if isErrField {
tmp := fmt.Sprintf("can not add field %q", k)
if fieldErr != "" {
fieldErr = entry.err + ", " + tmp
} else {
fieldErr = tmp
}
} else {
data[k] = v
}
}
return &Entry{Logger: entry.Logger, Data: data, Time: entry.Time, err: fieldErr, Context: entry.Context}
}
// Overrides the time of the Entry.
func (entry *Entry) WithTime(t time.Time) *Entry {
dataCopy := make(Fields, len(entry.Data))
for k, v := range entry.Data {
dataCopy[k] = v
}
return &Entry{Logger: entry.Logger, Data: dataCopy, Time: t, err: entry.err, Context: entry.Context}
}
// getPackageName reduces a fully qualified function name to the package name
// There really ought to be to be a better way...
func getPackageName(f string) string {
for {
lastPeriod := strings.LastIndex(f, ".")
lastSlash := strings.LastIndex(f, "/")
if lastPeriod > lastSlash {
f = f[:lastPeriod]
} else {
break
}
}
return f
}
// getCaller retrieves the name of the first non-logrus calling function
func getCaller() *runtime.Frame {
// cache this package's fully-qualified name
callerInitOnce.Do(func() {
pcs := make([]uintptr, maximumCallerDepth)
_ = runtime.Callers(0, pcs)
// dynamic get the package name and the minimum caller depth
for i := 0; i < maximumCallerDepth; i++ {
funcName := runtime.FuncForPC(pcs[i]).Name()
if strings.Contains(funcName, "getCaller") {
logrusPackage = getPackageName(funcName)
break
}
}
minimumCallerDepth = knownLogrusFrames
})
// Restrict the lookback frames to avoid runaway lookups
pcs := make([]uintptr, maximumCallerDepth)
depth := runtime.Callers(minimumCallerDepth, pcs)
frames := runtime.CallersFrames(pcs[:depth])
for f, again := frames.Next(); again; f, again = frames.Next() {
pkg := getPackageName(f.Function)
// If the caller isn't part of this package, we're done
if pkg != logrusPackage {
return &f //nolint:scopelint
}
}
// if we got here, we failed to find the caller's context
return nil
}
func (entry Entry) HasCaller() (has bool) {
return entry.Logger != nil &&
entry.Logger.ReportCaller &&
entry.Caller != nil
}
func (entry *Entry) log(level Level, msg string) {
var buffer *bytes.Buffer
newEntry := entry.Dup()
if newEntry.Time.IsZero() {
newEntry.Time = time.Now()
}
newEntry.Level = level
newEntry.Message = msg
newEntry.Logger.mu.Lock()
reportCaller := newEntry.Logger.ReportCaller
newEntry.Logger.mu.Unlock()
if reportCaller {
newEntry.Caller = getCaller()
}
newEntry.fireHooks()
buffer = getBuffer()
defer func() {
newEntry.Buffer = nil
putBuffer(buffer)
}()
buffer.Reset()
newEntry.Buffer = buffer
newEntry.write()
newEntry.Buffer = nil
// To avoid Entry#log() returning a value that only would make sense for
// panic() to use in Entry#Panic(), we avoid the allocation by checking
// directly here.
if level <= PanicLevel {
panic(newEntry)
}
}
func (entry *Entry) fireHooks() {
var tmpHooks LevelHooks
entry.Logger.mu.Lock()
tmpHooks = make(LevelHooks, len(entry.Logger.Hooks))
for k, v := range entry.Logger.Hooks {
tmpHooks[k] = v
}
entry.Logger.mu.Unlock()
err := tmpHooks.Fire(entry.Level, entry)
if err != nil {
fmt.Fprintf(os.Stderr, "Failed to fire hook: %v\n", err)
}
}
func (entry *Entry) write() {
serialized, err := entry.Logger.Formatter.Format(entry)
if err != nil {
fmt.Fprintf(os.Stderr, "Failed to obtain reader, %v\n", err)
return
}
entry.Logger.mu.Lock()
defer entry.Logger.mu.Unlock()
if _, err := entry.Logger.Out.Write(serialized); err != nil {
fmt.Fprintf(os.Stderr, "Failed to write to log, %v\n", err)
}
}
func (entry *Entry) Log(level Level, args ...interface{}) {
if entry.Logger.IsLevelEnabled(level) {
entry.log(level, fmt.Sprint(args...))
}
}
func (entry *Entry) Trace(args ...interface{}) {
entry.Log(TraceLevel, args...)
}
func (entry *Entry) Debug(args ...interface{}) {
entry.Log(DebugLevel, args...)
}
func (entry *Entry) Print(args ...interface{}) {
entry.Info(args...)
}
func (entry *Entry) Info(args ...interface{}) {
entry.Log(InfoLevel, args...)
}
func (entry *Entry) Warn(args ...interface{}) {
entry.Log(WarnLevel, args...)
}
func (entry *Entry) Warning(args ...interface{}) {
entry.Warn(args...)
}
func (entry *Entry) Error(args ...interface{}) {
entry.Log(ErrorLevel, args...)
}
func (entry *Entry) Fatal(args ...interface{}) {
entry.Log(FatalLevel, args...)
entry.Logger.Exit(1)
}
func (entry *Entry) Panic(args ...interface{}) {
entry.Log(PanicLevel, args...)
}
// Entry Printf family functions
func (entry *Entry) Logf(level Level, format string, args ...interface{}) {
if entry.Logger.IsLevelEnabled(level) {
entry.Log(level, fmt.Sprintf(format, args...))
}
}
func (entry *Entry) Tracef(format string, args ...interface{}) {
entry.Logf(TraceLevel, format, args...)
}
func (entry *Entry) Debugf(format string, args ...interface{}) {
entry.Logf(DebugLevel, format, args...)
}
func (entry *Entry) Infof(format string, args ...interface{}) {
entry.Logf(InfoLevel, format, args...)
}
func (entry *Entry) Printf(format string, args ...interface{}) {
entry.Infof(format, args...)
}
func (entry *Entry) Warnf(format string, args ...interface{}) {
entry.Logf(WarnLevel, format, args...)
}
func (entry *Entry) Warningf(format string, args ...interface{}) {
entry.Warnf(format, args...)
}
func (entry *Entry) Errorf(format string, args ...interface{}) {
entry.Logf(ErrorLevel, format, args...)
}
func (entry *Entry) Fatalf(format string, args ...interface{}) {
entry.Logf(FatalLevel, format, args...)
entry.Logger.Exit(1)
}
func (entry *Entry) Panicf(format string, args ...interface{}) {
entry.Logf(PanicLevel, format, args...)
}
// Entry Println family functions
func (entry *Entry) Logln(level Level, args ...interface{}) {
if entry.Logger.IsLevelEnabled(level) {
entry.Log(level, entry.sprintlnn(args...))
}
}
func (entry *Entry) Traceln(args ...interface{}) {
entry.Logln(TraceLevel, args...)
}
func (entry *Entry) Debugln(args ...interface{}) {
entry.Logln(DebugLevel, args...)
}
func (entry *Entry) Infoln(args ...interface{}) {
entry.Logln(InfoLevel, args...)
}
func (entry *Entry) Println(args ...interface{}) {
entry.Infoln(args...)
}
func (entry *Entry) Warnln(args ...interface{}) {
entry.Logln(WarnLevel, args...)
}
func (entry *Entry) Warningln(args ...interface{}) {
entry.Warnln(args...)
}
func (entry *Entry) Errorln(args ...interface{}) {
entry.Logln(ErrorLevel, args...)
}
func (entry *Entry) Fatalln(args ...interface{}) {
entry.Logln(FatalLevel, args...)
entry.Logger.Exit(1)
}
func (entry *Entry) Panicln(args ...interface{}) {
entry.Logln(PanicLevel, args...)
}
// Sprintlnn => Sprint no newline. This is to get the behavior of how
// fmt.Sprintln where spaces are always added between operands, regardless of
// their type. Instead of vendoring the Sprintln implementation to spare a
// string allocation, we do the simplest thing.
func (entry *Entry) sprintlnn(args ...interface{}) string {
msg := fmt.Sprintln(args...)
return msg[:len(msg)-1]
}

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package logrus
import (
"context"
"io"
"time"
)
var (
// std is the name of the standard logger in stdlib `log`
std = New()
)
func StandardLogger() *Logger {
return std
}
// SetOutput sets the standard logger output.
func SetOutput(out io.Writer) {
std.SetOutput(out)
}
// SetFormatter sets the standard logger formatter.
func SetFormatter(formatter Formatter) {
std.SetFormatter(formatter)
}
// SetReportCaller sets whether the standard logger will include the calling
// method as a field.
func SetReportCaller(include bool) {
std.SetReportCaller(include)
}
// SetLevel sets the standard logger level.
func SetLevel(level Level) {
std.SetLevel(level)
}
// GetLevel returns the standard logger level.
func GetLevel() Level {
return std.GetLevel()
}
// IsLevelEnabled checks if the log level of the standard logger is greater than the level param
func IsLevelEnabled(level Level) bool {
return std.IsLevelEnabled(level)
}
// AddHook adds a hook to the standard logger hooks.
func AddHook(hook Hook) {
std.AddHook(hook)
}
// WithError creates an entry from the standard logger and adds an error to it, using the value defined in ErrorKey as key.
func WithError(err error) *Entry {
return std.WithField(ErrorKey, err)
}
// WithContext creates an entry from the standard logger and adds a context to it.
func WithContext(ctx context.Context) *Entry {
return std.WithContext(ctx)
}
// WithField creates an entry from the standard logger and adds a field to
// it. If you want multiple fields, use `WithFields`.
//
// Note that it doesn't log until you call Debug, Print, Info, Warn, Fatal
// or Panic on the Entry it returns.
func WithField(key string, value interface{}) *Entry {
return std.WithField(key, value)
}
// WithFields creates an entry from the standard logger and adds multiple
// fields to it. This is simply a helper for `WithField`, invoking it
// once for each field.
//
// Note that it doesn't log until you call Debug, Print, Info, Warn, Fatal
// or Panic on the Entry it returns.
func WithFields(fields Fields) *Entry {
return std.WithFields(fields)
}
// WithTime creates an entry from the standard logger and overrides the time of
// logs generated with it.
//
// Note that it doesn't log until you call Debug, Print, Info, Warn, Fatal
// or Panic on the Entry it returns.
func WithTime(t time.Time) *Entry {
return std.WithTime(t)
}
// Trace logs a message at level Trace on the standard logger.
func Trace(args ...interface{}) {
std.Trace(args...)
}
// Debug logs a message at level Debug on the standard logger.
func Debug(args ...interface{}) {
std.Debug(args...)
}
// Print logs a message at level Info on the standard logger.
func Print(args ...interface{}) {
std.Print(args...)
}
// Info logs a message at level Info on the standard logger.
func Info(args ...interface{}) {
std.Info(args...)
}
// Warn logs a message at level Warn on the standard logger.
func Warn(args ...interface{}) {
std.Warn(args...)
}
// Warning logs a message at level Warn on the standard logger.
func Warning(args ...interface{}) {
std.Warning(args...)
}
// Error logs a message at level Error on the standard logger.
func Error(args ...interface{}) {
std.Error(args...)
}
// Panic logs a message at level Panic on the standard logger.
func Panic(args ...interface{}) {
std.Panic(args...)
}
// Fatal logs a message at level Fatal on the standard logger then the process will exit with status set to 1.
func Fatal(args ...interface{}) {
std.Fatal(args...)
}
// TraceFn logs a message from a func at level Trace on the standard logger.
func TraceFn(fn LogFunction) {
std.TraceFn(fn)
}
// DebugFn logs a message from a func at level Debug on the standard logger.
func DebugFn(fn LogFunction) {
std.DebugFn(fn)
}
// PrintFn logs a message from a func at level Info on the standard logger.
func PrintFn(fn LogFunction) {
std.PrintFn(fn)
}
// InfoFn logs a message from a func at level Info on the standard logger.
func InfoFn(fn LogFunction) {
std.InfoFn(fn)
}
// WarnFn logs a message from a func at level Warn on the standard logger.
func WarnFn(fn LogFunction) {
std.WarnFn(fn)
}
// WarningFn logs a message from a func at level Warn on the standard logger.
func WarningFn(fn LogFunction) {
std.WarningFn(fn)
}
// ErrorFn logs a message from a func at level Error on the standard logger.
func ErrorFn(fn LogFunction) {
std.ErrorFn(fn)
}
// PanicFn logs a message from a func at level Panic on the standard logger.
func PanicFn(fn LogFunction) {
std.PanicFn(fn)
}
// FatalFn logs a message from a func at level Fatal on the standard logger then the process will exit with status set to 1.
func FatalFn(fn LogFunction) {
std.FatalFn(fn)
}
// Tracef logs a message at level Trace on the standard logger.
func Tracef(format string, args ...interface{}) {
std.Tracef(format, args...)
}
// Debugf logs a message at level Debug on the standard logger.
func Debugf(format string, args ...interface{}) {
std.Debugf(format, args...)
}
// Printf logs a message at level Info on the standard logger.
func Printf(format string, args ...interface{}) {
std.Printf(format, args...)
}
// Infof logs a message at level Info on the standard logger.
func Infof(format string, args ...interface{}) {
std.Infof(format, args...)
}
// Warnf logs a message at level Warn on the standard logger.
func Warnf(format string, args ...interface{}) {
std.Warnf(format, args...)
}
// Warningf logs a message at level Warn on the standard logger.
func Warningf(format string, args ...interface{}) {
std.Warningf(format, args...)
}
// Errorf logs a message at level Error on the standard logger.
func Errorf(format string, args ...interface{}) {
std.Errorf(format, args...)
}
// Panicf logs a message at level Panic on the standard logger.
func Panicf(format string, args ...interface{}) {
std.Panicf(format, args...)
}
// Fatalf logs a message at level Fatal on the standard logger then the process will exit with status set to 1.
func Fatalf(format string, args ...interface{}) {
std.Fatalf(format, args...)
}
// Traceln logs a message at level Trace on the standard logger.
func Traceln(args ...interface{}) {
std.Traceln(args...)
}
// Debugln logs a message at level Debug on the standard logger.
func Debugln(args ...interface{}) {
std.Debugln(args...)
}
// Println logs a message at level Info on the standard logger.
func Println(args ...interface{}) {
std.Println(args...)
}
// Infoln logs a message at level Info on the standard logger.
func Infoln(args ...interface{}) {
std.Infoln(args...)
}
// Warnln logs a message at level Warn on the standard logger.
func Warnln(args ...interface{}) {
std.Warnln(args...)
}
// Warningln logs a message at level Warn on the standard logger.
func Warningln(args ...interface{}) {
std.Warningln(args...)
}
// Errorln logs a message at level Error on the standard logger.
func Errorln(args ...interface{}) {
std.Errorln(args...)
}
// Panicln logs a message at level Panic on the standard logger.
func Panicln(args ...interface{}) {
std.Panicln(args...)
}
// Fatalln logs a message at level Fatal on the standard logger then the process will exit with status set to 1.
func Fatalln(args ...interface{}) {
std.Fatalln(args...)
}

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package logrus
import "time"
// Default key names for the default fields
const (
defaultTimestampFormat = time.RFC3339
FieldKeyMsg = "msg"
FieldKeyLevel = "level"
FieldKeyTime = "time"
FieldKeyLogrusError = "logrus_error"
FieldKeyFunc = "func"
FieldKeyFile = "file"
)
// The Formatter interface is used to implement a custom Formatter. It takes an
// `Entry`. It exposes all the fields, including the default ones:
//
// * `entry.Data["msg"]`. The message passed from Info, Warn, Error ..
// * `entry.Data["time"]`. The timestamp.
// * `entry.Data["level"]. The level the entry was logged at.
//
// Any additional fields added with `WithField` or `WithFields` are also in
// `entry.Data`. Format is expected to return an array of bytes which are then
// logged to `logger.Out`.
type Formatter interface {
Format(*Entry) ([]byte, error)
}
// This is to not silently overwrite `time`, `msg`, `func` and `level` fields when
// dumping it. If this code wasn't there doing:
//
// logrus.WithField("level", 1).Info("hello")
//
// Would just silently drop the user provided level. Instead with this code
// it'll logged as:
//
// {"level": "info", "fields.level": 1, "msg": "hello", "time": "..."}
//
// It's not exported because it's still using Data in an opinionated way. It's to
// avoid code duplication between the two default formatters.
func prefixFieldClashes(data Fields, fieldMap FieldMap, reportCaller bool) {
timeKey := fieldMap.resolve(FieldKeyTime)
if t, ok := data[timeKey]; ok {
data["fields."+timeKey] = t
delete(data, timeKey)
}
msgKey := fieldMap.resolve(FieldKeyMsg)
if m, ok := data[msgKey]; ok {
data["fields."+msgKey] = m
delete(data, msgKey)
}
levelKey := fieldMap.resolve(FieldKeyLevel)
if l, ok := data[levelKey]; ok {
data["fields."+levelKey] = l
delete(data, levelKey)
}
logrusErrKey := fieldMap.resolve(FieldKeyLogrusError)
if l, ok := data[logrusErrKey]; ok {
data["fields."+logrusErrKey] = l
delete(data, logrusErrKey)
}
// If reportCaller is not set, 'func' will not conflict.
if reportCaller {
funcKey := fieldMap.resolve(FieldKeyFunc)
if l, ok := data[funcKey]; ok {
data["fields."+funcKey] = l
}
fileKey := fieldMap.resolve(FieldKeyFile)
if l, ok := data[fileKey]; ok {
data["fields."+fileKey] = l
}
}
}

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package logrus
// A hook to be fired when logging on the logging levels returned from
// `Levels()` on your implementation of the interface. Note that this is not
// fired in a goroutine or a channel with workers, you should handle such
// functionality yourself if your call is non-blocking and you don't wish for
// the logging calls for levels returned from `Levels()` to block.
type Hook interface {
Levels() []Level
Fire(*Entry) error
}
// Internal type for storing the hooks on a logger instance.
type LevelHooks map[Level][]Hook
// Add a hook to an instance of logger. This is called with
// `log.Hooks.Add(new(MyHook))` where `MyHook` implements the `Hook` interface.
func (hooks LevelHooks) Add(hook Hook) {
for _, level := range hook.Levels() {
hooks[level] = append(hooks[level], hook)
}
}
// Fire all the hooks for the passed level. Used by `entry.log` to fire
// appropriate hooks for a log entry.
func (hooks LevelHooks) Fire(level Level, entry *Entry) error {
for _, hook := range hooks[level] {
if err := hook.Fire(entry); err != nil {
return err
}
}
return nil
}

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package logrus
import (
"bytes"
"encoding/json"
"fmt"
"runtime"
)
type fieldKey string
// FieldMap allows customization of the key names for default fields.
type FieldMap map[fieldKey]string
func (f FieldMap) resolve(key fieldKey) string {
if k, ok := f[key]; ok {
return k
}
return string(key)
}
// JSONFormatter formats logs into parsable json
type JSONFormatter struct {
// TimestampFormat sets the format used for marshaling timestamps.
// The format to use is the same than for time.Format or time.Parse from the standard
// library.
// The standard Library already provides a set of predefined format.
TimestampFormat string
// DisableTimestamp allows disabling automatic timestamps in output
DisableTimestamp bool
// DisableHTMLEscape allows disabling html escaping in output
DisableHTMLEscape bool
// DataKey allows users to put all the log entry parameters into a nested dictionary at a given key.
DataKey string
// FieldMap allows users to customize the names of keys for default fields.
// As an example:
// formatter := &JSONFormatter{
// FieldMap: FieldMap{
// FieldKeyTime: "@timestamp",
// FieldKeyLevel: "@level",
// FieldKeyMsg: "@message",
// FieldKeyFunc: "@caller",
// },
// }
FieldMap FieldMap
// CallerPrettyfier can be set by the user to modify the content
// of the function and file keys in the json data when ReportCaller is
// activated. If any of the returned value is the empty string the
// corresponding key will be removed from json fields.
CallerPrettyfier func(*runtime.Frame) (function string, file string)
// PrettyPrint will indent all json logs
PrettyPrint bool
}
// Format renders a single log entry
func (f *JSONFormatter) Format(entry *Entry) ([]byte, error) {
data := make(Fields, len(entry.Data)+4)
for k, v := range entry.Data {
switch v := v.(type) {
case error:
// Otherwise errors are ignored by `encoding/json`
// https://github.com/sirupsen/logrus/issues/137
data[k] = v.Error()
default:
data[k] = v
}
}
if f.DataKey != "" {
newData := make(Fields, 4)
newData[f.DataKey] = data
data = newData
}
prefixFieldClashes(data, f.FieldMap, entry.HasCaller())
timestampFormat := f.TimestampFormat
if timestampFormat == "" {
timestampFormat = defaultTimestampFormat
}
if entry.err != "" {
data[f.FieldMap.resolve(FieldKeyLogrusError)] = entry.err
}
if !f.DisableTimestamp {
data[f.FieldMap.resolve(FieldKeyTime)] = entry.Time.Format(timestampFormat)
}
data[f.FieldMap.resolve(FieldKeyMsg)] = entry.Message
data[f.FieldMap.resolve(FieldKeyLevel)] = entry.Level.String()
if entry.HasCaller() {
funcVal := entry.Caller.Function
fileVal := fmt.Sprintf("%s:%d", entry.Caller.File, entry.Caller.Line)
if f.CallerPrettyfier != nil {
funcVal, fileVal = f.CallerPrettyfier(entry.Caller)
}
if funcVal != "" {
data[f.FieldMap.resolve(FieldKeyFunc)] = funcVal
}
if fileVal != "" {
data[f.FieldMap.resolve(FieldKeyFile)] = fileVal
}
}
var b *bytes.Buffer
if entry.Buffer != nil {
b = entry.Buffer
} else {
b = &bytes.Buffer{}
}
encoder := json.NewEncoder(b)
encoder.SetEscapeHTML(!f.DisableHTMLEscape)
if f.PrettyPrint {
encoder.SetIndent("", " ")
}
if err := encoder.Encode(data); err != nil {
return nil, fmt.Errorf("failed to marshal fields to JSON, %w", err)
}
return b.Bytes(), nil
}

404
tests/vendor/github.com/sirupsen/logrus/logger.go generated vendored Normal file
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@ -0,0 +1,404 @@
package logrus
import (
"context"
"io"
"os"
"sync"
"sync/atomic"
"time"
)
// LogFunction For big messages, it can be more efficient to pass a function
// and only call it if the log level is actually enables rather than
// generating the log message and then checking if the level is enabled
type LogFunction func() []interface{}
type Logger struct {
// The logs are `io.Copy`'d to this in a mutex. It's common to set this to a
// file, or leave it default which is `os.Stderr`. You can also set this to
// something more adventurous, such as logging to Kafka.
Out io.Writer
// Hooks for the logger instance. These allow firing events based on logging
// levels and log entries. For example, to send errors to an error tracking
// service, log to StatsD or dump the core on fatal errors.
Hooks LevelHooks
// All log entries pass through the formatter before logged to Out. The
// included formatters are `TextFormatter` and `JSONFormatter` for which
// TextFormatter is the default. In development (when a TTY is attached) it
// logs with colors, but to a file it wouldn't. You can easily implement your
// own that implements the `Formatter` interface, see the `README` or included
// formatters for examples.
Formatter Formatter
// Flag for whether to log caller info (off by default)
ReportCaller bool
// The logging level the logger should log at. This is typically (and defaults
// to) `logrus.Info`, which allows Info(), Warn(), Error() and Fatal() to be
// logged.
Level Level
// Used to sync writing to the log. Locking is enabled by Default
mu MutexWrap
// Reusable empty entry
entryPool sync.Pool
// Function to exit the application, defaults to `os.Exit()`
ExitFunc exitFunc
}
type exitFunc func(int)
type MutexWrap struct {
lock sync.Mutex
disabled bool
}
func (mw *MutexWrap) Lock() {
if !mw.disabled {
mw.lock.Lock()
}
}
func (mw *MutexWrap) Unlock() {
if !mw.disabled {
mw.lock.Unlock()
}
}
func (mw *MutexWrap) Disable() {
mw.disabled = true
}
// Creates a new logger. Configuration should be set by changing `Formatter`,
// `Out` and `Hooks` directly on the default logger instance. You can also just
// instantiate your own:
//
// var log = &logrus.Logger{
// Out: os.Stderr,
// Formatter: new(logrus.TextFormatter),
// Hooks: make(logrus.LevelHooks),
// Level: logrus.DebugLevel,
// }
//
// It's recommended to make this a global instance called `log`.
func New() *Logger {
return &Logger{
Out: os.Stderr,
Formatter: new(TextFormatter),
Hooks: make(LevelHooks),
Level: InfoLevel,
ExitFunc: os.Exit,
ReportCaller: false,
}
}
func (logger *Logger) newEntry() *Entry {
entry, ok := logger.entryPool.Get().(*Entry)
if ok {
return entry
}
return NewEntry(logger)
}
func (logger *Logger) releaseEntry(entry *Entry) {
entry.Data = map[string]interface{}{}
logger.entryPool.Put(entry)
}
// WithField allocates a new entry and adds a field to it.
// Debug, Print, Info, Warn, Error, Fatal or Panic must be then applied to
// this new returned entry.
// If you want multiple fields, use `WithFields`.
func (logger *Logger) WithField(key string, value interface{}) *Entry {
entry := logger.newEntry()
defer logger.releaseEntry(entry)
return entry.WithField(key, value)
}
// Adds a struct of fields to the log entry. All it does is call `WithField` for
// each `Field`.
func (logger *Logger) WithFields(fields Fields) *Entry {
entry := logger.newEntry()
defer logger.releaseEntry(entry)
return entry.WithFields(fields)
}
// Add an error as single field to the log entry. All it does is call
// `WithError` for the given `error`.
func (logger *Logger) WithError(err error) *Entry {
entry := logger.newEntry()
defer logger.releaseEntry(entry)
return entry.WithError(err)
}
// Add a context to the log entry.
func (logger *Logger) WithContext(ctx context.Context) *Entry {
entry := logger.newEntry()
defer logger.releaseEntry(entry)
return entry.WithContext(ctx)
}
// Overrides the time of the log entry.
func (logger *Logger) WithTime(t time.Time) *Entry {
entry := logger.newEntry()
defer logger.releaseEntry(entry)
return entry.WithTime(t)
}
func (logger *Logger) Logf(level Level, format string, args ...interface{}) {
if logger.IsLevelEnabled(level) {
entry := logger.newEntry()
entry.Logf(level, format, args...)
logger.releaseEntry(entry)
}
}
func (logger *Logger) Tracef(format string, args ...interface{}) {
logger.Logf(TraceLevel, format, args...)
}
func (logger *Logger) Debugf(format string, args ...interface{}) {
logger.Logf(DebugLevel, format, args...)
}
func (logger *Logger) Infof(format string, args ...interface{}) {
logger.Logf(InfoLevel, format, args...)
}
func (logger *Logger) Printf(format string, args ...interface{}) {
entry := logger.newEntry()
entry.Printf(format, args...)
logger.releaseEntry(entry)
}
func (logger *Logger) Warnf(format string, args ...interface{}) {
logger.Logf(WarnLevel, format, args...)
}
func (logger *Logger) Warningf(format string, args ...interface{}) {
logger.Warnf(format, args...)
}
func (logger *Logger) Errorf(format string, args ...interface{}) {
logger.Logf(ErrorLevel, format, args...)
}
func (logger *Logger) Fatalf(format string, args ...interface{}) {
logger.Logf(FatalLevel, format, args...)
logger.Exit(1)
}
func (logger *Logger) Panicf(format string, args ...interface{}) {
logger.Logf(PanicLevel, format, args...)
}
func (logger *Logger) Log(level Level, args ...interface{}) {
if logger.IsLevelEnabled(level) {
entry := logger.newEntry()
entry.Log(level, args...)
logger.releaseEntry(entry)
}
}
func (logger *Logger) LogFn(level Level, fn LogFunction) {
if logger.IsLevelEnabled(level) {
entry := logger.newEntry()
entry.Log(level, fn()...)
logger.releaseEntry(entry)
}
}
func (logger *Logger) Trace(args ...interface{}) {
logger.Log(TraceLevel, args...)
}
func (logger *Logger) Debug(args ...interface{}) {
logger.Log(DebugLevel, args...)
}
func (logger *Logger) Info(args ...interface{}) {
logger.Log(InfoLevel, args...)
}
func (logger *Logger) Print(args ...interface{}) {
entry := logger.newEntry()
entry.Print(args...)
logger.releaseEntry(entry)
}
func (logger *Logger) Warn(args ...interface{}) {
logger.Log(WarnLevel, args...)
}
func (logger *Logger) Warning(args ...interface{}) {
logger.Warn(args...)
}
func (logger *Logger) Error(args ...interface{}) {
logger.Log(ErrorLevel, args...)
}
func (logger *Logger) Fatal(args ...interface{}) {
logger.Log(FatalLevel, args...)
logger.Exit(1)
}
func (logger *Logger) Panic(args ...interface{}) {
logger.Log(PanicLevel, args...)
}
func (logger *Logger) TraceFn(fn LogFunction) {
logger.LogFn(TraceLevel, fn)
}
func (logger *Logger) DebugFn(fn LogFunction) {
logger.LogFn(DebugLevel, fn)
}
func (logger *Logger) InfoFn(fn LogFunction) {
logger.LogFn(InfoLevel, fn)
}
func (logger *Logger) PrintFn(fn LogFunction) {
entry := logger.newEntry()
entry.Print(fn()...)
logger.releaseEntry(entry)
}
func (logger *Logger) WarnFn(fn LogFunction) {
logger.LogFn(WarnLevel, fn)
}
func (logger *Logger) WarningFn(fn LogFunction) {
logger.WarnFn(fn)
}
func (logger *Logger) ErrorFn(fn LogFunction) {
logger.LogFn(ErrorLevel, fn)
}
func (logger *Logger) FatalFn(fn LogFunction) {
logger.LogFn(FatalLevel, fn)
logger.Exit(1)
}
func (logger *Logger) PanicFn(fn LogFunction) {
logger.LogFn(PanicLevel, fn)
}
func (logger *Logger) Logln(level Level, args ...interface{}) {
if logger.IsLevelEnabled(level) {
entry := logger.newEntry()
entry.Logln(level, args...)
logger.releaseEntry(entry)
}
}
func (logger *Logger) Traceln(args ...interface{}) {
logger.Logln(TraceLevel, args...)
}
func (logger *Logger) Debugln(args ...interface{}) {
logger.Logln(DebugLevel, args...)
}
func (logger *Logger) Infoln(args ...interface{}) {
logger.Logln(InfoLevel, args...)
}
func (logger *Logger) Println(args ...interface{}) {
entry := logger.newEntry()
entry.Println(args...)
logger.releaseEntry(entry)
}
func (logger *Logger) Warnln(args ...interface{}) {
logger.Logln(WarnLevel, args...)
}
func (logger *Logger) Warningln(args ...interface{}) {
logger.Warnln(args...)
}
func (logger *Logger) Errorln(args ...interface{}) {
logger.Logln(ErrorLevel, args...)
}
func (logger *Logger) Fatalln(args ...interface{}) {
logger.Logln(FatalLevel, args...)
logger.Exit(1)
}
func (logger *Logger) Panicln(args ...interface{}) {
logger.Logln(PanicLevel, args...)
}
func (logger *Logger) Exit(code int) {
runHandlers()
if logger.ExitFunc == nil {
logger.ExitFunc = os.Exit
}
logger.ExitFunc(code)
}
//When file is opened with appending mode, it's safe to
//write concurrently to a file (within 4k message on Linux).
//In these cases user can choose to disable the lock.
func (logger *Logger) SetNoLock() {
logger.mu.Disable()
}
func (logger *Logger) level() Level {
return Level(atomic.LoadUint32((*uint32)(&logger.Level)))
}
// SetLevel sets the logger level.
func (logger *Logger) SetLevel(level Level) {
atomic.StoreUint32((*uint32)(&logger.Level), uint32(level))
}
// GetLevel returns the logger level.
func (logger *Logger) GetLevel() Level {
return logger.level()
}
// AddHook adds a hook to the logger hooks.
func (logger *Logger) AddHook(hook Hook) {
logger.mu.Lock()
defer logger.mu.Unlock()
logger.Hooks.Add(hook)
}
// IsLevelEnabled checks if the log level of the logger is greater than the level param
func (logger *Logger) IsLevelEnabled(level Level) bool {
return logger.level() >= level
}
// SetFormatter sets the logger formatter.
func (logger *Logger) SetFormatter(formatter Formatter) {
logger.mu.Lock()
defer logger.mu.Unlock()
logger.Formatter = formatter
}
// SetOutput sets the logger output.
func (logger *Logger) SetOutput(output io.Writer) {
logger.mu.Lock()
defer logger.mu.Unlock()
logger.Out = output
}
func (logger *Logger) SetReportCaller(reportCaller bool) {
logger.mu.Lock()
defer logger.mu.Unlock()
logger.ReportCaller = reportCaller
}
// ReplaceHooks replaces the logger hooks and returns the old ones
func (logger *Logger) ReplaceHooks(hooks LevelHooks) LevelHooks {
logger.mu.Lock()
oldHooks := logger.Hooks
logger.Hooks = hooks
logger.mu.Unlock()
return oldHooks
}

186
tests/vendor/github.com/sirupsen/logrus/logrus.go generated vendored Normal file
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package logrus
import (
"fmt"
"log"
"strings"
)
// Fields type, used to pass to `WithFields`.
type Fields map[string]interface{}
// Level type
type Level uint32
// Convert the Level to a string. E.g. PanicLevel becomes "panic".
func (level Level) String() string {
if b, err := level.MarshalText(); err == nil {
return string(b)
} else {
return "unknown"
}
}
// ParseLevel takes a string level and returns the Logrus log level constant.
func ParseLevel(lvl string) (Level, error) {
switch strings.ToLower(lvl) {
case "panic":
return PanicLevel, nil
case "fatal":
return FatalLevel, nil
case "error":
return ErrorLevel, nil
case "warn", "warning":
return WarnLevel, nil
case "info":
return InfoLevel, nil
case "debug":
return DebugLevel, nil
case "trace":
return TraceLevel, nil
}
var l Level
return l, fmt.Errorf("not a valid logrus Level: %q", lvl)
}
// UnmarshalText implements encoding.TextUnmarshaler.
func (level *Level) UnmarshalText(text []byte) error {
l, err := ParseLevel(string(text))
if err != nil {
return err
}
*level = l
return nil
}
func (level Level) MarshalText() ([]byte, error) {
switch level {
case TraceLevel:
return []byte("trace"), nil
case DebugLevel:
return []byte("debug"), nil
case InfoLevel:
return []byte("info"), nil
case WarnLevel:
return []byte("warning"), nil
case ErrorLevel:
return []byte("error"), nil
case FatalLevel:
return []byte("fatal"), nil
case PanicLevel:
return []byte("panic"), nil
}
return nil, fmt.Errorf("not a valid logrus level %d", level)
}
// A constant exposing all logging levels
var AllLevels = []Level{
PanicLevel,
FatalLevel,
ErrorLevel,
WarnLevel,
InfoLevel,
DebugLevel,
TraceLevel,
}
// These are the different logging levels. You can set the logging level to log
// on your instance of logger, obtained with `logrus.New()`.
const (
// PanicLevel level, highest level of severity. Logs and then calls panic with the
// message passed to Debug, Info, ...
PanicLevel Level = iota
// FatalLevel level. Logs and then calls `logger.Exit(1)`. It will exit even if the
// logging level is set to Panic.
FatalLevel
// ErrorLevel level. Logs. Used for errors that should definitely be noted.
// Commonly used for hooks to send errors to an error tracking service.
ErrorLevel
// WarnLevel level. Non-critical entries that deserve eyes.
WarnLevel
// InfoLevel level. General operational entries about what's going on inside the
// application.
InfoLevel
// DebugLevel level. Usually only enabled when debugging. Very verbose logging.
DebugLevel
// TraceLevel level. Designates finer-grained informational events than the Debug.
TraceLevel
)
// Won't compile if StdLogger can't be realized by a log.Logger
var (
_ StdLogger = &log.Logger{}
_ StdLogger = &Entry{}
_ StdLogger = &Logger{}
)
// StdLogger is what your logrus-enabled library should take, that way
// it'll accept a stdlib logger and a logrus logger. There's no standard
// interface, this is the closest we get, unfortunately.
type StdLogger interface {
Print(...interface{})
Printf(string, ...interface{})
Println(...interface{})
Fatal(...interface{})
Fatalf(string, ...interface{})
Fatalln(...interface{})
Panic(...interface{})
Panicf(string, ...interface{})
Panicln(...interface{})
}
// The FieldLogger interface generalizes the Entry and Logger types
type FieldLogger interface {
WithField(key string, value interface{}) *Entry
WithFields(fields Fields) *Entry
WithError(err error) *Entry
Debugf(format string, args ...interface{})
Infof(format string, args ...interface{})
Printf(format string, args ...interface{})
Warnf(format string, args ...interface{})
Warningf(format string, args ...interface{})
Errorf(format string, args ...interface{})
Fatalf(format string, args ...interface{})
Panicf(format string, args ...interface{})
Debug(args ...interface{})
Info(args ...interface{})
Print(args ...interface{})
Warn(args ...interface{})
Warning(args ...interface{})
Error(args ...interface{})
Fatal(args ...interface{})
Panic(args ...interface{})
Debugln(args ...interface{})
Infoln(args ...interface{})
Println(args ...interface{})
Warnln(args ...interface{})
Warningln(args ...interface{})
Errorln(args ...interface{})
Fatalln(args ...interface{})
Panicln(args ...interface{})
// IsDebugEnabled() bool
// IsInfoEnabled() bool
// IsWarnEnabled() bool
// IsErrorEnabled() bool
// IsFatalEnabled() bool
// IsPanicEnabled() bool
}
// Ext1FieldLogger (the first extension to FieldLogger) is superfluous, it is
// here for consistancy. Do not use. Use Logger or Entry instead.
type Ext1FieldLogger interface {
FieldLogger
Tracef(format string, args ...interface{})
Trace(args ...interface{})
Traceln(args ...interface{})
}

11
tests/vendor/github.com/sirupsen/logrus/terminal_check_appengine.go generated vendored Normal file
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// +build appengine
package logrus
import (
"io"
)
func checkIfTerminal(w io.Writer) bool {
return true
}

13
tests/vendor/github.com/sirupsen/logrus/terminal_check_bsd.go generated vendored Normal file
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// +build darwin dragonfly freebsd netbsd openbsd
// +build !js
package logrus
import "golang.org/x/sys/unix"
const ioctlReadTermios = unix.TIOCGETA
func isTerminal(fd int) bool {
_, err := unix.IoctlGetTermios(fd, ioctlReadTermios)
return err == nil
}

7
tests/vendor/github.com/sirupsen/logrus/terminal_check_js.go generated vendored Normal file
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@ -0,0 +1,7 @@
// +build js
package logrus
func isTerminal(fd int) bool {
return false
}

11
tests/vendor/github.com/sirupsen/logrus/terminal_check_no_terminal.go generated vendored Normal file
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@ -0,0 +1,11 @@
// +build js nacl plan9
package logrus
import (
"io"
)
func checkIfTerminal(w io.Writer) bool {
return false
}

17
tests/vendor/github.com/sirupsen/logrus/terminal_check_notappengine.go generated vendored Normal file
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@ -0,0 +1,17 @@
// +build !appengine,!js,!windows,!nacl,!plan9
package logrus
import (
"io"
"os"
)
func checkIfTerminal(w io.Writer) bool {
switch v := w.(type) {
case *os.File:
return isTerminal(int(v.Fd()))
default:
return false
}
}

11
tests/vendor/github.com/sirupsen/logrus/terminal_check_solaris.go generated vendored Normal file
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@ -0,0 +1,11 @@
package logrus
import (
"golang.org/x/sys/unix"
)
// IsTerminal returns true if the given file descriptor is a terminal.
func isTerminal(fd int) bool {
_, err := unix.IoctlGetTermio(fd, unix.TCGETA)
return err == nil
}

13
tests/vendor/github.com/sirupsen/logrus/terminal_check_unix.go generated vendored Normal file
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@ -0,0 +1,13 @@
// +build linux aix zos
// +build !js
package logrus
import "golang.org/x/sys/unix"
const ioctlReadTermios = unix.TCGETS
func isTerminal(fd int) bool {
_, err := unix.IoctlGetTermios(fd, ioctlReadTermios)
return err == nil
}

27
tests/vendor/github.com/sirupsen/logrus/terminal_check_windows.go generated vendored Normal file
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@ -0,0 +1,27 @@
// +build !appengine,!js,windows
package logrus
import (
"io"
"os"
"golang.org/x/sys/windows"
)
func checkIfTerminal(w io.Writer) bool {
switch v := w.(type) {
case *os.File:
handle := windows.Handle(v.Fd())
var mode uint32
if err := windows.GetConsoleMode(handle, &mode); err != nil {
return false
}
mode |= windows.ENABLE_VIRTUAL_TERMINAL_PROCESSING
if err := windows.SetConsoleMode(handle, mode); err != nil {
return false
}
return true
}
return false
}

339
tests/vendor/github.com/sirupsen/logrus/text_formatter.go generated vendored Normal file
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package logrus
import (
"bytes"
"fmt"
"os"
"runtime"
"sort"
"strconv"
"strings"
"sync"
"time"
"unicode/utf8"
)
const (
red = 31
yellow = 33
blue = 36
gray = 37
)
var baseTimestamp time.Time
func init() {
baseTimestamp = time.Now()
}
// TextFormatter formats logs into text
type TextFormatter struct {
// Set to true to bypass checking for a TTY before outputting colors.
ForceColors bool
// Force disabling colors.
DisableColors bool
// Force quoting of all values
ForceQuote bool
// DisableQuote disables quoting for all values.
// DisableQuote will have a lower priority than ForceQuote.
// If both of them are set to true, quote will be forced on all values.
DisableQuote bool
// Override coloring based on CLICOLOR and CLICOLOR_FORCE. - https://bixense.com/clicolors/
EnvironmentOverrideColors bool
// Disable timestamp logging. useful when output is redirected to logging
// system that already adds timestamps.
DisableTimestamp bool
// Enable logging the full timestamp when a TTY is attached instead of just
// the time passed since beginning of execution.
FullTimestamp bool
// TimestampFormat to use for display when a full timestamp is printed.
// The format to use is the same than for time.Format or time.Parse from the standard
// library.
// The standard Library already provides a set of predefined format.
TimestampFormat string
// The fields are sorted by default for a consistent output. For applications
// that log extremely frequently and don't use the JSON formatter this may not
// be desired.
DisableSorting bool
// The keys sorting function, when uninitialized it uses sort.Strings.
SortingFunc func([]string)
// Disables the truncation of the level text to 4 characters.
DisableLevelTruncation bool
// PadLevelText Adds padding the level text so that all the levels output at the same length
// PadLevelText is a superset of the DisableLevelTruncation option
PadLevelText bool
// QuoteEmptyFields will wrap empty fields in quotes if true
QuoteEmptyFields bool
// Whether the logger's out is to a terminal
isTerminal bool
// FieldMap allows users to customize the names of keys for default fields.
// As an example:
// formatter := &TextFormatter{
// FieldMap: FieldMap{
// FieldKeyTime: "@timestamp",
// FieldKeyLevel: "@level",
// FieldKeyMsg: "@message"}}
FieldMap FieldMap
// CallerPrettyfier can be set by the user to modify the content
// of the function and file keys in the data when ReportCaller is
// activated. If any of the returned value is the empty string the
// corresponding key will be removed from fields.
CallerPrettyfier func(*runtime.Frame) (function string, file string)
terminalInitOnce sync.Once
// The max length of the level text, generated dynamically on init
levelTextMaxLength int
}
func (f *TextFormatter) init(entry *Entry) {
if entry.Logger != nil {
f.isTerminal = checkIfTerminal(entry.Logger.Out)
}
// Get the max length of the level text
for _, level := range AllLevels {
levelTextLength := utf8.RuneCount([]byte(level.String()))
if levelTextLength > f.levelTextMaxLength {
f.levelTextMaxLength = levelTextLength
}
}
}
func (f *TextFormatter) isColored() bool {
isColored := f.ForceColors || (f.isTerminal && (runtime.GOOS != "windows"))
if f.EnvironmentOverrideColors {
switch force, ok := os.LookupEnv("CLICOLOR_FORCE"); {
case ok && force != "0":
isColored = true
case ok && force == "0", os.Getenv("CLICOLOR") == "0":
isColored = false
}
}
return isColored && !f.DisableColors
}
// Format renders a single log entry
func (f *TextFormatter) Format(entry *Entry) ([]byte, error) {
data := make(Fields)
for k, v := range entry.Data {
data[k] = v
}
prefixFieldClashes(data, f.FieldMap, entry.HasCaller())
keys := make([]string, 0, len(data))
for k := range data {
keys = append(keys, k)
}
var funcVal, fileVal string
fixedKeys := make([]string, 0, 4+len(data))
if !f.DisableTimestamp {
fixedKeys = append(fixedKeys, f.FieldMap.resolve(FieldKeyTime))
}
fixedKeys = append(fixedKeys, f.FieldMap.resolve(FieldKeyLevel))
if entry.Message != "" {
fixedKeys = append(fixedKeys, f.FieldMap.resolve(FieldKeyMsg))
}
if entry.err != "" {
fixedKeys = append(fixedKeys, f.FieldMap.resolve(FieldKeyLogrusError))
}
if entry.HasCaller() {
if f.CallerPrettyfier != nil {
funcVal, fileVal = f.CallerPrettyfier(entry.Caller)
} else {
funcVal = entry.Caller.Function
fileVal = fmt.Sprintf("%s:%d", entry.Caller.File, entry.Caller.Line)
}
if funcVal != "" {
fixedKeys = append(fixedKeys, f.FieldMap.resolve(FieldKeyFunc))
}
if fileVal != "" {
fixedKeys = append(fixedKeys, f.FieldMap.resolve(FieldKeyFile))
}
}
if !f.DisableSorting {
if f.SortingFunc == nil {
sort.Strings(keys)
fixedKeys = append(fixedKeys, keys...)
} else {
if !f.isColored() {
fixedKeys = append(fixedKeys, keys...)
f.SortingFunc(fixedKeys)
} else {
f.SortingFunc(keys)
}
}
} else {
fixedKeys = append(fixedKeys, keys...)
}
var b *bytes.Buffer
if entry.Buffer != nil {
b = entry.Buffer
} else {
b = &bytes.Buffer{}
}
f.terminalInitOnce.Do(func() { f.init(entry) })
timestampFormat := f.TimestampFormat
if timestampFormat == "" {
timestampFormat = defaultTimestampFormat
}
if f.isColored() {
f.printColored(b, entry, keys, data, timestampFormat)
} else {
for _, key := range fixedKeys {
var value interface{}
switch {
case key == f.FieldMap.resolve(FieldKeyTime):
value = entry.Time.Format(timestampFormat)
case key == f.FieldMap.resolve(FieldKeyLevel):
value = entry.Level.String()
case key == f.FieldMap.resolve(FieldKeyMsg):
value = entry.Message
case key == f.FieldMap.resolve(FieldKeyLogrusError):
value = entry.err
case key == f.FieldMap.resolve(FieldKeyFunc) && entry.HasCaller():
value = funcVal
case key == f.FieldMap.resolve(FieldKeyFile) && entry.HasCaller():
value = fileVal
default:
value = data[key]
}
f.appendKeyValue(b, key, value)
}
}
b.WriteByte('\n')
return b.Bytes(), nil
}
func (f *TextFormatter) printColored(b *bytes.Buffer, entry *Entry, keys []string, data Fields, timestampFormat string) {
var levelColor int
switch entry.Level {
case DebugLevel, TraceLevel:
levelColor = gray
case WarnLevel:
levelColor = yellow
case ErrorLevel, FatalLevel, PanicLevel:
levelColor = red
case InfoLevel:
levelColor = blue
default:
levelColor = blue
}
levelText := strings.ToUpper(entry.Level.String())
if !f.DisableLevelTruncation && !f.PadLevelText {
levelText = levelText[0:4]
}
if f.PadLevelText {
// Generates the format string used in the next line, for example "%-6s" or "%-7s".
// Based on the max level text length.
formatString := "%-" + strconv.Itoa(f.levelTextMaxLength) + "s"
// Formats the level text by appending spaces up to the max length, for example:
// - "INFO "
// - "WARNING"
levelText = fmt.Sprintf(formatString, levelText)
}
// Remove a single newline if it already exists in the message to keep
// the behavior of logrus text_formatter the same as the stdlib log package
entry.Message = strings.TrimSuffix(entry.Message, "\n")
caller := ""
if entry.HasCaller() {
funcVal := fmt.Sprintf("%s()", entry.Caller.Function)
fileVal := fmt.Sprintf("%s:%d", entry.Caller.File, entry.Caller.Line)
if f.CallerPrettyfier != nil {
funcVal, fileVal = f.CallerPrettyfier(entry.Caller)
}
if fileVal == "" {
caller = funcVal
} else if funcVal == "" {
caller = fileVal
} else {
caller = fileVal + " " + funcVal
}
}
switch {
case f.DisableTimestamp:
fmt.Fprintf(b, "\x1b[%dm%s\x1b[0m%s %-44s ", levelColor, levelText, caller, entry.Message)
case !f.FullTimestamp:
fmt.Fprintf(b, "\x1b[%dm%s\x1b[0m[%04d]%s %-44s ", levelColor, levelText, int(entry.Time.Sub(baseTimestamp)/time.Second), caller, entry.Message)
default:
fmt.Fprintf(b, "\x1b[%dm%s\x1b[0m[%s]%s %-44s ", levelColor, levelText, entry.Time.Format(timestampFormat), caller, entry.Message)
}
for _, k := range keys {
v := data[k]
fmt.Fprintf(b, " \x1b[%dm%s\x1b[0m=", levelColor, k)
f.appendValue(b, v)
}
}
func (f *TextFormatter) needsQuoting(text string) bool {
if f.ForceQuote {
return true
}
if f.QuoteEmptyFields && len(text) == 0 {
return true
}
if f.DisableQuote {
return false
}
for _, ch := range text {
if !((ch >= 'a' && ch <= 'z') ||
(ch >= 'A' && ch <= 'Z') ||
(ch >= '0' && ch <= '9') ||
ch == '-' || ch == '.' || ch == '_' || ch == '/' || ch == '@' || ch == '^' || ch == '+') {
return true
}
}
return false
}
func (f *TextFormatter) appendKeyValue(b *bytes.Buffer, key string, value interface{}) {
if b.Len() > 0 {
b.WriteByte(' ')
}
b.WriteString(key)
b.WriteByte('=')
f.appendValue(b, value)
}
func (f *TextFormatter) appendValue(b *bytes.Buffer, value interface{}) {
stringVal, ok := value.(string)
if !ok {
stringVal = fmt.Sprint(value)
}
if !f.needsQuoting(stringVal) {
b.WriteString(stringVal)
} else {
b.WriteString(fmt.Sprintf("%q", stringVal))
}
}

70
tests/vendor/github.com/sirupsen/logrus/writer.go generated vendored Normal file
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@ -0,0 +1,70 @@
package logrus
import (
"bufio"
"io"
"runtime"
)
// Writer at INFO level. See WriterLevel for details.
func (logger *Logger) Writer() *io.PipeWriter {
return logger.WriterLevel(InfoLevel)
}
// WriterLevel returns an io.Writer that can be used to write arbitrary text to
// the logger at the given log level. Each line written to the writer will be
// printed in the usual way using formatters and hooks. The writer is part of an
// io.Pipe and it is the callers responsibility to close the writer when done.
// This can be used to override the standard library logger easily.
func (logger *Logger) WriterLevel(level Level) *io.PipeWriter {
return NewEntry(logger).WriterLevel(level)
}
func (entry *Entry) Writer() *io.PipeWriter {
return entry.WriterLevel(InfoLevel)
}
func (entry *Entry) WriterLevel(level Level) *io.PipeWriter {
reader, writer := io.Pipe()
var printFunc func(args ...interface{})
switch level {
case TraceLevel:
printFunc = entry.Trace
case DebugLevel:
printFunc = entry.Debug
case InfoLevel:
printFunc = entry.Info
case WarnLevel:
printFunc = entry.Warn
case ErrorLevel:
printFunc = entry.Error
case FatalLevel:
printFunc = entry.Fatal
case PanicLevel:
printFunc = entry.Panic
default:
printFunc = entry.Print
}
go entry.writerScanner(reader, printFunc)
runtime.SetFinalizer(writer, writerFinalizer)
return writer
}
func (entry *Entry) writerScanner(reader *io.PipeReader, printFunc func(args ...interface{})) {
scanner := bufio.NewScanner(reader)
for scanner.Scan() {
printFunc(scanner.Text())
}
if err := scanner.Err(); err != nil {
entry.Errorf("Error while reading from Writer: %s", err)
}
reader.Close()
}
func writerFinalizer(writer *io.PipeWriter) {
writer.Close()
}

21
tests/vendor/github.com/stretchr/testify/LICENSE generated vendored Normal file
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@ -0,0 +1,21 @@
MIT License
Copyright (c) 2012-2020 Mat Ryer, Tyler Bunnell and contributors.
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

436
tests/vendor/github.com/stretchr/testify/assert/assertion_compare.go generated vendored Normal file
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@ -0,0 +1,436 @@
package assert
import (
"fmt"
"reflect"
"time"
)
type CompareType int
const (
compareLess CompareType = iota - 1
compareEqual
compareGreater
)
var (
intType = reflect.TypeOf(int(1))
int8Type = reflect.TypeOf(int8(1))
int16Type = reflect.TypeOf(int16(1))
int32Type = reflect.TypeOf(int32(1))
int64Type = reflect.TypeOf(int64(1))
uintType = reflect.TypeOf(uint(1))
uint8Type = reflect.TypeOf(uint8(1))
uint16Type = reflect.TypeOf(uint16(1))
uint32Type = reflect.TypeOf(uint32(1))
uint64Type = reflect.TypeOf(uint64(1))
float32Type = reflect.TypeOf(float32(1))
float64Type = reflect.TypeOf(float64(1))
stringType = reflect.TypeOf("")
timeType = reflect.TypeOf(time.Time{})
)
func compare(obj1, obj2 interface{}, kind reflect.Kind) (CompareType, bool) {
obj1Value := reflect.ValueOf(obj1)
obj2Value := reflect.ValueOf(obj2)
// throughout this switch we try and avoid calling .Convert() if possible,
// as this has a pretty big performance impact
switch kind {
case reflect.Int:
{
intobj1, ok := obj1.(int)
if !ok {
intobj1 = obj1Value.Convert(intType).Interface().(int)
}
intobj2, ok := obj2.(int)
if !ok {
intobj2 = obj2Value.Convert(intType).Interface().(int)
}
if intobj1 > intobj2 {
return compareGreater, true
}
if intobj1 == intobj2 {
return compareEqual, true
}
if intobj1 < intobj2 {
return compareLess, true
}
}
case reflect.Int8:
{
int8obj1, ok := obj1.(int8)
if !ok {
int8obj1 = obj1Value.Convert(int8Type).Interface().(int8)
}
int8obj2, ok := obj2.(int8)
if !ok {
int8obj2 = obj2Value.Convert(int8Type).Interface().(int8)
}
if int8obj1 > int8obj2 {
return compareGreater, true
}
if int8obj1 == int8obj2 {
return compareEqual, true
}
if int8obj1 < int8obj2 {
return compareLess, true
}
}
case reflect.Int16:
{
int16obj1, ok := obj1.(int16)
if !ok {
int16obj1 = obj1Value.Convert(int16Type).Interface().(int16)
}
int16obj2, ok := obj2.(int16)
if !ok {
int16obj2 = obj2Value.Convert(int16Type).Interface().(int16)
}
if int16obj1 > int16obj2 {
return compareGreater, true
}
if int16obj1 == int16obj2 {
return compareEqual, true
}
if int16obj1 < int16obj2 {
return compareLess, true
}
}
case reflect.Int32:
{
int32obj1, ok := obj1.(int32)
if !ok {
int32obj1 = obj1Value.Convert(int32Type).Interface().(int32)
}
int32obj2, ok := obj2.(int32)
if !ok {
int32obj2 = obj2Value.Convert(int32Type).Interface().(int32)
}
if int32obj1 > int32obj2 {
return compareGreater, true
}
if int32obj1 == int32obj2 {
return compareEqual, true
}
if int32obj1 < int32obj2 {
return compareLess, true
}
}
case reflect.Int64:
{
int64obj1, ok := obj1.(int64)
if !ok {
int64obj1 = obj1Value.Convert(int64Type).Interface().(int64)
}
int64obj2, ok := obj2.(int64)
if !ok {
int64obj2 = obj2Value.Convert(int64Type).Interface().(int64)
}
if int64obj1 > int64obj2 {
return compareGreater, true
}
if int64obj1 == int64obj2 {
return compareEqual, true
}
if int64obj1 < int64obj2 {
return compareLess, true
}
}
case reflect.Uint:
{
uintobj1, ok := obj1.(uint)
if !ok {
uintobj1 = obj1Value.Convert(uintType).Interface().(uint)
}
uintobj2, ok := obj2.(uint)
if !ok {
uintobj2 = obj2Value.Convert(uintType).Interface().(uint)
}
if uintobj1 > uintobj2 {
return compareGreater, true
}
if uintobj1 == uintobj2 {
return compareEqual, true
}
if uintobj1 < uintobj2 {
return compareLess, true
}
}
case reflect.Uint8:
{
uint8obj1, ok := obj1.(uint8)
if !ok {
uint8obj1 = obj1Value.Convert(uint8Type).Interface().(uint8)
}
uint8obj2, ok := obj2.(uint8)
if !ok {
uint8obj2 = obj2Value.Convert(uint8Type).Interface().(uint8)
}
if uint8obj1 > uint8obj2 {
return compareGreater, true
}
if uint8obj1 == uint8obj2 {
return compareEqual, true
}
if uint8obj1 < uint8obj2 {
return compareLess, true
}
}
case reflect.Uint16:
{
uint16obj1, ok := obj1.(uint16)
if !ok {
uint16obj1 = obj1Value.Convert(uint16Type).Interface().(uint16)
}
uint16obj2, ok := obj2.(uint16)
if !ok {
uint16obj2 = obj2Value.Convert(uint16Type).Interface().(uint16)
}
if uint16obj1 > uint16obj2 {
return compareGreater, true
}
if uint16obj1 == uint16obj2 {
return compareEqual, true
}
if uint16obj1 < uint16obj2 {
return compareLess, true
}
}
case reflect.Uint32:
{
uint32obj1, ok := obj1.(uint32)
if !ok {
uint32obj1 = obj1Value.Convert(uint32Type).Interface().(uint32)
}
uint32obj2, ok := obj2.(uint32)
if !ok {
uint32obj2 = obj2Value.Convert(uint32Type).Interface().(uint32)
}
if uint32obj1 > uint32obj2 {
return compareGreater, true
}
if uint32obj1 == uint32obj2 {
return compareEqual, true
}
if uint32obj1 < uint32obj2 {
return compareLess, true
}
}
case reflect.Uint64:
{
uint64obj1, ok := obj1.(uint64)
if !ok {
uint64obj1 = obj1Value.Convert(uint64Type).Interface().(uint64)
}
uint64obj2, ok := obj2.(uint64)
if !ok {
uint64obj2 = obj2Value.Convert(uint64Type).Interface().(uint64)
}
if uint64obj1 > uint64obj2 {
return compareGreater, true
}
if uint64obj1 == uint64obj2 {
return compareEqual, true
}
if uint64obj1 < uint64obj2 {
return compareLess, true
}
}
case reflect.Float32:
{
float32obj1, ok := obj1.(float32)
if !ok {
float32obj1 = obj1Value.Convert(float32Type).Interface().(float32)
}
float32obj2, ok := obj2.(float32)
if !ok {
float32obj2 = obj2Value.Convert(float32Type).Interface().(float32)
}
if float32obj1 > float32obj2 {
return compareGreater, true
}
if float32obj1 == float32obj2 {
return compareEqual, true
}
if float32obj1 < float32obj2 {
return compareLess, true
}
}
case reflect.Float64:
{
float64obj1, ok := obj1.(float64)
if !ok {
float64obj1 = obj1Value.Convert(float64Type).Interface().(float64)
}
float64obj2, ok := obj2.(float64)
if !ok {
float64obj2 = obj2Value.Convert(float64Type).Interface().(float64)
}
if float64obj1 > float64obj2 {
return compareGreater, true
}
if float64obj1 == float64obj2 {
return compareEqual, true
}
if float64obj1 < float64obj2 {
return compareLess, true
}
}
case reflect.String:
{
stringobj1, ok := obj1.(string)
if !ok {
stringobj1 = obj1Value.Convert(stringType).Interface().(string)
}
stringobj2, ok := obj2.(string)
if !ok {
stringobj2 = obj2Value.Convert(stringType).Interface().(string)
}
if stringobj1 > stringobj2 {
return compareGreater, true
}
if stringobj1 == stringobj2 {
return compareEqual, true
}
if stringobj1 < stringobj2 {
return compareLess, true
}
}
// Check for known struct types we can check for compare results.
case reflect.Struct:
{
// All structs enter here. We're not interested in most types.
if !canConvert(obj1Value, timeType) {
break
}
// time.Time can compared!
timeObj1, ok := obj1.(time.Time)
if !ok {
timeObj1 = obj1Value.Convert(timeType).Interface().(time.Time)
}
timeObj2, ok := obj2.(time.Time)
if !ok {
timeObj2 = obj2Value.Convert(timeType).Interface().(time.Time)
}
return compare(timeObj1.UnixNano(), timeObj2.UnixNano(), reflect.Int64)
}
}
return compareEqual, false
}
// Greater asserts that the first element is greater than the second
//
// assert.Greater(t, 2, 1)
// assert.Greater(t, float64(2), float64(1))
// assert.Greater(t, "b", "a")
func Greater(t TestingT, e1 interface{}, e2 interface{}, msgAndArgs ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
return compareTwoValues(t, e1, e2, []CompareType{compareGreater}, "\"%v\" is not greater than \"%v\"", msgAndArgs...)
}
// GreaterOrEqual asserts that the first element is greater than or equal to the second
//
// assert.GreaterOrEqual(t, 2, 1)
// assert.GreaterOrEqual(t, 2, 2)
// assert.GreaterOrEqual(t, "b", "a")
// assert.GreaterOrEqual(t, "b", "b")
func GreaterOrEqual(t TestingT, e1 interface{}, e2 interface{}, msgAndArgs ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
return compareTwoValues(t, e1, e2, []CompareType{compareGreater, compareEqual}, "\"%v\" is not greater than or equal to \"%v\"", msgAndArgs...)
}
// Less asserts that the first element is less than the second
//
// assert.Less(t, 1, 2)
// assert.Less(t, float64(1), float64(2))
// assert.Less(t, "a", "b")
func Less(t TestingT, e1 interface{}, e2 interface{}, msgAndArgs ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
return compareTwoValues(t, e1, e2, []CompareType{compareLess}, "\"%v\" is not less than \"%v\"", msgAndArgs...)
}
// LessOrEqual asserts that the first element is less than or equal to the second
//
// assert.LessOrEqual(t, 1, 2)
// assert.LessOrEqual(t, 2, 2)
// assert.LessOrEqual(t, "a", "b")
// assert.LessOrEqual(t, "b", "b")
func LessOrEqual(t TestingT, e1 interface{}, e2 interface{}, msgAndArgs ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
return compareTwoValues(t, e1, e2, []CompareType{compareLess, compareEqual}, "\"%v\" is not less than or equal to \"%v\"", msgAndArgs...)
}
// Positive asserts that the specified element is positive
//
// assert.Positive(t, 1)
// assert.Positive(t, 1.23)
func Positive(t TestingT, e interface{}, msgAndArgs ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
zero := reflect.Zero(reflect.TypeOf(e))
return compareTwoValues(t, e, zero.Interface(), []CompareType{compareGreater}, "\"%v\" is not positive", msgAndArgs...)
}
// Negative asserts that the specified element is negative
//
// assert.Negative(t, -1)
// assert.Negative(t, -1.23)
func Negative(t TestingT, e interface{}, msgAndArgs ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
zero := reflect.Zero(reflect.TypeOf(e))
return compareTwoValues(t, e, zero.Interface(), []CompareType{compareLess}, "\"%v\" is not negative", msgAndArgs...)
}
func compareTwoValues(t TestingT, e1 interface{}, e2 interface{}, allowedComparesResults []CompareType, failMessage string, msgAndArgs ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
e1Kind := reflect.ValueOf(e1).Kind()
e2Kind := reflect.ValueOf(e2).Kind()
if e1Kind != e2Kind {
return Fail(t, "Elements should be the same type", msgAndArgs...)
}
compareResult, isComparable := compare(e1, e2, e1Kind)
if !isComparable {
return Fail(t, fmt.Sprintf("Can not compare type \"%s\"", reflect.TypeOf(e1)), msgAndArgs...)
}
if !containsValue(allowedComparesResults, compareResult) {
return Fail(t, fmt.Sprintf(failMessage, e1, e2), msgAndArgs...)
}
return true
}
func containsValue(values []CompareType, value CompareType) bool {
for _, v := range values {
if v == value {
return true
}
}
return false
}

16
tests/vendor/github.com/stretchr/testify/assert/assertion_compare_can_convert.go generated vendored Normal file
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@ -0,0 +1,16 @@
//go:build go1.17
// +build go1.17
// TODO: once support for Go 1.16 is dropped, this file can be
// merged/removed with assertion_compare_go1.17_test.go and
// assertion_compare_legacy.go
package assert
import "reflect"
// Wrapper around reflect.Value.CanConvert, for compatability
// reasons.
func canConvert(value reflect.Value, to reflect.Type) bool {
return value.CanConvert(to)
}

16
tests/vendor/github.com/stretchr/testify/assert/assertion_compare_legacy.go generated vendored Normal file
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@ -0,0 +1,16 @@
//go:build !go1.17
// +build !go1.17
// TODO: once support for Go 1.16 is dropped, this file can be
// merged/removed with assertion_compare_go1.17_test.go and
// assertion_compare_can_convert.go
package assert
import "reflect"
// Older versions of Go does not have the reflect.Value.CanConvert
// method.
func canConvert(value reflect.Value, to reflect.Type) bool {
return false
}

753
tests/vendor/github.com/stretchr/testify/assert/assertion_format.go generated vendored Normal file
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@ -0,0 +1,753 @@
/*
* CODE GENERATED AUTOMATICALLY WITH github.com/stretchr/testify/_codegen
* THIS FILE MUST NOT BE EDITED BY HAND
*/
package assert
import (
http "net/http"
url "net/url"
time "time"
)
// Conditionf uses a Comparison to assert a complex condition.
func Conditionf(t TestingT, comp Comparison, msg string, args ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
return Condition(t, comp, append([]interface{}{msg}, args...)...)
}
// Containsf asserts that the specified string, list(array, slice...) or map contains the
// specified substring or element.
//
// assert.Containsf(t, "Hello World", "World", "error message %s", "formatted")
// assert.Containsf(t, ["Hello", "World"], "World", "error message %s", "formatted")
// assert.Containsf(t, {"Hello": "World"}, "Hello", "error message %s", "formatted")
func Containsf(t TestingT, s interface{}, contains interface{}, msg string, args ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
return Contains(t, s, contains, append([]interface{}{msg}, args...)...)
}
// DirExistsf checks whether a directory exists in the given path. It also fails
// if the path is a file rather a directory or there is an error checking whether it exists.
func DirExistsf(t TestingT, path string, msg string, args ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
return DirExists(t, path, append([]interface{}{msg}, args...)...)
}
// ElementsMatchf asserts that the specified listA(array, slice...) is equal to specified
// listB(array, slice...) ignoring the order of the elements. If there are duplicate elements,
// the number of appearances of each of them in both lists should match.
//
// assert.ElementsMatchf(t, [1, 3, 2, 3], [1, 3, 3, 2], "error message %s", "formatted")
func ElementsMatchf(t TestingT, listA interface{}, listB interface{}, msg string, args ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
return ElementsMatch(t, listA, listB, append([]interface{}{msg}, args...)...)
}
// Emptyf asserts that the specified object is empty. I.e. nil, "", false, 0 or either
// a slice or a channel with len == 0.
//
// assert.Emptyf(t, obj, "error message %s", "formatted")
func Emptyf(t TestingT, object interface{}, msg string, args ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
return Empty(t, object, append([]interface{}{msg}, args...)...)
}
// Equalf asserts that two objects are equal.
//
// assert.Equalf(t, 123, 123, "error message %s", "formatted")
//
// Pointer variable equality is determined based on the equality of the
// referenced values (as opposed to the memory addresses). Function equality
// cannot be determined and will always fail.
func Equalf(t TestingT, expected interface{}, actual interface{}, msg string, args ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
return Equal(t, expected, actual, append([]interface{}{msg}, args...)...)
}
// EqualErrorf asserts that a function returned an error (i.e. not `nil`)
// and that it is equal to the provided error.
//
// actualObj, err := SomeFunction()
// assert.EqualErrorf(t, err, expectedErrorString, "error message %s", "formatted")
func EqualErrorf(t TestingT, theError error, errString string, msg string, args ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
return EqualError(t, theError, errString, append([]interface{}{msg}, args...)...)
}
// EqualValuesf asserts that two objects are equal or convertable to the same types
// and equal.
//
// assert.EqualValuesf(t, uint32(123), int32(123), "error message %s", "formatted")
func EqualValuesf(t TestingT, expected interface{}, actual interface{}, msg string, args ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
return EqualValues(t, expected, actual, append([]interface{}{msg}, args...)...)
}
// Errorf asserts that a function returned an error (i.e. not `nil`).
//
// actualObj, err := SomeFunction()
// if assert.Errorf(t, err, "error message %s", "formatted") {
// assert.Equal(t, expectedErrorf, err)
// }
func Errorf(t TestingT, err error, msg string, args ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
return Error(t, err, append([]interface{}{msg}, args...)...)
}
// ErrorAsf asserts that at least one of the errors in err's chain matches target, and if so, sets target to that error value.
// This is a wrapper for errors.As.
func ErrorAsf(t TestingT, err error, target interface{}, msg string, args ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
return ErrorAs(t, err, target, append([]interface{}{msg}, args...)...)
}
// ErrorContainsf asserts that a function returned an error (i.e. not `nil`)
// and that the error contains the specified substring.
//
// actualObj, err := SomeFunction()
// assert.ErrorContainsf(t, err, expectedErrorSubString, "error message %s", "formatted")
func ErrorContainsf(t TestingT, theError error, contains string, msg string, args ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
return ErrorContains(t, theError, contains, append([]interface{}{msg}, args...)...)
}
// ErrorIsf asserts that at least one of the errors in err's chain matches target.
// This is a wrapper for errors.Is.
func ErrorIsf(t TestingT, err error, target error, msg string, args ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
return ErrorIs(t, err, target, append([]interface{}{msg}, args...)...)
}
// Eventuallyf asserts that given condition will be met in waitFor time,
// periodically checking target function each tick.
//
// assert.Eventuallyf(t, func() bool { return true; }, time.Second, 10*time.Millisecond, "error message %s", "formatted")
func Eventuallyf(t TestingT, condition func() bool, waitFor time.Duration, tick time.Duration, msg string, args ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
return Eventually(t, condition, waitFor, tick, append([]interface{}{msg}, args...)...)
}
// Exactlyf asserts that two objects are equal in value and type.
//
// assert.Exactlyf(t, int32(123), int64(123), "error message %s", "formatted")
func Exactlyf(t TestingT, expected interface{}, actual interface{}, msg string, args ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
return Exactly(t, expected, actual, append([]interface{}{msg}, args...)...)
}
// Failf reports a failure through
func Failf(t TestingT, failureMessage string, msg string, args ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
return Fail(t, failureMessage, append([]interface{}{msg}, args...)...)
}
// FailNowf fails test
func FailNowf(t TestingT, failureMessage string, msg string, args ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
return FailNow(t, failureMessage, append([]interface{}{msg}, args...)...)
}
// Falsef asserts that the specified value is false.
//
// assert.Falsef(t, myBool, "error message %s", "formatted")
func Falsef(t TestingT, value bool, msg string, args ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
return False(t, value, append([]interface{}{msg}, args...)...)
}
// FileExistsf checks whether a file exists in the given path. It also fails if
// the path points to a directory or there is an error when trying to check the file.
func FileExistsf(t TestingT, path string, msg string, args ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
return FileExists(t, path, append([]interface{}{msg}, args...)...)
}
// Greaterf asserts that the first element is greater than the second
//
// assert.Greaterf(t, 2, 1, "error message %s", "formatted")
// assert.Greaterf(t, float64(2), float64(1), "error message %s", "formatted")
// assert.Greaterf(t, "b", "a", "error message %s", "formatted")
func Greaterf(t TestingT, e1 interface{}, e2 interface{}, msg string, args ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
return Greater(t, e1, e2, append([]interface{}{msg}, args...)...)
}
// GreaterOrEqualf asserts that the first element is greater than or equal to the second
//
// assert.GreaterOrEqualf(t, 2, 1, "error message %s", "formatted")
// assert.GreaterOrEqualf(t, 2, 2, "error message %s", "formatted")
// assert.GreaterOrEqualf(t, "b", "a", "error message %s", "formatted")
// assert.GreaterOrEqualf(t, "b", "b", "error message %s", "formatted")
func GreaterOrEqualf(t TestingT, e1 interface{}, e2 interface{}, msg string, args ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
return GreaterOrEqual(t, e1, e2, append([]interface{}{msg}, args...)...)
}
// HTTPBodyContainsf asserts that a specified handler returns a
// body that contains a string.
//
// assert.HTTPBodyContainsf(t, myHandler, "GET", "www.google.com", nil, "I'm Feeling Lucky", "error message %s", "formatted")
//
// Returns whether the assertion was successful (true) or not (false).
func HTTPBodyContainsf(t TestingT, handler http.HandlerFunc, method string, url string, values url.Values, str interface{}, msg string, args ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
return HTTPBodyContains(t, handler, method, url, values, str, append([]interface{}{msg}, args...)...)
}
// HTTPBodyNotContainsf asserts that a specified handler returns a
// body that does not contain a string.
//
// assert.HTTPBodyNotContainsf(t, myHandler, "GET", "www.google.com", nil, "I'm Feeling Lucky", "error message %s", "formatted")
//
// Returns whether the assertion was successful (true) or not (false).
func HTTPBodyNotContainsf(t TestingT, handler http.HandlerFunc, method string, url string, values url.Values, str interface{}, msg string, args ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
return HTTPBodyNotContains(t, handler, method, url, values, str, append([]interface{}{msg}, args...)...)
}
// HTTPErrorf asserts that a specified handler returns an error status code.
//
// assert.HTTPErrorf(t, myHandler, "POST", "/a/b/c", url.Values{"a": []string{"b", "c"}}
//
// Returns whether the assertion was successful (true) or not (false).
func HTTPErrorf(t TestingT, handler http.HandlerFunc, method string, url string, values url.Values, msg string, args ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
return HTTPError(t, handler, method, url, values, append([]interface{}{msg}, args...)...)
}
// HTTPRedirectf asserts that a specified handler returns a redirect status code.
//
// assert.HTTPRedirectf(t, myHandler, "GET", "/a/b/c", url.Values{"a": []string{"b", "c"}}
//
// Returns whether the assertion was successful (true) or not (false).
func HTTPRedirectf(t TestingT, handler http.HandlerFunc, method string, url string, values url.Values, msg string, args ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
return HTTPRedirect(t, handler, method, url, values, append([]interface{}{msg}, args...)...)
}
// HTTPStatusCodef asserts that a specified handler returns a specified status code.
//
// assert.HTTPStatusCodef(t, myHandler, "GET", "/notImplemented", nil, 501, "error message %s", "formatted")
//
// Returns whether the assertion was successful (true) or not (false).
func HTTPStatusCodef(t TestingT, handler http.HandlerFunc, method string, url string, values url.Values, statuscode int, msg string, args ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
return HTTPStatusCode(t, handler, method, url, values, statuscode, append([]interface{}{msg}, args...)...)
}
// HTTPSuccessf asserts that a specified handler returns a success status code.
//
// assert.HTTPSuccessf(t, myHandler, "POST", "http://www.google.com", nil, "error message %s", "formatted")
//
// Returns whether the assertion was successful (true) or not (false).
func HTTPSuccessf(t TestingT, handler http.HandlerFunc, method string, url string, values url.Values, msg string, args ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
return HTTPSuccess(t, handler, method, url, values, append([]interface{}{msg}, args...)...)
}
// Implementsf asserts that an object is implemented by the specified interface.
//
// assert.Implementsf(t, (*MyInterface)(nil), new(MyObject), "error message %s", "formatted")
func Implementsf(t TestingT, interfaceObject interface{}, object interface{}, msg string, args ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
return Implements(t, interfaceObject, object, append([]interface{}{msg}, args...)...)
}
// InDeltaf asserts that the two numerals are within delta of each other.
//
// assert.InDeltaf(t, math.Pi, 22/7.0, 0.01, "error message %s", "formatted")
func InDeltaf(t TestingT, expected interface{}, actual interface{}, delta float64, msg string, args ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
return InDelta(t, expected, actual, delta, append([]interface{}{msg}, args...)...)
}
// InDeltaMapValuesf is the same as InDelta, but it compares all values between two maps. Both maps must have exactly the same keys.
func InDeltaMapValuesf(t TestingT, expected interface{}, actual interface{}, delta float64, msg string, args ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
return InDeltaMapValues(t, expected, actual, delta, append([]interface{}{msg}, args...)...)
}
// InDeltaSlicef is the same as InDelta, except it compares two slices.
func InDeltaSlicef(t TestingT, expected interface{}, actual interface{}, delta float64, msg string, args ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
return InDeltaSlice(t, expected, actual, delta, append([]interface{}{msg}, args...)...)
}
// InEpsilonf asserts that expected and actual have a relative error less than epsilon
func InEpsilonf(t TestingT, expected interface{}, actual interface{}, epsilon float64, msg string, args ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
return InEpsilon(t, expected, actual, epsilon, append([]interface{}{msg}, args...)...)
}
// InEpsilonSlicef is the same as InEpsilon, except it compares each value from two slices.
func InEpsilonSlicef(t TestingT, expected interface{}, actual interface{}, epsilon float64, msg string, args ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
return InEpsilonSlice(t, expected, actual, epsilon, append([]interface{}{msg}, args...)...)
}
// IsDecreasingf asserts that the collection is decreasing
//
// assert.IsDecreasingf(t, []int{2, 1, 0}, "error message %s", "formatted")
// assert.IsDecreasingf(t, []float{2, 1}, "error message %s", "formatted")
// assert.IsDecreasingf(t, []string{"b", "a"}, "error message %s", "formatted")
func IsDecreasingf(t TestingT, object interface{}, msg string, args ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
return IsDecreasing(t, object, append([]interface{}{msg}, args...)...)
}
// IsIncreasingf asserts that the collection is increasing
//
// assert.IsIncreasingf(t, []int{1, 2, 3}, "error message %s", "formatted")
// assert.IsIncreasingf(t, []float{1, 2}, "error message %s", "formatted")
// assert.IsIncreasingf(t, []string{"a", "b"}, "error message %s", "formatted")
func IsIncreasingf(t TestingT, object interface{}, msg string, args ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
return IsIncreasing(t, object, append([]interface{}{msg}, args...)...)
}
// IsNonDecreasingf asserts that the collection is not decreasing
//
// assert.IsNonDecreasingf(t, []int{1, 1, 2}, "error message %s", "formatted")
// assert.IsNonDecreasingf(t, []float{1, 2}, "error message %s", "formatted")
// assert.IsNonDecreasingf(t, []string{"a", "b"}, "error message %s", "formatted")
func IsNonDecreasingf(t TestingT, object interface{}, msg string, args ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
return IsNonDecreasing(t, object, append([]interface{}{msg}, args...)...)
}
// IsNonIncreasingf asserts that the collection is not increasing
//
// assert.IsNonIncreasingf(t, []int{2, 1, 1}, "error message %s", "formatted")
// assert.IsNonIncreasingf(t, []float{2, 1}, "error message %s", "formatted")
// assert.IsNonIncreasingf(t, []string{"b", "a"}, "error message %s", "formatted")
func IsNonIncreasingf(t TestingT, object interface{}, msg string, args ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
return IsNonIncreasing(t, object, append([]interface{}{msg}, args...)...)
}
// IsTypef asserts that the specified objects are of the same type.
func IsTypef(t TestingT, expectedType interface{}, object interface{}, msg string, args ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
return IsType(t, expectedType, object, append([]interface{}{msg}, args...)...)
}
// JSONEqf asserts that two JSON strings are equivalent.
//
// assert.JSONEqf(t, `{"hello": "world", "foo": "bar"}`, `{"foo": "bar", "hello": "world"}`, "error message %s", "formatted")
func JSONEqf(t TestingT, expected string, actual string, msg string, args ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
return JSONEq(t, expected, actual, append([]interface{}{msg}, args...)...)
}
// Lenf asserts that the specified object has specific length.
// Lenf also fails if the object has a type that len() not accept.
//
// assert.Lenf(t, mySlice, 3, "error message %s", "formatted")
func Lenf(t TestingT, object interface{}, length int, msg string, args ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
return Len(t, object, length, append([]interface{}{msg}, args...)...)
}
// Lessf asserts that the first element is less than the second
//
// assert.Lessf(t, 1, 2, "error message %s", "formatted")
// assert.Lessf(t, float64(1), float64(2), "error message %s", "formatted")
// assert.Lessf(t, "a", "b", "error message %s", "formatted")
func Lessf(t TestingT, e1 interface{}, e2 interface{}, msg string, args ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
return Less(t, e1, e2, append([]interface{}{msg}, args...)...)
}
// LessOrEqualf asserts that the first element is less than or equal to the second
//
// assert.LessOrEqualf(t, 1, 2, "error message %s", "formatted")
// assert.LessOrEqualf(t, 2, 2, "error message %s", "formatted")
// assert.LessOrEqualf(t, "a", "b", "error message %s", "formatted")
// assert.LessOrEqualf(t, "b", "b", "error message %s", "formatted")
func LessOrEqualf(t TestingT, e1 interface{}, e2 interface{}, msg string, args ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
return LessOrEqual(t, e1, e2, append([]interface{}{msg}, args...)...)
}
// Negativef asserts that the specified element is negative
//
// assert.Negativef(t, -1, "error message %s", "formatted")
// assert.Negativef(t, -1.23, "error message %s", "formatted")
func Negativef(t TestingT, e interface{}, msg string, args ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
return Negative(t, e, append([]interface{}{msg}, args...)...)
}
// Neverf asserts that the given condition doesn't satisfy in waitFor time,
// periodically checking the target function each tick.
//
// assert.Neverf(t, func() bool { return false; }, time.Second, 10*time.Millisecond, "error message %s", "formatted")
func Neverf(t TestingT, condition func() bool, waitFor time.Duration, tick time.Duration, msg string, args ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
return Never(t, condition, waitFor, tick, append([]interface{}{msg}, args...)...)
}
// Nilf asserts that the specified object is nil.
//
// assert.Nilf(t, err, "error message %s", "formatted")
func Nilf(t TestingT, object interface{}, msg string, args ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
return Nil(t, object, append([]interface{}{msg}, args...)...)
}
// NoDirExistsf checks whether a directory does not exist in the given path.
// It fails if the path points to an existing _directory_ only.
func NoDirExistsf(t TestingT, path string, msg string, args ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
return NoDirExists(t, path, append([]interface{}{msg}, args...)...)
}
// NoErrorf asserts that a function returned no error (i.e. `nil`).
//
// actualObj, err := SomeFunction()
// if assert.NoErrorf(t, err, "error message %s", "formatted") {
// assert.Equal(t, expectedObj, actualObj)
// }
func NoErrorf(t TestingT, err error, msg string, args ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
return NoError(t, err, append([]interface{}{msg}, args...)...)
}
// NoFileExistsf checks whether a file does not exist in a given path. It fails
// if the path points to an existing _file_ only.
func NoFileExistsf(t TestingT, path string, msg string, args ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
return NoFileExists(t, path, append([]interface{}{msg}, args...)...)
}
// NotContainsf asserts that the specified string, list(array, slice...) or map does NOT contain the
// specified substring or element.
//
// assert.NotContainsf(t, "Hello World", "Earth", "error message %s", "formatted")
// assert.NotContainsf(t, ["Hello", "World"], "Earth", "error message %s", "formatted")
// assert.NotContainsf(t, {"Hello": "World"}, "Earth", "error message %s", "formatted")
func NotContainsf(t TestingT, s interface{}, contains interface{}, msg string, args ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
return NotContains(t, s, contains, append([]interface{}{msg}, args...)...)
}
// NotEmptyf asserts that the specified object is NOT empty. I.e. not nil, "", false, 0 or either
// a slice or a channel with len == 0.
//
// if assert.NotEmptyf(t, obj, "error message %s", "formatted") {
// assert.Equal(t, "two", obj[1])
// }
func NotEmptyf(t TestingT, object interface{}, msg string, args ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
return NotEmpty(t, object, append([]interface{}{msg}, args...)...)
}
// NotEqualf asserts that the specified values are NOT equal.
//
// assert.NotEqualf(t, obj1, obj2, "error message %s", "formatted")
//
// Pointer variable equality is determined based on the equality of the
// referenced values (as opposed to the memory addresses).
func NotEqualf(t TestingT, expected interface{}, actual interface{}, msg string, args ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
return NotEqual(t, expected, actual, append([]interface{}{msg}, args...)...)
}
// NotEqualValuesf asserts that two objects are not equal even when converted to the same type
//
// assert.NotEqualValuesf(t, obj1, obj2, "error message %s", "formatted")
func NotEqualValuesf(t TestingT, expected interface{}, actual interface{}, msg string, args ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
return NotEqualValues(t, expected, actual, append([]interface{}{msg}, args...)...)
}
// NotErrorIsf asserts that at none of the errors in err's chain matches target.
// This is a wrapper for errors.Is.
func NotErrorIsf(t TestingT, err error, target error, msg string, args ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
return NotErrorIs(t, err, target, append([]interface{}{msg}, args...)...)
}
// NotNilf asserts that the specified object is not nil.
//
// assert.NotNilf(t, err, "error message %s", "formatted")
func NotNilf(t TestingT, object interface{}, msg string, args ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
return NotNil(t, object, append([]interface{}{msg}, args...)...)
}
// NotPanicsf asserts that the code inside the specified PanicTestFunc does NOT panic.
//
// assert.NotPanicsf(t, func(){ RemainCalm() }, "error message %s", "formatted")
func NotPanicsf(t TestingT, f PanicTestFunc, msg string, args ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
return NotPanics(t, f, append([]interface{}{msg}, args...)...)
}
// NotRegexpf asserts that a specified regexp does not match a string.
//
// assert.NotRegexpf(t, regexp.MustCompile("starts"), "it's starting", "error message %s", "formatted")
// assert.NotRegexpf(t, "^start", "it's not starting", "error message %s", "formatted")
func NotRegexpf(t TestingT, rx interface{}, str interface{}, msg string, args ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
return NotRegexp(t, rx, str, append([]interface{}{msg}, args...)...)
}
// NotSamef asserts that two pointers do not reference the same object.
//
// assert.NotSamef(t, ptr1, ptr2, "error message %s", "formatted")
//
// Both arguments must be pointer variables. Pointer variable sameness is
// determined based on the equality of both type and value.
func NotSamef(t TestingT, expected interface{}, actual interface{}, msg string, args ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
return NotSame(t, expected, actual, append([]interface{}{msg}, args...)...)
}
// NotSubsetf asserts that the specified list(array, slice...) contains not all
// elements given in the specified subset(array, slice...).
//
// assert.NotSubsetf(t, [1, 3, 4], [1, 2], "But [1, 3, 4] does not contain [1, 2]", "error message %s", "formatted")
func NotSubsetf(t TestingT, list interface{}, subset interface{}, msg string, args ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
return NotSubset(t, list, subset, append([]interface{}{msg}, args...)...)
}
// NotZerof asserts that i is not the zero value for its type.
func NotZerof(t TestingT, i interface{}, msg string, args ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
return NotZero(t, i, append([]interface{}{msg}, args...)...)
}
// Panicsf asserts that the code inside the specified PanicTestFunc panics.
//
// assert.Panicsf(t, func(){ GoCrazy() }, "error message %s", "formatted")
func Panicsf(t TestingT, f PanicTestFunc, msg string, args ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
return Panics(t, f, append([]interface{}{msg}, args...)...)
}
// PanicsWithErrorf asserts that the code inside the specified PanicTestFunc
// panics, and that the recovered panic value is an error that satisfies the
// EqualError comparison.
//
// assert.PanicsWithErrorf(t, "crazy error", func(){ GoCrazy() }, "error message %s", "formatted")
func PanicsWithErrorf(t TestingT, errString string, f PanicTestFunc, msg string, args ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
return PanicsWithError(t, errString, f, append([]interface{}{msg}, args...)...)
}
// PanicsWithValuef asserts that the code inside the specified PanicTestFunc panics, and that
// the recovered panic value equals the expected panic value.
//
// assert.PanicsWithValuef(t, "crazy error", func(){ GoCrazy() }, "error message %s", "formatted")
func PanicsWithValuef(t TestingT, expected interface{}, f PanicTestFunc, msg string, args ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
return PanicsWithValue(t, expected, f, append([]interface{}{msg}, args...)...)
}
// Positivef asserts that the specified element is positive
//
// assert.Positivef(t, 1, "error message %s", "formatted")
// assert.Positivef(t, 1.23, "error message %s", "formatted")
func Positivef(t TestingT, e interface{}, msg string, args ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
return Positive(t, e, append([]interface{}{msg}, args...)...)
}
// Regexpf asserts that a specified regexp matches a string.
//
// assert.Regexpf(t, regexp.MustCompile("start"), "it's starting", "error message %s", "formatted")
// assert.Regexpf(t, "start...$", "it's not starting", "error message %s", "formatted")
func Regexpf(t TestingT, rx interface{}, str interface{}, msg string, args ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
return Regexp(t, rx, str, append([]interface{}{msg}, args...)...)
}
// Samef asserts that two pointers reference the same object.
//
// assert.Samef(t, ptr1, ptr2, "error message %s", "formatted")
//
// Both arguments must be pointer variables. Pointer variable sameness is
// determined based on the equality of both type and value.
func Samef(t TestingT, expected interface{}, actual interface{}, msg string, args ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
return Same(t, expected, actual, append([]interface{}{msg}, args...)...)
}
// Subsetf asserts that the specified list(array, slice...) contains all
// elements given in the specified subset(array, slice...).
//
// assert.Subsetf(t, [1, 2, 3], [1, 2], "But [1, 2, 3] does contain [1, 2]", "error message %s", "formatted")
func Subsetf(t TestingT, list interface{}, subset interface{}, msg string, args ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
return Subset(t, list, subset, append([]interface{}{msg}, args...)...)
}
// Truef asserts that the specified value is true.
//
// assert.Truef(t, myBool, "error message %s", "formatted")
func Truef(t TestingT, value bool, msg string, args ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
return True(t, value, append([]interface{}{msg}, args...)...)
}
// WithinDurationf asserts that the two times are within duration delta of each other.
//
// assert.WithinDurationf(t, time.Now(), time.Now(), 10*time.Second, "error message %s", "formatted")
func WithinDurationf(t TestingT, expected time.Time, actual time.Time, delta time.Duration, msg string, args ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
return WithinDuration(t, expected, actual, delta, append([]interface{}{msg}, args...)...)
}
// YAMLEqf asserts that two YAML strings are equivalent.
func YAMLEqf(t TestingT, expected string, actual string, msg string, args ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
return YAMLEq(t, expected, actual, append([]interface{}{msg}, args...)...)
}
// Zerof asserts that i is the zero value for its type.
func Zerof(t TestingT, i interface{}, msg string, args ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
return Zero(t, i, append([]interface{}{msg}, args...)...)
}

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{{.CommentFormat}}
func {{.DocInfo.Name}}f(t TestingT, {{.ParamsFormat}}) bool {
if h, ok := t.(tHelper); ok { h.Helper() }
return {{.DocInfo.Name}}(t, {{.ForwardedParamsFormat}})
}

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tests/vendor/github.com/stretchr/testify/assert/assertion_forward.go.tmpl generated vendored Normal file
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{{.CommentWithoutT "a"}}
func (a *Assertions) {{.DocInfo.Name}}({{.Params}}) bool {
if h, ok := a.t.(tHelper); ok { h.Helper() }
return {{.DocInfo.Name}}(a.t, {{.ForwardedParams}})
}

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package assert
import (
"fmt"
"reflect"
)
// isOrdered checks that collection contains orderable elements.
func isOrdered(t TestingT, object interface{}, allowedComparesResults []CompareType, failMessage string, msgAndArgs ...interface{}) bool {
objKind := reflect.TypeOf(object).Kind()
if objKind != reflect.Slice && objKind != reflect.Array {
return false
}
objValue := reflect.ValueOf(object)
objLen := objValue.Len()
if objLen <= 1 {
return true
}
value := objValue.Index(0)
valueInterface := value.Interface()
firstValueKind := value.Kind()
for i := 1; i < objLen; i++ {
prevValue := value
prevValueInterface := valueInterface
value = objValue.Index(i)
valueInterface = value.Interface()
compareResult, isComparable := compare(prevValueInterface, valueInterface, firstValueKind)
if !isComparable {
return Fail(t, fmt.Sprintf("Can not compare type \"%s\" and \"%s\"", reflect.TypeOf(value), reflect.TypeOf(prevValue)), msgAndArgs...)
}
if !containsValue(allowedComparesResults, compareResult) {
return Fail(t, fmt.Sprintf(failMessage, prevValue, value), msgAndArgs...)
}
}
return true
}
// IsIncreasing asserts that the collection is increasing
//
// assert.IsIncreasing(t, []int{1, 2, 3})
// assert.IsIncreasing(t, []float{1, 2})
// assert.IsIncreasing(t, []string{"a", "b"})
func IsIncreasing(t TestingT, object interface{}, msgAndArgs ...interface{}) bool {
return isOrdered(t, object, []CompareType{compareLess}, "\"%v\" is not less than \"%v\"", msgAndArgs...)
}
// IsNonIncreasing asserts that the collection is not increasing
//
// assert.IsNonIncreasing(t, []int{2, 1, 1})
// assert.IsNonIncreasing(t, []float{2, 1})
// assert.IsNonIncreasing(t, []string{"b", "a"})
func IsNonIncreasing(t TestingT, object interface{}, msgAndArgs ...interface{}) bool {
return isOrdered(t, object, []CompareType{compareEqual, compareGreater}, "\"%v\" is not greater than or equal to \"%v\"", msgAndArgs...)
}
// IsDecreasing asserts that the collection is decreasing
//
// assert.IsDecreasing(t, []int{2, 1, 0})
// assert.IsDecreasing(t, []float{2, 1})
// assert.IsDecreasing(t, []string{"b", "a"})
func IsDecreasing(t TestingT, object interface{}, msgAndArgs ...interface{}) bool {
return isOrdered(t, object, []CompareType{compareGreater}, "\"%v\" is not greater than \"%v\"", msgAndArgs...)
}
// IsNonDecreasing asserts that the collection is not decreasing
//
// assert.IsNonDecreasing(t, []int{1, 1, 2})
// assert.IsNonDecreasing(t, []float{1, 2})
// assert.IsNonDecreasing(t, []string{"a", "b"})
func IsNonDecreasing(t TestingT, object interface{}, msgAndArgs ...interface{}) bool {
return isOrdered(t, object, []CompareType{compareLess, compareEqual}, "\"%v\" is not less than or equal to \"%v\"", msgAndArgs...)
}

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// Package assert provides a set of comprehensive testing tools for use with the normal Go testing system.
//
// Example Usage
//
// The following is a complete example using assert in a standard test function:
// import (
// "testing"
// "github.com/stretchr/testify/assert"
// )
//
// func TestSomething(t *testing.T) {
//
// var a string = "Hello"
// var b string = "Hello"
//
// assert.Equal(t, a, b, "The two words should be the same.")
//
// }
//
// if you assert many times, use the format below:
//
// import (
// "testing"
// "github.com/stretchr/testify/assert"
// )
//
// func TestSomething(t *testing.T) {
// assert := assert.New(t)
//
// var a string = "Hello"
// var b string = "Hello"
//
// assert.Equal(a, b, "The two words should be the same.")
// }
//
// Assertions
//
// Assertions allow you to easily write test code, and are global funcs in the `assert` package.
// All assertion functions take, as the first argument, the `*testing.T` object provided by the
// testing framework. This allows the assertion funcs to write the failings and other details to
// the correct place.
//
// Every assertion function also takes an optional string message as the final argument,
// allowing custom error messages to be appended to the message the assertion method outputs.
package assert

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tests/vendor/github.com/stretchr/testify/assert/errors.go generated vendored Normal file
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package assert
import (
"errors"
)
// AnError is an error instance useful for testing. If the code does not care
// about error specifics, and only needs to return the error for example, this
// error should be used to make the test code more readable.
var AnError = errors.New("assert.AnError general error for testing")

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