mirror of
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Add github.com/liggitt/tabwriter
This commit is contained in:
parent
02e6c18c56
commit
096186afb5
4
Godeps/Godeps.json
generated
4
Godeps/Godeps.json
generated
@ -2445,6 +2445,10 @@
|
||||
"ImportPath": "github.com/libopenstorage/openstorage/volume",
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"Rev": "093a0c3888753c2056e7373183693d670c6bba01"
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},
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{
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"ImportPath": "github.com/liggitt/tabwriter",
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"Rev": "89fcab3d43de07060e4fd4c1547430ed57e87f24"
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},
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{
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"ImportPath": "github.com/magiconair/properties",
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"Comment": "v1.7.0-4-g61b492c03cf472",
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|
35
Godeps/LICENSES
generated
35
Godeps/LICENSES
generated
@ -74953,6 +74953,41 @@ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLI
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================================================================================
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================================================================================
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= vendor/github.com/liggitt/tabwriter licensed under: =
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Copyright (c) 2009 The Go Authors. All rights reserved.
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|
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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.
|
||||
* Neither the name of Google Inc. nor the names of its
|
||||
contributors may be used to endorse or promote products derived from
|
||||
this software without specific prior written permission.
|
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|
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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
|
||||
OWNER 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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= vendor/github.com/liggitt/tabwriter/LICENSE 5d4950ecb7b26d2c5e4e7b4e0dd74707
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================================================================================
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================================================================================
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= vendor/github.com/magiconair/properties licensed under: =
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|
1
vendor/BUILD
vendored
1
vendor/BUILD
vendored
@ -299,6 +299,7 @@ filegroup(
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"//vendor/github.com/libopenstorage/openstorage/pkg/parser:all-srcs",
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"//vendor/github.com/libopenstorage/openstorage/pkg/units:all-srcs",
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"//vendor/github.com/libopenstorage/openstorage/volume:all-srcs",
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"//vendor/github.com/liggitt/tabwriter:all-srcs",
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"//vendor/github.com/magiconair/properties:all-srcs",
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"//vendor/github.com/mailru/easyjson/buffer:all-srcs",
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"//vendor/github.com/mailru/easyjson/jlexer:all-srcs",
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|
11
vendor/github.com/liggitt/tabwriter/.travis.yml
generated
vendored
Normal file
11
vendor/github.com/liggitt/tabwriter/.travis.yml
generated
vendored
Normal file
@ -0,0 +1,11 @@
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language: go
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go:
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- "1.8"
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- "1.9"
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- "1.10"
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- "1.11"
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- "1.12"
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- master
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script: go test -v ./...
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23
vendor/github.com/liggitt/tabwriter/BUILD
generated
vendored
Normal file
23
vendor/github.com/liggitt/tabwriter/BUILD
generated
vendored
Normal file
@ -0,0 +1,23 @@
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load("@io_bazel_rules_go//go:def.bzl", "go_library")
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go_library(
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name = "go_default_library",
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srcs = ["tabwriter.go"],
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importmap = "k8s.io/kubernetes/vendor/github.com/liggitt/tabwriter",
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importpath = "github.com/liggitt/tabwriter",
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visibility = ["//visibility:public"],
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)
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filegroup(
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name = "package-srcs",
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srcs = glob(["**"]),
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tags = ["automanaged"],
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visibility = ["//visibility:private"],
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)
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filegroup(
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name = "all-srcs",
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srcs = [":package-srcs"],
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tags = ["automanaged"],
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visibility = ["//visibility:public"],
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)
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27
vendor/github.com/liggitt/tabwriter/LICENSE
generated
vendored
Normal file
27
vendor/github.com/liggitt/tabwriter/LICENSE
generated
vendored
Normal file
@ -0,0 +1,27 @@
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Copyright (c) 2009 The Go Authors. All rights reserved.
|
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|
||||
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.
|
||||
* Neither the name of Google Inc. nor the names of its
|
||||
contributors may 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
|
||||
OWNER 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.
|
7
vendor/github.com/liggitt/tabwriter/README.md
generated
vendored
Normal file
7
vendor/github.com/liggitt/tabwriter/README.md
generated
vendored
Normal file
@ -0,0 +1,7 @@
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This repo is a drop-in replacement for the golang [text/tabwriter](https://golang.org/pkg/text/tabwriter/) package.
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It is based on that package at [cf2c2ea8](https://github.com/golang/go/tree/cf2c2ea89d09d486bb018b1817c5874388038c3a/src/text/tabwriter) and inherits its license.
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The following additional features are supported:
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* `RememberWidths` flag allows remembering maximum widths seen per column even after Flush() is called.
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* `RememberedWidths() []int` and `SetRememberedWidths([]int) *Writer` allows obtaining and transferring remembered column width between writers.
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637
vendor/github.com/liggitt/tabwriter/tabwriter.go
generated
vendored
Normal file
637
vendor/github.com/liggitt/tabwriter/tabwriter.go
generated
vendored
Normal file
@ -0,0 +1,637 @@
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// Copyright 2009 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Package tabwriter implements a write filter (tabwriter.Writer) that
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// translates tabbed columns in input into properly aligned text.
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//
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// It is a drop-in replacement for the golang text/tabwriter package (https://golang.org/pkg/text/tabwriter),
|
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// based on that package at https://github.com/golang/go/tree/cf2c2ea89d09d486bb018b1817c5874388038c3a
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// with support for additional features.
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//
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// The package is using the Elastic Tabstops algorithm described at
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// http://nickgravgaard.com/elastictabstops/index.html.
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package tabwriter
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import (
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"io"
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"unicode/utf8"
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)
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// ----------------------------------------------------------------------------
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// Filter implementation
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// A cell represents a segment of text terminated by tabs or line breaks.
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// The text itself is stored in a separate buffer; cell only describes the
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// segment's size in bytes, its width in runes, and whether it's an htab
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// ('\t') terminated cell.
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//
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type cell struct {
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size int // cell size in bytes
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width int // cell width in runes
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||||
htab bool // true if the cell is terminated by an htab ('\t')
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}
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||||
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||||
// A Writer is a filter that inserts padding around tab-delimited
|
||||
// columns in its input to align them in the output.
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||||
//
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||||
// The Writer treats incoming bytes as UTF-8-encoded text consisting
|
||||
// of cells terminated by horizontal ('\t') or vertical ('\v') tabs,
|
||||
// and newline ('\n') or formfeed ('\f') characters; both newline and
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||||
// formfeed act as line breaks.
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||||
//
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||||
// Tab-terminated cells in contiguous lines constitute a column. The
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||||
// Writer inserts padding as needed to make all cells in a column have
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// the same width, effectively aligning the columns. It assumes that
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// all characters have the same width, except for tabs for which a
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||||
// tabwidth must be specified. Column cells must be tab-terminated, not
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||||
// tab-separated: non-tab terminated trailing text at the end of a line
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||||
// forms a cell but that cell is not part of an aligned column.
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||||
// For instance, in this example (where | stands for a horizontal tab):
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||||
//
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||||
// aaaa|bbb|d
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||||
// aa |b |dd
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||||
// a |
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||||
// aa |cccc|eee
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||||
//
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||||
// the b and c are in distinct columns (the b column is not contiguous
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||||
// all the way). The d and e are not in a column at all (there's no
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||||
// terminating tab, nor would the column be contiguous).
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||||
//
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||||
// The Writer assumes that all Unicode code points have the same width;
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||||
// this may not be true in some fonts or if the string contains combining
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||||
// characters.
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||||
//
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||||
// If DiscardEmptyColumns is set, empty columns that are terminated
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||||
// entirely by vertical (or "soft") tabs are discarded. Columns
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||||
// terminated by horizontal (or "hard") tabs are not affected by
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||||
// this flag.
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||||
//
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||||
// If a Writer is configured to filter HTML, HTML tags and entities
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||||
// are passed through. The widths of tags and entities are
|
||||
// assumed to be zero (tags) and one (entities) for formatting purposes.
|
||||
//
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||||
// A segment of text may be escaped by bracketing it with Escape
|
||||
// characters. The tabwriter passes escaped text segments through
|
||||
// unchanged. In particular, it does not interpret any tabs or line
|
||||
// breaks within the segment. If the StripEscape flag is set, the
|
||||
// Escape characters are stripped from the output; otherwise they
|
||||
// are passed through as well. For the purpose of formatting, the
|
||||
// width of the escaped text is always computed excluding the Escape
|
||||
// characters.
|
||||
//
|
||||
// The formfeed character acts like a newline but it also terminates
|
||||
// all columns in the current line (effectively calling Flush). Tab-
|
||||
// terminated cells in the next line start new columns. Unless found
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||||
// inside an HTML tag or inside an escaped text segment, formfeed
|
||||
// characters appear as newlines in the output.
|
||||
//
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||||
// The Writer must buffer input internally, because proper spacing
|
||||
// of one line may depend on the cells in future lines. Clients must
|
||||
// call Flush when done calling Write.
|
||||
//
|
||||
type Writer struct {
|
||||
// configuration
|
||||
output io.Writer
|
||||
minwidth int
|
||||
tabwidth int
|
||||
padding int
|
||||
padbytes [8]byte
|
||||
flags uint
|
||||
|
||||
// current state
|
||||
buf []byte // collected text excluding tabs or line breaks
|
||||
pos int // buffer position up to which cell.width of incomplete cell has been computed
|
||||
cell cell // current incomplete cell; cell.width is up to buf[pos] excluding ignored sections
|
||||
endChar byte // terminating char of escaped sequence (Escape for escapes, '>', ';' for HTML tags/entities, or 0)
|
||||
lines [][]cell // list of lines; each line is a list of cells
|
||||
widths []int // list of column widths in runes - re-used during formatting
|
||||
|
||||
maxwidths []int // list of max column widths in runes
|
||||
}
|
||||
|
||||
// addLine adds a new line.
|
||||
// flushed is a hint indicating whether the underlying writer was just flushed.
|
||||
// If so, the previous line is not likely to be a good indicator of the new line's cells.
|
||||
func (b *Writer) addLine(flushed bool) {
|
||||
// Grow slice instead of appending,
|
||||
// as that gives us an opportunity
|
||||
// to re-use an existing []cell.
|
||||
if n := len(b.lines) + 1; n <= cap(b.lines) {
|
||||
b.lines = b.lines[:n]
|
||||
b.lines[n-1] = b.lines[n-1][:0]
|
||||
} else {
|
||||
b.lines = append(b.lines, nil)
|
||||
}
|
||||
|
||||
if !flushed {
|
||||
// The previous line is probably a good indicator
|
||||
// of how many cells the current line will have.
|
||||
// If the current line's capacity is smaller than that,
|
||||
// abandon it and make a new one.
|
||||
if n := len(b.lines); n >= 2 {
|
||||
if prev := len(b.lines[n-2]); prev > cap(b.lines[n-1]) {
|
||||
b.lines[n-1] = make([]cell, 0, prev)
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Reset the current state.
|
||||
func (b *Writer) reset() {
|
||||
b.buf = b.buf[:0]
|
||||
b.pos = 0
|
||||
b.cell = cell{}
|
||||
b.endChar = 0
|
||||
b.lines = b.lines[0:0]
|
||||
b.widths = b.widths[0:0]
|
||||
b.addLine(true)
|
||||
}
|
||||
|
||||
// Internal representation (current state):
|
||||
//
|
||||
// - all text written is appended to buf; tabs and line breaks are stripped away
|
||||
// - at any given time there is a (possibly empty) incomplete cell at the end
|
||||
// (the cell starts after a tab or line break)
|
||||
// - cell.size is the number of bytes belonging to the cell so far
|
||||
// - cell.width is text width in runes of that cell from the start of the cell to
|
||||
// position pos; html tags and entities are excluded from this width if html
|
||||
// filtering is enabled
|
||||
// - the sizes and widths of processed text are kept in the lines list
|
||||
// which contains a list of cells for each line
|
||||
// - the widths list is a temporary list with current widths used during
|
||||
// formatting; it is kept in Writer because it's re-used
|
||||
//
|
||||
// |<---------- size ---------->|
|
||||
// | |
|
||||
// |<- width ->|<- ignored ->| |
|
||||
// | | | |
|
||||
// [---processed---tab------------<tag>...</tag>...]
|
||||
// ^ ^ ^
|
||||
// | | |
|
||||
// buf start of incomplete cell pos
|
||||
|
||||
// Formatting can be controlled with these flags.
|
||||
const (
|
||||
// Ignore html tags and treat entities (starting with '&'
|
||||
// and ending in ';') as single characters (width = 1).
|
||||
FilterHTML uint = 1 << iota
|
||||
|
||||
// Strip Escape characters bracketing escaped text segments
|
||||
// instead of passing them through unchanged with the text.
|
||||
StripEscape
|
||||
|
||||
// Force right-alignment of cell content.
|
||||
// Default is left-alignment.
|
||||
AlignRight
|
||||
|
||||
// Handle empty columns as if they were not present in
|
||||
// the input in the first place.
|
||||
DiscardEmptyColumns
|
||||
|
||||
// Always use tabs for indentation columns (i.e., padding of
|
||||
// leading empty cells on the left) independent of padchar.
|
||||
TabIndent
|
||||
|
||||
// Print a vertical bar ('|') between columns (after formatting).
|
||||
// Discarded columns appear as zero-width columns ("||").
|
||||
Debug
|
||||
|
||||
// Remember maximum widths seen per column even after Flush() is called.
|
||||
RememberWidths
|
||||
)
|
||||
|
||||
// A Writer must be initialized with a call to Init. The first parameter (output)
|
||||
// specifies the filter output. The remaining parameters control the formatting:
|
||||
//
|
||||
// minwidth minimal cell width including any padding
|
||||
// tabwidth width of tab characters (equivalent number of spaces)
|
||||
// padding padding added to a cell before computing its width
|
||||
// padchar ASCII char used for padding
|
||||
// if padchar == '\t', the Writer will assume that the
|
||||
// width of a '\t' in the formatted output is tabwidth,
|
||||
// and cells are left-aligned independent of align_left
|
||||
// (for correct-looking results, tabwidth must correspond
|
||||
// to the tab width in the viewer displaying the result)
|
||||
// flags formatting control
|
||||
//
|
||||
func (b *Writer) Init(output io.Writer, minwidth, tabwidth, padding int, padchar byte, flags uint) *Writer {
|
||||
if minwidth < 0 || tabwidth < 0 || padding < 0 {
|
||||
panic("negative minwidth, tabwidth, or padding")
|
||||
}
|
||||
b.output = output
|
||||
b.minwidth = minwidth
|
||||
b.tabwidth = tabwidth
|
||||
b.padding = padding
|
||||
for i := range b.padbytes {
|
||||
b.padbytes[i] = padchar
|
||||
}
|
||||
if padchar == '\t' {
|
||||
// tab padding enforces left-alignment
|
||||
flags &^= AlignRight
|
||||
}
|
||||
b.flags = flags
|
||||
|
||||
b.reset()
|
||||
|
||||
return b
|
||||
}
|
||||
|
||||
// debugging support (keep code around)
|
||||
func (b *Writer) dump() {
|
||||
pos := 0
|
||||
for i, line := range b.lines {
|
||||
print("(", i, ") ")
|
||||
for _, c := range line {
|
||||
print("[", string(b.buf[pos:pos+c.size]), "]")
|
||||
pos += c.size
|
||||
}
|
||||
print("\n")
|
||||
}
|
||||
print("\n")
|
||||
}
|
||||
|
||||
// local error wrapper so we can distinguish errors we want to return
|
||||
// as errors from genuine panics (which we don't want to return as errors)
|
||||
type osError struct {
|
||||
err error
|
||||
}
|
||||
|
||||
func (b *Writer) write0(buf []byte) {
|
||||
n, err := b.output.Write(buf)
|
||||
if n != len(buf) && err == nil {
|
||||
err = io.ErrShortWrite
|
||||
}
|
||||
if err != nil {
|
||||
panic(osError{err})
|
||||
}
|
||||
}
|
||||
|
||||
func (b *Writer) writeN(src []byte, n int) {
|
||||
for n > len(src) {
|
||||
b.write0(src)
|
||||
n -= len(src)
|
||||
}
|
||||
b.write0(src[0:n])
|
||||
}
|
||||
|
||||
var (
|
||||
newline = []byte{'\n'}
|
||||
tabs = []byte("\t\t\t\t\t\t\t\t")
|
||||
)
|
||||
|
||||
func (b *Writer) writePadding(textw, cellw int, useTabs bool) {
|
||||
if b.padbytes[0] == '\t' || useTabs {
|
||||
// padding is done with tabs
|
||||
if b.tabwidth == 0 {
|
||||
return // tabs have no width - can't do any padding
|
||||
}
|
||||
// make cellw the smallest multiple of b.tabwidth
|
||||
cellw = (cellw + b.tabwidth - 1) / b.tabwidth * b.tabwidth
|
||||
n := cellw - textw // amount of padding
|
||||
if n < 0 {
|
||||
panic("internal error")
|
||||
}
|
||||
b.writeN(tabs, (n+b.tabwidth-1)/b.tabwidth)
|
||||
return
|
||||
}
|
||||
|
||||
// padding is done with non-tab characters
|
||||
b.writeN(b.padbytes[0:], cellw-textw)
|
||||
}
|
||||
|
||||
var vbar = []byte{'|'}
|
||||
|
||||
func (b *Writer) writeLines(pos0 int, line0, line1 int) (pos int) {
|
||||
pos = pos0
|
||||
for i := line0; i < line1; i++ {
|
||||
line := b.lines[i]
|
||||
|
||||
// if TabIndent is set, use tabs to pad leading empty cells
|
||||
useTabs := b.flags&TabIndent != 0
|
||||
|
||||
for j, c := range line {
|
||||
if j > 0 && b.flags&Debug != 0 {
|
||||
// indicate column break
|
||||
b.write0(vbar)
|
||||
}
|
||||
|
||||
if c.size == 0 {
|
||||
// empty cell
|
||||
if j < len(b.widths) {
|
||||
b.writePadding(c.width, b.widths[j], useTabs)
|
||||
}
|
||||
} else {
|
||||
// non-empty cell
|
||||
useTabs = false
|
||||
if b.flags&AlignRight == 0 { // align left
|
||||
b.write0(b.buf[pos : pos+c.size])
|
||||
pos += c.size
|
||||
if j < len(b.widths) {
|
||||
b.writePadding(c.width, b.widths[j], false)
|
||||
}
|
||||
} else { // align right
|
||||
if j < len(b.widths) {
|
||||
b.writePadding(c.width, b.widths[j], false)
|
||||
}
|
||||
b.write0(b.buf[pos : pos+c.size])
|
||||
pos += c.size
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if i+1 == len(b.lines) {
|
||||
// last buffered line - we don't have a newline, so just write
|
||||
// any outstanding buffered data
|
||||
b.write0(b.buf[pos : pos+b.cell.size])
|
||||
pos += b.cell.size
|
||||
} else {
|
||||
// not the last line - write newline
|
||||
b.write0(newline)
|
||||
}
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
// Format the text between line0 and line1 (excluding line1); pos
|
||||
// is the buffer position corresponding to the beginning of line0.
|
||||
// Returns the buffer position corresponding to the beginning of
|
||||
// line1 and an error, if any.
|
||||
//
|
||||
func (b *Writer) format(pos0 int, line0, line1 int) (pos int) {
|
||||
pos = pos0
|
||||
column := len(b.widths)
|
||||
for this := line0; this < line1; this++ {
|
||||
line := b.lines[this]
|
||||
|
||||
if column >= len(line)-1 {
|
||||
continue
|
||||
}
|
||||
// cell exists in this column => this line
|
||||
// has more cells than the previous line
|
||||
// (the last cell per line is ignored because cells are
|
||||
// tab-terminated; the last cell per line describes the
|
||||
// text before the newline/formfeed and does not belong
|
||||
// to a column)
|
||||
|
||||
// print unprinted lines until beginning of block
|
||||
pos = b.writeLines(pos, line0, this)
|
||||
line0 = this
|
||||
|
||||
// column block begin
|
||||
width := b.minwidth // minimal column width
|
||||
discardable := true // true if all cells in this column are empty and "soft"
|
||||
for ; this < line1; this++ {
|
||||
line = b.lines[this]
|
||||
if column >= len(line)-1 {
|
||||
break
|
||||
}
|
||||
// cell exists in this column
|
||||
c := line[column]
|
||||
// update width
|
||||
if w := c.width + b.padding; w > width {
|
||||
width = w
|
||||
}
|
||||
// update discardable
|
||||
if c.width > 0 || c.htab {
|
||||
discardable = false
|
||||
}
|
||||
}
|
||||
// column block end
|
||||
|
||||
// discard empty columns if necessary
|
||||
if discardable && b.flags&DiscardEmptyColumns != 0 {
|
||||
width = 0
|
||||
}
|
||||
|
||||
if b.flags&RememberWidths != 0 {
|
||||
if len(b.maxwidths) < len(b.widths) {
|
||||
b.maxwidths = append(b.maxwidths, b.widths[len(b.maxwidths):]...)
|
||||
}
|
||||
|
||||
switch {
|
||||
case len(b.maxwidths) == len(b.widths):
|
||||
b.maxwidths = append(b.maxwidths, width)
|
||||
case b.maxwidths[len(b.widths)] > width:
|
||||
width = b.maxwidths[len(b.widths)]
|
||||
case b.maxwidths[len(b.widths)] < width:
|
||||
b.maxwidths[len(b.widths)] = width
|
||||
}
|
||||
}
|
||||
|
||||
// format and print all columns to the right of this column
|
||||
// (we know the widths of this column and all columns to the left)
|
||||
b.widths = append(b.widths, width) // push width
|
||||
pos = b.format(pos, line0, this)
|
||||
b.widths = b.widths[0 : len(b.widths)-1] // pop width
|
||||
line0 = this
|
||||
}
|
||||
|
||||
// print unprinted lines until end
|
||||
return b.writeLines(pos, line0, line1)
|
||||
}
|
||||
|
||||
// Append text to current cell.
|
||||
func (b *Writer) append(text []byte) {
|
||||
b.buf = append(b.buf, text...)
|
||||
b.cell.size += len(text)
|
||||
}
|
||||
|
||||
// Update the cell width.
|
||||
func (b *Writer) updateWidth() {
|
||||
b.cell.width += utf8.RuneCount(b.buf[b.pos:])
|
||||
b.pos = len(b.buf)
|
||||
}
|
||||
|
||||
// To escape a text segment, bracket it with Escape characters.
|
||||
// For instance, the tab in this string "Ignore this tab: \xff\t\xff"
|
||||
// does not terminate a cell and constitutes a single character of
|
||||
// width one for formatting purposes.
|
||||
//
|
||||
// The value 0xff was chosen because it cannot appear in a valid UTF-8 sequence.
|
||||
//
|
||||
const Escape = '\xff'
|
||||
|
||||
// Start escaped mode.
|
||||
func (b *Writer) startEscape(ch byte) {
|
||||
switch ch {
|
||||
case Escape:
|
||||
b.endChar = Escape
|
||||
case '<':
|
||||
b.endChar = '>'
|
||||
case '&':
|
||||
b.endChar = ';'
|
||||
}
|
||||
}
|
||||
|
||||
// Terminate escaped mode. If the escaped text was an HTML tag, its width
|
||||
// is assumed to be zero for formatting purposes; if it was an HTML entity,
|
||||
// its width is assumed to be one. In all other cases, the width is the
|
||||
// unicode width of the text.
|
||||
//
|
||||
func (b *Writer) endEscape() {
|
||||
switch b.endChar {
|
||||
case Escape:
|
||||
b.updateWidth()
|
||||
if b.flags&StripEscape == 0 {
|
||||
b.cell.width -= 2 // don't count the Escape chars
|
||||
}
|
||||
case '>': // tag of zero width
|
||||
case ';':
|
||||
b.cell.width++ // entity, count as one rune
|
||||
}
|
||||
b.pos = len(b.buf)
|
||||
b.endChar = 0
|
||||
}
|
||||
|
||||
// Terminate the current cell by adding it to the list of cells of the
|
||||
// current line. Returns the number of cells in that line.
|
||||
//
|
||||
func (b *Writer) terminateCell(htab bool) int {
|
||||
b.cell.htab = htab
|
||||
line := &b.lines[len(b.lines)-1]
|
||||
*line = append(*line, b.cell)
|
||||
b.cell = cell{}
|
||||
return len(*line)
|
||||
}
|
||||
|
||||
func handlePanic(err *error, op string) {
|
||||
if e := recover(); e != nil {
|
||||
if nerr, ok := e.(osError); ok {
|
||||
*err = nerr.err
|
||||
return
|
||||
}
|
||||
panic("tabwriter: panic during " + op)
|
||||
}
|
||||
}
|
||||
|
||||
// RememberedWidths returns a copy of the remembered per-column maximum widths.
|
||||
// Requires use of the RememberWidths flag, and is not threadsafe.
|
||||
func (b *Writer) RememberedWidths() []int {
|
||||
retval := make([]int, len(b.maxwidths))
|
||||
copy(retval, b.maxwidths)
|
||||
return retval
|
||||
}
|
||||
|
||||
// SetRememberedWidths sets the remembered per-column maximum widths.
|
||||
// Requires use of the RememberWidths flag, and is not threadsafe.
|
||||
func (b *Writer) SetRememberedWidths(widths []int) *Writer {
|
||||
b.maxwidths = make([]int, len(widths))
|
||||
copy(b.maxwidths, widths)
|
||||
return b
|
||||
}
|
||||
|
||||
// Flush should be called after the last call to Write to ensure
|
||||
// that any data buffered in the Writer is written to output. Any
|
||||
// incomplete escape sequence at the end is considered
|
||||
// complete for formatting purposes.
|
||||
func (b *Writer) Flush() error {
|
||||
return b.flush()
|
||||
}
|
||||
|
||||
func (b *Writer) flush() (err error) {
|
||||
defer b.reset() // even in the presence of errors
|
||||
defer handlePanic(&err, "Flush")
|
||||
|
||||
// add current cell if not empty
|
||||
if b.cell.size > 0 {
|
||||
if b.endChar != 0 {
|
||||
// inside escape - terminate it even if incomplete
|
||||
b.endEscape()
|
||||
}
|
||||
b.terminateCell(false)
|
||||
}
|
||||
|
||||
// format contents of buffer
|
||||
b.format(0, 0, len(b.lines))
|
||||
return nil
|
||||
}
|
||||
|
||||
var hbar = []byte("---\n")
|
||||
|
||||
// Write writes buf to the writer b.
|
||||
// The only errors returned are ones encountered
|
||||
// while writing to the underlying output stream.
|
||||
//
|
||||
func (b *Writer) Write(buf []byte) (n int, err error) {
|
||||
defer handlePanic(&err, "Write")
|
||||
|
||||
// split text into cells
|
||||
n = 0
|
||||
for i, ch := range buf {
|
||||
if b.endChar == 0 {
|
||||
// outside escape
|
||||
switch ch {
|
||||
case '\t', '\v', '\n', '\f':
|
||||
// end of cell
|
||||
b.append(buf[n:i])
|
||||
b.updateWidth()
|
||||
n = i + 1 // ch consumed
|
||||
ncells := b.terminateCell(ch == '\t')
|
||||
if ch == '\n' || ch == '\f' {
|
||||
// terminate line
|
||||
b.addLine(ch == '\f')
|
||||
if ch == '\f' || ncells == 1 {
|
||||
// A '\f' always forces a flush. Otherwise, if the previous
|
||||
// line has only one cell which does not have an impact on
|
||||
// the formatting of the following lines (the last cell per
|
||||
// line is ignored by format()), thus we can flush the
|
||||
// Writer contents.
|
||||
if err = b.Flush(); err != nil {
|
||||
return
|
||||
}
|
||||
if ch == '\f' && b.flags&Debug != 0 {
|
||||
// indicate section break
|
||||
b.write0(hbar)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
case Escape:
|
||||
// start of escaped sequence
|
||||
b.append(buf[n:i])
|
||||
b.updateWidth()
|
||||
n = i
|
||||
if b.flags&StripEscape != 0 {
|
||||
n++ // strip Escape
|
||||
}
|
||||
b.startEscape(Escape)
|
||||
|
||||
case '<', '&':
|
||||
// possibly an html tag/entity
|
||||
if b.flags&FilterHTML != 0 {
|
||||
// begin of tag/entity
|
||||
b.append(buf[n:i])
|
||||
b.updateWidth()
|
||||
n = i
|
||||
b.startEscape(ch)
|
||||
}
|
||||
}
|
||||
|
||||
} else {
|
||||
// inside escape
|
||||
if ch == b.endChar {
|
||||
// end of tag/entity
|
||||
j := i + 1
|
||||
if ch == Escape && b.flags&StripEscape != 0 {
|
||||
j = i // strip Escape
|
||||
}
|
||||
b.append(buf[n:j])
|
||||
n = i + 1 // ch consumed
|
||||
b.endEscape()
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// append leftover text
|
||||
b.append(buf[n:])
|
||||
n = len(buf)
|
||||
return
|
||||
}
|
||||
|
||||
// NewWriter allocates and initializes a new tabwriter.Writer.
|
||||
// The parameters are the same as for the Init function.
|
||||
//
|
||||
func NewWriter(output io.Writer, minwidth, tabwidth, padding int, padchar byte, flags uint) *Writer {
|
||||
return new(Writer).Init(output, minwidth, tabwidth, padding, padchar, flags)
|
||||
}
|
Loading…
Reference in New Issue
Block a user