forked from github/multus-cni
Update libcni to 0.7.0 (Spec ver 0.4.0)
This commit is contained in:
Tomofumi Hayashi
committed by
Tomofumi Hayashi
Tomofumi Hayashi
parent
6c23cad08d
commit
e723aabca8
99
vendor/github.com/pkg/errors/stack.go
generated
vendored
99
vendor/github.com/pkg/errors/stack.go
generated
vendored
@@ -5,13 +5,10 @@ import (
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"io"
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"path"
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"runtime"
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"strconv"
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"strings"
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)
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// Frame represents a program counter inside a stack frame.
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// For historical reasons if Frame is interpreted as a uintptr
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// its value represents the program counter + 1.
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type Frame uintptr
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// pc returns the program counter for this frame;
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@@ -40,15 +37,6 @@ func (f Frame) line() int {
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return line
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}
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// name returns the name of this function, if known.
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func (f Frame) name() string {
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fn := runtime.FuncForPC(f.pc())
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if fn == nil {
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return "unknown"
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}
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return fn.Name()
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}
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// Format formats the frame according to the fmt.Formatter interface.
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//
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// %s source file
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@@ -58,24 +46,29 @@ func (f Frame) name() string {
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//
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// Format accepts flags that alter the printing of some verbs, as follows:
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//
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// %+s function name and path of source file relative to the compile time
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// GOPATH separated by \n\t (<funcname>\n\t<path>)
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// %+s path of source file relative to the compile time GOPATH
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// %+v equivalent to %+s:%d
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func (f Frame) Format(s fmt.State, verb rune) {
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switch verb {
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case 's':
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switch {
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case s.Flag('+'):
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io.WriteString(s, f.name())
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io.WriteString(s, "\n\t")
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io.WriteString(s, f.file())
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pc := f.pc()
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fn := runtime.FuncForPC(pc)
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if fn == nil {
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io.WriteString(s, "unknown")
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} else {
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file, _ := fn.FileLine(pc)
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fmt.Fprintf(s, "%s\n\t%s", fn.Name(), file)
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}
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default:
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io.WriteString(s, path.Base(f.file()))
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}
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case 'd':
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io.WriteString(s, strconv.Itoa(f.line()))
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fmt.Fprintf(s, "%d", f.line())
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case 'n':
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io.WriteString(s, funcname(f.name()))
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name := runtime.FuncForPC(f.pc()).Name()
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io.WriteString(s, funcname(name))
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case 'v':
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f.Format(s, 's')
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io.WriteString(s, ":")
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@@ -86,46 +79,24 @@ func (f Frame) Format(s fmt.State, verb rune) {
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// StackTrace is stack of Frames from innermost (newest) to outermost (oldest).
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type StackTrace []Frame
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// Format formats the stack of Frames according to the fmt.Formatter interface.
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//
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// %s lists source files for each Frame in the stack
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// %v lists the source file and line number for each Frame in the stack
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//
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// Format accepts flags that alter the printing of some verbs, as follows:
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//
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// %+v Prints filename, function, and line number for each Frame in the stack.
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func (st StackTrace) Format(s fmt.State, verb rune) {
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switch verb {
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case 'v':
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switch {
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case s.Flag('+'):
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for _, f := range st {
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io.WriteString(s, "\n")
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f.Format(s, verb)
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fmt.Fprintf(s, "\n%+v", f)
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}
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case s.Flag('#'):
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fmt.Fprintf(s, "%#v", []Frame(st))
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default:
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st.formatSlice(s, verb)
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fmt.Fprintf(s, "%v", []Frame(st))
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}
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case 's':
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st.formatSlice(s, verb)
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fmt.Fprintf(s, "%s", []Frame(st))
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}
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}
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// formatSlice will format this StackTrace into the given buffer as a slice of
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// Frame, only valid when called with '%s' or '%v'.
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func (st StackTrace) formatSlice(s fmt.State, verb rune) {
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io.WriteString(s, "[")
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for i, f := range st {
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if i > 0 {
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io.WriteString(s, " ")
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}
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f.Format(s, verb)
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}
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io.WriteString(s, "]")
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}
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// stack represents a stack of program counters.
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type stack []uintptr
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@@ -165,3 +136,43 @@ func funcname(name string) string {
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i = strings.Index(name, ".")
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return name[i+1:]
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}
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func trimGOPATH(name, file string) string {
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// Here we want to get the source file path relative to the compile time
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// GOPATH. As of Go 1.6.x there is no direct way to know the compiled
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// GOPATH at runtime, but we can infer the number of path segments in the
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// GOPATH. We note that fn.Name() returns the function name qualified by
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// the import path, which does not include the GOPATH. Thus we can trim
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// segments from the beginning of the file path until the number of path
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// separators remaining is one more than the number of path separators in
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// the function name. For example, given:
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//
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// GOPATH /home/user
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// file /home/user/src/pkg/sub/file.go
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// fn.Name() pkg/sub.Type.Method
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//
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// We want to produce:
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//
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// pkg/sub/file.go
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//
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// From this we can easily see that fn.Name() has one less path separator
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// than our desired output. We count separators from the end of the file
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// path until it finds two more than in the function name and then move
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// one character forward to preserve the initial path segment without a
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// leading separator.
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const sep = "/"
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goal := strings.Count(name, sep) + 2
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i := len(file)
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for n := 0; n < goal; n++ {
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i = strings.LastIndex(file[:i], sep)
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if i == -1 {
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// not enough separators found, set i so that the slice expression
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// below leaves file unmodified
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i = -len(sep)
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break
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}
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}
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// get back to 0 or trim the leading separator
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file = file[i+len(sep):]
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return file
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}
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