Function parsePrintedStack

withstack/reportable.go:128–167

parsePrintedStack reverse-engineers a reportable stack trace from the result of printing a github.com/pkg/errors stack trace with format %+v.

(st string)

// parsePrintedStack reverse-engineers a reportable stack trace from
// the result of printing a github.com/pkg/errors stack trace with format %+v.
func parsePrintedStack(st string) *ReportableStackTrace {
	// A printed stack trace looks like a repetition of either:
	// "unknown"
	// or
	// <result of fn.Name()>
	// <tab><file>:<linenum>
	// It's also likely to contain a heading newline character(s).
	var frames []frame
	lines := strings.Split(strings.TrimSpace(st), "\n")
	for i := 0; i < len(lines); i++ {
		nextI, file, line, fnName := parsePrintedStackEntry(lines, i)
		i = nextI

		// Compose the frame.
		frame := frame{
			AbsPath:  file,
			Filename: trimPath(file),
			Lineno:   line,
			InApp:    true,
			Module:   "unknown",
			Function: fnName,
		}
		if fnName != "unknown" {
			// Extract the function/module details.
			frame.Module, frame.Function = functionName(fnName)
		}
		frames = append(frames, frame)
	}

	if frames == nil {
		return nil
	}

	// Sentry wants the frames with the oldest first, so reverse them.
	for i, j := 0, len(frames)-1; i < j; i, j = i+1, j-1 {
		frames[i], frames[j] = frames[j], frames[i]
	}

	return &ReportableStackTrace{Frames: frames}
}

// parsePrintedStackEntry extracts the stack entry information
// in lines at position i. It returns the new value of i if more than