func writeStringValue()

in klog.go [885:932]

• 27 lines of code
• 5 McCabe index (conditional complexity)

func writeStringValue(b *bytes.Buffer, quote bool, v string) {
	data := []byte(v)
	index := bytes.IndexByte(data, '\n')
	if index == -1 {
		b.WriteByte('=')
		if quote {
			// Simple string, quote quotation marks and non-printable characters.
			b.WriteString(strconv.Quote(v))
			return
		}
		// Non-string with no line breaks.
		b.WriteString(v)
		return
	}

	// Complex multi-line string, show as-is with indention like this:
	// I... "hello world" key=<
	// <tab>line 1
	// <tab>line 2
	//  >
	//
	// Tabs indent the lines of the value while the end of string delimiter
	// is indented with a space. That has two purposes:
	// - visual difference between the two for a human reader because indention
	//   will be different
	// - no ambiguity when some value line starts with the end delimiter
	//
	// One downside is that the output cannot distinguish between strings that
	// end with a line break and those that don't because the end delimiter
	// will always be on the next line.
	b.WriteString("=<\n")
	for index != -1 {
		b.WriteByte('\t')
		b.Write(data[0 : index+1])
		data = data[index+1:]
		index = bytes.IndexByte(data, '\n')
	}
	if len(data) == 0 {
		// String ended with line break, don't add another.
		b.WriteString(" >")
	} else {
		// No line break at end of last line, write rest of string and
		// add one.
		b.WriteByte('\t')
		b.Write(data)
		b.WriteString("\n >")
	}
}