Function AppendJSONString

jsonstring.go:24–45

AppendJSONString appends json-encoded string s to dst and returns the result. If addQuotes is true, then the appended json string is wrapped into double quotes.

(dst []byte, s string, addQuotes bool)

//
// If addQuotes is true, then the appended json string is wrapped into double quotes.
func AppendJSONString(dst []byte, s string, addQuotes bool) []byte {
	if !hasSpecialChars(s) {
		// Fast path - nothing to escape.
		if !addQuotes {
			return append(dst, s...)
		}
		dst = append(dst, '"')
		dst = append(dst, s...)
		dst = append(dst, '"')
		return dst
	}

	// Slow path - there are chars to escape.
	if addQuotes {
		dst = append(dst, '"')
	}
	dst = jsonReplacer.AppendReplace(dst, s)
	if addQuotes {
		dst = append(dst, '"')
	}
	return dst
}

var jsonReplacer = newByteReplacer(func() ([]byte, []string) {
	oldChars := []byte("\n\r\t\b\f\"\\<'")