blob: 3da195c2af66123519745d034387e89550afe902 [file] [log] [blame]
// Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
/// Returns a quoted version of [input] with contents escaped as a Dart literal.
String quoted(String input) {
final sb = StringBuffer();
for (final r in input.runes) {
return '\'${sb.toString()}\'';
/// Escapes [char] such that it will have it's own value in a single
/// quoted dart string.
String _escapeCharacter(int char) {
// Handle characters with a specific escape.
const tab = 9;
const bell = 8;
const newline = 10;
const verticalTab = 11;
const ret = 13;
const dollar = 36;
const singleQuote = 39;
const backslash = 92;
switch (char) {
case backslash:
return r'\\';
case tab:
return r'\t';
case verticalTab:
return r'\v';
case bell:
return r'\b';
case newline:
return r'\n';
case ret:
return r'\r';
case singleQuote:
return r"\'";
case dollar:
return r'\$';
// use \xcc to represent other non-printable characters.
if (char < 32) return '\\x${char.toRadixString(16).padLeft(2, '0')}';
return String.fromCharCode(char);