source: trip-planner-front/node_modules/cross-spawn/lib/util/escape.js@ 76712b2

Last change on this file since 76712b2 was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago

initial commit

  • Property mode set to 100644
File size: 1.1 KB
Line 
1'use strict';
2
3// See http://www.robvanderwoude.com/escapechars.php
4const metaCharsRegExp = /([()\][%!^"`<>&|;, *?])/g;
5
6function escapeCommand(arg) {
7 // Escape meta chars
8 arg = arg.replace(metaCharsRegExp, '^$1');
9
10 return arg;
11}
12
13function escapeArgument(arg, doubleEscapeMetaChars) {
14 // Convert to string
15 arg = `${arg}`;
16
17 // Algorithm below is based on https://qntm.org/cmd
18
19 // Sequence of backslashes followed by a double quote:
20 // double up all the backslashes and escape the double quote
21 arg = arg.replace(/(\\*)"/g, '$1$1\\"');
22
23 // Sequence of backslashes followed by the end of the string
24 // (which will become a double quote later):
25 // double up all the backslashes
26 arg = arg.replace(/(\\*)$/, '$1$1');
27
28 // All other backslashes occur literally
29
30 // Quote the whole thing:
31 arg = `"${arg}"`;
32
33 // Escape meta chars
34 arg = arg.replace(metaCharsRegExp, '^$1');
35
36 // Double escape meta chars if necessary
37 if (doubleEscapeMetaChars) {
38 arg = arg.replace(metaCharsRegExp, '^$1');
39 }
40
41 return arg;
42}
43
44module.exports.command = escapeCommand;
45module.exports.argument = escapeArgument;
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