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- 'use strict';
-
- // See http://www.robvanderwoude.com/escapechars.php
- const metaCharsRegExp = /([()\][%!^"`<>&|;, *?])/g;
-
- function escapeCommand(arg) {
- // Escape meta chars
- arg = arg.replace(metaCharsRegExp, '^$1');
-
- return arg;
- }
-
- function escapeArgument(arg, doubleEscapeMetaChars) {
- // Convert to string
- arg = `${arg}`;
-
- // Algorithm below is based on https://qntm.org/cmd
-
- // Sequence of backslashes followed by a double quote:
- // double up all the backslashes and escape the double quote
- arg = arg.replace(/(\\*)"/g, '$1$1\\"');
-
- // Sequence of backslashes followed by the end of the string
- // (which will become a double quote later):
- // double up all the backslashes
- arg = arg.replace(/(\\*)$/, '$1$1');
-
- // All other backslashes occur literally
-
- // Quote the whole thing:
- arg = `"${arg}"`;
-
- // Escape meta chars
- arg = arg.replace(metaCharsRegExp, '^$1');
-
- // Double escape meta chars if necessary
- if (doubleEscapeMetaChars) {
- arg = arg.replace(metaCharsRegExp, '^$1');
- }
-
- return arg;
- }
-
- module.exports.command = escapeCommand;
- module.exports.argument = escapeArgument;
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