39 lines
1.2 KiB
JavaScript
39 lines
1.2 KiB
JavaScript
/** Used to escape characters for inclusion in compiled regexes. */
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var regexpEscapes = {
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'0': 'x30', '1': 'x31', '2': 'x32', '3': 'x33', '4': 'x34',
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'5': 'x35', '6': 'x36', '7': 'x37', '8': 'x38', '9': 'x39',
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'A': 'x41', 'B': 'x42', 'C': 'x43', 'D': 'x44', 'E': 'x45', 'F': 'x46',
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'a': 'x61', 'b': 'x62', 'c': 'x63', 'd': 'x64', 'e': 'x65', 'f': 'x66',
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'n': 'x6e', 'r': 'x72', 't': 'x74', 'u': 'x75', 'v': 'x76', 'x': 'x78'
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};
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/** Used to escape characters for inclusion in compiled string literals. */
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var stringEscapes = {
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'\\': '\\',
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"'": "'",
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'\n': 'n',
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'\r': 'r',
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'\u2028': 'u2028',
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'\u2029': 'u2029'
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};
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/**
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* Used by `_.escapeRegExp` to escape characters for inclusion in compiled regexes.
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*
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* @private
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* @param {string} chr The matched character to escape.
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* @param {string} leadingChar The capture group for a leading character.
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* @param {string} whitespaceChar The capture group for a whitespace character.
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* @returns {string} Returns the escaped character.
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*/
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function escapeRegExpChar(chr, leadingChar, whitespaceChar) {
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if (leadingChar) {
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chr = regexpEscapes[chr];
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} else if (whitespaceChar) {
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chr = stringEscapes[chr];
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}
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return '\\' + chr;
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}
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module.exports = escapeRegExpChar;
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