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							331 lines
						
					
					
						
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							331 lines
						
					
					
						
							8.0 KiB
						
					
					
				'use strict'; | 
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 | 
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/** | 
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 * Module dependencies | 
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 */ | 
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 | 
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var extend = require('extend-shallow'); | 
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var unique = require('array-unique'); | 
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var toRegex = require('to-regex'); | 
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 | 
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/** | 
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 * Local dependencies | 
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 */ | 
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 | 
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var compilers = require('./lib/compilers'); | 
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var parsers = require('./lib/parsers'); | 
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var Extglob = require('./lib/extglob'); | 
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var utils = require('./lib/utils'); | 
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var MAX_LENGTH = 1024 * 64; | 
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 | 
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/** | 
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 * Convert the given `extglob` pattern into a regex-compatible string. Returns | 
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 * an object with the compiled result and the parsed AST. | 
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 * | 
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 * ```js | 
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 * var extglob = require('extglob'); | 
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 * console.log(extglob('*.!(*a)')); | 
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 * //=> '(?!\\.)[^/]*?\\.(?!(?!\\.)[^/]*?a\\b).*?' | 
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 * ``` | 
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 * @param {String} `pattern` | 
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 * @param {Object} `options` | 
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 * @return {String} | 
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 * @api public | 
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 */ | 
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 | 
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function extglob(pattern, options) { | 
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  return extglob.create(pattern, options).output; | 
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} | 
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 | 
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/** | 
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 * Takes an array of strings and an extglob pattern and returns a new | 
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 * array that contains only the strings that match the pattern. | 
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 * | 
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 * ```js | 
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 * var extglob = require('extglob'); | 
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 * console.log(extglob.match(['a.a', 'a.b', 'a.c'], '*.!(*a)')); | 
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 * //=> ['a.b', 'a.c'] | 
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 * ``` | 
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 * @param {Array} `list` Array of strings to match | 
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 * @param {String} `pattern` Extglob pattern | 
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 * @param {Object} `options` | 
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 * @return {Array} Returns an array of matches | 
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 * @api public | 
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 */ | 
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extglob.match = function(list, pattern, options) { | 
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  if (typeof pattern !== 'string') { | 
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    throw new TypeError('expected pattern to be a string'); | 
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  } | 
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 | 
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  list = utils.arrayify(list); | 
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  var isMatch = extglob.matcher(pattern, options); | 
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  var len = list.length; | 
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  var idx = -1; | 
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  var matches = []; | 
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 | 
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  while (++idx < len) { | 
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    var ele = list[idx]; | 
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 | 
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    if (isMatch(ele)) { | 
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      matches.push(ele); | 
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    } | 
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  } | 
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 | 
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  // if no options were passed, uniquify results and return | 
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  if (typeof options === 'undefined') { | 
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    return unique(matches); | 
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  } | 
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 | 
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  if (matches.length === 0) { | 
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    if (options.failglob === true) { | 
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      throw new Error('no matches found for "' + pattern + '"'); | 
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    } | 
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    if (options.nonull === true || options.nullglob === true) { | 
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      return [pattern.split('\\').join('')]; | 
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    } | 
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  } | 
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 | 
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  return options.nodupes !== false ? unique(matches) : matches; | 
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}; | 
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 | 
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/** | 
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 * Returns true if the specified `string` matches the given | 
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 * extglob `pattern`. | 
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 * | 
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 * ```js | 
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 * var extglob = require('extglob'); | 
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 * | 
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 * console.log(extglob.isMatch('a.a', '*.!(*a)')); | 
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 * //=> false | 
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 * console.log(extglob.isMatch('a.b', '*.!(*a)')); | 
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 * //=> true | 
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 * ``` | 
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 * @param {String} `string` String to match | 
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 * @param {String} `pattern` Extglob pattern | 
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 * @param {String} `options` | 
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 * @return {Boolean} | 
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 * @api public | 
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 */ | 
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 | 
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extglob.isMatch = function(str, pattern, options) { | 
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  if (typeof pattern !== 'string') { | 
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    throw new TypeError('expected pattern to be a string'); | 
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  } | 
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 | 
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  if (typeof str !== 'string') { | 
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    throw new TypeError('expected a string'); | 
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  } | 
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 | 
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  if (pattern === str) { | 
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    return true; | 
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  } | 
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 | 
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  if (pattern === '' || pattern === ' ' || pattern === '.') { | 
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    return pattern === str; | 
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  } | 
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 | 
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  var isMatch = utils.memoize('isMatch', pattern, options, extglob.matcher); | 
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  return isMatch(str); | 
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}; | 
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/** | 
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 * Returns true if the given `string` contains the given pattern. Similar to `.isMatch` but | 
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 * the pattern can match any part of the string. | 
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 * | 
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 * ```js | 
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 * var extglob = require('extglob'); | 
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 * console.log(extglob.contains('aa/bb/cc', '*b')); | 
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 * //=> true | 
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 * console.log(extglob.contains('aa/bb/cc', '*d')); | 
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 * //=> false | 
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 * ``` | 
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 * @param {String} `str` The string to match. | 
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 * @param {String} `pattern` Glob pattern to use for matching. | 
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 * @param {Object} `options` | 
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 * @return {Boolean} Returns true if the patter matches any part of `str`. | 
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 * @api public | 
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 */ | 
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extglob.contains = function(str, pattern, options) { | 
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  if (typeof str !== 'string') { | 
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    throw new TypeError('expected a string'); | 
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  } | 
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 | 
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  if (pattern === '' || pattern === ' ' || pattern === '.') { | 
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    return pattern === str; | 
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  } | 
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 | 
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  var opts = extend({}, options, {contains: true}); | 
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  opts.strictClose = false; | 
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  opts.strictOpen = false; | 
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  return extglob.isMatch(str, pattern, opts); | 
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}; | 
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 | 
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/** | 
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 * Takes an extglob pattern and returns a matcher function. The returned | 
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 * function takes the string to match as its only argument. | 
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 * | 
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 * ```js | 
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 * var extglob = require('extglob'); | 
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 * var isMatch = extglob.matcher('*.!(*a)'); | 
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 * | 
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 * console.log(isMatch('a.a')); | 
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 * //=> false | 
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 * console.log(isMatch('a.b')); | 
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 * //=> true | 
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 * ``` | 
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 * @param {String} `pattern` Extglob pattern | 
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 * @param {String} `options` | 
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 * @return {Boolean} | 
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 * @api public | 
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 */ | 
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extglob.matcher = function(pattern, options) { | 
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  if (typeof pattern !== 'string') { | 
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    throw new TypeError('expected pattern to be a string'); | 
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  } | 
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 | 
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  function matcher() { | 
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    var re = extglob.makeRe(pattern, options); | 
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    return function(str) { | 
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      return re.test(str); | 
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    }; | 
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  } | 
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 | 
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  return utils.memoize('matcher', pattern, options, matcher); | 
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}; | 
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/** | 
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 * Convert the given `extglob` pattern into a regex-compatible string. Returns | 
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 * an object with the compiled result and the parsed AST. | 
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 * | 
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 * ```js | 
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 * var extglob = require('extglob'); | 
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 * console.log(extglob.create('*.!(*a)').output); | 
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 * //=> '(?!\\.)[^/]*?\\.(?!(?!\\.)[^/]*?a\\b).*?' | 
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 * ``` | 
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 * @param {String} `str` | 
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 * @param {Object} `options` | 
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 * @return {String} | 
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 * @api public | 
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 */ | 
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extglob.create = function(pattern, options) { | 
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  if (typeof pattern !== 'string') { | 
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    throw new TypeError('expected pattern to be a string'); | 
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  } | 
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 | 
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  function create() { | 
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    var ext = new Extglob(options); | 
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    var ast = ext.parse(pattern, options); | 
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    return ext.compile(ast, options); | 
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  } | 
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 | 
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  return utils.memoize('create', pattern, options, create); | 
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}; | 
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/** | 
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 * Returns an array of matches captured by `pattern` in `string`, or `null` | 
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 * if the pattern did not match. | 
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 * | 
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 * ```js | 
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 * var extglob = require('extglob'); | 
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 * extglob.capture(pattern, string[, options]); | 
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 * | 
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 * console.log(extglob.capture('test/*.js', 'test/foo.js')); | 
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 * //=> ['foo'] | 
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 * console.log(extglob.capture('test/*.js', 'foo/bar.css')); | 
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 * //=> null | 
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 * ``` | 
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 * @param {String} `pattern` Glob pattern to use for matching. | 
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 * @param {String} `string` String to match | 
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 * @param {Object} `options` See available [options](#options) for changing how matches are performed | 
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 * @return {Boolean} Returns an array of captures if the string matches the glob pattern, otherwise `null`. | 
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 * @api public | 
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 */ | 
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extglob.capture = function(pattern, str, options) { | 
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  var re = extglob.makeRe(pattern, extend({capture: true}, options)); | 
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 | 
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  function match() { | 
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    return function(string) { | 
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      var match = re.exec(string); | 
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      if (!match) { | 
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        return null; | 
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      } | 
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 | 
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      return match.slice(1); | 
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    }; | 
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  } | 
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 | 
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  var capture = utils.memoize('capture', pattern, options, match); | 
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  return capture(str); | 
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}; | 
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/** | 
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 * Create a regular expression from the given `pattern` and `options`. | 
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 * | 
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 * ```js | 
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 * var extglob = require('extglob'); | 
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 * var re = extglob.makeRe('*.!(*a)'); | 
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 * console.log(re); | 
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 * //=> /^[^\/]*?\.(?![^\/]*?a)[^\/]*?$/ | 
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 * ``` | 
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 * @param {String} `pattern` The pattern to convert to regex. | 
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 * @param {Object} `options` | 
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 * @return {RegExp} | 
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 * @api public | 
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 */ | 
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extglob.makeRe = function(pattern, options) { | 
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  if (pattern instanceof RegExp) { | 
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    return pattern; | 
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  } | 
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 | 
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  if (typeof pattern !== 'string') { | 
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    throw new TypeError('expected pattern to be a string'); | 
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  } | 
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 | 
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  if (pattern.length > MAX_LENGTH) { | 
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    throw new Error('expected pattern to be less than ' + MAX_LENGTH + ' characters'); | 
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  } | 
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 | 
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  function makeRe() { | 
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    var opts = extend({strictErrors: false}, options); | 
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    if (opts.strictErrors === true) opts.strict = true; | 
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    var res = extglob.create(pattern, opts); | 
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    return toRegex(res.output, opts); | 
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  } | 
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 | 
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  var regex = utils.memoize('makeRe', pattern, options, makeRe); | 
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  if (regex.source.length > MAX_LENGTH) { | 
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    throw new SyntaxError('potentially malicious regex detected'); | 
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  } | 
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  return regex; | 
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}; | 
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/** | 
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 * Cache | 
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 */ | 
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extglob.cache = utils.cache; | 
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extglob.clearCache = function() { | 
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  extglob.cache.__data__ = {}; | 
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}; | 
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/** | 
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 * Expose `Extglob` constructor, parsers and compilers | 
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 */ | 
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extglob.Extglob = Extglob; | 
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extglob.compilers = compilers; | 
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extglob.parsers = parsers; | 
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 | 
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/** | 
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 * Expose `extglob` | 
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 * @type {Function} | 
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 */ | 
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module.exports = extglob;
 | 
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 |