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							838 lines
						
					
					
						
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							838 lines
						
					
					
						
							22 KiB
						
					
					
				'use strict'; | 
						|
 | 
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/** | 
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 * Module dependencies | 
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 */ | 
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 | 
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var util = require('util'); | 
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var toRegex = require('to-regex'); | 
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var extend = require('extend-shallow'); | 
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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 cache = require('./lib/cache'); | 
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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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 * The main function takes a list of strings and one or more | 
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 * glob patterns to use for matching. | 
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 * | 
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 * ```js | 
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 * var nm = require('nanomatch'); | 
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 * nm(list, patterns[, options]); | 
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 * | 
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 * console.log(nm(['a.js', 'a.txt'], ['*.js'])); | 
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 * //=> [ 'a.js' ] | 
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 * ``` | 
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 * @param {Array} `list` A list of strings to match | 
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 * @param {String|Array} `patterns` One or more glob patterns to use for matching. | 
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 * @param {Object} `options` See available [options](#options) for changing how matches are performed | 
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 * @return {Array} Returns an array of matches | 
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 * @summary false | 
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 * @api public | 
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 */ | 
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 | 
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function nanomatch(list, patterns, options) { | 
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  patterns = utils.arrayify(patterns); | 
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  list = utils.arrayify(list); | 
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 | 
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  var len = patterns.length; | 
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  if (list.length === 0 || len === 0) { | 
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    return []; | 
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  } | 
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 | 
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  if (len === 1) { | 
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    return nanomatch.match(list, patterns[0], options); | 
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  } | 
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 | 
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  var negated = false; | 
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  var omit = []; | 
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  var keep = []; | 
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  var idx = -1; | 
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 | 
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  while (++idx < len) { | 
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    var pattern = patterns[idx]; | 
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 | 
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    if (typeof pattern === 'string' && pattern.charCodeAt(0) === 33 /* ! */) { | 
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      omit.push.apply(omit, nanomatch.match(list, pattern.slice(1), options)); | 
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      negated = true; | 
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    } else { | 
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      keep.push.apply(keep, nanomatch.match(list, pattern, options)); | 
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    } | 
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  } | 
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 | 
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  // minimatch.match parity | 
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  if (negated && keep.length === 0) { | 
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    if (options && options.unixify === false) { | 
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      keep = list.slice(); | 
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    } else { | 
						|
      var unixify = utils.unixify(options); | 
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      for (var i = 0; i < list.length; i++) { | 
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        keep.push(unixify(list[i])); | 
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      } | 
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    } | 
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  } | 
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 | 
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  var matches = utils.diff(keep, omit); | 
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  if (!options || options.nodupes !== false) { | 
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    return utils.unique(matches); | 
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  } | 
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 | 
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  return matches; | 
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} | 
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 | 
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/** | 
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 * Similar to the main function, but `pattern` must be a string. | 
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 * | 
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 * ```js | 
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 * var nm = require('nanomatch'); | 
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 * nm.match(list, pattern[, options]); | 
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 * | 
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 * console.log(nm.match(['a.a', 'a.aa', 'a.b', 'a.c'], '*.a')); | 
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 * //=> ['a.a', 'a.aa'] | 
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 * ``` | 
						|
 * @param {Array} `list` Array of strings to match | 
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 * @param {String} `pattern` Glob pattern to use for matching. | 
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 * @param {Object} `options` See available [options](#options) for changing how matches are performed | 
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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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 | 
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nanomatch.match = function(list, pattern, options) { | 
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  if (Array.isArray(pattern)) { | 
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    throw new TypeError('expected pattern to be a string'); | 
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  } | 
						|
 | 
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  var unixify = utils.unixify(options); | 
						|
  var isMatch = memoize('match', pattern, options, nanomatch.matcher); | 
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  var matches = []; | 
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 | 
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  list = utils.arrayify(list); | 
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  var len = list.length; | 
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  var idx = -1; | 
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 | 
						|
  while (++idx < len) { | 
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    var ele = list[idx]; | 
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    if (ele === pattern || isMatch(ele)) { | 
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      matches.push(utils.value(ele, unixify, options)); | 
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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 utils.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 [options.unescape ? utils.unescape(pattern) : pattern]; | 
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    } | 
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  } | 
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 | 
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  // if `opts.ignore` was defined, diff ignored list | 
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  if (options.ignore) { | 
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    matches = nanomatch.not(matches, options.ignore, options); | 
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  } | 
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 | 
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  return options.nodupes !== false ? utils.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 glob `pattern`. | 
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 * | 
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 * ```js | 
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 * var nm = require('nanomatch'); | 
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 * nm.isMatch(string, pattern[, options]); | 
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 * | 
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 * console.log(nm.isMatch('a.a', '*.a')); | 
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 * //=> true | 
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 * console.log(nm.isMatch('a.b', '*.a')); | 
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 * //=> false | 
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 * ``` | 
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 * @param {String} `string` String to match | 
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 * @param {String} `pattern` Glob pattern to use for matching. | 
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 * @param {Object} `options` See available [options](#options) for changing how matches are performed | 
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 * @return {Boolean} Returns true if the string matches the glob pattern. | 
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 * @api public | 
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 */ | 
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 | 
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nanomatch.isMatch = function(str, pattern, options) { | 
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  if (typeof str !== 'string') { | 
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    throw new TypeError('expected a string: "' + util.inspect(str) + '"'); | 
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  } | 
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 | 
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  if (utils.isEmptyString(str) || utils.isEmptyString(pattern)) { | 
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    return false; | 
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  } | 
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 | 
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  var equals = utils.equalsPattern(options); | 
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  if (equals(str)) { | 
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    return true; | 
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  } | 
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 | 
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  var isMatch = memoize('isMatch', pattern, options, nanomatch.matcher); | 
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  return isMatch(str); | 
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}; | 
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 | 
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/** | 
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 * Returns true if some of the elements in the given `list` match any of the | 
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 * given glob `patterns`. | 
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 * | 
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 * ```js | 
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 * var nm = require('nanomatch'); | 
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 * nm.some(list, patterns[, options]); | 
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 * | 
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 * console.log(nm.some(['foo.js', 'bar.js'], ['*.js', '!foo.js'])); | 
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 * // true | 
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 * console.log(nm.some(['foo.js'], ['*.js', '!foo.js'])); | 
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 * // false | 
						|
 * ``` | 
						|
 * @param  {String|Array} `list` The string or array of strings to test. Returns as soon as the first match is found. | 
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 * @param {String|Array} `patterns` One or more glob patterns to use for matching. | 
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 * @param {Object} `options` See available [options](#options) for changing how matches are performed | 
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 * @return {Boolean} Returns true if any patterns match `str` | 
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 * @api public | 
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 */ | 
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 | 
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nanomatch.some = function(list, patterns, options) { | 
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  if (typeof list === 'string') { | 
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    list = [list]; | 
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  } | 
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 | 
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  for (var i = 0; i < list.length; i++) { | 
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    if (nanomatch(list[i], patterns, options).length === 1) { | 
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      return true; | 
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    } | 
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  } | 
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 | 
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  return false; | 
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}; | 
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 | 
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/** | 
						|
 * Returns true if every element in the given `list` matches | 
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 * at least one of the given glob `patterns`. | 
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 * | 
						|
 * ```js | 
						|
 * var nm = require('nanomatch'); | 
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 * nm.every(list, patterns[, options]); | 
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 * | 
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 * console.log(nm.every('foo.js', ['foo.js'])); | 
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 * // true | 
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 * console.log(nm.every(['foo.js', 'bar.js'], ['*.js'])); | 
						|
 * // true | 
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 * console.log(nm.every(['foo.js', 'bar.js'], ['*.js', '!foo.js'])); | 
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 * // false | 
						|
 * console.log(nm.every(['foo.js'], ['*.js', '!foo.js'])); | 
						|
 * // false | 
						|
 * ``` | 
						|
 * @param  {String|Array} `list` The string or array of strings to test. | 
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 * @param {String|Array} `patterns` One or more glob patterns to use for matching. | 
						|
 * @param {Object} `options` See available [options](#options) for changing how matches are performed | 
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 * @return {Boolean} Returns true if any patterns match `str` | 
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 * @api public | 
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 */ | 
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 | 
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nanomatch.every = function(list, patterns, options) { | 
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  if (typeof list === 'string') { | 
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    list = [list]; | 
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  } | 
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 | 
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  for (var i = 0; i < list.length; i++) { | 
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    if (nanomatch(list[i], patterns, options).length !== 1) { | 
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      return false; | 
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    } | 
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  } | 
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 | 
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  return true; | 
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}; | 
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 | 
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/** | 
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 * Returns true if **any** of the given glob `patterns` | 
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 * match the specified `string`. | 
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 * | 
						|
 * ```js | 
						|
 * var nm = require('nanomatch'); | 
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 * nm.any(string, patterns[, options]); | 
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 * | 
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 * console.log(nm.any('a.a', ['b.*', '*.a'])); | 
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 * //=> true | 
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 * console.log(nm.any('a.a', 'b.*')); | 
						|
 * //=> false | 
						|
 * ``` | 
						|
 * @param  {String|Array} `str` The string to test. | 
						|
 * @param {String|Array} `patterns` One or more glob patterns to use for matching. | 
						|
 * @param {Object} `options` See available [options](#options) for changing how matches are performed | 
						|
 * @return {Boolean} Returns true if any patterns match `str` | 
						|
 * @api public | 
						|
 */ | 
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 | 
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nanomatch.any = function(str, patterns, options) { | 
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  if (typeof str !== 'string') { | 
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    throw new TypeError('expected a string: "' + util.inspect(str) + '"'); | 
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  } | 
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 | 
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  if (utils.isEmptyString(str) || utils.isEmptyString(patterns)) { | 
						|
    return false; | 
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  } | 
						|
 | 
						|
  if (typeof patterns === 'string') { | 
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    patterns = [patterns]; | 
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  } | 
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 | 
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  for (var i = 0; i < patterns.length; i++) { | 
						|
    if (nanomatch.isMatch(str, patterns[i], options)) { | 
						|
      return true; | 
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    } | 
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  } | 
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  return false; | 
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}; | 
						|
 | 
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/** | 
						|
 * Returns true if **all** of the given `patterns` | 
						|
 * match the specified string. | 
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 * | 
						|
 * ```js | 
						|
 * var nm = require('nanomatch'); | 
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 * nm.all(string, patterns[, options]); | 
						|
 * | 
						|
 * console.log(nm.all('foo.js', ['foo.js'])); | 
						|
 * // true | 
						|
 * | 
						|
 * console.log(nm.all('foo.js', ['*.js', '!foo.js'])); | 
						|
 * // false | 
						|
 * | 
						|
 * console.log(nm.all('foo.js', ['*.js', 'foo.js'])); | 
						|
 * // true | 
						|
 * | 
						|
 * console.log(nm.all('foo.js', ['*.js', 'f*', '*o*', '*o.js'])); | 
						|
 * // true | 
						|
 * ``` | 
						|
 * @param  {String|Array} `str` The string to test. | 
						|
 * @param {String|Array} `patterns` One or more glob patterns to use for matching. | 
						|
 * @param {Object} `options` See available [options](#options) for changing how matches are performed | 
						|
 * @return {Boolean} Returns true if any patterns match `str` | 
						|
 * @api public | 
						|
 */ | 
						|
 | 
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nanomatch.all = function(str, patterns, options) { | 
						|
  if (typeof str !== 'string') { | 
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    throw new TypeError('expected a string: "' + util.inspect(str) + '"'); | 
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  } | 
						|
 | 
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  if (typeof patterns === 'string') { | 
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    patterns = [patterns]; | 
						|
  } | 
						|
 | 
						|
  for (var i = 0; i < patterns.length; i++) { | 
						|
    if (!nanomatch.isMatch(str, patterns[i], options)) { | 
						|
      return false; | 
						|
    } | 
						|
  } | 
						|
  return true; | 
						|
}; | 
						|
 | 
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/** | 
						|
 * Returns a list of strings that _**do not match any**_ of the given `patterns`. | 
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 * | 
						|
 * ```js | 
						|
 * var nm = require('nanomatch'); | 
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 * nm.not(list, patterns[, options]); | 
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 * | 
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 * console.log(nm.not(['a.a', 'b.b', 'c.c'], '*.a')); | 
						|
 * //=> ['b.b', 'c.c'] | 
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 * ``` | 
						|
 * @param {Array} `list` Array of strings to match. | 
						|
 * @param {String|Array} `patterns` One or more glob pattern to use for matching. | 
						|
 * @param {Object} `options` See available [options](#options) for changing how matches are performed | 
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 * @return {Array} Returns an array of strings that **do not match** the given patterns. | 
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 * @api public | 
						|
 */ | 
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 | 
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nanomatch.not = function(list, patterns, options) { | 
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  var opts = extend({}, options); | 
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  var ignore = opts.ignore; | 
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  delete opts.ignore; | 
						|
 | 
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  list = utils.arrayify(list); | 
						|
 | 
						|
  var matches = utils.diff(list, nanomatch(list, patterns, opts)); | 
						|
  if (ignore) { | 
						|
    matches = utils.diff(matches, nanomatch(list, ignore)); | 
						|
  } | 
						|
 | 
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  return opts.nodupes !== false ? utils.unique(matches) : matches; | 
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}; | 
						|
 | 
						|
/** | 
						|
 * Returns true if the given `string` contains the given pattern. Similar | 
						|
 * to [.isMatch](#isMatch) but the pattern can match any part of the string. | 
						|
 * | 
						|
 * ```js | 
						|
 * var nm = require('nanomatch'); | 
						|
 * nm.contains(string, pattern[, options]); | 
						|
 * | 
						|
 * console.log(nm.contains('aa/bb/cc', '*b')); | 
						|
 * //=> true | 
						|
 * console.log(nm.contains('aa/bb/cc', '*d')); | 
						|
 * //=> false | 
						|
 * ``` | 
						|
 * @param {String} `str` The string to match. | 
						|
 * @param {String|Array} `patterns` Glob pattern to use for matching. | 
						|
 * @param {Object} `options` See available [options](#options) for changing how matches are performed | 
						|
 * @return {Boolean} Returns true if the patter matches any part of `str`. | 
						|
 * @api public | 
						|
 */ | 
						|
 | 
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nanomatch.contains = function(str, patterns, options) { | 
						|
  if (typeof str !== 'string') { | 
						|
    throw new TypeError('expected a string: "' + util.inspect(str) + '"'); | 
						|
  } | 
						|
 | 
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  if (typeof patterns === 'string') { | 
						|
    if (utils.isEmptyString(str) || utils.isEmptyString(patterns)) { | 
						|
      return false; | 
						|
    } | 
						|
 | 
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    var equals = utils.equalsPattern(patterns, options); | 
						|
    if (equals(str)) { | 
						|
      return true; | 
						|
    } | 
						|
    var contains = utils.containsPattern(patterns, options); | 
						|
    if (contains(str)) { | 
						|
      return true; | 
						|
    } | 
						|
  } | 
						|
 | 
						|
  var opts = extend({}, options, {contains: true}); | 
						|
  return nanomatch.any(str, patterns, opts); | 
						|
}; | 
						|
 | 
						|
/** | 
						|
 * Returns true if the given pattern and options should enable | 
						|
 * the `matchBase` option. | 
						|
 * @return {Boolean} | 
						|
 * @api private | 
						|
 */ | 
						|
 | 
						|
nanomatch.matchBase = function(pattern, options) { | 
						|
  if (pattern && pattern.indexOf('/') !== -1 || !options) return false; | 
						|
  return options.basename === true || options.matchBase === true; | 
						|
}; | 
						|
 | 
						|
/** | 
						|
 * Filter the keys of the given object with the given `glob` pattern | 
						|
 * and `options`. Does not attempt to match nested keys. If you need this feature, | 
						|
 * use [glob-object][] instead. | 
						|
 * | 
						|
 * ```js | 
						|
 * var nm = require('nanomatch'); | 
						|
 * nm.matchKeys(object, patterns[, options]); | 
						|
 * | 
						|
 * var obj = { aa: 'a', ab: 'b', ac: 'c' }; | 
						|
 * console.log(nm.matchKeys(obj, '*b')); | 
						|
 * //=> { ab: 'b' } | 
						|
 * ``` | 
						|
 * @param {Object} `object` The object with keys to filter. | 
						|
 * @param {String|Array} `patterns` One or more glob patterns to use for matching. | 
						|
 * @param {Object} `options` See available [options](#options) for changing how matches are performed | 
						|
 * @return {Object} Returns an object with only keys that match the given patterns. | 
						|
 * @api public | 
						|
 */ | 
						|
 | 
						|
nanomatch.matchKeys = function(obj, patterns, options) { | 
						|
  if (!utils.isObject(obj)) { | 
						|
    throw new TypeError('expected the first argument to be an object'); | 
						|
  } | 
						|
  var keys = nanomatch(Object.keys(obj), patterns, options); | 
						|
  return utils.pick(obj, keys); | 
						|
}; | 
						|
 | 
						|
/** | 
						|
 * Returns a memoized matcher function from the given glob `pattern` and `options`. | 
						|
 * The returned function takes a string to match as its only argument and returns | 
						|
 * true if the string is a match. | 
						|
 * | 
						|
 * ```js | 
						|
 * var nm = require('nanomatch'); | 
						|
 * nm.matcher(pattern[, options]); | 
						|
 * | 
						|
 * var isMatch = nm.matcher('*.!(*a)'); | 
						|
 * console.log(isMatch('a.a')); | 
						|
 * //=> false | 
						|
 * console.log(isMatch('a.b')); | 
						|
 * //=> true | 
						|
 * ``` | 
						|
 * @param {String} `pattern` Glob pattern | 
						|
 * @param {Object} `options` See available [options](#options) for changing how matches are performed. | 
						|
 * @return {Function} Returns a matcher function. | 
						|
 * @api public | 
						|
 */ | 
						|
 | 
						|
nanomatch.matcher = function matcher(pattern, options) { | 
						|
  if (utils.isEmptyString(pattern)) { | 
						|
    return function() { | 
						|
      return false; | 
						|
    }; | 
						|
  } | 
						|
 | 
						|
  if (Array.isArray(pattern)) { | 
						|
    return compose(pattern, options, matcher); | 
						|
  } | 
						|
 | 
						|
  // if pattern is a regex | 
						|
  if (pattern instanceof RegExp) { | 
						|
    return test(pattern); | 
						|
  } | 
						|
 | 
						|
  // if pattern is invalid | 
						|
  if (!utils.isString(pattern)) { | 
						|
    throw new TypeError('expected pattern to be an array, string or regex'); | 
						|
  } | 
						|
 | 
						|
  // if pattern is a non-glob string | 
						|
  if (!utils.hasSpecialChars(pattern)) { | 
						|
    if (options && options.nocase === true) { | 
						|
      pattern = pattern.toLowerCase(); | 
						|
    } | 
						|
    return utils.matchPath(pattern, options); | 
						|
  } | 
						|
 | 
						|
  // if pattern is a glob string | 
						|
  var re = nanomatch.makeRe(pattern, options); | 
						|
 | 
						|
  // if `options.matchBase` or `options.basename` is defined | 
						|
  if (nanomatch.matchBase(pattern, options)) { | 
						|
    return utils.matchBasename(re, options); | 
						|
  } | 
						|
 | 
						|
  function test(regex) { | 
						|
    var equals = utils.equalsPattern(options); | 
						|
    var unixify = utils.unixify(options); | 
						|
 | 
						|
    return function(str) { | 
						|
      if (equals(str)) { | 
						|
        return true; | 
						|
      } | 
						|
 | 
						|
      if (regex.test(unixify(str))) { | 
						|
        return true; | 
						|
      } | 
						|
      return false; | 
						|
    }; | 
						|
  } | 
						|
 | 
						|
  // create matcher function | 
						|
  var matcherFn = test(re); | 
						|
  // set result object from compiler on matcher function, | 
						|
  // as a non-enumerable property. useful for debugging | 
						|
  utils.define(matcherFn, 'result', re.result); | 
						|
  return matcherFn; | 
						|
}; | 
						|
 | 
						|
/** | 
						|
 * Returns an array of matches captured by `pattern` in `string, or | 
						|
 * `null` if the pattern did not match. | 
						|
 * | 
						|
 * ```js | 
						|
 * var nm = require('nanomatch'); | 
						|
 * nm.capture(pattern, string[, options]); | 
						|
 * | 
						|
 * console.log(nm.capture('test/*.js', 'test/foo.js')); | 
						|
 * //=> ['foo'] | 
						|
 * console.log(nm.capture('test/*.js', 'foo/bar.css')); | 
						|
 * //=> null | 
						|
 * ``` | 
						|
 * @param {String} `pattern` Glob pattern to use for matching. | 
						|
 * @param {String} `string` String to match | 
						|
 * @param {Object} `options` See available [options](#options) for changing how matches are performed | 
						|
 * @return {Boolean} Returns an array of captures if the string matches the glob pattern, otherwise `null`. | 
						|
 * @api public | 
						|
 */ | 
						|
 | 
						|
nanomatch.capture = function(pattern, str, options) { | 
						|
  var re = nanomatch.makeRe(pattern, extend({capture: true}, options)); | 
						|
  var unixify = utils.unixify(options); | 
						|
 | 
						|
  function match() { | 
						|
    return function(string) { | 
						|
      var match = re.exec(unixify(string)); | 
						|
      if (!match) { | 
						|
        return null; | 
						|
      } | 
						|
 | 
						|
      return match.slice(1); | 
						|
    }; | 
						|
  } | 
						|
 | 
						|
  var capture = memoize('capture', pattern, options, match); | 
						|
  return capture(str); | 
						|
}; | 
						|
 | 
						|
/** | 
						|
 * Create a regular expression from the given glob `pattern`. | 
						|
 * | 
						|
 * ```js | 
						|
 * var nm = require('nanomatch'); | 
						|
 * nm.makeRe(pattern[, options]); | 
						|
 * | 
						|
 * console.log(nm.makeRe('*.js')); | 
						|
 * //=> /^(?:(\.[\\\/])?(?!\.)(?=.)[^\/]*?\.js)$/ | 
						|
 * ``` | 
						|
 * @param {String} `pattern` A glob pattern to convert to regex. | 
						|
 * @param {Object} `options` See available [options](#options) for changing how matches are performed. | 
						|
 * @return {RegExp} Returns a regex created from the given pattern. | 
						|
 * @api public | 
						|
 */ | 
						|
 | 
						|
nanomatch.makeRe = function(pattern, options) { | 
						|
  if (pattern instanceof RegExp) { | 
						|
    return pattern; | 
						|
  } | 
						|
 | 
						|
  if (typeof pattern !== 'string') { | 
						|
    throw new TypeError('expected pattern to be a string'); | 
						|
  } | 
						|
 | 
						|
  if (pattern.length > MAX_LENGTH) { | 
						|
    throw new Error('expected pattern to be less than ' + MAX_LENGTH + ' characters'); | 
						|
  } | 
						|
 | 
						|
  function makeRe() { | 
						|
    var opts = utils.extend({wrap: false}, options); | 
						|
    var result = nanomatch.create(pattern, opts); | 
						|
    var regex = toRegex(result.output, opts); | 
						|
    utils.define(regex, 'result', result); | 
						|
    return regex; | 
						|
  } | 
						|
 | 
						|
  return memoize('makeRe', pattern, options, makeRe); | 
						|
}; | 
						|
 | 
						|
/** | 
						|
 * Parses the given glob `pattern` and returns an object with the compiled `output` | 
						|
 * and optional source `map`. | 
						|
 * | 
						|
 * ```js | 
						|
 * var nm = require('nanomatch'); | 
						|
 * nm.create(pattern[, options]); | 
						|
 * | 
						|
 * console.log(nm.create('abc/*.js')); | 
						|
 * // { options: { source: 'string', sourcemap: true }, | 
						|
 * //   state: {}, | 
						|
 * //   compilers: | 
						|
 * //    { ... }, | 
						|
 * //   output: '(\\.[\\\\\\/])?abc\\/(?!\\.)(?=.)[^\\/]*?\\.js', | 
						|
 * //   ast: | 
						|
 * //    { type: 'root', | 
						|
 * //      errors: [], | 
						|
 * //      nodes: | 
						|
 * //       [ ... ], | 
						|
 * //      dot: false, | 
						|
 * //      input: 'abc/*.js' }, | 
						|
 * //   parsingErrors: [], | 
						|
 * //   map: | 
						|
 * //    { version: 3, | 
						|
 * //      sources: [ 'string' ], | 
						|
 * //      names: [], | 
						|
 * //      mappings: 'AAAA,GAAG,EAAC,kBAAC,EAAC,EAAE', | 
						|
 * //      sourcesContent: [ 'abc/*.js' ] }, | 
						|
 * //   position: { line: 1, column: 28 }, | 
						|
 * //   content: {}, | 
						|
 * //   files: {}, | 
						|
 * //   idx: 6 } | 
						|
 * ``` | 
						|
 * @param {String} `pattern` Glob pattern to parse and compile. | 
						|
 * @param {Object} `options` Any [options](#options) to change how parsing and compiling is performed. | 
						|
 * @return {Object} Returns an object with the parsed AST, compiled string and optional source map. | 
						|
 * @api public | 
						|
 */ | 
						|
 | 
						|
nanomatch.create = function(pattern, options) { | 
						|
  if (typeof pattern !== 'string') { | 
						|
    throw new TypeError('expected a string'); | 
						|
  } | 
						|
  function create() { | 
						|
    return nanomatch.compile(nanomatch.parse(pattern, options), options); | 
						|
  } | 
						|
  return memoize('create', pattern, options, create); | 
						|
}; | 
						|
 | 
						|
/** | 
						|
 * Parse the given `str` with the given `options`. | 
						|
 * | 
						|
 * ```js | 
						|
 * var nm = require('nanomatch'); | 
						|
 * nm.parse(pattern[, options]); | 
						|
 * | 
						|
 * var ast = nm.parse('a/{b,c}/d'); | 
						|
 * console.log(ast); | 
						|
 * // { type: 'root', | 
						|
 * //   errors: [], | 
						|
 * //   input: 'a/{b,c}/d', | 
						|
 * //   nodes: | 
						|
 * //    [ { type: 'bos', val: '' }, | 
						|
 * //      { type: 'text', val: 'a/' }, | 
						|
 * //      { type: 'brace', | 
						|
 * //        nodes: | 
						|
 * //         [ { type: 'brace.open', val: '{' }, | 
						|
 * //           { type: 'text', val: 'b,c' }, | 
						|
 * //           { type: 'brace.close', val: '}' } ] }, | 
						|
 * //      { type: 'text', val: '/d' }, | 
						|
 * //      { type: 'eos', val: '' } ] } | 
						|
 * ``` | 
						|
 * @param {String} `str` | 
						|
 * @param {Object} `options` | 
						|
 * @return {Object} Returns an AST | 
						|
 * @api public | 
						|
 */ | 
						|
 | 
						|
nanomatch.parse = function(pattern, options) { | 
						|
  if (typeof pattern !== 'string') { | 
						|
    throw new TypeError('expected a string'); | 
						|
  } | 
						|
 | 
						|
  function parse() { | 
						|
    var snapdragon = utils.instantiate(null, options); | 
						|
    parsers(snapdragon, options); | 
						|
 | 
						|
    var ast = snapdragon.parse(pattern, options); | 
						|
    utils.define(ast, 'snapdragon', snapdragon); | 
						|
    ast.input = pattern; | 
						|
    return ast; | 
						|
  } | 
						|
 | 
						|
  return memoize('parse', pattern, options, parse); | 
						|
}; | 
						|
 | 
						|
/** | 
						|
 * Compile the given `ast` or string with the given `options`. | 
						|
 * | 
						|
 * ```js | 
						|
 * var nm = require('nanomatch'); | 
						|
 * nm.compile(ast[, options]); | 
						|
 * | 
						|
 * var ast = nm.parse('a/{b,c}/d'); | 
						|
 * console.log(nm.compile(ast)); | 
						|
 * // { options: { source: 'string' }, | 
						|
 * //   state: {}, | 
						|
 * //   compilers: | 
						|
 * //    { eos: [Function], | 
						|
 * //      noop: [Function], | 
						|
 * //      bos: [Function], | 
						|
 * //      brace: [Function], | 
						|
 * //      'brace.open': [Function], | 
						|
 * //      text: [Function], | 
						|
 * //      'brace.close': [Function] }, | 
						|
 * //   output: [ 'a/(b|c)/d' ], | 
						|
 * //   ast: | 
						|
 * //    { ... }, | 
						|
 * //   parsingErrors: [] } | 
						|
 * ``` | 
						|
 * @param {Object|String} `ast` | 
						|
 * @param {Object} `options` | 
						|
 * @return {Object} Returns an object that has an `output` property with the compiled string. | 
						|
 * @api public | 
						|
 */ | 
						|
 | 
						|
nanomatch.compile = function(ast, options) { | 
						|
  if (typeof ast === 'string') { | 
						|
    ast = nanomatch.parse(ast, options); | 
						|
  } | 
						|
 | 
						|
  function compile() { | 
						|
    var snapdragon = utils.instantiate(ast, options); | 
						|
    compilers(snapdragon, options); | 
						|
    return snapdragon.compile(ast, options); | 
						|
  } | 
						|
 | 
						|
  return memoize('compile', ast.input, options, compile); | 
						|
}; | 
						|
 | 
						|
/** | 
						|
 * Clear the regex cache. | 
						|
 * | 
						|
 * ```js | 
						|
 * nm.clearCache(); | 
						|
 * ``` | 
						|
 * @api public | 
						|
 */ | 
						|
 | 
						|
nanomatch.clearCache = function() { | 
						|
  nanomatch.cache.__data__ = {}; | 
						|
}; | 
						|
 | 
						|
/** | 
						|
 * Compose a matcher function with the given patterns. | 
						|
 * This allows matcher functions to be compiled once and | 
						|
 * called multiple times. | 
						|
 */ | 
						|
 | 
						|
function compose(patterns, options, matcher) { | 
						|
  var matchers; | 
						|
 | 
						|
  return memoize('compose', String(patterns), options, function() { | 
						|
    return function(file) { | 
						|
      // delay composition until it's invoked the first time, | 
						|
      // after that it won't be called again | 
						|
      if (!matchers) { | 
						|
        matchers = []; | 
						|
        for (var i = 0; i < patterns.length; i++) { | 
						|
          matchers.push(matcher(patterns[i], options)); | 
						|
        } | 
						|
      } | 
						|
 | 
						|
      var len = matchers.length; | 
						|
      while (len--) { | 
						|
        if (matchers[len](file) === true) { | 
						|
          return true; | 
						|
        } | 
						|
      } | 
						|
      return false; | 
						|
    }; | 
						|
  }); | 
						|
} | 
						|
 | 
						|
/** | 
						|
 * Memoize a generated regex or function. A unique key is generated | 
						|
 * from the `type` (usually method name), the `pattern`, and | 
						|
 * user-defined options. | 
						|
 */ | 
						|
 | 
						|
function memoize(type, pattern, options, fn) { | 
						|
  var key = utils.createKey(type + '=' + pattern, options); | 
						|
 | 
						|
  if (options && options.cache === false) { | 
						|
    return fn(pattern, options); | 
						|
  } | 
						|
 | 
						|
  if (cache.has(type, key)) { | 
						|
    return cache.get(type, key); | 
						|
  } | 
						|
 | 
						|
  var val = fn(pattern, options); | 
						|
  cache.set(type, key, val); | 
						|
  return val; | 
						|
} | 
						|
 | 
						|
/** | 
						|
 * Expose compiler, parser and cache on `nanomatch` | 
						|
 */ | 
						|
 | 
						|
nanomatch.compilers = compilers; | 
						|
nanomatch.parsers = parsers; | 
						|
nanomatch.cache = cache; | 
						|
 | 
						|
/** | 
						|
 * Expose `nanomatch` | 
						|
 * @type {Function} | 
						|
 */ | 
						|
 | 
						|
module.exports = nanomatch;
 | 
						|
 |