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