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486 lines
13 KiB
486 lines
13 KiB
/*
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* Jake JavaScript build tool
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* Copyright 2112 Matthew Eernisse (mde@fleegix.org)
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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*/
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var fs = require('fs')
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, path = require('path')
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, minimatch = require('minimatch')
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, escapeRegExpChars
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, merge
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, basedir
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, _readDir
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, readdirR
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, globSync;
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/**
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@name escapeRegExpChars
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@function
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@return {String} A string of escaped characters
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@description Escapes regex control-characters in strings
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used to build regexes dynamically
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@param {String} string The string of chars to escape
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*/
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escapeRegExpChars = (function () {
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var specials = [ '^', '$', '/', '.', '*', '+', '?', '|', '(', ')',
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'[', ']', '{', '}', '\\' ];
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var sRE = new RegExp('(\\' + specials.join('|\\') + ')', 'g');
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return function (string) {
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var str = string || '';
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str = String(str);
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return str.replace(sRE, '\\$1');
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};
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})();
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/**
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@name merge
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@function
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@return {Object} Returns the merged object
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@description Merge merges `otherObject` into `object` and takes care of deep
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merging of objects
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@param {Object} object Object to merge into
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@param {Object} otherObject Object to read from
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*/
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merge = function (object, otherObject) {
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var obj = object || {}
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, otherObj = otherObject || {}
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, key, value;
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for (key in otherObj) {
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value = otherObj[key];
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// Check if a value is an Object, if so recursively add it's key/values
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if (typeof value === 'object' && !(value instanceof Array)) {
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// Update value of object to the one from otherObj
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obj[key] = merge(obj[key], value);
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}
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// Value is anything other than an Object, so just add it
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else {
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obj[key] = value;
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}
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}
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return obj;
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};
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/**
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Given a patern, return the base directory of it (ie. the folder
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that will contain all the files matching the path).
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eg. file.basedir('/test/**') => '/test/'
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Path ending by '/' are considerd as folder while other are considerd
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as files, eg.:
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file.basedir('/test/a/') => '/test/a'
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file.basedir('/test/a') => '/test'
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The returned path always end with a '/' so we have:
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file.basedir(file.basedir(x)) == file.basedir(x)
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*/
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basedir = function (pathParam) {
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var bd = ''
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, parts
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, part
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, pos = 0
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, p = pathParam || '';
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// If the path has a leading asterisk, basedir is the current dir
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if (p.indexOf('*') == 0 || p.indexOf('**') == 0) {
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return '.';
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}
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// always consider .. at the end as a folder and not a filename
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if (/(?:^|\/|\\)\.\.$/.test(p.slice(-3))) {
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p += '/';
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}
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parts = p.split(/\\|\//);
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for (var i = 0, l = parts.length - 1; i < l; i++) {
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part = parts[i];
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if (part.indexOf('*') > -1 || part.indexOf('**') > -1) {
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break;
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}
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pos += part.length + 1;
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bd += part + p[pos - 1];
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}
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if (!bd) {
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bd = '.';
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}
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// Strip trailing slashes
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if (!(bd == '\\' || bd == '/')) {
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bd = bd.replace(/\\$|\/$/, '');
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}
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return bd;
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};
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// Return the contents of a given directory
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_readDir = function (dirPath) {
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var dir = path.normalize(dirPath)
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, paths = []
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, ret = [dir]
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, msg;
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try {
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paths = fs.readdirSync(dir);
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}
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catch (e) {
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msg = 'Could not read path ' + dir + '\n';
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if (e.stack) {
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msg += e.stack;
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}
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throw new Error(msg);
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}
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paths.forEach(function (p) {
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var curr = path.join(dir, p);
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var stat = fs.statSync(curr);
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if (stat.isDirectory()) {
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ret = ret.concat(_readDir(curr));
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}
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else {
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ret.push(curr);
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}
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});
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return ret;
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};
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/**
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@name file#readdirR
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@function
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@return {Array} Returns the contents as an Array, can be configured via opts.format
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@description Reads the given directory returning it's contents
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@param {String} dir The directory to read
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@param {Object} opts Options to use
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@param {String} [opts.format] Set the format to return(Default: Array)
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*/
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readdirR = function (dir, opts) {
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var options = opts || {}
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, format = options.format || 'array'
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, ret;
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ret = _readDir(dir);
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return format == 'string' ? ret.join('\n') : ret;
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};
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globSync = function (pat, opts) {
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var dirname = basedir(pat)
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, files
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, matches;
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try {
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files = readdirR(dirname).map(function(file){
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return file.replace(/\\/g, '/');
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});
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}
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// Bail if path doesn't exist -- assume no files
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catch(e) {
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if (FileList.verbose) console.error(e.message);
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}
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if (files) {
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pat = path.normalize(pat);
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matches = minimatch.match(files, pat, opts || {});
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}
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return matches || [];
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};
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// Constants
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// ---------------
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// List of all the builtin Array methods we want to override
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var ARRAY_METHODS = Object.getOwnPropertyNames(Array.prototype)
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// Array methods that return a copy instead of affecting the original
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, SPECIAL_RETURN = {
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'concat': true
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, 'slice': true
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, 'filter': true
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, 'map': true
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}
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// Default file-patterns we want to ignore
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, DEFAULT_IGNORE_PATTERNS = [
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/(^|[\/\\])CVS([\/\\]|$)/
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, /(^|[\/\\])\.svn([\/\\]|$)/
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, /(^|[\/\\])\.git([\/\\]|$)/
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, /\.bak$/
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, /~$/
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]
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// Ignore core files
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, DEFAULT_IGNORE_FUNCS = [
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function (name) {
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var isDir = false
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, stats;
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try {
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stats = fs.statSync(name);
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isDir = stats.isDirectory();
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}
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catch(e) {}
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return (/(^|[\/\\])core$/).test(name) && !isDir;
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}
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];
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var FileList = function () {
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var self = this
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, wrap;
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// List of glob-patterns or specific filenames
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this.pendingAdd = [];
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// Switched to false after lazy-eval of files
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this.pending = true;
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// Used to calculate exclusions from the list of files
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this.excludes = {
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pats: DEFAULT_IGNORE_PATTERNS.slice()
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, funcs: DEFAULT_IGNORE_FUNCS.slice()
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, regex: null
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};
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this.items = [];
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// Wrap the array methods with the delegates
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wrap = function (prop) {
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var arr;
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self[prop] = function () {
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if (self.pending) {
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self.resolve();
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}
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if (typeof self.items[prop] == 'function') {
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// Special method that return a copy
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if (SPECIAL_RETURN[prop]) {
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arr = self.items[prop].apply(self.items, arguments);
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return FileList.clone(self, arr);
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}
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else {
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return self.items[prop].apply(self.items, arguments);
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}
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}
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else {
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return self.items[prop];
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}
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};
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};
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for (var i = 0, ii = ARRAY_METHODS.length; i < ii; i++) {
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wrap(ARRAY_METHODS[i]);
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}
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// Include whatever files got passed to the constructor
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this.include.apply(this, arguments);
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// Fix constructor linkage
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this.constructor = FileList;
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};
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FileList.prototype = new (function () {
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var globPattern = /[*?\[\{]/;
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var _addMatching = function (item) {
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var matches = globSync(item.path, item.options);
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this.items = this.items.concat(matches);
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}
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, _resolveAdd = function (item) {
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if (globPattern.test(item.path)) {
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_addMatching.call(this, item);
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}
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else {
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this.push(item.path);
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}
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}
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, _calculateExcludeRe = function () {
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var pats = this.excludes.pats
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, pat
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, excl = []
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, matches = [];
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for (var i = 0, ii = pats.length; i < ii; i++) {
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pat = pats[i];
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if (typeof pat == 'string') {
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// Glob, look up files
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if (/[*?]/.test(pat)) {
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matches = globSync(pat);
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matches = matches.map(function (m) {
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return escapeRegExpChars(m);
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});
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excl = excl.concat(matches);
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}
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// String for regex
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else {
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excl.push(escapeRegExpChars(pat));
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}
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}
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// Regex, grab the string-representation
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else if (pat instanceof RegExp) {
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excl.push(pat.toString().replace(/^\/|\/$/g, ''));
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}
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}
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if (excl.length) {
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this.excludes.regex = new RegExp('(' + excl.join(')|(') + ')');
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}
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else {
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this.excludes.regex = /^$/;
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}
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}
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, _resolveExclude = function () {
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var self = this;
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_calculateExcludeRe.call(this);
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// No `reject` method, so use reverse-filter
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this.items = this.items.filter(function (name) {
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return !self.shouldExclude(name);
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});
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};
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/**
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* Includes file-patterns in the FileList. Should be called with one or more
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* pattern for finding file to include in the list. Arguments should be strings
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* for either a glob-pattern or a specific file-name, or an array of them
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*/
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this.include = function () {
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var args = Array.prototype.slice.call(arguments)
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, arg
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, includes = { items: [], options: {} };
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for (var i = 0, ilen = args.length; i < ilen; i++) {
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arg = args[i];
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if (typeof arg === 'object' && !Array.isArray(arg)) {
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merge(includes.options, arg);
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} else {
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includes.items = includes.items.concat(arg).filter(function (item) {
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return !!item;
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});
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}
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}
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var items = includes.items.map(function(item) {
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return { path: item, options: includes.options };
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});
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this.pendingAdd = this.pendingAdd.concat(items);
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return this;
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};
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/**
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* Indicates whether a particular file would be filtered out by the current
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* exclusion rules for this FileList.
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* @param {String} name The filename to check
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* @return {Boolean} Whether or not the file should be excluded
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*/
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this.shouldExclude = function (name) {
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if (!this.excludes.regex) {
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_calculateExcludeRe.call(this);
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}
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var excl = this.excludes;
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return excl.regex.test(name) || excl.funcs.some(function (f) {
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return !!f(name);
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});
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};
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/**
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* Excludes file-patterns from the FileList. Should be called with one or more
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* pattern for finding file to include in the list. Arguments can be:
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* 1. Strings for either a glob-pattern or a specific file-name
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* 2. Regular expression literals
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* 3. Functions to be run on the filename that return a true/false
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*/
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this.exclude = function () {
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var args = Array.isArray(arguments[0]) ? arguments[0] : arguments
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, arg;
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for (var i = 0, ii = args.length; i < ii; i++) {
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arg = args[i];
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if (typeof arg == 'function' && !(arg instanceof RegExp)) {
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this.excludes.funcs.push(arg);
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}
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else {
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this.excludes.pats.push(arg);
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}
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}
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if (!this.pending) {
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_resolveExclude.call(this);
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}
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return this;
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};
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/**
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* Populates the FileList from the include/exclude rules with a list of
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* actual files
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*/
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this.resolve = function () {
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var item
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, uniqueFunc = function (p, c) {
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if (p.indexOf(c) < 0) {
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p.push(c);
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}
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return p;
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};
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if (this.pending) {
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this.pending = false;
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while ((item = this.pendingAdd.shift())) {
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_resolveAdd.call(this, item);
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}
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// Reduce to a unique list
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this.items = this.items.reduce(uniqueFunc, []);
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// Remove exclusions
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_resolveExclude.call(this);
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}
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return this;
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};
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/**
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* Convert to a plain-jane array
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*/
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this.toArray = function () {
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// Call slice to ensure lazy-resolution before slicing items
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var ret = this.slice().items.slice();
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return ret;
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};
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/**
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* Clear any pending items -- only useful before
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* calling `resolve`
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*/
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this.clearInclusions = function () {
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this.pendingAdd = [];
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return this;
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};
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/**
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* Clear any current exclusion rules
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*/
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this.clearExclusions = function () {
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this.excludes = {
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pats: []
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, funcs: []
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, regex: null
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};
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return this;
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};
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})();
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// Static method, used to create copy returned by special
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// array methods
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FileList.clone = function (list, items) {
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var clone = new FileList();
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if (items) {
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clone.items = items;
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}
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clone.pendingAdd = list.pendingAdd;
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clone.pending = list.pending;
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for (var p in list.excludes) {
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clone.excludes[p] = list.excludes[p];
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}
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return clone;
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};
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FileList.verbose = true
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exports.FileList = FileList;
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