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globule.js
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			/*
			* globule
			* https://github.com/cowboy/node-globule
			*
			* Copyright (c) 2013 "Cowboy" Ben Alman
			* Licensed under the MIT license.
			*/

			'use strict';

			var fs = require('fs');
			var path = require('path');

			var _ = require('lodash');
			var glob = require('glob');
			var minimatch = require('minimatch');

			// The module.
			var globule = exports;

			// Process specified wildcard glob patterns or filenames against a
			// callback, excluding and uniquing files in the result set.
			function processPatterns(patterns, fn) {
			return _.flatten(patterns).reduce(function(result, pattern) {
			if (pattern.indexOf('!') === 0) {
			// If the first character is ! all matches via this pattern should be
			// removed from the result set.
			pattern = pattern.slice(1);
			return _.difference(result, fn(pattern));
			} else {
			// Otherwise, add all matching filepaths to the result set.
			return _.union(result, fn(pattern));
			}
			}, []);
			}

			// Match a filepath or filepaths against one or more wildcard patterns. Returns
			// all matching filepaths. This behaves just like minimatch.match, but supports
			// any number of patterns.
			globule.match = function(patterns, filepaths, options) {
			// Return empty set if either patterns or filepaths was omitted.
			if (patterns == null \|\| filepaths == null) { return []; }
			// Normalize patterns and filepaths to arrays.
			if (!_.isArray(patterns)) { patterns = [patterns]; }
			if (!_.isArray(filepaths)) { filepaths = [filepaths]; }
			// Return empty set if there are no patterns or filepaths.
			if (patterns.length === 0 \|\| filepaths.length === 0) { return []; }
			// Return all matching filepaths.
			return processPatterns(patterns, function(pattern) {
			return minimatch.match(filepaths, pattern, options \|\| {});
			});
			};

			// Match a filepath or filepaths against one or more wildcard patterns. Returns
			// true if any of the patterns match.
			globule.isMatch = function() {
			return globule.match.apply(null, arguments).length > 0;
			};

			// Return an array of all file paths that match the given wildcard patterns.
			globule.find = function() {
			var args = _.toArray(arguments);
			// If the last argument is an options object, remove it from args.
			var options = _.isPlainObject(args[args.length - 1]) ? args.pop() : {};
			// Use the first argument if it's an Array, otherwise use all arguments.
			var patterns = _.isArray(args[0]) ? args[0] : args;
			// Return empty set if there are no patterns or filepaths.
			if (patterns.length === 0) { return []; }
			var srcBase = options.srcBase \|\| options.cwd;
			// Create glob-specific options object.
			var globOptions = _.extend({}, options);
			if (srcBase) {
			globOptions.cwd = srcBase;
			}
			// Get all matching filepaths.
			var matches = processPatterns(patterns, function(pattern) {
			return glob.sync(pattern, globOptions);
			});
			// If srcBase and prefixBase were specified, prefix srcBase to matched paths.
			if (srcBase && options.prefixBase) {
			matches = matches.map(function(filepath) {
			return path.join(srcBase, filepath);
			});
			}
			// Filter result set?
			if (options.filter) {
			matches = matches.filter(function(filepath) {
			// If srcBase was specified but prefixBase was NOT, prefix srcBase
			// temporarily, for filtering.
			if (srcBase && !options.prefixBase) {
			filepath = path.join(srcBase, filepath);
			}
			try {
			if (_.isFunction(options.filter)) {
			return options.filter(filepath, options);
			} else {
			// If the file is of the right type and exists, this should work.
			return fs.statSync(filepath)[options.filter]();
			}
			} catch(err) {
			// Otherwise, it's probably not the right type.
			return false;
			}
			});
			}
			return matches;
			};

			var pathSeparatorRe = /[\/\\]/g;
			var extDotRe = {
			first: /(\.[^\/]*)?$/,
			last: /(\.[^\/\.]*)?$/,
			};
			function rename(dest, options) {
			// Flatten path?
			if (options.flatten) {
			dest = path.basename(dest);
			}
			// Change the extension?
			if (options.ext) {
			dest = dest.replace(extDotRe[options.extDot], options.ext);
			}
			// Join dest and destBase?
			if (options.destBase) {
			dest = path.join(options.destBase, dest);
			}
			return dest;
			}

			// Build a mapping of src-dest filepaths from the given set of filepaths.
			globule.mapping = function(filepaths, options) {
			// Return empty set if filepaths was omitted.
			if (filepaths == null) { return []; }
			options = _.defaults({}, options, {
			extDot: 'first',
			rename: rename,
			});
			var files = [];
			var fileByDest = {};
			// Find all files matching pattern, using passed-in options.
			filepaths.forEach(function(src) {
			// Generate destination filename.
			var dest = options.rename(src, options);
			// Prepend srcBase to all src paths.
			if (options.srcBase) {
			src = path.join(options.srcBase, src);
			}
			// Normalize filepaths to be unix-style.
			dest = dest.replace(pathSeparatorRe, '/');
			src = src.replace(pathSeparatorRe, '/');
			// Map correct src path to dest path.
			if (fileByDest[dest]) {
			// If dest already exists, push this src onto that dest's src array.
			fileByDest[dest].src.push(src);
			} else {
			// Otherwise create a new src-dest file mapping object.
			files.push({
			src: [src],
			dest: dest,
			});
			// And store a reference for later use.
			fileByDest[dest] = files[files.length - 1];
			}
			});
			return files;
			};

			// Return a mapping of src-dest filepaths from files matching the given
			// wildcard patterns.
			globule.findMapping = function(patterns, options) {
			return globule.mapping(globule.find(patterns, options), options);
			};