172 lines
5.5 KiB
JavaScript
172 lines
5.5 KiB
JavaScript
/*
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* globule
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* https://github.com/cowboy/node-globule
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*
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* Copyright (c) 2013 "Cowboy" Ben Alman
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* Licensed under the MIT license.
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*/
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'use strict';
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var fs = require('fs');
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var path = require('path');
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var _ = require('lodash');
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var glob = require('glob');
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var minimatch = require('minimatch');
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// The module.
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var globule = exports;
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// Process specified wildcard glob patterns or filenames against a
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// callback, excluding and uniquing files in the result set.
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function processPatterns(patterns, fn) {
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return _.flatten(patterns).reduce(function(result, pattern) {
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if (pattern.indexOf('!') === 0) {
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// If the first character is ! all matches via this pattern should be
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// removed from the result set.
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pattern = pattern.slice(1);
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return _.difference(result, fn(pattern));
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} else {
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// Otherwise, add all matching filepaths to the result set.
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return _.union(result, fn(pattern));
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}
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}, []);
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}
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// Match a filepath or filepaths against one or more wildcard patterns. Returns
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// all matching filepaths. This behaves just like minimatch.match, but supports
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// any number of patterns.
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globule.match = function(patterns, filepaths, options) {
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// Return empty set if either patterns or filepaths was omitted.
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if (patterns == null || filepaths == null) { return []; }
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// Normalize patterns and filepaths to arrays.
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if (!_.isArray(patterns)) { patterns = [patterns]; }
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if (!_.isArray(filepaths)) { filepaths = [filepaths]; }
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// Return empty set if there are no patterns or filepaths.
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if (patterns.length === 0 || filepaths.length === 0) { return []; }
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// Return all matching filepaths.
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return processPatterns(patterns, function(pattern) {
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return minimatch.match(filepaths, pattern, options || {});
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});
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};
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// Match a filepath or filepaths against one or more wildcard patterns. Returns
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// true if any of the patterns match.
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globule.isMatch = function() {
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return globule.match.apply(null, arguments).length > 0;
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};
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// Return an array of all file paths that match the given wildcard patterns.
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globule.find = function() {
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var args = _.toArray(arguments);
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// If the last argument is an options object, remove it from args.
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var options = _.isPlainObject(args[args.length - 1]) ? args.pop() : {};
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// Use the first argument if it's an Array, otherwise use all arguments.
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var patterns = _.isArray(args[0]) ? args[0] : args;
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// Return empty set if there are no patterns or filepaths.
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if (patterns.length === 0) { return []; }
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var srcBase = options.srcBase || options.cwd;
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// Create glob-specific options object.
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var globOptions = _.extend({}, options);
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if (srcBase) {
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globOptions.cwd = srcBase;
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}
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// Get all matching filepaths.
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var matches = processPatterns(patterns, function(pattern) {
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return glob.sync(pattern, globOptions);
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});
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// If srcBase and prefixBase were specified, prefix srcBase to matched paths.
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if (srcBase && options.prefixBase) {
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matches = matches.map(function(filepath) {
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return path.join(srcBase, filepath);
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});
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}
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// Filter result set?
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if (options.filter) {
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matches = matches.filter(function(filepath) {
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// If srcBase was specified but prefixBase was NOT, prefix srcBase
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// temporarily, for filtering.
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if (srcBase && !options.prefixBase) {
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filepath = path.join(srcBase, filepath);
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}
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try {
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if (_.isFunction(options.filter)) {
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return options.filter(filepath, options);
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} else {
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// If the file is of the right type and exists, this should work.
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return fs.statSync(filepath)[options.filter]();
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}
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} catch(err) {
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// Otherwise, it's probably not the right type.
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return false;
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}
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});
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}
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return matches;
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};
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var pathSeparatorRe = /[\/\\]/g;
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var extDotRe = {
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first: /(\.[^\/]*)?$/,
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last: /(\.[^\/\.]*)?$/,
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};
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function rename(dest, options) {
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// Flatten path?
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if (options.flatten) {
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dest = path.basename(dest);
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}
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// Change the extension?
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if (options.ext) {
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dest = dest.replace(extDotRe[options.extDot], options.ext);
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}
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// Join dest and destBase?
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if (options.destBase) {
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dest = path.join(options.destBase, dest);
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}
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return dest;
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}
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// Build a mapping of src-dest filepaths from the given set of filepaths.
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globule.mapping = function(filepaths, options) {
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// Return empty set if filepaths was omitted.
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if (filepaths == null) { return []; }
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options = _.defaults({}, options, {
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extDot: 'first',
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rename: rename,
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});
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var files = [];
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var fileByDest = {};
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// Find all files matching pattern, using passed-in options.
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filepaths.forEach(function(src) {
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// Generate destination filename.
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var dest = options.rename(src, options);
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// Prepend srcBase to all src paths.
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if (options.srcBase) {
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src = path.join(options.srcBase, src);
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}
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// Normalize filepaths to be unix-style.
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dest = dest.replace(pathSeparatorRe, '/');
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src = src.replace(pathSeparatorRe, '/');
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// Map correct src path to dest path.
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if (fileByDest[dest]) {
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// If dest already exists, push this src onto that dest's src array.
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fileByDest[dest].src.push(src);
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} else {
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// Otherwise create a new src-dest file mapping object.
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files.push({
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src: [src],
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dest: dest,
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});
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// And store a reference for later use.
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fileByDest[dest] = files[files.length - 1];
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}
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});
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return files;
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};
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// Return a mapping of src-dest filepaths from files matching the given
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// wildcard patterns.
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globule.findMapping = function(patterns, options) {
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return globule.mapping(globule.find(patterns, options), options);
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};
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