157 lines
3.7 KiB
JavaScript
157 lines
3.7 KiB
JavaScript
/*!
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* parse-glob <https://github.com/jonschlinkert/parse-glob>
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*
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* Copyright (c) 2015, Jon Schlinkert.
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* Licensed under the MIT License.
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*/
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'use strict';
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var isGlob = require('is-glob');
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var findBase = require('glob-base');
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var extglob = require('is-extglob');
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var dotfile = require('is-dotfile');
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/**
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* Expose `cache`
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*/
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var cache = module.exports.cache = {};
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/**
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* Parse a glob pattern into tokens.
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*
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* When no paths or '**' are in the glob, we use a
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* different strategy for parsing the filename, since
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* file names can contain braces and other difficult
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* patterns. such as:
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*
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* - `*.{a,b}`
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* - `(**|*.js)`
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*/
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module.exports = function parseGlob(glob) {
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if (cache.hasOwnProperty(glob)) {
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return cache[glob];
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}
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var tok = {};
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tok.orig = glob;
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tok.is = {};
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// unescape dots and slashes in braces/brackets
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glob = escape(glob);
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var parsed = findBase(glob);
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tok.is.glob = parsed.isGlob;
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tok.glob = parsed.glob;
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tok.base = parsed.base;
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var segs = /([^\/]*)$/.exec(glob);
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tok.path = {};
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tok.path.dirname = '';
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tok.path.basename = segs[1] || '';
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tok.path.dirname = glob.split(tok.path.basename).join('') || '';
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var basename = (tok.path.basename || '').split('.') || '';
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tok.path.filename = basename[0] || '';
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tok.path.extname = basename.slice(1).join('.') || '';
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tok.path.ext = '';
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if (isGlob(tok.path.dirname) && !tok.path.basename) {
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if (!/\/$/.test(tok.glob)) {
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tok.path.basename = tok.glob;
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}
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tok.path.dirname = tok.base;
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}
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if (glob.indexOf('/') === -1 && !tok.is.globstar) {
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tok.path.dirname = '';
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tok.path.basename = tok.orig;
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}
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var dot = tok.path.basename.indexOf('.');
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if (dot !== -1) {
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tok.path.filename = tok.path.basename.slice(0, dot);
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tok.path.extname = tok.path.basename.slice(dot);
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}
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if (tok.path.extname.charAt(0) === '.') {
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var exts = tok.path.extname.split('.');
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tok.path.ext = exts[exts.length - 1];
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}
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// unescape dots and slashes in braces/brackets
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tok.glob = unescape(tok.glob);
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tok.path.dirname = unescape(tok.path.dirname);
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tok.path.basename = unescape(tok.path.basename);
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tok.path.filename = unescape(tok.path.filename);
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tok.path.extname = unescape(tok.path.extname);
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// Booleans
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var is = (glob && tok.is.glob);
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tok.is.negated = glob && glob.charAt(0) === '!';
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tok.is.extglob = glob && extglob(glob);
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tok.is.braces = has(is, glob, '{');
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tok.is.brackets = has(is, glob, '[:');
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tok.is.globstar = has(is, glob, '**');
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tok.is.dotfile = dotfile(tok.path.basename) || dotfile(tok.path.filename);
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tok.is.dotdir = dotdir(tok.path.dirname);
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return (cache[glob] = tok);
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}
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/**
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* Returns true if the glob matches dot-directories.
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*
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* @param {Object} `tok` The tokens object
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* @param {Object} `path` The path object
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* @return {Object}
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*/
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function dotdir(base) {
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if (base.indexOf('/.') !== -1) {
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return true;
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}
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if (base.charAt(0) === '.' && base.charAt(1) !== '/') {
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return true;
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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 the pattern has the given `ch`aracter(s)
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*
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* @param {Object} `glob` The glob pattern.
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* @param {Object} `ch` The character to test for
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* @return {Object}
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*/
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function has(is, glob, ch) {
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return is && glob.indexOf(ch) !== -1;
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}
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/**
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* Escape/unescape utils
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*/
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function escape(str) {
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var re = /\{([^{}]*?)}|\(([^()]*?)\)|\[([^\[\]]*?)\]/g;
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return str.replace(re, function (outter, braces, parens, brackets) {
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var inner = braces || parens || brackets;
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if (!inner) { return outter; }
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return outter.split(inner).join(esc(inner));
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});
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}
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function esc(str) {
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str = str.split('/').join('__SLASH__');
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str = str.split('.').join('__DOT__');
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return str;
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}
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function unescape(str) {
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str = str.split('__SLASH__').join('/');
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str = str.split('__DOT__').join('.');
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return str;
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}
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