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