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shrine-medco/shrine-webclient/src/main/html/node_modules/micromatch/lib/expand.js
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expand.js
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/*!
* micromatch <https://github.com/jonschlinkert/micromatch>
*
* Copyright (c) 2014-2015, Jon Schlinkert.
* Licensed under the MIT License.
*/
'use strict';
var utils = require('./utils');
var Glob = require('./glob');
/**
* Expose `expand`
*/
module.exports = expand;
/**
* Expand a glob pattern to resolve braces and
* similar patterns before converting to regex.
*
* @param {String|Array} `pattern`
* @param {Array} `files`
* @param {Options} `opts`
* @return {Array}
*/
function expand(pattern, options) {
if (typeof pattern !== 'string') {
throw new TypeError('micromatch.expand(): argument should be a string.');
}
var glob = new Glob(pattern, options || {});
var opts = glob.options;
if (!utils.isGlob(pattern)) {
glob.pattern = glob.pattern.replace(/([\/.])/g, '\\$1');
return glob;
}
glob.pattern = glob.pattern.replace(/(\+)(?!\()/g, '\\$1');
glob.pattern = glob.pattern.split('$').join('\\$');
if (typeof opts.braces !== 'boolean' && typeof opts.nobraces !== 'boolean') {
opts.braces = true;
}
if (glob.pattern === '.*') {
return {
pattern: '\\.' + star,
tokens: tok,
options: opts
};
}
if (glob.pattern === '*') {
return {
pattern: oneStar(opts.dot),
tokens: tok,
options: opts
};
}
// parse the glob pattern into tokens
glob.parse();
var tok = glob.tokens;
tok.is.negated = opts.negated;
// dotfile handling
if ((opts.dotfiles === true || tok.is.dotfile) && opts.dot !== false) {
opts.dotfiles = true;
opts.dot = true;
}
if ((opts.dotdirs === true || tok.is.dotdir) && opts.dot !== false) {
opts.dotdirs = true;
opts.dot = true;
}
// check for braces with a dotfile pattern
if (/[{,]\./.test(glob.pattern)) {
opts.makeRe = false;
opts.dot = true;
}
if (opts.nonegate !== true) {
opts.negated = glob.negated;
}
// if the leading character is a dot or a slash, escape it
if (glob.pattern.charAt(0) === '.' && glob.pattern.charAt(1) !== '/') {
glob.pattern = '\\' + glob.pattern;
}
/**
* Extended globs
*/
// expand braces, e.g `{1..5}`
glob.track('before braces');
if (tok.is.braces) {
glob.braces();
}
glob.track('after braces');
// expand extglobs, e.g `foo/!(a|b)`
glob.track('before extglob');
if (tok.is.extglob) {
glob.extglob();
}
glob.track('after extglob');
// expand brackets, e.g `[[:alpha:]]`
glob.track('before brackets');
if (tok.is.brackets) {
glob.brackets();
}
glob.track('after brackets');
// special patterns
glob._replace('[!', '[^');
glob._replace('(?', '(%~');
glob._replace(/\[\]/, '\\[\\]');
glob._replace('/[', '/' + (opts.dot ? dotfiles : nodot) + '[', true);
glob._replace('/?', '/' + (opts.dot ? dotfiles : nodot) + '[^/]', true);
glob._replace('/.', '/(?=.)\\.', true);
// windows drives
glob._replace(/^(\w):([\\\/]+?)/gi, '(?=.)$1:$2', true);
// negate slashes in exclusion ranges
if (glob.pattern.indexOf('[^') !== -1) {
glob.pattern = negateSlash(glob.pattern);
}
if (opts.globstar !== false && glob.pattern === '**') {
glob.pattern = globstar(opts.dot);
} else {
glob.pattern = balance(glob.pattern, '[', ']');
glob.escape(glob.pattern);
// if the pattern has `**`
if (tok.is.globstar) {
glob.pattern = collapse(glob.pattern, '/**');
glob.pattern = collapse(glob.pattern, '**/');
glob._replace('/**/', '(?:/' + globstar(opts.dot) + '/|/)', true);
glob._replace(/\*{2,}/g, '**');
// 'foo/*'
glob._replace(/(\w+)\*(?!\/)/g, '$1[^/]*?', true);
glob._replace(/\*\*\/\*(\w)/g, globstar(opts.dot) + '\\/' + (opts.dot ? dotfiles : nodot) + '[^/]*?$1', true);
if (opts.dot !== true) {
glob._replace(/\*\*\/(.)/g, '(?:**\\/|)$1');
}
// 'foo/**' or '{**,*}', but not 'foo**'
if (tok.path.dirname !== '' || /,\*\*|\*\*,/.test(glob.orig)) {
glob._replace('**', globstar(opts.dot), true);
}
}
// ends with /*
glob._replace(/\/\*$/, '\\/' + oneStar(opts.dot), true);
// ends with *, no slashes
glob._replace(/(?!\/)\*$/, star, true);
// has 'n*.' (partial wildcard w/ file extension)
glob._replace(/([^\/]+)\*/, '$1' + oneStar(true), true);
// has '*'
glob._replace('*', oneStar(opts.dot), true);
glob._replace('?.', '?\\.', true);
glob._replace('?:', '?:', true);
glob._replace(/\?+/g, function(match) {
var len = match.length;
if (len === 1) {
return qmark;
}
return qmark + '{' + len + '}';
});
// escape '.abc' => '\\.abc'
glob._replace(/\.([*\w]+)/g, '\\.$1');
// fix '[^\\\\/]'
glob._replace(/\[\^[\\\/]+\]/g, qmark);
// '///' => '\/'
glob._replace(/\/+/g, '\\/');
// '\\\\\\' => '\\'
glob._replace(/\\{2,}/g, '\\');
}
// unescape previously escaped patterns
glob.unescape(glob.pattern);
glob._replace('__UNESC_STAR__', '*');
// escape dots that follow qmarks
glob._replace('?.', '?\\.');
// remove unnecessary slashes in character classes
glob._replace('[^\\/]', qmark);
if (glob.pattern.length > 1) {
if (/^[\[?*]/.test(glob.pattern)) {
// only prepend the string if we don't want to match dotfiles
glob.pattern = (opts.dot ? dotfiles : nodot) + glob.pattern;
}
}
return glob;
}
/**
* Collapse repeated character sequences.
*
* ```js
* collapse('a/../../../b', '../');
* //=> 'a/../b'
* ```
*
* @param {String} `str`
* @param {String} `ch` Character sequence to collapse
* @return {String}
*/
function collapse(str, ch) {
var res = str.split(ch);
var isFirst = res[0] === '';
var isLast = res[res.length - 1] === '';
res = res.filter(Boolean);
if (isFirst) res.unshift('');
if (isLast) res.push('');
return res.join(ch);
}
/**
* Negate slashes in exclusion ranges, per glob spec:
*
* ```js
* negateSlash('[^foo]');
* //=> '[^\\/foo]'
* ```
*
* @param {String} `str` glob pattern
* @return {String}
*/
function negateSlash(str) {
return str.replace(/\[\^([^\]]*?)\]/g, function(match, inner) {
if (inner.indexOf('/') === -1) {
inner = '\\/' + inner;
}
return '[^' + inner + ']';
});
}
/**
* Escape imbalanced braces/bracket. This is a very
* basic, naive implementation that only does enough
* to serve the purpose.
*/
function balance(str, a, b) {
var aarr = str.split(a);
var alen = aarr.join('').length;
var blen = str.split(b).join('').length;
if (alen !== blen) {
str = aarr.join('\\' + a);
return str.split(b).join('\\' + b);
}
return str;
}
/**
* Special patterns to be converted to regex.
* Heuristics are used to simplify patterns
* and speed up processing.
*/
/* eslint no-multi-spaces: 0 */
var qmark = '[^/]';
var star = qmark + '*?';
var nodot = '(?!\\.)(?=.)';
var dotfileGlob = '(?:\\/|^)\\.{1,2}($|\\/)';
var dotfiles = '(?!' + dotfileGlob + ')(?=.)';
var twoStarDot = '(?:(?!' + dotfileGlob + ').)*?';
/**
* Create a regex for `*`.
*
* If `dot` is true, or the pattern does not begin with
* a leading star, then return the simpler regex.
*/
function oneStar(dotfile) {
return dotfile ? '(?!' + dotfileGlob + ')(?=.)' + star : (nodot + star);
}
function globstar(dotfile) {
if (dotfile) { return twoStarDot; }
return '(?:(?!(?:\\/|^)\\.).)*?';
}
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