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Edit File : minimatch.js \| Size : 24.75 KB
module.exports = minimatch minimatch.Minimatch = Minimatch var path = { sep: '/' } try { path = require('path') } catch (er) {} var GLOBSTAR = minimatch.GLOBSTAR = Minimatch.GLOBSTAR = {} var expand = require('brace-expansion') var plTypes = { '!': { open: '(?:(?!(?:', close: '))[^/]?)'}, '?': { open: '(?:', close: ')?' }, '+': { open: '(?:', close: ')+' }, '': { open: '(?:', close: ')' }, '@': { open: '(?:', close: ')' } } // any single thing other than / // don't need to escape / when using new RegExp() var qmark = '[^/]' // => any number of characters var star = qmark + '?' // * when dots are allowed. Anything goes, except .. and . // not (^ or / followed by one or two dots followed by $ or /), // followed by anything, any number of times. var twoStarDot = '(?:(?!(?:\\\/\|^)(?:\\.{1,2})($\|\\\/)).)?' // not a ^ or / followed by a dot, // followed by anything, any number of times. var twoStarNoDot = '(?:(?!(?:\\\/\|^)\\.).)?' // characters that need to be escaped in RegExp. var reSpecials = charSet('().{}+?[]^$\\!') // "abc" -> { a:true, b:true, c:true } function charSet (s) { return s.split('').reduce(function (set, c) { set[c] = true return set }, {}) } // normalizes slashes. var slashSplit = /\/+/ minimatch.filter = filter function filter (pattern, options) { options = options \|\| {} return function (p, i, list) { return minimatch(p, pattern, options) } } function ext (a, b) { a = a \|\| {} b = b \|\| {} var t = {} Object.keys(b).forEach(function (k) { t[k] = b[k] }) Object.keys(a).forEach(function (k) { t[k] = a[k] }) return t } minimatch.defaults = function (def) { if (!def \|\| !Object.keys(def).length) return minimatch var orig = minimatch var m = function minimatch (p, pattern, options) { return orig.minimatch(p, pattern, ext(def, options)) } m.Minimatch = function Minimatch (pattern, options) { return new orig.Minimatch(pattern, ext(def, options)) } return m } Minimatch.defaults = function (def) { if (!def \|\| !Object.keys(def).length) return Minimatch return minimatch.defaults(def).Minimatch } function minimatch (p, pattern, options) { if (typeof pattern !== 'string') { throw new TypeError('glob pattern string required') } if (!options) options = {} // shortcut: comments match nothing. if (!options.nocomment && pattern.charAt(0) === '#') { return false } // "" only matches "" if (pattern.trim() === '') return p === '' return new Minimatch(pattern, options).match(p) } function Minimatch (pattern, options) { if (!(this instanceof Minimatch)) { return new Minimatch(pattern, options) } if (typeof pattern !== 'string') { throw new TypeError('glob pattern string required') } if (!options) options = {} pattern = pattern.trim() // windows support: need to use /, not \ if (path.sep !== '/') { pattern = pattern.split(path.sep).join('/') } this.options = options this.set = [] this.pattern = pattern this.regexp = null this.negate = false this.comment = false this.empty = false // make the set of regexps etc. this.make() } Minimatch.prototype.debug = function () {} Minimatch.prototype.make = make function make () { // don't do it more than once. if (this._made) return var pattern = this.pattern var options = this.options // empty patterns and comments match nothing. if (!options.nocomment && pattern.charAt(0) === '#') { this.comment = true return } if (!pattern) { this.empty = true return } // step 1: figure out negation, etc. this.parseNegate() // step 2: expand braces var set = this.globSet = this.braceExpand() if (options.debug) this.debug = console.error this.debug(this.pattern, set) // step 3: now we have a set, so turn each one into a series of path-portion // matching patterns. // These will be regexps, except in the case of "", which is // set to the GLOBSTAR object for globstar behavior, // and will not contain any / characters set = this.globParts = set.map(function (s) { return s.split(slashSplit) }) this.debug(this.pattern, set) // glob --> regexps set = set.map(function (s, si, set) { return s.map(this.parse, this) }, this) this.debug(this.pattern, set) // filter out everything that didn't compile properly. set = set.filter(function (s) { return s.indexOf(false) === -1 }) this.debug(this.pattern, set) this.set = set } Minimatch.prototype.parseNegate = parseNegate function parseNegate () { var pattern = this.pattern var negate = false var options = this.options var negateOffset = 0 if (options.nonegate) return for (var i = 0, l = pattern.length ; i < l && pattern.charAt(i) === '!' ; i++) { negate = !negate negateOffset++ } if (negateOffset) this.pattern = pattern.substr(negateOffset) this.negate = negate } // Brace expansion: // a{b,c}d -> abd acd // a{b,}c -> abc ac // a{0..3}d -> a0d a1d a2d a3d // a{b,c{d,e}f}g -> abg acdfg acefg // a{b,c}d{e,f}g -> abdeg acdeg abdeg abdfg // // Invalid sets are not expanded. // a{2..}b -> a{2..}b // a{b}c -> a{b}c minimatch.braceExpand = function (pattern, options) { return braceExpand(pattern, options) } Minimatch.prototype.braceExpand = braceExpand function braceExpand (pattern, options) { if (!options) { if (this instanceof Minimatch) { options = this.options } else { options = {} } } pattern = typeof pattern === 'undefined' ? this.pattern : pattern if (typeof pattern === 'undefined') { throw new TypeError('undefined pattern') } if (options.nobrace \|\| !pattern.match(/\{.\}/)) { // shortcut. no need to expand. return [pattern] } return expand(pattern) } // parse a component of the expanded set. // At this point, no pattern may contain "/" in it // so we're going to return a 2d array, where each entry is the full // pattern, split on '/', and then turned into a regular expression. // A regexp is made at the end which joins each array with an // escaped /, and another full one which joins each regexp with \|. // // Following the lead of Bash 4.1, note that "*" only has special meaning // when it is the only* thing in a path portion. Otherwise, any series // of * is equivalent to a single . Globstar behavior is enabled by // default, and can be disabled by setting options.noglobstar. Minimatch.prototype.parse = parse var SUBPARSE = {} function parse (pattern, isSub) { if (pattern.length > 1024 64) { throw new TypeError('pattern is too long') } var options = this.options // shortcuts if (!options.noglobstar && pattern === '*') return GLOBSTAR if (pattern === '') return '' var re = '' var hasMagic = !!options.nocase var escaping = false // ? => one single character var patternListStack = [] var negativeLists = [] var stateChar var inClass = false var reClassStart = -1 var classStart = -1 // . and .. never match anything that doesn't start with ., // even when options.dot is set. var patternStart = pattern.charAt(0) === '.' ? '' // anything // not (start or / followed by . or .. followed by / or end) : options.dot ? '(?!(?:^\|\\\/)\\.{1,2}(?:$\|\\\/))' : '(?!\\.)' var self = this function clearStateChar () { if (stateChar) { // we had some state-tracking character // that wasn't consumed by this pass. switch (stateChar) { case '': re += star hasMagic = true break case '?': re += qmark hasMagic = true break default: re += '\\' + stateChar break } self.debug('clearStateChar %j %j', stateChar, re) stateChar = false } } for (var i = 0, len = pattern.length, c ; (i < len) && (c = pattern.charAt(i)) ; i++) { this.debug('%s\t%s %s %j', pattern, i, re, c) // skip over any that are escaped. if (escaping && reSpecials[c]) { re += '\\' + c escaping = false continue } switch (c) { case '/': // completely not allowed, even escaped. // Should already be path-split by now. return false case '\\': clearStateChar() escaping = true continue // the various stateChar values // for the "extglob" stuff. case '?': case '': case '+': case '@': case '!': this.debug('%s\t%s %s %j <-- stateChar', pattern, i, re, c) // all of those are literals inside a class, except that // the glob [!a] means [^a] in regexp if (inClass) { this.debug(' in class') if (c === '!' && i === classStart + 1) c = '^' re += c continue } // if we already have a stateChar, then it means // that there was something like * or +? in there. // Handle the stateChar, then proceed with this one. self.debug('call clearStateChar %j', stateChar) clearStateChar() stateChar = c // if extglob is disabled, then +(asdf\|foo) isn't a thing. // just clear the statechar now, rather than even diving into // the patternList stuff. if (options.noext) clearStateChar() continue case '(': if (inClass) { re += '(' continue } if (!stateChar) { re += '\\(' continue } patternListStack.push({ type: stateChar, start: i - 1, reStart: re.length, open: plTypes[stateChar].open, close: plTypes[stateChar].close }) // negation is (?:(?!js)[^/]) re += stateChar === '!' ? '(?:(?!(?:' : '(?:' this.debug('plType %j %j', stateChar, re) stateChar = false continue case ')': if (inClass \|\| !patternListStack.length) { re += '\\)' continue } clearStateChar() hasMagic = true var pl = patternListStack.pop() // negation is (?:(?!js)[^/]) // The others are (?:<pattern>)<type> re += pl.close if (pl.type === '!') { negativeLists.push(pl) } pl.reEnd = re.length continue case '\|': if (inClass \|\| !patternListStack.length \|\| escaping) { re += '\\\|' escaping = false continue } clearStateChar() re += '\|' continue // these are mostly the same in regexp and glob case '[': // swallow any state-tracking char before the [ clearStateChar() if (inClass) { re += '\\' + c continue } inClass = true classStart = i reClassStart = re.length re += c continue case ']': // a right bracket shall lose its special // meaning and represent itself in // a bracket expression if it occurs // first in the list. -- POSIX.2 2.8.3.2 if (i === classStart + 1 \|\| !inClass) { re += '\\' + c escaping = false continue } // handle the case where we left a class open. // "[z-a]" is valid, equivalent to "\[z-a\]" if (inClass) { // split where the last [ was, make sure we don't have // an invalid re. if so, re-walk the contents of the // would-be class to re-translate any characters that // were passed through as-is // TODO: It would probably be faster to determine this // without a try/catch and a new RegExp, but it's tricky // to do safely. For now, this is safe and works. var cs = pattern.substring(classStart + 1, i) try { RegExp('[' + cs + ']') } catch (er) { // not a valid class! var sp = this.parse(cs, SUBPARSE) re = re.substr(0, reClassStart) + '\\[' + sp[0] + '\\]' hasMagic = hasMagic \|\| sp[1] inClass = false continue } } // finish up the class. hasMagic = true inClass = false re += c continue default: // swallow any state char that wasn't consumed clearStateChar() if (escaping) { // no need escaping = false } else if (reSpecials[c] && !(c === '^' && inClass)) { re += '\\' } re += c } // switch } // for // handle the case where we left a class open. // "[abc" is valid, equivalent to "\[abc" if (inClass) { // split where the last [ was, and escape it // this is a huge pita. We now have to re-walk // the contents of the would-be class to re-translate // any characters that were passed through as-is cs = pattern.substr(classStart + 1) sp = this.parse(cs, SUBPARSE) re = re.substr(0, reClassStart) + '\\[' + sp[0] hasMagic = hasMagic \|\| sp[1] } // handle the case where we had a +( thing at the end // of the pattern. // each pattern list stack adds 3 chars, and we need to go through // and escape any \| chars that were passed through as-is for the regexp. // Go through and escape them, taking care not to double-escape any // \| chars that were already escaped. for (pl = patternListStack.pop(); pl; pl = patternListStack.pop()) { var tail = re.slice(pl.reStart + pl.open.length) this.debug('setting tail', re, pl) // maybe some even number of \, then maybe 1 \, followed by a \| tail = tail.replace(/((?:\\{2}){0,64})(\\?)\\|/g, function (_, $1, $2) { if (!$2) { // the \| isn't already escaped, so escape it. $2 = '\\' } // need to escape all those slashes again, without escaping the // one that we need for escaping the \| character. As it works out, // escaping an even number of slashes can be done by simply repeating // it exactly after itself. That's why this trick works. // // I am sorry that you have to see this. return $1 + $1 + $2 + '\|' }) this.debug('tail=%j\n %s', tail, tail, pl, re) var t = pl.type === '' ? star : pl.type === '?' ? qmark : '\\' + pl.type hasMagic = true re = re.slice(0, pl.reStart) + t + '\\(' + tail } // handle trailing things that only matter at the very end. clearStateChar() if (escaping) { // trailing \\ re += '\\\\' } // only need to apply the nodot start if the re starts with // something that could conceivably capture a dot var addPatternStart = false switch (re.charAt(0)) { case '.': case '[': case '(': addPatternStart = true } // Hack to work around lack of negative lookbehind in JS // A pattern like: .!(x).!(y\|z) needs to ensure that a name // like 'a.xyz.yz' doesn't match. So, the first negative // lookahead, has to look ALL the way ahead, to the end of // the pattern. for (var n = negativeLists.length - 1; n > -1; n--) { var nl = negativeLists[n] var nlBefore = re.slice(0, nl.reStart) var nlFirst = re.slice(nl.reStart, nl.reEnd - 8) var nlLast = re.slice(nl.reEnd - 8, nl.reEnd) var nlAfter = re.slice(nl.reEnd) nlLast += nlAfter // Handle nested stuff like (.js\|!(.json)), where open parens // mean that we should not* include the ) in the bit that is considered // "after" the negated section. var openParensBefore = nlBefore.split('(').length - 1 var cleanAfter = nlAfter for (i = 0; i < openParensBefore; i++) { cleanAfter = cleanAfter.replace(/\)[+?]?/, '') } nlAfter = cleanAfter var dollar = '' if (nlAfter === '' && isSub !== SUBPARSE) { dollar = '$' } var newRe = nlBefore + nlFirst + nlAfter + dollar + nlLast re = newRe } // if the re is not "" at this point, then we need to make sure // it doesn't match against an empty path part. // Otherwise a/ will match a/, which it should not. if (re !== '' && hasMagic) { re = '(?=.)' + re } if (addPatternStart) { re = patternStart + re } // parsing just a piece of a larger pattern. if (isSub === SUBPARSE) { return [re, hasMagic] } // skip the regexp for non-magical patterns // unescape anything in it, though, so that it'll be // an exact match against a file etc. if (!hasMagic) { return globUnescape(pattern) } var flags = options.nocase ? 'i' : '' try { var regExp = new RegExp('^' + re + '$', flags) } catch (er) { // If it was an invalid regular expression, then it can't match // anything. This trick looks for a character after the end of // the string, which is of course impossible, except in multi-line // mode, but it's not a /m regex. return new RegExp('$.') } regExp._glob = pattern regExp._src = re return regExp } minimatch.makeRe = function (pattern, options) { return new Minimatch(pattern, options \|\| {}).makeRe() } Minimatch.prototype.makeRe = makeRe function makeRe () { if (this.regexp \|\| this.regexp === false) return this.regexp // at this point, this.set is a 2d array of partial // pattern strings, or "*". // // It's better to use .match(). This function shouldn't // be used, really, but it's pretty convenient sometimes, // when you just want to work with a regex. var set = this.set if (!set.length) { this.regexp = false return this.regexp } var options = this.options var twoStar = options.noglobstar ? star : options.dot ? twoStarDot : twoStarNoDot var flags = options.nocase ? 'i' : '' var re = set.map(function (pattern) { return pattern.map(function (p) { return (p === GLOBSTAR) ? twoStar : (typeof p === 'string') ? regExpEscape(p) : p._src }).join('\\\/') }).join('\|') // must match entire pattern // ending in a or ** will make it less strict. re = '^(?:' + re + ')$' // can match anything, as long as it's not this. if (this.negate) re = '^(?!' + re + ').$' try { this.regexp = new RegExp(re, flags) } catch (ex) { this.regexp = false } return this.regexp } minimatch.match = function (list, pattern, options) { options = options \|\| {} var mm = new Minimatch(pattern, options) list = list.filter(function (f) { return mm.match(f) }) if (mm.options.nonull && !list.length) { list.push(pattern) } return list } Minimatch.prototype.match = match function match (f, partial) { this.debug('match', f, this.pattern) // short-circuit in the case of busted things. // comments, etc. if (this.comment) return false if (this.empty) return f === '' if (f === '/' && partial) return true var options = this.options // windows: need to use /, not \ if (path.sep !== '/') { f = f.split(path.sep).join('/') } // treat the test path as a set of pathparts. f = f.split(slashSplit) this.debug(this.pattern, 'split', f) // just ONE of the pattern sets in this.set needs to match // in order for it to be valid. If negating, then just one // match means that we have failed. // Either way, return on the first hit. var set = this.set this.debug(this.pattern, 'set', set) // Find the basename of the path by looking for the last non-empty segment var filename var i for (i = f.length - 1; i >= 0; i--) { filename = f[i] if (filename) break } for (i = 0; i < set.length; i++) { var pattern = set[i] var file = f if (options.matchBase && pattern.length === 1) { file = [filename] } var hit = this.matchOne(file, pattern, partial) if (hit) { if (options.flipNegate) return true return !this.negate } } // didn't get any hits. this is success if it's a negative // pattern, failure otherwise. if (options.flipNegate) return false return this.negate } // set partial to true to test if, for example, // "/a/b" matches the start of "//b//d" // Partial means, if you run out of file before you run // out of pattern, then that's fine, as long as all // the parts match. Minimatch.prototype.matchOne = function (file, pattern, partial) { var options = this.options this.debug('matchOne', { 'this': this, file: file, pattern: pattern }) this.debug('matchOne', file.length, pattern.length) for (var fi = 0, pi = 0, fl = file.length, pl = pattern.length ; (fi < fl) && (pi < pl) ; fi++, pi++) { this.debug('matchOne loop') var p = pattern[pi] var f = file[fi] this.debug(pattern, p, f) // should be impossible. // some invalid regexp stuff in the set. if (p === false) return false if (p === GLOBSTAR) { this.debug('GLOBSTAR', [pattern, p, f]) // "" // a//b//c would match the following: // a/b/x/y/z/c // a/x/y/z/b/c // a/b/x/b/x/c // a/b/c // To do this, take the rest of the pattern after // the , and see if it would match the file remainder. // If so, return success. // If not, the * "swallows" a segment, and try again. // This is recursively awful. // // a//b//c matching a/b/x/y/z/c // - a matches a // - doublestar // - matchOne(b/x/y/z/c, b//c) // - b matches b // - doublestar // - matchOne(x/y/z/c, c) -> no // - matchOne(y/z/c, c) -> no // - matchOne(z/c, c) -> no // - matchOne(c, c) yes, hit var fr = fi var pr = pi + 1 if (pr === pl) { this.debug(' at the end') // a ** at the end will just swallow the rest. // We have found a match. // however, it will not swallow /.x, unless // options.dot is set. // . and .. are never matched by , for explosively // exponential reasons. for (; fi < fl; fi++) { if (file[fi] === '.' \|\| file[fi] === '..' \|\| (!options.dot && file[fi].charAt(0) === '.')) return false } return true } // ok, let's see if we can swallow whatever we can. while (fr < fl) { var swallowee = file[fr] this.debug('\nglobstar while', file, fr, pattern, pr, swallowee) // XXX remove this slice. Just pass the start index. if (this.matchOne(file.slice(fr), pattern.slice(pr), partial)) { this.debug('globstar found match!', fr, fl, swallowee) // found a match. return true } else { // can't swallow "." or ".." ever. // can only swallow ".foo" when explicitly asked. if (swallowee === '.' \|\| swallowee === '..' \|\| (!options.dot && swallowee.charAt(0) === '.')) { this.debug('dot detected!', file, fr, pattern, pr) break } // swallows a segment, and continue. this.debug('globstar swallow a segment, and continue') fr++ } } // no match was found. // However, in partial mode, we can't say this is necessarily over. // If there's more pattern left, then if (partial) { // ran out of file this.debug('\n>>> no match, partial?', file, fr, pattern, pr) if (fr === fl) return true } return false } // something other than ** // non-magic patterns just have to match exactly // patterns with magic have been turned into regexps. var hit if (typeof p === 'string') { if (options.nocase) { hit = f.toLowerCase() === p.toLowerCase() } else { hit = f === p } this.debug('string match', p, f, hit) } else { hit = f.match(p) this.debug('pattern match', p, f, hit) } if (!hit) return false } // Note: ending in / means that we'll get a final "" // at the end of the pattern. This can only match a // corresponding "" at the end of the file. // If the file ends in /, then it can only match a // a pattern that ends in /, unless the pattern just // doesn't have any more for it. But, a/b/ should not // match "a/b/", even though "" matches against the // [^/]? pattern, except in partial mode, where it might // simply not be reached yet. // However, a/b/ should still satisfy a/* // now either we fell off the end of the pattern, or we're done. if (fi === fl && pi === pl) { // ran out of pattern and filename at the same time. // an exact hit! return true } else if (fi === fl) { // ran out of file, but still had pattern left. // this is ok if we're doing the match as part of // a glob fs traversal. return partial } else if (pi === pl) { // ran out of pattern, still have file left. // this is only acceptable if we're on the very last // empty segment of a file with a trailing slash. // a/* should match a/b/ var emptyFileEnd = (fi === fl - 1) && (file[fi] === '') return emptyFileEnd } // should be unreachable. throw new Error('wtf?') } // replace stuff like \* with * function globUnescape (s) { return s.replace(/\\(.)/g, '$1') } function regExpEscape (s) { return s.replace(/[-[\]{}()*+?.,\\^$\|#\s]/g, '\\$&') } Back

Edit File : minimatch.js | Size : 24.75 KB

module.exports = minimatch
minimatch.Minimatch = Minimatch

var path = { sep: '/' }
try {
  path = require('path')
} catch (er) {}

var GLOBSTAR = minimatch.GLOBSTAR = Minimatch.GLOBSTAR = {}
var expand = require('brace-expansion')

var plTypes = {
  '!': { open: '(?:(?!(?:', close: '))[^/]*?)'},
  '?': { open: '(?:', close: ')?' },
  '+': { open: '(?:', close: ')+' },
  '*': { open: '(?:', close: ')*' },
  '@': { open: '(?:', close: ')' }
}

// any single thing other than /
// don't need to escape / when using new RegExp()
var qmark = '[^/]'

// * => any number of characters
var star = qmark + '*?'

// ** when dots are allowed.  Anything goes, except .. and .
// not (^ or / followed by one or two dots followed by $ or /),
// followed by anything, any number of times.
var twoStarDot = '(?:(?!(?:\\\/|^)(?:\\.{1,2})($|\\\/)).)*?'

// not a ^ or / followed by a dot,
// followed by anything, any number of times.
var twoStarNoDot = '(?:(?!(?:\\\/|^)\\.).)*?'

// characters that need to be escaped in RegExp.
var reSpecials = charSet('().*{}+?[]^$\\!')

// "abc" -> { a:true, b:true, c:true }
function charSet (s) {
  return s.split('').reduce(function (set, c) {
    set[c] = true
    return set
  }, {})
}

// normalizes slashes.
var slashSplit = /\/+/

minimatch.filter = filter
function filter (pattern, options) {
  options = options || {}
  return function (p, i, list) {
    return minimatch(p, pattern, options)
  }
}

function ext (a, b) {
  a = a || {}
  b = b || {}
  var t = {}
  Object.keys(b).forEach(function (k) {
    t[k] = b[k]
  })
  Object.keys(a).forEach(function (k) {
    t[k] = a[k]
  })
  return t
}

minimatch.defaults = function (def) {
  if (!def || !Object.keys(def).length) return minimatch

var orig = minimatch

var m = function minimatch (p, pattern, options) {
    return orig.minimatch(p, pattern, ext(def, options))
  }

m.Minimatch = function Minimatch (pattern, options) {
    return new orig.Minimatch(pattern, ext(def, options))
  }

return m
}

Minimatch.defaults = function (def) {
  if (!def || !Object.keys(def).length) return Minimatch
  return minimatch.defaults(def).Minimatch
}

function minimatch (p, pattern, options) {
  if (typeof pattern !== 'string') {
    throw new TypeError('glob pattern string required')
  }

if (!options) options = {}

// shortcut: comments match nothing.
  if (!options.nocomment && pattern.charAt(0) === '#') {
    return false
  }

// "" only matches ""
  if (pattern.trim() === '') return p === ''

return new Minimatch(pattern, options).match(p)
}

function Minimatch (pattern, options) {
  if (!(this instanceof Minimatch)) {
    return new Minimatch(pattern, options)
  }

if (typeof pattern !== 'string') {
    throw new TypeError('glob pattern string required')
  }

if (!options) options = {}
  pattern = pattern.trim()

// windows support: need to use /, not \
  if (path.sep !== '/') {
    pattern = pattern.split(path.sep).join('/')
  }

this.options = options
  this.set = []
  this.pattern = pattern
  this.regexp = null
  this.negate = false
  this.comment = false
  this.empty = false

// make the set of regexps etc.
  this.make()
}

Minimatch.prototype.debug = function () {}

Minimatch.prototype.make = make
function make () {
  // don't do it more than once.
  if (this._made) return

var pattern = this.pattern
  var options = this.options

// empty patterns and comments match nothing.
  if (!options.nocomment && pattern.charAt(0) === '#') {
    this.comment = true
    return
  }
  if (!pattern) {
    this.empty = true
    return
  }

// step 1: figure out negation, etc.
  this.parseNegate()

// step 2: expand braces
  var set = this.globSet = this.braceExpand()

if (options.debug) this.debug = console.error

this.debug(this.pattern, set)

// step 3: now we have a set, so turn each one into a series of path-portion
  // matching patterns.
  // These will be regexps, except in the case of "**", which is
  // set to the GLOBSTAR object for globstar behavior,
  // and will not contain any / characters
  set = this.globParts = set.map(function (s) {
    return s.split(slashSplit)
  })

this.debug(this.pattern, set)

// glob --> regexps
  set = set.map(function (s, si, set) {
    return s.map(this.parse, this)
  }, this)

this.debug(this.pattern, set)

// filter out everything that didn't compile properly.
  set = set.filter(function (s) {
    return s.indexOf(false) === -1
  })

this.debug(this.pattern, set)

this.set = set
}

Minimatch.prototype.parseNegate = parseNegate
function parseNegate () {
  var pattern = this.pattern
  var negate = false
  var options = this.options
  var negateOffset = 0

if (options.nonegate) return

for (var i = 0, l = pattern.length
    ; i < l && pattern.charAt(i) === '!'
    ; i++) {
    negate = !negate
    negateOffset++
  }

if (negateOffset) this.pattern = pattern.substr(negateOffset)
  this.negate = negate
}

// Brace expansion:
// a{b,c}d -> abd acd
// a{b,}c -> abc ac
// a{0..3}d -> a0d a1d a2d a3d
// a{b,c{d,e}f}g -> abg acdfg acefg
// a{b,c}d{e,f}g -> abdeg acdeg abdeg abdfg
//
// Invalid sets are not expanded.
// a{2..}b -> a{2..}b
// a{b}c -> a{b}c
minimatch.braceExpand = function (pattern, options) {
  return braceExpand(pattern, options)
}

Minimatch.prototype.braceExpand = braceExpand

function braceExpand (pattern, options) {
  if (!options) {
    if (this instanceof Minimatch) {
      options = this.options
    } else {
      options = {}
    }
  }

pattern = typeof pattern === 'undefined'
    ? this.pattern : pattern

if (typeof pattern === 'undefined') {
    throw new TypeError('undefined pattern')
  }

if (options.nobrace ||
    !pattern.match(/\{.*\}/)) {
    // shortcut. no need to expand.
    return [pattern]
  }

return expand(pattern)
}

// parse a component of the expanded set.
// At this point, no pattern may contain "/" in it
// so we're going to return a 2d array, where each entry is the full
// pattern, split on '/', and then turned into a regular expression.
// A regexp is made at the end which joins each array with an
// escaped /, and another full one which joins each regexp with |.
//
// Following the lead of Bash 4.1, note that "**" only has special meaning
// when it is the *only* thing in a path portion.  Otherwise, any series
// of * is equivalent to a single *.  Globstar behavior is enabled by
// default, and can be disabled by setting options.noglobstar.
Minimatch.prototype.parse = parse
var SUBPARSE = {}
function parse (pattern, isSub) {
  if (pattern.length > 1024 * 64) {
    throw new TypeError('pattern is too long')
  }

var options = this.options

// shortcuts
  if (!options.noglobstar && pattern === '**') return GLOBSTAR
  if (pattern === '') return ''

var re = ''
  var hasMagic = !!options.nocase
  var escaping = false
  // ? => one single character
  var patternListStack = []
  var negativeLists = []
  var stateChar
  var inClass = false
  var reClassStart = -1
  var classStart = -1
  // . and .. never match anything that doesn't start with .,
  // even when options.dot is set.
  var patternStart = pattern.charAt(0) === '.' ? '' // anything
  // not (start or / followed by . or .. followed by / or end)
  : options.dot ? '(?!(?:^|\\\/)\\.{1,2}(?:$|\\\/))'
  : '(?!\\.)'
  var self = this

function clearStateChar () {
    if (stateChar) {
      // we had some state-tracking character
      // that wasn't consumed by this pass.
      switch (stateChar) {
        case '*':
          re += star
          hasMagic = true
        break
        case '?':
          re += qmark
          hasMagic = true
        break
        default:
          re += '\\' + stateChar
        break
      }
      self.debug('clearStateChar %j %j', stateChar, re)
      stateChar = false
    }
  }

for (var i = 0, len = pattern.length, c
    ; (i < len) && (c = pattern.charAt(i))
    ; i++) {
    this.debug('%s\t%s %s %j', pattern, i, re, c)

// skip over any that are escaped.
    if (escaping && reSpecials[c]) {
      re += '\\' + c
      escaping = false
      continue
    }

switch (c) {
      case '/':
        // completely not allowed, even escaped.
        // Should already be path-split by now.
        return false

case '\\':
        clearStateChar()
        escaping = true
      continue

// the various stateChar values
      // for the "extglob" stuff.
      case '?':
      case '*':
      case '+':
      case '@':
      case '!':
        this.debug('%s\t%s %s %j <-- stateChar', pattern, i, re, c)

// all of those are literals inside a class, except that
        // the glob [!a] means [^a] in regexp
        if (inClass) {
          this.debug('  in class')
          if (c === '!' && i === classStart + 1) c = '^'
          re += c
          continue
        }

// if we already have a stateChar, then it means
        // that there was something like ** or +? in there.
        // Handle the stateChar, then proceed with this one.
        self.debug('call clearStateChar %j', stateChar)
        clearStateChar()
        stateChar = c
        // if extglob is disabled, then +(asdf|foo) isn't a thing.
        // just clear the statechar *now*, rather than even diving into
        // the patternList stuff.
        if (options.noext) clearStateChar()
      continue

case '(':
        if (inClass) {
          re += '('
          continue
        }

if (!stateChar) {
          re += '\\('
          continue
        }

patternListStack.push({
          type: stateChar,
          start: i - 1,
          reStart: re.length,
          open: plTypes[stateChar].open,
          close: plTypes[stateChar].close
        })
        // negation is (?:(?!js)[^/]*)
        re += stateChar === '!' ? '(?:(?!(?:' : '(?:'
        this.debug('plType %j %j', stateChar, re)
        stateChar = false
      continue

case ')':
        if (inClass || !patternListStack.length) {
          re += '\\)'
          continue
        }

clearStateChar()
        hasMagic = true
        var pl = patternListStack.pop()
        // negation is (?:(?!js)[^/]*)
        // The others are (?:<pattern>)<type>
        re += pl.close
        if (pl.type === '!') {
          negativeLists.push(pl)
        }
        pl.reEnd = re.length
      continue

case '|':
        if (inClass || !patternListStack.length || escaping) {
          re += '\\|'
          escaping = false
          continue
        }

clearStateChar()
        re += '|'
      continue

// these are mostly the same in regexp and glob
      case '[':
        // swallow any state-tracking char before the [
        clearStateChar()

if (inClass) {
          re += '\\' + c
          continue
        }

inClass = true
        classStart = i
        reClassStart = re.length
        re += c
      continue

case ']':
        //  a right bracket shall lose its special
        //  meaning and represent itself in
        //  a bracket expression if it occurs
        //  first in the list.  -- POSIX.2 2.8.3.2
        if (i === classStart + 1 || !inClass) {
          re += '\\' + c
          escaping = false
          continue
        }

// handle the case where we left a class open.
        // "[z-a]" is valid, equivalent to "\[z-a\]"
        if (inClass) {
          // split where the last [ was, make sure we don't have
          // an invalid re. if so, re-walk the contents of the
          // would-be class to re-translate any characters that
          // were passed through as-is
          // TODO: It would probably be faster to determine this
          // without a try/catch and a new RegExp, but it's tricky
          // to do safely.  For now, this is safe and works.
          var cs = pattern.substring(classStart + 1, i)
          try {
            RegExp('[' + cs + ']')
          } catch (er) {
            // not a valid class!
            var sp = this.parse(cs, SUBPARSE)
            re = re.substr(0, reClassStart) + '\\[' + sp[0] + '\\]'
            hasMagic = hasMagic || sp[1]
            inClass = false
            continue
          }
        }

// finish up the class.
        hasMagic = true
        inClass = false
        re += c
      continue

default:
        // swallow any state char that wasn't consumed
        clearStateChar()

if (escaping) {
          // no need
          escaping = false
        } else if (reSpecials[c]
          && !(c === '^' && inClass)) {
          re += '\\'
        }

re += c

} // switch
  } // for

// handle the case where we left a class open.
  // "[abc" is valid, equivalent to "\[abc"
  if (inClass) {
    // split where the last [ was, and escape it
    // this is a huge pita.  We now have to re-walk
    // the contents of the would-be class to re-translate
    // any characters that were passed through as-is
    cs = pattern.substr(classStart + 1)
    sp = this.parse(cs, SUBPARSE)
    re = re.substr(0, reClassStart) + '\\[' + sp[0]
    hasMagic = hasMagic || sp[1]
  }

// handle the case where we had a +( thing at the *end*
  // of the pattern.
  // each pattern list stack adds 3 chars, and we need to go through
  // and escape any | chars that were passed through as-is for the regexp.
  // Go through and escape them, taking care not to double-escape any
  // | chars that were already escaped.
  for (pl = patternListStack.pop(); pl; pl = patternListStack.pop()) {
    var tail = re.slice(pl.reStart + pl.open.length)
    this.debug('setting tail', re, pl)
    // maybe some even number of \, then maybe 1 \, followed by a |
    tail = tail.replace(/((?:\\{2}){0,64})(\\?)\|/g, function (_, $1, $2) {
      if (!$2) {
        // the | isn't already escaped, so escape it.
        $2 = '\\'
      }

// need to escape all those slashes *again*, without escaping the
      // one that we need for escaping the | character.  As it works out,
      // escaping an even number of slashes can be done by simply repeating
      // it exactly after itself.  That's why this trick works.
      //
      // I am sorry that you have to see this.
      return $1 + $1 + $2 + '|'
    })

this.debug('tail=%j\n   %s', tail, tail, pl, re)
    var t = pl.type === '*' ? star
      : pl.type === '?' ? qmark
      : '\\' + pl.type

hasMagic = true
    re = re.slice(0, pl.reStart) + t + '\\(' + tail
  }

// handle trailing things that only matter at the very end.
  clearStateChar()
  if (escaping) {
    // trailing \\
    re += '\\\\'
  }

// only need to apply the nodot start if the re starts with
  // something that could conceivably capture a dot
  var addPatternStart = false
  switch (re.charAt(0)) {
    case '.':
    case '[':
    case '(': addPatternStart = true
  }

// Hack to work around lack of negative lookbehind in JS
  // A pattern like: *.!(x).!(y|z) needs to ensure that a name
  // like 'a.xyz.yz' doesn't match.  So, the first negative
  // lookahead, has to look ALL the way ahead, to the end of
  // the pattern.
  for (var n = negativeLists.length - 1; n > -1; n--) {
    var nl = negativeLists[n]

var nlBefore = re.slice(0, nl.reStart)
    var nlFirst = re.slice(nl.reStart, nl.reEnd - 8)
    var nlLast = re.slice(nl.reEnd - 8, nl.reEnd)
    var nlAfter = re.slice(nl.reEnd)

nlLast += nlAfter

// Handle nested stuff like *(*.js|!(*.json)), where open parens
    // mean that we should *not* include the ) in the bit that is considered
    // "after" the negated section.
    var openParensBefore = nlBefore.split('(').length - 1
    var cleanAfter = nlAfter
    for (i = 0; i < openParensBefore; i++) {
      cleanAfter = cleanAfter.replace(/\)[+*?]?/, '')
    }
    nlAfter = cleanAfter

var dollar = ''
    if (nlAfter === '' && isSub !== SUBPARSE) {
      dollar = '$'
    }
    var newRe = nlBefore + nlFirst + nlAfter + dollar + nlLast
    re = newRe
  }

// if the re is not "" at this point, then we need to make sure
  // it doesn't match against an empty path part.
  // Otherwise a/* will match a/, which it should not.
  if (re !== '' && hasMagic) {
    re = '(?=.)' + re
  }

if (addPatternStart) {
    re = patternStart + re
  }

// parsing just a piece of a larger pattern.
  if (isSub === SUBPARSE) {
    return [re, hasMagic]
  }

// skip the regexp for non-magical patterns
  // unescape anything in it, though, so that it'll be
  // an exact match against a file etc.
  if (!hasMagic) {
    return globUnescape(pattern)
  }

var flags = options.nocase ? 'i' : ''
  try {
    var regExp = new RegExp('^' + re + '$', flags)
  } catch (er) {
    // If it was an invalid regular expression, then it can't match
    // anything.  This trick looks for a character after the end of
    // the string, which is of course impossible, except in multi-line
    // mode, but it's not a /m regex.
    return new RegExp('$.')
  }

regExp._glob = pattern
  regExp._src = re

return regExp
}

minimatch.makeRe = function (pattern, options) {
  return new Minimatch(pattern, options || {}).makeRe()
}

Minimatch.prototype.makeRe = makeRe
function makeRe () {
  if (this.regexp || this.regexp === false) return this.regexp

// at this point, this.set is a 2d array of partial
  // pattern strings, or "**".
  //
  // It's better to use .match().  This function shouldn't
  // be used, really, but it's pretty convenient sometimes,
  // when you just want to work with a regex.
  var set = this.set

if (!set.length) {
    this.regexp = false
    return this.regexp
  }
  var options = this.options

var twoStar = options.noglobstar ? star
    : options.dot ? twoStarDot
    : twoStarNoDot
  var flags = options.nocase ? 'i' : ''

var re = set.map(function (pattern) {
    return pattern.map(function (p) {
      return (p === GLOBSTAR) ? twoStar
      : (typeof p === 'string') ? regExpEscape(p)
      : p._src
    }).join('\\\/')
  }).join('|')

// must match entire pattern
  // ending in a * or ** will make it less strict.
  re = '^(?:' + re + ')$'

// can match anything, as long as it's not this.
  if (this.negate) re = '^(?!' + re + ').*$'

try {
    this.regexp = new RegExp(re, flags)
  } catch (ex) {
    this.regexp = false
  }
  return this.regexp
}

minimatch.match = function (list, pattern, options) {
  options = options || {}
  var mm = new Minimatch(pattern, options)
  list = list.filter(function (f) {
    return mm.match(f)
  })
  if (mm.options.nonull && !list.length) {
    list.push(pattern)
  }
  return list
}

Minimatch.prototype.match = match
function match (f, partial) {
  this.debug('match', f, this.pattern)
  // short-circuit in the case of busted things.
  // comments, etc.
  if (this.comment) return false
  if (this.empty) return f === ''

if (f === '/' && partial) return true

var options = this.options

// windows: need to use /, not \
  if (path.sep !== '/') {
    f = f.split(path.sep).join('/')
  }

// treat the test path as a set of pathparts.
  f = f.split(slashSplit)
  this.debug(this.pattern, 'split', f)

// just ONE of the pattern sets in this.set needs to match
  // in order for it to be valid.  If negating, then just one
  // match means that we have failed.
  // Either way, return on the first hit.

var set = this.set
  this.debug(this.pattern, 'set', set)

// Find the basename of the path by looking for the last non-empty segment
  var filename
  var i
  for (i = f.length - 1; i >= 0; i--) {
    filename = f[i]
    if (filename) break
  }

for (i = 0; i < set.length; i++) {
    var pattern = set[i]
    var file = f
    if (options.matchBase && pattern.length === 1) {
      file = [filename]
    }
    var hit = this.matchOne(file, pattern, partial)
    if (hit) {
      if (options.flipNegate) return true
      return !this.negate
    }
  }

// didn't get any hits.  this is success if it's a negative
  // pattern, failure otherwise.
  if (options.flipNegate) return false
  return this.negate
}

// set partial to true to test if, for example,
// "/a/b" matches the start of "/*/b/*/d"
// Partial means, if you run out of file before you run
// out of pattern, then that's fine, as long as all
// the parts match.
Minimatch.prototype.matchOne = function (file, pattern, partial) {
  var options = this.options

this.debug('matchOne',
    { 'this': this, file: file, pattern: pattern })

this.debug('matchOne', file.length, pattern.length)

for (var fi = 0,
      pi = 0,
      fl = file.length,
      pl = pattern.length
      ; (fi < fl) && (pi < pl)
      ; fi++, pi++) {
    this.debug('matchOne loop')
    var p = pattern[pi]
    var f = file[fi]

this.debug(pattern, p, f)

// should be impossible.
    // some invalid regexp stuff in the set.
    if (p === false) return false

if (p === GLOBSTAR) {
      this.debug('GLOBSTAR', [pattern, p, f])

// "**"
      // a/**/b/**/c would match the following:
      // a/b/x/y/z/c
      // a/x/y/z/b/c
      // a/b/x/b/x/c
      // a/b/c
      // To do this, take the rest of the pattern after
      // the **, and see if it would match the file remainder.
      // If so, return success.
      // If not, the ** "swallows" a segment, and try again.
      // This is recursively awful.
      //
      // a/**/b/**/c matching a/b/x/y/z/c
      // - a matches a
      // - doublestar
      //   - matchOne(b/x/y/z/c, b/**/c)
      //     - b matches b
      //     - doublestar
      //       - matchOne(x/y/z/c, c) -> no
      //       - matchOne(y/z/c, c) -> no
      //       - matchOne(z/c, c) -> no
      //       - matchOne(c, c) yes, hit
      var fr = fi
      var pr = pi + 1
      if (pr === pl) {
        this.debug('** at the end')
        // a ** at the end will just swallow the rest.
        // We have found a match.
        // however, it will not swallow /.x, unless
        // options.dot is set.
        // . and .. are *never* matched by **, for explosively
        // exponential reasons.
        for (; fi < fl; fi++) {
          if (file[fi] === '.' || file[fi] === '..' ||
            (!options.dot && file[fi].charAt(0) === '.')) return false
        }
        return true
      }

// ok, let's see if we can swallow whatever we can.
      while (fr < fl) {
        var swallowee = file[fr]

this.debug('\nglobstar while', file, fr, pattern, pr, swallowee)

// XXX remove this slice.  Just pass the start index.
        if (this.matchOne(file.slice(fr), pattern.slice(pr), partial)) {
          this.debug('globstar found match!', fr, fl, swallowee)
          // found a match.
          return true
        } else {
          // can't swallow "." or ".." ever.
          // can only swallow ".foo" when explicitly asked.
          if (swallowee === '.' || swallowee === '..' ||
            (!options.dot && swallowee.charAt(0) === '.')) {
            this.debug('dot detected!', file, fr, pattern, pr)
            break
          }

// ** swallows a segment, and continue.
          this.debug('globstar swallow a segment, and continue')
          fr++
        }
      }

// no match was found.
      // However, in partial mode, we can't say this is necessarily over.
      // If there's more *pattern* left, then
      if (partial) {
        // ran out of file
        this.debug('\n>>> no match, partial?', file, fr, pattern, pr)
        if (fr === fl) return true
      }
      return false
    }

// something other than **
    // non-magic patterns just have to match exactly
    // patterns with magic have been turned into regexps.
    var hit
    if (typeof p === 'string') {
      if (options.nocase) {
        hit = f.toLowerCase() === p.toLowerCase()
      } else {
        hit = f === p
      }
      this.debug('string match', p, f, hit)
    } else {
      hit = f.match(p)
      this.debug('pattern match', p, f, hit)
    }

if (!hit) return false
  }

// Note: ending in / means that we'll get a final ""
  // at the end of the pattern.  This can only match a
  // corresponding "" at the end of the file.
  // If the file ends in /, then it can only match a
  // a pattern that ends in /, unless the pattern just
  // doesn't have any more for it. But, a/b/ should *not*
  // match "a/b/*", even though "" matches against the
  // [^/]*? pattern, except in partial mode, where it might
  // simply not be reached yet.
  // However, a/b/ should still satisfy a/*

// now either we fell off the end of the pattern, or we're done.
  if (fi === fl && pi === pl) {
    // ran out of pattern and filename at the same time.
    // an exact hit!
    return true
  } else if (fi === fl) {
    // ran out of file, but still had pattern left.
    // this is ok if we're doing the match as part of
    // a glob fs traversal.
    return partial
  } else if (pi === pl) {
    // ran out of pattern, still have file left.
    // this is only acceptable if we're on the very last
    // empty segment of a file with a trailing slash.
    // a/* should match a/b/
    var emptyFileEnd = (fi === fl - 1) && (file[fi] === '')
    return emptyFileEnd
  }

// should be unreachable.
  throw new Error('wtf?')
}

// replace stuff like \* with *
function globUnescape (s) {
  return s.replace(/\\(.)/g, '$1')
}

function regExpEscape (s) {
  return s.replace(/[-[\]{}()*+?.,\\^$|#\s]/g, '\\$&')
}

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