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    1 // Approach:
    2 //
    3 // 1. Get the minimatch set
    4 // 2. For each pattern in the set, PROCESS(pattern, false)
    5 // 3. Store matches per-set, then uniq them
    6 //
    7 // PROCESS(pattern, inGlobStar)
    8 // Get the first [n] items from pattern that are all strings
    9 // Join these together.  This is PREFIX.
   10 //   If there is no more remaining, then stat(PREFIX) and
   11 //   add to matches if it succeeds.  END.
   12 //
   13 // If inGlobStar and PREFIX is symlink and points to dir
   14 //   set ENTRIES = []
   15 // else readdir(PREFIX) as ENTRIES
   16 //   If fail, END
   17 //
   18 // with ENTRIES
   19 //   If pattern[n] is GLOBSTAR
   20 //     // handle the case where the globstar match is empty
   21 //     // by pruning it out, and testing the resulting pattern
   22 //     PROCESS(pattern[0..n] + pattern[n+1 .. $], false)
   23 //     // handle other cases.
   24 //     for ENTRY in ENTRIES (not dotfiles)
   25 //       // attach globstar + tail onto the entry
   26 //       // Mark that this entry is a globstar match
   27 //       PROCESS(pattern[0..n] + ENTRY + pattern[n .. $], true)
   28 //
   29 //   else // not globstar
   30 //     for ENTRY in ENTRIES (not dotfiles, unless pattern[n] is dot)
   31 //       Test ENTRY against pattern[n]
   32 //       If fails, continue
   33 //       If passes, PROCESS(pattern[0..n] + item + pattern[n+1 .. $])
   34 //
   35 // Caveat:
   36 //   Cache all stats and readdirs results to minimize syscall.  Since all
   37 //   we ever care about is existence and directory-ness, we can just keep
   38 //   `true` for files, and [children,...] for directories, or `false` for
   39 //   things that don't exist.
   40 
   41 module.exports = glob
   42 
   43 var fs = require('fs')
   44 var rp = require('fs.realpath')
   45 var minimatch = require('minimatch')
   46 var Minimatch = minimatch.Minimatch
   47 var inherits = require('inherits')
   48 var EE = require('events').EventEmitter
   49 var path = require('path')
   50 var assert = require('assert')
   51 var isAbsolute = require('path-is-absolute')
   52 var globSync = require('./sync.js')
   53 var common = require('./common.js')
   54 var alphasort = common.alphasort
   55 var alphasorti = common.alphasorti
   56 var setopts = common.setopts
   57 var ownProp = common.ownProp
   58 var inflight = require('inflight')
   59 var util = require('util')
   60 var childrenIgnored = common.childrenIgnored
   61 var isIgnored = common.isIgnored
   62 
   63 var once = require('once')
   64 
   65 function glob (pattern, options, cb) {
   66   if (typeof options === 'function') cb = options, options = {}
   67   if (!options) options = {}
   68 
   69   if (options.sync) {
   70     if (cb)
   71       throw new TypeError('callback provided to sync glob')
   72     return globSync(pattern, options)
   73   }
   74 
   75   return new Glob(pattern, options, cb)
   76 }
   77 
   78 glob.sync = globSync
   79 var GlobSync = glob.GlobSync = globSync.GlobSync
   80 
   81 // old api surface
   82 glob.glob = glob
   83 
   84 function extend (origin, add) {
   85   if (add === null || typeof add !== 'object') {
   86     return origin
   87   }
   88 
   89   var keys = Object.keys(add)
   90   var i = keys.length
   91   while (i--) {
   92     origin[keys[i]] = add[keys[i]]
   93   }
   94   return origin
   95 }
   96 
   97 glob.hasMagic = function (pattern, options_) {
   98   var options = extend({}, options_)
   99   options.noprocess = true
  100 
  101   var g = new Glob(pattern, options)
  102   var set = g.minimatch.set
  103   if (set.length > 1)
  104     return true
  105 
  106   for (var j = 0; j < set[0].length; j++) {
  107     if (typeof set[0][j] !== 'string')
  108       return true
  109   }
  110 
  111   return false
  112 }
  113 
  114 glob.Glob = Glob
  115 inherits(Glob, EE)
  116 function Glob (pattern, options, cb) {
  117   if (typeof options === 'function') {
  118     cb = options
  119     options = null
  120   }
  121 
  122   if (options && options.sync) {
  123     if (cb)
  124       throw new TypeError('callback provided to sync glob')
  125     return new GlobSync(pattern, options)
  126   }
  127 
  128   if (!(this instanceof Glob))
  129     return new Glob(pattern, options, cb)
  130 
  131   setopts(this, pattern, options)
  132   this._didRealPath = false
  133 
  134   // process each pattern in the minimatch set
  135   var n = this.minimatch.set.length
  136 
  137   // The matches are stored as {<filename>: true,...} so that
  138   // duplicates are automagically pruned.
  139   // Later, we do an Object.keys() on these.
  140   // Keep them as a list so we can fill in when nonull is set.
  141   this.matches = new Array(n)
  142 
  143   if (typeof cb === 'function') {
  144     cb = once(cb)
  145     this.on('error', cb)
  146     this.on('end', function (matches) {
  147       cb(null, matches)
  148     })
  149   }
  150 
  151   var self = this
  152   var n = this.minimatch.set.length
  153   this._processing = 0
  154   this.matches = new Array(n)
  155 
  156   this._emitQueue = []
  157   this._processQueue = []
  158   this.paused = false
  159 
  160   if (this.noprocess)
  161     return this
  162 
  163   if (n === 0)
  164     return done()
  165 
  166   var sync = true
  167   for (var i = 0; i < n; i ++) {
  168     this._process(this.minimatch.set[i], i, false, done)
  169   }
  170   sync = false
  171 
  172   function done () {
  173     --self._processing
  174     if (self._processing <= 0) {
  175       if (sync) {
  176         process.nextTick(function () {
  177           self._finish()
  178         })
  179       } else {
  180         self._finish()
  181       }
  182     }
  183   }
  184 }
  185 
  186 Glob.prototype._finish = function () {
  187   assert(this instanceof Glob)
  188   if (this.aborted)
  189     return
  190 
  191   if (this.realpath && !this._didRealpath)
  192     return this._realpath()
  193 
  194   common.finish(this)
  195   this.emit('end', this.found)
  196 }
  197 
  198 Glob.prototype._realpath = function () {
  199   if (this._didRealpath)
  200     return
  201 
  202   this._didRealpath = true
  203 
  204   var n = this.matches.length
  205   if (n === 0)
  206     return this._finish()
  207 
  208   var self = this
  209   for (var i = 0; i < this.matches.length; i++)
  210     this._realpathSet(i, next)
  211 
  212   function next () {
  213     if (--n === 0)
  214       self._finish()
  215   }
  216 }
  217 
  218 Glob.prototype._realpathSet = function (index, cb) {
  219   var matchset = this.matches[index]
  220   if (!matchset)
  221     return cb()
  222 
  223   var found = Object.keys(matchset)
  224   var self = this
  225   var n = found.length
  226 
  227   if (n === 0)
  228     return cb()
  229 
  230   var set = this.matches[index] = Object.create(null)
  231   found.forEach(function (p, i) {
  232     // If there's a problem with the stat, then it means that
  233     // one or more of the links in the realpath couldn't be
  234     // resolved.  just return the abs value in that case.
  235     p = self._makeAbs(p)
  236     rp.realpath(p, self.realpathCache, function (er, real) {
  237       if (!er)
  238         set[real] = true
  239       else if (er.syscall === 'stat')
  240         set[p] = true
  241       else
  242         self.emit('error', er) // srsly wtf right here
  243 
  244       if (--n === 0) {
  245         self.matches[index] = set
  246         cb()
  247       }
  248     })
  249   })
  250 }
  251 
  252 Glob.prototype._mark = function (p) {
  253   return common.mark(this, p)
  254 }
  255 
  256 Glob.prototype._makeAbs = function (f) {
  257   return common.makeAbs(this, f)
  258 }
  259 
  260 Glob.prototype.abort = function () {
  261   this.aborted = true
  262   this.emit('abort')
  263 }
  264 
  265 Glob.prototype.pause = function () {
  266   if (!this.paused) {
  267     this.paused = true
  268     this.emit('pause')
  269   }
  270 }
  271 
  272 Glob.prototype.resume = function () {
  273   if (this.paused) {
  274     this.emit('resume')
  275     this.paused = false
  276     if (this._emitQueue.length) {
  277       var eq = this._emitQueue.slice(0)
  278       this._emitQueue.length = 0
  279       for (var i = 0; i < eq.length; i ++) {
  280         var e = eq[i]
  281         this._emitMatch(e[0], e[1])
  282       }
  283     }
  284     if (this._processQueue.length) {
  285       var pq = this._processQueue.slice(0)
  286       this._processQueue.length = 0
  287       for (var i = 0; i < pq.length; i ++) {
  288         var p = pq[i]
  289         this._processing--
  290         this._process(p[0], p[1], p[2], p[3])
  291       }
  292     }
  293   }
  294 }
  295 
  296 Glob.prototype._process = function (pattern, index, inGlobStar, cb) {
  297   assert(this instanceof Glob)
  298   assert(typeof cb === 'function')
  299 
  300   if (this.aborted)
  301     return
  302 
  303   this._processing++
  304   if (this.paused) {
  305     this._processQueue.push([pattern, index, inGlobStar, cb])
  306     return
  307   }
  308 
  309   //console.error('PROCESS %d', this._processing, pattern)
  310 
  311   // Get the first [n] parts of pattern that are all strings.
  312   var n = 0
  313   while (typeof pattern[n] === 'string') {
  314     n ++
  315   }
  316   // now n is the index of the first one that is *not* a string.
  317 
  318   // see if there's anything else
  319   var prefix
  320   switch (n) {
  321     // if not, then this is rather simple
  322     case pattern.length:
  323       this._processSimple(pattern.join('/'), index, cb)
  324       return
  325 
  326     case 0:
  327       // pattern *starts* with some non-trivial item.
  328       // going to readdir(cwd), but not include the prefix in matches.
  329       prefix = null
  330       break
  331 
  332     default:
  333       // pattern has some string bits in the front.
  334       // whatever it starts with, whether that's 'absolute' like /foo/bar,
  335       // or 'relative' like '../baz'
  336       prefix = pattern.slice(0, n).join('/')
  337       break
  338   }
  339 
  340   var remain = pattern.slice(n)
  341 
  342   // get the list of entries.
  343   var read
  344   if (prefix === null)
  345     read = '.'
  346   else if (isAbsolute(prefix) || isAbsolute(pattern.join('/'))) {
  347     if (!prefix || !isAbsolute(prefix))
  348       prefix = '/' + prefix
  349     read = prefix
  350   } else
  351     read = prefix
  352 
  353   var abs = this._makeAbs(read)
  354 
  355   //if ignored, skip _processing
  356   if (childrenIgnored(this, read))
  357     return cb()
  358 
  359   var isGlobStar = remain[0] === minimatch.GLOBSTAR
  360   if (isGlobStar)
  361     this._processGlobStar(prefix, read, abs, remain, index, inGlobStar, cb)
  362   else
  363     this._processReaddir(prefix, read, abs, remain, index, inGlobStar, cb)
  364 }
  365 
  366 Glob.prototype._processReaddir = function (prefix, read, abs, remain, index, inGlobStar, cb) {
  367   var self = this
  368   this._readdir(abs, inGlobStar, function (er, entries) {
  369     return self._processReaddir2(prefix, read, abs, remain, index, inGlobStar, entries, cb)
  370   })
  371 }
  372 
  373 Glob.prototype._processReaddir2 = function (prefix, read, abs, remain, index, inGlobStar, entries, cb) {
  374 
  375   // if the abs isn't a dir, then nothing can match!
  376   if (!entries)
  377     return cb()
  378 
  379   // It will only match dot entries if it starts with a dot, or if
  380   // dot is set.  Stuff like @(.foo|.bar) isn't allowed.
  381   var pn = remain[0]
  382   var negate = !!this.minimatch.negate
  383   var rawGlob = pn._glob
  384   var dotOk = this.dot || rawGlob.charAt(0) === '.'
  385 
  386   var matchedEntries = []
  387   for (var i = 0; i < entries.length; i++) {
  388     var e = entries[i]
  389     if (e.charAt(0) !== '.' || dotOk) {
  390       var m
  391       if (negate && !prefix) {
  392         m = !e.match(pn)
  393       } else {
  394         m = e.match(pn)
  395       }
  396       if (m)
  397         matchedEntries.push(e)
  398     }
  399   }
  400 
  401   //console.error('prd2', prefix, entries, remain[0]._glob, matchedEntries)
  402 
  403   var len = matchedEntries.length
  404   // If there are no matched entries, then nothing matches.
  405   if (len === 0)
  406     return cb()
  407 
  408   // if this is the last remaining pattern bit, then no need for
  409   // an additional stat *unless* the user has specified mark or
  410   // stat explicitly.  We know they exist, since readdir returned
  411   // them.
  412 
  413   if (remain.length === 1 && !this.mark && !this.stat) {
  414     if (!this.matches[index])
  415       this.matches[index] = Object.create(null)
  416 
  417     for (var i = 0; i < len; i ++) {
  418       var e = matchedEntries[i]
  419       if (prefix) {
  420         if (prefix !== '/')
  421           e = prefix + '/' + e
  422         else
  423           e = prefix + e
  424       }
  425 
  426       if (e.charAt(0) === '/' && !this.nomount) {
  427         e = path.join(this.root, e)
  428       }
  429       this._emitMatch(index, e)
  430     }
  431     // This was the last one, and no stats were needed
  432     return cb()
  433   }
  434 
  435   // now test all matched entries as stand-ins for that part
  436   // of the pattern.
  437   remain.shift()
  438   for (var i = 0; i < len; i ++) {
  439     var e = matchedEntries[i]
  440     var newPattern
  441     if (prefix) {
  442       if (prefix !== '/')
  443         e = prefix + '/' + e
  444       else
  445         e = prefix + e
  446     }
  447     this._process([e].concat(remain), index, inGlobStar, cb)
  448   }
  449   cb()
  450 }
  451 
  452 Glob.prototype._emitMatch = function (index, e) {
  453   if (this.aborted)
  454     return
  455 
  456   if (this.matches[index][e])
  457     return
  458 
  459   if (isIgnored(this, e))
  460     return
  461 
  462   if (this.paused) {
  463     this._emitQueue.push([index, e])
  464     return
  465   }
  466 
  467   var abs = this._makeAbs(e)
  468 
  469   if (this.nodir) {
  470     var c = this.cache[abs]
  471     if (c === 'DIR' || Array.isArray(c))
  472       return
  473   }
  474 
  475   if (this.mark)
  476     e = this._mark(e)
  477 
  478   this.matches[index][e] = true
  479 
  480   var st = this.statCache[abs]
  481   if (st)
  482     this.emit('stat', e, st)
  483 
  484   this.emit('match', e)
  485 }
  486 
  487 Glob.prototype._readdirInGlobStar = function (abs, cb) {
  488   if (this.aborted)
  489     return
  490 
  491   // follow all symlinked directories forever
  492   // just proceed as if this is a non-globstar situation
  493   if (this.follow)
  494     return this._readdir(abs, false, cb)
  495 
  496   var lstatkey = 'lstat\0' + abs
  497   var self = this
  498   var lstatcb = inflight(lstatkey, lstatcb_)
  499 
  500   if (lstatcb)
  501     fs.lstat(abs, lstatcb)
  502 
  503   function lstatcb_ (er, lstat) {
  504     if (er)
  505       return cb()
  506 
  507     var isSym = lstat.isSymbolicLink()
  508     self.symlinks[abs] = isSym
  509 
  510     // If it's not a symlink or a dir, then it's definitely a regular file.
  511     // don't bother doing a readdir in that case.
  512     if (!isSym && !lstat.isDirectory()) {
  513       self.cache[abs] = 'FILE'
  514       cb()
  515     } else
  516       self._readdir(abs, false, cb)
  517   }
  518 }
  519 
  520 Glob.prototype._readdir = function (abs, inGlobStar, cb) {
  521   if (this.aborted)
  522     return
  523 
  524   cb = inflight('readdir\0'+abs+'\0'+inGlobStar, cb)
  525   if (!cb)
  526     return
  527 
  528   //console.error('RD %j %j', +inGlobStar, abs)
  529   if (inGlobStar && !ownProp(this.symlinks, abs))
  530     return this._readdirInGlobStar(abs, cb)
  531 
  532   if (ownProp(this.cache, abs)) {
  533     var c = this.cache[abs]
  534     if (!c || c === 'FILE')
  535       return cb()
  536 
  537     if (Array.isArray(c))
  538       return cb(null, c)
  539   }
  540 
  541   var self = this
  542   fs.readdir(abs, readdirCb(this, abs, cb))
  543 }
  544 
  545 function readdirCb (self, abs, cb) {
  546   return function (er, entries) {
  547     if (er)
  548       self._readdirError(abs, er, cb)
  549     else
  550       self._readdirEntries(abs, entries, cb)
  551   }
  552 }
  553 
  554 Glob.prototype._readdirEntries = function (abs, entries, cb) {
  555   if (this.aborted)
  556     return
  557 
  558   // if we haven't asked to stat everything, then just
  559   // assume that everything in there exists, so we can avoid
  560   // having to stat it a second time.
  561   if (!this.mark && !this.stat) {
  562     for (var i = 0; i < entries.length; i ++) {
  563       var e = entries[i]
  564       if (abs === '/')
  565         e = abs + e
  566       else
  567         e = abs + '/' + e
  568       this.cache[e] = true
  569     }
  570   }
  571 
  572   this.cache[abs] = entries
  573   return cb(null, entries)
  574 }
  575 
  576 Glob.prototype._readdirError = function (f, er, cb) {
  577   if (this.aborted)
  578     return
  579 
  580   // handle errors, and cache the information
  581   switch (er.code) {
  582     case 'ENOTSUP': // https://github.com/isaacs/node-glob/issues/205
  583     case 'ENOTDIR': // totally normal. means it *does* exist.
  584       var abs = this._makeAbs(f)
  585       this.cache[abs] = 'FILE'
  586       if (abs === this.cwdAbs) {
  587         var error = new Error(er.code + ' invalid cwd ' + this.cwd)
  588         error.path = this.cwd
  589         error.code = er.code
  590         this.emit('error', error)
  591         this.abort()
  592       }
  593       break
  594 
  595     case 'ENOENT': // not terribly unusual
  596     case 'ELOOP':
  597     case 'ENAMETOOLONG':
  598     case 'UNKNOWN':
  599       this.cache[this._makeAbs(f)] = false
  600       break
  601 
  602     default: // some unusual error.  Treat as failure.
  603       this.cache[this._makeAbs(f)] = false
  604       if (this.strict) {
  605         this.emit('error', er)
  606         // If the error is handled, then we abort
  607         // if not, we threw out of here
  608         this.abort()
  609       }
  610       if (!this.silent)
  611         console.error('glob error', er)
  612       break
  613   }
  614 
  615   return cb()
  616 }
  617 
  618 Glob.prototype._processGlobStar = function (prefix, read, abs, remain, index, inGlobStar, cb) {
  619   var self = this
  620   this._readdir(abs, inGlobStar, function (er, entries) {
  621     self._processGlobStar2(prefix, read, abs, remain, index, inGlobStar, entries, cb)
  622   })
  623 }
  624 
  625 
  626 Glob.prototype._processGlobStar2 = function (prefix, read, abs, remain, index, inGlobStar, entries, cb) {
  627   //console.error('pgs2', prefix, remain[0], entries)
  628 
  629   // no entries means not a dir, so it can never have matches
  630   // foo.txt/** doesn't match foo.txt
  631   if (!entries)
  632     return cb()
  633 
  634   // test without the globstar, and with every child both below
  635   // and replacing the globstar.
  636   var remainWithoutGlobStar = remain.slice(1)
  637   var gspref = prefix ? [ prefix ] : []
  638   var noGlobStar = gspref.concat(remainWithoutGlobStar)
  639 
  640   // the noGlobStar pattern exits the inGlobStar state
  641   this._process(noGlobStar, index, false, cb)
  642 
  643   var isSym = this.symlinks[abs]
  644   var len = entries.length
  645 
  646   // If it's a symlink, and we're in a globstar, then stop
  647   if (isSym && inGlobStar)
  648     return cb()
  649 
  650   for (var i = 0; i < len; i++) {
  651     var e = entries[i]
  652     if (e.charAt(0) === '.' && !this.dot)
  653       continue
  654 
  655     // these two cases enter the inGlobStar state
  656     var instead = gspref.concat(entries[i], remainWithoutGlobStar)
  657     this._process(instead, index, true, cb)
  658 
  659     var below = gspref.concat(entries[i], remain)
  660     this._process(below, index, true, cb)
  661   }
  662 
  663   cb()
  664 }
  665 
  666 Glob.prototype._processSimple = function (prefix, index, cb) {
  667   // XXX review this.  Shouldn't it be doing the mounting etc
  668   // before doing stat?  kinda weird?
  669   var self = this
  670   this._stat(prefix, function (er, exists) {
  671     self._processSimple2(prefix, index, er, exists, cb)
  672   })
  673 }
  674 Glob.prototype._processSimple2 = function (prefix, index, er, exists, cb) {
  675 
  676   //console.error('ps2', prefix, exists)
  677 
  678   if (!this.matches[index])
  679     this.matches[index] = Object.create(null)
  680 
  681   // If it doesn't exist, then just mark the lack of results
  682   if (!exists)
  683     return cb()
  684 
  685   if (prefix && isAbsolute(prefix) && !this.nomount) {
  686     var trail = /[\/\\]$/.test(prefix)
  687     if (prefix.charAt(0) === '/') {
  688       prefix = path.join(this.root, prefix)
  689     } else {
  690       prefix = path.resolve(this.root, prefix)
  691       if (trail)
  692         prefix += '/'
  693     }
  694   }
  695 
  696   if (process.platform === 'win32')
  697     prefix = prefix.replace(/\\/g, '/')
  698 
  699   // Mark this as a match
  700   this._emitMatch(index, prefix)
  701   cb()
  702 }
  703 
  704 // Returns either 'DIR', 'FILE', or false
  705 Glob.prototype._stat = function (f, cb) {
  706   var abs = this._makeAbs(f)
  707   var needDir = f.slice(-1) === '/'
  708 
  709   if (f.length > this.maxLength)
  710     return cb()
  711 
  712   if (!this.stat && ownProp(this.cache, abs)) {
  713     var c = this.cache[abs]
  714 
  715     if (Array.isArray(c))
  716       c = 'DIR'
  717 
  718     // It exists, but maybe not how we need it
  719     if (!needDir || c === 'DIR')
  720       return cb(null, c)
  721 
  722     if (needDir && c === 'FILE')
  723       return cb()
  724 
  725     // otherwise we have to stat, because maybe c=true
  726     // if we know it exists, but not what it is.
  727   }
  728 
  729   var exists
  730   var stat = this.statCache[abs]
  731   if (stat !== undefined) {
  732     if (stat === false)
  733       return cb(null, stat)
  734     else {
  735       var type = stat.isDirectory() ? 'DIR' : 'FILE'
  736       if (needDir && type === 'FILE')
  737         return cb()
  738       else
  739         return cb(null, type, stat)
  740     }
  741   }
  742 
  743   var self = this
  744   var statcb = inflight('stat\0' + abs, lstatcb_)
  745   if (statcb)
  746     fs.lstat(abs, statcb)
  747 
  748   function lstatcb_ (er, lstat) {
  749     if (lstat && lstat.isSymbolicLink()) {
  750       // If it's a symlink, then treat it as the target, unless
  751       // the target does not exist, then treat it as a file.
  752       return fs.stat(abs, function (er, stat) {
  753         if (er)
  754           self._stat2(f, abs, null, lstat, cb)
  755         else
  756           self._stat2(f, abs, er, stat, cb)
  757       })
  758     } else {
  759       self._stat2(f, abs, er, lstat, cb)
  760     }
  761   }
  762 }
  763 
  764 Glob.prototype._stat2 = function (f, abs, er, stat, cb) {
  765   if (er) {
  766     this.statCache[abs] = false
  767     return cb()
  768   }
  769 
  770   var needDir = f.slice(-1) === '/'
  771   this.statCache[abs] = stat
  772 
  773   if (abs.slice(-1) === '/' && !stat.isDirectory())
  774     return cb(null, false, stat)
  775 
  776   var c = stat.isDirectory() ? 'DIR' : 'FILE'
  777   this.cache[abs] = this.cache[abs] || c
  778 
  779   if (needDir && c !== 'DIR')
  780     return cb()
  781 
  782   return cb(null, c, stat)
  783 }