l0bsterssg

sync.js (12002B)

---

 module.exports = globSync
 globSync.GlobSync = GlobSync
 
 var fs = require('fs')
 var rp = require('fs.realpath')
 var minimatch = require('minimatch')
 var Minimatch = minimatch.Minimatch
 var Glob = require('./glob.js').Glob
 var util = require('util')
 var path = require('path')
 var assert = require('assert')
 var isAbsolute = require('path-is-absolute')
 var common = require('./common.js')
 var alphasort = common.alphasort
 var alphasorti = common.alphasorti
 var setopts = common.setopts
 var ownProp = common.ownProp
 var childrenIgnored = common.childrenIgnored
 var isIgnored = common.isIgnored
 
 function globSync (pattern, options) {
   if (typeof options === 'function' || arguments.length === 3)
     throw new TypeError('callback provided to sync glob\n'+
                         'See: https://github.com/isaacs/node-glob/issues/167')
 
   return new GlobSync(pattern, options).found
 }
 
 function GlobSync (pattern, options) {
   if (!pattern)
     throw new Error('must provide pattern')
 
   if (typeof options === 'function' || arguments.length === 3)
     throw new TypeError('callback provided to sync glob\n'+
                         'See: https://github.com/isaacs/node-glob/issues/167')
 
   if (!(this instanceof GlobSync))
     return new GlobSync(pattern, options)
 
   setopts(this, pattern, options)
 
   if (this.noprocess)
     return this
 
   var n = this.minimatch.set.length
   this.matches = new Array(n)
   for (var i = 0; i < n; i ++) {
     this._process(this.minimatch.set[i], i, false)
   }
   this._finish()
 }
 
 GlobSync.prototype._finish = function () {
   assert(this instanceof GlobSync)
   if (this.realpath) {
     var self = this
     this.matches.forEach(function (matchset, index) {
       var set = self.matches[index] = Object.create(null)
       for (var p in matchset) {
         try {
           p = self._makeAbs(p)
           var real = rp.realpathSync(p, self.realpathCache)
           set[real] = true
         } catch (er) {
           if (er.syscall === 'stat')
             set[self._makeAbs(p)] = true
           else
             throw er
         }
       }
     })
   }
   common.finish(this)
 }
 
 
 GlobSync.prototype._process = function (pattern, index, inGlobStar) {
   assert(this instanceof GlobSync)
 
   // Get the first [n] parts of pattern that are all strings.
   var n = 0
   while (typeof pattern[n] === 'string') {
     n ++
   }
   // now n is the index of the first one that is *not* a string.
 
   // See if there's anything else
   var prefix
   switch (n) {
     // if not, then this is rather simple
     case pattern.length:
       this._processSimple(pattern.join('/'), index)
       return
 
     case 0:
       // pattern *starts* with some non-trivial item.
       // going to readdir(cwd), but not include the prefix in matches.
       prefix = null
       break
 
     default:
       // pattern has some string bits in the front.
       // whatever it starts with, whether that's 'absolute' like /foo/bar,
       // or 'relative' like '../baz'
       prefix = pattern.slice(0, n).join('/')
       break
   }
 
   var remain = pattern.slice(n)
 
   // get the list of entries.
   var read
   if (prefix === null)
     read = '.'
   else if (isAbsolute(prefix) || isAbsolute(pattern.join('/'))) {
     if (!prefix || !isAbsolute(prefix))
       prefix = '/' + prefix
     read = prefix
   } else
     read = prefix
 
   var abs = this._makeAbs(read)
 
   //if ignored, skip processing
   if (childrenIgnored(this, read))
     return
 
   var isGlobStar = remain[0] === minimatch.GLOBSTAR
   if (isGlobStar)
     this._processGlobStar(prefix, read, abs, remain, index, inGlobStar)
   else
     this._processReaddir(prefix, read, abs, remain, index, inGlobStar)
 }
 
 
 GlobSync.prototype._processReaddir = function (prefix, read, abs, remain, index, inGlobStar) {
   var entries = this._readdir(abs, inGlobStar)
 
   // if the abs isn't a dir, then nothing can match!
   if (!entries)
     return
 
   // It will only match dot entries if it starts with a dot, or if
   // dot is set.  Stuff like @(.foo|.bar) isn't allowed.
   var pn = remain[0]
   var negate = !!this.minimatch.negate
   var rawGlob = pn._glob
   var dotOk = this.dot || rawGlob.charAt(0) === '.'
 
   var matchedEntries = []
   for (var i = 0; i < entries.length; i++) {
     var e = entries[i]
     if (e.charAt(0) !== '.' || dotOk) {
       var m
       if (negate && !prefix) {
         m = !e.match(pn)
       } else {
         m = e.match(pn)
       }
       if (m)
         matchedEntries.push(e)
     }
   }
 
   var len = matchedEntries.length
   // If there are no matched entries, then nothing matches.
   if (len === 0)
     return
 
   // if this is the last remaining pattern bit, then no need for
   // an additional stat *unless* the user has specified mark or
   // stat explicitly.  We know they exist, since readdir returned
   // them.
 
   if (remain.length === 1 && !this.mark && !this.stat) {
     if (!this.matches[index])
       this.matches[index] = Object.create(null)
 
     for (var i = 0; i < len; i ++) {
       var e = matchedEntries[i]
       if (prefix) {
         if (prefix.slice(-1) !== '/')
           e = prefix + '/' + e
         else
           e = prefix + e
       }
 
       if (e.charAt(0) === '/' && !this.nomount) {
         e = path.join(this.root, e)
       }
       this._emitMatch(index, e)
     }
     // This was the last one, and no stats were needed
     return
   }
 
   // now test all matched entries as stand-ins for that part
   // of the pattern.
   remain.shift()
   for (var i = 0; i < len; i ++) {
     var e = matchedEntries[i]
     var newPattern
     if (prefix)
       newPattern = [prefix, e]
     else
       newPattern = [e]
     this._process(newPattern.concat(remain), index, inGlobStar)
   }
 }
 
 
 GlobSync.prototype._emitMatch = function (index, e) {
   if (isIgnored(this, e))
     return
 
   var abs = this._makeAbs(e)
 
   if (this.mark)
     e = this._mark(e)
 
   if (this.absolute) {
     e = abs
   }
 
   if (this.matches[index][e])
     return
 
   if (this.nodir) {
     var c = this.cache[abs]
     if (c === 'DIR' || Array.isArray(c))
       return
   }
 
   this.matches[index][e] = true
 
   if (this.stat)
     this._stat(e)
 }
 
 
 GlobSync.prototype._readdirInGlobStar = function (abs) {
   // follow all symlinked directories forever
   // just proceed as if this is a non-globstar situation
   if (this.follow)
     return this._readdir(abs, false)
 
   var entries
   var lstat
   var stat
   try {
     lstat = fs.lstatSync(abs)
   } catch (er) {
     if (er.code === 'ENOENT') {
       // lstat failed, doesn't exist
       return null
     }
   }
 
   var isSym = lstat && lstat.isSymbolicLink()
   this.symlinks[abs] = isSym
 
   // If it's not a symlink or a dir, then it's definitely a regular file.
   // don't bother doing a readdir in that case.
   if (!isSym && lstat && !lstat.isDirectory())
     this.cache[abs] = 'FILE'
   else
     entries = this._readdir(abs, false)
 
   return entries
 }
 
 GlobSync.prototype._readdir = function (abs, inGlobStar) {
   var entries
 
   if (inGlobStar && !ownProp(this.symlinks, abs))
     return this._readdirInGlobStar(abs)
 
   if (ownProp(this.cache, abs)) {
     var c = this.cache[abs]
     if (!c || c === 'FILE')
       return null
 
     if (Array.isArray(c))
       return c
   }
 
   try {
     return this._readdirEntries(abs, fs.readdirSync(abs))
   } catch (er) {
     this._readdirError(abs, er)
     return null
   }
 }
 
 GlobSync.prototype._readdirEntries = function (abs, entries) {
   // if we haven't asked to stat everything, then just
   // assume that everything in there exists, so we can avoid
   // having to stat it a second time.
   if (!this.mark && !this.stat) {
     for (var i = 0; i < entries.length; i ++) {
       var e = entries[i]
       if (abs === '/')
         e = abs + e
       else
         e = abs + '/' + e
       this.cache[e] = true
     }
   }
 
   this.cache[abs] = entries
 
   // mark and cache dir-ness
   return entries
 }
 
 GlobSync.prototype._readdirError = function (f, er) {
   // handle errors, and cache the information
   switch (er.code) {
     case 'ENOTSUP': // https://github.com/isaacs/node-glob/issues/205
     case 'ENOTDIR': // totally normal. means it *does* exist.
       var abs = this._makeAbs(f)
       this.cache[abs] = 'FILE'
       if (abs === this.cwdAbs) {
         var error = new Error(er.code + ' invalid cwd ' + this.cwd)
         error.path = this.cwd
         error.code = er.code
         throw error
       }
       break
 
     case 'ENOENT': // not terribly unusual
     case 'ELOOP':
     case 'ENAMETOOLONG':
     case 'UNKNOWN':
       this.cache[this._makeAbs(f)] = false
       break
 
     default: // some unusual error.  Treat as failure.
       this.cache[this._makeAbs(f)] = false
       if (this.strict)
         throw er
       if (!this.silent)
         console.error('glob error', er)
       break
   }
 }
 
 GlobSync.prototype._processGlobStar = function (prefix, read, abs, remain, index, inGlobStar) {
 
   var entries = this._readdir(abs, inGlobStar)
 
   // no entries means not a dir, so it can never have matches
   // foo.txt/** doesn't match foo.txt
   if (!entries)
     return
 
   // test without the globstar, and with every child both below
   // and replacing the globstar.
   var remainWithoutGlobStar = remain.slice(1)
   var gspref = prefix ? [ prefix ] : []
   var noGlobStar = gspref.concat(remainWithoutGlobStar)
 
   // the noGlobStar pattern exits the inGlobStar state
   this._process(noGlobStar, index, false)
 
   var len = entries.length
   var isSym = this.symlinks[abs]
 
   // If it's a symlink, and we're in a globstar, then stop
   if (isSym && inGlobStar)
     return
 
   for (var i = 0; i < len; i++) {
     var e = entries[i]
     if (e.charAt(0) === '.' && !this.dot)
       continue
 
     // these two cases enter the inGlobStar state
     var instead = gspref.concat(entries[i], remainWithoutGlobStar)
     this._process(instead, index, true)
 
     var below = gspref.concat(entries[i], remain)
     this._process(below, index, true)
   }
 }
 
 GlobSync.prototype._processSimple = function (prefix, index) {
   // XXX review this.  Shouldn't it be doing the mounting etc
   // before doing stat?  kinda weird?
   var exists = this._stat(prefix)
 
   if (!this.matches[index])
     this.matches[index] = Object.create(null)
 
   // If it doesn't exist, then just mark the lack of results
   if (!exists)
     return
 
   if (prefix && isAbsolute(prefix) && !this.nomount) {
     var trail = /[\/\\]$/.test(prefix)
     if (prefix.charAt(0) === '/') {
       prefix = path.join(this.root, prefix)
     } else {
       prefix = path.resolve(this.root, prefix)
       if (trail)
         prefix += '/'
     }
   }
 
   if (process.platform === 'win32')
     prefix = prefix.replace(/\\/g, '/')
 
   // Mark this as a match
   this._emitMatch(index, prefix)
 }
 
 // Returns either 'DIR', 'FILE', or false
 GlobSync.prototype._stat = function (f) {
   var abs = this._makeAbs(f)
   var needDir = f.slice(-1) === '/'
 
   if (f.length > this.maxLength)
     return false
 
   if (!this.stat && ownProp(this.cache, abs)) {
     var c = this.cache[abs]
 
     if (Array.isArray(c))
       c = 'DIR'
 
     // It exists, but maybe not how we need it
     if (!needDir || c === 'DIR')
       return c
 
     if (needDir && c === 'FILE')
       return false
 
     // otherwise we have to stat, because maybe c=true
     // if we know it exists, but not what it is.
   }
 
   var exists
   var stat = this.statCache[abs]
   if (!stat) {
     var lstat
     try {
       lstat = fs.lstatSync(abs)
     } catch (er) {
       if (er && (er.code === 'ENOENT' || er.code === 'ENOTDIR')) {
         this.statCache[abs] = false
         return false
       }
     }
 
     if (lstat && lstat.isSymbolicLink()) {
       try {
         stat = fs.statSync(abs)
       } catch (er) {
         stat = lstat
       }
     } else {
       stat = lstat
     }
   }
 
   this.statCache[abs] = stat
 
   var c = true
   if (stat)
     c = stat.isDirectory() ? 'DIR' : 'FILE'
 
   this.cache[abs] = this.cache[abs] || c
 
   if (needDir && c === 'FILE')
     return false
 
   return c
 }
 
 GlobSync.prototype._mark = function (p) {
   return common.mark(this, p)
 }
 
 GlobSync.prototype._makeAbs = function (f) {
   return common.makeAbs(this, f)
 }