LCSOGthb / Tools

module.exports = globSync

globSync.GlobSync = GlobSync

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 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.ok(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.ok(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.map(function (p) {

        return typeof p === 'string' ? p : '[*]'

      }).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 = this.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, this.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 = this.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 = this.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)

}