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rOACCT/node_modules/glob/sync.js
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sync.js
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			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)
			}