pixelnode/node_modules/glob/glob.js

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2018-04-04 12:31:55 +02:00
// Approach:
//
// 1. Get the minimatch set
// 2. For each pattern in the set, PROCESS(pattern)
// 3. Store matches per-set, then uniq them
//
// PROCESS(pattern)
// Get the first [n] items from pattern that are all strings
// Join these together. This is PREFIX.
// If there is no more remaining, then stat(PREFIX) and
// add to matches if it succeeds. END.
// readdir(PREFIX) as ENTRIES
// If fails, END
// If pattern[n] is GLOBSTAR
// // handle the case where the globstar match is empty
// // by pruning it out, and testing the resulting pattern
// PROCESS(pattern[0..n] + pattern[n+1 .. $])
// // handle other cases.
// for ENTRY in ENTRIES (not dotfiles)
// // attach globstar + tail onto the entry
// PROCESS(pattern[0..n] + ENTRY + pattern[n .. $])
//
// else // not globstar
// for ENTRY in ENTRIES (not dotfiles, unless pattern[n] is dot)
// Test ENTRY against pattern[n]
// If fails, continue
// If passes, PROCESS(pattern[0..n] + item + pattern[n+1 .. $])
//
// Caveat:
// Cache all stats and readdirs results to minimize syscall. Since all
// we ever care about is existence and directory-ness, we can just keep
// `true` for files, and [children,...] for directories, or `false` for
// things that don't exist.
module.exports = glob
var fs = require("fs")
, minimatch = require("minimatch")
, Minimatch = minimatch.Minimatch
, inherits = require("inherits")
, EE = require("events").EventEmitter
, path = require("path")
, isDir = {}
, assert = require("assert").ok
function glob (pattern, options, cb) {
if (typeof options === "function") cb = options, options = {}
if (!options) options = {}
if (typeof options === "number") {
deprecated()
return
}
var g = new Glob(pattern, options, cb)
return g.sync ? g.found : g
}
glob.fnmatch = deprecated
function deprecated () {
throw new Error("glob's interface has changed. Please see the docs.")
}
glob.sync = globSync
function globSync (pattern, options) {
if (typeof options === "number") {
deprecated()
return
}
options = options || {}
options.sync = true
return glob(pattern, options)
}
this._processingEmitQueue = false
glob.Glob = Glob
inherits(Glob, EE)
function Glob (pattern, options, cb) {
if (!(this instanceof Glob)) {
return new Glob(pattern, options, cb)
}
if (typeof options === "function") {
cb = options
options = null
}
if (typeof cb === "function") {
this.on("error", cb)
this.on("end", function (matches) {
cb(null, matches)
})
}
options = options || {}
this._endEmitted = false
this.EOF = {}
this._emitQueue = []
this.paused = false
this._processingEmitQueue = false
this.maxDepth = options.maxDepth || 1000
this.maxLength = options.maxLength || Infinity
this.cache = options.cache || {}
this.statCache = options.statCache || {}
this.changedCwd = false
var cwd = process.cwd()
if (!options.hasOwnProperty("cwd")) this.cwd = cwd
else {
this.cwd = options.cwd
this.changedCwd = path.resolve(options.cwd) !== cwd
}
this.root = options.root || path.resolve(this.cwd, "/")
this.root = path.resolve(this.root)
if (process.platform === "win32")
this.root = this.root.replace(/\\/g, "/")
this.nomount = !!options.nomount
if (!pattern) {
throw new Error("must provide pattern")
}
// base-matching: just use globstar for that.
if (options.matchBase && -1 === pattern.indexOf("/")) {
if (options.noglobstar) {
throw new Error("base matching requires globstar")
}
pattern = "**/" + pattern
}
this.strict = options.strict !== false
this.dot = !!options.dot
this.mark = !!options.mark
this.sync = !!options.sync
this.nounique = !!options.nounique
this.nonull = !!options.nonull
this.nosort = !!options.nosort
this.nocase = !!options.nocase
this.stat = !!options.stat
this.debug = !!options.debug || !!options.globDebug
if (this.debug)
this.log = console.error
this.silent = !!options.silent
var mm = this.minimatch = new Minimatch(pattern, options)
this.options = mm.options
pattern = this.pattern = mm.pattern
this.error = null
this.aborted = false
// list of all the patterns that ** has resolved do, so
// we can avoid visiting multiple times.
this._globstars = {}
EE.call(this)
// process each pattern in the minimatch set
var n = this.minimatch.set.length
// The matches are stored as {<filename>: true,...} so that
// duplicates are automagically pruned.
// Later, we do an Object.keys() on these.
// Keep them as a list so we can fill in when nonull is set.
this.matches = new Array(n)
this.minimatch.set.forEach(iterator.bind(this))
function iterator (pattern, i, set) {
this._process(pattern, 0, i, function (er) {
if (er) this.emit("error", er)
if (-- n <= 0) this._finish()
})
}
}
Glob.prototype.log = function () {}
Glob.prototype._finish = function () {
assert(this instanceof Glob)
var nou = this.nounique
, all = nou ? [] : {}
for (var i = 0, l = this.matches.length; i < l; i ++) {
var matches = this.matches[i]
this.log("matches[%d] =", i, matches)
// do like the shell, and spit out the literal glob
if (!matches) {
if (this.nonull) {
var literal = this.minimatch.globSet[i]
if (nou) all.push(literal)
else all[literal] = true
}
} else {
// had matches
var m = Object.keys(matches)
if (nou) all.push.apply(all, m)
else m.forEach(function (m) {
all[m] = true
})
}
}
if (!nou) all = Object.keys(all)
if (!this.nosort) {
all = all.sort(this.nocase ? alphasorti : alphasort)
}
if (this.mark) {
// at *some* point we statted all of these
all = all.map(this._mark, this)
}
this.log("emitting end", all)
this.EOF = this.found = all
this.emitMatch(this.EOF)
}
function alphasorti (a, b) {
a = a.toLowerCase()
b = b.toLowerCase()
return alphasort(a, b)
}
function alphasort (a, b) {
return a > b ? 1 : a < b ? -1 : 0
}
Glob.prototype._mark = function (p) {
var c = this.cache[p]
var m = p
if (c) {
var isDir = c === 2 || Array.isArray(c)
var slash = p.slice(-1) === '/'
if (isDir && !slash)
m += '/'
else if (!isDir && slash)
m = m.slice(0, -1)
if (m !== p) {
this.statCache[m] = this.statCache[p]
this.cache[m] = this.cache[p]
}
}
return m
}
Glob.prototype.abort = function () {
this.aborted = true
this.emit("abort")
}
Glob.prototype.pause = function () {
if (this.paused) return
if (this.sync)
this.emit("error", new Error("Can't pause/resume sync glob"))
this.paused = true
this.emit("pause")
}
Glob.prototype.resume = function () {
if (!this.paused) return
if (this.sync)
this.emit("error", new Error("Can't pause/resume sync glob"))
this.paused = false
this.emit("resume")
this._processEmitQueue()
//process.nextTick(this.emit.bind(this, "resume"))
}
Glob.prototype.emitMatch = function (m) {
this.log('emitMatch', m)
this._emitQueue.push(m)
this._processEmitQueue()
}
Glob.prototype._processEmitQueue = function (m) {
this.log("pEQ paused=%j processing=%j m=%j", this.paused,
this._processingEmitQueue, m)
var done = false
while (!this._processingEmitQueue &&
!this.paused) {
this._processingEmitQueue = true
var m = this._emitQueue.shift()
this.log(">processEmitQueue", m === this.EOF ? ":EOF:" : m)
if (!m) {
this.log(">processEmitQueue, falsey m")
this._processingEmitQueue = false
break
}
if (m === this.EOF || !(this.mark && !this.stat)) {
this.log("peq: unmarked, or eof")
next.call(this, 0, false)
} else if (this.statCache[m]) {
var sc = this.statCache[m]
var exists
if (sc)
exists = sc.isDirectory() ? 2 : 1
this.log("peq: stat cached")
next.call(this, exists, exists === 2)
} else {
this.log("peq: _stat, then next")
this._stat(m, next)
}
function next(exists, isDir) {
this.log("next", m, exists, isDir)
var ev = m === this.EOF ? "end" : "match"
// "end" can only happen once.
assert(!this._endEmitted)
if (ev === "end")
this._endEmitted = true
if (exists) {
// Doesn't mean it necessarily doesn't exist, it's possible
// we just didn't check because we don't care that much, or
// this is EOF anyway.
if (isDir && !m.match(/\/$/)) {
m = m + "/"
} else if (!isDir && m.match(/\/$/)) {
m = m.replace(/\/+$/, "")
}
}
this.log("emit", ev, m)
this.emit(ev, m)
this._processingEmitQueue = false
if (done && m !== this.EOF && !this.paused)
this._processEmitQueue()
}
}
done = true
}
Glob.prototype._process = function (pattern, depth, index, cb_) {
assert(this instanceof Glob)
var cb = function cb (er, res) {
assert(this instanceof Glob)
if (this.paused) {
if (!this._processQueue) {
this._processQueue = []
this.once("resume", function () {
var q = this._processQueue
this._processQueue = null
q.forEach(function (cb) { cb() })
})
}
this._processQueue.push(cb_.bind(this, er, res))
} else {
cb_.call(this, er, res)
}
}.bind(this)
if (this.aborted) return cb()
if (depth > this.maxDepth) return cb()
// 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:
prefix = pattern.join("/")
this._stat(prefix, function (exists, isDir) {
// either it's there, or it isn't.
// nothing more to do, either way.
if (exists) {
if (prefix && isAbsolute(prefix) && !this.nomount) {
if (prefix.charAt(0) === "/") {
prefix = path.join(this.root, prefix)
} else {
prefix = path.resolve(this.root, prefix)
}
}
if (process.platform === "win32")
prefix = prefix.replace(/\\/g, "/")
this.matches[index] = this.matches[index] || {}
this.matches[index][prefix] = true
this.emitMatch(prefix)
}
return cb()
})
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)
prefix = prefix.join("/")
break
}
// get the list of entries.
var read
if (prefix === null) read = "."
else if (isAbsolute(prefix) || isAbsolute(pattern.join("/"))) {
if (!prefix || !isAbsolute(prefix)) {
prefix = path.join("/", prefix)
}
read = prefix = path.resolve(prefix)
// if (process.platform === "win32")
// read = prefix = prefix.replace(/^[a-zA-Z]:|\\/g, "/")
this.log('absolute: ', prefix, this.root, pattern, read)
} else {
read = prefix
}
this.log('readdir(%j)', read, this.cwd, this.root)
return this._readdir(read, function (er, entries) {
if (er) {
// not a directory!
// this means that, whatever else comes after this, it can never match
return cb()
}
// globstar is special
if (pattern[n] === minimatch.GLOBSTAR) {
// test without the globstar, and with every child both below
// and replacing the globstar.
var s = [ pattern.slice(0, n).concat(pattern.slice(n + 1)) ]
entries.forEach(function (e) {
if (e.charAt(0) === "." && !this.dot) return
// instead of the globstar
s.push(pattern.slice(0, n).concat(e).concat(pattern.slice(n + 1)))
// below the globstar
s.push(pattern.slice(0, n).concat(e).concat(pattern.slice(n)))
}, this)
s = s.filter(function (pattern) {
var key = gsKey(pattern)
var seen = !this._globstars[key]
this._globstars[key] = true
return seen
}, this)
if (!s.length)
return cb()
// now asyncForEach over this
var l = s.length
, errState = null
s.forEach(function (gsPattern) {
this._process(gsPattern, depth + 1, index, function (er) {
if (errState) return
if (er) return cb(errState = er)
if (--l <= 0) return cb()
})
}, this)
return
}
// not a globstar
// 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 = pattern[n]
var rawGlob = pattern[n]._glob
, dotOk = this.dot || rawGlob.charAt(0) === "."
entries = entries.filter(function (e) {
return (e.charAt(0) !== "." || dotOk) &&
e.match(pattern[n])
})
// If n === pattern.length - 1, then there's no need for the extra stat
// *unless* the user has specified "mark" or "stat" explicitly.
// We know that they exist, since the readdir returned them.
if (n === pattern.length - 1 &&
!this.mark &&
!this.stat) {
entries.forEach(function (e) {
if (prefix) {
if (prefix !== "/") e = prefix + "/" + e
else e = prefix + e
}
if (e.charAt(0) === "/" && !this.nomount) {
e = path.join(this.root, e)
}
if (process.platform === "win32")
e = e.replace(/\\/g, "/")
this.matches[index] = this.matches[index] || {}
this.matches[index][e] = true
this.emitMatch(e)
}, this)
return cb.call(this)
}
// now test all the remaining entries as stand-ins for that part
// of the pattern.
var l = entries.length
, errState = null
if (l === 0) return cb() // no matches possible
entries.forEach(function (e) {
var p = pattern.slice(0, n).concat(e).concat(pattern.slice(n + 1))
this._process(p, depth + 1, index, function (er) {
if (errState) return
if (er) return cb(errState = er)
if (--l === 0) return cb.call(this)
})
}, this)
})
}
function gsKey (pattern) {
return '**' + pattern.map(function (p) {
return (p === minimatch.GLOBSTAR) ? '**' : (''+p)
}).join('/')
}
Glob.prototype._stat = function (f, cb) {
assert(this instanceof Glob)
var abs = f
if (f.charAt(0) === "/") {
abs = path.join(this.root, f)
} else if (this.changedCwd) {
abs = path.resolve(this.cwd, f)
}
if (f.length > this.maxLength) {
var er = new Error("Path name too long")
er.code = "ENAMETOOLONG"
er.path = f
return this._afterStat(f, abs, cb, er)
}
this.log('stat', [this.cwd, f, '=', abs])
if (!this.stat && this.cache.hasOwnProperty(f)) {
var exists = this.cache[f]
, isDir = exists && (Array.isArray(exists) || exists === 2)
if (this.sync) return cb.call(this, !!exists, isDir)
return process.nextTick(cb.bind(this, !!exists, isDir))
}
var stat = this.statCache[abs]
if (this.sync || stat) {
var er
try {
stat = fs.statSync(abs)
} catch (e) {
er = e
}
this._afterStat(f, abs, cb, er, stat)
} else {
fs.stat(abs, this._afterStat.bind(this, f, abs, cb))
}
}
Glob.prototype._afterStat = function (f, abs, cb, er, stat) {
var exists
assert(this instanceof Glob)
if (abs.slice(-1) === "/" && stat && !stat.isDirectory()) {
this.log("should be ENOTDIR, fake it")
er = new Error("ENOTDIR, not a directory '" + abs + "'")
er.path = abs
er.code = "ENOTDIR"
stat = null
}
var emit = !this.statCache[abs]
this.statCache[abs] = stat
if (er || !stat) {
exists = false
} else {
exists = stat.isDirectory() ? 2 : 1
if (emit)
this.emit('stat', f, stat)
}
this.cache[f] = this.cache[f] || exists
cb.call(this, !!exists, exists === 2)
}
Glob.prototype._readdir = function (f, cb) {
assert(this instanceof Glob)
var abs = f
if (f.charAt(0) === "/") {
abs = path.join(this.root, f)
} else if (isAbsolute(f)) {
abs = f
} else if (this.changedCwd) {
abs = path.resolve(this.cwd, f)
}
if (f.length > this.maxLength) {
var er = new Error("Path name too long")
er.code = "ENAMETOOLONG"
er.path = f
return this._afterReaddir(f, abs, cb, er)
}
this.log('readdir', [this.cwd, f, abs])
if (this.cache.hasOwnProperty(f)) {
var c = this.cache[f]
if (Array.isArray(c)) {
if (this.sync) return cb.call(this, null, c)
return process.nextTick(cb.bind(this, null, c))
}
if (!c || c === 1) {
// either ENOENT or ENOTDIR
var code = c ? "ENOTDIR" : "ENOENT"
, er = new Error((c ? "Not a directory" : "Not found") + ": " + f)
er.path = f
er.code = code
this.log(f, er)
if (this.sync) return cb.call(this, er)
return process.nextTick(cb.bind(this, er))
}
// at this point, c === 2, meaning it's a dir, but we haven't
// had to read it yet, or c === true, meaning it's *something*
// but we don't have any idea what. Need to read it, either way.
}
if (this.sync) {
var er, entries
try {
entries = fs.readdirSync(abs)
} catch (e) {
er = e
}
return this._afterReaddir(f, abs, cb, er, entries)
}
fs.readdir(abs, this._afterReaddir.bind(this, f, abs, cb))
}
Glob.prototype._afterReaddir = function (f, abs, cb, er, entries) {
assert(this instanceof Glob)
if (entries && !er) {
this.cache[f] = entries
// if we haven't asked to stat everything for suresies, then just
// assume that everything in there exists, so we can avoid
// having to stat it a second time. This also gets us one step
// further into ELOOP territory.
if (!this.mark && !this.stat) {
entries.forEach(function (e) {
if (f === "/") e = f + e
else e = f + "/" + e
this.cache[e] = true
}, this)
}
return cb.call(this, er, entries)
}
// now handle errors, and cache the information
if (er) switch (er.code) {
case "ENOTDIR": // totally normal. means it *does* exist.
this.cache[f] = 1
return cb.call(this, er)
case "ENOENT": // not terribly unusual
case "ELOOP":
case "ENAMETOOLONG":
case "UNKNOWN":
this.cache[f] = false
return cb.call(this, er)
default: // some unusual error. Treat as failure.
this.cache[f] = false
if (this.strict) this.emit("error", er)
if (!this.silent) console.error("glob error", er)
return cb.call(this, er)
}
}
var isAbsolute = process.platform === "win32" ? absWin : absUnix
function absWin (p) {
if (absUnix(p)) return true
// pull off the device/UNC bit from a windows path.
// from node's lib/path.js
var splitDeviceRe =
/^([a-zA-Z]:|[\\\/]{2}[^\\\/]+[\\\/]+[^\\\/]+)?([\\\/])?([\s\S]*?)$/
, result = splitDeviceRe.exec(p)
, device = result[1] || ''
, isUnc = device && device.charAt(1) !== ':'
, isAbsolute = !!result[2] || isUnc // UNC paths are always absolute
return isAbsolute
}
function absUnix (p) {
return p.charAt(0) === "/" || p === ""
}