Detailansicht verbessert

express-server/node_modules/touch/index.js

@@ -0,0 +1,224 @@
+'use strict'
+
+const EE = require('events').EventEmitter
+const cons = require('constants')
+const fs = require('fs')
+
+module.exports = (f, options, cb) => {
+  if (typeof options === 'function')
+    cb = options, options = {}
+
+  const p = new Promise((res, rej) => {
+    new Touch(validOpts(options, f, null))
+      .on('done', res).on('error', rej)
+  })
+
+  return cb ? p.then(res => cb(null, res), cb) : p
+}
+
+module.exports.sync = module.exports.touchSync = (f, options) =>
+  (new TouchSync(validOpts(options, f, null)), undefined)
+
+module.exports.ftouch = (fd, options, cb) => {
+  if (typeof options === 'function')
+    cb = options, options = {}
+
+  const p = new Promise((res, rej) => {
+    new Touch(validOpts(options, null, fd))
+      .on('done', res).on('error', rej)
+  })
+
+  return cb ? p.then(res => cb(null, res), cb) : p
+}
+
+module.exports.ftouchSync = (fd, opt) =>
+  (new TouchSync(validOpts(opt, null, fd)), undefined)
+
+const validOpts = (options, path, fd) => {
+  options = Object.create(options || {})
+  options.fd = fd
+  options.path = path
+
+  // {mtime: true}, {ctime: true}
+  // If set to something else, then treat as epoch ms value
+  const now = parseInt(new Date(options.time || Date.now()).getTime() / 1000)
+  if (!options.atime && !options.mtime)
+    options.atime = options.mtime = now
+  else {
+    if (true === options.atime)
+      options.atime = now
+
+    if (true === options.mtime)
+      options.mtime = now
+  }
+
+  let oflags = 0
+  if (!options.force)
+    oflags = oflags | cons.O_RDWR
+
+  if (!options.nocreate)
+    oflags = oflags | cons.O_CREAT
+
+  options.oflags = oflags
+  return options
+}
+
+class Touch extends EE {
+  constructor (options) {
+    super(options)
+    this.fd = options.fd
+    this.path = options.path
+    this.atime = options.atime
+    this.mtime = options.mtime
+    this.ref = options.ref
+    this.nocreate = !!options.nocreate
+    this.force = !!options.force
+    this.closeAfter = options.closeAfter
+    this.oflags = options.oflags
+    this.options = options
+
+    if (typeof this.fd !== 'number') {
+      this.closeAfter = true
+      this.open()
+    } else
+      this.onopen(null, this.fd)
+  }
+
+  emit (ev, data) {
+    // we only emit when either done or erroring
+    // in both cases, need to close
+    this.close()
+    return super.emit(ev, data)
+  }
+
+  close () {
+    if (typeof this.fd === 'number' && this.closeAfter)
+      fs.close(this.fd, () => {})
+  }
+
+  open () {
+    fs.open(this.path, this.oflags, (er, fd) => this.onopen(er, fd))
+  }
+
+  onopen (er, fd) {
+    if (er) {
+      if (er.code === 'EISDIR')
+        this.onopen(null, null)
+      else if (er.code === 'ENOENT' && this.nocreate)
+        this.emit('done')
+      else
+        this.emit('error', er)
+    } else {
+      this.fd = fd
+      if (this.ref)
+        this.statref()
+      else if (!this.atime || !this.mtime)
+        this.fstat()
+      else
+        this.futimes()
+    }
+  }
+
+  statref () {
+    fs.stat(this.ref, (er, st) => {
+      if (er)
+        this.emit('error', er)
+      else
+        this.onstatref(st)
+    })
+  }
+
+  onstatref (st) {
+    this.atime = this.atime && parseInt(st.atime.getTime()/1000, 10)
+    this.mtime = this.mtime && parseInt(st.mtime.getTime()/1000, 10)
+    if (!this.atime || !this.mtime)
+      this.fstat()
+    else
+      this.futimes()
+  }
+
+  fstat () {
+    const stat = this.fd ? 'fstat' : 'stat'
+    const target = this.fd || this.path
+    fs[stat](target, (er, st) => {
+      if (er)
+        this.emit('error', er)
+      else
+        this.onfstat(st)
+    })
+  }
+
+  onfstat (st) {
+    if (typeof this.atime !== 'number')
+      this.atime = parseInt(st.atime.getTime()/1000, 10)
+
+    if (typeof this.mtime !== 'number')
+      this.mtime = parseInt(st.mtime.getTime()/1000, 10)
+
+    this.futimes()
+  }
+
+  futimes () {
+    const utimes = this.fd ? 'futimes' : 'utimes'
+    const target = this.fd || this.path
+    fs[utimes](target, ''+this.atime, ''+this.mtime, er => {
+      if (er)
+        this.emit('error', er)
+      else
+        this.emit('done')
+    })
+  }
+}
+
+class TouchSync extends Touch {
+  open () {
+    try {
+      this.onopen(null, fs.openSync(this.path, this.oflags))
+    } catch (er) {
+      this.onopen(er)
+    }
+  }
+
+  statref () {
+    let threw = true
+    try {
+      this.onstatref(fs.statSync(this.ref))
+      threw = false
+    } finally {
+      if (threw)
+        this.close()
+    }
+  }
+
+  fstat () {
+    let threw = true
+    const stat = this.fd ? 'fstatSync' : 'statSync'
+    const target = this.fd || this.path
+    try {
+      this.onfstat(fs[stat](target))
+      threw = false
+    } finally {
+      if (threw)
+        this.close()
+    }
+  }
+
+  futimes () {
+    let threw = true
+    const utimes = this.fd ? 'futimesSync' : 'utimesSync'
+    const target = this.fd || this.path
+    try {
+      fs[utimes](target, this.atime, this.mtime)
+      threw = false
+    } finally {
+      if (threw)
+        this.close()
+    }
+    this.emit('done')
+  }
+
+  close () {
+    if (typeof this.fd === 'number' && this.closeAfter)
+      try { fs.closeSync(this.fd) } catch (er) {}
+  }
+}