First development of the deploy action (#6)

Deploy js code to an instance of screeps.
Some debugging tools are implemented.

Reviewed-on: #6
Co-authored-by: Philipp Horstenkamp <philipp@horstenkamp.de>
Co-committed-by: Philipp Horstenkamp <philipp@horstenkamp.de>

node_modules/tar-stream/pack.js

@@ -0,0 +1,255 @@
+var constants = require('fs-constants')
+var eos = require('end-of-stream')
+var util = require('util')
+var alloc = require('buffer-alloc')
+var toBuffer = require('to-buffer')
+
+var Readable = require('readable-stream').Readable
+var Writable = require('readable-stream').Writable
+var StringDecoder = require('string_decoder').StringDecoder
+
+var headers = require('./headers')
+
+var DMODE = parseInt('755', 8)
+var FMODE = parseInt('644', 8)
+
+var END_OF_TAR = alloc(1024)
+
+var noop = function () {}
+
+var overflow = function (self, size) {
+  size &= 511
+  if (size) self.push(END_OF_TAR.slice(0, 512 - size))
+}
+
+function modeToType (mode) {
+  switch (mode & constants.S_IFMT) {
+    case constants.S_IFBLK: return 'block-device'
+    case constants.S_IFCHR: return 'character-device'
+    case constants.S_IFDIR: return 'directory'
+    case constants.S_IFIFO: return 'fifo'
+    case constants.S_IFLNK: return 'symlink'
+  }
+
+  return 'file'
+}
+
+var Sink = function (to) {
+  Writable.call(this)
+  this.written = 0
+  this._to = to
+  this._destroyed = false
+}
+
+util.inherits(Sink, Writable)
+
+Sink.prototype._write = function (data, enc, cb) {
+  this.written += data.length
+  if (this._to.push(data)) return cb()
+  this._to._drain = cb
+}
+
+Sink.prototype.destroy = function () {
+  if (this._destroyed) return
+  this._destroyed = true
+  this.emit('close')
+}
+
+var LinkSink = function () {
+  Writable.call(this)
+  this.linkname = ''
+  this._decoder = new StringDecoder('utf-8')
+  this._destroyed = false
+}
+
+util.inherits(LinkSink, Writable)
+
+LinkSink.prototype._write = function (data, enc, cb) {
+  this.linkname += this._decoder.write(data)
+  cb()
+}
+
+LinkSink.prototype.destroy = function () {
+  if (this._destroyed) return
+  this._destroyed = true
+  this.emit('close')
+}
+
+var Void = function () {
+  Writable.call(this)
+  this._destroyed = false
+}
+
+util.inherits(Void, Writable)
+
+Void.prototype._write = function (data, enc, cb) {
+  cb(new Error('No body allowed for this entry'))
+}
+
+Void.prototype.destroy = function () {
+  if (this._destroyed) return
+  this._destroyed = true
+  this.emit('close')
+}
+
+var Pack = function (opts) {
+  if (!(this instanceof Pack)) return new Pack(opts)
+  Readable.call(this, opts)
+
+  this._drain = noop
+  this._finalized = false
+  this._finalizing = false
+  this._destroyed = false
+  this._stream = null
+}
+
+util.inherits(Pack, Readable)
+
+Pack.prototype.entry = function (header, buffer, callback) {
+  if (this._stream) throw new Error('already piping an entry')
+  if (this._finalized || this._destroyed) return
+
+  if (typeof buffer === 'function') {
+    callback = buffer
+    buffer = null
+  }
+
+  if (!callback) callback = noop
+
+  var self = this
+
+  if (!header.size || header.type === 'symlink') header.size = 0
+  if (!header.type) header.type = modeToType(header.mode)
+  if (!header.mode) header.mode = header.type === 'directory' ? DMODE : FMODE
+  if (!header.uid) header.uid = 0
+  if (!header.gid) header.gid = 0
+  if (!header.mtime) header.mtime = new Date()
+
+  if (typeof buffer === 'string') buffer = toBuffer(buffer)
+  if (Buffer.isBuffer(buffer)) {
+    header.size = buffer.length
+    this._encode(header)
+    this.push(buffer)
+    overflow(self, header.size)
+    process.nextTick(callback)
+    return new Void()
+  }
+
+  if (header.type === 'symlink' && !header.linkname) {
+    var linkSink = new LinkSink()
+    eos(linkSink, function (err) {
+      if (err) { // stream was closed
+        self.destroy()
+        return callback(err)
+      }
+
+      header.linkname = linkSink.linkname
+      self._encode(header)
+      callback()
+    })
+
+    return linkSink
+  }
+
+  this._encode(header)
+
+  if (header.type !== 'file' && header.type !== 'contiguous-file') {
+    process.nextTick(callback)
+    return new Void()
+  }
+
+  var sink = new Sink(this)
+
+  this._stream = sink
+
+  eos(sink, function (err) {
+    self._stream = null
+
+    if (err) { // stream was closed
+      self.destroy()
+      return callback(err)
+    }
+
+    if (sink.written !== header.size) { // corrupting tar
+      self.destroy()
+      return callback(new Error('size mismatch'))
+    }
+
+    overflow(self, header.size)
+    if (self._finalizing) self.finalize()
+    callback()
+  })
+
+  return sink
+}
+
+Pack.prototype.finalize = function () {
+  if (this._stream) {
+    this._finalizing = true
+    return
+  }
+
+  if (this._finalized) return
+  this._finalized = true
+  this.push(END_OF_TAR)
+  this.push(null)
+}
+
+Pack.prototype.destroy = function (err) {
+  if (this._destroyed) return
+  this._destroyed = true
+
+  if (err) this.emit('error', err)
+  this.emit('close')
+  if (this._stream && this._stream.destroy) this._stream.destroy()
+}
+
+Pack.prototype._encode = function (header) {
+  if (!header.pax) {
+    var buf = headers.encode(header)
+    if (buf) {
+      this.push(buf)
+      return
+    }
+  }
+  this._encodePax(header)
+}
+
+Pack.prototype._encodePax = function (header) {
+  var paxHeader = headers.encodePax({
+    name: header.name,
+    linkname: header.linkname,
+    pax: header.pax
+  })
+
+  var newHeader = {
+    name: 'PaxHeader',
+    mode: header.mode,
+    uid: header.uid,
+    gid: header.gid,
+    size: paxHeader.length,
+    mtime: header.mtime,
+    type: 'pax-header',
+    linkname: header.linkname && 'PaxHeader',
+    uname: header.uname,
+    gname: header.gname,
+    devmajor: header.devmajor,
+    devminor: header.devminor
+  }
+
+  this.push(headers.encode(newHeader))
+  this.push(paxHeader)
+  overflow(this, paxHeader.length)
+
+  newHeader.size = header.size
+  newHeader.type = header.type
+  this.push(headers.encode(newHeader))
+}
+
+Pack.prototype._read = function (n) {
+  var drain = this._drain
+  this._drain = noop
+  drain()
+}
+
+module.exports = Pack