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use external prototype for #42

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This commit is contained in:
Mathias Buus 2015-10-28 10:10:40 -07:00
parent e685cb179e
commit b32b80384b
1 changed files with 27 additions and 12 deletions
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39
pack.js
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@ -5,6 +5,7 @@ var util = require('util')
var Readable = require('readable-stream').Readable var Readable = require('readable-stream').Readable
var PassThrough = require('readable-stream').PassThrough var PassThrough = require('readable-stream').PassThrough
var Writable = require('readable-stream').Writable var Writable = require('readable-stream').Writable
var StringDecoder = require('string_decoder').StringDecoder
var headers = require('./headers') var headers = require('./headers')
@ -19,7 +20,7 @@ var overflow = function(self, size) {
if (size) self.push(END_OF_TAR.slice(0, 512 - size)) if (size) self.push(END_OF_TAR.slice(0, 512 - size))
} }
function mode2type(mode) { function modeToType(mode) {
switch (mode & constants.S_IFMT) { switch (mode & constants.S_IFMT) {
case constants.S_IFBLK: return 'block-device' case constants.S_IFBLK: return 'block-device'
case constants.S_IFCHR: return 'character-device' case constants.S_IFCHR: return 'character-device'
@ -52,6 +53,26 @@ Sink.prototype.destroy = function() {
this.emit('close') 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() { var Void = function() {
Writable.call(this) Writable.call(this)
this._destroyed = false this._destroyed = false
@ -96,7 +117,7 @@ Pack.prototype.entry = function(header, buffer, callback) {
var self = this var self = this
if (!header.size) header.size = 0 if (!header.size) header.size = 0
if (!header.type) header.type = mode2type(header.mode) if (!header.type) header.type = modeToType(header.mode)
if (!header.mode) header.mode = header.type === 'directory' ? 0755 : 0644 if (!header.mode) header.mode = header.type === 'directory' ? 0755 : 0644
if (!header.uid) header.uid = 0 if (!header.uid) header.uid = 0
if (!header.gid) header.gid = 0 if (!header.gid) header.gid = 0
@ -113,25 +134,19 @@ Pack.prototype.entry = function(header, buffer, callback) {
} }
if (header.type === 'symlink' && !header.linkname) { if (header.type === 'symlink' && !header.linkname) {
var stream = new Writable var linkSink = new LinkSink()
var linkname = '' eos(linkSink, function(err) {
stream._write = function(data, enc, cb) {
linkname += data
cb()
}
eos(stream, function(err) {
if (err) { // stream was closed if (err) { // stream was closed
self.destroy() self.destroy()
return callback(err) return callback(err)
} }
header.linkname = linkname header.linkname = linkSink.linkname
self._encode(header) self._encode(header)
callback() callback()
}) })
return stream return linkSink
} }
this._encode(header) this._encode(header)