aaac7fed
 liuqimichale
add
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// pipe in an fstream, and it'll make a tarball.
// key-value pair argument is global extended header props.
module.exports = Pack
var EntryWriter = require("./entry-writer.js")
, Stream = require("stream").Stream
, path = require("path")
, inherits = require("inherits")
, GlobalHeaderWriter = require("./global-header-writer.js")
, collect = require("fstream").collect
, eof = new Buffer(512)
for (var i = 0; i < 512; i ++) eof[i] = 0
inherits(Pack, Stream)
function Pack (props) {
// console.error("-- p ctor")
var me = this
if (!(me instanceof Pack)) return new Pack(props)
if (props) me._noProprietary = props.noProprietary
else me._noProprietary = false
me._global = props
me.readable = true
me.writable = true
me._buffer = []
// console.error("-- -- set current to null in ctor")
me._currentEntry = null
me._processing = false
me._pipeRoot = null
me.on("pipe", function (src) {
if (src.root === me._pipeRoot) return
me._pipeRoot = src
src.on("end", function () {
me._pipeRoot = null
})
me.add(src)
})
}
Pack.prototype.addGlobal = function (props) {
// console.error("-- p addGlobal")
if (this._didGlobal) return
this._didGlobal = true
var me = this
GlobalHeaderWriter(props)
.on("data", function (c) {
me.emit("data", c)
})
.end()
}
Pack.prototype.add = function (stream) {
if (this._global && !this._didGlobal) this.addGlobal(this._global)
if (this._ended) return this.emit("error", new Error("add after end"))
collect(stream)
this._buffer.push(stream)
this._process()
this._needDrain = this._buffer.length > 0
return !this._needDrain
}
Pack.prototype.pause = function () {
this._paused = true
if (this._currentEntry) this._currentEntry.pause()
this.emit("pause")
}
Pack.prototype.resume = function () {
this._paused = false
if (this._currentEntry) this._currentEntry.resume()
this.emit("resume")
this._process()
}
Pack.prototype.end = function () {
this._ended = true
this._buffer.push(eof)
this._process()
}
Pack.prototype._process = function () {
var me = this
if (me._paused || me._processing) {
return
}
var entry = me._buffer.shift()
if (!entry) {
if (me._needDrain) {
me.emit("drain")
}
return
}
if (entry.ready === false) {
// console.error("-- entry is not ready", entry)
me._buffer.unshift(entry)
entry.on("ready", function () {
// console.error("-- -- ready!", entry)
me._process()
})
return
}
me._processing = true
if (entry === eof) {
// need 2 ending null blocks.
me.emit("data", eof)
me.emit("data", eof)
me.emit("end")
me.emit("close")
return
}
// Change the path to be relative to the root dir that was
// added to the tarball.
//
// XXX This should be more like how -C works, so you can
// explicitly set a root dir, and also explicitly set a pathname
// in the tarball to use. That way we can skip a lot of extra
// work when resolving symlinks for bundled dependencies in npm.
var root = path.dirname((entry.root || entry).path);
if (me._global && me._global.fromBase && entry.root && entry.root.path) {
// user set 'fromBase: true' indicating tar root should be directory itself
root = entry.root.path;
}
var wprops = {}
Object.keys(entry.props || {}).forEach(function (k) {
wprops[k] = entry.props[k]
})
if (me._noProprietary) wprops.noProprietary = true
wprops.path = path.relative(root, entry.path || '')
// actually not a matter of opinion or taste.
if (process.platform === "win32") {
wprops.path = wprops.path.replace(/\\/g, "/")
}
if (!wprops.type)
wprops.type = 'Directory'
switch (wprops.type) {
// sockets not supported
case "Socket":
return
case "Directory":
wprops.path += "/"
wprops.size = 0
break
case "Link":
var lp = path.resolve(path.dirname(entry.path), entry.linkpath)
wprops.linkpath = path.relative(root, lp) || "."
wprops.size = 0
break
case "SymbolicLink":
var lp = path.resolve(path.dirname(entry.path), entry.linkpath)
wprops.linkpath = path.relative(path.dirname(entry.path), lp) || "."
wprops.size = 0
break
}
// console.error("-- new writer", wprops)
// if (!wprops.type) {
// // console.error("-- no type?", entry.constructor.name, entry)
// }
// console.error("-- -- set current to new writer", wprops.path)
var writer = me._currentEntry = EntryWriter(wprops)
writer.parent = me
// writer.on("end", function () {
// // console.error("-- -- writer end", writer.path)
// })
writer.on("data", function (c) {
me.emit("data", c)
})
writer.on("header", function () {
Buffer.prototype.toJSON = function () {
return this.toString().split(/\0/).join(".")
}
// console.error("-- -- writer header %j", writer.props)
if (writer.props.size === 0) nextEntry()
})
writer.on("close", nextEntry)
var ended = false
function nextEntry () {
if (ended) return
ended = true
// console.error("-- -- writer close", writer.path)
// console.error("-- -- set current to null", wprops.path)
me._currentEntry = null
me._processing = false
me._process()
}
writer.on("error", function (er) {
// console.error("-- -- writer error", writer.path)
me.emit("error", er)
})
// if it's the root, then there's no need to add its entries,
// or data, since they'll be added directly.
if (entry === me._pipeRoot) {
// console.error("-- is the root, don't auto-add")
writer.add = null
}
entry.pipe(writer)
}
Pack.prototype.destroy = function () {}
Pack.prototype.write = function () {}
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