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better destroy logic for pack stream

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This commit is contained in:
Mathias Buus 2013-12-20 22:57:45 +01:00
parent c39a9a4498
commit 3ee758edd0
1 changed files with 20 additions and 6 deletions
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26
pack.js
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@ -15,6 +15,7 @@ var overflow = function(self, size) {
var Sink = function(to) {
stream.Writable.call(this);
this.written = 0;
this._to = to;
this._destroyed = false;
};
@ -22,6 +23,7 @@ var Sink = function(to) {
util.inherits(Sink, stream.Writable);
Sink.prototype._write = function(data, enc, cb) {
this.written += data.length;
if (this._to.push(data)) return cb();
this._to._drain = cb;
};
@ -38,7 +40,7 @@ var Pack = function(opts) {
this._drain = noop;
this._finalized = false;
this._shouldFinalize = false;
this._finalizing = false;
this._destroyed = false;
this._stream = null;
};
@ -46,13 +48,15 @@ var Pack = function(opts) {
util.inherits(Pack, stream.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;
if (this._stream) throw new Error('already piping an entry');
var self = this;
@ -80,10 +84,20 @@ Pack.prototype.entry = function(header, buffer, callback) {
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._shouldFinalize) self.finalize();
if (err) self.destroy();
callback(err);
if (self._finalizing) self.finalize();
callback();
});
return sink;
@ -91,7 +105,7 @@ Pack.prototype.entry = function(header, buffer, callback) {
Pack.prototype.finalize = function() {
if (this._stream) {
this._shouldFinalize = true;
this._finalizing = true;
return;
}