Added logging, changed some directory structure

This commit is contained in:
2018-01-13 21:33:40 -05:00
parent f079a5f067
commit 8e72ffb917
73656 changed files with 35284 additions and 53718 deletions

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node_modules/
.DS_Store

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language: node_js
node_js:
- "0.10"

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# browserify-zlib
Emulates Node's [zlib](http://nodejs.org/api/zlib.html) module for [Browserify](http://browserify.org)
using [pako](https://github.com/nodeca/pako). It uses the actual Node source code and passes the Node zlib tests
by emulating the C++ binding that actually calls zlib.
[![browser support](https://ci.testling.com/devongovett/browserify-zlib.png)
](https://ci.testling.com/devongovett/browserify-zlib)
[![node tests](https://travis-ci.org/devongovett/browserify-zlib.svg)
](https://travis-ci.org/devongovett/browserify-zlib)
## Not implemented
The following options/methods are not supported because pako does not support them yet.
* The `params` method
* The `dictionary` option
## License
MIT

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{
"_args": [
[
"browserify-zlib@0.1.4",
"C:\\Users\\deranjer\\go\\src\\github.com\\deranjer\\goTorrent\\torrent-project"
]
],
"_from": "browserify-zlib@0.1.4",
"_id": "browserify-zlib@0.1.4",
"_inBundle": false,
"_integrity": "sha1-uzX4pRn2AOD6a4SFJByXnQFB+y0=",
"_location": "/react-scripts/browserify-zlib",
"_phantomChildren": {},
"_requested": {
"type": "version",
"registry": true,
"raw": "browserify-zlib@0.1.4",
"name": "browserify-zlib",
"escapedName": "browserify-zlib",
"rawSpec": "0.1.4",
"saveSpec": null,
"fetchSpec": "0.1.4"
},
"_requiredBy": [
"/react-scripts/node-libs-browser"
],
"_resolved": "https://registry.npmjs.org/browserify-zlib/-/browserify-zlib-0.1.4.tgz",
"_spec": "0.1.4",
"_where": "C:\\Users\\deranjer\\go\\src\\github.com\\deranjer\\goTorrent\\torrent-project",
"author": {
"name": "Devon Govett",
"email": "devongovett@gmail.com"
},
"bugs": {
"url": "https://github.com/devongovett/browserify-zlib/issues"
},
"dependencies": {
"pako": "~0.2.0"
},
"description": "Full zlib module for browserify",
"devDependencies": {
"brfs": "^1.0.1",
"tape": "^2.12.3"
},
"directories": {
"test": "test"
},
"homepage": "https://github.com/devongovett/browserify-zlib#readme",
"keywords": [
"zlib",
"browserify"
],
"license": "MIT",
"main": "src/index.js",
"name": "browserify-zlib",
"repository": {
"type": "git",
"url": "git://github.com/devongovett/browserify-zlib.git"
},
"scripts": {
"test": "node_modules/tape/bin/tape test/*.js"
},
"testling": {
"files": "test/*.js",
"browsers": [
"ie/6..latest",
"chrome/22..latest",
"firefox/16..latest",
"safari/latest",
"opera/11.0..latest",
"iphone/6",
"ipad/6",
"android-browser/latest"
]
},
"version": "0.1.4"
}

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var msg = require('pako/lib/zlib/messages');
var zstream = require('pako/lib/zlib/zstream');
var zlib_deflate = require('pako/lib/zlib/deflate.js');
var zlib_inflate = require('pako/lib/zlib/inflate.js');
var constants = require('pako/lib/zlib/constants');
for (var key in constants) {
exports[key] = constants[key];
}
// zlib modes
exports.NONE = 0;
exports.DEFLATE = 1;
exports.INFLATE = 2;
exports.GZIP = 3;
exports.GUNZIP = 4;
exports.DEFLATERAW = 5;
exports.INFLATERAW = 6;
exports.UNZIP = 7;
/**
* Emulate Node's zlib C++ layer for use by the JS layer in index.js
*/
function Zlib(mode) {
if (mode < exports.DEFLATE || mode > exports.UNZIP)
throw new TypeError("Bad argument");
this.mode = mode;
this.init_done = false;
this.write_in_progress = false;
this.pending_close = false;
this.windowBits = 0;
this.level = 0;
this.memLevel = 0;
this.strategy = 0;
this.dictionary = null;
}
Zlib.prototype.init = function(windowBits, level, memLevel, strategy, dictionary) {
this.windowBits = windowBits;
this.level = level;
this.memLevel = memLevel;
this.strategy = strategy;
// dictionary not supported.
if (this.mode === exports.GZIP || this.mode === exports.GUNZIP)
this.windowBits += 16;
if (this.mode === exports.UNZIP)
this.windowBits += 32;
if (this.mode === exports.DEFLATERAW || this.mode === exports.INFLATERAW)
this.windowBits = -this.windowBits;
this.strm = new zstream();
switch (this.mode) {
case exports.DEFLATE:
case exports.GZIP:
case exports.DEFLATERAW:
var status = zlib_deflate.deflateInit2(
this.strm,
this.level,
exports.Z_DEFLATED,
this.windowBits,
this.memLevel,
this.strategy
);
break;
case exports.INFLATE:
case exports.GUNZIP:
case exports.INFLATERAW:
case exports.UNZIP:
var status = zlib_inflate.inflateInit2(
this.strm,
this.windowBits
);
break;
default:
throw new Error("Unknown mode " + this.mode);
}
if (status !== exports.Z_OK) {
this._error(status);
return;
}
this.write_in_progress = false;
this.init_done = true;
};
Zlib.prototype.params = function() {
throw new Error("deflateParams Not supported");
};
Zlib.prototype._writeCheck = function() {
if (!this.init_done)
throw new Error("write before init");
if (this.mode === exports.NONE)
throw new Error("already finalized");
if (this.write_in_progress)
throw new Error("write already in progress");
if (this.pending_close)
throw new Error("close is pending");
};
Zlib.prototype.write = function(flush, input, in_off, in_len, out, out_off, out_len) {
this._writeCheck();
this.write_in_progress = true;
var self = this;
process.nextTick(function() {
self.write_in_progress = false;
var res = self._write(flush, input, in_off, in_len, out, out_off, out_len);
self.callback(res[0], res[1]);
if (self.pending_close)
self.close();
});
return this;
};
// set method for Node buffers, used by pako
function bufferSet(data, offset) {
for (var i = 0; i < data.length; i++) {
this[offset + i] = data[i];
}
}
Zlib.prototype.writeSync = function(flush, input, in_off, in_len, out, out_off, out_len) {
this._writeCheck();
return this._write(flush, input, in_off, in_len, out, out_off, out_len);
};
Zlib.prototype._write = function(flush, input, in_off, in_len, out, out_off, out_len) {
this.write_in_progress = true;
if (flush !== exports.Z_NO_FLUSH &&
flush !== exports.Z_PARTIAL_FLUSH &&
flush !== exports.Z_SYNC_FLUSH &&
flush !== exports.Z_FULL_FLUSH &&
flush !== exports.Z_FINISH &&
flush !== exports.Z_BLOCK) {
throw new Error("Invalid flush value");
}
if (input == null) {
input = new Buffer(0);
in_len = 0;
in_off = 0;
}
if (out._set)
out.set = out._set;
else
out.set = bufferSet;
var strm = this.strm;
strm.avail_in = in_len;
strm.input = input;
strm.next_in = in_off;
strm.avail_out = out_len;
strm.output = out;
strm.next_out = out_off;
switch (this.mode) {
case exports.DEFLATE:
case exports.GZIP:
case exports.DEFLATERAW:
var status = zlib_deflate.deflate(strm, flush);
break;
case exports.UNZIP:
case exports.INFLATE:
case exports.GUNZIP:
case exports.INFLATERAW:
var status = zlib_inflate.inflate(strm, flush);
break;
default:
throw new Error("Unknown mode " + this.mode);
}
if (status !== exports.Z_STREAM_END && status !== exports.Z_OK) {
this._error(status);
}
this.write_in_progress = false;
return [strm.avail_in, strm.avail_out];
};
Zlib.prototype.close = function() {
if (this.write_in_progress) {
this.pending_close = true;
return;
}
this.pending_close = false;
if (this.mode === exports.DEFLATE || this.mode === exports.GZIP || this.mode === exports.DEFLATERAW) {
zlib_deflate.deflateEnd(this.strm);
} else {
zlib_inflate.inflateEnd(this.strm);
}
this.mode = exports.NONE;
};
Zlib.prototype.reset = function() {
switch (this.mode) {
case exports.DEFLATE:
case exports.DEFLATERAW:
var status = zlib_deflate.deflateReset(this.strm);
break;
case exports.INFLATE:
case exports.INFLATERAW:
var status = zlib_inflate.inflateReset(this.strm);
break;
}
if (status !== exports.Z_OK) {
this._error(status);
}
};
Zlib.prototype._error = function(status) {
this.onerror(msg[status] + ': ' + this.strm.msg, status);
this.write_in_progress = false;
if (this.pending_close)
this.close();
};
exports.Zlib = Zlib;

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// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
var Transform = require('_stream_transform');
var binding = require('./binding');
var util = require('util');
var assert = require('assert').ok;
// zlib doesn't provide these, so kludge them in following the same
// const naming scheme zlib uses.
binding.Z_MIN_WINDOWBITS = 8;
binding.Z_MAX_WINDOWBITS = 15;
binding.Z_DEFAULT_WINDOWBITS = 15;
// fewer than 64 bytes per chunk is stupid.
// technically it could work with as few as 8, but even 64 bytes
// is absurdly low. Usually a MB or more is best.
binding.Z_MIN_CHUNK = 64;
binding.Z_MAX_CHUNK = Infinity;
binding.Z_DEFAULT_CHUNK = (16 * 1024);
binding.Z_MIN_MEMLEVEL = 1;
binding.Z_MAX_MEMLEVEL = 9;
binding.Z_DEFAULT_MEMLEVEL = 8;
binding.Z_MIN_LEVEL = -1;
binding.Z_MAX_LEVEL = 9;
binding.Z_DEFAULT_LEVEL = binding.Z_DEFAULT_COMPRESSION;
// expose all the zlib constants
Object.keys(binding).forEach(function(k) {
if (k.match(/^Z/)) exports[k] = binding[k];
});
// translation table for return codes.
exports.codes = {
Z_OK: binding.Z_OK,
Z_STREAM_END: binding.Z_STREAM_END,
Z_NEED_DICT: binding.Z_NEED_DICT,
Z_ERRNO: binding.Z_ERRNO,
Z_STREAM_ERROR: binding.Z_STREAM_ERROR,
Z_DATA_ERROR: binding.Z_DATA_ERROR,
Z_MEM_ERROR: binding.Z_MEM_ERROR,
Z_BUF_ERROR: binding.Z_BUF_ERROR,
Z_VERSION_ERROR: binding.Z_VERSION_ERROR
};
Object.keys(exports.codes).forEach(function(k) {
exports.codes[exports.codes[k]] = k;
});
exports.Deflate = Deflate;
exports.Inflate = Inflate;
exports.Gzip = Gzip;
exports.Gunzip = Gunzip;
exports.DeflateRaw = DeflateRaw;
exports.InflateRaw = InflateRaw;
exports.Unzip = Unzip;
exports.createDeflate = function(o) {
return new Deflate(o);
};
exports.createInflate = function(o) {
return new Inflate(o);
};
exports.createDeflateRaw = function(o) {
return new DeflateRaw(o);
};
exports.createInflateRaw = function(o) {
return new InflateRaw(o);
};
exports.createGzip = function(o) {
return new Gzip(o);
};
exports.createGunzip = function(o) {
return new Gunzip(o);
};
exports.createUnzip = function(o) {
return new Unzip(o);
};
// Convenience methods.
// compress/decompress a string or buffer in one step.
exports.deflate = function(buffer, opts, callback) {
if (typeof opts === 'function') {
callback = opts;
opts = {};
}
return zlibBuffer(new Deflate(opts), buffer, callback);
};
exports.deflateSync = function(buffer, opts) {
return zlibBufferSync(new Deflate(opts), buffer);
};
exports.gzip = function(buffer, opts, callback) {
if (typeof opts === 'function') {
callback = opts;
opts = {};
}
return zlibBuffer(new Gzip(opts), buffer, callback);
};
exports.gzipSync = function(buffer, opts) {
return zlibBufferSync(new Gzip(opts), buffer);
};
exports.deflateRaw = function(buffer, opts, callback) {
if (typeof opts === 'function') {
callback = opts;
opts = {};
}
return zlibBuffer(new DeflateRaw(opts), buffer, callback);
};
exports.deflateRawSync = function(buffer, opts) {
return zlibBufferSync(new DeflateRaw(opts), buffer);
};
exports.unzip = function(buffer, opts, callback) {
if (typeof opts === 'function') {
callback = opts;
opts = {};
}
return zlibBuffer(new Unzip(opts), buffer, callback);
};
exports.unzipSync = function(buffer, opts) {
return zlibBufferSync(new Unzip(opts), buffer);
};
exports.inflate = function(buffer, opts, callback) {
if (typeof opts === 'function') {
callback = opts;
opts = {};
}
return zlibBuffer(new Inflate(opts), buffer, callback);
};
exports.inflateSync = function(buffer, opts) {
return zlibBufferSync(new Inflate(opts), buffer);
};
exports.gunzip = function(buffer, opts, callback) {
if (typeof opts === 'function') {
callback = opts;
opts = {};
}
return zlibBuffer(new Gunzip(opts), buffer, callback);
};
exports.gunzipSync = function(buffer, opts) {
return zlibBufferSync(new Gunzip(opts), buffer);
};
exports.inflateRaw = function(buffer, opts, callback) {
if (typeof opts === 'function') {
callback = opts;
opts = {};
}
return zlibBuffer(new InflateRaw(opts), buffer, callback);
};
exports.inflateRawSync = function(buffer, opts) {
return zlibBufferSync(new InflateRaw(opts), buffer);
};
function zlibBuffer(engine, buffer, callback) {
var buffers = [];
var nread = 0;
engine.on('error', onError);
engine.on('end', onEnd);
engine.end(buffer);
flow();
function flow() {
var chunk;
while (null !== (chunk = engine.read())) {
buffers.push(chunk);
nread += chunk.length;
}
engine.once('readable', flow);
}
function onError(err) {
engine.removeListener('end', onEnd);
engine.removeListener('readable', flow);
callback(err);
}
function onEnd() {
var buf = Buffer.concat(buffers, nread);
buffers = [];
callback(null, buf);
engine.close();
}
}
function zlibBufferSync(engine, buffer) {
if (typeof buffer === 'string')
buffer = new Buffer(buffer);
if (!Buffer.isBuffer(buffer))
throw new TypeError('Not a string or buffer');
var flushFlag = binding.Z_FINISH;
return engine._processChunk(buffer, flushFlag);
}
// generic zlib
// minimal 2-byte header
function Deflate(opts) {
if (!(this instanceof Deflate)) return new Deflate(opts);
Zlib.call(this, opts, binding.DEFLATE);
}
function Inflate(opts) {
if (!(this instanceof Inflate)) return new Inflate(opts);
Zlib.call(this, opts, binding.INFLATE);
}
// gzip - bigger header, same deflate compression
function Gzip(opts) {
if (!(this instanceof Gzip)) return new Gzip(opts);
Zlib.call(this, opts, binding.GZIP);
}
function Gunzip(opts) {
if (!(this instanceof Gunzip)) return new Gunzip(opts);
Zlib.call(this, opts, binding.GUNZIP);
}
// raw - no header
function DeflateRaw(opts) {
if (!(this instanceof DeflateRaw)) return new DeflateRaw(opts);
Zlib.call(this, opts, binding.DEFLATERAW);
}
function InflateRaw(opts) {
if (!(this instanceof InflateRaw)) return new InflateRaw(opts);
Zlib.call(this, opts, binding.INFLATERAW);
}
// auto-detect header.
function Unzip(opts) {
if (!(this instanceof Unzip)) return new Unzip(opts);
Zlib.call(this, opts, binding.UNZIP);
}
// the Zlib class they all inherit from
// This thing manages the queue of requests, and returns
// true or false if there is anything in the queue when
// you call the .write() method.
function Zlib(opts, mode) {
this._opts = opts = opts || {};
this._chunkSize = opts.chunkSize || exports.Z_DEFAULT_CHUNK;
Transform.call(this, opts);
if (opts.flush) {
if (opts.flush !== binding.Z_NO_FLUSH &&
opts.flush !== binding.Z_PARTIAL_FLUSH &&
opts.flush !== binding.Z_SYNC_FLUSH &&
opts.flush !== binding.Z_FULL_FLUSH &&
opts.flush !== binding.Z_FINISH &&
opts.flush !== binding.Z_BLOCK) {
throw new Error('Invalid flush flag: ' + opts.flush);
}
}
this._flushFlag = opts.flush || binding.Z_NO_FLUSH;
if (opts.chunkSize) {
if (opts.chunkSize < exports.Z_MIN_CHUNK ||
opts.chunkSize > exports.Z_MAX_CHUNK) {
throw new Error('Invalid chunk size: ' + opts.chunkSize);
}
}
if (opts.windowBits) {
if (opts.windowBits < exports.Z_MIN_WINDOWBITS ||
opts.windowBits > exports.Z_MAX_WINDOWBITS) {
throw new Error('Invalid windowBits: ' + opts.windowBits);
}
}
if (opts.level) {
if (opts.level < exports.Z_MIN_LEVEL ||
opts.level > exports.Z_MAX_LEVEL) {
throw new Error('Invalid compression level: ' + opts.level);
}
}
if (opts.memLevel) {
if (opts.memLevel < exports.Z_MIN_MEMLEVEL ||
opts.memLevel > exports.Z_MAX_MEMLEVEL) {
throw new Error('Invalid memLevel: ' + opts.memLevel);
}
}
if (opts.strategy) {
if (opts.strategy != exports.Z_FILTERED &&
opts.strategy != exports.Z_HUFFMAN_ONLY &&
opts.strategy != exports.Z_RLE &&
opts.strategy != exports.Z_FIXED &&
opts.strategy != exports.Z_DEFAULT_STRATEGY) {
throw new Error('Invalid strategy: ' + opts.strategy);
}
}
if (opts.dictionary) {
if (!Buffer.isBuffer(opts.dictionary)) {
throw new Error('Invalid dictionary: it should be a Buffer instance');
}
}
this._binding = new binding.Zlib(mode);
var self = this;
this._hadError = false;
this._binding.onerror = function(message, errno) {
// there is no way to cleanly recover.
// continuing only obscures problems.
self._binding = null;
self._hadError = true;
var error = new Error(message);
error.errno = errno;
error.code = exports.codes[errno];
self.emit('error', error);
};
var level = exports.Z_DEFAULT_COMPRESSION;
if (typeof opts.level === 'number') level = opts.level;
var strategy = exports.Z_DEFAULT_STRATEGY;
if (typeof opts.strategy === 'number') strategy = opts.strategy;
this._binding.init(opts.windowBits || exports.Z_DEFAULT_WINDOWBITS,
level,
opts.memLevel || exports.Z_DEFAULT_MEMLEVEL,
strategy,
opts.dictionary);
this._buffer = new Buffer(this._chunkSize);
this._offset = 0;
this._closed = false;
this._level = level;
this._strategy = strategy;
this.once('end', this.close);
}
util.inherits(Zlib, Transform);
Zlib.prototype.params = function(level, strategy, callback) {
if (level < exports.Z_MIN_LEVEL ||
level > exports.Z_MAX_LEVEL) {
throw new RangeError('Invalid compression level: ' + level);
}
if (strategy != exports.Z_FILTERED &&
strategy != exports.Z_HUFFMAN_ONLY &&
strategy != exports.Z_RLE &&
strategy != exports.Z_FIXED &&
strategy != exports.Z_DEFAULT_STRATEGY) {
throw new TypeError('Invalid strategy: ' + strategy);
}
if (this._level !== level || this._strategy !== strategy) {
var self = this;
this.flush(binding.Z_SYNC_FLUSH, function() {
self._binding.params(level, strategy);
if (!self._hadError) {
self._level = level;
self._strategy = strategy;
if (callback) callback();
}
});
} else {
process.nextTick(callback);
}
};
Zlib.prototype.reset = function() {
return this._binding.reset();
};
// This is the _flush function called by the transform class,
// internally, when the last chunk has been written.
Zlib.prototype._flush = function(callback) {
this._transform(new Buffer(0), '', callback);
};
Zlib.prototype.flush = function(kind, callback) {
var ws = this._writableState;
if (typeof kind === 'function' || (kind === void 0 && !callback)) {
callback = kind;
kind = binding.Z_FULL_FLUSH;
}
if (ws.ended) {
if (callback)
process.nextTick(callback);
} else if (ws.ending) {
if (callback)
this.once('end', callback);
} else if (ws.needDrain) {
var self = this;
this.once('drain', function() {
self.flush(callback);
});
} else {
this._flushFlag = kind;
this.write(new Buffer(0), '', callback);
}
};
Zlib.prototype.close = function(callback) {
if (callback)
process.nextTick(callback);
if (this._closed)
return;
this._closed = true;
this._binding.close();
var self = this;
process.nextTick(function() {
self.emit('close');
});
};
Zlib.prototype._transform = function(chunk, encoding, cb) {
var flushFlag;
var ws = this._writableState;
var ending = ws.ending || ws.ended;
var last = ending && (!chunk || ws.length === chunk.length);
if (!chunk === null && !Buffer.isBuffer(chunk))
return cb(new Error('invalid input'));
// If it's the last chunk, or a final flush, we use the Z_FINISH flush flag.
// If it's explicitly flushing at some other time, then we use
// Z_FULL_FLUSH. Otherwise, use Z_NO_FLUSH for maximum compression
// goodness.
if (last)
flushFlag = binding.Z_FINISH;
else {
flushFlag = this._flushFlag;
// once we've flushed the last of the queue, stop flushing and
// go back to the normal behavior.
if (chunk.length >= ws.length) {
this._flushFlag = this._opts.flush || binding.Z_NO_FLUSH;
}
}
var self = this;
this._processChunk(chunk, flushFlag, cb);
};
Zlib.prototype._processChunk = function(chunk, flushFlag, cb) {
var availInBefore = chunk && chunk.length;
var availOutBefore = this._chunkSize - this._offset;
var inOff = 0;
var self = this;
var async = typeof cb === 'function';
if (!async) {
var buffers = [];
var nread = 0;
var error;
this.on('error', function(er) {
error = er;
});
do {
var res = this._binding.writeSync(flushFlag,
chunk, // in
inOff, // in_off
availInBefore, // in_len
this._buffer, // out
this._offset, //out_off
availOutBefore); // out_len
} while (!this._hadError && callback(res[0], res[1]));
if (this._hadError) {
throw error;
}
var buf = Buffer.concat(buffers, nread);
this.close();
return buf;
}
var req = this._binding.write(flushFlag,
chunk, // in
inOff, // in_off
availInBefore, // in_len
this._buffer, // out
this._offset, //out_off
availOutBefore); // out_len
req.buffer = chunk;
req.callback = callback;
function callback(availInAfter, availOutAfter) {
if (self._hadError)
return;
var have = availOutBefore - availOutAfter;
assert(have >= 0, 'have should not go down');
if (have > 0) {
var out = self._buffer.slice(self._offset, self._offset + have);
self._offset += have;
// serve some output to the consumer.
if (async) {
self.push(out);
} else {
buffers.push(out);
nread += out.length;
}
}
// exhausted the output buffer, or used all the input create a new one.
if (availOutAfter === 0 || self._offset >= self._chunkSize) {
availOutBefore = self._chunkSize;
self._offset = 0;
self._buffer = new Buffer(self._chunkSize);
}
if (availOutAfter === 0) {
// Not actually done. Need to reprocess.
// Also, update the availInBefore to the availInAfter value,
// so that if we have to hit it a third (fourth, etc.) time,
// it'll have the correct byte counts.
inOff += (availInBefore - availInAfter);
availInBefore = availInAfter;
if (!async)
return true;
var newReq = self._binding.write(flushFlag,
chunk,
inOff,
availInBefore,
self._buffer,
self._offset,
self._chunkSize);
newReq.callback = callback; // this same function
newReq.buffer = chunk;
return;
}
if (!async)
return false;
// finished with the chunk.
cb();
}
};
util.inherits(Deflate, Zlib);
util.inherits(Inflate, Zlib);
util.inherits(Gzip, Zlib);
util.inherits(Gunzip, Zlib);
util.inherits(DeflateRaw, Zlib);
util.inherits(InflateRaw, Zlib);
util.inherits(Unzip, Zlib);

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// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
var common = require('../common.js');
var assert = require('assert');
var zlib = require('zlib');
// Should raise an error, not trigger an assertion in src/node_zlib.cc
(function() {
var stream = zlib.createInflate();
stream.on('error', common.mustCall(function(err) {
assert(/Missing dictionary/.test(err.message));
}));
// String "test" encoded with dictionary "dict".
stream.write(Buffer([0x78,0xBB,0x04,0x09,0x01,0xA5]));
})();
// Should raise an error, not trigger an assertion in src/node_zlib.cc
(function() {
var stream = zlib.createInflate({ dictionary: Buffer('fail') });
stream.on('error', common.mustCall(function(err) {
assert(/Bad dictionary/.test(err.message));
}));
// String "test" encoded with dictionary "dict".
stream.write(Buffer([0x78,0xBB,0x04,0x09,0x01,0xA5]));
})();

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// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
// test compression/decompression with dictionary
var common = require('../common.js');
var assert = require('assert');
var zlib = require('zlib');
var path = require('path');
var spdyDict = new Buffer([
'optionsgetheadpostputdeletetraceacceptaccept-charsetaccept-encodingaccept-',
'languageauthorizationexpectfromhostif-modified-sinceif-matchif-none-matchi',
'f-rangeif-unmodifiedsincemax-forwardsproxy-authorizationrangerefererteuser',
'-agent10010120020120220320420520630030130230330430530630740040140240340440',
'5406407408409410411412413414415416417500501502503504505accept-rangesageeta',
'glocationproxy-authenticatepublicretry-afterservervarywarningwww-authentic',
'ateallowcontent-basecontent-encodingcache-controlconnectiondatetrailertran',
'sfer-encodingupgradeviawarningcontent-languagecontent-lengthcontent-locati',
'oncontent-md5content-rangecontent-typeetagexpireslast-modifiedset-cookieMo',
'ndayTuesdayWednesdayThursdayFridaySaturdaySundayJanFebMarAprMayJunJulAugSe',
'pOctNovDecchunkedtext/htmlimage/pngimage/jpgimage/gifapplication/xmlapplic',
'ation/xhtmltext/plainpublicmax-agecharset=iso-8859-1utf-8gzipdeflateHTTP/1',
'.1statusversionurl\0'
].join(''));
var deflate = zlib.createDeflate({ dictionary: spdyDict });
var input = [
'HTTP/1.1 200 Ok',
'Server: node.js',
'Content-Length: 0',
''
].join('\r\n');
var called = 0;
//
// We'll use clean-new inflate stream each time
// and .reset() old dirty deflate one
//
function run(num) {
var inflate = zlib.createInflate({ dictionary: spdyDict });
if (num === 2) {
deflate.reset();
deflate.removeAllListeners('data');
}
// Put data into deflate stream
deflate.on('data', function(chunk) {
inflate.write(chunk);
});
// Get data from inflate stream
var output = [];
inflate.on('data', function(chunk) {
output.push(chunk);
});
inflate.on('end', function() {
called++;
assert.equal(output.join(''), input);
if (num < 2) run(num + 1);
});
deflate.write(input);
deflate.flush(function() {
inflate.end();
});
}
run(1);
process.on('exit', function() {
assert.equal(called, 2);
});

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var common = require('../common.js');
var assert = require('assert');
var zlib = require('zlib');
var path = require('path');
var fs = require('fs');
var file = fs.readFileSync(path.resolve(common.fixturesDir, 'person.jpg')),
chunkSize = 24 * 1024,
opts = { level: 9, strategy: zlib.Z_DEFAULT_STRATEGY },
deflater = zlib.createDeflate(opts);
var chunk1 = file.slice(0, chunkSize),
chunk2 = file.slice(chunkSize),
blkhdr = new Buffer([0x00, 0x48, 0x82, 0xb7, 0x7d]),
expected = Buffer.concat([blkhdr, chunk2]),
actual;
deflater.write(chunk1, function() {
deflater.params(0, zlib.Z_DEFAULT_STRATEGY, function() {
while (deflater.read());
deflater.end(chunk2, function() {
var bufs = [], buf;
while (buf = deflater.read())
bufs.push(buf);
actual = Buffer.concat(bufs);
});
});
while (deflater.read());
});
process.once('exit', function() {
assert.deepEqual(actual, expected);
});

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{
"browserify": {
"transform": [
"brfs"
]
}
}

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// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
var tape = require('tape');
var zlib = require('../');
tape(function(t) {
t.plan(1);
zlib.gzip('hello', function(err, out) {
var unzip = zlib.createGunzip();
unzip.write(out);
unzip.close(function() {
t.ok(true);
});
});
});

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// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
// test convenience methods with and without options supplied
var tape = require('tape');
var zlib = require('../');
var expect = 'blahblahblahblahblahblah';
var opts = {
level: 9,
chunkSize: 1024,
};
[
['gzip', 'gunzip'],
['gzip', 'unzip'],
['deflate', 'inflate'],
['deflateRaw', 'inflateRaw'],
].forEach(function(method) {
tape(method.join(' '), function(t) {
t.plan(4);
zlib[method[0]](expect, opts, function(err, result) {
zlib[method[1]](result, opts, function(err, result) {
t.deepEqual(result, new Buffer(expect),
'Should get original string after ' +
method[0] + '/' + method[1] + ' with options.');
});
});
zlib[method[0]](expect, function(err, result) {
zlib[method[1]](result, function(err, result) {
t.deepEqual(result, new Buffer(expect),
'Should get original string after ' +
method[0] + '/' + method[1] + ' without options.');
});
});
var result = zlib[method[0] + 'Sync'](expect, opts);
result = zlib[method[1] + 'Sync'](result, opts);
t.deepEqual(result, new Buffer(expect),
'Should get original string after ' +
method[0] + '/' + method[1] + ' with options.');
result = zlib[method[0] + 'Sync'](expect);
result = zlib[method[1] + 'Sync'](result);
t.deepEqual(result, new Buffer(expect),
'Should get original string after ' +
method[0] + '/' + method[1] + ' without options.');
});
});

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// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
// test compressing and uncompressing a string with zlib
var tape = require('tape');
var zlib = require('../');
var inputString = '\u03A9\u03A9Lorem ipsum dolor sit amet, consectetur adipiscing el' +
'it. Morbi faucibus, purus at gravida dictum, libero arcu convallis la' +
'cus, in commodo libero metus eu nisi. Nullam commodo, neque nec porta' +
' placerat, nisi est fermentum augue, vitae gravida tellus sapien sit ' +
'amet tellus. Aenean non diam orci. Proin quis elit turpis. Suspendiss' +
'e non diam ipsum. Suspendisse nec ullamcorper odio. Vestibulum arcu m' +
'i, sodales non suscipit id, ultrices ut massa. Sed ac sem sit amet ar' +
'cu malesuada fermentum. Nunc sed. ';
var expectedBase64Deflate = 'eJxdUUtOQzEMvMoc4OndgT0gJCT2buJWlpI4jePeqZfpm' +
'XAKLRKbLOzx/HK73q6vOrhCunlF1qIDJhNUeW5I2ozT5OkDlKWLJWkncJG5403HQXAkT3' +
'Jw29B9uIEmToMukglZ0vS6ociBh4JG8sV4oVLEUCitK2kxq1WzPnChHDzsaGKy491Lofo' +
'AbWh8do43oeuYhB5EPCjcLjzYJo48KrfQBvnJecNFJvHT1+RSQsGoC7dn2t/xjhduTA1N' +
'WyQIZR0pbHwMDatnD+crPqKSqGPHp1vnlsWM/07ubf7bheF7kqSj84Bm0R1fYTfaK8vqq' +
'qfKBtNMhe3OZh6N95CTvMX5HJJi4xOVzCgUOIMSLH7wmeOHaFE4RdpnGavKtrB5xzfO/Ll9';
var expectedBase64Gzip = 'H4sIAAAAAAAAA11RS05DMQy8yhzg6d2BPSAkJPZu4laWkjiN' +
'496pl+mZcAotEpss7PH8crverq86uEK6eUXWogMmE1R5bkjajNPk6QOUpYslaSdwkbnjT' +
'cdBcCRPcnDb0H24gSZOgy6SCVnS9LqhyIGHgkbyxXihUsRQKK0raTGrVbM+cKEcPOxoYr' +
'Lj3Uuh+gBtaHx2jjeh65iEHkQ8KNwuPNgmjjwqt9AG+cl5w0Um8dPX5FJCwagLt2fa3/G' +
'OF25MDU1bJAhlHSlsfAwNq2cP5ys+opKoY8enW+eWxYz/Tu5t/tuF4XuSpKPzgGbRHV9h' +
'N9ory+qqp8oG00yF7c5mHo33kJO8xfkckmLjE5XMKBQ4gxIsfvCZ44doUThF2mcZq8q2s' +
'HnHNzRtagj5AQAA';
tape('deflate', function(t) {
t.plan(1);
zlib.deflate(inputString, function(err, buffer) {
t.equal(buffer.toString('base64'), expectedBase64Deflate,
'deflate encoded string should match');
});
});
tape('gzip', function(t) {
t.plan(1);
zlib.gzip(inputString, function(err, buffer) {
// Can't actually guarantee that we'll get exactly the same
// deflated bytes when we compress a string, since the header
// depends on stuff other than the input string itself.
// However, decrypting it should definitely yield the same
// result that we're expecting, and this should match what we get
// from inflating the known valid deflate data.
zlib.gunzip(buffer, function(err, gunzipped) {
t.equal(gunzipped.toString(), inputString,
'Should get original string after gzip/gunzip');
});
});
});
tape('unzip deflate', function(t) {
t.plan(1);
var buffer = new Buffer(expectedBase64Deflate, 'base64');
zlib.unzip(buffer, function(err, buffer) {
t.equal(buffer.toString(), inputString,
'decoded inflated string should match');
});
});
tape('unzip gzip', function(t) {
t.plan(1);
buffer = new Buffer(expectedBase64Gzip, 'base64');
zlib.unzip(buffer, function(err, buffer) {
t.equal(buffer.toString(), inputString,
'decoded gunzipped string should match');
});
});

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// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
// test uncompressing invalid input
var tape = require('tape'),
zlib = require('../');
tape('non-strings', function(t) {
var nonStringInputs = [1, true, {a: 1}, ['a']];
t.plan(12);
nonStringInputs.forEach(function(input) {
// zlib.gunzip should not throw an error when called with bad input.
t.doesNotThrow(function() {
zlib.gunzip(input, function(err, buffer) {
// zlib.gunzip should pass the error to the callback.
t.ok(err);
});
});
});
});
tape('unzips', function(t) {
// zlib.Unzip classes need to get valid data, or else they'll throw.
var unzips = [ zlib.Unzip(),
zlib.Gunzip(),
zlib.Inflate(),
zlib.InflateRaw() ];
t.plan(4);
unzips.forEach(function (uz, i) {
uz.on('error', function(er) {
t.ok(er);
});
uz.on('end', function(er) {
throw new Error('end event should not be emitted '+uz.constructor.name);
});
// this will trigger error event
uz.write('this is not valid compressed data.');
});
});

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// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
var crypto = require('crypto');
var stream = require('stream');
var Stream = stream.Stream;
var util = require('util');
var tape = require('tape');
var zlib = require('../');
// emit random bytes, and keep a shasum
function RandomReadStream(opt) {
Stream.call(this);
this.readable = true;
this._paused = false;
this._processing = false;
this._hasher = crypto.createHash('sha1');
opt = opt || {};
// base block size.
opt.block = opt.block || 256 * 1024;
// total number of bytes to emit
opt.total = opt.total || 256 * 1024 * 1024;
this._remaining = opt.total;
// how variable to make the block sizes
opt.jitter = opt.jitter || 1024;
this._opt = opt;
this._process = this._process.bind(this);
process.nextTick(this._process);
}
util.inherits(RandomReadStream, Stream);
RandomReadStream.prototype.pause = function() {
this._paused = true;
this.emit('pause');
};
RandomReadStream.prototype.resume = function() {
this._paused = false;
this.emit('resume');
this._process();
};
RandomReadStream.prototype._process = function() {
if (this._processing) return;
if (this._paused) return;
this._processing = true;
if (!this._remaining) {
this._hash = this._hasher.digest('hex').toLowerCase().trim();
this._processing = false;
this.emit('end');
return;
}
// figure out how many bytes to output
// if finished, then just emit end.
var block = this._opt.block;
var jitter = this._opt.jitter;
if (jitter) {
block += Math.ceil(Math.random() * jitter - (jitter / 2));
}
block = Math.min(block, this._remaining);
var buf = new Buffer(block);
for (var i = 0; i < block; i++) {
buf[i] = Math.random() * 256;
}
this._hasher.update(buf);
this._remaining -= block;
this._processing = false;
this.emit('data', buf);
process.nextTick(this._process);
};
// a filter that just verifies a shasum
function HashStream() {
Stream.call(this);
this.readable = this.writable = true;
this._hasher = crypto.createHash('sha1');
}
util.inherits(HashStream, Stream);
HashStream.prototype.write = function(c) {
// Simulate the way that an fs.ReadStream returns false
// on *every* write like a jerk, only to resume a
// moment later.
this._hasher.update(c);
process.nextTick(this.resume.bind(this));
return false;
};
HashStream.prototype.resume = function() {
this.emit('resume');
process.nextTick(this.emit.bind(this, 'drain'));
};
HashStream.prototype.end = function(c) {
if (c) {
this.write(c);
}
this._hash = this._hasher.digest('hex').toLowerCase().trim();
this.emit('data', this._hash);
this.emit('end');
};
tape('random byte pipes', function(t) {
var inp = new RandomReadStream({ total: 1024, block: 256, jitter: 16 });
var out = new HashStream();
var gzip = zlib.createGzip();
var gunz = zlib.createGunzip();
inp.pipe(gzip).pipe(gunz).pipe(out);
inp.on('data', function(c) {
t.ok(c.length);
});
gzip.on('data', function(c) {
t.ok(c.length);
});
gunz.on('data', function(c) {
t.ok(c.length);
});
out.on('data', function(c) {
t.ok(c.length);
});
out.on('data', function(c) {
t.ok(c.length);
t.equal(c, inp._hash, 'hashes should match');
});
out.on('end', function() {
t.end();
})
});

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// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
var tape = require('tape');
var zlib = require('../');
var fs = require('fs');
tape('write after flush', function(t) {
t.plan(2);
var gzip = zlib.createGzip();
var gunz = zlib.createUnzip();
gzip.pipe(gunz);
var output = '';
var input = 'A line of data\n';
gunz.setEncoding('utf8');
gunz.on('data', function(c) {
output += c;
});
gunz.on('end', function() {
t.equal(output, input);
// Make sure that the flush flag was set back to normal
t.equal(gzip._flushFlag, zlib.Z_NO_FLUSH);
});
// make sure that flush/write doesn't trigger an assert failure
gzip.flush(); write();
function write() {
gzip.write(input);
gzip.end();
gunz.read(0);
}
});

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// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
var tape = require('tape');
var zlib = require('../');
tape('zero byte', function(t) {
t.plan(2);
var gz = zlib.Gzip()
var emptyBuffer = new Buffer(0);
var received = 0;
gz.on('data', function(c) {
received += c.length;
});
gz.on('end', function() {
t.equal(received, 20);
});
gz.on('finish', function() {
t.ok(true);
});
gz.write(emptyBuffer);
gz.end();
});

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@@ -0,0 +1,206 @@
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
var assert = require('assert');
var zlib = require('../');
var path = require('path');
var zlibPairs =
[[zlib.Deflate, zlib.Inflate],
[zlib.Gzip, zlib.Gunzip],
[zlib.Deflate, zlib.Unzip],
[zlib.Gzip, zlib.Unzip],
[zlib.DeflateRaw, zlib.InflateRaw]];
// how fast to trickle through the slowstream
var trickle = [128, 1024, 1024 * 1024];
// tunable options for zlib classes.
// several different chunk sizes
var chunkSize = [128, 1024, 1024 * 16, 1024 * 1024];
// this is every possible value.
var level = [-1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9];
var windowBits = [8, 9, 10, 11, 12, 13, 14, 15];
var memLevel = [1, 2, 3, 4, 5, 6, 7, 8, 9];
var strategy = [0, 1, 2, 3, 4];
// it's nice in theory to test every combination, but it
// takes WAY too long. Maybe a pummel test could do this?
if (!process.env.PUMMEL) {
trickle = [1024];
chunkSize = [1024 * 16];
level = [6];
memLevel = [8];
windowBits = [15];
strategy = [0];
}
var fs = require('fs');
if (process.env.FAST) {
zlibPairs = [[zlib.Gzip, zlib.Unzip]];
}
var tests = {
'person.jpg': fs.readFileSync(__dirname + '/fixtures/person.jpg'),
'elipses.txt': fs.readFileSync(__dirname + '/fixtures/elipses.txt'),
'empty.txt': fs.readFileSync(__dirname + '/fixtures/empty.txt')
};
var util = require('util');
var stream = require('stream');
// stream that saves everything
function BufferStream() {
this.chunks = [];
this.length = 0;
this.writable = true;
this.readable = true;
}
util.inherits(BufferStream, stream.Stream);
BufferStream.prototype.write = function(c) {
this.chunks.push(c);
this.length += c.length;
return true;
};
BufferStream.prototype.end = function(c) {
if (c) this.write(c);
// flatten
var buf = new Buffer(this.length);
var i = 0;
this.chunks.forEach(function(c) {
c.copy(buf, i);
i += c.length;
});
this.emit('data', buf);
this.emit('end');
return true;
};
function SlowStream(trickle) {
this.trickle = trickle;
this.offset = 0;
this.readable = this.writable = true;
}
util.inherits(SlowStream, stream.Stream);
SlowStream.prototype.write = function() {
throw new Error('not implemented, just call ss.end(chunk)');
};
SlowStream.prototype.pause = function() {
this.paused = true;
this.emit('pause');
};
SlowStream.prototype.resume = function() {
var self = this;
if (self.ended) return;
self.emit('resume');
if (!self.chunk) return;
self.paused = false;
emit();
function emit() {
if (self.paused) return;
if (self.offset >= self.length) {
self.ended = true;
return self.emit('end');
}
var end = Math.min(self.offset + self.trickle, self.length);
var c = self.chunk.slice(self.offset, end);
self.offset += c.length;
self.emit('data', c);
process.nextTick(emit);
}
};
SlowStream.prototype.end = function(chunk) {
// walk over the chunk in blocks.
var self = this;
self.chunk = chunk;
self.length = chunk.length;
self.resume();
return self.ended;
};
// for each of the files, make sure that compressing and
// decompressing results in the same data, for every combination
// of the options set above.
var tape = require('tape');
Object.keys(tests).forEach(function(file) {
var test = tests[file];
chunkSize.forEach(function(chunkSize) {
trickle.forEach(function(trickle) {
windowBits.forEach(function(windowBits) {
level.forEach(function(level) {
memLevel.forEach(function(memLevel) {
strategy.forEach(function(strategy) {
zlibPairs.forEach(function(pair) {
var Def = pair[0];
var Inf = pair[1];
var opts = {
level: level,
windowBits: windowBits,
memLevel: memLevel,
strategy: strategy
};
var msg = file + ' ' +
chunkSize + ' ' +
JSON.stringify(opts) + ' ' +
Def.name + ' -> ' + Inf.name;
tape('zlib ' + msg, function(t) {
t.plan(1);
var def = new Def(opts);
var inf = new Inf(opts);
var ss = new SlowStream(trickle);
var buf = new BufferStream();
// verify that the same exact buffer comes out the other end.
buf.on('data', function(c) {
t.deepEqual(c, test);
});
// the magic happens here.
ss.pipe(def).pipe(inf).pipe(buf);
ss.end(test);
});
});
});
});
});
});
});
});
});