// 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(); }) });
# | Change | User | Description | Committed | |
---|---|---|---|---|---|
#1 | 19553 | swellard | Move and rename clients | ||
//guest/perforce_software/helix-web-services/main/source/clients/2016.1.0/javascript/node_modules/browserify-zlib/test/test-zlib-random-byte-pipes.js | |||||
#1 | 18810 | tjuricek |
First-pass at JavaScript client SDK. JavaScript requires Node with Gulp to "browserfy" the library. It's the easiest way I found to use the swagger-js project; bundle up a wrapping method. There is no JavaScript reference guide. The swagger-js doesn't really document what they do very well, actually. Overall I'm not particularly impressed by swagger-js, it was hard to even figure out what the right method syntax was. We may want to invest time in doing it better. This required setting CORS response headers, which are currently defaulted to a fairly insecure setting. |