1572 lines
40 KiB
HTML
1572 lines
40 KiB
HTML
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<script>
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/*! binary.js build:0.2.2, development. Copyright(c) 2012 Eric Zhang <eric@ericzhang.com> MIT Licensed */
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(function(exports){
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/*! binarypack.js build:0.0.9, production. Copyright(c) 2012 Eric Zhang <eric@ericzhang.com> MIT Licensed */(function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
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var BufferBuilder = require('./bufferbuilder').BufferBuilder;
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var binaryFeatures = require('./bufferbuilder').binaryFeatures;
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var BinaryPack = {
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unpack: function(data){
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var unpacker = new Unpacker(data);
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return unpacker.unpack();
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},
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pack: function(data){
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var packer = new Packer();
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packer.pack(data);
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var buffer = packer.getBuffer();
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return buffer;
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}
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};
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module.exports = BinaryPack;
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function Unpacker (data){
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// Data is ArrayBuffer
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this.index = 0;
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this.dataBuffer = data;
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this.dataView = new Uint8Array(this.dataBuffer);
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this.length = this.dataBuffer.byteLength;
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}
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Unpacker.prototype.unpack = function(){
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var type = this.unpack_uint8();
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if (type < 0x80){
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var positive_fixnum = type;
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return positive_fixnum;
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} else if ((type ^ 0xe0) < 0x20){
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var negative_fixnum = (type ^ 0xe0) - 0x20;
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return negative_fixnum;
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}
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var size;
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if ((size = type ^ 0xa0) <= 0x0f){
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return this.unpack_raw(size);
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} else if ((size = type ^ 0xb0) <= 0x0f){
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return this.unpack_string(size);
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} else if ((size = type ^ 0x90) <= 0x0f){
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return this.unpack_array(size);
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} else if ((size = type ^ 0x80) <= 0x0f){
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return this.unpack_map(size);
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}
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switch(type){
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case 0xc0:
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return null;
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case 0xc1:
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return undefined;
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case 0xc2:
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return false;
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case 0xc3:
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return true;
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case 0xca:
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return this.unpack_float();
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case 0xcb:
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return this.unpack_double();
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case 0xcc:
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return this.unpack_uint8();
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case 0xcd:
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return this.unpack_uint16();
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case 0xce:
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return this.unpack_uint32();
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case 0xcf:
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return this.unpack_uint64();
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case 0xd0:
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return this.unpack_int8();
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case 0xd1:
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return this.unpack_int16();
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case 0xd2:
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return this.unpack_int32();
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case 0xd3:
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return this.unpack_int64();
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case 0xd4:
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return undefined;
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case 0xd5:
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return undefined;
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case 0xd6:
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return undefined;
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case 0xd7:
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return undefined;
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case 0xd8:
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size = this.unpack_uint16();
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return this.unpack_string(size);
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case 0xd9:
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size = this.unpack_uint32();
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return this.unpack_string(size);
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case 0xda:
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size = this.unpack_uint16();
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return this.unpack_raw(size);
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case 0xdb:
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size = this.unpack_uint32();
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return this.unpack_raw(size);
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case 0xdc:
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size = this.unpack_uint16();
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return this.unpack_array(size);
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case 0xdd:
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size = this.unpack_uint32();
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return this.unpack_array(size);
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case 0xde:
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size = this.unpack_uint16();
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return this.unpack_map(size);
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case 0xdf:
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size = this.unpack_uint32();
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return this.unpack_map(size);
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}
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}
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Unpacker.prototype.unpack_uint8 = function(){
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var byte = this.dataView[this.index] & 0xff;
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this.index++;
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return byte;
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};
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Unpacker.prototype.unpack_uint16 = function(){
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var bytes = this.read(2);
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var uint16 =
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((bytes[0] & 0xff) * 256) + (bytes[1] & 0xff);
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this.index += 2;
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return uint16;
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}
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Unpacker.prototype.unpack_uint32 = function(){
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var bytes = this.read(4);
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var uint32 =
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((bytes[0] * 256 +
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bytes[1]) * 256 +
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bytes[2]) * 256 +
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bytes[3];
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this.index += 4;
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return uint32;
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}
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Unpacker.prototype.unpack_uint64 = function(){
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var bytes = this.read(8);
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var uint64 =
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((((((bytes[0] * 256 +
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bytes[1]) * 256 +
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bytes[2]) * 256 +
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bytes[3]) * 256 +
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bytes[4]) * 256 +
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bytes[5]) * 256 +
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bytes[6]) * 256 +
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bytes[7];
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this.index += 8;
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return uint64;
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}
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Unpacker.prototype.unpack_int8 = function(){
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var uint8 = this.unpack_uint8();
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return (uint8 < 0x80 ) ? uint8 : uint8 - (1 << 8);
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};
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Unpacker.prototype.unpack_int16 = function(){
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var uint16 = this.unpack_uint16();
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return (uint16 < 0x8000 ) ? uint16 : uint16 - (1 << 16);
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}
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Unpacker.prototype.unpack_int32 = function(){
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var uint32 = this.unpack_uint32();
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return (uint32 < Math.pow(2, 31) ) ? uint32 :
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uint32 - Math.pow(2, 32);
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}
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Unpacker.prototype.unpack_int64 = function(){
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var uint64 = this.unpack_uint64();
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return (uint64 < Math.pow(2, 63) ) ? uint64 :
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uint64 - Math.pow(2, 64);
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}
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Unpacker.prototype.unpack_raw = function(size){
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if ( this.length < this.index + size){
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throw new Error('BinaryPackFailure: index is out of range'
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+ ' ' + this.index + ' ' + size + ' ' + this.length);
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}
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var buf = this.dataBuffer.slice(this.index, this.index + size);
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this.index += size;
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//buf = util.bufferToString(buf);
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return buf;
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}
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Unpacker.prototype.unpack_string = function(size){
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var bytes = this.read(size);
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var i = 0, str = '', c, code;
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while(i < size){
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c = bytes[i];
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if ( c < 128){
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str += String.fromCharCode(c);
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i++;
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} else if ((c ^ 0xc0) < 32){
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code = ((c ^ 0xc0) << 6) | (bytes[i+1] & 63);
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str += String.fromCharCode(code);
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i += 2;
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} else {
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code = ((c & 15) << 12) | ((bytes[i+1] & 63) << 6) |
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(bytes[i+2] & 63);
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str += String.fromCharCode(code);
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i += 3;
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}
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}
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this.index += size;
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return str;
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}
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Unpacker.prototype.unpack_array = function(size){
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var objects = new Array(size);
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for(var i = 0; i < size ; i++){
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objects[i] = this.unpack();
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}
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return objects;
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}
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Unpacker.prototype.unpack_map = function(size){
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var map = {};
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for(var i = 0; i < size ; i++){
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var key = this.unpack();
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var value = this.unpack();
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map[key] = value;
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}
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return map;
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}
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Unpacker.prototype.unpack_float = function(){
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var uint32 = this.unpack_uint32();
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var sign = uint32 >> 31;
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var exp = ((uint32 >> 23) & 0xff) - 127;
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var fraction = ( uint32 & 0x7fffff ) | 0x800000;
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return (sign == 0 ? 1 : -1) *
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fraction * Math.pow(2, exp - 23);
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}
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Unpacker.prototype.unpack_double = function(){
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var h32 = this.unpack_uint32();
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var l32 = this.unpack_uint32();
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var sign = h32 >> 31;
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var exp = ((h32 >> 20) & 0x7ff) - 1023;
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var hfrac = ( h32 & 0xfffff ) | 0x100000;
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var frac = hfrac * Math.pow(2, exp - 20) +
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l32 * Math.pow(2, exp - 52);
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return (sign == 0 ? 1 : -1) * frac;
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}
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Unpacker.prototype.read = function(length){
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var j = this.index;
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if (j + length <= this.length) {
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return this.dataView.subarray(j, j + length);
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} else {
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throw new Error('BinaryPackFailure: read index out of range');
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}
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}
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function Packer(){
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this.bufferBuilder = new BufferBuilder();
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}
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Packer.prototype.getBuffer = function(){
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return this.bufferBuilder.getBuffer();
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}
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Packer.prototype.pack = function(value){
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var type = typeof(value);
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if (type == 'string'){
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this.pack_string(value);
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} else if (type == 'number'){
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if (Math.floor(value) === value){
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this.pack_integer(value);
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} else{
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this.pack_double(value);
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}
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} else if (type == 'boolean'){
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if (value === true){
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this.bufferBuilder.append(0xc3);
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} else if (value === false){
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this.bufferBuilder.append(0xc2);
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}
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} else if (type == 'undefined'){
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this.bufferBuilder.append(0xc0);
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} else if (type == 'object'){
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if (value === null){
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this.bufferBuilder.append(0xc0);
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} else {
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var constructor = value.constructor;
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if (constructor == Array){
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this.pack_array(value);
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} else if (constructor == Blob || constructor == File) {
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this.pack_bin(value);
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} else if (constructor == ArrayBuffer) {
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if(binaryFeatures.useArrayBufferView) {
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this.pack_bin(new Uint8Array(value));
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} else {
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this.pack_bin(value);
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}
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} else if ('BYTES_PER_ELEMENT' in value){
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if(binaryFeatures.useArrayBufferView) {
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this.pack_bin(new Uint8Array(value.buffer));
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} else {
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this.pack_bin(value.buffer);
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}
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} else if (constructor == Object){
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this.pack_object(value);
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} else if (constructor == Date){
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this.pack_string(value.toString());
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} else if (typeof value.toBinaryPack == 'function'){
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this.bufferBuilder.append(value.toBinaryPack());
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} else {
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throw new Error('Type "' + constructor.toString() + '" not yet supported');
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}
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}
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} else {
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throw new Error('Type "' + type + '" not yet supported');
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}
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this.bufferBuilder.flush();
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}
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Packer.prototype.pack_bin = function(blob){
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var length = blob.length || blob.byteLength || blob.size;
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if (length <= 0x0f){
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this.pack_uint8(0xa0 + length);
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} else if (length <= 0xffff){
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this.bufferBuilder.append(0xda) ;
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this.pack_uint16(length);
|
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} else if (length <= 0xffffffff){
|
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this.bufferBuilder.append(0xdb);
|
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this.pack_uint32(length);
|
||
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} else{
|
||
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throw new Error('Invalid length');
|
||
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}
|
||
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this.bufferBuilder.append(blob);
|
||
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}
|
||
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Packer.prototype.pack_string = function(str){
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var length = utf8Length(str);
|
||
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|
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if (length <= 0x0f){
|
||
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this.pack_uint8(0xb0 + length);
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||
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} else if (length <= 0xffff){
|
||
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this.bufferBuilder.append(0xd8) ;
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this.pack_uint16(length);
|
||
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} else if (length <= 0xffffffff){
|
||
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this.bufferBuilder.append(0xd9);
|
||
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this.pack_uint32(length);
|
||
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} else{
|
||
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throw new Error('Invalid length');
|
||
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}
|
||
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this.bufferBuilder.append(str);
|
||
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}
|
||
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Packer.prototype.pack_array = function(ary){
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var length = ary.length;
|
||
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if (length <= 0x0f){
|
||
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this.pack_uint8(0x90 + length);
|
||
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} else if (length <= 0xffff){
|
||
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this.bufferBuilder.append(0xdc)
|
||
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this.pack_uint16(length);
|
||
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} else if (length <= 0xffffffff){
|
||
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this.bufferBuilder.append(0xdd);
|
||
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this.pack_uint32(length);
|
||
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} else{
|
||
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throw new Error('Invalid length');
|
||
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}
|
||
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for(var i = 0; i < length ; i++){
|
||
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|
this.pack(ary[i]);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
Packer.prototype.pack_integer = function(num){
|
||
|
|
if ( -0x20 <= num && num <= 0x7f){
|
||
|
|
this.bufferBuilder.append(num & 0xff);
|
||
|
|
} else if (0x00 <= num && num <= 0xff){
|
||
|
|
this.bufferBuilder.append(0xcc);
|
||
|
|
this.pack_uint8(num);
|
||
|
|
} else if (-0x80 <= num && num <= 0x7f){
|
||
|
|
this.bufferBuilder.append(0xd0);
|
||
|
|
this.pack_int8(num);
|
||
|
|
} else if ( 0x0000 <= num && num <= 0xffff){
|
||
|
|
this.bufferBuilder.append(0xcd);
|
||
|
|
this.pack_uint16(num);
|
||
|
|
} else if (-0x8000 <= num && num <= 0x7fff){
|
||
|
|
this.bufferBuilder.append(0xd1);
|
||
|
|
this.pack_int16(num);
|
||
|
|
} else if ( 0x00000000 <= num && num <= 0xffffffff){
|
||
|
|
this.bufferBuilder.append(0xce);
|
||
|
|
this.pack_uint32(num);
|
||
|
|
} else if (-0x80000000 <= num && num <= 0x7fffffff){
|
||
|
|
this.bufferBuilder.append(0xd2);
|
||
|
|
this.pack_int32(num);
|
||
|
|
} else if (-0x8000000000000000 <= num && num <= 0x7FFFFFFFFFFFFFFF){
|
||
|
|
this.bufferBuilder.append(0xd3);
|
||
|
|
this.pack_int64(num);
|
||
|
|
} else if (0x0000000000000000 <= num && num <= 0xFFFFFFFFFFFFFFFF){
|
||
|
|
this.bufferBuilder.append(0xcf);
|
||
|
|
this.pack_uint64(num);
|
||
|
|
} else{
|
||
|
|
throw new Error('Invalid integer');
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
Packer.prototype.pack_double = function(num){
|
||
|
|
var sign = 0;
|
||
|
|
if (num < 0){
|
||
|
|
sign = 1;
|
||
|
|
num = -num;
|
||
|
|
}
|
||
|
|
var exp = Math.floor(Math.log(num) / Math.LN2);
|
||
|
|
var frac0 = num / Math.pow(2, exp) - 1;
|
||
|
|
var frac1 = Math.floor(frac0 * Math.pow(2, 52));
|
||
|
|
var b32 = Math.pow(2, 32);
|
||
|
|
var h32 = (sign << 31) | ((exp+1023) << 20) |
|
||
|
|
(frac1 / b32) & 0x0fffff;
|
||
|
|
var l32 = frac1 % b32;
|
||
|
|
this.bufferBuilder.append(0xcb);
|
||
|
|
this.pack_int32(h32);
|
||
|
|
this.pack_int32(l32);
|
||
|
|
}
|
||
|
|
|
||
|
|
Packer.prototype.pack_object = function(obj){
|
||
|
|
var keys = Object.keys(obj);
|
||
|
|
var length = keys.length;
|
||
|
|
if (length <= 0x0f){
|
||
|
|
this.pack_uint8(0x80 + length);
|
||
|
|
} else if (length <= 0xffff){
|
||
|
|
this.bufferBuilder.append(0xde);
|
||
|
|
this.pack_uint16(length);
|
||
|
|
} else if (length <= 0xffffffff){
|
||
|
|
this.bufferBuilder.append(0xdf);
|
||
|
|
this.pack_uint32(length);
|
||
|
|
} else{
|
||
|
|
throw new Error('Invalid length');
|
||
|
|
}
|
||
|
|
for(var prop in obj){
|
||
|
|
if (obj.hasOwnProperty(prop)){
|
||
|
|
this.pack(prop);
|
||
|
|
this.pack(obj[prop]);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
Packer.prototype.pack_uint8 = function(num){
|
||
|
|
this.bufferBuilder.append(num);
|
||
|
|
}
|
||
|
|
|
||
|
|
Packer.prototype.pack_uint16 = function(num){
|
||
|
|
this.bufferBuilder.append(num >> 8);
|
||
|
|
this.bufferBuilder.append(num & 0xff);
|
||
|
|
}
|
||
|
|
|
||
|
|
Packer.prototype.pack_uint32 = function(num){
|
||
|
|
var n = num & 0xffffffff;
|
||
|
|
this.bufferBuilder.append((n & 0xff000000) >>> 24);
|
||
|
|
this.bufferBuilder.append((n & 0x00ff0000) >>> 16);
|
||
|
|
this.bufferBuilder.append((n & 0x0000ff00) >>> 8);
|
||
|
|
this.bufferBuilder.append((n & 0x000000ff));
|
||
|
|
}
|
||
|
|
|
||
|
|
Packer.prototype.pack_uint64 = function(num){
|
||
|
|
var high = num / Math.pow(2, 32);
|
||
|
|
var low = num % Math.pow(2, 32);
|
||
|
|
this.bufferBuilder.append((high & 0xff000000) >>> 24);
|
||
|
|
this.bufferBuilder.append((high & 0x00ff0000) >>> 16);
|
||
|
|
this.bufferBuilder.append((high & 0x0000ff00) >>> 8);
|
||
|
|
this.bufferBuilder.append((high & 0x000000ff));
|
||
|
|
this.bufferBuilder.append((low & 0xff000000) >>> 24);
|
||
|
|
this.bufferBuilder.append((low & 0x00ff0000) >>> 16);
|
||
|
|
this.bufferBuilder.append((low & 0x0000ff00) >>> 8);
|
||
|
|
this.bufferBuilder.append((low & 0x000000ff));
|
||
|
|
}
|
||
|
|
|
||
|
|
Packer.prototype.pack_int8 = function(num){
|
||
|
|
this.bufferBuilder.append(num & 0xff);
|
||
|
|
}
|
||
|
|
|
||
|
|
Packer.prototype.pack_int16 = function(num){
|
||
|
|
this.bufferBuilder.append((num & 0xff00) >> 8);
|
||
|
|
this.bufferBuilder.append(num & 0xff);
|
||
|
|
}
|
||
|
|
|
||
|
|
Packer.prototype.pack_int32 = function(num){
|
||
|
|
this.bufferBuilder.append((num >>> 24) & 0xff);
|
||
|
|
this.bufferBuilder.append((num & 0x00ff0000) >>> 16);
|
||
|
|
this.bufferBuilder.append((num & 0x0000ff00) >>> 8);
|
||
|
|
this.bufferBuilder.append((num & 0x000000ff));
|
||
|
|
}
|
||
|
|
|
||
|
|
Packer.prototype.pack_int64 = function(num){
|
||
|
|
var high = Math.floor(num / Math.pow(2, 32));
|
||
|
|
var low = num % Math.pow(2, 32);
|
||
|
|
this.bufferBuilder.append((high & 0xff000000) >>> 24);
|
||
|
|
this.bufferBuilder.append((high & 0x00ff0000) >>> 16);
|
||
|
|
this.bufferBuilder.append((high & 0x0000ff00) >>> 8);
|
||
|
|
this.bufferBuilder.append((high & 0x000000ff));
|
||
|
|
this.bufferBuilder.append((low & 0xff000000) >>> 24);
|
||
|
|
this.bufferBuilder.append((low & 0x00ff0000) >>> 16);
|
||
|
|
this.bufferBuilder.append((low & 0x0000ff00) >>> 8);
|
||
|
|
this.bufferBuilder.append((low & 0x000000ff));
|
||
|
|
}
|
||
|
|
|
||
|
|
function _utf8Replace(m){
|
||
|
|
var code = m.charCodeAt(0);
|
||
|
|
|
||
|
|
if(code <= 0x7ff) return '00';
|
||
|
|
if(code <= 0xffff) return '000';
|
||
|
|
if(code <= 0x1fffff) return '0000';
|
||
|
|
if(code <= 0x3ffffff) return '00000';
|
||
|
|
return '000000';
|
||
|
|
}
|
||
|
|
|
||
|
|
function utf8Length(str){
|
||
|
|
if (str.length > 600) {
|
||
|
|
// Blob method faster for large strings
|
||
|
|
return (new Blob([str])).size;
|
||
|
|
} else {
|
||
|
|
return str.replace(/[^\u0000-\u007F]/g, _utf8Replace).length;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
},{"./bufferbuilder":2}],2:[function(require,module,exports){
|
||
|
|
var binaryFeatures = {};
|
||
|
|
binaryFeatures.useBlobBuilder = (function(){
|
||
|
|
try {
|
||
|
|
new Blob([]);
|
||
|
|
return false;
|
||
|
|
} catch (e) {
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
})();
|
||
|
|
|
||
|
|
binaryFeatures.useArrayBufferView = !binaryFeatures.useBlobBuilder && (function(){
|
||
|
|
try {
|
||
|
|
return (new Blob([new Uint8Array([])])).size === 0;
|
||
|
|
} catch (e) {
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
})();
|
||
|
|
|
||
|
|
module.exports.binaryFeatures = binaryFeatures;
|
||
|
|
var BlobBuilder = module.exports.BlobBuilder;
|
||
|
|
if (typeof window != 'undefined') {
|
||
|
|
BlobBuilder = module.exports.BlobBuilder = window.WebKitBlobBuilder ||
|
||
|
|
window.MozBlobBuilder || window.MSBlobBuilder || window.BlobBuilder;
|
||
|
|
}
|
||
|
|
|
||
|
|
function BufferBuilder(){
|
||
|
|
this._pieces = [];
|
||
|
|
this._parts = [];
|
||
|
|
}
|
||
|
|
|
||
|
|
BufferBuilder.prototype.append = function(data) {
|
||
|
|
if(typeof data === 'number') {
|
||
|
|
this._pieces.push(data);
|
||
|
|
} else {
|
||
|
|
this.flush();
|
||
|
|
this._parts.push(data);
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
BufferBuilder.prototype.flush = function() {
|
||
|
|
if (this._pieces.length > 0) {
|
||
|
|
var buf = new Uint8Array(this._pieces);
|
||
|
|
if(!binaryFeatures.useArrayBufferView) {
|
||
|
|
buf = buf.buffer;
|
||
|
|
}
|
||
|
|
this._parts.push(buf);
|
||
|
|
this._pieces = [];
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
BufferBuilder.prototype.getBuffer = function() {
|
||
|
|
this.flush();
|
||
|
|
if(binaryFeatures.useBlobBuilder) {
|
||
|
|
var builder = new BlobBuilder();
|
||
|
|
for(var i = 0, ii = this._parts.length; i < ii; i++) {
|
||
|
|
builder.append(this._parts[i]);
|
||
|
|
}
|
||
|
|
return builder.getBlob();
|
||
|
|
} else {
|
||
|
|
return new Blob(this._parts);
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
module.exports.BufferBuilder = BufferBuilder;
|
||
|
|
|
||
|
|
},{}],3:[function(require,module,exports){
|
||
|
|
var BufferBuilderExports = require('./bufferbuilder');
|
||
|
|
|
||
|
|
window.BufferBuilder = BufferBuilderExports.BufferBuilder;
|
||
|
|
window.binaryFeatures = BufferBuilderExports.binaryFeatures;
|
||
|
|
window.BlobBuilder = BufferBuilderExports.BlobBuilder;
|
||
|
|
window.BinaryPack = require('./binarypack');
|
||
|
|
|
||
|
|
},{"./binarypack":1,"./bufferbuilder":2}]},{},[3]);
|
||
|
|
/**
|
||
|
|
* Light EventEmitter. Ported from Node.js/events.js
|
||
|
|
* Eric Zhang
|
||
|
|
*/
|
||
|
|
|
||
|
|
/**
|
||
|
|
* EventEmitter class
|
||
|
|
* Creates an object with event registering and firing methods
|
||
|
|
*/
|
||
|
|
function EventEmitter() {
|
||
|
|
// Initialise required storage variables
|
||
|
|
this._events = {};
|
||
|
|
}
|
||
|
|
|
||
|
|
var isArray = Array.isArray;
|
||
|
|
|
||
|
|
|
||
|
|
EventEmitter.prototype.addListener = function(type, listener, scope, once) {
|
||
|
|
if ('function' !== typeof listener) {
|
||
|
|
throw new Error('addListener only takes instances of Function');
|
||
|
|
}
|
||
|
|
|
||
|
|
// To avoid recursion in the case that type == "newListeners"! Before
|
||
|
|
// adding it to the listeners, first emit "newListeners".
|
||
|
|
this.emit('newListener', type, typeof listener.listener === 'function' ?
|
||
|
|
listener.listener : listener);
|
||
|
|
|
||
|
|
if (!this._events[type]) {
|
||
|
|
// Optimize the case of one listener. Don't need the extra array object.
|
||
|
|
this._events[type] = listener;
|
||
|
|
} else if (isArray(this._events[type])) {
|
||
|
|
|
||
|
|
// If we've already got an array, just append.
|
||
|
|
this._events[type].push(listener);
|
||
|
|
|
||
|
|
} else {
|
||
|
|
// Adding the second element, need to change to array.
|
||
|
|
this._events[type] = [this._events[type], listener];
|
||
|
|
}
|
||
|
|
|
||
|
|
};
|
||
|
|
|
||
|
|
EventEmitter.prototype.on = EventEmitter.prototype.addListener;
|
||
|
|
|
||
|
|
EventEmitter.prototype.once = function(type, listener, scope) {
|
||
|
|
if ('function' !== typeof listener) {
|
||
|
|
throw new Error('.once only takes instances of Function');
|
||
|
|
}
|
||
|
|
|
||
|
|
var self = this;
|
||
|
|
function g() {
|
||
|
|
self.removeListener(type, g);
|
||
|
|
listener.apply(this, arguments);
|
||
|
|
};
|
||
|
|
|
||
|
|
g.listener = listener;
|
||
|
|
self.on(type, g);
|
||
|
|
|
||
|
|
return this;
|
||
|
|
};
|
||
|
|
|
||
|
|
EventEmitter.prototype.removeListener = function(type, listener, scope) {
|
||
|
|
if ('function' !== typeof listener) {
|
||
|
|
throw new Error('removeListener only takes instances of Function');
|
||
|
|
}
|
||
|
|
|
||
|
|
// does not use listeners(), so no side effect of creating _events[type]
|
||
|
|
if (!this._events[type]) return this;
|
||
|
|
|
||
|
|
var list = this._events[type];
|
||
|
|
|
||
|
|
if (isArray(list)) {
|
||
|
|
var position = -1;
|
||
|
|
for (var i = 0, length = list.length; i < length; i++) {
|
||
|
|
if (list[i] === listener ||
|
||
|
|
(list[i].listener && list[i].listener === listener))
|
||
|
|
{
|
||
|
|
position = i;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (position < 0) return this;
|
||
|
|
list.splice(position, 1);
|
||
|
|
if (list.length == 0)
|
||
|
|
delete this._events[type];
|
||
|
|
} else if (list === listener ||
|
||
|
|
(list.listener && list.listener === listener))
|
||
|
|
{
|
||
|
|
delete this._events[type];
|
||
|
|
}
|
||
|
|
|
||
|
|
return this;
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
EventEmitter.prototype.off = EventEmitter.prototype.removeListener;
|
||
|
|
|
||
|
|
|
||
|
|
EventEmitter.prototype.removeAllListeners = function(type) {
|
||
|
|
if (arguments.length === 0) {
|
||
|
|
this._events = {};
|
||
|
|
return this;
|
||
|
|
}
|
||
|
|
|
||
|
|
// does not use listeners(), so no side effect of creating _events[type]
|
||
|
|
if (type && this._events && this._events[type]) this._events[type] = null;
|
||
|
|
return this;
|
||
|
|
};
|
||
|
|
|
||
|
|
EventEmitter.prototype.listeners = function(type) {
|
||
|
|
if (!this._events[type]) this._events[type] = [];
|
||
|
|
if (!isArray(this._events[type])) {
|
||
|
|
this._events[type] = [this._events[type]];
|
||
|
|
}
|
||
|
|
return this._events[type];
|
||
|
|
};
|
||
|
|
|
||
|
|
EventEmitter.prototype.emit = function(type) {
|
||
|
|
var type = arguments[0];
|
||
|
|
var handler = this._events[type];
|
||
|
|
if (!handler) return false;
|
||
|
|
|
||
|
|
if (typeof handler == 'function') {
|
||
|
|
switch (arguments.length) {
|
||
|
|
// fast cases
|
||
|
|
case 1:
|
||
|
|
handler.call(this);
|
||
|
|
break;
|
||
|
|
case 2:
|
||
|
|
handler.call(this, arguments[1]);
|
||
|
|
break;
|
||
|
|
case 3:
|
||
|
|
handler.call(this, arguments[1], arguments[2]);
|
||
|
|
break;
|
||
|
|
// slower
|
||
|
|
default:
|
||
|
|
var l = arguments.length;
|
||
|
|
var args = new Array(l - 1);
|
||
|
|
for (var i = 1; i < l; i++) args[i - 1] = arguments[i];
|
||
|
|
handler.apply(this, args);
|
||
|
|
}
|
||
|
|
return true;
|
||
|
|
|
||
|
|
} else if (isArray(handler)) {
|
||
|
|
var l = arguments.length;
|
||
|
|
var args = new Array(l - 1);
|
||
|
|
for (var i = 1; i < l; i++) args[i - 1] = arguments[i];
|
||
|
|
|
||
|
|
var listeners = handler.slice();
|
||
|
|
for (var i = 0, l = listeners.length; i < l; i++) {
|
||
|
|
listeners[i].apply(this, args);
|
||
|
|
}
|
||
|
|
return true;
|
||
|
|
} else {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
var util = {
|
||
|
|
inherits: function(ctor, superCtor) {
|
||
|
|
ctor.super_ = superCtor;
|
||
|
|
ctor.prototype = Object.create(superCtor.prototype, {
|
||
|
|
constructor: {
|
||
|
|
value: ctor,
|
||
|
|
enumerable: false,
|
||
|
|
writable: true,
|
||
|
|
configurable: true
|
||
|
|
}
|
||
|
|
});
|
||
|
|
},
|
||
|
|
extend: function(dest, source) {
|
||
|
|
for(var key in source) {
|
||
|
|
if(source.hasOwnProperty(key)) {
|
||
|
|
dest[key] = source[key];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return dest;
|
||
|
|
},
|
||
|
|
pack: BinaryPack.pack,
|
||
|
|
unpack: BinaryPack.unpack,
|
||
|
|
setZeroTimeout: (function(global) {
|
||
|
|
var timeouts = [];
|
||
|
|
var messageName = 'zero-timeout-message';
|
||
|
|
|
||
|
|
// Like setTimeout, but only takes a function argument. There's
|
||
|
|
// no time argument (always zero) and no arguments (you have to
|
||
|
|
// use a closure).
|
||
|
|
function setZeroTimeoutPostMessage(fn) {
|
||
|
|
timeouts.push(fn);
|
||
|
|
global.postMessage(messageName, '*');
|
||
|
|
}
|
||
|
|
|
||
|
|
function handleMessage(event) {
|
||
|
|
if (event.source == global && event.data == messageName) {
|
||
|
|
if (event.stopPropagation) {
|
||
|
|
event.stopPropagation();
|
||
|
|
}
|
||
|
|
if (timeouts.length) {
|
||
|
|
timeouts.shift()();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if (global.addEventListener) {
|
||
|
|
global.addEventListener('message', handleMessage, true);
|
||
|
|
} else if (global.attachEvent) {
|
||
|
|
global.attachEvent('onmessage', handleMessage);
|
||
|
|
}
|
||
|
|
return setZeroTimeoutPostMessage;
|
||
|
|
}(this))
|
||
|
|
};
|
||
|
|
|
||
|
|
exports.util = util;
|
||
|
|
|
||
|
|
|
||
|
|
function Stream() {
|
||
|
|
EventEmitter.call(this);
|
||
|
|
}
|
||
|
|
|
||
|
|
util.inherits(Stream, EventEmitter);
|
||
|
|
|
||
|
|
Stream.prototype.pipe = function(dest, options) {
|
||
|
|
var source = this;
|
||
|
|
|
||
|
|
function ondata(chunk) {
|
||
|
|
if (dest.writable) {
|
||
|
|
if (false === dest.write(chunk) && source.pause) {
|
||
|
|
source.pause();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
source.on('data', ondata);
|
||
|
|
|
||
|
|
function ondrain() {
|
||
|
|
if (source.readable && source.resume) {
|
||
|
|
source.resume();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
dest.on('drain', ondrain);
|
||
|
|
|
||
|
|
// If the 'end' option is not supplied, dest.end() will be called when
|
||
|
|
// source gets the 'end' or 'close' events. Only dest.end() once.
|
||
|
|
if (!dest._isStdio && (!options || options.end !== false)) {
|
||
|
|
source.on('end', onend);
|
||
|
|
source.on('close', onclose);
|
||
|
|
}
|
||
|
|
|
||
|
|
var didOnEnd = false;
|
||
|
|
function onend() {
|
||
|
|
if (didOnEnd) return;
|
||
|
|
didOnEnd = true;
|
||
|
|
|
||
|
|
dest.end();
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
function onclose() {
|
||
|
|
if (didOnEnd) return;
|
||
|
|
didOnEnd = true;
|
||
|
|
|
||
|
|
dest.destroy();
|
||
|
|
}
|
||
|
|
|
||
|
|
// don't leave dangling pipes when there are errors.
|
||
|
|
function onerror(er) {
|
||
|
|
cleanup();
|
||
|
|
if (this.listeners('error').length === 0) {
|
||
|
|
throw er; // Unhandled stream error in pipe.
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
source.on('error', onerror);
|
||
|
|
dest.on('error', onerror);
|
||
|
|
|
||
|
|
// remove all the event listeners that were added.
|
||
|
|
function cleanup() {
|
||
|
|
source.removeListener('data', ondata);
|
||
|
|
dest.removeListener('drain', ondrain);
|
||
|
|
|
||
|
|
source.removeListener('end', onend);
|
||
|
|
source.removeListener('close', onclose);
|
||
|
|
|
||
|
|
source.removeListener('error', onerror);
|
||
|
|
dest.removeListener('error', onerror);
|
||
|
|
|
||
|
|
source.removeListener('end', cleanup);
|
||
|
|
source.removeListener('close', cleanup);
|
||
|
|
|
||
|
|
dest.removeListener('end', cleanup);
|
||
|
|
dest.removeListener('close', cleanup);
|
||
|
|
}
|
||
|
|
|
||
|
|
source.on('end', cleanup);
|
||
|
|
source.on('close', cleanup);
|
||
|
|
|
||
|
|
dest.on('end', cleanup);
|
||
|
|
dest.on('close', cleanup);
|
||
|
|
|
||
|
|
dest.emit('pipe', source);
|
||
|
|
|
||
|
|
// Allow for unix-like usage: A.pipe(B).pipe(C)
|
||
|
|
return dest;
|
||
|
|
};
|
||
|
|
|
||
|
|
exports.Stream = Stream;
|
||
|
|
function BlobReadStream(source, options){
|
||
|
|
Stream.call(this);
|
||
|
|
|
||
|
|
options = util.extend({
|
||
|
|
readDelay: 0,
|
||
|
|
paused: false
|
||
|
|
}, options);
|
||
|
|
|
||
|
|
this._source = source;
|
||
|
|
this._start = 0;
|
||
|
|
this._readChunkSize = options.chunkSize || source.size;
|
||
|
|
this._readDelay = options.readDelay;
|
||
|
|
|
||
|
|
this.readable = true;
|
||
|
|
this.paused = options.paused;
|
||
|
|
|
||
|
|
this._read();
|
||
|
|
}
|
||
|
|
|
||
|
|
util.inherits(BlobReadStream, Stream);
|
||
|
|
|
||
|
|
|
||
|
|
BlobReadStream.prototype.pause = function(){
|
||
|
|
this.paused = true;
|
||
|
|
};
|
||
|
|
|
||
|
|
BlobReadStream.prototype.resume = function(){
|
||
|
|
this.paused = false;
|
||
|
|
this._read();
|
||
|
|
};
|
||
|
|
|
||
|
|
BlobReadStream.prototype.destroy = function(){
|
||
|
|
this.readable = false;
|
||
|
|
clearTimeout(this._timeoutId);
|
||
|
|
};
|
||
|
|
|
||
|
|
BlobReadStream.prototype._read = function(){
|
||
|
|
|
||
|
|
var self = this;
|
||
|
|
|
||
|
|
function emitReadChunk(){
|
||
|
|
self._emitReadChunk();
|
||
|
|
}
|
||
|
|
|
||
|
|
var readDelay = this._readDelay;
|
||
|
|
if (readDelay !== 0){
|
||
|
|
this._timeoutId = setTimeout(emitReadChunk, readDelay);
|
||
|
|
} else {
|
||
|
|
util.setZeroTimeout(emitReadChunk);
|
||
|
|
}
|
||
|
|
|
||
|
|
};
|
||
|
|
|
||
|
|
BlobReadStream.prototype._emitReadChunk = function(){
|
||
|
|
|
||
|
|
if(this.paused || !this.readable) return;
|
||
|
|
|
||
|
|
var chunkSize = Math.min(this._source.size - this._start, this._readChunkSize);
|
||
|
|
|
||
|
|
if(chunkSize === 0){
|
||
|
|
this.readable = false;
|
||
|
|
this.emit("end");
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
var sourceEnd = this._start + chunkSize;
|
||
|
|
var chunk = (this._source.slice || this._source.webkitSlice || this._source.mozSlice).call(this._source, this._start, sourceEnd);
|
||
|
|
|
||
|
|
this._start = sourceEnd;
|
||
|
|
this._read();
|
||
|
|
|
||
|
|
this.emit("data", chunk);
|
||
|
|
|
||
|
|
};
|
||
|
|
|
||
|
|
/*
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
function BlobWriteStream(options){
|
||
|
|
|
||
|
|
stream.Stream.call(this);
|
||
|
|
|
||
|
|
options = _.extend({
|
||
|
|
onFull: onFull,
|
||
|
|
onEnd: function(){},
|
||
|
|
minBlockAllocSize: 0,
|
||
|
|
drainDelay:0
|
||
|
|
}, options);
|
||
|
|
|
||
|
|
this._onFull = options.onFull;
|
||
|
|
this._onEnd = options.onEnd;
|
||
|
|
this._onWrite = options.onWrite;
|
||
|
|
|
||
|
|
this._minBlockAllocSize = options.minBlockAllocSize;
|
||
|
|
this._maxBlockAllocSize = options.maxBlockAllocSize;
|
||
|
|
this._drainDelay = options.drainDelay;
|
||
|
|
|
||
|
|
this._buffer = new Buffer(options.minBlockAllocSize);
|
||
|
|
this._destination = this._buffer;
|
||
|
|
this._destinationPos = 0;
|
||
|
|
|
||
|
|
this._writeQueue = [];
|
||
|
|
this._pendingOnFull = false;
|
||
|
|
this._pendingQueueDrain = false;
|
||
|
|
|
||
|
|
this.writable = true;
|
||
|
|
this.bytesWritten = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
util.inherits(BlobWriteStream, stream.Stream);
|
||
|
|
|
||
|
|
BlobWriteStream.prototype.getBuffer = function(){
|
||
|
|
return this._buffer;
|
||
|
|
};
|
||
|
|
|
||
|
|
BlobWriteStream.prototype.write = function(data, encoding){
|
||
|
|
|
||
|
|
if(!this.writable){
|
||
|
|
throw new Error("stream is not writable");
|
||
|
|
}
|
||
|
|
|
||
|
|
if(!Buffer.isBuffer(data)){
|
||
|
|
data = new Buffer(data, encoding);
|
||
|
|
}
|
||
|
|
|
||
|
|
if(data.length){
|
||
|
|
this._writeQueue.push(data);
|
||
|
|
}
|
||
|
|
|
||
|
|
this._commit();
|
||
|
|
|
||
|
|
return this._writeQueue.length === 0;
|
||
|
|
};
|
||
|
|
|
||
|
|
BlobWriteStream.prototype._commit = function(){
|
||
|
|
|
||
|
|
var self = this;
|
||
|
|
|
||
|
|
var destination = this._destination;
|
||
|
|
var writeQueue = this._writeQueue;
|
||
|
|
|
||
|
|
var startDestinationPos = this._destinationPos;
|
||
|
|
|
||
|
|
while(writeQueue.length && destination.length){
|
||
|
|
|
||
|
|
var head = writeQueue[0];
|
||
|
|
|
||
|
|
var copySize = Math.min(destination.length, head.length);
|
||
|
|
|
||
|
|
head.copy(destination, 0, 0, copySize);
|
||
|
|
|
||
|
|
head = head.slice(copySize);
|
||
|
|
destination = destination.slice(copySize);
|
||
|
|
|
||
|
|
this.bytesWritten += copySize;
|
||
|
|
this._destinationPos += copySize;
|
||
|
|
|
||
|
|
if(head.length === 0){
|
||
|
|
writeQueue.shift();
|
||
|
|
}
|
||
|
|
else{
|
||
|
|
writeQueue[0] = head;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
this._destination = destination;
|
||
|
|
|
||
|
|
bytesCommitted = this._destinationPos - startDestinationPos;
|
||
|
|
if(bytesCommitted){
|
||
|
|
if(this._onWrite){
|
||
|
|
|
||
|
|
if(writeQueue.length){
|
||
|
|
this._pendingQueueDrain = true;
|
||
|
|
}
|
||
|
|
|
||
|
|
// By locking destination the buffer is frozen and the onWrite
|
||
|
|
// callback cannot miss any write commits
|
||
|
|
this._destination = emptyBuffer;
|
||
|
|
|
||
|
|
var consumer = this._onWrite;
|
||
|
|
this._onWrite = null;
|
||
|
|
|
||
|
|
consumer.call(this, function(nextCallback){
|
||
|
|
util.setZeroTimeout(function(){
|
||
|
|
self._destination = destination;
|
||
|
|
self._onWrite = nextCallback;
|
||
|
|
self._commit();
|
||
|
|
});
|
||
|
|
}, consumer);
|
||
|
|
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if(writeQueue.length){
|
||
|
|
|
||
|
|
this._pendingQueueDrain = true;
|
||
|
|
this._growBuffer();
|
||
|
|
}
|
||
|
|
else if(this._pendingQueueDrain){
|
||
|
|
|
||
|
|
this._pendingQueueDrain = false;
|
||
|
|
|
||
|
|
if(this._drainDelay !== 0){
|
||
|
|
setTimeout(function(){
|
||
|
|
self.emit("drain");
|
||
|
|
}, this._drainDelay);
|
||
|
|
}
|
||
|
|
else{
|
||
|
|
util.setZeroTimeout(function(){
|
||
|
|
self.emit("drain");
|
||
|
|
});
|
||
|
|
}
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
BlobWriteStream.prototype._growBuffer = function(){
|
||
|
|
|
||
|
|
var self = this;
|
||
|
|
var writeQueue = this._writeQueue;
|
||
|
|
|
||
|
|
var requestSize = this._minBlockAllocSize;
|
||
|
|
|
||
|
|
var maxBlockAllocSize = this._maxBlockAllocSize;
|
||
|
|
var add = (maxBlockAllocSize === undefined ? function(a, b){return a + b;} : function(a, b){return Math.min(a + b, maxBlockAllocSize);});
|
||
|
|
|
||
|
|
for(var i = 0, queueLength = writeQueue.length; i < queueLength; i++){
|
||
|
|
requestSize = add(requestSize, writeQueue[i].length);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Prevent concurrent onFull callbacks
|
||
|
|
if(this._pendingOnFull){
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
this._pendingOnFull = true;
|
||
|
|
|
||
|
|
this._onFull(this._buffer, requestSize, function(buffer, destination){
|
||
|
|
util.setZeroTimeout(function(){
|
||
|
|
|
||
|
|
self._pendingOnFull = false;
|
||
|
|
|
||
|
|
if(!destination){
|
||
|
|
if(self.writable){
|
||
|
|
self.emit("error", new Error("buffer is full"));
|
||
|
|
}
|
||
|
|
self.destroy();
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
self._buffer = buffer;
|
||
|
|
self._destination = destination;
|
||
|
|
|
||
|
|
self._commit();
|
||
|
|
});
|
||
|
|
});
|
||
|
|
};
|
||
|
|
|
||
|
|
BlobWriteStream.prototype.end = function(data, encoding){
|
||
|
|
|
||
|
|
var self = this;
|
||
|
|
|
||
|
|
function _end(){
|
||
|
|
self.writable = false;
|
||
|
|
self._onEnd();
|
||
|
|
}
|
||
|
|
|
||
|
|
if(data){
|
||
|
|
if(this.write(data, encoding)){
|
||
|
|
_end();
|
||
|
|
}else{
|
||
|
|
self.writable = false;
|
||
|
|
this.once("drain", _end);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else{
|
||
|
|
_end();
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
BlobWriteStream.prototype.destroy = function(){
|
||
|
|
this.writable = false;
|
||
|
|
this._pendingQueueDrain = false;
|
||
|
|
this._writeQueue = [];
|
||
|
|
};
|
||
|
|
|
||
|
|
BlobWriteStream.prototype.consume = function(consume){
|
||
|
|
|
||
|
|
this._buffer = this._buffer.slice(consume);
|
||
|
|
this._destinationPos -= consume;
|
||
|
|
};
|
||
|
|
|
||
|
|
BlobWriteStream.prototype.getCommittedSlice = function(){
|
||
|
|
return this._buffer.slice(0, this._destinationPos);
|
||
|
|
};
|
||
|
|
|
||
|
|
function onFull(buffer, extraSize, callback){
|
||
|
|
var newBuffer = new Buffer(buffer.length + extraSize);
|
||
|
|
buffer.copy(newBuffer);
|
||
|
|
callback(newBuffer, newBuffer.slice(buffer.length));
|
||
|
|
}
|
||
|
|
*/
|
||
|
|
exports.BlobReadStream = BlobReadStream;
|
||
|
|
|
||
|
|
function BinaryStream(socket, id, create, meta) {
|
||
|
|
if (!(this instanceof BinaryStream)) return new BinaryStream(options);
|
||
|
|
|
||
|
|
var self = this;
|
||
|
|
|
||
|
|
Stream.call(this);
|
||
|
|
|
||
|
|
|
||
|
|
this.id = id;
|
||
|
|
this._socket = socket;
|
||
|
|
|
||
|
|
this.writable = true;
|
||
|
|
this.readable = true;
|
||
|
|
this.paused = false;
|
||
|
|
|
||
|
|
this._closed = false;
|
||
|
|
this._ended = false;
|
||
|
|
|
||
|
|
if(create) {
|
||
|
|
// This is a stream we are creating
|
||
|
|
this._write(1, meta, this.id);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
util.inherits(BinaryStream, Stream);
|
||
|
|
|
||
|
|
|
||
|
|
BinaryStream.prototype._onDrain = function() {
|
||
|
|
if(!this.paused) {
|
||
|
|
this.emit('drain');
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
BinaryStream.prototype._onClose = function() {
|
||
|
|
// Emit close event
|
||
|
|
if (this._closed) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
this.readable = false;
|
||
|
|
this.writable = false;
|
||
|
|
this._closed = true;
|
||
|
|
this.emit('close');
|
||
|
|
};
|
||
|
|
|
||
|
|
BinaryStream.prototype._onError = function(error){
|
||
|
|
this.readable = false;
|
||
|
|
this.writable = false;
|
||
|
|
this.emit('error', error);
|
||
|
|
};
|
||
|
|
|
||
|
|
// Write stream
|
||
|
|
|
||
|
|
BinaryStream.prototype._onPause = function() {
|
||
|
|
// Emit pause event
|
||
|
|
this.paused = true;
|
||
|
|
this.emit('pause');
|
||
|
|
};
|
||
|
|
|
||
|
|
BinaryStream.prototype._onResume = function() {
|
||
|
|
// Emit resume event
|
||
|
|
this.paused = false;
|
||
|
|
this.emit('resume');
|
||
|
|
this.emit('drain');
|
||
|
|
};
|
||
|
|
|
||
|
|
BinaryStream.prototype._write = function(code, data, bonus) {
|
||
|
|
if (this._socket.readyState !== this._socket.constructor.OPEN) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
var message = util.pack([code, data, bonus]);
|
||
|
|
return this._socket.send(message) !== false;
|
||
|
|
};
|
||
|
|
|
||
|
|
BinaryStream.prototype.write = function(data) {
|
||
|
|
if(this.writable) {
|
||
|
|
var out = this._write(2, data, this.id);
|
||
|
|
return !this.paused && out;
|
||
|
|
} else {
|
||
|
|
this.emit('error', new Error('Stream is not writable'));
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
BinaryStream.prototype.end = function() {
|
||
|
|
this._ended = true;
|
||
|
|
this.readable = false;
|
||
|
|
this._write(5, null, this.id);
|
||
|
|
};
|
||
|
|
|
||
|
|
BinaryStream.prototype.destroy = BinaryStream.prototype.destroySoon = function() {
|
||
|
|
this._onClose();
|
||
|
|
this._write(6, null, this.id);
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
// Read stream
|
||
|
|
|
||
|
|
BinaryStream.prototype._onEnd = function() {
|
||
|
|
if(this._ended) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
this._ended = true;
|
||
|
|
this.readable = false;
|
||
|
|
this.emit('end');
|
||
|
|
};
|
||
|
|
|
||
|
|
BinaryStream.prototype._onData = function(data) {
|
||
|
|
// Dispatch
|
||
|
|
this.emit('data', data);
|
||
|
|
};
|
||
|
|
|
||
|
|
BinaryStream.prototype.pause = function() {
|
||
|
|
this._onPause();
|
||
|
|
this._write(3, null, this.id);
|
||
|
|
};
|
||
|
|
|
||
|
|
BinaryStream.prototype.resume = function() {
|
||
|
|
this._onResume();
|
||
|
|
this._write(4, null, this.id);
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
function BinaryClient(socket, options) {
|
||
|
|
if (!(this instanceof BinaryClient)) return new BinaryClient(socket, options);
|
||
|
|
|
||
|
|
EventEmitter.call(this);
|
||
|
|
|
||
|
|
var self = this;
|
||
|
|
|
||
|
|
this._options = util.extend({
|
||
|
|
chunkSize: 40960
|
||
|
|
}, options);
|
||
|
|
|
||
|
|
this.streams = {};
|
||
|
|
|
||
|
|
if(typeof socket === 'string') {
|
||
|
|
this._nextId = 0;
|
||
|
|
this._socket = new WebSocket(socket);
|
||
|
|
} else {
|
||
|
|
// Use odd numbered ids for server originated streams
|
||
|
|
this._nextId = 1;
|
||
|
|
this._socket = socket;
|
||
|
|
}
|
||
|
|
|
||
|
|
this._socket.binaryType = 'arraybuffer';
|
||
|
|
|
||
|
|
this._socket.addEventListener('open', function(){
|
||
|
|
self.emit('open');
|
||
|
|
});
|
||
|
|
this._socket.addEventListener('error', function(error){
|
||
|
|
var ids = Object.keys(self.streams);
|
||
|
|
for (var i = 0, ii = ids.length; i < ii; i++) {
|
||
|
|
self.streams[ids[i]]._onError(error);
|
||
|
|
}
|
||
|
|
self.emit('error', error);
|
||
|
|
});
|
||
|
|
this._socket.addEventListener('close', function(code, message){
|
||
|
|
var ids = Object.keys(self.streams);
|
||
|
|
for (var i = 0, ii = ids.length; i < ii; i++) {
|
||
|
|
self.streams[ids[i]]._onClose();
|
||
|
|
}
|
||
|
|
self.emit('close', code, message);
|
||
|
|
});
|
||
|
|
this._socket.addEventListener('message', function(data, flags){
|
||
|
|
util.setZeroTimeout(function(){
|
||
|
|
|
||
|
|
// Message format
|
||
|
|
// [type, payload, bonus ]
|
||
|
|
//
|
||
|
|
// Reserved
|
||
|
|
// [ 0 , X , X ]
|
||
|
|
//
|
||
|
|
//
|
||
|
|
// New stream
|
||
|
|
// [ 1 , Meta , new streamId ]
|
||
|
|
//
|
||
|
|
//
|
||
|
|
// Data
|
||
|
|
// [ 2 , Data , streamId ]
|
||
|
|
//
|
||
|
|
//
|
||
|
|
// Pause
|
||
|
|
// [ 3 , null , streamId ]
|
||
|
|
//
|
||
|
|
//
|
||
|
|
// Resume
|
||
|
|
// [ 4 , null , streamId ]
|
||
|
|
//
|
||
|
|
//
|
||
|
|
// End
|
||
|
|
// [ 5 , null , streamId ]
|
||
|
|
//
|
||
|
|
//
|
||
|
|
// Close
|
||
|
|
// [ 6 , null , streamId ]
|
||
|
|
//
|
||
|
|
|
||
|
|
data = data.data;
|
||
|
|
|
||
|
|
try {
|
||
|
|
data = util.unpack(data);
|
||
|
|
} catch (ex) {
|
||
|
|
return self.emit('error', new Error('Received unparsable message: ' + ex));
|
||
|
|
}
|
||
|
|
if (!(data instanceof Array))
|
||
|
|
return self.emit('error', new Error('Received non-array message'));
|
||
|
|
if (data.length != 3)
|
||
|
|
return self.emit('error', new Error('Received message with wrong part count: ' + data.length));
|
||
|
|
if ('number' != typeof data[0])
|
||
|
|
return self.emit('error', new Error('Received message with non-number type: ' + data[0]));
|
||
|
|
|
||
|
|
switch(data[0]) {
|
||
|
|
case 0:
|
||
|
|
// Reserved
|
||
|
|
break;
|
||
|
|
case 1:
|
||
|
|
var meta = data[1];
|
||
|
|
var streamId = data[2];
|
||
|
|
var binaryStream = self._receiveStream(streamId);
|
||
|
|
self.emit('stream', binaryStream, meta);
|
||
|
|
break;
|
||
|
|
case 2:
|
||
|
|
var payload = data[1];
|
||
|
|
var streamId = data[2];
|
||
|
|
var binaryStream = self.streams[streamId];
|
||
|
|
if(binaryStream) {
|
||
|
|
binaryStream._onData(payload);
|
||
|
|
} else {
|
||
|
|
self.emit('error', new Error('Received `data` message for unknown stream: ' + streamId));
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
case 3:
|
||
|
|
var streamId = data[2];
|
||
|
|
var binaryStream = self.streams[streamId];
|
||
|
|
if(binaryStream) {
|
||
|
|
binaryStream._onPause();
|
||
|
|
} else {
|
||
|
|
self.emit('error', new Error('Received `pause` message for unknown stream: ' + streamId));
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
case 4:
|
||
|
|
var streamId = data[2];
|
||
|
|
var binaryStream = self.streams[streamId];
|
||
|
|
if(binaryStream) {
|
||
|
|
binaryStream._onResume();
|
||
|
|
} else {
|
||
|
|
self.emit('error', new Error('Received `resume` message for unknown stream: ' + streamId));
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
case 5:
|
||
|
|
var streamId = data[2];
|
||
|
|
var binaryStream = self.streams[streamId];
|
||
|
|
if(binaryStream) {
|
||
|
|
binaryStream._onEnd();
|
||
|
|
} else {
|
||
|
|
self.emit('error', new Error('Received `end` message for unknown stream: ' + streamId));
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
case 6:
|
||
|
|
var streamId = data[2];
|
||
|
|
var binaryStream = self.streams[streamId];
|
||
|
|
if(binaryStream) {
|
||
|
|
binaryStream._onClose();
|
||
|
|
} else {
|
||
|
|
self.emit('error', new Error('Received `close` message for unknown stream: ' + streamId));
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
self.emit('error', new Error('Unrecognized message type received: ' + data[0]));
|
||
|
|
}
|
||
|
|
});
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
util.inherits(BinaryClient, EventEmitter);
|
||
|
|
|
||
|
|
BinaryClient.prototype.send = function(data, meta){
|
||
|
|
var stream = this.createStream(meta);
|
||
|
|
if(data instanceof Stream) {
|
||
|
|
data.pipe(stream);
|
||
|
|
} else if (util.isNode === true) {
|
||
|
|
if(Buffer.isBuffer(data)) {
|
||
|
|
(new BufferReadStream(data, {chunkSize: this._options.chunkSize})).pipe(stream);
|
||
|
|
} else {
|
||
|
|
stream.write(data);
|
||
|
|
}
|
||
|
|
} else if (util.isNode !== true) {
|
||
|
|
if(data.constructor == Blob || data.constructor == File) {
|
||
|
|
(new BlobReadStream(data, {chunkSize: this._options.chunkSize})).pipe(stream);
|
||
|
|
} else if (data.constructor == ArrayBuffer) {
|
||
|
|
var blob;
|
||
|
|
if(binaryFeatures.useArrayBufferView) {
|
||
|
|
data = new Uint8Array(data);
|
||
|
|
}
|
||
|
|
if(binaryFeatures.useBlobBuilder) {
|
||
|
|
var builder = new BlobBuilder();
|
||
|
|
builder.append(data);
|
||
|
|
blob = builder.getBlob()
|
||
|
|
} else {
|
||
|
|
blob = new Blob([data]);
|
||
|
|
}
|
||
|
|
(new BlobReadStream(blob, {chunkSize: this._options.chunkSize})).pipe(stream);
|
||
|
|
} else if (typeof data === 'object' && 'BYTES_PER_ELEMENT' in data) {
|
||
|
|
var blob;
|
||
|
|
if(!binaryFeatures.useArrayBufferView) {
|
||
|
|
// Warn
|
||
|
|
data = data.buffer;
|
||
|
|
}
|
||
|
|
if(binaryFeatures.useBlobBuilder) {
|
||
|
|
var builder = new BlobBuilder();
|
||
|
|
builder.append(data);
|
||
|
|
blob = builder.getBlob()
|
||
|
|
} else {
|
||
|
|
blob = new Blob([data]);
|
||
|
|
}
|
||
|
|
(new BlobReadStream(blob, {chunkSize: this._options.chunkSize})).pipe(stream);
|
||
|
|
} else {
|
||
|
|
stream.write(data);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return stream;
|
||
|
|
};
|
||
|
|
|
||
|
|
BinaryClient.prototype._receiveStream = function(streamId){
|
||
|
|
var self = this;
|
||
|
|
var binaryStream = new BinaryStream(this._socket, streamId, false);
|
||
|
|
binaryStream.on('close', function(){
|
||
|
|
delete self.streams[streamId];
|
||
|
|
});
|
||
|
|
this.streams[streamId] = binaryStream;
|
||
|
|
return binaryStream;
|
||
|
|
};
|
||
|
|
|
||
|
|
BinaryClient.prototype.createStream = function(meta){
|
||
|
|
if(this._socket.readyState !== WebSocket.OPEN) {
|
||
|
|
throw new Error('Client is not yet connected or has closed');
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
var self = this;
|
||
|
|
var streamId = this._nextId;
|
||
|
|
this._nextId += 2;
|
||
|
|
var binaryStream = new BinaryStream(this._socket, streamId, true, meta);
|
||
|
|
binaryStream.on('close', function(){
|
||
|
|
delete self.streams[streamId];
|
||
|
|
});
|
||
|
|
this.streams[streamId] = binaryStream;
|
||
|
|
return binaryStream;
|
||
|
|
};
|
||
|
|
|
||
|
|
BinaryClient.prototype.close = BinaryClient.prototype.destroy = function() {
|
||
|
|
this._socket.close();
|
||
|
|
};
|
||
|
|
|
||
|
|
exports.BinaryClient = BinaryClient;
|
||
|
|
|
||
|
|
})(this);
|
||
|
|
|
||
|
|
</script>
|