var WeeChatProtocol = function() { this._types = { 'chr': this._getChar, 'int': this._getInt, 'str': this._getString, 'inf': this._getInfo, 'hda': this._getHdata, 'ptr': this._getPointer, 'lon': this._getStrNumber, 'tim': this._getTime, 'buf': this._getString, 'arr': this._getArray }; }; WeeChatProtocol._uia2s = function(uia) { var str = []; for (var c = 0; c < uia.length; c++) { str.push(String.fromCharCode(uia[c])); } return decodeURIComponent(escape(str.join(''))); }; WeeChatProtocol.prototype = { _getType: function() { var t = this._getSlice(3); return WeeChatProtocol._uia2s(new Uint8Array(t)); }, _runType: function(type) { var cb = this._types[type]; var boundCb = cb.bind(this); return boundCb(); }, _getStrNumber: function() { var len = new Uint8Array(this._getSlice(1))[0]; var str = this._getSlice(len); return WeeChatProtocol._uia2s(new Uint8Array(str)); }, _getInfo: function() { var info = {}; info.key = this._getString(); info.value = this._getString(); return info; }, _getHdata: function() { var self = this; var paths; var count; var objs = []; var hpath = this._getString(); keys = this._getString().split(','); paths = hpath.split('/'); count = this._getInt(); keys = keys.map(function(key) { return key.split(':'); }); for (var i = 0; i < count; i++) { var tmp = {}; tmp.pointers = paths.map(function(path) { return self._getPointer(); }); keys.forEach(function(key) { tmp[key[0]] = self._runType(key[1]); }); objs.push(tmp); }; return objs; }, _getPointer: function() { return this._getStrNumber(); }, _getTime: function() { var str = this._getStrNumber(); return new Date(parseInt(str)); }, _getInt: function() { var parsedData = new Uint8Array(this._getSlice(4)); return ((parsedData[0] & 0xff) << 24) | ((parsedData[1] & 0xff) << 16) | ((parsedData[2] & 0xff) << 8) | (parsedData[3] & 0xff); }, _getChar: function() { var parsedData = new Uint8Array(this._getSlice(1)); return parsedData[0]; }, _getString: function() { var l = this._getInt(); if (l > 0) { var s = this._getSlice(l); var parsedData = new Uint8Array(s); return WeeChatProtocol._uia2s(parsedData); } return ""; }, _getHeader: function() { var len = this._getInt(); var comp = this._getChar(); return { length: len, compression: comp, }; }, _getId: function() { return this._getString(); }, _getObject: function() { var self = this; var type = this._getType(); if (type) { return { type: type, content: self._runType(type), }; } }, _getArray: function() { var self = this; var type; var count; var values; type = this._getType(); count = this._getInt(); values = []; for (var i = 0; i < count; i++) { values.push(self._runType(type)); }; return values; }, _getSlice: function(length) { var slice = this._data.slice(this._dataAt, this._dataAt + length); this._dataAt += length; return slice; }, _setData: function (data) { this._data = data; }, parse: function(data) { var self = this; this._setData(data); this._dataAt = 0; var header = this._getHeader(); var id = this._getId(); var objects = []; var object = this._getObject(); while (object) { objects.push(object); object = self._getObject(); } return { header: header, id: id, objects: objects, }; } };