这个解析类是我现在项目中用到的一个as3与erlang sokcet通信的一个类。 解析出来的数据是数组。
本想做成object的, 不过这得服务器那边配合. 服务器这边的工作量就会加大了, 因为每一个值都要加一个元素符这样才能构成object基本的组成元素。
我们的做法是:服务端那边返回的数据,在协作平台上把数据元素列出来, 前端做开发就参考这个数据列表来做开发 。
BertClass.as文件定义一些字头类型
- package app.model.comsocket.comParse {
- /**
- * 字节头类型
- * @author zl-主程
- */
- public class BertClass{
- public static const BERT_START:String = String.fromCharCode(131);
- public static const SMALL_ATOM:String = String.fromCharCode(115);
- public static const ATOM:String = String.fromCharCode(100);
- public static const BINARY:String = String.fromCharCode(109);
- public static const SMALL_INTEGER:String = String.fromCharCode(97);
- public static const INTEGER:String = String.fromCharCode(98);
- public static const SMALL_BIG:String = String.fromCharCode(110);
- public static const LARGE_BIG:String = String.fromCharCode(111);
- public static const FLOAT:String = String.fromCharCode(99);
- public static const STRING:String = String.fromCharCode(107);
- public static const LIST:String = String.fromCharCode(108);
- public static const SMALL_TUPLE:String = String.fromCharCode(104);
- public static const LARGE_TUPLE:String = String.fromCharCode(105);
- public static const NIL:String = String.fromCharCode(106);
- public static const ZERO:String = String.fromCharCode(0);
- }
- }
ParseSocketData.as 解析erlang神发送的二进制和发送数据给erlang神
- package app.model.comsocket.comParse {
- import app.utility.debug.Debug;
- import flash.display.Sprite;
- import flash.utils.ByteArray;
- /**
- * @author silva-主程
- */
- public class ParseSocketData extends Sprite {
- public static function bytes_to_string(arr:ByteArray):String {
- var str:String = ";";;
- var len:int = arr.length;
- //Debug.log(";len:"; + arr.length);
- for (var i:int = 0; i <; len; i++) {
- //Debug.log(arr[i])
- str += String.fromCharCode(arr[i]);
- }
- return str;
- }
- /**
- *
- * @param str Unicode 字符代码
- * @return
- */
- public static function decode(str:String):Array {
- if (String.fromCharCode(str.charCodeAt(0)) != BertClass.BERT_START) {
- Debug.error(";不是有效的二进制";);
- return [];
- }
- var Obj:Object = decode_inner(str.substring(1));
- try {
- if (Obj.rest !== ";";) {
- Debug.error(";空";);
- }
- }catch (e:Error) {
- Debug.error(";解析出错!!"; + e.toString());
- }
-
- return Obj.value;
- };
- /**
- * 从不同类型中拿数据
- * @param str
- */
- private static function decode_inner(str:String):Object {
- var Type:String = String.fromCharCode(str.charCodeAt(0));
- //Debug.log(";Type:";+str.charCodeAt(0));
- //跳过头
- var str:String = str.substring(1);
- switch (Type) {
- case BertClass.SMALL_INTEGER:
- //97
- return decode_integer(str, 1);
- break;
- case BertClass.INTEGER:
- //98
- return decode_integer(str, 4);
- break;
- case BertClass.SMALL_ATOM:
- //115
- return decode_atom(str, 1);
- break;
- case BertClass.FLOAT:
- //99
- return decode_float(str);
- break;
- case BertClass.ATOM:
- //常量 100
- return decode_atom(str, 2);
- break;
- case BertClass.STRING:
- //字符型 107
- return decode_string(str);
- case BertClass.LIST:
- //LIST 108
- return decode_list(str);
- break;
- case BertClass.SMALL_TUPLE:
- //104 {}
- return decode_tuple(str, 1);
- break;
- case BertClass.NIL:
- //
- return decode_nil(str);
- break;
- case BertClass.SMALL_BIG:
- //110
- return decode_big(str, 1);
- break;
- case BertClass.LARGE_BIG:
- //111
- return decode_big(str, 4);
- break;
- default:
- Debug.error(";找不到字节头类型"; + str.charCodeAt(0));
- Debug.error(";找不到字节头类型"; + Type==BertClass.SMALL_INTEGER);
- Debug.error(";找不到字节头类型"; + Type);
- Debug.error(";找不到字节头类型"; + BertClass.SMALL_INTEGER);
- return {
- value:null
- };
- }
- };
- /**
- * 97 98 获取
- * @param str
- * @param count
- */
- private static function decode_integer(str:String, count:int):Object {
- var Value:int = bytes_to_int(str, count);
- var temStr:String = str.substring(count);
- return {
- value: Value,
- rest: temStr
- };
- };
- /**
- * 99
- * @param str
- * @return
- */
- private static function decode_float(str:String):Object {
- var Size:int = 31;
- return {
- value: parseFloat(str.substring(0, Size)),
- rest: str.substring(Size)
- };
- };
- /**
- * 100 常量字符获取
- * @param str
- * @param count
- * @return
- */
- private static function decode_atom(str:String, count:int):Object {
- var Size:int;
- Size = bytes_to_int(str, count);
- var temStr:String = str.substring(count);
- var value:String;
- var temBy:ByteArray = new ByteArray();
- for (var i:int = 0; i <; Size; i++) {
- temBy.writeByte(temStr.charCodeAt(i));
- }
- temBy.position = 0;
- value = temBy.readUTFBytes(Size);
- return {
- value:value,
- rest:temStr.substring(Size)
- }
- };
-
- private static function decode_nil(str:String):Object {
- // nil is an empty list
- return {
- value: [],
- rest: str
- };
- };
- /**
- * 107
- * 获取字符串
- * @param str
- */
- private static function decode_string(str:String):Object {
- var Size:int = bytes_to_int(str, 2);
- var temStr:String = str.substring(2);
- var temBy:ByteArray = new ByteArray();
- var value:String;
- for (var i:int = 0; i <; Size; i++) {
- temBy.writeByte(temStr.charCodeAt(i));
- }
- temBy.position = 0;
- value = temBy.readUTFBytes(Size);
- return {
- value: value,
- rest: temStr.substring(Size)
- };
- };
- /**
- * 104
- * @param str
- * @param count
- * @return
- */
- private static function decode_tuple(str:String, count:int):Object {
- var Arr:Array = new Array();
- var El:Object;
- var Size:int = bytes_to_int(str, count);
- var temStr:String = str.substring(count);
- for (var i:int = 0; i <; Size; i++) {
- El = decode_inner(temStr);
- Arr.push(El.value);
- temStr = El.rest;
- }
- return {
- value: Arr,
- rest: temStr
- };
- };
- /**
- * 108
- */
- private static function decode_list(str:String):Object {
- var Size:int;
- var El:Object;
- var LastChar:String;
- var Arr:Array = new Array();
- Size = bytes_to_int(str, 4);
- var temStr:String = str.substring(4);
- for (var i:int = 0; i <; Size; i++) {
- El = decode_inner(temStr);
- Arr.push(El.value);
- temStr = El.rest;
- }
- LastChar = String.fromCharCode(temStr.charCodeAt(0));
- if (LastChar != BertClass.NIL) {
- Debug.error(";数组未结束";);
- }
- var temStr2:String = temStr.substring(1);
- return {
- value: Arr,
- rest: temStr2
- };
- };
- /**
- * 110 111
- */
- private static function decode_big(str:String, count:int):Object {
- var Size:int, Value:Number;
- Size = bytes_to_int(str, count);
- var temStr:String = str.substring(count);
- Value = bytes_to_bignum(temStr, Size);
- return {
- value : Value,
- rest: temStr.substring(Size + 1)
- };
- };
- /**
- * 大数字算法
- * @param str
- * @param count
- */
- private static function bytes_to_bignum(str:String, count:int):Number {
- var isNegative:Boolean;
- var n:Number;
- var Num:Number;
- isNegative = (str.charCodeAt(0) === 1);
- str = str.substring(1);
- for (var i:int = count - 1; i >;= 0; i--) {
- n = str.charCodeAt(i);
- if (Num === 0) {
- Num = n;
- }
- else {
- Num = Num * 256 + n;
- }
- }
- if (isNegative) {
- return Num * -1;
- }
- return Num;
- };
- /**
- * 返回获取数据的长度
- * @param str
- * @param Length
- * @return
- */
- private static function bytes_to_int(str:String, Length:int):int {
- var isNegative:Boolean;
- var n:Number ;
- var Num:int;
- isNegative = (str.charCodeAt(0) >; 128);
- for (var i:int = 0; i <; Length; i++) {
- n = str.charCodeAt(i);
- if (isNegative) {
- n = 255 - n;
- }
- if (Num === 0) {
- Num = n;
- }else {
- Num = Num * 256 + n;
- }
- }
- if (isNegative) {
- Num = Num * (0 - 1);
- }
- return Num;
- };
- ///----发送---
- /**
- * 发送数据解析
- * @param _arr:Array 发送数据数组
- * @return 返回ByteArray 对象
- */
- public static function parseSendData(_arr:Array):ByteArray {
- var TemByteArr:ByteArray = new ByteArray();
- var ReturnTemArr:ByteArray = new ByteArray();
- var temBy:Array = new Array();
- //TemByteArr.writeShort(_arr.length);
- TemByteArr.writeByte(131);
- TemByteArr.writeByte(104);
- TemByteArr.writeByte(_arr.length);
- temBy = sendData(_arr);
- for (var i :int = 0; i <; temBy.length; i++) {
- //Debug.log(temBy[i])
- TemByteArr.writeByte(temBy[i]);
- }
- ReturnTemArr.writeUnsignedInt(TemByteArr.length);
- //加密发送
- ReturnTemArr.writeBytes(Encrypt.enArc4(TemByteArr));
- return ReturnTemArr as ByteArray;
- }
- /**
- * 声明 暂时没找到AS3区分字符串与常量的办法 故已特殊字符做了一下处理
- * @param _arr:Array 查询数组
- * @return 二进制数组
- */
- private static function sendData(_arr:Array):Array {
- var len:int = _arr.length;
- var SendByteArray:Array = new Array();
- for (var s:int = 0; s <; len; s++) {
- if (_arr[s] is String) {
- if (_arr[s].substr(0, 6) == ";const@";) {
- SendByteArray=SendByteArray.concat(DataUtil.parseCode(_arr[s].split(/@/)[1], ";const";));
- }else {
- SendByteArray=SendByteArray.concat(DataUtil.parseCode(_arr[s], ";string";));
- }
- }else if (_arr[s] is Number) {
- SendByteArray = SendByteArray.concat(DataUtil.parseCode(_arr[s], ";number";));
- }else if (_arr[s] is Array) {
- SendByteArray = SendByteArray.concat([104,_arr[s].length]);
- sendData(_arr[s]);
- continue;
- }
- }
-
- return SendByteArray as Array;
- }
- }
- }
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