Flex [original] character encoding operations/string Binary Conversion

Provides a tool class

Character encoding operations

Directly go to the source code:

 

 Package  {  Import  Flash. utils. bytearray;  /**  * Encode util *  */      Public   Class  Encodeutil {  /**  * Encode UTF-8 *  @ Param Key **  @ Return  String *  */          Public   Static  Function encodeutf8 (key: string): String {var oribytearr: bytearray = New  Bytearray (); oribytearr. writeutfbytes (key); var tempbytearr: bytearray = New  Bytearray ();  For (Var I:Int = 0; I <oribytearr. length; I ++ ){  If (Oribytearr [I] = 194 ) {Tempbytearr. writebyte (oribytearr [I + 1 ]); I ++ ;}  Else   If (Oribytearr [I] = 195 ) {Tempbytearr. writebyte (oribytearr [I + 1] + 64 ); I ++;}  Else  {Tempbytearr. writebyte (oribytearr [I]);} tempbytearr. Position = 0 ; Convertstringtobytearray (key );  Return Tempbytearr. readmultibyte (tempbytearr. bytesavailable, "Chinese" );  //  Return tempbytearr. readmultibyte (tempbytearr. bytesavailable, "UTF-8 ");  }  /** * Decode string *  @ Param  Key *  @ Param  Charset (default = "UTF-8 ")**  @ Return  String *  */          Public   Static Function decodestring (key: String, charset: String = "UTF-8" ): String {var result: String = "" ; Var  Byte : Bytearray =New  Bytearray ();  Byte  . Writemultibyte (Key, charset );  Byte . Position = 0 ;  For (Var I: Int ; I < Byte . Length; I ++ ){  //  Result + = escape (string. fromcharcode (byte [I]); Result + = string. fromcharcode (Byte  [I]);}  Return  Result ;}  /**  * Encode string *  @ Param  Key *  @ Param  Charset (default = "UTF-8 ")**  @ Return  String *  */          Public   Static Function encodestring (key: String, charset: String = "UTF-8" ): String {var result: String = "" ; Var  Byte : Bytearray = Convertstringtobytearray (key );  Byte . Readmultibyte ( Byte  . Bytesavailable, charset );  Byte . Position = 0 ;  For (Var I: Int ; I <Byte . Length; I ++ ) {Result + = Escape (string. fromcharcode ( Byte  [I]);}  Return  Result ;}  /**  * Convert string to bytearray *  @ Param  Key **  @ Return  Bytearray *  */         Public   Static  Function convertstringtobytearray (key: string): bytearray {var Bytes: bytearray;  If  (Key) {bytes = New  Bytearray ();  //  Writeutfbytes (value: string) Let UTF-8 string write into byte stream;  Bytes. writeutfbytes (key );}  Return  Bytes ;} /**  * Convert bytearray to string *  @ Param  Key **  @ Return  String *  */          Public   Static  Function convertbytearraytostring (Bytes: bytearray): String {var STR: string;  If  (Bytes ){  // When bytearray convert string, please attention with Bytes's position must be 0 Bytes. Position = 0 ;  //  Readutfbytes (Length: uint): Read byte sequence at length from byte stream, and return a string; STR = Bytes. readutfbytes (bytes. Length );}  Return  STR ;}}}