Using AS2 to solve Chinese ID3 garbled characters

Solve | Chinese

Flash if the MP3 ID3 tag uses GB2312 encoding, then the Flash script output is garbled
Code 1

var s:sound=new Sound (this);
S.loadsound ("Dxh.mp3", false);
S.onid3=function () {
Trace (This.id3.songname);
}

The output results are:
¶¡ïã»

Dxh.mp3 's ID3v1 label correctly should be Songname= " lilac ", it appears that flash on the transfer code on the problem. Let's take a look at songname what is the bottom of this string?

Code 2:var s:sound=new Sound (this);
S.loadsound ("Dxh.mp3", false);
S.onid3=function () {
var songname:string=this.id3.songname;
for (Var i=0;i<songname.length;i++) {
Trace (Songname.charcodeat (i));
}
}
The output results are:
182
161
207
227
187
168
We use calculator to convert into 16 is "B6 A1 CF E3 BB A8";
Just the "Lilac" GB2312 code, we still use flash to try

System.usecodepage=true;
Trace (unescape ("%b6%a1%cf%e3%bb%a8"));
The output results are:
Ding fragrant flowers

Then why code 1 garbled phenomenon, because Flash will GB2312 as a UTF-8 to explain, we again to test:

Code 3:

var s:sound=new Sound (this);
S.loadsound ("Dxh.mp3", false);
S.onid3=function () {
var songname:string=this.id3.songname;
Trace (Escape (songname));
}
The result:
%3f%3f%3f%3f%3f%a1%a7
The cause of the problem we found, as long as the GB2312 converted to UTF-8 code can be shown normal, but if the conversion, we look at code 2, I test the idea

Code 4:
System.usecodepage=true;
var gb:string=unescape ("%b6%a1%cf%e3%bb%a8");
System.usecodepage=false;
Trace (GB);
Trace (Escape (GB));
Output results:
Ding fragrant flowers
%e4%b8%81%e9%a6%99%e8%8a%b1

The second line is the "Lilac" UTF-8 code, that has been converted successfully, we have to specifically implement this process

Class Lm.utils.LUTF {
Public Function Toutf (source:string): string{
var target:string= "";
for (Var i=0;i<source.length;i++) {
Target+=this.codetohex (Source.charcodeat (i));
}
System.usecodepage=true;
Target=unescape (target);
System.usecodepage=false;
return target;
}
Private Function Codetohex (code:number): string{
var low:number=code%16;
var high:number= (Code-low)/16;
Return "%" +hex (high) +hex (low);
}
Private function Hex (code:number): string{
Switch (code) {
Case 10:
return "A";
Break
Case 11:
return "B";
Break
Case 12:
return "C";
Break
Case 13:
return "D";
Break
Case 14:
return "E";
Break
Case 15:
return "F";
Break
Default
return String (code);
Break
}
}
}

Let's test it again.

Import Lm.utils.LUTF;
var u=new lutf ();
var s:sound=new Sound (this);
S.loadsound ("Dxh.mp3", false);
S.onid3=function () {
var songname:string=_root.u.toutf (this.id3.songname);
Trace (Songname);
}

Output results:
Ding fragrant flowers
To this end we have solved this garbled problem, the use of this technique can also solve other garbled problems!