Character display

Question

Hi, i'm getting an array of bytes from a socket connection to a remote computer. When i try to convert the bytes to a string to see the content, i'm getting ANSI control characters:
6 bytes free ?[25;1H?[0mC:\WINNT\system32>
?[25;19H?D?[25;1H?[0m
?[25;1H?[25;1H?[0mC:\WIN
NT\system32> ?[25;19
H
?D?[25;1H?[0m
?[25;1H?[25;1H?[0mC:\WINNT\system32>
?[25;19H
?D?[25;1H?[0m
?[25;1H?[25;1H?[0mC:\WINNT\system32>
?[25;19H
?[1;1H?[0m Volume in drive D has no label.
?[2;1H?[0m Volume Serial Number is A8A3-BC86
?[3;1H?[0m
?[4;1H?[0m Directory of D:\
?[5;1H?[0m
?[6;1H?[0m08/15/01 03:59p <DIR>
backup
?[7;1H?[0m11/13/01 11:40a
The code is:
byte[] bte = new byte[256];
bte = poolConn.readBuffer();
String sBuff = new String(bte);
//String sBuff = new String(bte, "Cp850");
System.out.println(sBuff);
I'm using JDK 1.3.1 on W2K. The problem is when i try to connect to a WNT or W2K machine, it doesn't happen when i connect to a Linux or to a Solaris machine.
Anybody knows how to avoid or to convert again these characters?
Thanks in advance.

Answer 1

The ansi codes should be able to be ignored, the trick is figuring out the patterns to ignore. It looks like they all satisfy a pattern like...
"ESC[" {any non-alpha characters} {alpha character}
You could apply a regular expression over every string you get back to remove these patterns from the string.
Any idea why it's printing ANSI? It doesn't do it when you just run cmd.exe and capture the output.