1 /*
2  * Copyright (c) 2008, Oracle and/or its affiliates. All rights reserved.
3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4  *
5  * This code is free software; you can redistribute it and/or modify it
6  * under the terms of the GNU General Public License version 2 only, as
7  * published by the Free Software Foundation.
8  *
9  * This code is distributed in the hope that it will be useful, but WITHOUT
10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12  * version 2 for more details (a copy is included in the LICENSE file that
13  * accompanied this code).
14  *
15  * You should have received a copy of the GNU General Public License version
16  * 2 along with this work; if not, write to the Free Software Foundation,
17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18  *
19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20  * or visit www.oracle.com if you need additional information or have any
21  * questions.
22  */
23 
24 /**/
25 
26 public class Decode {
isAscii(char c)27     private static boolean isAscii(char c) {
28         return c < '\u0080';
29     }
30 
isPrintable(char c)31     private static boolean isPrintable(char c) {
32         return ('\u0020' < c) && (c < '\u007f');
33     }
34 
main(String[] args)35     public static void main(String[] args) throws Throwable {
36         if (args.length < 2)
37             throw new Exception("Usage: java Decode CHARSET BYTE [BYTE ...]");
38         String cs = args[0];
39         byte[] bytes = new byte[args.length-1];
40         for (int i = 1; i < args.length; i++) {
41             String arg = args[i];
42             bytes[i-1] =
43                 (arg.length() == 1 && isAscii(arg.charAt(0))) ?
44                 (byte) arg.charAt(0) :
45                 arg.equals("ESC") ? 0x1b :
46                 arg.equals("SO")  ? 0x0e :
47                 arg.equals("SI")  ? 0x0f :
48                 arg.equals("SS2") ? (byte) 0x8e :
49                 arg.equals("SS3") ? (byte) 0x8f :
50                 arg.matches("0x.*") ? Integer.decode(arg).byteValue() :
51                 Integer.decode("0x"+arg).byteValue();
52         }
53         String s = new String(bytes, cs);
54 
55         for (int j = 0; j < s.length(); j++) {
56             if (j > 0)
57                 System.out.print(' ');
58             char c = s.charAt(j);
59             if (isPrintable(c))
60                 System.out.print(c);
61             else if (c == '\u001b') System.out.print("ESC");
62             else
63                 System.out.printf("\\u%04x", (int) c);
64         }
65         System.out.print("\n");
66     }
67 }
68