author | sherman |
Tue, 24 Jul 2012 12:17:39 -0700 | |
changeset 13366 | 2f5fdf6d8c22 |
parent 5506 | 202f599c92aa |
permissions | -rw-r--r-- |
2 | 1 |
/* |
5506 | 2 |
* Copyright (c) 2002, 2006, Oracle and/or its affiliates. All rights reserved. |
2 | 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 |
|
5506 | 7 |
* published by the Free Software Foundation. Oracle designates this |
2 | 8 |
* particular file as subject to the "Classpath" exception as provided |
5506 | 9 |
* by Oracle in the LICENSE file that accompanied this code. |
2 | 10 |
* |
11 |
* This code is distributed in the hope that it will be useful, but WITHOUT |
|
12 |
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
|
13 |
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
|
14 |
* version 2 for more details (a copy is included in the LICENSE file that |
|
15 |
* accompanied this code). |
|
16 |
* |
|
17 |
* You should have received a copy of the GNU General Public License version |
|
18 |
* 2 along with this work; if not, write to the Free Software Foundation, |
|
19 |
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
|
20 |
* |
|
5506 | 21 |
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
22 |
* or visit www.oracle.com if you need additional information or have any |
|
23 |
* questions. |
|
2 | 24 |
*/ |
25 |
||
26 |
/* |
|
27 |
*/ |
|
28 |
||
29 |
package sun.nio.cs.ext; |
|
30 |
||
31 |
import java.nio.charset.Charset; |
|
32 |
import java.nio.ByteBuffer; |
|
33 |
import java.nio.CharBuffer; |
|
34 |
import java.nio.charset.CharsetDecoder; |
|
35 |
import java.nio.charset.CharsetEncoder; |
|
36 |
import java.nio.charset.CoderResult; |
|
37 |
import sun.nio.cs.HistoricallyNamedCharset; |
|
38 |
||
39 |
public class ISO2022_CN_CNS extends ISO2022 implements HistoricallyNamedCharset |
|
40 |
{ |
|
41 |
public ISO2022_CN_CNS() { |
|
42 |
super("x-ISO-2022-CN-CNS", ExtendedCharsets.aliasesFor("x-ISO-2022-CN-CNS")); |
|
43 |
} |
|
44 |
||
45 |
public boolean contains(Charset cs) { |
|
46 |
// overlapping repertoire of EUC_TW, CNS11643 |
|
47 |
return ((cs instanceof EUC_TW) || |
|
48 |
(cs.name().equals("US-ASCII")) || |
|
49 |
(cs instanceof ISO2022_CN_CNS)); |
|
50 |
} |
|
51 |
||
52 |
public String historicalName() { |
|
53 |
return "ISO2022CN_CNS"; |
|
54 |
} |
|
55 |
||
56 |
public CharsetDecoder newDecoder() { |
|
57 |
return new ISO2022_CN.Decoder(this); |
|
58 |
} |
|
59 |
||
60 |
public CharsetEncoder newEncoder() { |
|
61 |
return new Encoder(this); |
|
62 |
} |
|
63 |
||
64 |
private static class Encoder extends ISO2022.Encoder { |
|
65 |
||
66 |
public Encoder(Charset cs) |
|
67 |
{ |
|
68 |
super(cs); |
|
69 |
SODesig = "$)G"; |
|
70 |
SS2Desig = "$*H"; |
|
71 |
SS3Desig = "$+I"; |
|
72 |
||
73 |
try { |
|
74 |
Charset cset = Charset.forName("EUC_TW"); // CNS11643 |
|
75 |
ISOEncoder = cset.newEncoder(); |
|
76 |
} catch (Exception e) { } |
|
77 |
} |
|
78 |
||
3623
4e71b4e83158
6730652: CharsetEncoder.canEncode(char) returns incorrect values for some charsets
sherman
parents:
2
diff
changeset
|
79 |
private byte[] bb = new byte[4]; |
4e71b4e83158
6730652: CharsetEncoder.canEncode(char) returns incorrect values for some charsets
sherman
parents:
2
diff
changeset
|
80 |
public boolean canEncode(char c) { |
4e71b4e83158
6730652: CharsetEncoder.canEncode(char) returns incorrect values for some charsets
sherman
parents:
2
diff
changeset
|
81 |
int n = 0; |
4e71b4e83158
6730652: CharsetEncoder.canEncode(char) returns incorrect values for some charsets
sherman
parents:
2
diff
changeset
|
82 |
return (c <= '\u007f' || |
4e71b4e83158
6730652: CharsetEncoder.canEncode(char) returns incorrect values for some charsets
sherman
parents:
2
diff
changeset
|
83 |
(n = ((EUC_TW.Encoder)ISOEncoder).toEUC(c, bb)) == 2 || |
4e71b4e83158
6730652: CharsetEncoder.canEncode(char) returns incorrect values for some charsets
sherman
parents:
2
diff
changeset
|
84 |
(n == 4 && bb[0] == SS2 && |
4e71b4e83158
6730652: CharsetEncoder.canEncode(char) returns incorrect values for some charsets
sherman
parents:
2
diff
changeset
|
85 |
(bb[1] == PLANE2 || bb[1] == PLANE3))); |
4e71b4e83158
6730652: CharsetEncoder.canEncode(char) returns incorrect values for some charsets
sherman
parents:
2
diff
changeset
|
86 |
} |
4e71b4e83158
6730652: CharsetEncoder.canEncode(char) returns incorrect values for some charsets
sherman
parents:
2
diff
changeset
|
87 |
|
2 | 88 |
/* |
89 |
* Since ISO2022-CN-CNS possesses a CharsetEncoder |
|
90 |
* without the corresponding CharsetDecoder half the |
|
91 |
* default replacement check needs to be overridden |
|
92 |
* since the parent class version attempts to |
|
93 |
* decode 0x3f (?). |
|
94 |
*/ |
|
95 |
||
96 |
public boolean isLegalReplacement(byte[] repl) { |
|
97 |
// 0x3f is OK as the replacement byte |
|
98 |
return (repl.length == 1 && repl[0] == (byte) 0x3f); |
|
99 |
} |
|
100 |
} |
|
101 |
} |