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.  Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
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 *
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.
24 */
25
26package sun.nio.cs.ext;
27
28import java.nio.charset.Charset;
29import java.nio.charset.CharsetEncoder;
30import java.nio.charset.CharsetDecoder;
31import sun.nio.cs.DoubleByte;
32import sun.nio.cs.*;
33import static sun.nio.cs.CharsetMapping.*;
34
35public class MS932_0213 extends Charset {
36    public MS932_0213() {
37        super("x-MS932_0213", ExtendedCharsets.aliasesFor("x-MS932_0213"));
38    }
39
40    public boolean contains(Charset cs) {
41        return ((cs.name().equals("US-ASCII"))
42                || (cs instanceof MS932)
43                || (cs instanceof MS932_0213));
44    }
45
46    public CharsetDecoder newDecoder() {
47        return new Decoder(this);
48    }
49
50    public CharsetEncoder newEncoder() {
51        return new Encoder(this);
52    }
53
54    protected static class Decoder extends SJIS_0213.Decoder {
55        static DoubleByte.Decoder decMS932 =
56            (DoubleByte.Decoder)new MS932().newDecoder();
57        protected Decoder(Charset cs) {
58            super(cs);
59        }
60
61        protected char decodeDouble(int b1, int b2) {
62            char c = decMS932.decodeDouble(b1, b2);
63            if (c == UNMAPPABLE_DECODING)
64                return super.decodeDouble(b1, b2);
65            return c;
66        }
67    }
68
69    protected static class Encoder extends SJIS_0213.Encoder {
70        // we only use its encodeChar() method
71        static DoubleByte.Encoder encMS932 =
72            (DoubleByte.Encoder)new MS932().newEncoder();
73        protected Encoder(Charset cs) {
74            super(cs);
75        }
76
77        protected int encodeChar(char ch) {
78            int db = encMS932.encodeChar(ch);
79            if (db == UNMAPPABLE_ENCODING)
80                return super.encodeChar(ch);
81            return db;
82        }
83    }
84}
85