1/*
2 * Copyright (c) 2002, 2010, 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 $PACKAGE$;
27
28import java.nio.charset.Charset;
29import java.nio.charset.CharsetDecoder;
30import java.nio.charset.CharsetEncoder;
31import sun.nio.cs.DoubleByte;
32import sun.nio.cs.HKSCS;
33import sun.nio.cs.HistoricallyNamedCharset;
34import static sun.nio.cs.CharsetMapping.*;
35
36public class MS950_HKSCS_XP extends Charset
37{
38    public MS950_HKSCS_XP() {
39        super("x-MS950-HKSCS-XP", $ALIASES$);
40    }
41
42    public boolean contains(Charset cs) {
43        return ((cs.name().equals("US-ASCII"))
44                || (cs instanceof MS950)
45                || (cs instanceof MS950_HKSCS_XP));
46    }
47
48    public CharsetDecoder newDecoder() {
49        return new Decoder(this);
50    }
51
52    public CharsetEncoder newEncoder() {
53        return new Encoder(this);
54    }
55
56    static class Decoder extends HKSCS.Decoder {
57        private static DoubleByte.Decoder ms950 =
58            (DoubleByte.Decoder)new MS950().newDecoder();
59
60        /*
61         * Note current decoder decodes 0x8BC2 --> U+F53A
62         * ie. maps to Unicode PUA.
63         * Unaccounted discrepancy between this mapping
64         * inferred from MS950/windows-950 and the published
65         * MS HKSCS mappings which maps 0x8BC2 --> U+5C22
66         * a character defined with the Unified CJK block
67         */
68        private static char[][] b2cBmp = new char[0x100][];
69        static {
70            initb2c(b2cBmp, HKSCS_XPMapping.b2cBmpStr);
71        }
72
73        public char decodeDoubleEx(int b1, int b2) {
74            return UNMAPPABLE_DECODING;
75        }
76
77        private Decoder(Charset cs) {
78            super(cs, ms950, b2cBmp, null);
79        }
80    }
81
82    private static class Encoder extends HKSCS.Encoder {
83        private static DoubleByte.Encoder ms950 =
84            (DoubleByte.Encoder)new MS950().newEncoder();
85
86        /*
87         * Note current encoder encodes U+F53A --> 0x8BC2
88         * Published MS HKSCS mappings show
89         * U+5C22 <--> 0x8BC2
90         */
91        static char[][] c2bBmp = new char[0x100][];
92        static {
93            initc2b(c2bBmp, HKSCS_XPMapping.b2cBmpStr, null);
94        }
95
96        public int encodeSupp(int cp) {
97            return UNMAPPABLE_ENCODING;
98        }
99
100        private Encoder(Charset cs) {
101            super(cs, ms950, c2bBmp, null);
102        }
103    }
104}
105