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 

    26 package sun.nio.cs.ext;

    27 

    28 import java.nio.charset.Charset;

    29 import java.nio.charset.CharsetEncoder;

    30 import java.nio.charset.CharsetDecoder;

    31 import static sun.nio.cs.CharsetMapping.*;

    32 

    33 public class MS932_0213 extends Charset {

    34     public MS932_0213() {

    35         super("x-MS932_0213", ExtendedCharsets.aliasesFor("MS932_0213"));

    36     }

    37 

    38     public boolean contains(Charset cs) {

    39         return ((cs.name().equals("US-ASCII"))

    40                 || (cs instanceof MS932)

    41                 || (cs instanceof MS932_0213));

    42     }

    43 

    44     public CharsetDecoder newDecoder() {

    45         return new Decoder(this);

    46     }

    47 

    48     public CharsetEncoder newEncoder() {

    49         return new Encoder(this);

    50     }

    51 

    52     protected static class Decoder extends SJIS_0213.Decoder {

    53         static DoubleByte.Decoder decMS932 =

    54             (DoubleByte.Decoder)new MS932().newDecoder();

    55         protected Decoder(Charset cs) {

    56             super(cs);

    57         }

    58 

    59         protected char decodeDouble(int b1, int b2) {

    60             char c = decMS932.decodeDouble(b1, b2);

    61             if (c == UNMAPPABLE_DECODING)

    62                 return super.decodeDouble(b1, b2);

    63             return c;

    64         }

    65     }

    66 

    67     protected static class Encoder extends SJIS_0213.Encoder {

    68         // we only use its encodeChar() method

    69         static DoubleByte.Encoder encMS932 =

    70             (DoubleByte.Encoder)new MS932().newEncoder();

    71         protected Encoder(Charset cs) {

    72             super(cs);

    73         }

    74 

    75         protected int encodeChar(char ch) {

    76             int db = encMS932.encodeChar(ch);

    77             if (db == UNMAPPABLE_ENCODING)

    78                 return super.encodeChar(ch);

    79             return db;

    80         }

    81     }

    82 }