1 /*

     2  * Copyright (c) 2003, 2012, 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.ByteBuffer;

    29 import java.nio.CharBuffer;

    30 import java.nio.charset.Charset;

    31 import java.nio.charset.CharsetDecoder;

    32 import java.nio.charset.CharsetEncoder;

    33 import java.nio.charset.CoderResult;

    34 import sun.nio.cs.HistoricallyNamedCharset;

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

    36 

    37 public class EUC_JP_Open

    38     extends Charset

    39     implements HistoricallyNamedCharset

    40 {

    41     public EUC_JP_Open() {

    42         super("x-eucJP-Open", ExtendedCharsets.aliasesFor("x-eucJP-Open"));

    43     }

    44 

    45     public String historicalName() {

    46         return "EUC_JP_Solaris";

    47     }

    48 

    49     public boolean contains(Charset cs) {

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

    51                 || (cs instanceof JIS_X_0201)

    52                 || (cs instanceof EUC_JP));

    53     }

    54 

    55     public CharsetDecoder newDecoder() {

    56         return new Decoder(this);

    57     }

    58 

    59     public CharsetEncoder newEncoder() {

    60         return new Encoder(this);

    61     }

    62 

    63     private static class Decoder extends EUC_JP.Decoder {

    64         private static DoubleByte.Decoder DEC0208_Solaris =

    65             (DoubleByte.Decoder)new JIS_X_0208_Solaris().newDecoder();

    66         private static DoubleByte.Decoder DEC0212_Solaris =

    67             (DoubleByte.Decoder)new JIS_X_0212_Solaris().newDecoder();

    68 

    69         private Decoder(Charset cs) {

    70             // JIS_X_0208_Solaris only has the "extra" mappings, it

    71             // does not have the JIS_X_0208 entries

    72             super(cs, 0.5f, 1.0f, DEC0201, DEC0208, DEC0212_Solaris);

    73         }

    74 

    75         protected char decodeDouble(int byte1, int byte2) {

    76             char c = super.decodeDouble(byte1, byte2);

    77             if (c == UNMAPPABLE_DECODING)

    78                 return DEC0208_Solaris.decodeDouble(byte1 - 0x80, byte2 - 0x80);

    79             return c;

    80         }

    81     }

    82 

    83     private static class Encoder extends EUC_JP.Encoder {

    84         private static DoubleByte.Encoder ENC0208_Solaris =

    85             (DoubleByte.Encoder)new JIS_X_0208_Solaris().newEncoder();

    86 

    87         private static DoubleByte.Encoder ENC0212_Solaris =

    88             (DoubleByte.Encoder)new JIS_X_0212_Solaris().newEncoder();

    89 

    90         private Encoder(Charset cs) {

    91             // The EUC_JP_Open has some interesting tweak for the

    92             // encoding, so can't just pass the euc0208_solaris to

    93             // the euc_jp. Have to override the encodeDouble() as

    94             // showed below (mapping testing catches this).

    95             // super(cs, 3.0f, 3.0f, ENC0201, ENC0208_Solaris, ENC0212_Solaris);

    96             super(cs);

    97         }

    98 

    99         protected int encodeDouble(char ch) {

   100             int b = super.encodeDouble(ch);

   101             if (b != UNMAPPABLE_ENCODING)

   102                 return b;

   103             b = ENC0208_Solaris.encodeChar(ch);

   104             if (b != UNMAPPABLE_ENCODING && b > 0x7500) {

   105                 return 0x8F8080 + ENC0212_Solaris.encodeChar(ch);

   106             }

   107             return b == UNMAPPABLE_ENCODING ? b : b + 0x8080;

   108 

   109         }

   110     }

   111 }