1 /*

     2  * Copyright (c) 2004, 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 

    26 package sun.nio.cs.ext;

    27 

    28 import java.nio.charset.Charset;

    29 import java.nio.charset.CharsetDecoder;

    30 import java.nio.charset.CharsetEncoder;

    31 import sun.nio.cs.HistoricallyNamedCharset;

    32 import java.util.Arrays;

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

    34 

    35 public class Big5_Solaris extends Charset implements HistoricallyNamedCharset

    36 {

    37     public Big5_Solaris() {

    38         super("x-Big5-Solaris", ExtendedCharsets.aliasesFor("x-Big5-Solaris"));

    39     }

    40 

    41     public String historicalName() {

    42         return "Big5_Solaris";

    43     }

    44 

    45     public boolean contains(Charset cs) {

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

    47                 || (cs instanceof Big5)

    48                 || (cs instanceof Big5_Solaris));

    49     }

    50 

    51     public CharsetDecoder newDecoder() {

    52         initb2c();

    53         return new  DoubleByte.Decoder(this, b2c, b2cSB, 0x40, 0xfe);

    54     }

    55 

    56     public CharsetEncoder newEncoder() {

    57         initc2b();

    58         return new DoubleByte.Encoder(this, c2b, c2bIndex);

    59     }

    60 

    61     static char[][] b2c;

    62     static char[] b2cSB;

    63     private static volatile boolean b2cInitialized = false;

    64 

    65     static void initb2c() {

    66         if (b2cInitialized)

    67             return;

    68         synchronized (Big5_Solaris.class) {

    69             if (b2cInitialized)

    70                 return;

    71             Big5.initb2c();

    72             b2c = Big5.b2c.clone();

    73             // Big5 Solaris implementation has 7 additional mappings

    74             int[] sol = new int[] {

    75                 0xF9D6, 0x7881,

    76                 0xF9D7, 0x92B9,

    77                 0xF9D8, 0x88CF,

    78                 0xF9D9, 0x58BB,

    79                 0xF9DA, 0x6052,

    80                 0xF9DB, 0x7CA7,

    81                 0xF9DC, 0x5AFA };

    82             if (b2c[0xf9] == DoubleByte.B2C_UNMAPPABLE) {

    83                 b2c[0xf9] = new char[0xfe - 0x40 + 1];

    84                 Arrays.fill(b2c[0xf9], UNMAPPABLE_DECODING);

    85             }

    86 

    87             for (int i = 0; i < sol.length;) {

    88                 b2c[0xf9][sol[i++] & 0xff - 0x40] = (char)sol[i++];

    89             }

    90             b2cSB = Big5.b2cSB;

    91             b2cInitialized = true;

    92         }

    93     }

    94 

    95     static char[] c2b;

    96     static char[] c2bIndex;

    97     private static volatile boolean c2bInitialized = false;

    98 

    99     static void initc2b() {

   100         if (c2bInitialized)

   101             return;

   102         synchronized (Big5_Solaris.class) {

   103             if (c2bInitialized)

   104                 return;

   105             Big5.initc2b();

   106             c2b = Big5.c2b.clone();

   107             c2bIndex = Big5.c2bIndex.clone();

   108             int[] sol = new int[] {

   109                 0x7881, 0xF9D6,

   110                 0x92B9, 0xF9D7,

   111                 0x88CF, 0xF9D8,

   112                 0x58BB, 0xF9D9,

   113                 0x6052, 0xF9DA,

   114                 0x7CA7, 0xF9DB,

   115                 0x5AFA, 0xF9DC };

   116 

   117             for (int i = 0; i < sol.length;) {

   118                 int c = sol[i++];

   119                 // no need to check c2bIndex[c >>8], we know it points

   120                 // to the appropriate place.

   121                 c2b[c2bIndex[c >> 8] + (c & 0xff)] = (char)sol[i++];

   122             }

   123             c2bInitialized = true;

   124         }

   125     }

   126 }