1 /*

     2  * Copyright (c) 2003, 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.io;

    27 

    28 import sun.nio.cs.ext.JIS_X_0208_Solaris_Encoder;

    29 

    30 /**

    31  * @author Limin Shi

    32  * @author Mark Son-Bell

    33  * @author Ian Little

    34  *

    35  * PCK char->byte converter for Solaris platform containing additional

    36  * mappings for vendor defined chars (NEC row 13 & IBM extension chars)

    37  * (bugID 4765370)

    38  */

    39 public class CharToBytePCK extends CharToByteSJIS {

    40     CharToByteJIS0201 cbJIS0201 = new CharToByteJIS0201();

    41     short[] j0208Index1 = JIS_X_0208_Solaris_Encoder.getIndex1();

    42     String[] j0208Index2 = JIS_X_0208_Solaris_Encoder.getIndex2();

    43 

    44     public String getCharacterEncoding() {

    45         return "PCK";

    46     }

    47 

    48     protected int convSingleByte(char inputChar, byte[] outputByte) {

    49         byte b;

    50 

    51         // \u0000 - \u007F map straight through

    52         if ((inputChar & 0xFF80) == 0) {

    53             outputByte[0] = (byte)inputChar;

    54             return 1;

    55         }

    56 

    57         if ((b = cbJIS0201.getNative(inputChar)) == 0)

    58             return 0;

    59 

    60         outputByte[0] = b;

    61         return 1;

    62     }

    63 

    64     protected int getNative(char ch) {

    65         int result = 0;

    66 

    67          switch (ch) {

    68             case '\u2015':

    69                 return 0x815C;

    70             case '\u2014':

    71                 return 0;

    72             default:

    73                 break;

    74         }

    75 

    76         if ((result = super.getNative(ch)) != 0) {

    77             return result;

    78         } else {

    79             int offset = j0208Index1[ch >> 8] << 8;

    80             int pos = j0208Index2[offset >> 12].charAt((offset & 0xfff) + (ch & 0xff));

    81 

    82             if (pos != 0) {

    83                 /*

    84                  * This algorithm for converting from JIS to SJIS comes from Ken Lunde's

    85                  * "Understanding Japanese Information Processing", pg 163.

    86                  */

    87                 int c1 = (pos >> 8) & 0xff;

    88                 int c2 = pos & 0xff;

    89                 int rowOffset = c1 < 0x5F ? 0x70 : 0xB0;

    90                 int cellOffset = (c1 % 2 == 1) ? (c2 > 0x5F ? 0x20 : 0x1F) : 0x7E;

    91                 result =  ((((c1 + 1 ) >> 1) + rowOffset) << 8) | (c2 + cellOffset);

    92             }

    93         }

    94         return result;

    95     }

    96 }