1 /*
   2  * Copyright (c) 2008, 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 build.tools.charsetmapping;
  27 
  28 import java.io.*;
  29 import java.util.regex.*;
  30 import java.util.*;
  31 import static build.tools.charsetmapping.Utils.*;
  32 
  33 public class JIS0213 {
  34 
  35     // regex pattern to parse the "jis0213.map" file
  36     static Pattern sjis0213 = Pattern.compile("0x(\\p{XDigit}++)\\s++U\\+(\\p{XDigit}++)(?:\\+(\\p{XDigit}++))?\\s++#.*");
  37 
  38     static void genClass(String argv[]) throws IOException
  39     {
  40         InputStream in = new FileInputStream(argv[0]) ;
  41         OutputStream out = new FileOutputStream(argv[1]);
  42 
  43         int[] sb = new int[0x100];                         // singlebyte
  44         int[] db = new int[0x10000];                       // doublebyte
  45         int[] indexC2B = new int[256];
  46         Entry[] supp = new Entry[0x10000];
  47         Entry[] comp = new Entry[0x100];
  48         int suppTotal = 0;
  49         int compTotal = 0;
  50 
  51         int b1Min1 = 0x81;
  52         int b1Max1 = 0x9f;
  53         int b1Min2 = 0xe0;
  54         int b1Max2 = 0xfc;
  55         int b2Min = 0x40;
  56         int b2Max = 0xfe;
  57 
  58         //init
  59         for (int i = 0; i < 0x80; i++) sb[i] = i;
  60         for (int i = 0x80; i < 0x100; i++) sb[i] = UNMAPPABLE_DECODING;
  61         for (int i = 0; i < 0x10000; i++) db[i] = UNMAPPABLE_DECODING;
  62         try {
  63             Parser p = new Parser(in, sjis0213);
  64             Entry  e = null;
  65             while ((e = p.next()) != null) {
  66                 if (e.cp2 != 0) {
  67                     comp[compTotal++] = e;
  68                 } else {
  69                     if (e.cp <= 0xffff) {
  70                         if (e.bs <= 0xff)
  71                             sb[e.bs] = e.cp;
  72                         else
  73                             db[e.bs] = e.cp;
  74                         indexC2B[e.cp>>8] = 1;
  75                     } else {
  76                         supp[suppTotal++] = e;
  77                     }
  78                 }
  79             }
  80             ByteArrayOutputStream baos = new ByteArrayOutputStream();
  81             // c2b Index Table, always the first one
  82             writeINDEXC2B(baos, indexC2B);
  83             writeSINGLEBYTE(baos, sb);
  84             writeDOUBLEBYTE1(baos, db, b1Min1, b1Max1, b2Min, b2Max);
  85             writeDOUBLEBYTE2(baos, db, b1Min2, b1Max2, b2Min, b2Max);
  86             writeSUPPLEMENT(baos, supp, suppTotal);
  87             writeCOMPOSITE(baos, comp, compTotal);
  88             writeSIZE(out, baos.size());
  89             baos.writeTo(out);
  90             out.close();
  91         } catch (Exception x) {
  92             x.printStackTrace();
  93         }
  94     }
  95 
  96     static Comparator<Entry> comparatorCP =
  97         new Comparator<Entry>() {
  98             public int compare(Entry m1, Entry m2) {
  99                 return m1.cp - m2.cp;
 100             }
 101             public boolean equals(Object obj) {
 102                 return this == obj;
 103             }
 104     };
 105 
 106     // tags of different charset mapping tables
 107     private final static int MAP_SINGLEBYTE      = 0x1; // 0..256  : c
 108     private final static int MAP_DOUBLEBYTE1     = 0x2; // min..max: c
 109     private final static int MAP_DOUBLEBYTE2     = 0x3; // min..max: c [DB2]
 110     private final static int MAP_SUPPLEMENT      = 0x5; //           db,c
 111     private final static int MAP_SUPPLEMENT_C2B  = 0x6; //           c,db
 112     private final static int MAP_COMPOSITE       = 0x7; //           db,base,cc
 113     private final static int MAP_INDEXC2B        = 0x8; // index table of c->bb
 114 
 115     private static final void writeShort(OutputStream out, int data)
 116         throws IOException
 117     {
 118         out.write((data >>> 8) & 0xFF);
 119         out.write((data      ) & 0xFF);
 120     }
 121 
 122     private static final void writeShortArray(OutputStream out,
 123                                               int type,
 124                                               int[] array,
 125                                               int off,
 126                                               int size)   // exclusive
 127         throws IOException
 128     {
 129         writeShort(out, type);
 130         writeShort(out, size);
 131         for (int i = off; i < size; i++) {
 132             writeShort(out, array[off+i]);
 133         }
 134     }
 135 
 136     private static final void writeSIZE(OutputStream out, int data)
 137         throws IOException
 138     {
 139         out.write((data >>> 24) & 0xFF);
 140         out.write((data >>> 16) & 0xFF);
 141         out.write((data >>>  8) & 0xFF);
 142         out.write((data       ) & 0xFF);
 143     }
 144 
 145     private static void writeINDEXC2B(OutputStream out, int[] indexC2B)
 146         throws IOException
 147     {
 148         writeShort(out, MAP_INDEXC2B);
 149         writeShort(out, indexC2B.length);
 150         int off = 0;
 151         for (int i = 0; i < indexC2B.length; i++) {
 152             if (indexC2B[i] != 0) {
 153                 writeShort(out, off);
 154                 off += 256;
 155             } else {
 156                 writeShort(out, -1);
 157             }
 158         }
 159     }
 160 
 161     private static void writeSINGLEBYTE(OutputStream out, int[] sb)
 162         throws IOException
 163     {
 164         writeShortArray(out, MAP_SINGLEBYTE, sb, 0, 256);
 165     }
 166 
 167     private static void writeDOUBLEBYTE(OutputStream out,
 168                                         int type,
 169                                         int[] db,
 170                                         int b1Min, int b1Max,
 171                                         int b2Min, int b2Max)
 172         throws IOException
 173     {
 174         writeShort(out, type);
 175         writeShort(out, b1Min);
 176         writeShort(out, b1Max);
 177         writeShort(out, b2Min);
 178         writeShort(out, b2Max);
 179         writeShort(out, (b1Max - b1Min + 1) * (b2Max - b2Min + 1));
 180 
 181         for (int b1 = b1Min; b1 <= b1Max; b1++) {
 182             for (int b2 = b2Min; b2 <= b2Max; b2++) {
 183                 writeShort(out, db[b1 * 256 + b2]);
 184             }
 185         }
 186     }
 187 
 188     private static void writeDOUBLEBYTE1(OutputStream out,
 189                                         int[] db,
 190                                         int b1Min, int b1Max,
 191                                         int b2Min, int b2Max)
 192         throws IOException
 193     {
 194         writeDOUBLEBYTE(out, MAP_DOUBLEBYTE1, db, b1Min, b1Max, b2Min, b2Max);
 195     }
 196 
 197     private static void writeDOUBLEBYTE2(OutputStream out,
 198                                         int[] db,
 199                                         int b1Min, int b1Max,
 200                                         int b2Min, int b2Max)
 201         throws IOException
 202     {
 203         writeDOUBLEBYTE(out, MAP_DOUBLEBYTE2, db, b1Min, b1Max, b2Min, b2Max);
 204     }
 205 
 206     // the c2b table is output as well
 207     private static void writeSUPPLEMENT(OutputStream out, Entry[] supp, int size)
 208         throws IOException
 209     {
 210         writeShort(out, MAP_SUPPLEMENT);
 211         writeShort(out, size * 2);
 212         // db at first half, cc at the low half
 213         for (int i = 0; i < size; i++) {
 214             writeShort(out, supp[i].bs);
 215         }
 216         for (int i = 0; i < size; i++) {
 217             writeShort(out, supp[i].cp);
 218         }
 219 
 220         //c2b
 221         writeShort(out, MAP_SUPPLEMENT_C2B);
 222         writeShort(out, size*2);
 223         Arrays.sort(supp, 0, size, comparatorCP);
 224         for (int i = 0; i < size; i++) {
 225             writeShort(out, supp[i].cp);
 226         }
 227         for (int i = 0; i < size; i++) {
 228             writeShort(out, supp[i].bs);
 229         }
 230     }
 231 
 232     private static void writeCOMPOSITE(OutputStream out, Entry[] comp, int size)
 233         throws IOException
 234     {
 235         writeShort(out, MAP_COMPOSITE);
 236         writeShort(out, size*3);
 237         // comp is sorted already
 238         for (int i = 0; i < size; i++) {
 239             writeShort(out, (char)comp[i].bs);
 240             writeShort(out, (char)comp[i].cp);
 241             writeShort(out, (char)comp[i].cp2);
 242         }
 243     }
 244 }