EUC_TW.java revision 8845:4be14673b9bf
1/* 2 * Copyright (c) 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 26package build.tools.charsetmapping; 27 28import java.io.*; 29import java.util.ArrayList; 30import java.util.Scanner; 31import java.util.Formatter; 32import java.util.regex.*; 33import java.nio.charset.*; 34import static build.tools.charsetmapping.Utils.*; 35 36public class EUC_TW { 37 38 static char[] toCharArray(int[] db, 39 int b1Min, int b1Max, 40 int b2Min, int b2Max) 41 { 42 char[] ca = new char[(b1Max - b1Min + 1) * (b2Max - b2Min + 1)]; 43 int off = 0; 44 for (int b1 = b1Min; b1 <= b1Max; b1++) { 45 for (int b2 = b2Min; b2 <= b2Max; b2++) { 46 ca[off++] = (char)(db[b1 * 256 + b2] & 0xffff); 47 } 48 } 49 return ca; 50 } 51 52 static char[] toCharArray(byte[] ba, 53 int b1Min, int b1Max, 54 int b2Min, int b2Max) 55 { 56 char[] ca = new char[(b1Max - b1Min + 1) * (b2Max - b2Min + 1)]; 57 int off = 0; 58 for (int b1 = b1Min; b1 <= b1Max; b1++) { 59 int b2 = b2Min; 60 while (b2 <= b2Max) { 61 ca[off++] = (char)(((ba[b1 * 256 + b2++] & 0xff) << 8) | 62 (ba[b1 * 256 + b2++] & 0xff)); 63 } 64 } 65 return ca; 66 } 67 68 private static int initC2BIndex(char[] index) { 69 int off = 0; 70 for (int i = 0; i < index.length; i++) { 71 if (index[i] != 0) { 72 index[i] = (char)off; 73 off += 0x100; 74 } else { 75 index[i] = UNMAPPABLE_ENCODING; 76 } 77 } 78 return off; 79 } 80 81 private static Pattern euctw = Pattern.compile("(?:8ea)?(\\p{XDigit}++)\\s++(\\p{XDigit}++)?\\s*+.*"); 82 83 static void genClass(String args[]) throws Exception 84 { 85 InputStream is = new FileInputStream(new File(args[0], "euc_tw.map")); 86 PrintStream ps = new PrintStream(new File(args[1], "EUC_TWMapping.java"), 87 "ISO-8859-1"); 88 String copyright = getCopyright(new File(args[3])); 89 90 91 // ranges of byte1 and byte2, something should come from a "config" file 92 int b1Min = 0xa1; 93 int b1Max = 0xfe; 94 int b2Min = 0xa1; 95 int b2Max = 0xfe; 96 97 try { 98 int[][] db = new int[8][0x10000]; // doublebyte 99 byte[] suppFlag = new byte[0x10000]; // doublebyte 100 char[] indexC2B = new char[256]; 101 char[] indexC2BSupp = new char[256]; 102 103 for (int i = 0; i < 8; i++) 104 for (int j = 0; j < 0x10000; j++) 105 db[i][j] = UNMAPPABLE_DECODING; 106 107 Parser p = new Parser(is, euctw); 108 Entry e = null; 109 while ((e = p.next()) != null) { 110 int plane = 0; 111 if (e.bs >= 0x10000) { 112 plane = ((e.bs >> 16) & 0xff) - 1; 113 if (plane >= 14) 114 plane = 7; 115 e.bs = e.bs & 0xffff; 116 } 117 db[plane][e.bs] = e.cp; 118 if (e.cp < 0x10000) { 119 indexC2B[e.cp>>8] = 1; 120 } else { 121 indexC2BSupp[(e.cp&0xffff)>>8] = 1; 122 suppFlag[e.bs] |= (1 << plane); 123 } 124 } 125 126 StringBuilder sb = new StringBuilder(); 127 Output out = new Output(new Formatter(sb)); 128 129 out.format(copyright); 130 out.format("%n// -- This file was mechanically generated: Do not edit! -- //%n"); 131 out.format("package sun.nio.cs.ext;%n%n"); 132 out.format("class EUC_TWMapping {%n%n"); 133 134 // boundaries 135 out.format(" final static int b1Min = 0x%x;%n", b1Min); 136 out.format(" final static int b1Max = 0x%x;%n", b1Max); 137 out.format(" final static int b2Min = 0x%x;%n", b2Min); 138 out.format(" final static int b2Max = 0x%x;%n", b2Max); 139 140 // b2c tables 141 out.format("%n final static String[] b2c = {%n"); 142 for (int plane = 0; plane < 8; plane++) { 143 out.format(" // Plane %d%n", plane); 144 out.format(toCharArray(db[plane], b1Min, b1Max, b2Min, b2Max), 145 ","); 146 out.format("%n"); 147 } 148 out.format(" };%n"); 149 150 // c2bIndex 151 out.format("%n static final int C2BSIZE = 0x%x;%n", 152 initC2BIndex(indexC2B)); 153 out.format("%n static char[] c2bIndex = new char[] {%n"); 154 out.format(indexC2B); 155 out.format(" };%n"); 156 157 // c2bIndexSupp 158 out.format("%n static final int C2BSUPPSIZE = 0x%x;%n", 159 initC2BIndex(indexC2BSupp)); 160 out.format("%n static char[] c2bSuppIndex = new char[] {%n"); 161 out.format(indexC2BSupp); 162 out.format(" };%n"); 163 164 // suppFlags 165 out.format("%n static String b2cIsSuppStr =%n"); 166 out.format(toCharArray(suppFlag, b1Min, b1Max, b2Min, b2Max), 167 ";"); 168 out.format("}"); 169 out.close(); 170 171 ps.println(sb.toString()); 172 ps.close(); 173 } catch (Exception x) { 174 x.printStackTrace(); 175 } 176 } 177} 178