1 /*
2 * Copyright (c) 2010, 2013, 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.ArrayList;
30 import java.util.Scanner;
31 import java.util.Formatter;
32 import java.util.regex.*;
33 import java.nio.charset.*;
34 import static build.tools.charsetmapping.Utils.*;
35
36 public 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 pkg, 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[7], "EUC_TW.java"));
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 %s;%n%n", pkg);
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 }