MakeCharTables.java [plain text]
import gnu.java.lang.CharData;
public class MakeCharTables implements CharData
{
public static void main(String[] args)
{
System.out.println("/* java-chartables.h -- Character tables for java.lang.Character -*- c++ -*-\n"
+ " Copyright (C) 2002 Free Software Foundation, Inc.\n"
+ " *** This file is generated by scripts/MakeCharTables.java ***\n"
+ "\n"
+ "This file is part of GNU Classpath.\n"
+ "\n"
+ "GNU Classpath is free software; you can redistribute it and/or modify\n"
+ "it under the terms of the GNU General Public License as published by\n"
+ "the Free Software Foundation; either version 2, or (at your option)\n"
+ "any later version.\n"
+ "\n"
+ "GNU Classpath is distributed in the hope that it will be useful, but\n"
+ "WITHOUT ANY WARRANTY; without even the implied warranty of\n"
+ "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU\n"
+ "General Public License for more details.\n"
+ "\n"
+ "You should have received a copy of the GNU General Public License\n"
+ "along with GNU Classpath; see the file COPYING. If not, write to the\n"
+ "Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA\n"
+ "02111-1307 USA.\n"
+ "\n"
+ "Linking this library statically or dynamically with other modules is\n"
+ "making a combined work based on this library. Thus, the terms and\n"
+ "conditions of the GNU General Public License cover the whole\n"
+ "combination.\n"
+ "\n"
+ "As a special exception, the copyright holders of this library give you\n"
+ "permission to link this library with independent modules to produce an\n"
+ "executable, regardless of the license terms of these independent\n"
+ "modules, and to copy and distribute the resulting executable under\n"
+ "terms of your choice, provided that you also meet, for each linked\n"
+ "independent module, the terms and conditions of the license of that\n"
+ "module. An independent module is a module which is not derived from\n"
+ "or based on this library. If you modify this library, you may extend\n"
+ "this exception to your version of the library, but you are not\n"
+ "obligated to do so. If you do not wish to do so, delete this\n"
+ "exception statement from your version. */\n"
+ "\n"
+ "#ifndef __JAVA_CHARTABLES_H__\n"
+ "#define __JAVA_CHARTABLES_H__\n"
+ "\n"
+ "// These tables are automatically generated by scripts/MakeCharTables.java.\n"
+ "// This is in turn parsing gnu.java.lang.CharData, which is generated by\n"
+ "// scripts/unicode-muncher.pl. The Unicode data comes from\n"
+ "// www.unicode.org; this header is based on\n"
+ "// " + SOURCE + ". JDK 1.4 uses Unicode version 3.0.0.\n"
+ "// DO NOT EDIT the tables. Instead, fix the upstream scripts and run\n"
+ "// them again.\n"
+ "\n"
+ "// The data is stored in C style arrays of the appropriate CNI types, to\n"
+ "// guarantee that the data is constant and non-relocatable. The field\n"
+ "// <code>blocks</code> stores the offset of a block of 2<supSHIFT</sup>\n"
+ "// characters within <code>data</code>. The data field, in turn, stores\n"
+ "// information about each character in the low order bits, and an offset\n"
+ "// into the attribute tables <code>upper</code>, <code>lower</code>,\n"
+ "// <code>numValue</code>, and <code>direction</code>. Notice that the\n"
+ "// attribute tables are much smaller than 0xffff entries; as many characters\n"
+ "// in Unicode share common attributes. Finally, there is a listing for\n"
+ "// <code>title</code> exceptions (most characters just have the same title\n"
+ "// case as upper case).\n"
+ "\n"
+ "// This file should only be included by natCharacter.cc\n"
+ "\n"
+ "/**\n"
+ " * The character shift amount to look up the block offset. In other words,\n"
+ " * <code>(char) (blocks[ch >> SHIFT] + ch)</code> is the index where\n"
+ " * <code>ch</code> is described in <code>data</code>.\n"
+ " */\n"
+ "#define SHIFT " + SHIFT);
convertString("/**\n"
+ " * The mapping of character blocks to their location in <code>data</code>.\n"
+ " * Each entry has been adjusted so that a modulo 16 sum with the desired\n"
+ " * character gives the actual index into <code>data</code>.\n"
+ " */",
char.class, "blocks", BLOCKS);
convertString("/**\n"
+ " * Information about each character. The low order 5 bits form the\n"
+ " * character type, the next bit is a flag for non-breaking spaces, and the\n"
+ " * next bit is a flag for mirrored directionality. The high order 9 bits\n"
+ " * form the offset into the attribute tables. Note that this limits the\n"
+ " * number of unique character attributes to 512, which is not a problem\n"
+ " * as of Unicode version 3.2.0, but may soon become one.\n"
+ " */",
char.class, "data", DATA);
convertString("/**\n"
+ " * This is the attribute table for computing the numeric value of a\n"
+ " * character. The value is -1 if Unicode does not define a value, -2\n"
+ " * if the value is not a positive integer, otherwise it is the value.\n"
+ " */",
short.class, "numValue", NUM_VALUE);
convertString("/**\n"
+ " * This is the attribute table for computing the uppercase representation\n"
+ " * of a character. The value is the difference between the character and\n"
+ " * its uppercase version.\n"
+ " */",
short.class, "upper", UPPER);
convertString("/**\n"
+ " * This is the attribute table for computing the lowercase representation\n"
+ " * of a character. The value is the difference between the character and\n"
+ " * its lowercase version.\n"
+ " */",
short.class, "lower", LOWER);
convertString("/**\n"
+ " * This is the attribute table for computing the directionality class\n"
+ " * of a character. At present, the value is in the range 0 - 18 if the\n"
+ " * character has a direction, otherwise it is -1.\n"
+ " */",
byte.class, "direction", DIRECTION);
convertString("/**\n"
+ " * This is the listing of titlecase special cases (all other character\n"
+ " * can use <code>upper</code> to determine their titlecase). The listing\n"
+ " * is a sequence of character pairs; converting the first character of the\n"
+ " * pair to titlecase produces the second character.\n"
+ " */",
char.class, "title", TITLE);
System.out.println();
System.out.println("#endif /* __JAVA_CHARTABLES_H__ */");
}
private static void convertString(String header, Class type,
String name, String field)
{
System.out.println();
System.out.println(header);
System.out.println("static const j" + type.getName() + " " + name
+ "[] = {");
char[] data = field.toCharArray();
int wrap;
if (type == char.class)
wrap = 10;
else if (type == byte.class)
wrap = 21;
else if (type == short.class)
wrap = 13;
else
throw new Error("Unexpeced type");
for (int i = 0; i < data.length; i += wrap)
{
System.out.print(" ");
for (int j = 0; j < wrap; j++)
{
if (i + j >= data.length)
break;
System.out.print(" ");
if (type == char.class)
System.out.print((int) data[i + j]);
else if (type == byte.class)
System.out.print((byte) data[i + j]);
else if (type == short.class)
System.out.print((short) data[i + j]);
System.out.print(",");
}
System.out.println();
}
System.out.println(" };\n"
+ "/** Length of " + name + ". */\n"
+ "static const int " + name + "_length = "
+ data.length + ";");
}
}