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213 lines
11 KiB
Java
213 lines
11 KiB
Java
/* MakeCharTables.java - converts gnu.java.lang.CharData into
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include/java-chartables.h
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Copyright (C) 2002 Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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import gnu.java.lang.CharData;
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public class MakeCharTables implements CharData
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{
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public static void main(String[] args)
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{
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System.out.println("/* java-chartables.h -- Character tables for java.lang.Character -*- c++ -*-\n"
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+ " Copyright (C) 2002 Free Software Foundation, Inc.\n"
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+ " *** This file is generated by scripts/MakeCharTables.java ***\n"
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+ "\n"
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+ "This file is part of GNU Classpath.\n"
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+ "\n"
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+ "GNU Classpath is free software; you can redistribute it and/or modify\n"
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+ "it under the terms of the GNU General Public License as published by\n"
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+ "the Free Software Foundation; either version 2, or (at your option)\n"
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+ "any later version.\n"
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+ "\n"
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+ "GNU Classpath is distributed in the hope that it will be useful, but\n"
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+ "WITHOUT ANY WARRANTY; without even the implied warranty of\n"
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+ "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU\n"
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+ "General Public License for more details.\n"
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+ "\n"
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+ "You should have received a copy of the GNU General Public License\n"
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+ "along with GNU Classpath; see the file COPYING. If not, write to the\n"
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+ "Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA\n"
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+ "02110-1301 USA.\n"
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+ "\n"
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+ "Linking this library statically or dynamically with other modules is\n"
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+ "making a combined work based on this library. Thus, the terms and\n"
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+ "conditions of the GNU General Public License cover the whole\n"
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+ "combination.\n"
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+ "\n"
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+ "As a special exception, the copyright holders of this library give you\n"
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+ "permission to link this library with independent modules to produce an\n"
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+ "executable, regardless of the license terms of these independent\n"
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+ "modules, and to copy and distribute the resulting executable under\n"
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+ "terms of your choice, provided that you also meet, for each linked\n"
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+ "independent module, the terms and conditions of the license of that\n"
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+ "module. An independent module is a module which is not derived from\n"
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+ "or based on this library. If you modify this library, you may extend\n"
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+ "this exception to your version of the library, but you are not\n"
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+ "obligated to do so. If you do not wish to do so, delete this\n"
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+ "exception statement from your version. */\n"
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+ "\n"
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+ "#ifndef __JAVA_CHARTABLES_H__\n"
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+ "#define __JAVA_CHARTABLES_H__\n"
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+ "\n"
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+ "// These tables are automatically generated by scripts/MakeCharTables.java.\n"
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+ "// This is in turn parsing gnu.java.lang.CharData, which is generated by\n"
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+ "// scripts/unicode-muncher.pl. The Unicode data comes from\n"
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+ "// www.unicode.org; this header is based on\n"
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+ "// " + SOURCE + ". JDK 1.4 uses Unicode version 3.0.0.\n"
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+ "// DO NOT EDIT the tables. Instead, fix the upstream scripts and run\n"
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+ "// them again.\n"
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+ "\n"
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+ "// The data is stored in C style arrays of the appropriate CNI types, to\n"
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+ "// guarantee that the data is constant and non-relocatable. The field\n"
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+ "// <code>blocks</code> stores the offset of a block of 2<supSHIFT</sup>\n"
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+ "// characters within <code>data</code>. The data field, in turn, stores\n"
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+ "// information about each character in the low order bits, and an offset\n"
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+ "// into the attribute tables <code>upper</code>, <code>lower</code>,\n"
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+ "// <code>numValue</code>, and <code>direction</code>. Notice that the\n"
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+ "// attribute tables are much smaller than 0xffff entries; as many characters\n"
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+ "// in Unicode share common attributes. Finally, there is a listing for\n"
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+ "// <code>title</code> exceptions (most characters just have the same title\n"
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+ "// case as upper case).\n"
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+ "\n"
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+ "// This file should only be included by natCharacter.cc\n"
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+ "\n"
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+ "/**\n"
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+ " * The character shift amount to look up the block offset. In other words,\n"
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+ " * <code>(char) (blocks[ch >> SHIFT] + ch)</code> is the index where\n"
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+ " * <code>ch</code> is described in <code>data</code>.\n"
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+ " */\n"
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+ "#define SHIFT " + SHIFT);
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convertString("/**\n"
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+ " * The mapping of character blocks to their location in <code>data</code>.\n"
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+ " * Each entry has been adjusted so that a modulo 16 sum with the desired\n"
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+ " * character gives the actual index into <code>data</code>.\n"
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+ " */",
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char.class, "blocks", BLOCKS);
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convertString("/**\n"
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+ " * Information about each character. The low order 5 bits form the\n"
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+ " * character type, the next bit is a flag for non-breaking spaces, and the\n"
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+ " * next bit is a flag for mirrored directionality. The high order 9 bits\n"
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+ " * form the offset into the attribute tables. Note that this limits the\n"
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+ " * number of unique character attributes to 512, which is not a problem\n"
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+ " * as of Unicode version 3.2.0, but may soon become one.\n"
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+ " */",
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char.class, "data", DATA);
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convertString("/**\n"
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+ " * This is the attribute table for computing the numeric value of a\n"
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+ " * character. The value is -1 if Unicode does not define a value, -2\n"
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+ " * if the value is not a positive integer, otherwise it is the value.\n"
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+ " */",
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short.class, "numValue", NUM_VALUE);
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convertString("/**\n"
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+ " * This is the attribute table for computing the uppercase representation\n"
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+ " * of a character. The value is the difference between the character and\n"
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+ " * its uppercase version.\n"
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+ " */",
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short.class, "upper", UPPER);
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convertString("/**\n"
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+ " * This is the attribute table for computing the lowercase representation\n"
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+ " * of a character. The value is the difference between the character and\n"
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+ " * its lowercase version.\n"
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+ " */",
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short.class, "lower", LOWER);
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convertString("/**\n"
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+ " * This is the attribute table for computing the directionality class\n"
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+ " * of a character. At present, the value is in the range 0 - 18 if the\n"
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+ " * character has a direction, otherwise it is -1.\n"
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+ " */",
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byte.class, "direction", DIRECTION);
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convertString("/**\n"
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+ " * This is the listing of titlecase special cases (all other character\n"
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+ " * can use <code>upper</code> to determine their titlecase). The listing\n"
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+ " * is a sequence of character pairs; converting the first character of the\n"
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+ " * pair to titlecase produces the second character.\n"
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+ " */",
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char.class, "title", TITLE);
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System.out.println();
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System.out.println("#endif /* __JAVA_CHARTABLES_H__ */");
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}
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private static void convertString(String header, Class type,
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String name, String field)
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{
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System.out.println();
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System.out.println(header);
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System.out.println("static const j" + type.getName() + " " + name
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+ "[] = {");
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char[] data = field.toCharArray();
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int wrap;
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if (type == char.class)
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wrap = 10;
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else if (type == byte.class)
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wrap = 21;
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else if (type == short.class)
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wrap = 13;
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else
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throw new Error("Unexpeced type");
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for (int i = 0; i < data.length; i += wrap)
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{
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System.out.print(" ");
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for (int j = 0; j < wrap; j++)
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{
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if (i + j >= data.length)
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break;
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System.out.print(" ");
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if (type == char.class)
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System.out.print((int) data[i + j]);
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else if (type == byte.class)
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System.out.print((byte) data[i + j]);
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else if (type == short.class)
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System.out.print((short) data[i + j]);
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System.out.print(",");
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}
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System.out.println();
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}
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System.out.println(" };\n"
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+ "/** Length of " + name + ". */\n"
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+ "static const int " + name + "_length = "
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+ data.length + ";");
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}
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}
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