149 lines
4.5 KiB
C
149 lines
4.5 KiB
C
/*************************************************
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* Perl-Compatible Regular Expressions *
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*************************************************/
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/*
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PCRE is a library of functions to support regular expressions whose syntax
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and semantics are as close as possible to those of the Perl 5 language.
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Written by: Philip Hazel <ph10@cam.ac.uk>
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Copyright (c) 1997-2000 University of Cambridge
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-----------------------------------------------------------------------------
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Permission is granted to anyone to use this software for any purpose on any
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computer system, and to redistribute it freely, subject to the following
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restrictions:
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1. This software is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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2. The origin of this software must not be misrepresented, either by
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explicit claim or by omission.
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3. Altered versions must be plainly marked as such, and must not be
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misrepresented as being the original software.
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4. If PCRE is embedded in any software that is released under the GNU
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General Purpose Licence (GPL), then the terms of that licence shall
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supersede any condition above with which it is incompatible.
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-----------------------------------------------------------------------------
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See the file Tech.Notes for some information on the internals.
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*/
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/* This is a support program to generate the file chartables.c, containing
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character tables of various kinds. They are built according to the default C
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locale and used as the default tables by PCRE. Now that pcre_maketables is
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a function visible to the outside world, we make use of its code from here in
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order to be consistent. */
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#include <ctype.h>
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#include <stdio.h>
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#include <string.h>
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#include "internal.h"
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#define DFTABLES /* maketables.c notices this */
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#include "maketables.c"
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int main(void)
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{
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int i;
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unsigned const char *tables = pcre_maketables();
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printf(
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"/*************************************************\n"
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"* Perl-Compatible Regular Expressions *\n"
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"*************************************************/\n\n"
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"/* This file is automatically written by the dftables auxiliary \n"
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"program. If you edit it by hand, you might like to edit the Makefile to \n"
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"prevent its ever being regenerated.\n\n"
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"This file is #included in the compilation of pcre.c to build the default\n"
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"character tables which are used when no tables are passed to the compile\n"
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"function. */\n\n"
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"static unsigned char pcre_default_tables[] = {\n\n"
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"/* This table is a lower casing table. */\n\n");
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printf(" ");
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for (i = 0; i < 256; i++)
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{
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if ((i & 7) == 0 && i != 0) printf("\n ");
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printf("%3d", *tables++);
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if (i != 255) printf(",");
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}
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printf(",\n\n");
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printf("/* This table is a case flipping table. */\n\n");
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printf(" ");
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for (i = 0; i < 256; i++)
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{
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if ((i & 7) == 0 && i != 0) printf("\n ");
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printf("%3d", *tables++);
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if (i != 255) printf(",");
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}
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printf(",\n\n");
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printf(
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"/* This table contains bit maps for various character classes.\n"
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"Each map is 32 bytes long and the bits run from the least\n"
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"significant end of each byte. The classes that have their own\n"
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"maps are: space, xdigit, digit, upper, lower, word, graph\n"
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"print, punct, and cntrl. Other classes are built from combinations. */\n\n");
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printf(" ");
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for (i = 0; i < cbit_length; i++)
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{
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if ((i & 7) == 0 && i != 0)
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{
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if ((i & 31) == 0) printf("\n");
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printf("\n ");
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}
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printf("0x%02x", *tables++);
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if (i != cbit_length - 1) printf(",");
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}
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printf(",\n\n");
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printf(
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"/* This table identifies various classes of character by individual bits:\n"
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" 0x%02x white space character\n"
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" 0x%02x letter\n"
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" 0x%02x decimal digit\n"
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" 0x%02x hexadecimal digit\n"
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" 0x%02x alphanumeric or '_'\n"
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" 0x%02x regular expression metacharacter or binary zero\n*/\n\n",
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ctype_space, ctype_letter, ctype_digit, ctype_xdigit, ctype_word,
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ctype_meta);
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printf(" ");
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for (i = 0; i < 256; i++)
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{
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if ((i & 7) == 0 && i != 0)
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{
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printf(" /* ");
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if (isprint(i-8)) printf(" %c -", i-8);
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else printf("%3d-", i-8);
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if (isprint(i-1)) printf(" %c ", i-1);
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else printf("%3d", i-1);
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printf(" */\n ");
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}
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printf("0x%02x", *tables++);
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if (i != 255) printf(",");
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}
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printf("};/* ");
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if (isprint(i-8)) printf(" %c -", i-8);
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else printf("%3d-", i-8);
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if (isprint(i-1)) printf(" %c ", i-1);
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else printf("%3d", i-1);
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printf(" */\n\n/* End of chartables.c */\n");
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return 0;
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}
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/* End of dftables.c */
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