213 lines
6.8 KiB
C
213 lines
6.8 KiB
C
/*************************************************
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* Perl-Compatible Regular Expressions *
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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
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Copyright (c) 1997-2012 University of Cambridge
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-----------------------------------------------------------------------------
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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* Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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* Neither the name of the University of Cambridge nor the names of its
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contributors may be used to endorse or promote products derived from
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this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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-----------------------------------------------------------------------------
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*/
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/* This is a freestanding support program to generate a file containing
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character tables for PCRE. The tables are built according to the current
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locale. Now that pcre_maketables is a function visible to the outside world, we
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make use of its code from here in order to be consistent. */
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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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 <locale.h>
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#include "pcre_internal.h"
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#define DFTABLES /* pcre_maketables.c notices this */
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#include "pcre_maketables.c"
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int main(int argc, char **argv)
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{
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FILE *f;
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int i = 1;
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const unsigned char *tables;
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const unsigned char *base_of_tables;
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/* By default, the default C locale is used rather than what the building user
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happens to have set. However, if the -L option is given, set the locale from
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the LC_xxx environment variables. */
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if (argc > 1 && strcmp(argv[1], "-L") == 0)
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{
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setlocale(LC_ALL, ""); /* Set from environment variables */
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i++;
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}
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if (argc < i + 1)
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{
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fprintf(stderr, "dftables: one filename argument is required\n");
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return 1;
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}
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tables = pcre_maketables();
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base_of_tables = tables;
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f = fopen(argv[i], "wb");
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if (f == NULL)
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{
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fprintf(stderr, "dftables: failed to open %s for writing\n", argv[1]);
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return 1;
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}
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/* There are several fprintf() calls here, because gcc in pedantic mode
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complains about the very long string otherwise. */
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fprintf(f,
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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 was automatically written by the dftables auxiliary\n"
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"program. It contains character tables that are used when no external\n"
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"tables are passed to PCRE by the application that calls it. The tables\n"
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"are used only for characters whose code values are less than 256.\n\n");
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fprintf(f,
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"The following #includes are present because without them gcc 4.x may remove\n"
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"the array definition from the final binary if PCRE is built into a static\n"
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"library and dead code stripping is activated. This leads to link errors.\n"
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"Pulling in the header ensures that the array gets flagged as \"someone\n"
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"outside this compilation unit might reference this\" and so it will always\n"
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"be supplied to the linker. */\n\n");
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/* Force config.h in z/OS */
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#if defined NATIVE_ZOS
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fprintf(f,
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"/* For z/OS, config.h is forced */\n"
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"#ifndef HAVE_CONFIG_H\n"
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"#define HAVE_CONFIG_H 1\n"
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"#endif\n\n");
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#endif
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fprintf(f,
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"#ifdef HAVE_CONFIG_H\n"
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"#include \"config.h\"\n"
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"#endif\n\n"
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"#include \"pcre_internal.h\"\n\n");
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fprintf(f,
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"const pcre_uint8 PRIV(default_tables)[] = {\n\n"
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"/* This table is a lower casing table. */\n\n");
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fprintf(f, " ");
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for (i = 0; i < 256; i++)
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{
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if ((i & 7) == 0 && i != 0) fprintf(f, "\n ");
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fprintf(f, "%3d", *tables++);
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if (i != 255) fprintf(f, ",");
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}
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fprintf(f, ",\n\n");
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fprintf(f, "/* This table is a case flipping table. */\n\n");
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fprintf(f, " ");
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for (i = 0; i < 256; i++)
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{
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if ((i & 7) == 0 && i != 0) fprintf(f, "\n ");
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fprintf(f, "%3d", *tables++);
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if (i != 255) fprintf(f, ",");
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}
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fprintf(f, ",\n\n");
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fprintf(f,
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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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fprintf(f, " ");
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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) fprintf(f, "\n");
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fprintf(f, "\n ");
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}
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fprintf(f, "0x%02x", *tables++);
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if (i != cbit_length - 1) fprintf(f, ",");
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}
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fprintf(f, ",\n\n");
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fprintf(f,
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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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fprintf(f, " ");
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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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fprintf(f, " /* ");
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if (isprint(i-8)) fprintf(f, " %c -", i-8);
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else fprintf(f, "%3d-", i-8);
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if (isprint(i-1)) fprintf(f, " %c ", i-1);
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else fprintf(f, "%3d", i-1);
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fprintf(f, " */\n ");
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}
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fprintf(f, "0x%02x", *tables++);
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if (i != 255) fprintf(f, ",");
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}
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fprintf(f, "};/* ");
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if (isprint(i-8)) fprintf(f, " %c -", i-8);
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else fprintf(f, "%3d-", i-8);
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if (isprint(i-1)) fprintf(f, " %c ", i-1);
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else fprintf(f, "%3d", i-1);
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fprintf(f, " */\n\n/* End of pcre_chartables.c */\n");
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fclose(f);
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free((void *)base_of_tables);
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return 0;
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}
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/* End of dftables.c */
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