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Diffstat (limited to 'dftables.c')
| -rw-r--r-- | dftables.c | 212 |
1 files changed, 212 insertions, 0 deletions
diff --git a/dftables.c b/dftables.c new file mode 100644 index 0000000..1fdc8e0 --- /dev/null +++ b/dftables.c @@ -0,0 +1,212 @@ +/************************************************* +* Perl-Compatible Regular Expressions * +*************************************************/ + +/* PCRE is a library of functions to support regular expressions whose syntax +and semantics are as close as possible to those of the Perl 5 language. + + Written by Philip Hazel + Copyright (c) 1997-2012 University of Cambridge + +----------------------------------------------------------------------------- +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions are met: + + * Redistributions of source code must retain the above copyright notice, + this list of conditions and the following disclaimer. + + * Redistributions in binary form must reproduce the above copyright + notice, this list of conditions and the following disclaimer in the + documentation and/or other materials provided with the distribution. + + * Neither the name of the University of Cambridge nor the names of its + contributors may be used to endorse or promote products derived from + this software without specific prior written permission. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" +AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE +LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR +CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF +SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS +INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN +CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) +ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE +POSSIBILITY OF SUCH DAMAGE. +----------------------------------------------------------------------------- +*/ + + +/* This is a freestanding support program to generate a file containing +character tables for PCRE. The tables are built according to the current +locale. Now that pcre_maketables is a function visible to the outside world, we +make use of its code from here in order to be consistent. */ + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include <ctype.h> +#include <stdio.h> +#include <string.h> +#include <locale.h> + +#include "pcre_internal.h" + +#define DFTABLES /* pcre_maketables.c notices this */ +#include "pcre_maketables.c" + + +int main(int argc, char **argv) +{ +FILE *f; +int i = 1; +const unsigned char *tables; +const unsigned char *base_of_tables; + +/* By default, the default C locale is used rather than what the building user +happens to have set. However, if the -L option is given, set the locale from +the LC_xxx environment variables. */ + +if (argc > 1 && strcmp(argv[1], "-L") == 0) + { + setlocale(LC_ALL, ""); /* Set from environment variables */ + i++; + } + +if (argc < i + 1) + { + fprintf(stderr, "dftables: one filename argument is required\n"); + return 1; + } + +tables = pcre_maketables(); +base_of_tables = tables; + +f = fopen(argv[i], "wb"); +if (f == NULL) + { + fprintf(stderr, "dftables: failed to open %s for writing\n", argv[1]); + return 1; + } + +/* There are several fprintf() calls here, because gcc in pedantic mode +complains about the very long string otherwise. */ + +fprintf(f, + "/*************************************************\n" + "* Perl-Compatible Regular Expressions *\n" + "*************************************************/\n\n" + "/* This file was automatically written by the dftables auxiliary\n" + "program. It contains character tables that are used when no external\n" + "tables are passed to PCRE by the application that calls it. The tables\n" + "are used only for characters whose code values are less than 256.\n\n"); +fprintf(f, + "The following #includes are present because without them gcc 4.x may remove\n" + "the array definition from the final binary if PCRE is built into a static\n" + "library and dead code stripping is activated. This leads to link errors.\n" + "Pulling in the header ensures that the array gets flagged as \"someone\n" + "outside this compilation unit might reference this\" and so it will always\n" + "be supplied to the linker. */\n\n"); + +/* Force config.h in z/OS */ + +#if defined NATIVE_ZOS +fprintf(f, + "/* For z/OS, config.h is forced */\n" + "#ifndef HAVE_CONFIG_H\n" + "#define HAVE_CONFIG_H 1\n" + "#endif\n\n"); +#endif + +fprintf(f, + "#ifdef HAVE_CONFIG_H\n" + "#include \"config.h\"\n" + "#endif\n\n" + "#include \"pcre_internal.h\"\n\n"); + +fprintf(f, + "const pcre_uint8 PRIV(default_tables)[] = {\n\n" + "/* This table is a lower casing table. */\n\n"); + +fprintf(f, " "); +for (i = 0; i < 256; i++) + { + if ((i & 7) == 0 && i != 0) fprintf(f, "\n "); + fprintf(f, "%3d", *tables++); + if (i != 255) fprintf(f, ","); + } +fprintf(f, ",\n\n"); + +fprintf(f, "/* This table is a case flipping table. */\n\n"); + +fprintf(f, " "); +for (i = 0; i < 256; i++) + { + if ((i & 7) == 0 && i != 0) fprintf(f, "\n "); + fprintf(f, "%3d", *tables++); + if (i != 255) fprintf(f, ","); + } +fprintf(f, ",\n\n"); + +fprintf(f, + "/* This table contains bit maps for various character classes.\n" + "Each map is 32 bytes long and the bits run from the least\n" + "significant end of each byte. The classes that have their own\n" + "maps are: space, xdigit, digit, upper, lower, word, graph\n" + "print, punct, and cntrl. Other classes are built from combinations. */\n\n"); + +fprintf(f, " "); +for (i = 0; i < cbit_length; i++) + { + if ((i & 7) == 0 && i != 0) + { + if ((i & 31) == 0) fprintf(f, "\n"); + fprintf(f, "\n "); + } + fprintf(f, "0x%02x", *tables++); + if (i != cbit_length - 1) fprintf(f, ","); + } +fprintf(f, ",\n\n"); + +fprintf(f, + "/* This table identifies various classes of character by individual bits:\n" + " 0x%02x white space character\n" + " 0x%02x letter\n" + " 0x%02x decimal digit\n" + " 0x%02x hexadecimal digit\n" + " 0x%02x alphanumeric or '_'\n" + " 0x%02x regular expression metacharacter or binary zero\n*/\n\n", + ctype_space, ctype_letter, ctype_digit, ctype_xdigit, ctype_word, + ctype_meta); + +fprintf(f, " "); +for (i = 0; i < 256; i++) + { + if ((i & 7) == 0 && i != 0) + { + fprintf(f, " /* "); + if (isprint(i-8)) fprintf(f, " %c -", i-8); + else fprintf(f, "%3d-", i-8); + if (isprint(i-1)) fprintf(f, " %c ", i-1); + else fprintf(f, "%3d", i-1); + fprintf(f, " */\n "); + } + fprintf(f, "0x%02x", *tables++); + if (i != 255) fprintf(f, ","); + } + +fprintf(f, "};/* "); +if (isprint(i-8)) fprintf(f, " %c -", i-8); + else fprintf(f, "%3d-", i-8); +if (isprint(i-1)) fprintf(f, " %c ", i-1); + else fprintf(f, "%3d", i-1); +fprintf(f, " */\n\n/* End of pcre_chartables.c */\n"); + +fclose(f); +free((void *)base_of_tables); +return 0; +} + +/* End of dftables.c */ |