Annotation of embedaddon/pcre/dftables.c, revision 1.1
1.1 ! misho 1: /*************************************************
! 2: * Perl-Compatible Regular Expressions *
! 3: *************************************************/
! 4:
! 5: /* PCRE is a library of functions to support regular expressions whose syntax
! 6: and semantics are as close as possible to those of the Perl 5 language.
! 7:
! 8: Written by Philip Hazel
! 9: Copyright (c) 1997-2008 University of Cambridge
! 10:
! 11: -----------------------------------------------------------------------------
! 12: Redistribution and use in source and binary forms, with or without
! 13: modification, are permitted provided that the following conditions are met:
! 14:
! 15: * Redistributions of source code must retain the above copyright notice,
! 16: this list of conditions and the following disclaimer.
! 17:
! 18: * Redistributions in binary form must reproduce the above copyright
! 19: notice, this list of conditions and the following disclaimer in the
! 20: documentation and/or other materials provided with the distribution.
! 21:
! 22: * Neither the name of the University of Cambridge nor the names of its
! 23: contributors may be used to endorse or promote products derived from
! 24: this software without specific prior written permission.
! 25:
! 26: THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
! 27: AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 28: IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 29: ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
! 30: LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
! 31: CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
! 32: SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
! 33: INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
! 34: CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
! 35: ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
! 36: POSSIBILITY OF SUCH DAMAGE.
! 37: -----------------------------------------------------------------------------
! 38: */
! 39:
! 40:
! 41: /* This is a freestanding support program to generate a file containing
! 42: character tables for PCRE. The tables are built according to the current
! 43: locale. Now that pcre_maketables is a function visible to the outside world, we
! 44: make use of its code from here in order to be consistent. */
! 45:
! 46: #ifdef HAVE_CONFIG_H
! 47: #include "config.h"
! 48: #endif
! 49:
! 50: #include <ctype.h>
! 51: #include <stdio.h>
! 52: #include <string.h>
! 53: #include <locale.h>
! 54:
! 55: #include "pcre_internal.h"
! 56:
! 57: #define DFTABLES /* pcre_maketables.c notices this */
! 58: #include "pcre_maketables.c"
! 59:
! 60:
! 61: int main(int argc, char **argv)
! 62: {
! 63: FILE *f;
! 64: int i = 1;
! 65: const unsigned char *tables;
! 66: const unsigned char *base_of_tables;
! 67:
! 68: /* By default, the default C locale is used rather than what the building user
! 69: happens to have set. However, if the -L option is given, set the locale from
! 70: the LC_xxx environment variables. */
! 71:
! 72: if (argc > 1 && strcmp(argv[1], "-L") == 0)
! 73: {
! 74: setlocale(LC_ALL, ""); /* Set from environment variables */
! 75: i++;
! 76: }
! 77:
! 78: if (argc < i + 1)
! 79: {
! 80: fprintf(stderr, "dftables: one filename argument is required\n");
! 81: return 1;
! 82: }
! 83:
! 84: tables = pcre_maketables();
! 85: base_of_tables = tables;
! 86:
! 87: f = fopen(argv[i], "wb");
! 88: if (f == NULL)
! 89: {
! 90: fprintf(stderr, "dftables: failed to open %s for writing\n", argv[1]);
! 91: return 1;
! 92: }
! 93:
! 94: /* There are several fprintf() calls here, because gcc in pedantic mode
! 95: complains about the very long string otherwise. */
! 96:
! 97: fprintf(f,
! 98: "/*************************************************\n"
! 99: "* Perl-Compatible Regular Expressions *\n"
! 100: "*************************************************/\n\n"
! 101: "/* This file was automatically written by the dftables auxiliary\n"
! 102: "program. It contains character tables that are used when no external\n"
! 103: "tables are passed to PCRE by the application that calls it. The tables\n"
! 104: "are used only for characters whose code values are less than 256.\n\n");
! 105: fprintf(f,
! 106: "The following #includes are present because without them gcc 4.x may remove\n"
! 107: "the array definition from the final binary if PCRE is built into a static\n"
! 108: "library and dead code stripping is activated. This leads to link errors.\n"
! 109: "Pulling in the header ensures that the array gets flagged as \"someone\n"
! 110: "outside this compilation unit might reference this\" and so it will always\n"
! 111: "be supplied to the linker. */\n\n"
! 112: "#ifdef HAVE_CONFIG_H\n"
! 113: "#include \"config.h\"\n"
! 114: "#endif\n\n"
! 115: "#include \"pcre_internal.h\"\n\n");
! 116: fprintf(f,
! 117: "const unsigned char _pcre_default_tables[] = {\n\n"
! 118: "/* This table is a lower casing table. */\n\n");
! 119:
! 120: fprintf(f, " ");
! 121: for (i = 0; i < 256; i++)
! 122: {
! 123: if ((i & 7) == 0 && i != 0) fprintf(f, "\n ");
! 124: fprintf(f, "%3d", *tables++);
! 125: if (i != 255) fprintf(f, ",");
! 126: }
! 127: fprintf(f, ",\n\n");
! 128:
! 129: fprintf(f, "/* This table is a case flipping table. */\n\n");
! 130:
! 131: fprintf(f, " ");
! 132: for (i = 0; i < 256; i++)
! 133: {
! 134: if ((i & 7) == 0 && i != 0) fprintf(f, "\n ");
! 135: fprintf(f, "%3d", *tables++);
! 136: if (i != 255) fprintf(f, ",");
! 137: }
! 138: fprintf(f, ",\n\n");
! 139:
! 140: fprintf(f,
! 141: "/* This table contains bit maps for various character classes.\n"
! 142: "Each map is 32 bytes long and the bits run from the least\n"
! 143: "significant end of each byte. The classes that have their own\n"
! 144: "maps are: space, xdigit, digit, upper, lower, word, graph\n"
! 145: "print, punct, and cntrl. Other classes are built from combinations. */\n\n");
! 146:
! 147: fprintf(f, " ");
! 148: for (i = 0; i < cbit_length; i++)
! 149: {
! 150: if ((i & 7) == 0 && i != 0)
! 151: {
! 152: if ((i & 31) == 0) fprintf(f, "\n");
! 153: fprintf(f, "\n ");
! 154: }
! 155: fprintf(f, "0x%02x", *tables++);
! 156: if (i != cbit_length - 1) fprintf(f, ",");
! 157: }
! 158: fprintf(f, ",\n\n");
! 159:
! 160: fprintf(f,
! 161: "/* This table identifies various classes of character by individual bits:\n"
! 162: " 0x%02x white space character\n"
! 163: " 0x%02x letter\n"
! 164: " 0x%02x decimal digit\n"
! 165: " 0x%02x hexadecimal digit\n"
! 166: " 0x%02x alphanumeric or '_'\n"
! 167: " 0x%02x regular expression metacharacter or binary zero\n*/\n\n",
! 168: ctype_space, ctype_letter, ctype_digit, ctype_xdigit, ctype_word,
! 169: ctype_meta);
! 170:
! 171: fprintf(f, " ");
! 172: for (i = 0; i < 256; i++)
! 173: {
! 174: if ((i & 7) == 0 && i != 0)
! 175: {
! 176: fprintf(f, " /* ");
! 177: if (isprint(i-8)) fprintf(f, " %c -", i-8);
! 178: else fprintf(f, "%3d-", i-8);
! 179: if (isprint(i-1)) fprintf(f, " %c ", i-1);
! 180: else fprintf(f, "%3d", i-1);
! 181: fprintf(f, " */\n ");
! 182: }
! 183: fprintf(f, "0x%02x", *tables++);
! 184: if (i != 255) fprintf(f, ",");
! 185: }
! 186:
! 187: fprintf(f, "};/* ");
! 188: if (isprint(i-8)) fprintf(f, " %c -", i-8);
! 189: else fprintf(f, "%3d-", i-8);
! 190: if (isprint(i-1)) fprintf(f, " %c ", i-1);
! 191: else fprintf(f, "%3d", i-1);
! 192: fprintf(f, " */\n\n/* End of pcre_chartables.c */\n");
! 193:
! 194: fclose(f);
! 195: free((void *)base_of_tables);
! 196: return 0;
! 197: }
! 198:
! 199: /* End of dftables.c */
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