Annotation of embedaddon/php/ext/pcre/pcrelib/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: #include "config.h"
! 47:
! 48: #include <ctype.h>
! 49: #include <stdio.h>
! 50: #include <string.h>
! 51: #include <locale.h>
! 52:
! 53: #include "pcre_internal.h"
! 54:
! 55: #define DFTABLES /* pcre_maketables.c notices this */
! 56: #include "pcre_maketables.c"
! 57:
! 58:
! 59: int main(int argc, char **argv)
! 60: {
! 61: FILE *f;
! 62: int i = 1;
! 63: const unsigned char *tables;
! 64: const unsigned char *base_of_tables;
! 65:
! 66: /* By default, the default C locale is used rather than what the building user
! 67: happens to have set. However, if the -L option is given, set the locale from
! 68: the LC_xxx environment variables. */
! 69:
! 70: if (argc > 1 && strcmp(argv[1], "-L") == 0)
! 71: {
! 72: setlocale(LC_ALL, ""); /* Set from environment variables */
! 73: i++;
! 74: }
! 75:
! 76: if (argc < i + 1)
! 77: {
! 78: fprintf(stderr, "dftables: one filename argument is required\n");
! 79: return 1;
! 80: }
! 81:
! 82: tables = pcre_maketables();
! 83: base_of_tables = tables;
! 84:
! 85: f = fopen(argv[i], "wb");
! 86: if (f == NULL)
! 87: {
! 88: fprintf(stderr, "dftables: failed to open %s for writing\n", argv[1]);
! 89: return 1;
! 90: }
! 91:
! 92: /* There are several fprintf() calls here, because gcc in pedantic mode
! 93: complains about the very long string otherwise. */
! 94:
! 95: fprintf(f,
! 96: "/*************************************************\n"
! 97: "* Perl-Compatible Regular Expressions *\n"
! 98: "*************************************************/\n\n"
! 99: "/* This file was automatically written by the dftables auxiliary\n"
! 100: "program. It contains character tables that are used when no external\n"
! 101: "tables are passed to PCRE by the application that calls it. The tables\n"
! 102: "are used only for characters whose code values are less than 256.\n\n");
! 103: fprintf(f,
! 104: "The following #includes are present because without them gcc 4.x may remove\n"
! 105: "the array definition from the final binary if PCRE is built into a static\n"
! 106: "library and dead code stripping is activated. This leads to link errors.\n"
! 107: "Pulling in the header ensures that the array gets flagged as \"someone\n"
! 108: "outside this compilation unit might reference this\" and so it will always\n"
! 109: "be supplied to the linker. */\n\n"
! 110: "#ifdef HAVE_CONFIG_H\n"
! 111: "#include \"config.h\"\n"
! 112: "#endif\n\n"
! 113: "#include \"pcre_internal.h\"\n\n");
! 114: fprintf(f,
! 115: "const unsigned char _pcre_default_tables[] = {\n\n"
! 116: "/* This table is a lower casing table. */\n\n");
! 117:
! 118: fprintf(f, " ");
! 119: for (i = 0; i < 256; i++)
! 120: {
! 121: if ((i & 7) == 0 && i != 0) fprintf(f, "\n ");
! 122: fprintf(f, "%3d", *tables++);
! 123: if (i != 255) fprintf(f, ",");
! 124: }
! 125: fprintf(f, ",\n\n");
! 126:
! 127: fprintf(f, "/* This table is a case flipping table. */\n\n");
! 128:
! 129: fprintf(f, " ");
! 130: for (i = 0; i < 256; i++)
! 131: {
! 132: if ((i & 7) == 0 && i != 0) fprintf(f, "\n ");
! 133: fprintf(f, "%3d", *tables++);
! 134: if (i != 255) fprintf(f, ",");
! 135: }
! 136: fprintf(f, ",\n\n");
! 137:
! 138: fprintf(f,
! 139: "/* This table contains bit maps for various character classes.\n"
! 140: "Each map is 32 bytes long and the bits run from the least\n"
! 141: "significant end of each byte. The classes that have their own\n"
! 142: "maps are: space, xdigit, digit, upper, lower, word, graph\n"
! 143: "print, punct, and cntrl. Other classes are built from combinations. */\n\n");
! 144:
! 145: fprintf(f, " ");
! 146: for (i = 0; i < cbit_length; i++)
! 147: {
! 148: if ((i & 7) == 0 && i != 0)
! 149: {
! 150: if ((i & 31) == 0) fprintf(f, "\n");
! 151: fprintf(f, "\n ");
! 152: }
! 153: fprintf(f, "0x%02x", *tables++);
! 154: if (i != cbit_length - 1) fprintf(f, ",");
! 155: }
! 156: fprintf(f, ",\n\n");
! 157:
! 158: fprintf(f,
! 159: "/* This table identifies various classes of character by individual bits:\n"
! 160: " 0x%02x white space character\n"
! 161: " 0x%02x letter\n"
! 162: " 0x%02x decimal digit\n"
! 163: " 0x%02x hexadecimal digit\n"
! 164: " 0x%02x alphanumeric or '_'\n"
! 165: " 0x%02x regular expression metacharacter or binary zero\n*/\n\n",
! 166: ctype_space, ctype_letter, ctype_digit, ctype_xdigit, ctype_word,
! 167: ctype_meta);
! 168:
! 169: fprintf(f, " ");
! 170: for (i = 0; i < 256; i++)
! 171: {
! 172: if ((i & 7) == 0 && i != 0)
! 173: {
! 174: fprintf(f, " /* ");
! 175: if (isprint(i-8)) fprintf(f, " %c -", i-8);
! 176: else fprintf(f, "%3d-", i-8);
! 177: if (isprint(i-1)) fprintf(f, " %c ", i-1);
! 178: else fprintf(f, "%3d", i-1);
! 179: fprintf(f, " */\n ");
! 180: }
! 181: fprintf(f, "0x%02x", *tables++);
! 182: if (i != 255) fprintf(f, ",");
! 183: }
! 184:
! 185: fprintf(f, "};/* ");
! 186: if (isprint(i-8)) fprintf(f, " %c -", i-8);
! 187: else fprintf(f, "%3d-", i-8);
! 188: if (isprint(i-1)) fprintf(f, " %c ", i-1);
! 189: else fprintf(f, "%3d", i-1);
! 190: fprintf(f, " */\n\n/* End of pcre_chartables.c */\n");
! 191:
! 192: fclose(f);
! 193: free((void *)base_of_tables);
! 194: return 0;
! 195: }
! 196:
! 197: /* End of dftables.c */
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