| 1 | /* $Cambridge: exim/src/src/pcre/dftables.c,v 1.3 2005/08/08 10:22:14 ph10 Exp $ */ |
| 2 | |
| 3 | /************************************************* |
| 4 | * Perl-Compatible Regular Expressions * |
| 5 | *************************************************/ |
| 6 | |
| 7 | /* PCRE is a library of functions to support regular expressions whose syntax |
| 8 | and semantics are as close as possible to those of the Perl 5 language. |
| 9 | |
| 10 | Written by Philip Hazel |
| 11 | Copyright (c) 1997-2005 University of Cambridge |
| 12 | |
| 13 | ----------------------------------------------------------------------------- |
| 14 | Redistribution and use in source and binary forms, with or without |
| 15 | modification, are permitted provided that the following conditions are met: |
| 16 | |
| 17 | * Redistributions of source code must retain the above copyright notice, |
| 18 | this list of conditions and the following disclaimer. |
| 19 | |
| 20 | * Redistributions in binary form must reproduce the above copyright |
| 21 | notice, this list of conditions and the following disclaimer in the |
| 22 | documentation and/or other materials provided with the distribution. |
| 23 | |
| 24 | * Neither the name of the University of Cambridge nor the names of its |
| 25 | contributors may be used to endorse or promote products derived from |
| 26 | this software without specific prior written permission. |
| 27 | |
| 28 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| 29 | AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 30 | IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 31 | ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
| 32 | LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 33 | CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 34 | SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 35 | INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 36 | CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 37 | ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 38 | POSSIBILITY OF SUCH DAMAGE. |
| 39 | ----------------------------------------------------------------------------- |
| 40 | */ |
| 41 | |
| 42 | |
| 43 | /* This is a freestanding support program to generate a file containing default |
| 44 | character tables for PCRE. The tables are built according to the default C |
| 45 | locale. Now that pcre_maketables is a function visible to the outside world, we |
| 46 | make use of its code from here in order to be consistent. */ |
| 47 | |
| 48 | #include <ctype.h> |
| 49 | #include <stdio.h> |
| 50 | #include <string.h> |
| 51 | |
| 52 | #include "pcre_internal.h" |
| 53 | |
| 54 | #define DFTABLES /* pcre_maketables.c notices this */ |
| 55 | #include "pcre_maketables.c" |
| 56 | |
| 57 | |
| 58 | int main(int argc, char **argv) |
| 59 | { |
| 60 | int i; |
| 61 | FILE *f; |
| 62 | const unsigned char *tables = pcre_maketables(); |
| 63 | const unsigned char *base_of_tables = tables; |
| 64 | |
| 65 | if (argc != 2) |
| 66 | { |
| 67 | fprintf(stderr, "dftables: one filename argument is required\n"); |
| 68 | return 1; |
| 69 | } |
| 70 | |
| 71 | f = fopen(argv[1], "wb"); |
| 72 | if (f == NULL) |
| 73 | { |
| 74 | fprintf(stderr, "dftables: failed to open %s for writing\n", argv[1]); |
| 75 | return 1; |
| 76 | } |
| 77 | |
| 78 | /* There are two fprintf() calls here, because gcc in pedantic mode complains |
| 79 | about the very long string otherwise. */ |
| 80 | |
| 81 | fprintf(f, |
| 82 | "/*************************************************\n" |
| 83 | "* Perl-Compatible Regular Expressions *\n" |
| 84 | "*************************************************/\n\n" |
| 85 | "/* This file is automatically written by the dftables auxiliary \n" |
| 86 | "program. If you edit it by hand, you might like to edit the Makefile to \n" |
| 87 | "prevent its ever being regenerated.\n\n"); |
| 88 | fprintf(f, |
| 89 | "This file contains the default tables for characters with codes less than\n" |
| 90 | "128 (ASCII characters). These tables are used when no external tables are\n" |
| 91 | "passed to PCRE. */\n\n" |
| 92 | "const unsigned char _pcre_default_tables[] = {\n\n" |
| 93 | "/* This table is a lower casing table. */\n\n"); |
| 94 | |
| 95 | fprintf(f, " "); |
| 96 | for (i = 0; i < 256; i++) |
| 97 | { |
| 98 | if ((i & 7) == 0 && i != 0) fprintf(f, "\n "); |
| 99 | fprintf(f, "%3d", *tables++); |
| 100 | if (i != 255) fprintf(f, ","); |
| 101 | } |
| 102 | fprintf(f, ",\n\n"); |
| 103 | |
| 104 | fprintf(f, "/* This table is a case flipping table. */\n\n"); |
| 105 | |
| 106 | fprintf(f, " "); |
| 107 | for (i = 0; i < 256; i++) |
| 108 | { |
| 109 | if ((i & 7) == 0 && i != 0) fprintf(f, "\n "); |
| 110 | fprintf(f, "%3d", *tables++); |
| 111 | if (i != 255) fprintf(f, ","); |
| 112 | } |
| 113 | fprintf(f, ",\n\n"); |
| 114 | |
| 115 | fprintf(f, |
| 116 | "/* This table contains bit maps for various character classes.\n" |
| 117 | "Each map is 32 bytes long and the bits run from the least\n" |
| 118 | "significant end of each byte. The classes that have their own\n" |
| 119 | "maps are: space, xdigit, digit, upper, lower, word, graph\n" |
| 120 | "print, punct, and cntrl. Other classes are built from combinations. */\n\n"); |
| 121 | |
| 122 | fprintf(f, " "); |
| 123 | for (i = 0; i < cbit_length; i++) |
| 124 | { |
| 125 | if ((i & 7) == 0 && i != 0) |
| 126 | { |
| 127 | if ((i & 31) == 0) fprintf(f, "\n"); |
| 128 | fprintf(f, "\n "); |
| 129 | } |
| 130 | fprintf(f, "0x%02x", *tables++); |
| 131 | if (i != cbit_length - 1) fprintf(f, ","); |
| 132 | } |
| 133 | fprintf(f, ",\n\n"); |
| 134 | |
| 135 | fprintf(f, |
| 136 | "/* This table identifies various classes of character by individual bits:\n" |
| 137 | " 0x%02x white space character\n" |
| 138 | " 0x%02x letter\n" |
| 139 | " 0x%02x decimal digit\n" |
| 140 | " 0x%02x hexadecimal digit\n" |
| 141 | " 0x%02x alphanumeric or '_'\n" |
| 142 | " 0x%02x regular expression metacharacter or binary zero\n*/\n\n", |
| 143 | ctype_space, ctype_letter, ctype_digit, ctype_xdigit, ctype_word, |
| 144 | ctype_meta); |
| 145 | |
| 146 | fprintf(f, " "); |
| 147 | for (i = 0; i < 256; i++) |
| 148 | { |
| 149 | if ((i & 7) == 0 && i != 0) |
| 150 | { |
| 151 | fprintf(f, " /* "); |
| 152 | if (isprint(i-8)) fprintf(f, " %c -", i-8); |
| 153 | else fprintf(f, "%3d-", i-8); |
| 154 | if (isprint(i-1)) fprintf(f, " %c ", i-1); |
| 155 | else fprintf(f, "%3d", i-1); |
| 156 | fprintf(f, " */\n "); |
| 157 | } |
| 158 | fprintf(f, "0x%02x", *tables++); |
| 159 | if (i != 255) fprintf(f, ","); |
| 160 | } |
| 161 | |
| 162 | fprintf(f, "};/* "); |
| 163 | if (isprint(i-8)) fprintf(f, " %c -", i-8); |
| 164 | else fprintf(f, "%3d-", i-8); |
| 165 | if (isprint(i-1)) fprintf(f, " %c ", i-1); |
| 166 | else fprintf(f, "%3d", i-1); |
| 167 | fprintf(f, " */\n\n/* End of chartables.c */\n"); |
| 168 | |
| 169 | fclose(f); |
| 170 | free((void *)base_of_tables); |
| 171 | return 0; |
| 172 | } |
| 173 | |
| 174 | /* End of dftables.c */ |