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1 | /************************************************* |
2 | * Perl-Compatible Regular Expressions * | |
3 | *************************************************/ | |
4 | ||
5 | /* | |
6 | PCRE is a library of functions to support regular expressions whose syntax | |
7 | and semantics are as close as possible to those of the Perl 5 language. | |
8 | ||
9 | Written by: Philip Hazel <ph10@cam.ac.uk> | |
10 | ||
11 | Copyright (c) 1997-2004 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 support program to generate the file chartables.c, containing | |
44 | character tables of various kinds. They are built according to the default C | |
45 | locale and used as the default tables by PCRE. Now that pcre_maketables is | |
46 | a function visible to the outside world, we make use of its code from here in | |
47 | order to be consistent. */ | |
48 | ||
49 | #include <ctype.h> | |
50 | #include <stdio.h> | |
51 | #include <string.h> | |
52 | ||
53 | #include "internal.h" | |
54 | ||
55 | #define DFTABLES /* maketables.c notices this */ | |
56 | #include "maketables.c" | |
57 | ||
58 | ||
59 | int main(int argc, char **argv) | |
60 | { | |
61 | int i; | |
62 | FILE *f; | |
63 | const unsigned char *tables = pcre_maketables(); | |
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], "w"); | |
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 is #included in the compilation of pcre.c to build the default\n" | |
90 | "character tables which are used when no tables are passed to the compile\n" | |
91 | "function. */\n\n" | |
92 | "static 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 | return 0; | |
171 | } | |
172 | ||
173 | /* End of dftables.c */ |