1/*************************************************
2*      Perl-Compatible Regular Expressions       *
3*************************************************/
4
5/*
6PCRE is a library of functions to support regular expressions whose syntax
7and semantics are as close as possible to those of the Perl 5 language.
8
9Written by: Philip Hazel <ph10@cam.ac.uk>
10
11           Copyright (c) 1997-2004 University of Cambridge
12
13-----------------------------------------------------------------------------
14Redistribution and use in source and binary forms, with or without
15modification, 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
28THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
29AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
30IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
31ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
32LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
33CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
34SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
35INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
36CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
37ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
38POSSIBILITY OF SUCH DAMAGE.
39-----------------------------------------------------------------------------
40*/
41
42
43/* This is a support program to generate the file chartables.c, containing
44character tables of various kinds. They are built according to the default C
45locale and used as the default tables by PCRE. Now that pcre_maketables is
46a function visible to the outside world, we make use of its code from here in
47order 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
59int main(int argc, char **argv)
60{
61int i;
62FILE *f;
63const unsigned char *tables = pcre_maketables();
64
65if (argc != 2)
66  {
67  fprintf(stderr, "dftables: one filename argument is required\n");
68  return 1;
69  }
70
71f = fopen(argv[1], "w");
72if (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
79about the very long string otherwise. */
80
81fprintf(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");
88fprintf(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
95fprintf(f, "  ");
96for (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  }
102fprintf(f, ",\n\n");
103
104fprintf(f, "/* This table is a case flipping table. */\n\n");
105
106fprintf(f, "  ");
107for (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  }
113fprintf(f, ",\n\n");
114
115fprintf(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
122fprintf(f, "  ");
123for (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  }
133fprintf(f, ",\n\n");
134
135fprintf(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
146fprintf(f, "  ");
147for (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
162fprintf(f, "};/* ");
163if (isprint(i-8)) fprintf(f, " %c -", i-8);
164  else fprintf(f, "%3d-", i-8);
165if (isprint(i-1)) fprintf(f, " %c ", i-1);
166  else fprintf(f, "%3d", i-1);
167fprintf(f, " */\n\n/* End of chartables.c */\n");
168
169fclose(f);
170return 0;
171}
172
173/* End of dftables.c */
174