source: project/chicken/pcre/dftables.c @ 2926

Last change on this file since 2926 was 2926, checked in by felix winkelmann, 14 years ago

new chicken version (pcre merged), aalib

File size: 5.7 KB
Line 
1/*************************************************
2*      Perl-Compatible Regular Expressions       *
3*************************************************/
4
5/* PCRE is a library of functions to support regular expressions whose syntax
6and semantics are as close as possible to those of the Perl 5 language.
7
8                       Written by Philip Hazel
9           Copyright (c) 1997-2005 University of Cambridge
10
11-----------------------------------------------------------------------------
12Redistribution and use in source and binary forms, with or without
13modification, 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
26THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
27AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
28IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
29ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
30LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
31CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
32SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
33INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
34CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
35ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
36POSSIBILITY OF SUCH DAMAGE.
37-----------------------------------------------------------------------------
38*/
39
40
41/* This is a freestanding support program to generate a file containing default
42character tables for PCRE. The tables are built according to the default C
43locale. Now that pcre_maketables is a function visible to the outside world, we
44make use of its code from here in order to be consistent. */
45
46#include <ctype.h>
47#include <stdio.h>
48#include <string.h>
49
50#include "pcre_internal.h"
51
52#define DFTABLES          /* pcre_maketables.c notices this */
53#include "pcre_maketables.c"
54
55
56int main(int argc, char **argv)
57{
58int i;
59FILE *f;
60const unsigned char *tables = pcre_maketables();
61const unsigned char *base_of_tables = tables;
62
63if (argc != 2)
64  {
65  fprintf(stderr, "dftables: one filename argument is required\n");
66  return 1;
67  }
68
69f = fopen(argv[1], "wb");
70if (f == NULL)
71  {
72  fprintf(stderr, "dftables: failed to open %s for writing\n", argv[1]);
73  return 1;
74  }
75
76/* There are two fprintf() calls here, because gcc in pedantic mode complains
77about the very long string otherwise. */
78
79fprintf(f,
80  "/*************************************************\n"
81  "*      Perl-Compatible Regular Expressions       *\n"
82  "*************************************************/\n\n"
83  "/* This file is automatically written by the dftables auxiliary \n"
84  "program. If you edit it by hand, you might like to edit the Makefile to \n"
85  "prevent its ever being regenerated.\n\n");
86fprintf(f,
87  "This file contains the default tables for characters with codes less than\n"
88  "128 (ASCII characters). These tables are used when no external tables are\n"
89  "passed to PCRE. */\n\n"
90  "const unsigned char _pcre_default_tables[] = {\n\n"
91  "/* This table is a lower casing table. */\n\n");
92
93fprintf(f, "  ");
94for (i = 0; i < 256; i++)
95  {
96  if ((i & 7) == 0 && i != 0) fprintf(f, "\n  ");
97  fprintf(f, "%3d", *tables++);
98  if (i != 255) fprintf(f, ",");
99  }
100fprintf(f, ",\n\n");
101
102fprintf(f, "/* This table is a case flipping table. */\n\n");
103
104fprintf(f, "  ");
105for (i = 0; i < 256; i++)
106  {
107  if ((i & 7) == 0 && i != 0) fprintf(f, "\n  ");
108  fprintf(f, "%3d", *tables++);
109  if (i != 255) fprintf(f, ",");
110  }
111fprintf(f, ",\n\n");
112
113fprintf(f,
114  "/* This table contains bit maps for various character classes.\n"
115  "Each map is 32 bytes long and the bits run from the least\n"
116  "significant end of each byte. The classes that have their own\n"
117  "maps are: space, xdigit, digit, upper, lower, word, graph\n"
118  "print, punct, and cntrl. Other classes are built from combinations. */\n\n");
119
120fprintf(f, "  ");
121for (i = 0; i < cbit_length; i++)
122  {
123  if ((i & 7) == 0 && i != 0)
124    {
125    if ((i & 31) == 0) fprintf(f, "\n");
126    fprintf(f, "\n  ");
127    }
128  fprintf(f, "0x%02x", *tables++);
129  if (i != cbit_length - 1) fprintf(f, ",");
130  }
131fprintf(f, ",\n\n");
132
133fprintf(f,
134  "/* This table identifies various classes of character by individual bits:\n"
135  "  0x%02x   white space character\n"
136  "  0x%02x   letter\n"
137  "  0x%02x   decimal digit\n"
138  "  0x%02x   hexadecimal digit\n"
139  "  0x%02x   alphanumeric or '_'\n"
140  "  0x%02x   regular expression metacharacter or binary zero\n*/\n\n",
141  ctype_space, ctype_letter, ctype_digit, ctype_xdigit, ctype_word,
142  ctype_meta);
143
144fprintf(f, "  ");
145for (i = 0; i < 256; i++)
146  {
147  if ((i & 7) == 0 && i != 0)
148    {
149    fprintf(f, " /* ");
150    if (isprint(i-8)) fprintf(f, " %c -", i-8);
151      else fprintf(f, "%3d-", i-8);
152    if (isprint(i-1)) fprintf(f, " %c ", i-1);
153      else fprintf(f, "%3d", i-1);
154    fprintf(f, " */\n  ");
155    }
156  fprintf(f, "0x%02x", *tables++);
157  if (i != 255) fprintf(f, ",");
158  }
159
160fprintf(f, "};/* ");
161if (isprint(i-8)) fprintf(f, " %c -", i-8);
162  else fprintf(f, "%3d-", i-8);
163if (isprint(i-1)) fprintf(f, " %c ", i-1);
164  else fprintf(f, "%3d", i-1);
165fprintf(f, " */\n\n/* End of chartables.c */\n");
166
167fclose(f);
168free((void *)base_of_tables);
169return 0;
170}
171
172/* End of dftables.c */
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