pcre  8.44
About: The PCRE library implements Perl compatible regular expression pattern matching.
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dftables.c
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1 
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) 1997-2012 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 #ifdef HAVE_CONFIG_H
47 #include "config.h"
48 #endif
49 
50 #include <ctype.h>
51 #include <stdio.h>
52 #include <string.h>
53 #include <locale.h>
54 
55 #include "pcre_internal.h"
56 
57 #define DFTABLES /* pcre_maketables.c notices this */
58 #include "pcre_maketables.c"
59 
60 
61 int main(int argc, char **argv)
62 {
63 FILE *f;
64 int i = 1;
65 const unsigned char *tables;
66 const unsigned char *base_of_tables;
67 
68 /* By default, the default C locale is used rather than what the building user
69 happens to have set. However, if the -L option is given, set the locale from
70 the LC_xxx environment variables. */
71 
72 if (argc > 1 && strcmp(argv[1], "-L") == 0)
73  {
74  setlocale(LC_ALL, ""); /* Set from environment variables */
75  i++;
76  }
77 
78 if (argc < i + 1)
79  {
80  fprintf(stderr, "dftables: one filename argument is required\n");
81  return 1;
82  }
83 
85 base_of_tables = tables;
86 
87 f = fopen(argv[i], "wb");
88 if (f == NULL)
89  {
90  fprintf(stderr, "dftables: failed to open %s for writing\n", argv[1]);
91  return 1;
92  }
93 
94 /* There are several fprintf() calls here, because gcc in pedantic mode
95 complains about the very long string otherwise. */
96 
97 fprintf(f,
98  "/*************************************************\n"
99  "* Perl-Compatible Regular Expressions *\n"
100  "*************************************************/\n\n"
101  "/* This file was automatically written by the dftables auxiliary\n"
102  "program. It contains character tables that are used when no external\n"
103  "tables are passed to PCRE by the application that calls it. The tables\n"
104  "are used only for characters whose code values are less than 256.\n\n");
105 fprintf(f,
106  "The following #includes are present because without them gcc 4.x may remove\n"
107  "the array definition from the final binary if PCRE is built into a static\n"
108  "library and dead code stripping is activated. This leads to link errors.\n"
109  "Pulling in the header ensures that the array gets flagged as \"someone\n"
110  "outside this compilation unit might reference this\" and so it will always\n"
111  "be supplied to the linker. */\n\n");
112 
113 /* Force config.h in z/OS */
114 
115 #if defined NATIVE_ZOS
116 fprintf(f,
117  "/* For z/OS, config.h is forced */\n"
118  "#ifndef HAVE_CONFIG_H\n"
119  "#define HAVE_CONFIG_H 1\n"
120  "#endif\n\n");
121 #endif
122 
123 fprintf(f,
124  "#ifdef HAVE_CONFIG_H\n"
125  "#include \"config.h\"\n"
126  "#endif\n\n"
127  "#include \"pcre_internal.h\"\n\n");
128 
129 fprintf(f,
130  "const pcre_uint8 PRIV(default_tables)[] = {\n\n"
131  "/* This table is a lower casing table. */\n\n");
132 
133 fprintf(f, " ");
134 for (i = 0; i < 256; i++)
135  {
136  if ((i & 7) == 0 && i != 0) fprintf(f, "\n ");
137  fprintf(f, "%3d", *tables++);
138  if (i != 255) fprintf(f, ",");
139  }
140 fprintf(f, ",\n\n");
141 
142 fprintf(f, "/* This table is a case flipping table. */\n\n");
143 
144 fprintf(f, " ");
145 for (i = 0; i < 256; i++)
146  {
147  if ((i & 7) == 0 && i != 0) fprintf(f, "\n ");
148  fprintf(f, "%3d", *tables++);
149  if (i != 255) fprintf(f, ",");
150  }
151 fprintf(f, ",\n\n");
152 
153 fprintf(f,
154  "/* This table contains bit maps for various character classes.\n"
155  "Each map is 32 bytes long and the bits run from the least\n"
156  "significant end of each byte. The classes that have their own\n"
157  "maps are: space, xdigit, digit, upper, lower, word, graph\n"
158  "print, punct, and cntrl. Other classes are built from combinations. */\n\n");
159 
160 fprintf(f, " ");
161 for (i = 0; i < cbit_length; i++)
162  {
163  if ((i & 7) == 0 && i != 0)
164  {
165  if ((i & 31) == 0) fprintf(f, "\n");
166  fprintf(f, "\n ");
167  }
168  fprintf(f, "0x%02x", *tables++);
169  if (i != cbit_length - 1) fprintf(f, ",");
170  }
171 fprintf(f, ",\n\n");
172 
173 fprintf(f,
174  "/* This table identifies various classes of character by individual bits:\n"
175  " 0x%02x white space character\n"
176  " 0x%02x letter\n"
177  " 0x%02x decimal digit\n"
178  " 0x%02x hexadecimal digit\n"
179  " 0x%02x alphanumeric or '_'\n"
180  " 0x%02x regular expression metacharacter or binary zero\n*/\n\n",
182  ctype_meta);
183 
184 fprintf(f, " ");
185 for (i = 0; i < 256; i++)
186  {
187  if ((i & 7) == 0 && i != 0)
188  {
189  fprintf(f, " /* ");
190  if (isprint(i-8)) fprintf(f, " %c -", i-8);
191  else fprintf(f, "%3d-", i-8);
192  if (isprint(i-1)) fprintf(f, " %c ", i-1);
193  else fprintf(f, "%3d", i-1);
194  fprintf(f, " */\n ");
195  }
196  fprintf(f, "0x%02x", *tables++);
197  if (i != 255) fprintf(f, ",");
198  }
199 
200 fprintf(f, "};/* ");
201 if (isprint(i-8)) fprintf(f, " %c -", i-8);
202  else fprintf(f, "%3d-", i-8);
203 if (isprint(i-1)) fprintf(f, " %c ", i-1);
204  else fprintf(f, "%3d", i-1);
205 fprintf(f, " */\n\n/* End of pcre_chartables.c */\n");
206 
207 fclose(f);
208 free((void *)base_of_tables);
209 return 0;
210 }
211 
212 /* End of dftables.c */
ctype_word
#define ctype_word
Definition: pcre_internal.h:2590
tables
static const unsigned char * tables(int mode)
Definition: pcre_jit_test.c:855
ctype_meta
#define ctype_meta
Definition: pcre_internal.h:2591
ctype_space
#define ctype_space
Definition: pcre_internal.h:2586
main
int main(int argc, char **argv)
Definition: dftables.c:61
pcre_maketables.c
ctype_letter
#define ctype_letter
Definition: pcre_internal.h:2587
ctype_digit
#define ctype_digit
Definition: pcre_internal.h:2588
cbit_length
#define cbit_length
Definition: pcre_internal.h:2606
pcre_maketables
const unsigned char * pcre_maketables(void)
Definition: pcre_maketables.c:71
ctype_xdigit
#define ctype_xdigit
Definition: pcre_internal.h:2589
pcre_internal.h