/[pcre]/code/trunk/dftables.c
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Contents of /code/trunk/dftables.c

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Revision 1221 - (hide annotations) (download)
Sun Nov 11 20:27:03 2012 UTC (20 months, 1 week ago) by ph10
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File size: 6972 byte(s)
File tidies, preparing for 8.32-RC1.

1 nigel 27 /*************************************************
2     * Perl-Compatible Regular Expressions *
3     *************************************************/
4    
5 nigel 77 /* PCRE is a library of functions to support regular expressions whose syntax
6 nigel 27 and semantics are as close as possible to those of the Perl 5 language.
7    
8 nigel 77 Written by Philip Hazel
9 ph10 836 Copyright (c) 1997-2012 University of Cambridge
10 nigel 27
11     -----------------------------------------------------------------------------
12 nigel 75 Redistribution and use in source and binary forms, with or without
13     modification, are permitted provided that the following conditions are met:
14 nigel 27
15 nigel 75 * Redistributions of source code must retain the above copyright notice,
16     this list of conditions and the following disclaimer.
17 nigel 27
18 nigel 75 * 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 nigel 27
22 nigel 75 * 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 nigel 29
26 nigel 75 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 nigel 27 -----------------------------------------------------------------------------
38     */
39    
40    
41 ph10 128 /* 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 nigel 77 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 nigel 27
46 ph10 200 #ifdef HAVE_CONFIG_H
47 ph10 236 #include "config.h"
48 ph10 200 #endif
49 ph10 199
50 nigel 27 #include <ctype.h>
51     #include <stdio.h>
52     #include <string.h>
53 ph10 128 #include <locale.h>
54 nigel 27
55 nigel 77 #include "pcre_internal.h"
56 nigel 27
57 nigel 77 #define DFTABLES /* pcre_maketables.c notices this */
58     #include "pcre_maketables.c"
59 nigel 27
60    
61 nigel 73 int main(int argc, char **argv)
62 nigel 27 {
63 nigel 73 FILE *f;
64 ph10 128 int i = 1;
65     const unsigned char *tables;
66     const unsigned char *base_of_tables;
67 nigel 27
68 ph10 128 /* 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 nigel 73 {
74 ph10 128 setlocale(LC_ALL, ""); /* Set from environment variables */
75     i++;
76     }
77    
78     if (argc < i + 1)
79     {
80 nigel 73 fprintf(stderr, "dftables: one filename argument is required\n");
81     return 1;
82     }
83    
84 ph10 128 tables = pcre_maketables();
85     base_of_tables = tables;
86    
87     f = fopen(argv[i], "wb");
88 nigel 73 if (f == NULL)
89     {
90     fprintf(stderr, "dftables: failed to open %s for writing\n", argv[1]);
91     return 1;
92     }
93    
94 ph10 128 /* There are several fprintf() calls here, because gcc in pedantic mode
95     complains about the very long string otherwise. */
96 nigel 65
97 nigel 73 fprintf(f,
98 nigel 27 "/*************************************************\n"
99     "* Perl-Compatible Regular Expressions *\n"
100     "*************************************************/\n\n"
101 ph10 128 "/* 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 nigel 73 fprintf(f,
106 ph10 199 "The following #includes are present because without them gcc 4.x may remove\n"
107 nigel 93 "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 ph10 1027 "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 ph10 200 "#ifdef HAVE_CONFIG_H\n"
125 ph10 241 "#include \"config.h\"\n"
126 ph10 200 "#endif\n\n"
127 nigel 93 "#include \"pcre_internal.h\"\n\n");
128 ph10 1221
129 nigel 93 fprintf(f,
130 ph10 836 "const pcre_uint8 PRIV(default_tables)[] = {\n\n"
131 nigel 27 "/* This table is a lower casing table. */\n\n");
132    
133 nigel 73 fprintf(f, " ");
134 nigel 27 for (i = 0; i < 256; i++)
135     {
136 nigel 73 if ((i & 7) == 0 && i != 0) fprintf(f, "\n ");
137     fprintf(f, "%3d", *tables++);
138     if (i != 255) fprintf(f, ",");
139 nigel 27 }
140 nigel 73 fprintf(f, ",\n\n");
141 nigel 27
142 nigel 73 fprintf(f, "/* This table is a case flipping table. */\n\n");
143 nigel 27
144 nigel 73 fprintf(f, " ");
145 nigel 27 for (i = 0; i < 256; i++)
146     {
147 nigel 73 if ((i & 7) == 0 && i != 0) fprintf(f, "\n ");
148     fprintf(f, "%3d", *tables++);
149     if (i != 255) fprintf(f, ",");
150 nigel 27 }
151 nigel 73 fprintf(f, ",\n\n");
152 nigel 27
153 nigel 73 fprintf(f,
154 nigel 43 "/* 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 nigel 27
160 nigel 73 fprintf(f, " ");
161 nigel 27 for (i = 0; i < cbit_length; i++)
162     {
163     if ((i & 7) == 0 && i != 0)
164     {
165 nigel 73 if ((i & 31) == 0) fprintf(f, "\n");
166     fprintf(f, "\n ");
167 nigel 27 }
168 nigel 73 fprintf(f, "0x%02x", *tables++);
169     if (i != cbit_length - 1) fprintf(f, ",");
170 nigel 27 }
171 nigel 73 fprintf(f, ",\n\n");
172 nigel 27
173 nigel 73 fprintf(f,
174 nigel 27 "/* 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",
181     ctype_space, ctype_letter, ctype_digit, ctype_xdigit, ctype_word,
182     ctype_meta);
183    
184 nigel 73 fprintf(f, " ");
185 nigel 27 for (i = 0; i < 256; i++)
186     {
187     if ((i & 7) == 0 && i != 0)
188     {
189 nigel 73 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 nigel 27 }
196 nigel 73 fprintf(f, "0x%02x", *tables++);
197     if (i != 255) fprintf(f, ",");
198 nigel 27 }
199    
200 nigel 73 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 ph10 128 fprintf(f, " */\n\n/* End of pcre_chartables.c */\n");
206 nigel 27
207 nigel 73 fclose(f);
208 nigel 77 free((void *)base_of_tables);
209 nigel 27 return 0;
210     }
211    
212     /* End of dftables.c */

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