1 /*************************************************
2 * Perl-Compatible Regular Expressions *
3 *************************************************/
4
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 module contains the external function pcre_config(). */
42
43
44 #ifdef HAVE_CONFIG_H
45 #include "config.h"
46 #endif
47
48 /* Keep the original link size. */
49 static int real_link_size = LINK_SIZE;
50
51 #include "pcre_internal.h"
52
53
54 /*************************************************
55 * Return info about what features are configured *
56 *************************************************/
57
58 /* This function has an extensible interface so that additional items can be
59 added compatibly.
60
61 Arguments:
62 what what information is required
63 where where to put the information
64
65 Returns: 0 if data returned, negative on error
66 */
67
68 #if defined COMPILE_PCRE8
69 PCRE_EXP_DEFN int PCRE_CALL_CONVENTION
70 pcre_config(int what, void *where)
71 #elif defined COMPILE_PCRE16
72 PCRE_EXP_DEFN int PCRE_CALL_CONVENTION
73 pcre16_config(int what, void *where)
74 #elif defined COMPILE_PCRE32
75 PCRE_EXP_DEFN int PCRE_CALL_CONVENTION
76 pcre32_config(int what, void *where)
77 #endif
78 {
79 switch (what)
80 {
81 case PCRE_CONFIG_UTF8:
82 #if defined COMPILE_PCRE16 || defined COMPILE_PCRE32
83 *((int *)where) = 0;
84 return PCRE_ERROR_BADOPTION;
85 #else
86 #if defined SUPPORT_UTF
87 *((int *)where) = 1;
88 #else
89 *((int *)where) = 0;
90 #endif
91 break;
92 #endif
93
94 case PCRE_CONFIG_UTF16:
95 #if defined COMPILE_PCRE8 || defined COMPILE_PCRE32
96 *((int *)where) = 0;
97 return PCRE_ERROR_BADOPTION;
98 #else
99 #if defined SUPPORT_UTF
100 *((int *)where) = 1;
101 #else
102 *((int *)where) = 0;
103 #endif
104 break;
105 #endif
106
107 case PCRE_CONFIG_UTF32:
108 #if defined COMPILE_PCRE8 || defined COMPILE_PCRE16
109 *((int *)where) = 0;
110 return PCRE_ERROR_BADOPTION;
111 #else
112 #if defined SUPPORT_UTF
113 *((int *)where) = 1;
114 #else
115 *((int *)where) = 0;
116 #endif
117 break;
118 #endif
119
120 case PCRE_CONFIG_UNICODE_PROPERTIES:
121 #ifdef SUPPORT_UCP
122 *((int *)where) = 1;
123 #else
124 *((int *)where) = 0;
125 #endif
126 break;
127
128 case PCRE_CONFIG_JIT:
129 #ifdef SUPPORT_JIT
130 *((int *)where) = 1;
131 #else
132 *((int *)where) = 0;
133 #endif
134 break;
135
136 case PCRE_CONFIG_JITTARGET:
137 #ifdef SUPPORT_JIT
138 *((const char **)where) = PRIV(jit_get_target)();
139 #else
140 *((const char **)where) = NULL;
141 #endif
142 break;
143
144 case PCRE_CONFIG_NEWLINE:
145 *((int *)where) = NEWLINE;
146 break;
147
148 case PCRE_CONFIG_BSR:
149 #ifdef BSR_ANYCRLF
150 *((int *)where) = 1;
151 #else
152 *((int *)where) = 0;
153 #endif
154 break;
155
156 case PCRE_CONFIG_LINK_SIZE:
157 *((int *)where) = real_link_size;
158 break;
159
160 case PCRE_CONFIG_POSIX_MALLOC_THRESHOLD:
161 *((int *)where) = POSIX_MALLOC_THRESHOLD;
162 break;
163
164 case PCRE_CONFIG_PARENS_LIMIT:
165 *((unsigned long int *)where) = PARENS_NEST_LIMIT;
166 break;
167
168 case PCRE_CONFIG_MATCH_LIMIT:
169 *((unsigned long int *)where) = MATCH_LIMIT;
170 break;
171
172 case PCRE_CONFIG_MATCH_LIMIT_RECURSION:
173 *((unsigned long int *)where) = MATCH_LIMIT_RECURSION;
174 break;
175
176 case PCRE_CONFIG_STACKRECURSE:
177 #ifdef NO_RECURSE
178 *((int *)where) = 0;
179 #else
180 *((int *)where) = 1;
181 #endif
182 break;
183
184 default: return PCRE_ERROR_BADOPTION;
185 }
186
187 return 0;
188 }
189
190 /* End of pcre_config.c */