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