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 #ifdef COMPILE_PCRE8
67 PCRE_EXP_DEFN int PCRE_CALL_CONVENTION
pcre_config(int what,void * where)68 pcre_config(int what, void *where)
69 #else
70 PCRE_EXP_DEFN int PCRE_CALL_CONVENTION
71 pcre16_config(int what, void *where)
72 #endif
73 {
74 switch (what)
75 {
76 case PCRE_CONFIG_UTF8:
77 #if defined COMPILE_PCRE16
78 *((int *)where) = 0;
79 return PCRE_ERROR_BADOPTION;
80 #else
81 #if defined SUPPORT_UTF
82 *((int *)where) = 1;
83 #else
84 *((int *)where) = 0;
85 #endif
86 break;
87 #endif
88
89 case PCRE_CONFIG_UTF16:
90 #if defined COMPILE_PCRE8
91 *((int *)where) = 0;
92 return PCRE_ERROR_BADOPTION;
93 #else
94 #if defined SUPPORT_UTF
95 *((int *)where) = 1;
96 #else
97 *((int *)where) = 0;
98 #endif
99 break;
100 #endif
101
102 case PCRE_CONFIG_UNICODE_PROPERTIES:
103 #ifdef SUPPORT_UCP
104 *((int *)where) = 1;
105 #else
106 *((int *)where) = 0;
107 #endif
108 break;
109
110 case PCRE_CONFIG_JIT:
111 #ifdef SUPPORT_JIT
112 *((int *)where) = 1;
113 #else
114 *((int *)where) = 0;
115 #endif
116 break;
117
118 case PCRE_CONFIG_JITTARGET:
119 #ifdef SUPPORT_JIT
120 *((const char **)where) = PRIV(jit_get_target)();
121 #else
122 *((const char **)where) = NULL;
123 #endif
124 break;
125
126 case PCRE_CONFIG_NEWLINE:
127 *((int *)where) = NEWLINE;
128 break;
129
130 case PCRE_CONFIG_BSR:
131 #ifdef BSR_ANYCRLF
132 *((int *)where) = 1;
133 #else
134 *((int *)where) = 0;
135 #endif
136 break;
137
138 case PCRE_CONFIG_LINK_SIZE:
139 *((int *)where) = real_link_size;
140 break;
141
142 case PCRE_CONFIG_POSIX_MALLOC_THRESHOLD:
143 *((int *)where) = POSIX_MALLOC_THRESHOLD;
144 break;
145
146 case PCRE_CONFIG_MATCH_LIMIT:
147 *((unsigned long int *)where) = MATCH_LIMIT;
148 break;
149
150 case PCRE_CONFIG_MATCH_LIMIT_RECURSION:
151 *((unsigned long int *)where) = MATCH_LIMIT_RECURSION;
152 break;
153
154 case PCRE_CONFIG_STACKRECURSE:
155 #ifdef NO_RECURSE
156 *((int *)where) = 0;
157 #else
158 *((int *)where) = 1;
159 #endif
160 break;
161
162 default: return PCRE_ERROR_BADOPTION;
163 }
164
165 return 0;
166 }
167
168 /* End of pcre_config.c */
169