1/*************************************************
2*      Perl-Compatible Regular Expressions       *
3*************************************************/
4
5/* PCRE is a library of functions to support regular expressions whose syntax
6and 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-----------------------------------------------------------------------------
12Redistribution and use in source and binary forms, with or without
13modification, 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
26THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
27AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
28IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
29ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
30LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
31CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
32SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
33INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
34CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
35ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
36POSSIBILITY 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. */
49static 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
59added compatibly.
60
61Arguments:
62  what             what information is required
63  where            where to put the information
64
65Returns:           0 if data returned, negative on error
66*/
67
68#ifdef COMPILE_PCRE8
69PCRE_EXP_DEFN int PCRE_CALL_CONVENTION
70pcre_config(int what, void *where)
71#else
72PCRE_EXP_DEFN int PCRE_CALL_CONVENTION
73pcre16_config(int what, void *where)
74#endif
75{
76switch (what)
77  {
78  case PCRE_CONFIG_UTF8:
79#if defined COMPILE_PCRE16
80  *((int *)where) = 0;
81  return PCRE_ERROR_BADOPTION;
82#else
83#if defined SUPPORT_UTF
84  *((int *)where) = 1;
85#else
86  *((int *)where) = 0;
87#endif
88  break;
89#endif
90
91  case PCRE_CONFIG_UTF16:
92#if defined COMPILE_PCRE8
93  *((int *)where) = 0;
94  return PCRE_ERROR_BADOPTION;
95#else
96#if defined SUPPORT_UTF
97  *((int *)where) = 1;
98#else
99  *((int *)where) = 0;
100#endif
101  break;
102#endif
103
104  case PCRE_CONFIG_UNICODE_PROPERTIES:
105#ifdef SUPPORT_UCP
106  *((int *)where) = 1;
107#else
108  *((int *)where) = 0;
109#endif
110  break;
111
112  case PCRE_CONFIG_JIT:
113#ifdef SUPPORT_JIT
114  *((int *)where) = 1;
115#else
116  *((int *)where) = 0;
117#endif
118  break;
119
120  case PCRE_CONFIG_JITTARGET:
121#ifdef SUPPORT_JIT
122  *((const char **)where) = PRIV(jit_get_target)();
123#else
124  *((const char **)where) = NULL;
125#endif
126  break;
127
128  case PCRE_CONFIG_NEWLINE:
129  *((int *)where) = NEWLINE;
130  break;
131
132  case PCRE_CONFIG_BSR:
133#ifdef BSR_ANYCRLF
134  *((int *)where) = 1;
135#else
136  *((int *)where) = 0;
137#endif
138  break;
139
140  case PCRE_CONFIG_LINK_SIZE:
141  *((int *)where) = real_link_size;
142  break;
143
144  case PCRE_CONFIG_POSIX_MALLOC_THRESHOLD:
145  *((int *)where) = POSIX_MALLOC_THRESHOLD;
146  break;
147
148  case PCRE_CONFIG_MATCH_LIMIT:
149  *((unsigned long int *)where) = MATCH_LIMIT;
150  break;
151
152  case PCRE_CONFIG_MATCH_LIMIT_RECURSION:
153  *((unsigned long int *)where) = MATCH_LIMIT_RECURSION;
154  break;
155
156  case PCRE_CONFIG_STACKRECURSE:
157#ifdef NO_RECURSE
158  *((int *)where) = 0;
159#else
160  *((int *)where) = 1;
161#endif
162  break;
163
164  default: return PCRE_ERROR_BADOPTION;
165  }
166
167return 0;
168}
169
170/* End of pcre_config.c */
171