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Root/pcre/pcre_config.c

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) 1997-2008 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#include "pcre_config.h"
45
46#include "pcre_internal.h"
47
48
49/*************************************************
50* Return info about what features are configured *
51*************************************************/
52
53/* This function has an extensible interface so that additional items can be
54added compatibly.
55
56Arguments:
57 what what information is required
58 where where to put the information
59
60Returns: 0 if data returned, negative on error
61*/
62
63PCRE_EXP_DEFN int
64pcre_config(int what, void *where)
65{
66switch (what)
67 {
68 case PCRE_CONFIG_UTF8:
69#ifdef SUPPORT_UTF8
70 *((int *)where) = 1;
71#else
72 *((int *)where) = 0;
73#endif
74 break;
75
76 case PCRE_CONFIG_UNICODE_PROPERTIES:
77#ifdef SUPPORT_UCP
78 *((int *)where) = 1;
79#else
80 *((int *)where) = 0;
81#endif
82 break;
83
84 case PCRE_CONFIG_NEWLINE:
85 *((int *)where) = NEWLINE;
86 break;
87
88 case PCRE_CONFIG_BSR:
89#ifdef BSR_ANYCRLF
90 *((int *)where) = 1;
91#else
92 *((int *)where) = 0;
93#endif
94 break;
95
96 case PCRE_CONFIG_LINK_SIZE:
97 *((int *)where) = LINK_SIZE;
98 break;
99
100 case PCRE_CONFIG_POSIX_MALLOC_THRESHOLD:
101 *((int *)where) = POSIX_MALLOC_THRESHOLD;
102 break;
103
104 case PCRE_CONFIG_MATCH_LIMIT:
105 *((unsigned int *)where) = MATCH_LIMIT;
106 break;
107
108 case PCRE_CONFIG_MATCH_LIMIT_RECURSION:
109 *((unsigned int *)where) = MATCH_LIMIT_RECURSION;
110 break;
111
112 case PCRE_CONFIG_STACKRECURSE:
113#ifdef NO_RECURSE
114 *((int *)where) = 0;
115#else
116 *((int *)where) = 1;
117#endif
118 break;
119
120 default: return PCRE_ERROR_BADOPTION;
121 }
122
123return 0;
124}
125
126/* End of pcre_config.c */

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