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 */
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