pcre_config.c

   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 */