glib/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
   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 #ifdef COMPILE_PCRE8
  69 PCRE_EXP_DEFN int PCRE_CALL_CONVENTION
  70 pcre_config(int what, void *where)
  71 #else
  72 PCRE_EXP_DEFN int PCRE_CALL_CONVENTION
  73 pcre16_config(int what, void *where)
  74 #endif
  75 {
  76 switch (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
 167 return 0;
 168 }
 169
 170 /* End of pcre_config.c */