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 #include "config.h"
  45
  46 /* Keep the original link size. */
  47 static int real_link_size = LINK_SIZE;
  48
  49 #include "pcre_internal.h"
  50
  51
  52 /*************************************************
  53 * Return info about what features are configured *
  54 *************************************************/
  55
  56 /* This function has an extensible interface so that additional items can be
  57 added compatibly.
  58
  59 Arguments:
  60   what             what information is required
  61   where            where to put the information
  62
  63 Returns:           0 if data returned, negative on error
  64 */
  65
  66 #ifdef COMPILE_PCRE8
  67 PCRE_EXP_DEFN int PCRE_CALL_CONVENTION
  68 pcre_config(int what, void *where)
  69 #else
  70 PCRE_EXP_DEFN int PCRE_CALL_CONVENTION
  71 pcre16_config(int what, void *where)
  72 #endif
  73 {
  74 switch (what)
  75   {
  76   case PCRE_CONFIG_UTF8:
  77 #if defined COMPILE_PCRE16
  78   *((int *)where) = 0;
  79   return PCRE_ERROR_BADOPTION;
  80 #else
  81 #if defined SUPPORT_UTF
  82   *((int *)where) = 1;
  83 #else
  84   *((int *)where) = 0;
  85 #endif
  86   break;
  87 #endif
  88
  89   case PCRE_CONFIG_UTF16:
  90 #if defined COMPILE_PCRE8
  91   *((int *)where) = 0;
  92   return PCRE_ERROR_BADOPTION;
  93 #else
  94 #if defined SUPPORT_UTF
  95   *((int *)where) = 1;
  96 #else
  97   *((int *)where) = 0;
  98 #endif
  99   break;
 100 #endif
 101
 102   case PCRE_CONFIG_UNICODE_PROPERTIES:
 103 #ifdef SUPPORT_UCP
 104   *((int *)where) = 1;
 105 #else
 106   *((int *)where) = 0;
 107 #endif
 108   break;
 109
 110   case PCRE_CONFIG_JIT:
 111 #ifdef SUPPORT_JIT
 112   *((int *)where) = 1;
 113 #else
 114   *((int *)where) = 0;
 115 #endif
 116   break;
 117
 118   case PCRE_CONFIG_JITTARGET:
 119 #ifdef SUPPORT_JIT
 120   *((const char **)where) = PRIV(jit_get_target)();
 121 #else
 122   *((const char **)where) = NULL;
 123 #endif
 124   break;
 125
 126   case PCRE_CONFIG_NEWLINE:
 127   *((int *)where) = NEWLINE;
 128   break;
 129
 130   case PCRE_CONFIG_BSR:
 131 #ifdef BSR_ANYCRLF
 132   *((int *)where) = 1;
 133 #else
 134   *((int *)where) = 0;
 135 #endif
 136   break;
 137
 138   case PCRE_CONFIG_LINK_SIZE:
 139   *((int *)where) = real_link_size;
 140   break;
 141
 142   case PCRE_CONFIG_POSIX_MALLOC_THRESHOLD:
 143   *((int *)where) = POSIX_MALLOC_THRESHOLD;
 144   break;
 145
 146   case PCRE_CONFIG_MATCH_LIMIT:
 147   *((unsigned long int *)where) = MATCH_LIMIT;
 148   break;
 149
 150   case PCRE_CONFIG_MATCH_LIMIT_RECURSION:
 151   *((unsigned long int *)where) = MATCH_LIMIT_RECURSION;
 152   break;
 153
 154   case PCRE_CONFIG_STACKRECURSE:
 155 #ifdef NO_RECURSE
 156   *((int *)where) = 0;
 157 #else
 158   *((int *)where) = 1;
 159 #endif
 160   break;
 161
 162   default: return PCRE_ERROR_BADOPTION;
 163   }
 164
 165 return 0;
 166 }
 167
 168 /* End of pcre_config.c */