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) 1997-2008 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 #include "pcre_internal.h"

    49 

    50 

    51 /*************************************************

    52 * Return info about what features are configured *

    53 *************************************************/

    54 

    55 /* This function has an extensible interface so that additional items can be

    56 added compatibly.

    57 

    58 Arguments:

    59   what             what information is required

    60   where            where to put the information

    61 

    62 Returns:           0 if data returned, negative on error

    63 */

    64 

    65 PCRE_EXP_DEFN int PCRE_CALL_CONVENTION

    66 pcre_config(int what, void *where)

    67 {

    68 switch (what)

    69   {

    70   case PCRE_CONFIG_UTF8:

    71 #ifdef SUPPORT_UTF8

    72   *((int *)where) = 1;

    73 #else

    74   *((int *)where) = 0;

    75 #endif

    76   break;

    77 

    78   case PCRE_CONFIG_UNICODE_PROPERTIES:

    79 #ifdef SUPPORT_UCP

    80   *((int *)where) = 1;

    81 #else

    82   *((int *)where) = 0;

    83 #endif

    84   break;

    85 

    86   case PCRE_CONFIG_NEWLINE:

    87   *((int *)where) = NEWLINE;

    88   break;

    89 

    90   case PCRE_CONFIG_BSR:

    91 #ifdef BSR_ANYCRLF

    92   *((int *)where) = 1;

    93 #else

    94   *((int *)where) = 0;

    95 #endif

    96   break;

    97 

    98   case PCRE_CONFIG_LINK_SIZE:

    99   *((int *)where) = LINK_SIZE;

   100   break;

   101 

   102   case PCRE_CONFIG_POSIX_MALLOC_THRESHOLD:

   103   *((int *)where) = POSIX_MALLOC_THRESHOLD;

   104   break;

   105 

   106   case PCRE_CONFIG_MATCH_LIMIT:

   107   *((unsigned int *)where) = MATCH_LIMIT;

   108   break;

   109 

   110   case PCRE_CONFIG_MATCH_LIMIT_RECURSION:

   111   *((unsigned int *)where) = MATCH_LIMIT_RECURSION;

   112   break;

   113 

   114   case PCRE_CONFIG_STACKRECURSE:

   115 #ifdef NO_RECURSE

   116   *((int *)where) = 0;

   117 #else

   118   *((int *)where) = 1;

   119 #endif

   120   break;

   121 

   122   default: return PCRE_ERROR_BADOPTION;

   123   }

   124 

   125 return 0;

   126 }

   127 

   128 /* End of pcre_config.c */