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Member "AutoHotkey_L-1.1.33.09/source/lib_pcre/pcre/pcre_fullinfo.c" (8 May 2021, 6582 Bytes) of package /windows/misc/AutoHotkey_L-1.1.33.09.zip:


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    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_fullinfo(), which returns
   42 information about a compiled pattern. */
   43 
   44 
   45 #ifdef HAVE_CONFIG_H
   46 #include "config.h"
   47 #endif
   48 
   49 #include "pcre_internal.h"
   50 
   51 
   52 /*************************************************
   53 *        Return info about compiled pattern      *
   54 *************************************************/
   55 
   56 /* This is a newer "info" function which has an extensible interface so
   57 that additional items can be added compatibly.
   58 
   59 Arguments:
   60   argument_re      points to compiled code
   61   extra_data       points extra data, or NULL
   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_fullinfo(const pcre *argument_re, const pcre_extra *extra_data,
   71   int what, void *where)
   72 #else
   73 PCRE_EXP_DEFN int PCRE_CALL_CONVENTION
   74 pcre16_fullinfo(const pcre16 *argument_re, const pcre16_extra *extra_data,
   75   int what, void *where)
   76 #endif
   77 {
   78 const REAL_PCRE *re = (const REAL_PCRE *)argument_re;
   79 const pcre_study_data *study = NULL;
   80 
   81 if (re == NULL || where == NULL) return PCRE_ERROR_NULL;
   82 
   83 if (extra_data != NULL && (extra_data->flags & PCRE_EXTRA_STUDY_DATA) != 0)
   84   study = (const pcre_study_data *)extra_data->study_data;
   85 
   86 /* Check that the first field in the block is the magic number. If it is not,
   87 return with PCRE_ERROR_BADMAGIC. However, if the magic number is equal to
   88 REVERSED_MAGIC_NUMBER we return with PCRE_ERROR_BADENDIANNESS, which
   89 means that the pattern is likely compiled with different endianness. */
   90 
   91 if (re->magic_number != MAGIC_NUMBER)
   92   return re->magic_number == REVERSED_MAGIC_NUMBER?
   93     PCRE_ERROR_BADENDIANNESS:PCRE_ERROR_BADMAGIC;
   94 
   95 /* Check that this pattern was compiled in the correct bit mode */
   96 
   97 if ((re->flags & PCRE_MODE) == 0) return PCRE_ERROR_BADMODE;
   98 
   99 switch (what)
  100   {
  101   case PCRE_INFO_OPTIONS:
  102   *((unsigned long int *)where) = re->options & PUBLIC_COMPILE_OPTIONS;
  103   break;
  104 
  105   case PCRE_INFO_SIZE:
  106   *((size_t *)where) = re->size;
  107   break;
  108 
  109   case PCRE_INFO_STUDYSIZE:
  110   *((size_t *)where) = (study == NULL)? 0 : study->size;
  111   break;
  112 
  113   case PCRE_INFO_JITSIZE:
  114 #ifdef SUPPORT_JIT
  115   *((size_t *)where) =
  116       (extra_data != NULL &&
  117       (extra_data->flags & PCRE_EXTRA_EXECUTABLE_JIT) != 0 &&
  118       extra_data->executable_jit != NULL)?
  119     PRIV(jit_get_size)(extra_data->executable_jit) : 0;
  120 #else
  121   *((size_t *)where) = 0;
  122 #endif
  123   break;
  124 
  125   case PCRE_INFO_CAPTURECOUNT:
  126   *((int *)where) = re->top_bracket;
  127   break;
  128 
  129   case PCRE_INFO_BACKREFMAX:
  130   *((int *)where) = re->top_backref;
  131   break;
  132 
  133   case PCRE_INFO_FIRSTBYTE:
  134   *((int *)where) =
  135     ((re->flags & PCRE_FIRSTSET) != 0)? re->first_char :
  136     ((re->flags & PCRE_STARTLINE) != 0)? -1 : -2;
  137   break;
  138 
  139   /* Make sure we pass back the pointer to the bit vector in the external
  140   block, not the internal copy (with flipped integer fields). */
  141 
  142   case PCRE_INFO_FIRSTTABLE:
  143   *((const pcre_uint8 **)where) =
  144     (study != NULL && (study->flags & PCRE_STUDY_MAPPED) != 0)?
  145       ((const pcre_study_data *)extra_data->study_data)->start_bits : NULL;
  146   break;
  147 
  148   case PCRE_INFO_MINLENGTH:
  149   *((int *)where) =
  150     (study != NULL && (study->flags & PCRE_STUDY_MINLEN) != 0)?
  151       (int)(study->minlength) : -1;
  152   break;
  153 
  154   case PCRE_INFO_JIT:
  155   *((int *)where) = extra_data != NULL &&
  156                     (extra_data->flags & PCRE_EXTRA_EXECUTABLE_JIT) != 0 &&
  157                     extra_data->executable_jit != NULL;
  158   break;
  159 
  160   case PCRE_INFO_LASTLITERAL:
  161   *((int *)where) =
  162     ((re->flags & PCRE_REQCHSET) != 0)? re->req_char : -1;
  163   break;
  164 
  165   case PCRE_INFO_NAMEENTRYSIZE:
  166   *((int *)where) = re->name_entry_size;
  167   break;
  168 
  169   case PCRE_INFO_NAMECOUNT:
  170   *((int *)where) = re->name_count;
  171   break;
  172 
  173   case PCRE_INFO_NAMETABLE:
  174   *((const pcre_uchar **)where) = (const pcre_uchar *)re + re->name_table_offset;
  175   break;
  176 
  177   case PCRE_INFO_DEFAULT_TABLES:
  178   *((const pcre_uint8 **)where) = (const pcre_uint8 *)(PRIV(default_tables));
  179   break;
  180 
  181   /* From release 8.00 this will always return TRUE because NOPARTIAL is
  182   no longer ever set (the restrictions have been removed). */
  183 
  184   case PCRE_INFO_OKPARTIAL:
  185   *((int *)where) = (re->flags & PCRE_NOPARTIAL) == 0;
  186   break;
  187 
  188   case PCRE_INFO_JCHANGED:
  189   *((int *)where) = (re->flags & PCRE_JCHANGED) != 0;
  190   break;
  191 
  192   case PCRE_INFO_HASCRORLF:
  193   *((int *)where) = (re->flags & PCRE_HASCRORLF) != 0;
  194   break;
  195 
  196   default: return PCRE_ERROR_BADOPTION;
  197   }
  198 
  199 return 0;
  200 }
  201 
  202 /* End of pcre_fullinfo.c */