/*************************************************
*      Perl-Compatible Regular Expressions       *
*************************************************/

/* PCRE is a library of functions to support regular expressions whose syntax
and semantics are as close as possible to those of the Perl 5 language.

                       Written by Philip Hazel
     Original API code Copyright (c) 1997-2012 University of Cambridge
         New API code Copyright (c) 2014 University of Cambridge

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*/


#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include "pcre2_internal.h"


/*************************************************
*           Match a Regular Expression           *
*************************************************/

/* This function applies a compiled re to a subject string and picks out
portions of the string if it matches. Two elements in the vector are set for
each substring: the offsets to the start and end of the substring.

Arguments:
  context         points a PCRE2 context
  code            points to the compiled expression
  subject         points to the subject string
  length          length of subject string (may contain binary zeros)
  start_offset    where to start in the subject string
  options         option bits
  match_data      points to a match_data block 

Returns:          > 0 => success; value is the number of ovector pairs filled
                  = 0 => success, but ovector is not big enough
                   -1 => failed to match (PCRE_ERROR_NOMATCH)
                 < -1 => some kind of unexpected problem
*/

/* FIXME: this is currently a placeholder function */

PCRE2_EXP_DEFN int PCRE2_CALL_CONVENTION
pcre2_match(const pcre2_code *code, PCRE2_SPTR subject, int length, 
  size_t start_offset, uint32_t options, pcre2_match_data *match_data, 
  pcre2_match_context *mcontext)
{

/* Fudge for testing pcre2test */

if (subject[start_offset] == 'Y')
  {
  match_data->leftchar = 0;
  match_data->rightchar = 3;
  match_data->startchar = 0;
  match_data->mark = NULL;
  
  switch (match_data->oveccount)
    {
    case 0: return 0;
    
    case 1: match_data->ovector[0] = start_offset; 
            match_data->ovector[1] = start_offset + 4;
            return 0;
            
    default: match_data->ovector[0] = start_offset; 
             match_data->ovector[1] = start_offset + 4;
             match_data->ovector[2] = start_offset + 1;    
             match_data->ovector[3] = start_offset + 3;
             return 2;
    }  
  } 


mcontext=mcontext;code=code;subject=subject;length=length;
start_offset=start_offset; options=options; match_data=match_data;
return PCRE2_ERROR_NOMATCH;
}    

/* End of pcre2_match.c */