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/* search.c - searching subroutines using dfa, kwset and regex for grep.
Copyright 1992, 1998, 2000, 2007, 2009-2012 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
02110-1301, USA. */
#ifndef GREP_SEARCH_H
#define GREP_SEARCH_H 1
#include <config.h>
#include <sys/types.h>
#include "mbsupport.h"
#include <wchar.h>
#include <wctype.h>
#include <regex.h>
#include "system.h"
#include "error.h"
#include "grep.h"
#include "kwset.h"
#include "xalloc.h"
/* searchutils.c */
extern void kwsinit (kwset_t *);
extern char *mbtolower (const char *, size_t *, unsigned char **);
extern bool is_mb_middle (const char **, const char *, const char *, size_t);
/* dfasearch.c */
extern void GEAcompile (char const *, size_t, reg_syntax_t);
extern size_t EGexecute (char const *, size_t, size_t *, char const *);
/* kwsearch.c */
extern void Fcompile (char const *, size_t);
extern size_t Fexecute (char const *, size_t, size_t *, char const *);
/* pcresearch.c */
extern void Pcompile (char const *, size_t);
extern size_t Pexecute (char const *, size_t, size_t *, char const *);
/* Apply a non-NULL MAP from mbtolower to the lowercase-buffer-relative
*OFF and *LEN, converting them to be relative to the original buffer. */
static inline void
mb_case_map_apply (unsigned char const *map, size_t *off, size_t *len)
{
if (map)
{
size_t off_incr = 0;
size_t len_incr = 0;
size_t k;
for (k = 0; k < *off; k++)
off_incr += map[k];
for (k = *off; k < *off + *len; k++)
len_incr += map[k];
*off += off_incr;
*len += len_incr;
}
}
#endif /* GREP_SEARCH_H */
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