ClamAV is an open source (GPLv2) anti-virus toolkit.
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clamav/clamav-devel/libclamav/matcher.h

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/*
* Copyright (C) 2002 Tomasz Kojm <zolw@konarski.edu.pl>
*
* 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 2 of the License, 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef __MATCHER_H
#define __MATCHER_H
#include "clamav.h"
struct nodelist {
struct cl_node *node;
struct nodelist *next;
};
int cli_addpatt(struct cl_node *root, struct cli_patt *pattern);
struct nodelist *cli_bfsadd(struct nodelist *bfs, struct cl_node *n);
void cli_failtrans(struct cl_node *root);
void cli_fasttrie(struct cl_node *n, struct cl_node *root);
int cli_findpos(const char *buffer, int offset, int length, const struct cli_patt *pattern);
#endif