ng_find_matches.h

/*
 * Copyright (c) 2015-2017, Intel Corporation
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *  * Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 *  * Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *  * Neither the name of Intel Corporation nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

/** \file
 * \brief Pattern matching based on direct NFA execution.
 */

#ifndef NG_FIND_MATCHES_H
#define NG_FIND_MATCHES_H

#include <string>
#include <set>

namespace ue2 {

class NGHolder;
class ReportManager;
struct BoundaryReports;

} // namespace ue2

/**
 * \brief Find all matches for a given graph when executed against \a input.
 *
 * Fills \a matches with offsets into the data stream where a match is found.
 *
 * Returns false if this graph is too large to find its matches in reasonable
 * time.
 */
bool findMatches(const ue2::NGHolder &g, const ue2::ReportManager &rm,
                 const std::string &input,
                 std::set<std::pair<size_t, size_t>> &matches,
                 const unsigned int max_edit_distance,
                 const unsigned int max_hamm_distance, const bool notEod,
                 const bool utf8);

#endif // NG_FIND_MATCHES_H