/*
 * Copyright 2002, Haiku, Inc. All rights reserved.
 * Distributed under the terms of the MIT License.
 *
 * Authors:
 *              Tyler Dauwalder
 */

/*!
        \file sniffer/Rule.h
        Mime sniffer rule declarations
*/

#ifndef _SNIFFER_RULE_H
#define _SNIFFER_RULE_H

#include <SupportDefs.h>

#include <sys/types.h>
#include <vector>


namespace BPrivate {
namespace Storage {
namespace Sniffer {

class DisjList;
struct Data;


/*! \brief A priority and a list of expressions to be used for sniffing out the
        type of an untyped file.
*/
class Rule {
public:
        Rule();
        ~Rule();

        status_t InitCheck() const;
        double Priority() const;
        bool Sniff(const Data& data) const;
        ssize_t BytesNeeded() const;
private:
        friend class Parser;

        void Unset();
        void SetTo(double priority, std::vector<DisjList*>* list);

        double fPriority;
        std::vector<DisjList*> *fConjList;      // A list of DisjLists to be ANDed
};


}; // namespace Sniffer
}; // namespace Storage
}; // namespace BPrivate

#endif // _SNIFFER_RULE_H