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

/*!
        \file sniffer/Err.h
        Mime Sniffer Error class declarations
*/

#ifndef _SNIFFER_ERR_H
#define _SNIFFER_ERR_H

#include <SupportDefs.h>
#include <string>

namespace BPrivate {
namespace Storage {
namespace Sniffer {

//! Exception class used by the MIME Sniffer
/*! Each exception contains an error message, and an byte offset into
        the original rule that generated the error, for the sake of
        providing spiffy error messages of the following sort:

        <code>
        "1.0 ('abc' & 0xFFAAFFAA)"
                      ^    Sniffer pattern error: pattern and mask lengths do not match
        </code>
*/
class Err {
public:
        Err(const char *msg, const ssize_t pos);
        Err(const std::string &msg, const ssize_t pos);
        Err(const Err &ref);
        virtual ~Err(); 
        Err& operator=(const Err &ref);
        
        status_t SetTo(const char *msg, const ssize_t pos);
        status_t SetTo(const std::string &msg, const ssize_t pos);
        void Unset();
        
        void SetMsg(const char *msg);
        void SetPos(ssize_t pos);

        const char* Msg() const;
        ssize_t Pos() const;
        
private:
        char *fMsg;
        ssize_t fPos;
};

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

#endif // _SNIFFER_ERR_H