BESUncompressManager3.h

// BESUncompressManager3.h
 
// This file is part of bes, A C++ back-end server implementation framework
// for the OPeNDAP Data Access Protocol.
 
// Copyright (c) 2012 OPeNDAP, Inc
// Author: James Gallagher <jgallagher@opendap.org>
// Based in code by Patrick West <pwest@ucar.edu> and Jose Garcia <jgarcia@ucar.edu>
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library 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
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
//
// You can contact University Corporation for Atmospheric Research at
// 3080 Center Green Drive, Boulder, CO 80301
 
#ifndef I_BESUncompressManager3_h
#define I_BESUncompressManager3_h 1
 
#include <map>
#include <string>
#include <mutex>
 
#include "BESObj.h"
 
class BESFileLockingCache;
 
typedef void (*p_bes_uncompress)(const std::string &src, int fd);

class BESUncompressManager3: public BESObj {
private:
    static BESUncompressManager3 * d_instance;
    mutable std::recursive_mutex d_cache_lock_mutex;
 
    static void initialize_instance();
    static void delete_instance();
 
    std::map<std::string, p_bes_uncompress> _uncompress_list;
    typedef std::map<std::string, p_bes_uncompress>::const_iterator UCIter;
 
public:
    BESUncompressManager3();
    virtual ~BESUncompressManager3();
 
    virtual bool add_method(const std::string &name, p_bes_uncompress method);
    virtual p_bes_uncompress find_method(const std::string &name);
 
    virtual bool uncompress(const std::string &src, std::string &target, BESFileLockingCache *cache);
 
    virtual void dump(std::ostream &strm) const ;
 
    static BESUncompressManager3 * TheManager();
};
 
#endif // I_BESUncompressManager3_h