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/*
* libopenraw - rawfilefactory.h
*
* Copyright (C) 2006, 2008 Hubert Figuiere
*
* 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 3 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, see
* <http://www.gnu.org/licenses/>.
*/
#ifndef __RAWFILEFACTORY_H
#define __RAWFILEFACTORY_H
#include <string>
#include <map>
#include <boost/function.hpp>
#include <libopenraw++/rawfile.h>
namespace OpenRaw {
namespace Internals {
class RawFileFactory
{
public:
typedef boost::function<RawFile *(IO::Stream *)> raw_file_factory_t;
/** the factory type for raw files
* key is the extension. file is factory method
*/
typedef
std::map<RawFile::Type, raw_file_factory_t> Table;
typedef
std::map<std::string, RawFile::Type> Extensions;
/** register a filetype with the factory
* @param type the type of file
* @param fn the factory method
* @param ext the extension associated
* @note it is safe to call this method with the same
* fn and type to register a different extension
*/
RawFileFactory(RawFile::Type type,
const raw_file_factory_t & fn,
const char * ext);
/** access the table. Ensure that it has been constructed. */
static Table & table();
/** access the extensions table. Ensure that it has been constructed. */
static Extensions & extensions();
/** access the the list of file extenstions registered. */
static const char **fileExtensions();
static void registerType(RawFile::Type type,
const raw_file_factory_t & fn,
const char * ext);
static void unRegisterType(RawFile::Type type);
};
/** accessor. This make sure the instance has been
* constructed when needed
*/
inline RawFileFactory::Table & RawFileFactory::table()
{
/** the factory table */
static Table rawFactoryTable;
return rawFactoryTable;
}
inline RawFileFactory::Extensions & RawFileFactory::extensions()
{
/** the factory table */
static Extensions rawExtensionsTable;
return rawExtensionsTable;
}
}
}
#endif
/*
Local Variables:
mode:c++
c-file-style:"stroustrup"
c-file-offsets:((innamespace . 0))
indent-tabs-mode:nil
fill-column:80
End:
*/
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