metavalue.h

00001 /*
00002  * libopenraw - metavalue.h
00003  *
00004  * Copyright (C) 2007 Hubert Figuiere
00005  * Copyright (C) 2008 Novell, Inc.
00006  *
00007  * This library is free software: you can redistribute it and/or
00008  * modify it under the terms of the GNU Lesser General Public License
00009  * as published by the Free Software Foundation, either version 3 of
00010  * the License, or (at your option) any later version.
00011  *
00012  * This library is distributed in the hope that it will be useful,
00013  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00014  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00015  * Lesser General Public License for more details.
00016  *
00017  * You should have received a copy of the GNU Lesser General Public
00018  * License along with this library.  If not, see
00019  * <http://www.gnu.org/licenses/>.
00020  */
00021 
00022 
00023 #ifndef _OPENRAW_METAVALUE_H
00024 #define _OPENRAW_METAVALUE_H
00025 
00026 #include <boost/variant.hpp>
00027 #include <libopenraw/types.h>
00028 
00029 #include "ifdentry.h"
00030 
00031 namespace OpenRaw {
00032     
00033 class MetaValue
00034 {
00035 public:
00036     typedef boost::variant<std::string, uint32_t> value_t;
00037 
00038     MetaValue(const MetaValue &);
00039     template <class T> MetaValue(const T &v)
00040         : m_value(v)
00041         {
00042         }
00043     explicit MetaValue(const value_t &v);
00044     explicit MetaValue(const Internals::IFDEntry::Ref & e);
00045 
00046     uint32_t getInteger() const
00047         throw(Internals::BadTypeException);
00048     std::string getString() const
00049         throw(Internals::BadTypeException);
00050     
00051 private:
00052     template<typename T> T get() const
00053         throw(Internals::BadTypeException);
00054 
00055     value_t m_value;
00056 };
00057 
00058 
00059 }
00060 
00061 /*
00062   Local Variables:
00063   mode:c++
00064   c-file-style:"stroustrup"
00065   c-file-offsets:((innamespace . 0))
00066   indent-tabs-mode:nil
00067   fill-column:80
00068   End:
00069 */
00070 
00071 #endif
Generated on Thu Jul 29 20:43:09 2010 for libopenraw by  doxygen 1.6.3