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/*
* libopenraw - metavalue.cpp
*
* Copyright (C) 2007 Hubert Figuiere
* Copyright (C) 2008 Novell, Inc.
*
* 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/>.
*/
#include "debug.h"
#include "exception.h"
#include "metavalue.h"
using namespace Debug;
namespace OpenRaw {
MetaValue::MetaValue(const MetaValue & r)
: m_value(r.m_value)
{
}
MetaValue::MetaValue(const value_t &v)
: m_value(v)
{
}
namespace {
template <class T>
MetaValue::value_t convert(const Internals::IFDEntry::Ref & e)
{
T v;
v = Internals::IFDTypeTrait<T>::get(*e, 0, false);
return MetaValue::value_t(v);
}
}
MetaValue::MetaValue(const Internals::IFDEntry::Ref & e)
{
switch(e->type()) {
case Internals::IFD::EXIF_FORMAT_BYTE:
{
m_value = convert<uint8_t>(e);
break;
}
case Internals::IFD::EXIF_FORMAT_ASCII:
{
m_value = convert<std::string>(e);
break;
}
case Internals::IFD::EXIF_FORMAT_SHORT:
{
m_value = convert<uint16_t>(e);
break;
}
case Internals::IFD::EXIF_FORMAT_LONG:
{
m_value = convert<uint32_t>(e);
break;
}
default:
Trace(DEBUG1) << "unhandled type " << e->type() << "\n";
break;
}
}
template<typename T>
inline T MetaValue::get() const
throw(Internals::BadTypeException)
{
T v;
assert(!m_value.empty());
try {
v = boost::get<T>(m_value);
}
catch(...) { //const boost::bad_any_cast &) {
throw Internals::BadTypeException();
}
return v;
}
uint32_t MetaValue::getInteger() const
throw(Internals::BadTypeException)
{
return get<uint32_t>();
}
std::string MetaValue::getString() const
throw(Internals::BadTypeException)
{
return get<std::string>();
}
}
/*
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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