bool ossim_hdf5::getGroupAttributeValue( H5::H5File* file,
const std::string& group,
const std::string& key,
std::string& value )
{
static const char MODULE[] = "ossim_hdf5::getGroupAttributeValue";
bool result = false;
if ( file )
{
try // HDF5 library throws exceptions so wrap with try{}catch...
{
// Open the root group:
H5::Group* h5Group = new H5::Group( file->openGroup( group ) );
// Lookw for key:
H5::Attribute attr = h5Group->openAttribute( key );
std::string name = attr.getName();
H5::DataType type = attr.getDataType();
H5T_class_t typeClass = attr.getTypeClass();
if ( ( name == key ) && ( typeClass == H5T_STRING ) )
{
attr.read( type, value );
result = true;
}
// Cleanup:
attr.close();
h5Group->close();
delete h5Group;
h5Group = 0;
}
catch( const H5::Exception& e )
{
if (traceDebug())
{
ossimNotify(ossimNotifyLevel_WARN)
<< MODULE << " WARNING: Caught exception!\n"
<< e.getDetailMsg() << std::endl;
}
}
catch( ... )
{
ossimNotify(ossimNotifyLevel_WARN)
<< MODULE << " WARNING: Caught unknown exception!" << std::endl;
}
}
return result;
} // End: ossim_hdf5::getGroupAttributeValue
bool ossim_hdf5::getDatasetAttributeValue( H5::H5File* file,
const std::string& objectName,
const std::string& key,
std::string& value )
{
static const char MODULE[] = "ossim_hdf5::getDatasetAttributeValue";
bool result = false;
if ( file )
{
try // HDF5 library throws exceptions so wrap with try{}catch...
{
// Open the dataset:
H5::DataSet dataset = file->openDataSet( objectName );
// Lookw for key:
H5::Attribute attr = dataset.openAttribute( key );
std::string name = attr.getName();
H5::DataType type = attr.getDataType();
H5T_class_t typeClass = attr.getTypeClass();
if ( ( name == key ) && ( typeClass == H5T_STRING ) )
{
attr.read( type, value );
result = true;
}
// Cleanup:
attr.close();
dataset.close();
}
catch( const H5::Exception& e )
{
ossimNotify(ossimNotifyLevel_WARN)
<< MODULE << " WARNING: Caught exception!\n"
<< e.getDetailMsg() << std::endl;
}
catch( ... )
{
ossimNotify(ossimNotifyLevel_WARN)
<< MODULE << " WARNING: Caught unknown exception!" << std::endl;
}
}
return result;
} // End: ossim_hdf5::getDatasetAttributeValue
void ossim_hdf5::printAttribute( const H5::Attribute& attr,
const std::string& prefix,
std::ostream& out )
{
std::string name = attr.getName();
H5::DataType type = attr.getDataType();
H5T_class_t typeClass = attr.getTypeClass();
size_t size = type.getSize();
std::string value; // Initialized below.
if ( ( typeClass == H5T_INTEGER ) || ( typeClass == H5T_FLOAT ) )
{
H5::IntType intType = attr.getIntType();
ossimScalarType scalar = ossim_hdf5::getScalarType( intType.getId() );
ossimByteOrder order = ossim_hdf5::getByteOrder( &attr );
ossimEndian* endian = 0;
if ( ( size > 1 ) && ( order != ossim::byteOrder() ) )
{
endian = new ossimEndian(); // If set used as flag to byte swap.
}
if ( typeClass == H5T_INTEGER )
{
switch ( scalar )
{
case OSSIM_UINT8:
{
if ( size == 1 )
{
ossim_uint8 i;
attr.read( type, (void*)&i );
value = ossimString::toString( ossim_int32(i) ).string();
}
break;
}
case OSSIM_SINT8:
{
if ( size == 1 )
{
ossim_sint8 i;
attr.read( type, (void*)&i );
value = ossimString::toString( ossim_int32(i) ).string();
}
break;
}
case OSSIM_UINT16:
{
if ( size == 2 )
{
ossim_uint16 i;
attr.read( type, (void*)&i );
if ( endian )
{
endian->swap( i );
}
value = ossimString::toString( i ).string();
}
break;
}
case OSSIM_SINT16:
{
if ( size == 2 )
{
ossim_sint16 i;
attr.read( type, (void*)&i );
if ( endian )
{
endian->swap( i );
}
value = ossimString::toString( i ).string();
}
break;
}
case OSSIM_UINT32:
{
if ( size == 4 )
{
ossim_uint32 i;
attr.read( type, (void*)&i );
if ( endian )
{
endian->swap( i );
}
value = ossimString::toString( i ).string();
}
break;
}
case OSSIM_SINT32:
{
if ( size == 4 )
{
ossim_sint32 i;
attr.read( type, (void*)&i );
if ( endian )
{
endian->swap( i );
}
value = ossimString::toString( i ).string();
}
break;
}
case OSSIM_UINT64:
{
if ( size == 8 )
{
ossim_uint64 i;
attr.read( type, (void*)&i );
if ( endian )
{
endian->swap( i );
}
value = ossimString::toString( i ).string();
}
break;
}
case OSSIM_SINT64:
{
if ( size == 8 )
{
ossim_sint32 i;
attr.read( type, (void*)&i );
if ( endian )
{
endian->swap( i );
}
value = ossimString::toString( i ).string();
}
break;
}
default:
break;
}
}
else if ( typeClass == H5T_FLOAT )
{
if ( scalar == OSSIM_FLOAT32 )
{
if ( size == 4 )
{
ossim_float32 f;
attr.read( type, (void*)&f );
if ( endian )
{
endian->swap( f );
}
value = ossimString::toString( f ).string();
}
}
if ( scalar == OSSIM_FLOAT64 )
{
if ( size == 8 )
{
ossim_float64 f;
attr.read( type, (void*)&f );
if ( endian )
{
endian->swap( f );
}
value = ossimString::toString( f ).string();
}
}
}
if ( endian )
{
delete endian;
endian = 0;
}
}
else if ( typeClass == H5T_STRING )
{
attr.read( type, value );
}
else
{
ossimNotify(ossimNotifyLevel_DEBUG)
<< "ossimH5Util::printAttribute WARN: Unhandled type class: " << typeClass
<< std::endl;
}
out << prefix << "." << name << ": " << value << std::endl;
} // End: ossim_hdf5::printAttribute