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/*
//
// Copyright 1997-2009 Torsten Rohlfing
//
// Copyright 2004-2012 SRI International
//
// This file is part of the Computational Morphometry Toolkit.
//
// http://www.nitrc.org/projects/cmtk/
//
// The Computational Morphometry Toolkit is free software: you can
// redistribute it and/or modify it under the terms of the GNU General Public
// License as published by the Free Software Foundation, either version 3 of
// the License, or (at your option) any later version.
//
// The Computational Morphometry Toolkit 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License along
// with the Computational Morphometry Toolkit. If not, see
// <http://www.gnu.org/licenses/>.
//
// $Revision: 5436 $
//
// $LastChangedDate: 2018-12-10 19:01:20 -0800 (Mon, 10 Dec 2018) $
//
// $LastChangedBy: torstenrohlfing $
//
*/
#ifndef __cmtkMetaInformationObject_h_included_
#define __cmtkMetaInformationObject_h_included_
#include <map>
#include <string>
#include <mxml.h>
namespace
cmtk
{
const char* const META_FS_PATH = "FILESYSTEM_PATH";
const char* const META_FILEFORMAT_ORIGINAL = "FILEFORMAT_ORIGINAL";
const char* const META_SPACE = "SPACE";
const char* const META_SPACE_ORIGINAL = "SPACE_ORIGINAL";
const char* const META_SPACE_UNITS_STRING = "SPACE_UNITS_STRING";
const char* const META_EXTERNAL_SPACE_ID = "SPACE_ID_EXTERNAL";
const char* const META_IMAGE_ORIENTATION = "IMAGE_ORIENTATION";
const char* const META_IMAGE_ORIENTATION_ORIGINAL = "IMAGE_ORIENTATION_ORIGINAL";
const char* const META_IMAGE_DESCRIPTION = "IMAGE_DESCRIPTION";
const char* const META_IMAGE_DIRECTION_VECTORS = "IMAGE_DIRECTION_VECTORS";
// Slice order (ascending/descending, sequential/interleaved)
const char* const META_IMAGE_SLICEORDER = "IMAGE_SLICEORDER";
const char* const META_IMAGE_SLICEORDER_SI = "SEQ-INC";
const char* const META_IMAGE_SLICEORDER_SD = "SEQ-DEC";
const char* const META_IMAGE_SLICEORDER_AI = "ALT-INC";
const char* const META_IMAGE_SLICEORDER_AD = "ALT-DEC";
const char* const META_IMAGE_SLICEORDER_AI2 = "ALT-INC2";
const char* const META_IMAGE_SLICEORDER_AD2 = "ALT-DEC2";
// Slice time (duration for one slice; this should be TR/nSlices)
const char* const META_IMAGE_SLICEDURATION = "IMAGE_SLICEDURATION";
// Phase encode direction within slice - this should be either "COL" (y) or "ROW" (x), as delivered by DICOM tag InPlanePhaseEncodingDirection
const char* const META_IMAGE_SLICE_PEDIRECTION = "IMAGE_SLICE_PEDIRECTION";
const char* const META_XFORM_FIXED_IMAGE_PATH = "XFORM_FIXED_IMAGE_PATH";
const char* const META_XFORM_MOVING_IMAGE_PATH = "XFORM_MOVING_IMAGE_PATH";
/** \addtogroup Base */
//@{
/// Meta-information associated with library objects.
class MetaInformationObject
{
public:
/// This class.
typedef MetaInformationObject Self;
/// Default constructor: do nothing.
MetaInformationObject() : m_XML( NULL ) {}
/// Copy constructor: copy meta information when copying higher-level objects.
MetaInformationObject( const MetaInformationObject& other )
: m_MetaInformation( other.m_MetaInformation ),
m_XML( NULL )
{}
/// Virtual destructor template.
virtual ~MetaInformationObject()
{
if ( this->m_XML )
{
mxmlDelete( this->m_XML );
}
}
/// Check whether a key exists.
bool MetaKeyExists( const std::string& key ) const
{
return this->m_MetaInformation.find( key ) != this->m_MetaInformation.end();
}
/// Return a meta info value.
const std::string& GetMetaInfo( const std::string& key, const std::string& defaultVal = "" /*!< This string is returned if the key is not found.*/ ) const;
/// Set a meta info value.
void SetMetaInfo( const std::string& key, const std::string& value );
/** Copy a meta key/value pair from another meta information object.
* If the key does not exist in the source object, it will not be created in this
* object either.
*/
void CopyMetaInfo( const Self& other, const std::string& key );
/** Copy all meta key/value pairs from another meta information object.
*/
void CopyMetaInfo( const Self& other )
{
this->m_MetaInformation = other.m_MetaInformation;
}
/// Check if object has XML data.
bool HasXML() const
{
return this->m_XML != NULL;
}
/// Set XML data (delete existing data, if any).
void SetXML( mxml_node_t *const xml )
{
if ( this->m_XML )
{
mxmlDelete( this->m_XML );
}
this->m_XML = xml;
}
/// Get XML data (or NULL, if no XML data exists).
const mxml_node_t* XML( const char* path = NULL /*!< Optional path to the requested element in the XML tree; return root if this is NULL */ ) const
{
if ( (path != NULL) && (this->m_XML != NULL) )
{
return mxmlFindPath( this->m_XML, path );
}
else
{
return this->m_XML;
}
}
private:
/// The map type used for representation of the key/value map.
typedef std::map<std::string,std::string> KeyValueMapType;
/// The actual table of meta data: maps keys to values.
Self::KeyValueMapType m_MetaInformation;
/// Optional xml sidecar file contents.
mxml_node_t* m_XML;
};
//@}
} // namespace cmtk
#endif
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