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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Copyright by the Board of Trustees of the University of Illinois. *
* All rights reserved. *
* *
* This file is part of HDF5. The full HDF5 copyright notice, including *
* terms governing use, modification, and redistribution, is contained in *
* the files COPYING and Copyright.html. COPYING can be found at the root *
* of the source code distribution tree; Copyright.html can be found at the *
* root level of an installed copy of the electronic HDF5 document set and *
* is linked from the top-level documents page. It can also be found at *
* http://hdf.ncsa.uiuc.edu/HDF5/doc/Copyright.html. If you do not have *
* access to either file, you may request a copy from hdfhelp@ncsa.uiuc.edu. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
#ifdef OLD_HEADER_FILENAME
#include <iostream.h>
#else
#include <iostream>
#endif
#include <string>
#include "H5Include.h"
#include "H5Exception.h"
#include "H5IdComponent.h"
#include "H5DataSpace.h"
#ifndef H5_NO_NAMESPACE
namespace H5 {
#ifndef H5_NO_STD
using std::cerr;
using std::endl;
#endif // H5_NO_STD
#endif
//--------------------------------------------------------------------------
///\brief Constant for default dataspace.
//--------------------------------------------------------------------------
const DataSpace DataSpace::ALL( H5S_ALL );
//--------------------------------------------------------------------------
// Function: DataSpace constructor
///\brief Creates a new dataspace given a dataspace type.
///\param type - IN: Type of the dataspace to be created, which
/// currently can be either \c H5S_SCALAR or \c H5S_SIMPLE;
/// default to \c H5S_SCALAR.
///\exception H5::DataSpaceIException
// Programmer Binh-Minh Ribler - 2000
//--------------------------------------------------------------------------
DataSpace::DataSpace( H5S_class_t type ) : IdComponent(0)
{
id = H5Screate( type );
if( id < 0 )
{
throw DataSpaceIException("DataSpace constructor", "H5Screate failed");
}
}
//--------------------------------------------------------------------------
// Function: DataSpace overloaded constructor
///\brief Creates a new simple dataspace.
///\param rank - IN: Number of dimensions of dataspace.
///\param dims - IN: An array of the size of each dimension.
///\param maxdims - IN: An array of the maximum size of each dimension.
///\exception H5::DataSpaceIException
// Programmer Binh-Minh Ribler - 2000
//--------------------------------------------------------------------------
DataSpace::DataSpace( int rank, const hsize_t * dims, const hsize_t * maxdims) : IdComponent(0)
{
id = H5Screate_simple( rank, dims, maxdims );
if( id < 0 )
{
throw DataSpaceIException("DataSpace constructor", "H5Screate_simple failed");
}
}
//--------------------------------------------------------------------------
// Function: DataSpace overloaded constructor
///\brief Creates a DataSpace object using the id of an existing
/// dataspace.
///\param existing_id - IN: Id of an existing dataspace
///\exception H5::DataSpaceIException
// Programmer Binh-Minh Ribler - 2000
//--------------------------------------------------------------------------
DataSpace::DataSpace(const hid_t existing_id) : IdComponent(existing_id) {}
//--------------------------------------------------------------------------
// Function: DataSpace copy constructor
///\brief Copy constructor: makes a copy of the original DataSpace object.
///\param original - IN: DataSpace object to copy
// Programmer Binh-Minh Ribler - 2000
//--------------------------------------------------------------------------
DataSpace::DataSpace( const DataSpace& original ) : IdComponent( original ) {}
//--------------------------------------------------------------------------
// Function: DataSpace::copy
///\brief Makes a copy of an existing dataspace.
///\param like_space - IN: Dataspace to be copied
///\exception H5::DataSpaceIException
// Programmer Binh-Minh Ribler - 2000
// Modification
// - Replaced resetIdComponent() with decRefCount() to use C
// library ID reference counting mechanism - BMR, Feb 20, 2005
// - Replaced decRefCount with close() to let the C library
// handle the reference counting - BMR, Jun 1, 2006
//--------------------------------------------------------------------------
void DataSpace::copy( const DataSpace& like_space )
{
// If this object has an hdf5 valid id, close it
if( id != H5S_ALL ) {
try {
close();
}
catch (Exception close_error) {
throw DataSpaceIException("DataSpace::copy", close_error.getDetailMsg());
}
} // end if
// call C routine to copy the dataspace
id = H5Scopy( like_space.getId() );
if( id < 0 )
throw DataSpaceIException("DataSpace::copy", "H5Scopy failed");
}
//--------------------------------------------------------------------------
// Function: DataSpace::operator=
///\brief Assignment operator.
///\param rhs - IN: Reference to the existing dataspace
///\return Reference to DataSpace instance
///\exception H5::DataSpaceIException
// Description
// Makes a copy of the type on the right hand side and stores
// the new id in the left hand side object.
// Programmer Binh-Minh Ribler - 2000
//--------------------------------------------------------------------------
DataSpace& DataSpace::operator=( const DataSpace& rhs )
{
if (this != &rhs)
copy(rhs);
return(*this);
}
//--------------------------------------------------------------------------
// Function: DataSpace::isSimple
///\brief Determines whether this dataspace is a simple dataspace.
///\return \c true if the dataspace is a simple dataspace, and \c false,
/// otherwise
///\exception H5::DataSpaceIException
// Programmer Binh-Minh Ribler - 2000
//--------------------------------------------------------------------------
bool DataSpace::isSimple () const
{
htri_t simple = H5Sis_simple( id );
if( simple > 0 )
return true;
else if( simple == 0 )
return false;
else
{
throw DataSpaceIException("DataSpace::isSimple",
"H5Sis_simple returns negative value");
}
}
//--------------------------------------------------------------------------
// Function: DataSpace::offsetSimple
///\brief Sets the offset of this simple dataspace.
///\param offset - IN: Offset to position the selection at
///\exception H5::DataSpaceIException
///\par Description
/// This function creates an offset for the selection within
/// an extent, allowing the same shaped selection to be moved
/// to different locations within a dataspace without requiring
/// it to be re-defined.
// Programmer Binh-Minh Ribler - 2000
//--------------------------------------------------------------------------
void DataSpace::offsetSimple ( const hssize_t* offset ) const
{
herr_t ret_value = H5Soffset_simple( id, offset );
if( ret_value < 0 )
{
throw DataSpaceIException("DataSpace::offsetSimple", "H5Soffset_simple failed");
}
}
//--------------------------------------------------------------------------
// Function: DataSpace::getSimpleExtentDims
///\brief Retrieves dataspace dimension size and maximum size.
///\param dims - IN: Name of the new member
///\param maxdims - IN: Pointer to the value of the new member
///\return Number of dimensions, the same value as returned by
/// \c DataSpace::getSimpleExtentNdims()
///\exception H5::DataSpaceIException
// Programmer Binh-Minh Ribler - 2000
//--------------------------------------------------------------------------
int DataSpace::getSimpleExtentDims ( hsize_t *dims, hsize_t *maxdims ) const
{
int ndims = H5Sget_simple_extent_dims( id, dims, maxdims );
if( ndims < 0 )
{
throw DataSpaceIException("DataSpace::getSimpleExtentDims",
"H5Sget_simple_extent_dims returns negative number of dimensions");
}
return( ndims );
}
//--------------------------------------------------------------------------
// Function: DataSpace::getSimpleExtentNdims
///\brief Returns the dimensionality of a dataspace.
///\return Number of dimensions
///\exception H5::DataSpaceIException
// Programmer Binh-Minh Ribler - 2000
//--------------------------------------------------------------------------
int DataSpace::getSimpleExtentNdims () const
{
int ndims = H5Sget_simple_extent_ndims( id );
if( ndims < 0 )
{
throw DataSpaceIException("DataSpace::getSimpleExtentNdims",
"H5Sget_simple_extent_ndims returns negative value for dimensionality of the dataspace");
}
return( ndims );
}
//--------------------------------------------------------------------------
// Function: DataSpace::getSimpleExtentNpoints
///\brief Returns the number of elements in a dataspace.
///\return Number of elements
///\exception H5::DataSpaceIException
// Modification
// 12/05/00: due to C API change
// return type hssize_t vs. hsize_t
// num_elements = -1 when failure occurs vs. 0
// Programmer Binh-Minh Ribler - 2000
//--------------------------------------------------------------------------
hssize_t DataSpace::getSimpleExtentNpoints () const
{
hssize_t num_elements = H5Sget_simple_extent_npoints( id );
if( num_elements > -1 )
return( num_elements );
else
{
throw DataSpaceIException("DataSpace::getSimpleExtentNpoints",
"H5Sget_simple_extent_npoints returns negative value for the number of elements in the dataspace");
}
}
//--------------------------------------------------------------------------
// Function: DataSpace::getSimpleExtentType
///\brief Returns the current class of a dataspace.
///\return Class of the dataspace
///\exception H5::DataSpaceIException
// Programmer Binh-Minh Ribler - 2000
//--------------------------------------------------------------------------
H5S_class_t DataSpace::getSimpleExtentType () const
{
H5S_class_t class_name = H5Sget_simple_extent_type( id );
if( class_name == H5S_NO_CLASS )
{
throw DataSpaceIException("DataSpace::getSimpleExtentType",
"H5Sget_simple_extent_type returns H5S_NO_CLASS");
}
return( class_name );
}
//--------------------------------------------------------------------------
// Function: DataSpace::extentCopy
///\brief Copies the extent of a dataspace.
///\param dest_space - IN: Dataspace to copy from
///\exception H5::DataSpaceIException
// Programmer Binh-Minh Ribler - 2000
//--------------------------------------------------------------------------
void DataSpace::extentCopy ( DataSpace& dest_space ) const
{
hid_t dest_space_id = dest_space.getId();
herr_t ret_value = H5Sextent_copy( dest_space_id, id );
if( ret_value < 0 )
{
throw DataSpaceIException("DataSpace::extentCopy", "H5Sextent_copy failed");
}
}
//--------------------------------------------------------------------------
// Function: DataSpace::setExtentSimple
///\brief Sets or resets the size of an existing dataspace.
///\param rank - IN: Rank of the dataspace
///\param current_size - IN: Array containing current size of dataspace
///\param maximum_size - IN: Array containing maximum size of dataspace
///\exception H5::DataSpaceIException
// Programmer Binh-Minh Ribler - 2000
//--------------------------------------------------------------------------
void DataSpace::setExtentSimple( int rank, const hsize_t *current_size, const hsize_t *maximum_size ) const
{
herr_t ret_value;
ret_value = H5Sset_extent_simple( id, rank, current_size, maximum_size );
if( ret_value < 0 )
{
throw DataSpaceIException("DataSpace::setExtentSimple", "H5Sset_extent_simple failed");
}
}
//--------------------------------------------------------------------------
// Function: DataSpace::setExtentNone
///\brief Removes the extent from a dataspace.
///
///\exception H5::DataSpaceIException
// Programmer Binh-Minh Ribler - 2000
//--------------------------------------------------------------------------
void DataSpace::setExtentNone () const
{
herr_t ret_value = H5Sset_extent_none( id );
if( ret_value < 0 )
{
throw DataSpaceIException("DataSpace::setExtentNone", "H5Sset_extent_none failed");
}
}
//--------------------------------------------------------------------------
// Function: DataSpace::getSelectNpoints
///\brief Returns the number of elements in a dataspace selection.
///\return Number of elements
///\exception H5::DataSpaceIException
// Programmer Binh-Minh Ribler - 2000
//--------------------------------------------------------------------------
hssize_t DataSpace::getSelectNpoints () const
{
hssize_t num_elements = H5Sget_select_npoints( id );
if( num_elements < 0 )
{
throw DataSpaceIException("DataSpace::getSelectNpoints",
"H5Sget_select_npoints returns negative value for number of elements in the dataspace selection");
}
return( num_elements );
}
//--------------------------------------------------------------------------
// Function: DataSpace::getSelectHyperNblocks
///\brief Returns number of hyperslab blocks.
///\return Number of hyperslab blocks
///\exception H5::DataSpaceIException
// Programmer Binh-Minh Ribler - 2000
//--------------------------------------------------------------------------
hssize_t DataSpace::getSelectHyperNblocks () const
{
hssize_t num_blocks = H5Sget_select_hyper_nblocks( id );
if( num_blocks < 0 )
{
throw DataSpaceIException("DataSpace::getSelectHyperNblocks",
"H5Sget_select_hyper_nblocks returns negative value for the number of hyperslab blocks");
}
return( num_blocks );
}
//--------------------------------------------------------------------------
// Function: DataSpace::getSelectHyperBlocklist
///\brief Gets the list of hyperslab blocks currently selected
///\param startblock - IN: Hyperslab block to start with
///\param numblocks - IN: Number of hyperslab blocks to get
///\param buf - IN: List of hyperslab blocks selected
///\exception H5::DataSpaceIException
// Programmer Binh-Minh Ribler - 2000
//--------------------------------------------------------------------------
void DataSpace::getSelectHyperBlocklist( hsize_t startblock, hsize_t numblocks, hsize_t *buf ) const
{
herr_t ret_value;
ret_value = H5Sget_select_hyper_blocklist( id, startblock, numblocks, buf );
if( ret_value < 0 )
{
throw DataSpaceIException("DataSpace::getSelectHyperBlocklist",
"H5Sget_select_hyper_blocklist failed");
}
}
//--------------------------------------------------------------------------
// Function: DataSpace::getSelectElemNpoints
///\brief Returns the number of element points in the current selection.
///\return Number of element points
///\exception H5::DataSpaceIException
// Programmer Binh-Minh Ribler - 2000
//--------------------------------------------------------------------------
hssize_t DataSpace::getSelectElemNpoints () const
{
hssize_t num_points = H5Sget_select_elem_npoints( id );
if( num_points < 0 )
{
throw DataSpaceIException("DataSpace::getSelectElemNpoints",
"H5Sget_select_elem_npoints failed");
}
return( num_points );
}
//--------------------------------------------------------------------------
// Function: DataSpace::getSelectElemPointlist
///\brief Gets the list of element points currently selected
///\param startpoint - IN: Element point to start with
///\param numpoints - IN: Number of element points to get
///\param buf - IN: List of element points selected
///\exception H5::DataSpaceIException
///\par Description
/// For more information, please refer to the C layer Reference
/// Manual at:
/// http://hdf.ncsa.uiuc.edu/HDF5/doc/RM_H5S.html#Dataspace-SelectElemPointList
// Programmer Binh-Minh Ribler - 2000
//--------------------------------------------------------------------------
void DataSpace::getSelectElemPointlist ( hsize_t startpoint, hsize_t numpoints, hsize_t *buf ) const
{
herr_t ret_value;
ret_value = H5Sget_select_elem_pointlist( id, startpoint, numpoints, buf );
if( ret_value < 0 )
{
throw DataSpaceIException("DataSpace::getSelectElemPointlist",
"H5Sget_select_elem_pointlist failed");
}
}
//--------------------------------------------------------------------------
// Function: DataSpace::getSelectBounds
///\brief Gets the bounding box containing the current selection.
///\param start - IN: Starting coordinates of the bounding box
///\param end - IN: Ending coordinates of the bounding box, i.e.,
/// the coordinates of the diagonally opposite corner
///\exception H5::DataSpaceIException
///\par Description
/// For more information, please refer to the C layer Reference
/// Manual at:
/// http://hdf.ncsa.uiuc.edu/HDF5/doc/RM_H5S.html#Dataspace-SelectBounds
// Programmer Binh-Minh Ribler - 2000
//--------------------------------------------------------------------------
void DataSpace::getSelectBounds ( hsize_t* start, hsize_t* end ) const
{
herr_t ret_value = H5Sget_select_bounds( id, start, end );
if( ret_value < 0 )
{
throw DataSpaceIException("DataSpace::getSelectBounds",
"H5Sget_select_bounds failed");
}
}
//--------------------------------------------------------------------------
// Function: DataSpace::H5Sselect_elements
///\brief Selects array elements to be included in the selection for
/// this dataspace.
///\param op - IN: Operator specifying how the new selection is to be
/// combined with the existing selection for the dataspace
///\param num_elements - IN: Number of elements to be selected
///\param coord - IN: A 2-dimensional array of 0-based values
/// specifying the coordinates of the elements being selected
///\exception H5::DataSpaceIException
///\par Description
/// For more information, please refer to the C layer Reference
/// Manual at:
/// http://hdf.ncsa.uiuc.edu/HDF5/doc/RM_H5S.html#Dataspace-SelectElements
// Programmer Binh-Minh Ribler - 2000
//--------------------------------------------------------------------------
void DataSpace::selectElements ( H5S_seloper_t op, const size_t num_elements, const hsize_t *coord[ ] ) const
{
herr_t ret_value;
ret_value = H5Sselect_elements( id, op, num_elements, coord );
if( ret_value < 0 )
{
throw DataSpaceIException("DataSpace::selectElements",
"H5Sselect_elements failed");
}
}
//--------------------------------------------------------------------------
// Function: DataSpace::selectAll
///\brief Selects the entire dataspace.
///
///\exception H5::DataSpaceIException
// Programmer Binh-Minh Ribler - 2000
//--------------------------------------------------------------------------
void DataSpace::selectAll () const
{
herr_t ret_value = H5Sselect_all( id );
if( ret_value < 0 )
{
throw DataSpaceIException("DataSpace::selectAll", "H5Sselect_all failed");
}
}
//--------------------------------------------------------------------------
// Function: DataSpace::selectNone
///\brief Resets the selection region to include no elements.
///
///\exception H5::DataSpaceIException
// Programmer Binh-Minh Ribler - 2000
//--------------------------------------------------------------------------
void DataSpace::selectNone () const
{
herr_t ret_value = H5Sselect_none( id );
if( ret_value < 0 )
{
throw DataSpaceIException("DataSpace::selectNone",
"H5Sselect_none failed");
}
}
//--------------------------------------------------------------------------
// Function: DataSpace::selectValid
///\brief Verifies that the selection is within the extent of the
/// dataspace.
///\return \c true if the selection is within the extent of the
/// dataspace, and \c false, otherwise
///\exception H5::DataSpaceIException
// Programmer Binh-Minh Ribler - 2000
//--------------------------------------------------------------------------
bool DataSpace::selectValid () const
{
htri_t ret_value = H5Sselect_valid( id );
if( ret_value > 0 )
return true;
else if( ret_value == 0 )
return false;
else
{
throw DataSpaceIException("DataSpace::selectValid",
"H5Sselect_valid returns negative value");
}
}
//--------------------------------------------------------------------------
// Function: DataSpace::selectHyperslab
///\brief Selects a hyperslab region to add to the current selected region.
///\param op - IN: Operation to perform on current selection
///\param count - IN: Number of blocks included in the hyperslab
///\param start - IN: Offset of the start of hyperslab
///\param stride - IN: Hyperslab stride - default to \c NULL
///\param block - IN: Size of block in the hyperslab - default to \c NULL
///\exception H5::DataSpaceIException
///\par Description
/// For more information, please refer to the C layer Reference
/// Manual at:
/// http://hdf.ncsa.uiuc.edu/HDF5/doc/RM_H5S.html#Dataspace-SelectHyperslab
// Programmer Binh-Minh Ribler - 2000
//--------------------------------------------------------------------------
void DataSpace::selectHyperslab( H5S_seloper_t op, const hsize_t *count, const hsize_t *start, const hsize_t *stride, const hsize_t *block ) const
{
herr_t ret_value;
ret_value = H5Sselect_hyperslab( id, op, start, stride, count, block );
if( ret_value < 0 )
{
throw DataSpaceIException("DataSpace::selectHyperslab",
"H5Sselect_hyperslab failed");
}
}
//--------------------------------------------------------------------------
// Function: DataSpace::close
///\brief Closes this dataspace.
///
///\exception H5::DataSpaceIException
// Programmer Binh-Minh Ribler - Mar 9, 2005
//--------------------------------------------------------------------------
void DataSpace::close()
{
// check if id is a valid hdf5 object id before trying to close it
if (p_valid_id(id))
{
herr_t ret_value = H5Sclose(id);
if( ret_value < 0 )
{
throw DataSpaceIException("DataSpace::close", "H5Sclose failed");
}
// reset the id because the dataspace that it represents is now closed
id = 0;
}
}
//--------------------------------------------------------------------------
// Function: DataSpace destructor
///\brief Properly terminates access to this dataspace.
// Programmer Binh-Minh Ribler - 2000
// Modification
// - Replaced resetIdComponent() with decRefCount() to use C
// library ID reference counting mechanism - BMR, Feb 20, 2005
// - Replaced decRefCount with close() to let the C library
// handle the reference counting - BMR, Jun 1, 2006
//--------------------------------------------------------------------------
DataSpace::~DataSpace()
{
try {
close();
}
catch (Exception close_error) {
cerr << "DataSpace::~DataSpace - " << close_error.getDetailMsg() << endl;
}
}
#ifndef H5_NO_NAMESPACE
} // end namespace
#endif
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