mirror of
https://github.com/HDFGroup/hdf5.git
synced 2026-10-08 23:44:08 +03:00
Binh-Minh Ribler
a59795b546
Code cleanup
Description:
Changed prototype for the buffer in Attribute::write from "void *"
to "const void *"
Platforms tested:
FreeBSD 4.4 (hawkwind)
SunOS 5.7 (arabica)
Linux 6.2 (eirene)
127 lines
3.6 KiB
C++
127 lines
3.6 KiB
C++
#include <string>
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#include "H5Include.h"
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#include "H5Exception.h"
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#include "H5RefCounter.h"
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#include "H5IdComponent.h"
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#include "H5Idtemplates.h"
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#include "H5PropList.h"
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#include "H5Object.h"
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#include "H5AbstractDs.h"
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#include "H5Attribute.h"
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#include "H5DataType.h"
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#include "H5DataSpace.h"
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#ifndef H5_NO_NAMESPACE
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namespace H5 {
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#endif
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// Copy constructor: makes a copy of the original object; simply invokes
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// the base class copy constructor.
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Attribute::Attribute( const Attribute& original ) : AbstractDs( original ) {}
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// Creates a copy of an existing attribute using an id
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Attribute::Attribute( const hid_t attr_id ) : AbstractDs( attr_id ) {}
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// Writes data to this attribute.
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void Attribute::write( const DataType& mem_type, const void *buf ) const
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{
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herr_t ret_value = H5Awrite( id, mem_type.getId(), buf );
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if( ret_value < 0 )
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{
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throw AttributeIException("Attribute::write", "H5Awrite failed");
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}
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}
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// Reads data from this attribute.
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void Attribute::read( const DataType& mem_type, void *buf ) const
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{
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herr_t ret_value = H5Aread( id, mem_type.getId(), buf );
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if( ret_value < 0 )
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{
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throw AttributeIException("Attribute::read", "H5Aread failed");
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}
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}
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// Gets a copy of the dataspace for this attribute.
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DataSpace Attribute::getSpace() const
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{
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// Calls C function H5Aget_space to get the id of the dataspace
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hid_t dataspace_id = H5Aget_space( id );
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// If the dataspace id is valid, create and return the DataSpace object
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if( dataspace_id > 0 )
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{
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DataSpace dataspace( dataspace_id );
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return( dataspace );
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}
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else
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{
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throw AttributeIException("Attribute::getSpace", "H5Aget_space failed");
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}
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}
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// This private member function calls the C API to get the generic datatype
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// of the datatype that is used by this attribute. This function is used
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// by the overloaded functions getDataType defined in AbstractDs for the
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// generic datatype and specific sub-types.
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hid_t Attribute::p_getType() const
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{
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hid_t type_id = H5Aget_type( id );
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if( type_id > 0 )
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return( type_id );
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else
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{
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throw AttributeIException(NULL, "H5Aget_type failed");
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}
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}
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// Gets the name of this attribute.
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string Attribute::getName( size_t buf_size ) const
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{
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char* name_C = new char[buf_size+1]; // temporary C-string for C API
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// Calls C routine H5Aget_name to get the name of the attribute
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herr_t name_size = H5Aget_name( id, buf_size, name_C );
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// If H5Aget_name returns a negative value, raise an exception,
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if( name_size < 0 )
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{
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throw AttributeIException("Attribute::getName", "H5Aget_name failed");
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}
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// otherwise, create the string to hold the attribute name and return it
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string name = string( name_C );
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delete name_C;
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return( name );
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}
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// This private function calls the C API H5Aclose to close this attribute.
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// Used by the IdComponent::reset.
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void Attribute::p_close() const
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{
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herr_t ret_value = H5Aclose( id );
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if( ret_value < 0 )
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{
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throw AttributeIException(NULL, "H5Aclose failed");
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}
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}
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// The destructor of this instance calls IdComponent::reset to
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// reset its identifier - no longer true
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// Older compilers (baldric) don't support template member functions
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// and IdComponent::reset is one; so at this time, the resetId is not
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// a member function so it can be template to work around that problem.
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Attribute::~Attribute()
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{
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// The attribute id will be closed properly
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try {
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resetIdComponent( this ); }
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catch (Exception close_error) { // thrown by p_close
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throw AttributeIException("Attribute::~Attribute", close_error.getDetailMsg());
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}
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}
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#ifndef H5_NO_NAMESPACE
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} // end namespace
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#endif
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