mirror of
https://github.com/HDFGroup/hdf5.git
synced 2026-10-08 23:44:08 +03:00
Binh-Minh Ribler
9cd9f7f521
Purpose: Usability enhancement Description: - Added more information about the failure to all the throw's, i.e, member function name and more detail about the failure, where appropriate. Also, added exception throws for private functions, such as p_close to provide more specific details. - Added two api functions: Exception::getFuncName() and Exception::getCFuncName() to provide the name of the member function where failure occurs. - Fixed some typos, one of which caused segn. fault in some situations (resetIdComponent was accidentally called twice in a couple of places :) Platforms: arabica (sparc-sun-solaris 2.7)
127 lines
3.6 KiB
C++
127 lines
3.6 KiB
C++
#include <string>
|
|
|
|
#include "H5Include.h"
|
|
#include "H5Exception.h"
|
|
#include "H5RefCounter.h"
|
|
#include "H5IdComponent.h"
|
|
#include "H5Idtemplates.h"
|
|
#include "H5PropList.h"
|
|
#include "H5Object.h"
|
|
#include "H5AbstractDs.h"
|
|
#include "H5Attribute.h"
|
|
#include "H5DataType.h"
|
|
#include "H5DataSpace.h"
|
|
|
|
#ifndef H5_NO_NAMESPACE
|
|
namespace H5 {
|
|
#endif
|
|
|
|
// Copy constructor: makes a copy of the original object; simply invokes
|
|
// the base class copy constructor.
|
|
Attribute::Attribute( const Attribute& original ) : AbstractDs( original ) {}
|
|
|
|
// Creates a copy of an existing attribute using an id
|
|
Attribute::Attribute( const hid_t attr_id ) : AbstractDs( attr_id ) {}
|
|
|
|
// Writes data to this attribute.
|
|
void Attribute::write( const DataType& mem_type, void *buf ) const
|
|
{
|
|
herr_t ret_value = H5Awrite( id, mem_type.getId(), buf );
|
|
if( ret_value < 0 )
|
|
{
|
|
throw AttributeIException("Attribute::write", "H5Awrite failed");
|
|
}
|
|
}
|
|
|
|
// Reads data from this attribute.
|
|
void Attribute::read( const DataType& mem_type, void *buf ) const
|
|
{
|
|
herr_t ret_value = H5Aread( id, mem_type.getId(), buf );
|
|
if( ret_value < 0 )
|
|
{
|
|
throw AttributeIException("Attribute::read", "H5Aread failed");
|
|
}
|
|
}
|
|
|
|
// Gets a copy of the dataspace for this attribute.
|
|
DataSpace Attribute::getSpace() const
|
|
{
|
|
// Calls C function H5Aget_space to get the id of the dataspace
|
|
hid_t dataspace_id = H5Aget_space( id );
|
|
|
|
// If the dataspace id is valid, create and return the DataSpace object
|
|
if( dataspace_id > 0 )
|
|
{
|
|
DataSpace dataspace( dataspace_id );
|
|
return( dataspace );
|
|
}
|
|
else
|
|
{
|
|
throw AttributeIException("Attribute::getSpace", "H5Aget_space failed");
|
|
}
|
|
}
|
|
|
|
// This private member function calls the C API to get the generic datatype
|
|
// of the datatype that is used by this attribute. This function is used
|
|
// by the overloaded functions getDataType defined in AbstractDs for the
|
|
// generic datatype and specific sub-types.
|
|
hid_t Attribute::p_getType() const
|
|
{
|
|
hid_t type_id = H5Aget_type( id );
|
|
if( type_id > 0 )
|
|
return( type_id );
|
|
else
|
|
{
|
|
throw AttributeIException(NULL, "H5Aget_type failed");
|
|
}
|
|
}
|
|
|
|
// Gets the name of this attribute.
|
|
string Attribute::getName( size_t buf_size ) const
|
|
{
|
|
char* name_C = new char[buf_size+1]; // temporary C-string for C API
|
|
|
|
// Calls C routine H5Aget_name to get the name of the attribute
|
|
herr_t name_size = H5Aget_name( id, buf_size, name_C );
|
|
|
|
// If H5Aget_name returns a negative value, raise an exception,
|
|
if( name_size < 0 )
|
|
{
|
|
throw AttributeIException("Attribute::getName", "H5Aget_name failed");
|
|
}
|
|
// otherwise, create the string to hold the attribute name and return it
|
|
string name = string( name_C );
|
|
delete name_C;
|
|
return( name );
|
|
}
|
|
|
|
// This private function calls the C API H5Aclose to close this attribute.
|
|
// Used by the IdComponent::reset.
|
|
void Attribute::p_close() const
|
|
{
|
|
herr_t ret_value = H5Aclose( id );
|
|
if( ret_value < 0 )
|
|
{
|
|
throw AttributeIException(NULL, "H5Aclose failed");
|
|
}
|
|
}
|
|
|
|
// The destructor of this instance calls IdComponent::reset to
|
|
// reset its identifier - no longer true
|
|
// Older compilers (baldric) don't support template member functions
|
|
// and IdComponent::reset is one; so at this time, the resetId is not
|
|
// a member function so it can be template to work around that problem.
|
|
Attribute::~Attribute()
|
|
{
|
|
// The attribute id will be closed properly
|
|
try {
|
|
resetIdComponent( this ); }
|
|
catch (Exception close_error) { // thrown by p_close
|
|
throw AttributeIException("Attribute::~Attribute", close_error.getDetailMsg());
|
|
}
|
|
}
|
|
|
|
#ifndef H5_NO_NAMESPACE
|
|
} // end namespace
|
|
#endif
|