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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Copyright by The HDF Group. *
* 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 COPYING file, which can be found at the root of the source code *
* distribution tree, or in https://www.hdfgroup.org/licenses. *
* If you do not have access to either file, you may request a copy from *
* help@hdfgroup.org. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
#ifdef OLD_HEADER_FILENAME
#include <iostream.h>
#else
#include <iostream>
#endif
#include <string>
#include "H5private.h" // for HDmemset
#include "H5Include.h"
#include "H5Exception.h"
#include "H5IdComponent.h"
#include "H5PropList.h"
#include "H5DataSpace.h"
#include "H5StrcreatProp.h"
#include "H5LcreatProp.h"
#include "H5AbstractDs.h"
#include "H5LaccProp.h"
#include "H5Location.h"
#include "H5Attribute.h"
#include "H5Object.h"
#include "H5DataType.h"
namespace H5 {
#ifndef DOXYGEN_SHOULD_SKIP_THIS
// userAttrOpWrpr simply interfaces between the user's function and the
// C library function H5Aiterate2; used to resolve the different prototype
// problem. May be moved to Iterator later.
/* extern "C" herr_t userAttrOpWrpr(hid_t loc_id, const char *attr_name,
const H5A_info_t *ainfo, void *op_data)
{
H5std_string s_attr_name = H5std_string(attr_name);
#ifdef NO_STATIC_CAST
UserData4Aiterate* myData = (UserData4Aiterate *) op_data;
#else
UserData4Aiterate* myData = static_cast <UserData4Aiterate *> (op_data);
#endif
myData->op(*myData->location, s_attr_name, myData->opData);
return 0;
}
*/
//--------------------------------------------------------------------------
// Function: H5Object default constructor (protected)
// Programmer Binh-Minh Ribler - 2000
//--------------------------------------------------------------------------
H5Object::H5Object() : H5Location()
{
}
//--------------------------------------------------------------------------
// Function: f_Attribute_setId - friend
// Purpose: This function is friend to class H5::Attribute so that it
// can set Attribute::id in order to work around a problem
// described in the JIRA issue HDFFV-7947.
// Applications shouldn't need to use it.
// param attr - IN/OUT: Attribute object to be changed
// param new_id - IN: New id to set
// Programmer Binh-Minh Ribler - 2015
//--------------------------------------------------------------------------
void
f_Attribute_setId(Attribute *attr, hid_t new_id)
{
attr->p_setId(new_id);
}
/***************************************************************************
Notes for H5A wrappers
======================
May, 2017 (1.8.19)
These H5A wrappers are copied from H5Location to prevent an attribute
id being passed in to H5A APIs. The original H5A wrapper functions
in H5Location will be deprecated in future releases.
***************************************************************************/
//--------------------------------------------------------------------------
// Function: H5Object::createAttribute
///\brief Creates an attribute for a group, dataset, or named datatype.
///\param name - IN: Name of the attribute
///\param data_type - IN: Datatype for the attribute
///\param data_space - IN: Dataspace for the attribute - only simple
/// dataspaces are allowed at this time
///\param create_plist - IN: Creation property list - default to
/// PropList::DEFAULT
///\return Attribute instance
///\exception H5::AttributeIException
///\par Description
/// The attribute name specified in \a name must be unique.
/// Attempting to create an attribute with the same name as an
/// existing attribute will raise an exception, leaving the
/// pre-existing attribute intact. To overwrite an existing
/// attribute with a new attribute of the same name, first
/// delete the existing one with \c H5Object::removeAttr, then
/// recreate it with this function.
// Programmer Binh-Minh Ribler - 2000
//--------------------------------------------------------------------------
Attribute
H5Object::createAttribute(const char *name, const DataType &data_type, const DataSpace &data_space,
const PropList &create_plist) const
{
hid_t type_id = data_type.getId();
hid_t space_id = data_space.getId();
hid_t plist_id = create_plist.getId();
hid_t attr_id = H5Acreate2(getId(), name, type_id, space_id, plist_id, H5P_DEFAULT);
// If the attribute id is valid, create and return the Attribute object
if (attr_id > 0) {
Attribute attr;
f_Attribute_setId(&attr, attr_id);
return (attr);
}
else
throw AttributeIException(inMemFunc("createAttribute"), "H5Acreate2 failed");
}
//--------------------------------------------------------------------------
// Function: H5Object::createAttribute
///\brief This is an overloaded member function, provided for convenience.
/// It differs from the above function in that it takes
/// a reference to an \c H5std_string for \a name.
// Programmer Binh-Minh Ribler - 2000
//--------------------------------------------------------------------------
Attribute
H5Object::createAttribute(const H5std_string &name, const DataType &data_type, const DataSpace &data_space,
const PropList &create_plist) const
{
return (createAttribute(name.c_str(), data_type, data_space, create_plist));
}
//--------------------------------------------------------------------------
// Function: H5Object::openAttribute
///\brief Opens an attribute given its name.
///\param name - IN: Name of the attribute
///\return Attribute instance
///\exception H5::AttributeIException
// Programmer Binh-Minh Ribler - 2000
//--------------------------------------------------------------------------
Attribute
H5Object::openAttribute(const char *name) const
{
hid_t attr_id = H5Aopen(getId(), name, H5P_DEFAULT);
if (attr_id > 0) {
Attribute attr;
f_Attribute_setId(&attr, attr_id);
return (attr);
}
else {
throw AttributeIException(inMemFunc("openAttribute"), "H5Aopen failed");
}
}
//--------------------------------------------------------------------------
// Function: H5Object::openAttribute
///\brief This is an overloaded member function, provided for convenience.
/// It differs from the above function in that it takes
/// a reference to an \c H5std_string for \a name.
// Programmer Binh-Minh Ribler - 2000
//--------------------------------------------------------------------------
Attribute
H5Object::openAttribute(const H5std_string &name) const
{
return (openAttribute(name.c_str()));
}
//--------------------------------------------------------------------------
// Function: H5Object::openAttribute
///\brief Opens an attribute given its index.
///\param idx - IN: Index of the attribute, a 0-based, non-negative integer
///\return Attribute instance
///\exception H5::AttributeIException
// Programmer Binh-Minh Ribler - 2000
//--------------------------------------------------------------------------
Attribute
H5Object::openAttribute(const unsigned int idx) const
{
hid_t attr_id = H5Aopen_by_idx(getId(), ".", H5_INDEX_CRT_ORDER, H5_ITER_INC, static_cast<hsize_t>(idx),
H5P_DEFAULT, H5P_DEFAULT);
if (attr_id > 0) {
Attribute attr;
f_Attribute_setId(&attr, attr_id);
return (attr);
}
else {
throw AttributeIException(inMemFunc("openAttribute"), "H5Aopen_by_idx failed");
}
}
//--------------------------------------------------------------------------
// Function: H5Object::attrExists
///\brief Checks whether the named attribute exists at this location.
///\param name - IN: Name of the attribute to be queried
///\exception H5::AttributeIException
// Programmer Binh-Minh Ribler - 2013
//--------------------------------------------------------------------------
bool
H5Object::attrExists(const char *name) const
{
// Call C routine H5Aexists to determine whether an attribute exists
// at this location, which could be specified by a file, group, dataset,
// or named datatype.
herr_t ret_value = H5Aexists(getId(), name);
if (ret_value > 0)
return true;
else if (ret_value == 0)
return false;
else // Raise exception when H5Aexists returns a negative value
throw AttributeIException(inMemFunc("attrExists"), "H5Aexists failed");
}
//--------------------------------------------------------------------------
// Function: H5Object::attrExists
///\brief This is an overloaded member function, provided for convenience.
/// It differs from the above function in that it takes
/// a reference to an \c H5std_string for \a name.
// Programmer Binh-Minh Ribler - 2000
//--------------------------------------------------------------------------
bool
H5Object::attrExists(const H5std_string &name) const
{
return (attrExists(name.c_str()));
}
//--------------------------------------------------------------------------
// Function: H5Object::removeAttr
///\brief Removes the named attribute from this object.
///\param name - IN: Name of the attribute to be removed
///\exception H5::AttributeIException
// Programmer Binh-Minh Ribler - 2000
//--------------------------------------------------------------------------
void
H5Object::removeAttr(const char *name) const
{
herr_t ret_value = H5Adelete(getId(), name);
if (ret_value < 0)
throw AttributeIException(inMemFunc("removeAttr"), "H5Adelete failed");
}
//--------------------------------------------------------------------------
// Function: H5Object::removeAttr
///\brief This is an overloaded member function, provided for convenience.
/// It differs from the above function in that it takes
/// a reference to an \c H5std_string for \a name.
// Programmer Binh-Minh Ribler - 2000
//--------------------------------------------------------------------------
void
H5Object::removeAttr(const H5std_string &name) const
{
removeAttr(name.c_str());
}
//--------------------------------------------------------------------------
// Function: H5Object::renameAttr
///\brief Renames the named attribute from this object.
///\param oldname - IN: Name of the attribute to be renamed
///\param newname - IN: New name ame of the attribute
///\exception H5::AttributeIException
// Programmer Binh-Minh Ribler - Mar, 2005
//--------------------------------------------------------------------------
void
H5Object::renameAttr(const char *oldname, const char *newname) const
{
herr_t ret_value = H5Arename(getId(), oldname, newname);
if (ret_value < 0)
throw AttributeIException(inMemFunc("renameAttr"), "H5Arename failed");
}
//--------------------------------------------------------------------------
// Function: H5Object::renameAttr
///\brief This is an overloaded member function, provided for convenience.
/// It differs from the above function in that it takes
/// a reference to an \c H5std_string for the names.
// Programmer Binh-Minh Ribler - Mar, 2005
//--------------------------------------------------------------------------
void
H5Object::renameAttr(const H5std_string &oldname, const H5std_string &newname) const
{
renameAttr(oldname.c_str(), newname.c_str());
}
// end of Notes for H5A wrappers
//--------------------------------------------------------------------------
// Function: H5Object::getNumAttrs
///\brief Deprecated - replaced by H5Location::getNumAttrs()
// brief Returns the number of attributes attached to this HDF5 object.
///\return Number of attributes
///\exception H5::AttributeIException
// Programmer Binh-Minh Ribler - 2000
// Modification
// - Moved to H5Location to allow passing an attribute id to the
// C API, in 1.8.20.
//--------------------------------------------------------------------------
int
H5Object::getNumAttrs() const
{
H5O_info_t oinfo; /* Object info */
if (H5Oget_info(getId(), &oinfo) < 0)
throwException("getNumAttrs", "H5Oget_info failed");
return (static_cast<int>(oinfo.num_attrs));
}
//--------------------------------------------------------------------------
// Function: getObjName
///\brief Given an id, returns the type of the object.
///\return The name of the object
// Programmer Binh-Minh Ribler - Mar, 2014
//--------------------------------------------------------------------------
ssize_t
H5Object::getObjName(char *obj_name, size_t buf_size) const
{
// H5Iget_name will get buf_size-1 chars of the name to null terminate it
ssize_t name_size = H5Iget_name(getId(), obj_name, buf_size);
// If H5Iget_name returns a negative value, raise an exception
if (name_size < 0) {
throwException("getObjName", "H5Iget_name failed");
}
else if (name_size == 0) {
throwException("getObjName", "Object must have a name, but name length is 0");
}
// Return length of the name
return (name_size);
}
//--------------------------------------------------------------------------
// Function: H5Object::getObjName
///\brief Returns the name of this object as an \a H5std_string.
///\return Name of the object
///\exception H5::Exception
// Programmer Binh-Minh Ribler - Mar, 2014
//--------------------------------------------------------------------------
H5std_string
H5Object::getObjName() const
{
H5std_string obj_name(""); // object name to return
// Preliminary call to get the size of the object name
ssize_t name_size = H5Iget_name(getId(), NULL, static_cast<size_t>(0));
// If H5Iget_name failed, throw exception
if (name_size < 0) {
throwException("getObjName", "H5Iget_name failed");
}
else if (name_size == 0) {
throwException("getObjName", "Object must have a name, but name length is 0");
}
// Object's name exists, retrieve it
else if (name_size > 0) {
char *name_C = new char[name_size + 1]; // temporary C-string
HDmemset(name_C, 0, name_size + 1); // clear buffer
// Use overloaded function
name_size = getObjName(name_C, name_size + 1);
// Convert the C object name to return
obj_name = name_C;
// Clean up resource
delete[] name_C;
}
// Return object's name
return (obj_name);
}
//--------------------------------------------------------------------------
// Function: H5Object::getObjName
///\brief Gets the name of this object, returning its length.
///\param obj_name - OUT: Buffer for the name string as \a H5std_string
///\param len - IN: Desired length of the name, default to 0
///\return Actual length of the object name
///\exception H5::Exception
///\par Description
/// This function retrieves the object's name as an std string.
/// buf_size can specify a specific length or default to 0, in
/// which case the entire name will be retrieved.
// Programmer Binh-Minh Ribler - Mar, 2014
//--------------------------------------------------------------------------
ssize_t
H5Object::getObjName(H5std_string &obj_name, size_t len) const
{
ssize_t name_size = 0;
// If no length is provided, get the entire object name
if (len == 0) {
obj_name = getObjName();
name_size = obj_name.length();
}
// If length is provided, get that number of characters in name
else {
char *name_C = new char[len + 1]; // temporary C-string
HDmemset(name_C, 0, len + 1); // clear buffer
// Use overloaded function
name_size = getObjName(name_C, len + 1);
// Convert the C object name to return
obj_name = name_C;
// Clean up resource
delete[] name_C;
}
// Otherwise, keep obj_name intact
// Return name size
return (name_size);
}
//--------------------------------------------------------------------------
// Function: H5Object destructor
///\brief Noop destructor.
// Programmer Binh-Minh Ribler - 2000
//--------------------------------------------------------------------------
H5Object::~H5Object()
{
}
#endif // DOXYGEN_SHOULD_SKIP_THIS
} // namespace H5
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