[svn-r24216] Purpose: Merged changes from trunk

Description from trunk, r22836
    In this bug, H5File doesn't have the ability to create attribute.  The
    following changes will provide that functionality and several others that
    were also missing:
    - Added an abstract class H5Location in between IdComponent and H5Object.
    - New class structure of IdComponent, H5Location, H5Object, H5File
                                IdComponent
                                     |
                                H5Location
                                /        \
                        H5Object        H5File
    - Wrappers in H5Object were moved to H5Location because the related C
      functions take either file, group, dataset, or named datatype ID.
    - Added wrapper for H5Rget_obj_type2
    - Added tests for file attributes and H5Rget_obj_type2 wrapper

Description from trunk, r22845
    Fixed miscellaneous inconsistencies and typos, which also took
    care of the failure in Packet Table test on daily test today.

Description from trunk, r24143
    Fixed comments, documentation, and mis-matched DOXYGEN_SHOULD_SKIP_THIS pairs.

Description from trunk, r24188
    - The failure in daily test was caused by missing initialization of member
    "id" in a few constructors.  This is now fixed.
    - Added two overloaded H5Location::setComment
    - Improved some error reporting in H5Location
    - Improved error reporting in tests

Description from trunk, r24189
    Changed header guards from single underscore to double underscore.

Platforms tested:
    SunOS 5.11 (emu)
    Linux/32 2.6 (jam)
    Linux/64 2.6 (koala)/PGI compilers

1 files changed, 167 insertions, 0 deletions

diff --git a/c++/src/H5Location.h b/c++/src/H5Location.h
new file mode 100644
index 0000000..3aadd50
--- /dev/null
+++ b/c++/src/H5Location.h
@@ -0,0 +1,167 @@
+// C++ informative line for the emacs editor: -*- C++ -*-
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+ * 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 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://hdfgroup.org/HDF5/doc/Copyright.html.  If you do not have          *
+ * access to either file, you may request a copy from help@hdfgroup.org.     *
+ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+#ifndef __H5Location_H
+#define __H5Location_H
+
+#include "H5Classes.h"		// constains forward class declarations
+
+// H5Location is an abstract class.  It provides a collection of wrappers
+// of C functions which take location IDs.  Most of these were in H5Object
+// but are now moved here for H5File's access.
+
+#ifndef H5_NO_NAMESPACE
+namespace H5 {
+#endif
+
+class H5_DLLCPP H5Location;  // forward declaration for UserData4Aiterate
+
+// Define the operator function pointer for H5Aiterate().
+typedef void (*attr_operator_t)( H5Location& loc/*in*/,
+                                 const H5std_string attr_name/*in*/,
+                                 void *operator_data/*in,out*/);
+
+class UserData4Aiterate { // user data for attribute iteration
+   public:
+	attr_operator_t op;
+	void* opData;
+	H5Location* location;
+};
+
+// An H5Location can be a file, group, dataset, or committed datatype.
+
+class H5_DLLCPP H5Location : public IdComponent {
+   public:
+	// Creates an attribute for the specified object at this location
+	// PropList is currently not used, so always be default.
+	Attribute createAttribute( const char* name, const DataType& type, const DataSpace& space, const PropList& create_plist = PropList::DEFAULT ) const;
+	Attribute createAttribute( const H5std_string& name, const DataType& type, const DataSpace& space, const PropList& create_plist = PropList::DEFAULT ) const;
+
+	// Given its name, opens the attribute that belongs to an object at
+	// this location.
+	Attribute openAttribute( const char* name ) const;
+	Attribute openAttribute( const H5std_string& name ) const;
+
+	// Given its index, opens the attribute that belongs to an object at
+	// this location.
+	Attribute openAttribute( const unsigned int idx ) const;
+
+	// Flushes all buffers associated with this location to disk.
+	void flush( H5F_scope_t scope ) const;
+
+	// Gets the name of the file, specified by this location.
+	H5std_string getFileName() const;
+
+	// Determines the number of attributes at this location.
+	int getNumAttrs() const;
+
+#ifndef H5_NO_DEPRECATED_SYMBOLS
+	// Retrieves the type of object that an object reference points to.
+	H5G_obj_t getObjType(void *ref, H5R_type_t ref_type = H5R_OBJECT) const;
+#endif /* H5_NO_DEPRECATED_SYMBOLS */
+
+	// Retrieves the type of object that an object reference points to.
+	H5O_type_t getRefObjType(void *ref, H5R_type_t ref_type = H5R_OBJECT) const;
+	// Note: getRefObjType deprecates getObjType, but getObjType's name is
+	// misleading, so getRefObjType is used in the new function instead.
+
+	// Iterate user's function over the attributes at this location.
+	int iterateAttrs(attr_operator_t user_op, unsigned* idx = NULL, void* op_data = NULL);
+
+	// Checks whether the named attribute exists at this location.
+	bool attrExists(const char* name) const;
+	bool attrExists(const H5std_string& name) const;
+
+	// Renames the named attribute to a new name.
+	void renameAttr(const char* oldname, const char* newname) const;
+	void renameAttr(const H5std_string& oldname, const H5std_string& newname) const;
+
+	// Removes the named attribute from this location.
+	void removeAttr(const char* name) const;
+	void removeAttr(const H5std_string& name) const;
+
+	// Sets the comment for an HDF5 object specified by its name.
+	void setComment(const char* name, const char* comment) const;
+	void setComment(const H5std_string& name, const H5std_string& comment) const;
+	void setComment(const char* comment) const;
+	void setComment(const H5std_string& comment) const;
+
+	// Retrieves comment for the HDF5 object specified by its name.
+	H5std_string getComment(const char* name, size_t bufsize=256) const;
+	H5std_string getComment(const H5std_string& name, size_t bufsize=256) const;
+
+	// Removes the comment for the HDF5 object specified by its name.
+	void removeComment(const char* name) const;
+	void removeComment(const H5std_string& name) const;
+
+	// Creates a reference to a named object or to a dataset region
+	// in this object.
+	void reference(void* ref, const char* name, 
+			H5R_type_t ref_type = H5R_OBJECT) const;
+	void reference(void* ref, const H5std_string& name, 
+			H5R_type_t ref_type = H5R_OBJECT) const;
+	void reference(void* ref, const char* name, const DataSpace& dataspace,
+			H5R_type_t ref_type = H5R_DATASET_REGION) const;
+	void reference(void* ref, const H5std_string& name, const DataSpace& dataspace,
+			H5R_type_t ref_type = H5R_DATASET_REGION) const;
+
+	// Open a referenced object whose location is specified by either
+	// a file, an HDF5 object, or an attribute.
+	void dereference(const H5Location& loc, const void* ref, H5R_type_t ref_type = H5R_OBJECT);
+	void dereference(const Attribute& attr, const void* ref, H5R_type_t ref_type = H5R_OBJECT);
+
+	// Retrieves a dataspace with the region pointed to selected.
+	DataSpace getRegion(void *ref, H5R_type_t ref_type = H5R_DATASET_REGION) const;
+
+	///\brief Returns an identifier. (pure virtual)
+	virtual hid_t getId() const = 0;
+
+   protected:
+#ifndef DOXYGEN_SHOULD_SKIP_THIS
+	// Default constructor,
+	H5Location();
+
+	// Creates a copy of an existing object giving the location id.
+	H5Location(const hid_t loc_id);
+
+	// Copy constructor.
+	H5Location(const H5Location& original);
+
+	// Creates a reference to an HDF5 object or a dataset region.
+	void p_reference(void* ref, const char* name, hid_t space_id, H5R_type_t ref_type) const;
+
+	// Dereferences a ref into an HDF5 id.
+	hid_t p_dereference(hid_t loc_id, const void* ref, H5R_type_t ref_type, const char* from_func);
+
+#ifndef H5_NO_DEPRECATED_SYMBOLS
+	// Retrieves the type of object that an object reference points to.
+	H5G_obj_t p_get_obj_type(void *ref, H5R_type_t ref_type) const;
+#endif /* H5_NO_DEPRECATED_SYMBOLS */
+
+	// Retrieves the type of object that an object reference points to.
+	H5O_type_t p_get_ref_obj_type(void *ref, H5R_type_t ref_type) const;
+
+	// Noop destructor.
+	virtual ~H5Location();
+
+#endif // DOXYGEN_SHOULD_SKIP_THIS
+
+}; /* end class H5Location */
+
+#ifndef H5_NO_NAMESPACE
+}
+#endif
+#endif // __H5Location_H