C++ API improvement

Description:
    - Added another argument, LinkCreatPropList& lcpl, to the CommonFG::createGroup()
      functions for the use of link creation property list.  The new argument has
      a default value.
        Group createGroup(const char* name, size_t size_hint = 0,
                    const LinkCreatPropList& lcpl = LinkCreatPropList::DEFAULT)
        Group createGroup(const H5std_string& name, size_t size_hint = 0,
                    const LinkCreatPropList& lcpl = LinkCreatPropList::DEFAULT)
    - Removed memory leaks caused by accidentally invoking p_get_member_type
    (in H5CompType.cpp, user reported via email, maybe no jira issue)
    - Made H5Location::closeObjId static, so no object is needed to close an hdf5 id.
    - Added classes StrCreatPropList, LinkCreatPropList, AttrCreatPropList
      for the C property list classes H5P_STRING_CREATE, H5P_LINK_CREATE,
      and H5P_ATTRIBUTE_CREATE.
Platforms tested:
    Linux/64 (jelly)
    Linux/64 (platypus)
    Darwin (osx1010test)

1 files changed, 62 insertions, 0 deletions

diff --git a/c++/src/H5AcreatProp.h b/c++/src/H5AcreatProp.h
new file mode 100644
index 0000000..9f81897
--- /dev/null
+++ b/c++/src/H5AcreatProp.h
@@ -0,0 +1,62 @@
+// 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 COPYING file, which can be found at the root of the source code       *
+ * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * If you do not have access to either file, you may request a copy from     *
+ * help@hdfgroup.org.                                                        *
+ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+#ifndef __H5AttrCreatPropList_H
+#define __H5AttrCreatPropList_H
+
+namespace H5 {
+
+/*! \class AttrCreatPropList
+    \brief Class AttrCreatPropList inherits from StrCreatPropList and provides
+    wrappers for the HDF5 attribute creation property list.
+*/
+// Inheritance: StrCreatPropList -> PropList -> IdComponent
+class H5_DLLCPP AttrCreatPropList : public StrCreatPropList {
+   public:
+        ///\brief Default attribute creation property list.
+        static const AttrCreatPropList& DEFAULT;
+
+        // Creates a attribute creation property list.
+        AttrCreatPropList();
+
+        ///\brief Returns this class name.
+        virtual H5std_string fromClass () const { return("AttrCreatPropList"); }
+
+        // Copy constructor: same as the original AttrCreatPropList.
+        AttrCreatPropList(const AttrCreatPropList& original);
+
+        // Creates a copy of an existing attribute creation property list
+        // using the property list id.
+        AttrCreatPropList(const hid_t acpl_id);
+
+        // Noop destructor
+        virtual ~AttrCreatPropList();
+
+#ifndef DOXYGEN_SHOULD_SKIP_THIS
+
+        // Deletes the global constant, should only be used by the library
+        static void deleteConstants();
+
+    private:
+        static AttrCreatPropList* DEFAULT_;
+
+        // Creates the global constant, should only be used by the library
+        static AttrCreatPropList* getConstant();
+
+#endif // DOXYGEN_SHOULD_SKIP_THIS
+}; // end of AttrCreatPropList
+
+} // namespace H5
+
+#endif // __H5AttrCreatPropList_H