[svn-r6303] Purpose:

    new functions
Description:
    Added these member functions to class Group per the new C functions
    H5Gget_num_objs, H5Gget_objname_by_idx and H5Gget_objtype_by_idx:

        // Returns the number of objects in the group.
        hsize_t getNumObjs() const;

        // Retrieves the name of an object in a given group by giving index
        ssize_t getObjnameByIdx(hsize_t idx, string& name, size_t size) const;

        // Returns the type of an object in a given group by giving index;
        // the overloaded function also provided the object type in text as
        // "group" for H5G_GROUP
        // "dataset" for H5G_DATASET
        // "datatype" for H5G_TYPE
        int getObjTypeByIdx(hsize_t idx) const;
        int getObjTypeByIdx(hsize_t idx, string& type_name) const;
Platforms:
    SunOS 5.7 (arabica)
    Linux 6.2 (eirene)
    IRIX 6.5.11 (modi4)

2 files changed, 68 insertions, 0 deletions

diff --git a/c++/src/H5Group.cpp b/c++/src/H5Group.cpp
index a7d72f8..b8cc4a4 100644
--- a/c++/src/H5Group.cpp
+++ b/c++/src/H5Group.cpp
@@ -53,6 +53,59 @@ hid_t Group::getLocId() const
 // Creates a copy of an existing Group using its id
 Group::Group( const hid_t group_id ) : H5Object( group_id ) {}
 
+// Returns the number of objects in the group.
+hsize_t Group::getNumObjs() const
+{
+   hsize_t num_objs;
+   herr_t ret_value = H5Gget_num_objs(id, &num_objs);
+   if(ret_value < 0)
+   {
+      throwException("getNumObjs", "H5Gget_num_objs failed");
+   }
+   return (num_objs);
+}
+
+// Retrieves the name of an object in a given group by giving index
+ssize_t Group::getObjnameByIdx(hsize_t idx, string& name, size_t size) const
+{
+   char* name_C = new char[size];
+   ssize_t name_len = H5Gget_objname_by_idx(id, idx, name_C, size);
+   if(name_len < 0)
+   {
+      throwException("getObjnameByIdx", "H5Gget_objname_by_idx failed");
+   }
+   name = string( name_C );
+   delete [] name_C;
+   return (name_len);
+}
+
+// Returns the type of an object in a given group by giving index
+int Group::getObjTypeByIdx(hsize_t idx) const
+{
+   int obj_type = H5Gget_objtype_by_idx(id, idx);
+   if (obj_type == H5G_UNKNOWN)
+   {
+	   throwException("getObjTypeByIdx", "H5Gget_objtype_by_idx failed");
+   }
+   return (obj_type);
+}
+int Group::getObjTypeByIdx(hsize_t idx, string& type_name) const
+{
+   int obj_type = H5Gget_objtype_by_idx(id, idx);
+   switch (obj_type)
+   {
+	case H5G_GROUP: type_name = string("group"); break;
+	case H5G_DATASET: type_name = string("dataset"); break;
+	case H5G_TYPE: type_name = string("datatype"); break;
+	case H5G_UNKNOWN:
+	default:
+   	{
+	   throwException("getObjTypeByIdx", "H5Gget_objtype_by_idx failed");
+	}
+   }
+   return (obj_type);
+}
+
 // Iterates a user's function over the entries of a group.
 //int Group::iterateElems( const string& name, int *idx, H5G_iterate_t op , void *op_data )
 //{
diff --git a/c++/src/H5Group.h b/c++/src/H5Group.h
index c65a335..25c1b9e 100644
--- a/c++/src/H5Group.h
+++ b/c++/src/H5Group.h
@@ -28,6 +28,21 @@ class H5_DLLCPP Group : public H5Object, public CommonFG {
 	// Copy constructor: makes a copy of the original object
 	Group( const Group& original );
 
+	// Returns the number of objects in the group.
+	hsize_t getNumObjs() const;
+
+	// Retrieves the name of an object in a given group by giving index
+	//ssize_t getObjnameByIdx(hsize_t idx, char *name, size_t size) const;
+	ssize_t getObjnameByIdx(hsize_t idx, string& name, size_t size) const;
+
+        // Returns the type of an object in a given group by giving index;
+        // the overloaded function also provided the object type in text as
+        // "group" for H5G_GROUP
+        // "dataset" for H5G_DATASET
+        // "datatype" for H5G_TYPE
+	int getObjTypeByIdx(hsize_t idx) const;
+	int getObjTypeByIdx(hsize_t idx, string& type_name) const;
+
 	// for CommonFG to get the file id
 	virtual hid_t getLocId() const;