[svn-r24229] Purpose: Fix bug HDFFV-7520

Description:
    Added wrappers for H5Aexists.
    (merged from trunk)
Platforms Tested:
    Linux/32 2.6 (jam)
    Linux/64 2.6 (koala)
    Linux/ppc64 (ostrich)

1 files changed, 33 insertions, 0 deletions

diff --git a/c++/src/H5Location.cpp b/c++/src/H5Location.cpp
index a527712..1307740 100644
--- a/c++/src/H5Location.cpp
+++ b/c++/src/H5Location.cpp
@@ -250,6 +250,39 @@ int H5Location::getNumAttrs() const
 }
 
 //--------------------------------------------------------------------------
+// Function:	H5Location::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 H5Location::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:	H5Location::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 H5Location::attrExists(const H5std_string& name) const
+{
+   attrExists(name.c_str());
+}
+
+//--------------------------------------------------------------------------
 // Function:	H5Location::removeAttr
 ///\brief	Removes the named attribute from this object.
 ///\param	name - IN: Name of the attribute to be removed