Function lookupAttribute

plugins/e57/libE57Format/src/E57XmlParser.cpp:107–115

   }

   ustring lookupAttribute( const Attributes &attributes, const XMLCh *attribute_name )
   {
      XMLSize_t attr_index;
      if ( !attributes.getIndex( attribute_name, attr_index ) )
      {
         throw E57_EXCEPTION2( ErrorBadXMLFormat, "attributeName=" + toUString( attribute_name ) );
      }
      return ( toUString( attributes.getValue( attr_index ) ) );
   }

   bool isAttributeDefined( const Attributes &attributes, const XMLCh *attribute_name )
   {