internal name mechanism added at property creation

.gitignore

@@ -4,3 +4,5 @@ CMakeLists.txt.user
 build*
 *.swp
 .settings
+# ignore mac temporal files
+.DS_Store 

src/OpenMesh/Core/Utils/Property.hh

@@ -232,8 +232,8 @@ public:
 
 public:
 
-  explicit PropertyT(const std::string& _name = "<unknown>")
-    : BaseProperty(_name)
+  explicit PropertyT(const std::string& _name = "<unknown>", const std::string& _internal_type_name="" )
+    : BaseProperty(_name, _internal_type_name)
   { }
 
 public: // inherited from BaseProperty

src/OpenMesh/Core/Utils/PropertyContainer.hh

@@ -50,6 +50,7 @@
 #endif
 
 #include <OpenMesh/Core/Utils/Property.hh>
+#include <OpenMesh/Core/Utils/TypeName.hh>
 
 //-----------------------------------------------------------------------------
 namespace OpenMesh
@@ -104,7 +105,7 @@ public:
     int idx=0;
     for ( ; p_it!=p_end && *p_it!=nullptr; ++p_it, ++idx ) {};
     if (p_it==p_end) properties_.push_back(nullptr);
-    properties_[idx] = new PropertyT<T>(_name);
+    properties_[idx] = new PropertyT<T>(_name, get_type_name<T>() );        // create a new property with requested name and given (system dependent) internal typename
     return BasePropHandleT<T>(idx);
   }
 

src/OpenMesh/Core/Utils/typename.hh

@@ -0,0 +1,29 @@
+#ifndef TYPENAME_HH
+#define TYPENAME_HH
+
+/// Get an internal name for a type
+/// Important, this is depends on compilers and versions, do NOT se in file formats!
+/// This provides property type safty when only limited RTTI is available
+/// Solution adapted from OpenVolumeMesh
+
+#include <string>
+#include <typeinfo>
+
+namespace OpenMesh {
+
+template <typename T>
+std::string get_type_name()
+{
+#ifdef _MSC_VER
+    // MSVC'S type_name returns only a friendly name with name() method,
+    // to get a unique name use raw_name() method instead
+    return typeid(T).raw_name();
+#else
+    // GCC and clang curently return mangled name as name(), there is no raw_name() method
+    return typeid(T).name();
+#endif
+}
+
+}
+
+#endif // TYPENAME_HH