1 files changed, 85 insertions, 0 deletions
diff --git a/src/headerFieldFactory.hpp b/src/headerFieldFactory.hpp
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--- /dev/null
+++ b/src/headerFieldFactory.hpp
@@ -0,0 +1,85 @@
+//
+// VMime library (http://vmime.sourceforge.net)
+// Copyright (C) 2002-2004 Vincent Richard <[email protected]>
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public License as
+// published by the Free Software Foundation; either version 2 of
+// the License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+//
+
+#ifndef VMIME_HEADERFIELDFACTORY_HPP_INCLUDED
+#define VMIME_HEADERFIELDFACTORY_HPP_INCLUDED
+
+
+#include "headerField.hpp"
+#include "utility/singleton.hpp"
+
+
+namespace vmime
+{
+
+
+class headerFieldFactory : public utility::singleton <headerFieldFactory>
+{
+	friend class utility::singleton <headerFieldFactory>;
+
+protected:
+
+	headerFieldFactory();
+	~headerFieldFactory();
+
+	typedef headerField* (*AllocFunc)(void);
+	typedef std::map <string, AllocFunc> NameMap;
+	typedef std::map <headerField::Types, AllocFunc> TypeMap;
+
+	NameMap m_nameMap;
+	TypeMap m_typeMap;
+
+public:
+
+	template <class TYPE>
+	class registerer
+	{
+	public:
+
+		static headerField* creator()
+		{
+			// Allocate a new object
+			return new TYPE();
+		}
+	};
+
+
+	template <class T>
+	void registerName(const string& name)
+	{
+		m_nameMap.insert(NameMap::value_type(toLower(name), &registerer<T>::creator));
+	}
+
+	headerField* create(const string& name, const string& body = NULL_STRING);
+	headerField* create(const headerField::Types type, const string& name = NULL_STRING, const string& body = NULL_STRING);
+
+protected:
+
+	template <class T>
+	void registerType(const headerField::Types type)
+	{
+		m_typeMap.insert(TypeMap::value_type(type, &registerer<T>::creator));
+	}
+};
+
+
+} // vmime
+
+
+#endif // VMIME_HEADERFIELDFACTORY_HPP_INCLUDED