Initial commit

src/metadata.h

@@ -0,0 +1,63 @@
+/*
+Minetest
+Copyright (C) 2010-2013 celeron55, Perttu Ahola <celeron55@gmail.com>
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU Lesser General Public License as published by
+the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
+
+You should have received a copy of the GNU Lesser General Public License along
+with this program; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*/
+
+#pragma once
+
+#include "irr_v3d.h"
+#include <iostream>
+#include <vector>
+#include "util/string.h"
+
+class Metadata
+{
+	bool m_modified = false;
+public:
+	virtual ~Metadata() = default;
+
+	virtual void clear();
+	virtual bool empty() const;
+
+	bool operator==(const Metadata &other) const;
+	inline bool operator!=(const Metadata &other) const
+	{
+		return !(*this == other);
+	}
+
+	//
+	// Key-value related
+	//
+
+	size_t size() const;
+	bool contains(const std::string &name) const;
+	const std::string &getString(const std::string &name, u16 recursion = 0) const;
+	bool getStringToRef(const std::string &name, std::string &str, u16 recursion = 0) const;
+	virtual bool setString(const std::string &name, const std::string &var);
+	inline bool removeString(const std::string &name) { return setString(name, ""); }
+	const StringMap &getStrings() const
+	{
+		return m_stringvars;
+	}
+	// Add support for variable names in values
+	const std::string &resolveString(const std::string &str, u16 recursion = 0) const;
+
+	inline bool isModified() const  { return m_modified; }
+	inline void setModified(bool v) { m_modified = v; }
+protected:
+	StringMap m_stringvars;
+};