added Vars<> container

src/vars.h

@@ -0,0 +1,206 @@
+/*
+ * This file is a part of EZC -- Easy templating in C++ library
+ * and is distributed under the BSD 3-Clause licence.
+ * Author: Tomasz Sowa <t.sowa@ttmath.org>
+ */
+
+/*
+ * Copyright (c) 2021, Tomasz Sowa
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ *  * Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ *
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ *  * Neither the name Tomasz Sowa nor the names of contributors to this
+ *    project may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+ * THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef headerfile_ezc_vars
+#define headerfile_ezc_vars
+
+#include "var.h"
+#include "utf8/utf8.h"
+#include <string>
+#include <map>
+#include <list>
+
+
+
+namespace Ezc
+{
+
+template<typename StreamType>
+class Vars
+{
+public:
+
+
+	Var<StreamType> & add(const char * name);
+	Var<StreamType> & add(const wchar_t * name);
+	Var<StreamType> & add(const std::string & name);
+	Var<StreamType> & add(const std::wstring & name);
+
+	void add(const char * name, 		const Var<StreamType> & var);
+	void add(const wchar_t * name, 		const Var<StreamType> & var);
+	void add(const std::string & name, 	const Var<StreamType> & var);
+	void add(const std::wstring & name, const Var<StreamType> & var);
+
+	Var<StreamType> * find(const char * name) const;
+	Var<StreamType> * find(const wchar_t * name) const;
+	Var<StreamType> * find(const std::string & name) const;
+	Var<StreamType> * find(const std::wstring & name) const;
+
+
+private:
+
+	typedef std::list<Var<StreamType>> VarList;
+	VarList var_list;
+
+	typedef std::map<std::wstring, Var<StreamType>*> VarMap;
+	VarMap var_map
+
+};
+
+
+
+template<typename StreamType>
+Var<StreamType> & Vars<StreamType>::add(const char * name)
+{
+	std::wstring name_wide;
+	pt::utf8_to_wide(name, name_wide);
+	add(name_wide);
+}
+
+
+template<typename StreamType>
+Var<StreamType> & Vars<StreamType>::add(const wchar_t * name)
+{
+	Var<StreamType> & var = var_map[name];
+	var.clear();
+	return var;
+}
+
+
+template<typename StreamType>
+Var<StreamType> & Vars<StreamType>::add(const std::string & name)
+{
+	std::wstring name_wide;
+	pt::utf8_to_wide(name, name_wide);
+	return add(name_wide);
+}
+
+
+template<typename StreamType>
+Var<StreamType> & Vars<StreamType>::add(const std::wstring & name)
+{
+	Var<StreamType> & var = var_map[name];
+	var.clear();
+	return var;
+}
+
+
+template<typename StreamType>
+void Vars<StreamType>::add(const char * name, const Var<StreamType> & var)
+{
+	std::wstring name_wide;
+	pt::utf8_to_wide(name, name_wide);
+	add(name_wide, var);
+}
+
+
+template<typename StreamType>
+void Vars<StreamType>::add(const wchar_t * name, const Var<StreamType> & var)
+{
+	var_list.push_back(var);
+	var_map[name] = &var_list.back();
+}
+
+
+template<typename StreamType>
+void Vars<StreamType>::add(const std::string & name, const Var<StreamType> & var)
+{
+	std::wstring name_wide;
+	pt::utf8_to_wide(name, name_wide);
+	add(name_wide, var);
+}
+
+
+template<typename StreamType>
+void Vars<StreamType>::add(const std::wstring & name, const Var<StreamType> & var)
+{
+	var_list.push_back(var);
+	var_map[name] = &var_list.back();
+}
+
+
+template<typename StreamType>
+Var<StreamType> * Vars<StreamType>::find(const char * name) const
+{
+	std::wstring name_wide;
+	pt::utf8_to_wide(name, name_wide);
+	return find(name_wide);
+}
+
+
+template<typename StreamType>
+Var<StreamType> * Vars<StreamType>::find(const wchar_t * name) const
+{
+	VarMap::const_iterator i = var_map.find(name);
+
+	if( i != var_map.end() )
+	{
+		return &(*i);
+	}
+
+	return nullptr;
+}
+
+
+template<typename StreamType>
+Var<StreamType> * Vars<StreamType>::find(const std::string & name) const
+{
+	std::wstring name_wide;
+	pt::utf8_to_wide(name, name_wide);
+	return find(name_wide);
+}
+
+
+template<typename StreamType>
+Var<StreamType> * Vars<StreamType>::find(const std::wstring & name) const
+{
+	VarMap::const_iterator i = var_map.find(name);
+
+	if( i != var_map.end() )
+	{
+		return &(*i);
+	}
+
+	return nullptr;
+}
+
+
+
+
+} // namespace
+
+#endif