/*
 * This file is a part of EZC -- Easy templating in C++
 * and is distributed under the (new) BSD licence.
 * Author: Tomasz Sowa <t.sowa@slimaczek.pl>
 */

/* 
 * Copyright (c) 2007, 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.
 */

/*
 * version 0.9.0
 *
 */


#ifndef headerfileezc
#define headerfileezc

#include <string>
#include <sstream>
#include <fstream>
#include <vector>
#include <map>
#include <cstdlib>
#include <cstring>


namespace Ezc
{

std::string CreateMsg(const char * type, const char * arg = 0);
void SplitUnixDirectory(const char * name, std::string & dir, std::string & file);
void SplitUnixDirectory(const std::string & name, std::string & dir, std::string & file);

	
class Pattern
{
public:
	void ParseFile(const std::string & file_name);
	void ParseFile(const char * file_name);
	void Directory(const char * d);
	void Directory(const std::string & d);

	struct Item
	{
		enum ItemType 
		{
			item_none, item_container, item_text, item_ifany, item_for,
			item_else, item_end, item_err, item_normal, item_ifindex,
			item_include, item_is, item_ifone, item_comment
		};

		ItemType type;
		std::string text;
		std::vector<Item*> item_table;
		std::vector<std::string> directives;

		Item();
		Item(const Item & i);
		Item & operator=(const Item & i);
		void CopyItemTable(const Item & i);
		~Item();

		Item *   AddItem(const Item * porg = 0);
		Item *   AddItem(const Item & porg);
		void     ClearItems();
		ItemType LastItemType();
		void     DeleteLastItem();
		void     Clear();
	};

	Item item_root;

private:
	const char * itext;
	std::string directory;


	bool CheckFileName(const char * name);
	std::string ReadFile(const char * name);

	int  ReadCharInText();
	void SkipWhiteCharacters();

	std::string ReadDirective();
	std::string ReadString();
	std::string ReadDirectiveOrString();

	void CreateTreeReadItemDirectiveCheckEnding(Item & item);

	void ReadDirectiveIfany(Item & item);
	void ReadDirectiveIfone(Item & item);
	void ReadDirectiveIs(Item & item);
	void ReadDirectiveIfindex(Item & item);
	void ReadDirectiveFor(Item & item);
	void ReadDirectiveComment(Item & item);
	void ReadDirectiveInclude(Item & item);

	void CreateTreeReadItemDirective(Item & item);

	void CreateTreeReadItemText(Item & item);
	bool CreateTreeReadItem(Item & item);

	void CreateTreeReadIf(Item & item);
	void CreateTreeReadFor(Item & item);
	void CreateTree(Item & item);

	void CreateTreeReadInclude(Item & item);

}; // Pattern


struct Info
{
	std::string text;
	bool result;
	int iter;

	Info();
};



class Generator
{
private:
	typedef void (*UserFunction)(Info &);

	struct UserInfo
	{	
		UserFunction user_function;
		int iter;
	};

	typedef std::map<std::string, UserInfo> UserInfoTable;

public:

	void Insert(const std::string & key, UserFunction ufunction);
	std::string & Generate(Pattern & data);
	std::string & String();
	void Clear();

private:
	
	UserInfoTable user_info_table;
	std::string otext;

	bool Find(const std::string & key, UserInfo ** user_info);
	void MakeTextIf_go(Pattern::Item & item, bool result);
	bool MakeTextIfindexnumber(Pattern::Item & item, UserInfo * user_info, bool & result);
	void MakeTextIfany(Pattern::Item & item);
	void MakeTextIfone(Pattern::Item & item);
	void MakeTextIfindex(Pattern::Item & item);
	void MakeTextFor(Pattern::Item & item);
	void MakeTextContainer(Pattern::Item & item);
	void MakeTextNormal(Pattern::Item & item);
	void MakeTextIs(Pattern::Item & item);
	void MakeText(Pattern::Item & item);

}; // Generator

} // namespace Ezc


#endif