// Residual - Virtual machine to run LucasArts' 3D adventure games
// Copyright (C) 2003-2004 The ScummVM-Residual Team (www.scummvm.org)
//
//  This library 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 library 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 library; if not, write to the Free Software
//  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307  USA

#ifndef LAB_H
#define LAB_H

#include <string>
#include <cstdio>
#include <map>

class Block {
public:
	Block(const char *data, int len) : _data(data), _len(len) {}
	const char *data() const { return _data; }
	int len() const { return _len; }

	~Block() { delete[] _data; }

private:
	Block();
	const char *_data;
	int _len;
	bool _owner;
};

class Lab {
public:
	Lab() : _f(NULL) { }
	explicit Lab(const char *filename) : _f(NULL) { open(filename); }
	bool open(const char *filename);
	bool isOpen() const { return _f != NULL; }
	void close();
	bool fileExists(const char *filename) const;
	Block *getFileBlock(const char *filename) const;
	std::FILE *openNewStream(const char *filename) const;
	int fileLength(const char *filename) const;

	~Lab() { close(); }

private:
	struct LabEntry {
		LabEntry(int the_offset, int the_len) :
		offset(the_offset), len(the_len) {}
		int offset, len;
	};

	std::FILE *_f;
	typedef std::map<std::string, LabEntry> file_map_type;
	file_map_type _file_map;

	file_map_type::const_iterator find_filename(const char *filename) const;
};

#endif