/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 */

/*
 * This code is based on the original source code of Lord Avalot d'Argent version 1.3.
 * Copyright (c) 1994-1995 Mike, Mark and Thomas Thurman.
 */

namespace Avalanche {

enum flavourtype {ch_ega, ch_bgi, last_flavourtype};

struct chunkblocktype {
	flavourtype flavour;
	integer x, y;
	integer xl, yl;
	longint size;
	boolean natural;

	boolean memorise; /* Hold it in memory? */
};

untyped_file f;
string fn;
byte num_chunks, fv;
longint offset;
chunkblocktype ch;

int main(int argc, const char *argv[]) {
	pio_initialize(argc, argv);
	output << NL;
	output << "CHUNKER 12/3/1995 TT" << NL;
	output << NL;

	if (paramcount != 1) {
		output << "which chunk file?" << NL;
		exit(0);
	}

	fn = paramstr(1);
	assign(f, fn);
	reset(f, 1);
	output << "----- In chunk file " << fn << ", there are: -----" << NL;

	seek(f, 44);
	blockread(f, num_chunks, 1);
	output << format(num_chunks, 4) << " chunks:" << NL;

	output << "  No  Hdr    Offset  Flvr  Mem Nat      X      Y  Width Height Size of image" << NL;

	for (fv = 1; fv <= num_chunks; fv ++) {

		output << "Ch" << format(fv, 2) << ':';

		seek(f, 41 + fv * 4);

		output << format(41 + fv * 4, 4);
		blockread(f, offset, 4);
		output << format(offset, 10);

		seek(f, offset);
		blockread(f, ch, sizeof(ch));
		{
			if (ch.flavour == ch_bgi)
				output << " ch_BGI";
			else
				output << " ch_EGA";

			if (ch.memorise)
				output << " yes";
			else
				output << " no ";

			if (ch.natural)
				output << " yes";
			else
				output << " no ";

			output << format(ch.x, 7) << format(ch.y, 7) << format(ch.xl, 7) << format(ch.yl, 7) << format(ch.size, 10);
		}

		output << NL;
	}

	output << "---ENDS---" << NL;

	close(f);
	return EXIT_SUCCESS;
}

} // End of namespace Avalanche.