/*******************************************************************************
 * SAT4J: a SATisfiability library for Java Copyright (C) 2004-2008 Daniel Le Berre
 *
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU Lesser General Public License Version 2.1 or later (the
 * "LGPL"), in which case the provisions of the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of the LGPL, and not to allow others to use your version of
 * this file under the terms of the EPL, indicate your decision by deleting
 * the provisions above and replace them with the notice and other provisions
 * required by the LGPL. If you do not delete the provisions above, a recipient
 * may use your version of this file under the terms of the EPL or the LGPL.
 * 
 * Based on the original MiniSat specification from:
 * 
 * An extensible SAT solver. Niklas Een and Niklas Sorensson. Proceedings of the
 * Sixth International Conference on Theory and Applications of Satisfiability
 * Testing, LNCS 2919, pp 502-518, 2003.
 *
 * See www.minisat.se for the original solver in C++.
 * 
 *******************************************************************************/
package org.sat4j;

import org.sat4j.core.ASolverFactory;
import org.sat4j.minisat.SolverFactory;
import org.sat4j.reader.InstanceReader;
import org.sat4j.reader.Reader;
import org.sat4j.specs.ISolver;

/**
 * Very simple launcher, to be used during the SAT competition or the SAT race
 * for instance.
 * 
 * @author daniel
 * 
 */
public class BasicLauncher<T extends ISolver> extends AbstractLauncher {

	/**
     * 
     */
	private static final long serialVersionUID = 1L;

	private final ASolverFactory<T> factory;

	public BasicLauncher(ASolverFactory<T> factory) {
		this.factory = factory;
	}

	/**
	 * Lance le prouveur sur un fichier Dimacs.
	 * 
	 * @param args
	 * 		doit contenir le nom d'un fichier Dimacs, eventuellement compress?.
	 */
	public static void main(final String[] args) {
		BasicLauncher<ISolver> lanceur = new BasicLauncher<ISolver>(
				SolverFactory.instance());
		if (args.length!=1) {
			lanceur.usage();
			return;
		}
		lanceur.run(args);
		System.exit(lanceur.getExitCode().value());
	}

	@Override
	protected ISolver configureSolver(String[] args) {
		ISolver asolver = factory.defaultSolver();
		asolver.setTimeout(Integer.MAX_VALUE);
		asolver.setDBSimplificationAllowed(true);
		log(asolver.toString(COMMENT_PREFIX)); //$NON-NLS-1$
		return asolver;
	}

	@Override
	protected Reader createReader(ISolver theSolver, String problemname) {
		return new InstanceReader(theSolver);
	}

	@Override
	public void usage() {
		log("java -jar org.sat4j.core.jar <cnffile>");
	}

	@Override
	protected String getInstanceName(String[] args) {
		assert args.length == 1;
		return args[0];
	}
}