/* Directory -- Filesystem directory object+
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+
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  Digital Image Library servlet components+
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+
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  Copyright (C) 2003 Robert Casties (robcast@mail.berlios.de)+
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+
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  This program is free software; you can redistribute  it and/or modify it+
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  under  the terms of  the GNU General  Public License as published by the+
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  Free Software Foundation;  either version 2 of the  License, or (at your+
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  option) any later version.+
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   +
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  Please read license.txt for the full details. A copy of the GPL+
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  may be found at http://www.gnu.org/copyleft/lgpl.html+
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+
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  You should have received a copy of the GNU General Public License+
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  along with this program; if not, write to the Free Software+
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  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA+
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+
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 * Created on 26.08.2003+
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 *+
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 */+
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package digilib.io;+
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+
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import java.io.File;+
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import java.util.Arrays;+
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+
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import org.apache.log4j.Logger;+
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+
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/** Class for filesystem directories+
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 * @author casties+
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 *+
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 */+
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public class Directory {+
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+
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	protected Logger logger = Logger.getLogger(this.getClass());+
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+
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	/** File object pointing to the directory */+
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	protected File dir = null;+
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	/** parent directory */+
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	protected Directory parent = null;+
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	/** list of filenames in the directory */+
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	protected String[] list = null;+
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+
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	/** Default constructor.+
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	 * +
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	 */+
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	public Directory() {+
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		super();+
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	}+
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	+
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	/** Constructor taking a File object.+
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	 * +
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	 * @param d+
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	 */+
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	public Directory(File d) {+
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		dir = d;+
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	}+
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+
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	/** Constructor taking a File object and a parent.+
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	 * +
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	 * @param dir+
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	 * @param parent+
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	 */+
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	public Directory(File dir, Directory parent) {+
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		this.dir = dir;+
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		this.parent = parent;+
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	}+
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+
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	/** Constructor taking a directory name.+
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	 * +
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	 * @param d+
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	 */+
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	public Directory(String dn) {+
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		dir = new File(dn);+
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	}+
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	+
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	+
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	/** Reads the names of the files in the directory.+
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	 * Fills the filenames array. Returns if the operation was successful.+
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	 * +
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	 * @return+
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	 */+
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	public boolean readDir() {+
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		if (dir != null) {+
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			//logger.debug("reading dir: "+dir.getPath());+
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			list = dir.list();+
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			if (list != null) {+
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				Arrays.sort(list);+
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			}+
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			//logger.debug("  done");+
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		}+
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		return (list != null);+
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	}+
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	+
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	/**+
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	 * @return+
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	 */+
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	public File getDir() {+
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		return dir;+
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	}+
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+
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	/**+
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	 * @param dir+
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	 */+
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	public void setDir(File dir) {+
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		this.dir = dir;+
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	}+
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	+
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	/**+
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	 * @return+
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	 */+
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	Directory getParent() {+
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		return parent;+
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	}+
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+
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	/**+
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	 * @param parent+
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	 */+
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	void setParent(Directory parent) {+
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		this.parent = parent;+
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	}+
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+
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+
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	/**+
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	 * @return Returns the filenames.+
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	 */+
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	public String[] getFilenames() {+
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		return list;+
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	}+
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	+
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	/**+
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	 * @param filenames The filenames to set.+
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	 */+
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	public void setFilenames(String[] filenames) {+
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		this.list = filenames;+
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	}+
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	+
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	public void clearFilenames() {+
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		this.list = null;+
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	}+
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}+
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