tikhomirov@287: /*
tikhomirov@287:  * Copyright (c) 2011 TMate Software Ltd
tikhomirov@287:  *  
tikhomirov@287:  * This program is free software; you can redistribute it and/or modify
tikhomirov@287:  * it under the terms of the GNU General Public License as published by
tikhomirov@287:  * the Free Software Foundation; version 2 of the License.
tikhomirov@287:  *
tikhomirov@287:  * This program is distributed in the hope that it will be useful,
tikhomirov@287:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
tikhomirov@287:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
tikhomirov@287:  * GNU General Public License for more details.
tikhomirov@287:  *
tikhomirov@287:  * For information on how to redistribute this software under
tikhomirov@287:  * the terms of a license other than GNU General Public License
tikhomirov@287:  * contact TMate Software at support@hg4j.com
tikhomirov@287:  */
tikhomirov@287: package org.tmatesoft.hg.util;
tikhomirov@287: 
tikhomirov@287: import java.io.File;
tikhomirov@287: import java.io.FileInputStream;
tikhomirov@287: import java.io.FileNotFoundException;
tikhomirov@287: import java.io.IOException;
tikhomirov@287: import java.nio.ByteBuffer;
tikhomirov@287: import java.nio.channels.ReadableByteChannel;
tikhomirov@287: 
tikhomirov@295: import org.tmatesoft.hg.internal.StreamLogFacility;
tikhomirov@295: 
tikhomirov@287: /**
tikhomirov@287:  *
tikhomirov@287:  * @author Artem Tikhomirov
tikhomirov@287:  * @author TMate Software Ltd.
tikhomirov@287:  */
tikhomirov@287: public class RegularFileInfo implements FileInfo {
tikhomirov@287: 	private File file;
tikhomirov@287: 	
tikhomirov@287: 	public RegularFileInfo() {
tikhomirov@287: 	}
tikhomirov@287: 	
tikhomirov@287: 	public void init(File f) {
tikhomirov@287: 		file = f;
tikhomirov@287: 	}
tikhomirov@287: 	
tikhomirov@287: 	public boolean exists() {
tikhomirov@287: 		return file.canRead() && file.isFile();
tikhomirov@287: 	}
tikhomirov@287: 
tikhomirov@287: 	public int lastModified() {
tikhomirov@287: 		return (int) (file.lastModified() / 1000);
tikhomirov@287: 	}
tikhomirov@287: 
tikhomirov@287: 	public long length() {
tikhomirov@287: 		return file.length();
tikhomirov@287: 	}
tikhomirov@287: 
tikhomirov@287: 	public ReadableByteChannel newInputChannel() {
tikhomirov@287: 		try {
tikhomirov@287: 			return new FileInputStream(file).getChannel();
tikhomirov@287: 		} catch (FileNotFoundException ex) {
tikhomirov@295: 			StreamLogFacility.newDefault().debug(getClass(), ex, null);
tikhomirov@287: 			// shall not happen, provided this class is used correctly
tikhomirov@287: 			return new ReadableByteChannel() {
tikhomirov@287: 				
tikhomirov@287: 				public boolean isOpen() {
tikhomirov@287: 					return true;
tikhomirov@287: 				}
tikhomirov@287: 				
tikhomirov@287: 				public void close() throws IOException {
tikhomirov@287: 				}
tikhomirov@287: 				
tikhomirov@287: 				public int read(ByteBuffer dst) throws IOException {
tikhomirov@287: 					// EOF right away
tikhomirov@287: 					return -1;
tikhomirov@287: 				}
tikhomirov@287: 			};
tikhomirov@287: 		}
tikhomirov@287: 	}
tikhomirov@287: 
tikhomirov@287: }