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.nio.channels.ReadableByteChannel;
tikhomirov@287: 
tikhomirov@287: /**
tikhomirov@287:  * Subset of File-related functionality to support other than {@link java.io.File}-based {@link FileIterator} implementations   
tikhomirov@287:  * 
tikhomirov@287:  * @author Artem Tikhomirov
tikhomirov@287:  * @author TMate Software Ltd.
tikhomirov@287:  */
tikhomirov@287: public interface FileInfo {
tikhomirov@287: 	
tikhomirov@287: 	/**
tikhomirov@287: 	 * @return true if the filesystem object described by this instance exists, is a regular file and can be read
tikhomirov@287: 	 */
tikhomirov@287: 	boolean exists();
tikhomirov@287: 	
tikhomirov@287: 	/**
tikhomirov@287: 	 * File last modification time, in seconds since Jan 1, 1970. E.g. <code> {@link java.io.File#lastModified()} / 1000 </code>
tikhomirov@287: 	 * @return int value representing time, in seconds, when file was last modified.
tikhomirov@287: 	 */
tikhomirov@287: 	int lastModified();
tikhomirov@287: 	
tikhomirov@287: 	/**
tikhomirov@287: 	 * @return file size
tikhomirov@287: 	 */
tikhomirov@287: 	long length();
tikhomirov@287: 
tikhomirov@287: 	/**
tikhomirov@287: 	 * Access file contents. Caller is responsible to close the channel.
tikhomirov@287: 	 * @return file reader object, never <code>null</code>
tikhomirov@287: 	 */
tikhomirov@287: 	ReadableByteChannel newInputChannel();
tikhomirov@287: }