/*
* $Id$
*
* Copyright (C) 2003-2014 JNode.org
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library 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 Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library; If not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
package org.jnode.command.file;
import java.io.File;
import java.io.PrintWriter;
import org.jnode.shell.AbstractCommand;
import org.jnode.shell.syntax.Argument;
import org.jnode.shell.syntax.FileArgument;
/**
* Touch a file; i.e. create it if it doesn't exist and change its
* modification timestamp if it does exist.
*
* @author Yves Galante (yves.galante@jmob.net)
* @author Andreas H\u00e4nel
*/
public class TouchCommand extends AbstractCommand {
private static final String help_file = "the file to touch";
private static final String help_super = "touch a file";
private static final String err_parent_dir = "Cannot create parent directories";
private static final String str_created = "File created";
private static final String err_file = "Cannot create file";
private final FileArgument argFile;
public TouchCommand() {
super(help_super);
argFile = new FileArgument("file", Argument.MANDATORY, help_file);
registerArguments(argFile);
}
public static void main(String[] args) throws Exception {
new TouchCommand().execute(args);
}
public void execute() throws Exception {
File file = argFile.getValue();
PrintWriter out = getOutput().getPrintWriter();
PrintWriter err = getError().getPrintWriter();
if (!file.exists()) {
File parentFile = file.getParentFile();
if (parentFile != null && !parentFile.exists()) {
// FIXME ... this is wrong. Touch should not do this.
if (!parentFile.mkdirs()) {
err.println(err_parent_dir);
exit(2);
}
}
if (file.createNewFile()) {
out.println(str_created);
} else {
err.println(err_file);
exit(1);
}
} else {
file.setLastModified(System.currentTimeMillis());
}
}
}