cp.java

/**
 * $Id: $
 * $Date: $
 *
 */

package org.xmlsh.posix.commands;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.List;

import org.xmlsh.core.InvalidArgumentException;
import org.xmlsh.core.Options;
import org.xmlsh.core.XCommand;
import org.xmlsh.core.XValue;
import org.xmlsh.util.Util;

public class cp extends XCommand {


	@Override
	public int run(List<XValue> args) throws Exception {

		Options opts = new Options( "f=force,r=recurese" );
		opts.parse(args);


		args = opts.getRemainingArgs();
		if( args.size() < 2 ){
			usage();
			return -1;
		}
		boolean bForce = opts.hasOpt("f");
		boolean bRecurse = opts.hasOpt("r");

		XValue last = args.remove(args.size()-1);
		File target = getFile( last );

		if( args.size() > 2 || target.isDirectory() ){

			if( ! target.isDirectory() )
				throw new InvalidArgumentException("Target is not a directory: " + target.getName() );
			copy( args , target , bForce , bRecurse );

		} else {

			copy( getFile(args.get(0)) , target , bForce, bRecurse);
		}

		return 0;
	}

	private void copy(File src, File dest, boolean force, boolean recurse) throws IOException, InvalidArgumentException {

		if( src.isDirectory() ){
			if( ! recurse ){
				this.printErr("Omitting directory: " + src.getPath());
				return ;
			}

			if( ! dest.exists() )
				dest.mkdirs();
			else 
				// Recurse by taking each file in src and copying to dest + src's basename
				if( ! dest.isDirectory() )
					throw new InvalidArgumentException("Target is not a directory: " + dest.getPath() );


			for( File s : src.listFiles() ){
				copy( s , new File(dest,s.getName()) , force , recurse );
			}
			return ;

		}



		// Try copy 
		InputStream in = null;
		OutputStream out = null;
		try {

			in = new FileInputStream(src);

			// Try deleting dest if we have to
			if( force && dest.exists() && ! dest.canWrite() )
				dest.delete();

			out = new FileOutputStream(dest);
			Util.copyStream( in , out );
		} finally {
			if( in != null ) in.close();
			if( out != null ) out.close();
		}
	}

	private void copy(List<XValue> files, File target, boolean force, boolean recurse) throws IOException, InvalidArgumentException {
		for( XValue f : files ){
			File src = getFile(f);
			if( src == null )
				throw new IOException("File not found: " + f.toString() );
			File dest = new File( target , src.getName() );
			copy( src , dest , force , recurse );

		}
	}



}



//
//
//Copyright (C) 2008-2014    David A. Lee.
//
//The contents of this file are subject to the "Simplified BSD License" (the "License");
//you may not use this file except in compliance with the License. You may obtain a copy of the
//License at http://www.opensource.org/licenses/bsd-license.php 
//
//Software distributed under the License is distributed on an "AS IS" basis,
//WITHOUT WARRANTY OF ANY KIND, either express or implied.
//See the License for the specific language governing rights and limitations under the License.
//
//The Original Code is: all this file.
//
//The Initial Developer of the Original Code is David A. Lee
//
//Portions created by (your name) are Copyright (C) (your legal entity). All Rights Reserved.
//
//Contributor(s): none.
//