/*
 *                 Sun Public License Notice
 * 
 * The contents of this file are subject to the Sun Public License
 * Version 1.0 (the "License"). You may not use this file except in
 * compliance with the License. A copy of the License is available at
 * http://www.sun.com/
 * 
 * The Original Code is NetBeans. The Initial Developer of the Original
 * Code is Sun Microsystems, Inc. Portions Copyright 1997-2004 Sun
 * Microsystems, Inc. All Rights Reserved.
 */

package org.netbeans.modules.vcs.profiles.commands;

import java.util.Hashtable;
import java.util.regex.Pattern;

import org.netbeans.modules.vcscore.cmdline.ExecuteCommand;
import org.netbeans.modules.vcscore.cmdline.VcsAdditionalCommand;
import org.netbeans.modules.vcscore.cmdline.exec.ExternalCommand;
import org.netbeans.modules.vcscore.commands.CommandDataOutputListener;
import org.netbeans.modules.vcscore.commands.CommandOutputListener;

/**
 * A simple echo command, which prints it's arguments to standard output
 *
 * @author  Martin Entlicher
 */
public class Echo implements VcsAdditionalCommand {
    
    /** Creates a new instance of Echo */
    public Echo() {
    }
    
    public boolean exec(Hashtable vars, String[] args,
                        CommandOutputListener stdoutListener,
                        CommandOutputListener stderrListener,
                        CommandDataOutputListener stdoutDataListener, String dataRegex,
                        CommandDataOutputListener stderrDataListener, String errorRegex) {
        StringBuffer out = new StringBuffer();
        for (int i = 0; i < args.length; i++) {
            out.append(args[i]);
        }
        stdoutListener.outputLine(out.toString());
        if (dataRegex == null) {
            dataRegex = ExecuteCommand.DEFAULT_REGEX;
        }
        String[] sa = ExternalCommand.matchToStringArray(Pattern.compile(dataRegex), out.toString());
        if (sa != null && sa.length > 0) stdoutDataListener.outputData(sa);
        return true;
    }
    
}