/*
 *    CompileServer.java
 *    Copyright (C) 2001 Javier Lopez (jslopez@alum.mit.edu)
 *
 *    $Revision: 1.7 $
 *
 *    This program is free software; you can redistribute it and/or modify
 *    it under the terms of the GNU General Public License as published by
 *    the Free Software Foundation; either version 2 of the License, or
 *    (at your option) any later version.
 *
 *    This program 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 General Public License for more details.
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
 *    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

package jde.util;

import java.util.StringTokenizer;
import java.lang.reflect.Method;
import java.lang.reflect.InvocationTargetException;

/**
 * CompileServer.java provides an interface between 
 * the command line(or from Emacs) and the javac compiler.
 * @see com.sun.tools.javac.main
 * Calling the compile server instead of doing javac will 
 * avoid the start up time that occur with every incovation
 * of javac.exe
 *
 * Created: Sun Aug 12 21:56:50 2001
 *
 * @author <a href="mailto:jslopez@alum.mit.edu"></a>
 * @version 1.0
 * @since jde-2.2.8beta5
 */
public class CompileServer {
    private static Class compiler;
    static {
        try {
            compiler = Class.forName("com.sun.tools.javac.Main");
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        }
    }
    
    private static Method compile;
    static {
        try {
            if (compiler != null) {
                Class[] params = new Class[] {String[].class};
                compile = compiler.getMethod("compile", params);
            }
        } catch (NoSuchMethodException e) {
            e.printStackTrace();
        } catch (SecurityException e) {
            e.printStackTrace();
        }
    }
    
    /**
     *
     * @param args a <code>String[]</code> with
     * the arguments to passed to compiler.
     * @see com.sun.tools.javac.Main#compiler(String[] args)
     */
    public static void compile(String[] args) {
        try {
            if (compile != null) {
                Object[] arguments = new Object[] {args};
                System.out.println(compile.invoke(compiler.newInstance(), arguments));
            }
        } catch (InstantiationException e) {
            e.printStackTrace();
        } catch (InvocationTargetException e) {
            e.printStackTrace();
        } catch (IllegalAccessException e) {
            e.printStackTrace();
        } catch (IllegalArgumentException e) {
            e.printStackTrace();
        }
    }

    /**
     *
     * @param commands a <code>String[]</code> with
     * the arguments to passed to compiler.
     * @see com.sun.tools.javac.Main#compiler(String[] args)
     */
    public static void compile(String commands) {
        //Parsing commands
        StringTokenizer st = new StringTokenizer(commands);
        String[] args = new String[st.countTokens()];
        
        for (int i = 0; st.hasMoreTokens(); i++) { //Fetching the array 
            args[i] = st.nextToken();
        }
        compile(args); 
    }

    public static void main (String[] args) { 
        CompileServer.compile("CompileServer.java");
    }
}// CompileServer

/*
 * $Log: CompileServer.java,v $
 * Revision 1.7  2001/11/21 15:45:34  jslopez
 * Fixes causing a compilation error when using
 * jdk1.3
 *
 * Revision 1.6  2001/11/21 07:07:00  paulk
 * Fixed typo
 *
 * Revision 1.5  2001/11/18 03:08:17  jslopez
 * Modifies the code to use reflection to
 * get a handle on the Main compiler. This
 * will avoid IncompatibleClassChangeError.
 *
 * Revision 1.4  2001/11/12 13:06:45  jslopez
 * Removing control characters from the end of the lines.
 *
 * Revision 1.3  2001/10/17 04:15:30  paulk
 * Added change log at the end of the file.
 *
 *
 */

// End of CompileServer.java