/*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2001 The Apache Software Foundation.  All rights
 * reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. The end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Ant", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Group.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

package org.apache.tools.ant.taskdefs.compilers;

import org.apache.tools.ant.BuildException;
import org.apache.tools.ant.Project;
import org.apache.tools.ant.types.*;

/**
 * Performs a compile using the Javac externally.
 *
 * This is primarily a cut-and-paste of Jikes.java
 *
 * @author Brian Deitte
 */
public class JavacExternal extends DefaultCompilerAdapter {

    /**
     * Performs a compile using the Javac externally.
     *
     * @author skanthak@muehlheim.de
     */
    public boolean execute() throws BuildException {
        attributes.log("Using external javac compiler", Project.MSG_VERBOSE);

        Path classpath = new Path(project);

        // Javac < 1.2 doesn't support an extension dir (-extdir)
        // so we'll emulate it for compatibility and convenience.
        addExtdirsToClasspath(classpath);

        if ( (bootclasspath == null) || (bootclasspath.size() == 0) ) {
            // no bootclasspath, therefore, get one from the java runtime
            includeJavaRuntime = true;
        } else {
            // there is a bootclasspath stated.  By default, the
            // includeJavaRuntime is false.  If the user has stated a
            // bootclasspath and said to include the java runtime, it's on
            // their head!
        }
        classpath.append(getCompileClasspath());

        // if the user has set JAVACPATH we should add the contents as well
	// String javacPath = System.getProperty("javac.class.path");
        //if (javacPath != null) {
        //    classpath.append(new Path(project, javacPath));
        //}
        
        Commandline cmd = new Commandline();
        cmd.setExecutable("javac");

	if (bootclasspath != null) {
            cmd.createArgument().setValue("-bootclasspath");
            cmd.createArgument().setValue(bootclasspath.toString());
	}

	if (src != null) {
            cmd.createArgument().setValue("-sourcepath");
            cmd.createArgument().setValue(src.toString());
	}
	    
        if (deprecation == true)
            cmd.createArgument().setValue("-deprecation");

        if (destDir != null) {
            cmd.createArgument().setValue("-d");
            cmd.createArgument().setFile(destDir);
        }
        
        cmd.createArgument().setValue("-classpath");
        cmd.createArgument().setPath(classpath);

        if (encoding != null) {
            cmd.createArgument().setValue("-encoding");
            cmd.createArgument().setValue(encoding);
        }
        if (debug) {
            cmd.createArgument().setValue("-g");
        }
        if (optimize) {
            cmd.createArgument().setValue("-O");
        }
        if (verbose) {
            cmd.createArgument().setValue("-verbose");
        }

        int firstFileName = cmd.size();
        logAndAddFilesToCompile(cmd);

        return executeExternalCompile(cmd.getCommandline(), firstFileName) == 0;
    }
}