antliscence/src/main/org/apache/tools/ant/taskdefs/Jikes.java

/*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2000,2002 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;

import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Random;
import org.apache.tools.ant.BuildException;
import org.apache.tools.ant.Project;

/**
 * Encapsulates a Jikes compiler, by directly executing an external
 * process.
 *
 * <p><strong>As of Ant 1.2, this class is considered to be dead code
 * by the Ant developers and is unmaintained.  Don't use
 * it.</strong></p>
 *
 * @author skanthak@muehlheim.de
 * @deprecated merged into the class Javac.
 */
public class Jikes {

    protected JikesOutputParser jop;
    protected String command;
    protected Project project;

    /**
     * Constructs a new Jikes obect.
     * @param jop - Parser to send jike's output to
     * @param command - name of jikes executeable
     */
    protected Jikes(JikesOutputParser jop, String command, Project project) {
        super();

        System.err.println("As of Ant 1.2 released in October 2000, " 
            + "the Jikes class");
        System.err.println("is considered to be dead code by the Ant " 
            + "developers and is unmaintained.");
        System.err.println("Don\'t use it!");

        this.jop = jop;
        this.command = command;
        this.project = project;
    }

    /**
     * Do the compile with the specified arguments.
     * @param args - arguments to pass to process on command line
     */
    protected void compile(String[] args) {
        String[] commandArray = null;
        File tmpFile = null;

        try {
            String myos = System.getProperty("os.name");

            // Windows has a 32k limit on total arg size, so
            // create a temporary file to store all the arguments

            // There have been reports that 300 files could be compiled
            // so 250 is a conservative approach
            if (myos.toLowerCase().indexOf("windows") >= 0 
                && args.length > 250) {
                PrintWriter out = null;
                try {
                    tmpFile = new File("jikes" + (new Random(System.currentTimeMillis())).nextLong());
                    out = new PrintWriter(new FileWriter(tmpFile));
                    for (int i = 0; i < args.length; i++) {
                        out.println(args[i]);
                    }
                    out.flush();
                    commandArray = new String[] { command, 
                                                  "@" + tmpFile.getAbsolutePath()};
                } catch (IOException e) {
                    throw new BuildException("Error creating temporary file", 
                                             e);
                } finally {
                    if (out != null) {
                        try {out.close();} catch (Throwable t) {}
                    }
                }
            } else {
                commandArray = new String[args.length + 1];
                commandArray[0] = command;
                System.arraycopy(args, 0, commandArray, 1, args.length);
            }
            
            // We assume, that everything jikes writes goes to
            // standard output, not to standard error. The option
            // -Xstdout that is given to Jikes in Javac.doJikesCompile()
            // should guarantee this. At least I hope so. :)
            try {
                Execute exe = new Execute(jop);
                exe.setAntRun(project);
                exe.setWorkingDirectory(project.getBaseDir());
                exe.setCommandline(commandArray);
                exe.execute();
            } catch (IOException e) {
                throw new BuildException("Error running Jikes compiler", e);
            }
        } finally {
            if (tmpFile != null) {
                tmpFile.delete();
            }
        }
    }
}