/*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 1999 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", "Tomcat", 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.optional;

import java.io.*;
import java.net.*;
import java.lang.reflect.*;

import org.apache.tools.ant.*;

/**
 * Uses JSPC on a file
 * @author Joe Walker
 */
public class JspcTask extends Task
{
    public void setSrcdir(String srcdir)
    {
        this.srcdir = srcdir;
    }

    public void setDestdir(String destdir)
    {
        this.destdir = destdir;
    }

    public void setPackage(String pkg)
    {
        this.pkg = pkg;
    }

    public void setUriroot(String uriroot)
    {
        this.uriroot = uriroot;
    }

    public void setTomcatdir(String tomcat)
    {
        this.tomcat = tomcat;
    }

    public void setFork(boolean fork)
    {
        this.fork = fork;
    }

    public void execute() throws BuildException
    {
        if (srcdir == null)
        {
            throw new BuildException("srcdir attribute must be set");
        }
        if (destdir == null)
        {
            throw new BuildException("destdir attribute must be set");
        }
        if (uriroot == null)
        {
            throw new BuildException("uriroot attribute must be set");
        }
        if (tomcat == null)
        {
            throw new BuildException("tomcat attribute must be set");
        }
        if (pkg == null)
        {
            throw new BuildException("pkg attribute must be set");
        }

        try
        {
            if (fork)
            {
                String cmd = tomcat+"/bin/jspc.sh -uriroot "+uriroot+" -d "+destdir+" -p "+pkg+" -webapp "+srcdir;
                log("executing: "+cmd);
                Process proc = Runtime.getRuntime().exec(cmd);
                BufferedReader in = new BufferedReader(new InputStreamReader(proc.getInputStream()));

                while (true)
                {
                    String line = in.readLine();
                    if (line == null)
                        break;

                    log(line);
                }

                int exit = proc.exitValue();
                log("return: "+exit);
            }
            else
            {
                // It would be nice to be able to simply do:
                // org.apache.jasper.JspC.main(args);
                // However that means that there is a compile time
                // dependancy on jasper which is no good if we want to also
                // compile jserv stuff (which is probably why you want jspc
                // anyway

                // So we use reflection to get rid of the compile time dep.
                String[] args = { "-uriroot", uriroot, "-d", destdir, "-p", pkg, "-webapp", srcdir };
                Class jspc_class = Class.forName("");
                Object jspc = jspc_class.newInstance();
                Method main = jspc_class.getMethod("main", new Class[] { String[].class });
                main.invoke(jspc, new Object[] { args });

                // Oh and this bit isn't tested at all ...
            }
        }
        catch(Exception ex)
        {
            throw new BuildException("error during FTP transfer: " + ex);
        }
    }

    private String srcdir;
    private String destdir;
    private String pkg;
    private String uriroot;
    private String tomcat;
    private boolean fork = false;
}