/*
 * @(#)$Id$
 *
 * 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 acknowledgment:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowledgment may appear in the software itself,
 *    if and wherever such third-party acknowledgments normally appear.
 *
 * 4. The names "Xalan" 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 name, without prior written
 *    permission of the Apache Software Foundation.
 *
 * 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 and was
 * originally based on software copyright (c) 2001, Sun
 * Microsystems., http://www.sun.com.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 *
 * @author G. Todd Miller 
 *
 */
package org.apache.xalan.xsltc.trax;

import javax.xml.transform.Templates;
import javax.xml.transform.Source; 
import javax.xml.transform.stream.StreamSource; 
import javax.xml.transform.Transformer; 
import javax.xml.transform.TransformerConfigurationException; 
import javax.xml.transform.sax.SAXTransformerFactory; 

import org.apache.xalan.xsltc.runtime.AbstractTranslet;
import org.apache.xalan.xsltc.compiler.XSLTC;
import org.apache.xalan.xsltc.compiler.CompilerException;
import org.apache.xalan.xsltc.compiler.util.Util;
import org.apache.xalan.xsltc.Translet;
import java.util.Properties;

import java.io.File;
import java.io.InputStream;
import java.net.URL;
import java.net.MalformedURLException;

/**
 * Implementation of a JAXP1.1 Templates object for Translets.
 */ 
public class TransletTemplates implements Templates {
    private Source _stylesheet;

    public TransletTemplates(Source stylesheet) {
	_stylesheet = stylesheet;
    }

    public Transformer newTransformer() throws 
	TransformerConfigurationException
    {
        XSLTC xsltc = new XSLTC();
        xsltc.init();

        // check if destination has been set with system property
        String transletDestDir = System.getProperty("transletPool");
        if (transletDestDir != null) {
            try {
                xsltc.setDestDirectory(transletDestDir);
            } catch(CompilerException e)  {
                throw new TransformerConfigurationException(
                    "System property 'transletPool' was set to  " +
                    transletDestDir + ", " + e );
            }
        }


	// compile stylesheet
	boolean isSuccessful = true;
	StreamSource strmsrc = (StreamSource)_stylesheet;
	InputStream inputStream = strmsrc.getInputStream();
	String stylesheetName = _stylesheet.getSystemId();
	String transletName = "no_name";
	if (inputStream != null) {
	    isSuccessful = xsltc.compile(inputStream, transletName);
	} else if (stylesheetName != null ){
/******************
	    int index = stylesheetName.indexOf('.');
	    if (index > 0) { 
                transletName = stylesheetName.substring(0,index);
            }
            else {
                // indexOf returns -1 if '.' is not present
                transletName = stylesheetName;
            }   
********************/
	    transletName = Util.toJavaName(Util.noExtName(
                Util.baseName(stylesheetName)));
            try {
                if (stylesheetName.startsWith("file:/")) {
                    isSuccessful = xsltc.compile(new URL(stylesheetName));
                } else {
                    File file = new File(stylesheetName);
                    URL url = file.toURL();
                    isSuccessful = xsltc.compile(url);
                }
            } catch (MalformedURLException e) {
                throw new TransformerConfigurationException(
                    "URL for stylesheet '" + stylesheetName +
                    "' can not be formed.");
	    }
        } else {
	   throw new TransformerConfigurationException(
		"Stylesheet must have a system id or be an InputStream."); 
	}

        if (!isSuccessful) {
            throw new TransformerConfigurationException(
                "Compilation of stylesheet '" + stylesheetName + "' failed.");
        }

        Translet translet = null;
        try {
            Class clazz = Class.forName(transletName);
            translet = (Translet)clazz.newInstance();
            ((AbstractTranslet)translet).setTransletName(transletName);
        } catch (ClassNotFoundException e) {
            throw new TransformerConfigurationException(
                "Translet class '" + transletName + "' not found.");
        } catch (InstantiationException e) {
            throw new TransformerConfigurationException(
                "Translet class '" + transletName +
                "' could not be instantiated");
        } catch (IllegalAccessException  e) {
            throw new TransformerConfigurationException(
                "Translet class '" + transletName + "' could not be accessed.");
        }
        return (AbstractTranslet)translet;
    }

    public Properties getOutputProperties() { 
	/*TBD*/ 
	return new Properties(); 
    }

}