ejtools-cvs

[Laurent E. <let...@us...>]

Update of /cvsroot/ejtools/libraries/common/src/main/net/sourceforge/ejtools/servlet/http
In directory usw-pr-cvs1:/tmp/cvs-serv20740a/http

Added Files:
	CharResponseWrapper.java StringResponseWrapper.java 
	XSLFilter.java 
Log Message:
Initial Import

--- NEW FILE: CharResponseWrapper.java ---
/*
 *  EJTools, the Enterprise Java Tools
 *
 *  Distributable under LGPL license.
 *  See terms of license at gnu.org.
 */
package net.sourceforge.ejtools.servlet.http;

import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;

/**
 *  Description of the Interface
 *
 * @author     laurent
 * @created    11 avril 2002
 */
public class CharResponseWrapper extends HttpServletResponseWrapper
{
	protected CharArrayWriter output = null;

	public CharResponseWrapper(HttpServletResponse response)
	{
		super(response);
		output = new CharArrayWriter();
	}

	public String toString()
	{
		return output.toString();
	}

	public PrintWriter getWriter()
	{
		return new PrintWriter(output);
	}
}

--- NEW FILE: StringResponseWrapper.java ---
/*
 *  EJTools, the Enterprise Java Tools
 *
 *  Distributable under LGPL license.
 *  See terms of license at gnu.org.
 */
package net.sourceforge.ejtools.servlet.http;

import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;

/**
 *  Description of the Interface
 *
 * @author     laurent
 * @created    11 avril 2002
 */
public class StringResponseWrapper extends HttpServletResponseWrapper
{
	protected StringWriter output = null;

	public StringResponseWrapper(HttpServletResponse response)
	{
		super(response);
		output = new StringWriter();
	}

	public String toString()
	{
		return output.toString();
	}

	public PrintWriter getWriter()
	{
		return new PrintWriter(output);
	}
}

--- NEW FILE: XSLFilter.java ---
/*
 *  EJTools, the Enterprise Java Tools
 *
 *  Distributable under LGPL license.
 *  See terms of license at gnu.org.
 */
package net.sourceforge.ejtools.servlet.http;

import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import javax.xml.transform.*;
import javax.xml.transform.stream.*;

/**
 *  Description of the Interface
 *
 * @author     laurent
 * @created    11 avril 2002
 */
public class XSLFilter implements Filter
{
	protected Transformer transformer = null;
	protected String contentType = null;
	protected FilterConfig config = null;

	public void init(FilterConfig config) throws ServletException
	{
		this.config = config;

		System.out.println("Acquiring parameters...");
		this.contentType = config.getInitParameter("mime-type");
		String styleSheet = config.getInitParameter("stylesheet");
		System.out.println("Acquiring styletsheet " + styleSheet );

		String stylePath = config.getServletContext().getRealPath(styleSheet);

		try
		{
			System.out.println("Compiling styletsheet " + stylePath);

			TransformerFactory tFactory = TransformerFactory.newInstance();
			transformer = tFactory.newTransformer(new StreamSource(stylePath));
		}
		catch (Exception e)
		{
			transformer = null;
			throw new ServletException(e.toString());
		}
	}

	public void destroy()
	{
		this.config = null;
	}

	public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException
	{
		StringResponseWrapper wrapper = new StringResponseWrapper((HttpServletResponse) response);
		chain.doFilter(request, wrapper);

		response.setContentType(contentType);
		PrintWriter out = response.getWriter();
		StringReader reader = new StringReader(wrapper.toString());
		Source source = new StreamSource(reader);

		try
		{
			StringWriter writer = new StringWriter();
			StreamResult result = new StreamResult(writer);

			transformer.transform(source, result);

			response.setContentLength(writer.toString().length());
			out.println(writer.toString());
		}
		catch (Exception e)
		{
			out.println(e.toString());
			out.println(wrapper.toString());
		}
	}
}