package org.webslinger.types;

 import java.io.InputStream;

 import java.io.IOException;

 import java.io.StringWriter;

 import java.net.URL;

 import java.util.Map;

 import javax.servlet.RequestDispatcher;

 import javax.servlet.ServletException;

 import javax.servlet.ServletRequest;

 import javax.servlet.ServletRequestWrapper;

 import javax.servlet.ServletResponse;

 import javax.servlet.http.HttpServletRequest;

 import javax.servlet.http.HttpServletResponse;

 import javax.servlet.http.HttpServletRequestWrapper;

 import javax.servlet.http.HttpServletResponseWrapper;

 import org.webslinger.PathContext;

 import org.webslinger.TypeHandler;

 import org.webslinger.Webslinger;

 public class servletMapping extends TypeHandler {

     protected Object setAndGet(ServletRequest request, String name, Object newValue) {

         Object oldValue = request.getAttribute(name);

         request.setAttribute(name, newValue);

         return oldValue;

     }

     public Object run(Webslinger webslinger) throws IOException, ServletException {

         ServletRequest request = webslinger.getRequest();

         ServletResponse response = webslinger.getResponse();

         //System.err.println("servletMapping.run(" + pc + ", " + request + ", " + response + ")");

         //request = new UpConvertingHttpServletRequest(request, pc);

         //System.err.println("pathInfo[" + request.getPathInfo() + "]");

         String servletName = (String) webslinger.getFileAttribute("servlet-name");

         //System.err.println("servletName[" + servletName + "]");

         RequestDispatcher dispatcher = getContext().getNamedDispatcher(servletName);

         if (dispatcher == null) throw new ServletException("Couldn't load servlet(" + servletName + ") on resource " + webslinger);

         //request = getContext().makeWebslinger(pc, getContext().makeHttp(pc, request, response, true), response);

         //request = getContext().makeHttp(webslinger.getPathContext(), request, response, true);

         Object servletPath = setAndGet(request, "javax.servlet.include.servlet_path", webslinger.getCurrentFile().getName().getPath());

         Object queryString = setAndGet(request, "javax.servlet.include.query_string", null);

         Object pathInfo = setAndGet(request, "javax.servlet.include.path_info", null);

         Object oldWebslinger = setAndGet(request, "org.webslinger.Webslinger", webslinger);

         try {

             dispatcher.include(request, response);

         } finally {

             request.setAttribute("javax.servlet.include.servlet_path", servletPath);

             request.setAttribute("javax.servlet.include.query_string", queryString);

             request.setAttribute("javax.servlet.include.path_info", pathInfo);

             request.setAttribute("org.webslinger.Webslinger", oldWebslinger);

         }

         return null;

     }

 }