WebContextServlet.java

  /*
   * This program is free software; you can redistribute it and/or modify it under the 
   * terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software 
   * Foundation.
   *
   * You should have received a copy of the GNU Lesser General Public License along with this 
   * program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html 
   * or from the Free Software Foundation, Inc., 
   * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
   *
   * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; 
   * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
   * See the GNU Lesser General Public License for more details.
   *
   * Copyright 2005 - 2009 Pentaho Corporation.  All rights reserved.
   *
   *
   * @author Michael D'Amour
   * 
   */
package org.pentaho.platform.web.servlet;


  import java.io.IOException;
import java.io.OutputStream;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.pentaho.platform.engine.core.system.PentahoSystem;

  public class WebContextServlet extends HttpServlet {

    protected void doGet(final HttpServletRequest arg0, final HttpServletResponse arg1) throws ServletException, IOException {
      doPost(arg0, arg1);
    }

    protected void doPost(final HttpServletRequest request, final HttpServletResponse response) throws ServletException, IOException {
      response.setContentType("text/javascript");
      OutputStream out = response.getOutputStream();
      // split out a base url, guaranteed to have a trailing slash
      String baseURL = PentahoSystem.getApplicationContext().getBaseUrl();
      if (!baseURL.endsWith("/")) {
        baseURL += "/";
      }
      String webContext = "var WEB_CONTEXT_BASE = '" + baseURL + "';";
      out.write(webContext.getBytes());
      out.close();
    }
  }