content: /**
   * Copyright 2000-2006 DFKI GmbH.
   * All Rights Reserved.  Use is subject to license terms.
   * <p/>
   * This file is part of MARY TTS.
   * <p/>
   * MARY TTS is free software: you can redistribute it and/or modify
   * it under the terms of the GNU Lesser General Public License as published by
   * the Free Software Foundation, version 3 of the License.
   * <p/>
   * 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.
   * <p/>
   * You should have received a copy of the GNU Lesser General Public License
   * along with this program.  If not, see <http://www.gnu.org/licenses/>.
   */
  package marytts.server;
  
  import java.io.File;
  
  import marytts.datatypes.MaryXML;
  import mf.javax.xml.parsers.DocumentBuilderFactory;
  import mf.org.w3c.dom.traversal.DocumentTraversal;
  
  
  /**
   * @author Marc Schr&ouml;der
   */
  public class EnvironmentChecks {
  
      /**
       * Check central requirements in the runtime environment of the system.
       *
       * @throws Error if any requirement is violated.
       */
      public static void check() {
          // Java version
          String javaVersion = System.getProperty("java.version");
          if (Float.parseFloat(javaVersion.substring(0, 3)) < 1.499) {
              // 1.499 instead of 1.5 because of rounding error
              throw new Error("Wrong java version: Required 1.5, found " + javaVersion);
          }
          // XML code
          if (!(MaryXML.newDocument() instanceof DocumentTraversal)) {
              throw new Error("XML handling code " +
                      DocumentBuilderFactory.newInstance().getClass() +
                      " does not support DocumentTraversal.\n" +
                      "Please update your java XML handling code as described in " +
                      MaryProperties.getProperty("mary.base") + File.separator + "README.");
          }
  
          // Try to find a suitable XSLT transformer
          /*
          tFactory = javax.xml.transform.TransformerFactory.newInstance();
          if (tFactory instanceof org.apache.xalan.processor.TransformerFactoryImpl) {
              Hashtable xalanEnv = (new org.apache.xalan.xslt.EnvironmentCheck()).getEnvironmentHash();
              String xalan2Version = (String) xalanEnv.get("version.xalan2x");
              if (xalan2Version == null || xalan2Version.equals(""))
                  xalan2Version = (String) xalanEnv.get("version.xalan2");
              if (xalan2Version != null && !xalan2Version.equals(""))
                  System.err.println("Using " + xalan2Version);
          } else {
              System.err.println("Using XSL processor " + tFactory.getClass().getName());
          }
          */
      }
  }
  
  