package fr.in2p3.jsaga.helpers.xslt;
   
   import fr.in2p3.jsaga.Base;
   import fr.in2p3.jsaga.engine.descriptors.AdaptorDescriptors;
   
   import javax.xml.transform.*;
   import javax.xml.transform.stream.StreamSource;
   import java.io.*;
   
  /* ***************************************************
  * *** Centre de Calcul de l'IN2P3 - Lyon (France) ***
  * ***             http://cc.in2p3.fr/             ***
  * ***************************************************
  * File:   TransformerURIResolver
  * Author: Sylvain Reynaud (sreynaud@in2p3.fr)
  * Date:   28 juin 2007
  * ***************************************************
  * Description:                                      */
  /**
   *
   */
  public class TransformerURIResolver implements URIResolver {
      public Source resolve(String href, String base) throws TransformerException {
          if ("SystemProperties.xml".equals(href)) {
              ByteArrayOutputStream xml = new ByteArrayOutputStream();
              try {
                  System.getProperties().storeToXML(xml, "System properties");
                  BufferedReader reader = new BufferedReader(new StringReader(xml.toString()));
                  reader.readLine();
                  reader.readLine();  // remove DTD (prevent from raising FileNotFoundException)
                  return new StreamSource(reader);
              } catch (IOException e) {
                  throw new TransformerException(e);
              }
          } else if ("AdaptorsDescriptor.xml".equals(href)) {
              try {
                  byte[] xml = AdaptorDescriptors.getInstance().toByteArray();
                  return new StreamSource(new ByteArrayInputStream(xml));
              } catch (Exception e) {
                  throw new TransformerException(e);
              }
          } else if (href.startsWith("var/")) {
              return new StreamSource(new File(Base.JSAGA_VAR, href.substring(4)));
          } else {
              return new StreamSource(new File(Base.JSAGA_HOME, href));
          }
      }
  }