IncludeInstructionsHandler.java

package org.tigris.juxy.verifier;

import org.tigris.juxy.XSLTKeys;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.DefaultHandler;

import java.util.HashSet;
import java.util.Set;

/**
 */
public class IncludeInstructionsHandler extends DefaultHandler {
  private Set hrefs = new HashSet();

  public void startElement(String uri, String localName, String qName, Attributes attributes) throws SAXException {
    super.startElement(uri, localName, qName, attributes);
    if (isStopElement(uri, localName))
      throw new ParseStoppedException(null);

    if (isIncludeInstruction(uri, localName)) {
      String href = attributes.getValue("href");
      if (href != null)
        hrefs.add(href);
    }
  }

  public Set getHrefs() {
    return hrefs;
  }

  public void reset() {
    hrefs.clear();
  }

  private boolean isIncludeInstruction(String uri, String localName) {
    return XSLTKeys.XSLT_NS.equals(uri) && INCLUDE_INSTRUCTIONS.contains(localName);
  }

  private boolean isStopElement(String uri, String localName) {
    return XSLTKeys.XSLT_NS.equals(uri) && STOP_ELEMENTS.contains(localName);
  }


  private static Set INCLUDE_INSTRUCTIONS = new HashSet();

  static {
    INCLUDE_INSTRUCTIONS.add("include");
    INCLUDE_INSTRUCTIONS.add("import");
  }

  private static Set STOP_ELEMENTS = new HashSet();

  static {
    STOP_ELEMENTS.add("template");
  }
}