/*
    * This file is part of ***  M y C o R e  ***
    * See http://www.mycore.de/ for details.
    *
    * MyCoRe is free software: you can redistribute it and/or modify
    * it under the terms of the GNU General Public License as published by
    * the Free Software Foundation, either version 3 of the License, or
    * (at your option) any later version.
    *
   * MyCoRe 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 General Public License for more details.
   *
   * You should have received a copy of the GNU General Public License
   * along with MyCoRe.  If not, see <http://www.gnu.org/licenses/>.
   */
  
  package org.mycore.common.content;
  
  import java.io.IOException;
  import java.io.InputStream;
  import java.io.UnsupportedEncodingException;
  
  import javax.xml.transform.Source;
  import javax.xml.transform.sax.SAXSource;
  
  import org.jdom2.Document;
  import org.jdom2.JDOMException;
  import org.jdom2.input.sax.SAXHandler;
  import org.xml.sax.InputSource;
  import org.xml.sax.SAXException;
  import org.xml.sax.XMLReader;
  
  /**
   * @author Thomas Scheffler (yagee)
   *
   */
  public class MCRSAXContent extends MCRXMLContent {
  
      private XMLReader xmlReader;
  
      private InputSource inputSource;
  
      public MCRSAXContent(XMLReader xmlReader, InputSource inputSource) {
          super();
          this.xmlReader = xmlReader;
          this.inputSource = inputSource;
          setSystemId(inputSource.getSystemId());
      }
  
      /* (non-Javadoc)
       * @see org.mycore.common.content.MCRContent#getInputStream()
       */
      @Override
      public InputStream getInputStream() throws IOException {
          return inputSource.getByteStream();
      }
  
      @Override
      public Source getSource() throws IOException {
          return new SAXSource(this.xmlReader, this.inputSource);
      }
  
      @Override
      public MCRContent ensureXML() {
          return this;
      }
  
      @Override
      public Document asXML() throws JDOMException, IOException, SAXException {
          SAXHandler jdomContentHandler = new SAXHandler();
          xmlReader.setContentHandler(jdomContentHandler);
          xmlReader.parse(inputSource);
          return jdomContentHandler.getDocument();
      }
  
      @Override
      public void setEncoding(String encoding) throws UnsupportedEncodingException {
          //defined by inputSource
      }
  
      @Override
      public String getEncoding() {
          return inputSource.getEncoding();
      }
  
  }