/**
 * Redistribution and use of this software and associated documentation ("Software"), with or
 * without modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain copyright statements and notices. Redistributions
 * must also contain a copy of this document.
 *
 * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
 * conditions and the following disclaimer in the documentation and/or other materials provided with
 * the distribution.
 *
 * 3. The name "Exolab" must not be used to endorse or promote products derived from this Software
 * without prior written permission of Intalio, Inc. For written permission, please contact
 * info@exolab.org.
 *
 * 4. Products derived from this Software may not be called "Exolab" nor may "Exolab" appear in
 * their names without prior written permission of Intalio, Inc. Exolab is a registered trademark of
 * Intalio, Inc.
 *
 * 5. Due credit should be given to the Exolab Project (http://www.exolab.org/).
 *
 * THIS SOFTWARE IS PROVIDED BY INTALIO, INC. AND CONTRIBUTORS ``AS IS'' AND ANY EXPRESSED OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
 * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL INTALIO, INC. OR ITS
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
 * WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * Copyright 1999 (C) Intalio, Inc. All Rights Reserved.
 *
 * $Id$
 */


package org.exolab.castor.dsml.mozilla;


import java.util.Enumeration;
import java.util.Vector;
import org.xml.sax.SAXException;
import org.xml.sax.AttributeList;
import org.xml.sax.HandlerBase;
import netscape.ldap.LDAPEntry;
import netscape.ldap.LDAPAttribute;
import netscape.ldap.LDAPAttributeSet;

import org.castor.core.util.Base64Decoder;
import org.castor.core.util.Messages;
import org.exolab.castor.dsml.XML;


/**
 *
 *
 * @author <a href="mailto:arkin@intalio.com">Assaf Arkin</a>
 * @version $Revision$ $Date: 2006-04-10 16:39:24 -0600 (Mon, 10 Apr 2006) $
 */
class MozillaEntryConsumer extends HandlerBase {


  private String _entryDN;


  private LDAPAttributeSet _attrSet;


  private LDAPAttribute _attr;


  private StringBuffer _value;


  private Base64Decoder _decoder;


  private Vector _entries = new Vector();


  MozillaEntryConsumer() {}


  public Enumeration getEntries() {
    return _entries.elements();
  }


  public void startElement(String tagName, AttributeList attr) throws SAXException {
    if (tagName.equals(XML.Entries.ELEMENT)) {
      // Do nothing
    } else if (tagName.equals(XML.Entries.Elements.ENTRY)) {
      if (_attrSet != null)
        throw new SAXException(Messages.format("dsml.openingTagNotRecognized", tagName));
      _attrSet = new LDAPAttributeSet();
      _entryDN = attr.getValue(XML.Entries.Attributes.DN);
    } else if (tagName.equals(XML.Entries.Elements.OBJECT_CLASS)) {
      if (_attrSet == null || _attr != null)
        throw new SAXException(Messages.format("dsml.openingTagNotRecognized", tagName));
      _attr = new LDAPAttribute("objectclass");
    } else if (tagName.equals(XML.Entries.Elements.ATTRIBUTE)) {
      if (_attrSet == null || _attr != null)
        throw new SAXException(Messages.format("dsml.openingTagNotRecognized", tagName));
      _attr = new LDAPAttribute(attr.getValue(XML.Entries.Attributes.NAME));
    } else if (tagName.equals(XML.Entries.Elements.VALUE)
        || tagName.equals(XML.Entries.Elements.OBJECT_CLASS_VALUE)) {
      if (_attrSet == null || _attr == null || _value != null)
        throw new SAXException(Messages.format("dsml.openingTagNotRecognized", tagName));
      if (XML.Entries.Attributes.Encodings.BASE64
          .equals(attr.getValue(XML.Entries.Attributes.ENCODING))) {
        _decoder = new Base64Decoder();
      } else {
        _value = new StringBuffer();
      }
    } else {
      throw new SAXException(Messages.format("dsml.openingTagNotRecognized", tagName));
    }
  }


  public void endElement(String tagName) throws SAXException {
    if (tagName.equals(XML.Entries.ELEMENT)) {
      if (_attrSet != null)
        throw new SAXException(Messages.format("dsml.closingTagNotRecognized", tagName));
    } else if (tagName.equals(XML.Entries.Elements.ENTRY)) {
      if (_attrSet == null || _attr != null)
        throw new SAXException(Messages.format("dsml.closingTagNotRecognized", tagName));
      _entries.add(new LDAPEntry(_entryDN, _attrSet));
      _entryDN = null;
      _attrSet = null;
    } else if (tagName.equals(XML.Entries.Elements.OBJECT_CLASS)
        || tagName.equals(XML.Entries.Elements.ATTRIBUTE)) {
      if (_attrSet == null || _attr == null || _value != null)
        throw new SAXException(Messages.format("dsml.closingTagNotRecognized", tagName));
      _attrSet.add(_attr);
      _attr = null;
    } else if (tagName.equals(XML.Entries.Elements.VALUE)
        || tagName.equals(XML.Entries.Elements.OBJECT_CLASS_VALUE)) {
      if (_attrSet == null || _attr == null || (_value == null && _decoder == null))
        throw new SAXException(Messages.format("dsml.closingTagNotRecognized", tagName));
      if (_decoder != null) {
        _attr.addValue(_decoder.getByteArray());
        _decoder = null;
      } else {
        _attr.addValue(_value.toString());
        _value = null;
      }
    } else {
      throw new SAXException(Messages.format("dsml.closingTagNotRecognized", tagName));
    }
  }

  public void characters(final char[] chars, final int offset, final int length) {
    if (_decoder != null) {
      _decoder.translate(new String(chars, offset, length));
    } else if (_value != null) {
      _value.append(chars, offset, length);
    }
  }
}
