/*
 * XMLName.java
 * Copyright (C) 2004 The Free Software Foundation
 * 
 * This file is part of GNU JAXP, a library.
 * 
 * GNU JAXP 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 2 of the License, or
 * (at your option) any later version.
 * 
 * GNU JAXP 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 this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * As a special exception, if you link this library with other files to
 * produce an executable, this library does not by itself cause the
 * resulting executable to be covered by the GNU General Public License.
 * This exception does not however invalidate any other reasons why the
 * executable file might be covered by the GNU General Public License.
 */
package gnu.xml.libxmlj.sax;

/**
 * Structure containing the components of an XML element/attribute name.
 *
 * @author <a href='mailto:dog@gnu.org'>Chris Burdess</a>
 */
class XMLName
{

  private static final String XML_URI = "http://www.w3.org/XML/1998/namespace";
  
  final String uri;
  final String localName;
  final String qName;
  final String prefix;

  XMLName (GnomeXMLReader parser, String qName)
  {
    this.qName = qName;
    int ci = qName.lastIndexOf (':');
    if (ci < 1)
      {
        localName = qName;
        prefix = null;
        uri = "";
      }
    else
      {
        localName = qName.substring (ci + 1);
        prefix = qName.substring (0, ci);
        if ("xml".equals (prefix))
          {
            if ("lang".equals (localName) || "space".equals (localName))
              {
                uri = XML_URI;
              }
            else
              {
                uri = parser.getURI (prefix);
              }
          }
        else
          {
            uri = parser.getURI (prefix);
          }
      }
  }

  public String toString ()
  {
    return qName;
  }

}