content: /*
   * Licensed to the Apache Software Foundation (ASF) under one or more
   * contributor license agreements.  See the NOTICE file distributed with
   * this work for additional information regarding copyright ownership.
   * The ASF licenses this file to You under the Apache License, Version 2.0
   * (the "License"); you may not use this file except in compliance with
   * the License.  You may obtain a copy of the License at
   * 
   *      http://www.apache.org/licenses/LICENSE-2.0
   * 
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package mf.org.apache.xerces.util;
  
  import org.xml.sax.Locator;
  import org.xml.sax.ext.Locator2;
  
  import mf.org.apache.xerces.xni.XMLLocator;
  
  /**
   * <p>A light wrapper around a SAX locator. This is useful
   * when bridging between SAX and XNI components.</p>
   *
   * @author Michael Glavassevich, IBM
   * @version $Id: SAXLocatorWrapper.java 699892 2008-09-28 21:08:27Z mrglavas $
   */
  public final class SAXLocatorWrapper implements XMLLocator {
  
      private Locator fLocator = null;
      private Locator2 fLocator2 = null;
  
      public SAXLocatorWrapper() {
      }
  
      public Locator getLocator() {
          return fLocator;
      }
  
      public void setLocator(Locator locator) {
          fLocator = locator;
          if (locator instanceof Locator2 || locator == null) {
              fLocator2 = (Locator2) locator;
          }
      }
      
      /*
       * XMLLocator methods
       */
  
      @Override
      public String getPublicId() {
          if (fLocator != null) {
              return fLocator.getPublicId();
          }
          return null;
      }
  
      @Override
      public String getLiteralSystemId() {
          if (fLocator != null) {
              return fLocator.getSystemId();
          }
          return null;
      }
  
      @Override
      public String getBaseSystemId() {
          return null;
      }
  
      @Override
      public String getExpandedSystemId() {
          return getLiteralSystemId();
      }
  
      @Override
      public int getLineNumber() {
          if (fLocator != null) {
              return fLocator.getLineNumber();
          }
          return -1;
      }
  
      @Override
      public int getColumnNumber() {
          if (fLocator != null) {
              return fLocator.getColumnNumber();
          }
          return -1;
      }
  
      @Override
      public int getCharacterOffset() {
          return -1;
      }
  
      @Override
      public String getEncoding() {
          if (fLocator2 != null) {
              return fLocator2.getEncoding();
          }
          return null;
      }
  
      @Override
      public String getXMLVersion() {
          if (fLocator2 != null) {
              return fLocator2.getXMLVersion();
          }
          return null;
      }
  
  } // SAXLocatorWrapper
  