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.AttributeList;
  import org.xml.sax.ext.Attributes2;
  
  import mf.org.apache.xerces.impl.Constants;
  import mf.org.apache.xerces.xni.XMLAttributes;
  
  /**
   * Wraps {@link XMLAttributes} and makes it look like
   * {@link AttributeList} and {@link Attributes2}.
   *
   * @author Arnaud Le Hors, IBM
   * @author Andy Clark, IBM
   * @version $Id: AttributesProxy.java 449487 2006-09-24 21:11:28Z mrglavas $
   */
  public final class AttributesProxy
          implements AttributeList, Attributes2 {
  
      //
      // Data
      //
  
      /**
       * XML attributes.
       */
      private XMLAttributes fAttributes;
  
      //
      // Constructors
      //
  
      public AttributesProxy(XMLAttributes attributes) {
          fAttributes = attributes;
      }
  
      //
      // Public methods
      //
  
      public XMLAttributes getAttributes() {
          return fAttributes;
      }
  
      /**
       * Sets the XML attributes to be wrapped.
       */
      public void setAttributes(XMLAttributes attributes) {
          fAttributes = attributes;
      } // setAttributes(XMLAttributes)
  
      /*
       * Attributes methods
       */
  
      @Override
      public int getLength() {
          return fAttributes.getLength();
      }
  
      @Override
      public String getQName(int index) {
          return fAttributes.getQName(index);
      }
  
      @Override
      public String getURI(int index) {
          // This hides the fact that internally we use null instead of empty string
          // SAX requires the URI to be a string or an empty string
          String uri = fAttributes.getURI(index);
          return uri != null ? uri : XMLSymbols.EMPTY_STRING;
      }
  
      @Override
      public String getLocalName(int index) {
          return fAttributes.getLocalName(index);
      }
  
      @Override
      public String getType(int i) {
          return fAttributes.getType(i);
      }
  
      @Override
      public String getType(String name) {
          return fAttributes.getType(name);
      }
  
      @Override
      public String getType(String uri, String localName) {
          return uri.equals(XMLSymbols.EMPTY_STRING) ?
                  fAttributes.getType(null, localName) :
                  fAttributes.getType(uri, localName);
      }
  
      @Override
      public String getValue(int i) {
          return fAttributes.getValue(i);
      }
  
      @Override
      public String getValue(String name) {
          return fAttributes.getValue(name);
      }
  
      @Override
      public String getValue(String uri, String localName) {
          return uri.equals(XMLSymbols.EMPTY_STRING) ?
                  fAttributes.getValue(null, localName) :
                  fAttributes.getValue(uri, localName);
      }
  
      @Override
      public int getIndex(String qName) {
          return fAttributes.getIndex(qName);
      }
  
      @Override
      public int getIndex(String uri, String localPart) {
          return uri.equals(XMLSymbols.EMPTY_STRING) ?
                  fAttributes.getIndex(null, localPart) :
                  fAttributes.getIndex(uri, localPart);
      }
      
      /*
       * Attributes2 methods
       */
  
      @Override
      public boolean isDeclared(int index) {
          if (index < 0 || index >= fAttributes.getLength()) {
              throw new ArrayIndexOutOfBoundsException(index);
          }
          return Boolean.TRUE.equals(
                  fAttributes.getAugmentations(index).getItem(
                          Constants.ATTRIBUTE_DECLARED));
      }
  
      @Override
      public boolean isDeclared(String qName) {
          int index = getIndex(qName);
          if (index == -1) {
              throw new IllegalArgumentException(qName);
          }
          return Boolean.TRUE.equals(
                  fAttributes.getAugmentations(index).getItem(
                          Constants.ATTRIBUTE_DECLARED));
      }
  
      @Override
      public boolean isDeclared(String uri, String localName) {
          int index = getIndex(uri, localName);
          if (index == -1) {
              throw new IllegalArgumentException(localName);
          }
          return Boolean.TRUE.equals(
                  fAttributes.getAugmentations(index).getItem(
                          Constants.ATTRIBUTE_DECLARED));
      }
  
      @Override
      public boolean isSpecified(int index) {
          if (index < 0 || index >= fAttributes.getLength()) {
              throw new ArrayIndexOutOfBoundsException(index);
          }
          return fAttributes.isSpecified(index);
      }
  
      @Override
      public boolean isSpecified(String qName) {
          int index = getIndex(qName);
          if (index == -1) {
              throw new IllegalArgumentException(qName);
          }
          return fAttributes.isSpecified(index);
      }
  
      @Override
      public boolean isSpecified(String uri, String localName) {
          int index = getIndex(uri, localName);
          if (index == -1) {
              throw new IllegalArgumentException(localName);
          }
          return fAttributes.isSpecified(index);
      }
      
      /*
       * AttributeList methods
       */
  
      @Override
      public String getName(int i) {
          return fAttributes.getQName(i);
      }
  
  }