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/*
 * 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 org.apache.log4j.or.sax;

import org.apache.log4j.or.ObjectRenderer;

import org.xml.sax.Attributes;

/**
   Render org.xml.sax.Attributes objects.

   @author Ceki Gülcü
   @since 1.2 */
public class AttributesRenderer implements ObjectRenderer {

  public
  AttributesRenderer() {
  }


  /**
     Render a {@link org.xml.sax.Attributes}.
  */
  public
  String  doRender(Object o) {
    if(o instanceof Attributes) {
      StringBuffer sbuf = new StringBuffer();
      Attributes a = (Attributes) o;
      int len = a.getLength();
      boolean first = true;
      for(int i = 0; i < len; i++) {
	if(first) {
	  first = false;
	} else {
	  sbuf.append(", ");
	}
	sbuf.append(a.getQName(i));
	sbuf.append('=');
	sbuf.append(a.getValue(i));
      }
      return sbuf.toString();
    } else {
      try {
        return o.toString();
      } catch(Exception ex) {
          return ex.toString();
      }
    }
  }
}