/*
 * 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 <code>org.xml.sax.Attributes</code> objects.
 * 
 * @author Ceki G&uuml;lc&uuml;
 * @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) {
	    StringBuilder sbuf = new StringBuilder();
	    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();
	    }
	}
    }
}
