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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.jclouds.ec2.xml;

import static shaded.com.google.common.base.Charsets.UTF_8;
import static shaded.com.google.common.io.BaseEncoding.base64;

import java.util.regex.Pattern;

import org.jclouds.http.functions.ParseSax;

/**
 * @see 
 *       ApiReference query GetConsoleOutput
 */
public class GetConsoleOutputResponseHandler extends ParseSax.HandlerWithResult {

    private StringBuilder currentText = new StringBuilder();
    private String output;

    @Override
    public String getResult() {
       return output;
    }

    private static final Pattern whitespace = Pattern.compile("\\s");

    @Override
    public void endElement(String uri, String name, String qName) {
       if (qName.equalsIgnoreCase("output")) {
          this.output = new String(base64().decode(whitespace.matcher(currentText).replaceAll("")), UTF_8);
       }
       currentText.setLength(0);
    }

    @Override
    public void characters(char[] ch, int start, int length) {
       currentText.append(ch, start, length);
    }
}