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/**
 *
 * Copyright (C) 2010 Cloud Conscious, LLC. 
 *
 * ====================================================================
 * Licensed 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.vcloud.xml;

import java.net.URI;
import java.util.SortedMap;

import org.jclouds.http.functions.ParseSax;

import com.google.common.collect.Maps;

/**
 * @author Adrian Cole
 */
public class SupportedVersionsHandler extends ParseSax.HandlerWithResult> {
   private StringBuilder currentText = new StringBuilder();

   private SortedMap contents = Maps.newTreeMap();
   private String version;
   private URI location;

   public SortedMap getResult() {
      return contents;
   }

   public void endElement(String uri, String name, String qName) {
      if (qName.equals("Version")) {
         version = currentOrNull();
      } else if (qName.equals("LoginUrl")) {
         location = URI.create(currentOrNull());
      } else if (qName.equals("VersionInfo")) {
         contents.put(version, location);
      }
      currentText = new StringBuilder();
   }

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

   protected String currentOrNull() {
      String returnVal = currentText.toString().trim();
      return returnVal.equals("") ? null : returnVal;
   }
}