1   /**
2    * Copyright (c) 2000-2007 Liferay, Inc. All rights reserved.
3    *
4    * Permission is hereby granted, free of charge, to any person obtaining a copy
5    * of this software and associated documentation files (the "Software"), to deal
6    * in the Software without restriction, including without limitation the rights
7    * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8    * copies of the Software, and to permit persons to whom the Software is
9    * furnished to do so, subject to the following conditions:
10   *
11   * The above copyright notice and this permission notice shall be included in
12   * all copies or substantial portions of the Software.
13   *
14   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20   * SOFTWARE.
21   */
22  
23  package com.liferay.portlet.weather.util;
24  
25  import com.liferay.portal.kernel.util.GetterUtil;
26  import com.liferay.portal.util.WebCacheable;
27  import com.liferay.portlet.weather.model.Weather;
28  import com.liferay.util.ConverterException;
29  import com.liferay.util.Html;
30  import com.liferay.util.Http;
31  import com.liferay.util.HttpUtil;
32  import com.liferay.util.Time;
33  
34  /**
35   * <a href="WeatherConverter.java.html"><b><i>View Source</i></b></a>
36   *
37   * @author Brian Wing Shun Chan
38   *
39   */
40  public class WeatherConverter implements WebCacheable {
41  
42      public WeatherConverter(String zip) {
43          _zip = zip;
44      }
45  
46      public Object convert(String id) throws ConverterException {
47          Weather weather = null;
48  
49          try {
50              String text = Html.stripComments(Http.URLtoString(
51                  "http://weather.yahoo.com/search/weather2?p=" +
52                      HttpUtil.encodeURL(_zip)));
53  
54              int x = text.indexOf("forecast-temperature");
55  
56              x = text.indexOf("h3>", x) + 3;
57  
58              int y = text.indexOf("&deg;", x);
59  
60              float temperature = GetterUtil.getFloat(text.substring(x, y));
61  
62              x = text.indexOf("background:url(", x);
63              x = text.indexOf("http://", x);
64  
65              y = text.indexOf(".png", x) - 1;
66  
67              String iconURL = text.substring(x, y) + "s.png";
68  
69              weather = new Weather(_zip, iconURL, temperature);
70          }
71          catch (Exception e) {
72              throw new ConverterException(_zip);
73          }
74  
75          return weather;
76      }
77  
78      public long getRefreshTime() {
79          return _REFRESH_TIME;
80      }
81  
82      private static final long _REFRESH_TIME = Time.MINUTE * 20;
83  
84      private String _zip;
85  
86  }