| WeatherConverter.java |
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("°", 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 }