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Java > Open Source Codes > org > lobobrowser > util > Urls


1 /*
2     GNU LESSER GENERAL PUBLIC LICENSE
3     Copyright (C) 2006 The Lobo Project
4
5     This library is free software; you can redistribute it and/or
6     modify it under the terms of the GNU Lesser General Public
7     License as published by the Free Software Foundation; either
8     version 2.1 of the License, or (at your option) any later version.
9
10     This library is distributed in the hope that it will be useful,
11     but WITHOUT ANY WARRANTY; without even the implied warranty of
12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13     Lesser General Public License for more details.
14
15     You should have received a copy of the GNU Lesser General Public
16     License along with this library; if not, write to the Free Software
17     Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
18
19     Contact info: xamjadmin@users.sourceforge.net
20 */
21 /*
22  * Created on Jun 12, 2005
23  */
24 package org.lobobrowser.util;
25
26 import java.net.*;
27
28 public class Urls {
29     /**
30      *
31      */
32     private Urls() {
33         super();
34     }
35     
36     public static boolean isRemote(java.net.URL JavaDoc url) {
37         String JavaDoc scheme = url.getProtocol();
38         return "http".equalsIgnoreCase(scheme) ||
39                "https".equalsIgnoreCase(scheme) ||
40                "ftp".equalsIgnoreCase(scheme) ||
41                ("file".equalsIgnoreCase(scheme) && hasHost(url));
42     }
43     
44     public static boolean isLocalFile(java.net.URL JavaDoc url) {
45         String JavaDoc scheme = url.getProtocol();
46         return "file".equalsIgnoreCase(scheme) && !hasHost(url);
47     }
48
49     public static boolean hasHost(java.net.URL JavaDoc url) {
50         String JavaDoc host = url.getHost();
51         return host != null && !"".equals(host);
52     }
53
54     /**
55      * Creates an absolute URL in a manner equivalent to
56      * major browsers.
57      */
58     public static URL createURL(URL baseUrl, String JavaDoc relativeUrl) throws java.net.MalformedURLException JavaDoc {
59         return new URL(baseUrl, relativeUrl);
60     }
61 }
62
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