1 /*
2 * Copyright (c) 2005 The University of Reading
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of the University of Reading, nor the names of the
14 * authors or contributors may be used to endorse or promote products
15 * derived from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29 package uk.ac.rdg.resc.jstyx.client;
30
31 import java.net.URL;
32 import java.net.MalformedURLException;
33 import java.io.File;
34
35 import uk.ac.rdg.resc.jstyx.client.StyxConnection;
36 import uk.ac.rdg.resc.jstyx.client.CStyxFile;
37 import uk.ac.rdg.resc.jstyx.client.CStyxFileChangeAdapter;
38 import uk.ac.rdg.resc.jstyx.StyxUtils;
39 import uk.ac.rdg.resc.jstyx.StyxException;
40
41 /***
42 * A simple application that downloads a file from a remote server and times
43 * the download, providing an indication of progress as it goes.
44 *
45 * @author Jon Blower
46 * $Revision: 86 $
47 * $Date $
48 * $Log$
49 * Revision 1.1 2005/03/07 08:27:52 jonblower
50 * Initial import
51 *
52 */
53 public class StyxGet extends CStyxFileChangeAdapter
54 {
55 private URL styxURL;
56 private File targetDir;
57
58 public StyxGet(String styxURL, String targetDir) throws Exception
59 {
60 try
61 {
62 this.styxURL = new URL(styxURL);
63 }
64 catch(MalformedURLException mue)
65 {
66 throw new Exception("Not a valid URL (have you set the" +
67 " java.protocol.handler.pkgs property correctly?)");
68 }
69 if (!this.styxURL.getProtocol().equals("styx"))
70 {
71 throw new Exception("Can only download from styx:// URLs");
72 }
73 String path = this.styxURL.getPath();
74 if (path.endsWith("/"))
75 {
76 throw new Exception("Cannot download a directory");
77 }
78 this.targetDir = new File(targetDir);
79 if (!this.targetDir.exists() || !this.targetDir.isDirectory())
80 {
81 throw new Exception(targetDir + " is not a directory");
82 }
83
84 // Get the name of the remote file (i.e. the last part of the path)
85 int lastSlash = path.lastIndexOf("/");
86 // We've already checked that the URL doesn't end with a slash
87 String filename = path.substring(lastSlash + 1);
88
89 // Check that the file we're going to create doesn't exist
90 File targetFile = new File(targetDir, filename);
91 if (targetFile.exists())
92 {
93 throw new Exception(targetFile + " already exists");
94 }
95 }
96
97 public void get() throws StyxException
98 {
99 StyxConnection conn = new
100 StyxConnection(this.styxURL.getHost(), this.styxURL.getPort());
101 conn.connect();
102 CStyxFile file = conn.openFile(this.styxURL.getPath(), StyxUtils.OREAD);
103 long length = file.getLength();
104
105 }
106
107 public static void main (String[] args) throws Exception
108 {
109 // TODO: throw up a GUI if no arguments or if -gui switch used?
110 if (args.length != 2)
111 {
112 System.err.println("Usage: StyxGet <styx:// URL> <target directory>");
113 return;
114 }
115
116 }
117
118 }