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1 package org.sapia.resource;
2
3 import java.io.File  ;
4 import java.io.FileInputStream ;
5 import java.io.IOException ;
6 import java.io.InputStream ;
7 import java.net.MalformedURLException ;
8 import java.net.URI ;
9 import java.net.URISyntaxException ;
10
11
18 public class FileResource implements Resource {
19 private File _file;
20
21 public FileResource(File f) {
22 _file = f;
23 }
24
25 public String getURI() {
26 try {
27 return _file.toURL().toExternalForm();
28 } catch(MalformedURLException e) {
29 throw new IllegalStateException ("Could not create URL from resource: "
30 + _file.getAbsolutePath() + "; caught: " + e.getClass().getName()
31 + " - " + e.getMessage());
32 }
33 }
34
35 public Resource getRelative(String uri) throws IOException {
36 try{
37 if(Utils.hasScheme(uri)){
38 URI u = new URI (uri);
39 if(Utils.isAbsolute(u)){
40 throw new IOException ("URI is absolute: " + uri + "; must be relative");
41 }
42 }
43 File relative;
44 if(_file != null){
45 relative = new File (Utils.getRelativePath(_file.getAbsolutePath(), uri, true));
46 if(!relative.exists()){
47 relative = new File (uri);
48 }
49 }
50 else{
51 relative = new File (uri);
52 }
53 return new FileResource(relative);
54 }catch(URISyntaxException e){
55 throw new IOException (e.getMessage());
56 }
57 }
58
59 public InputStream getInputStream() throws IOException {
60 return new FileInputStream (_file);
61 }
62
63 public long lastModified() {
64 return _file.lastModified();
65 }
66
67 public String toString() {
68 return _file.getAbsolutePath();
69 }
70 }
71 |
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