|
1 package com.quadcap.io.dir;
2
3
40
41 import java.io.File  ;
42 import java.io.IOException ;
43
44 import java.util.Enumeration ;
45
46 import java.util.jar.JarFile ;
47
48 import java.net.MalformedURLException ;
49 import java.net.URL ;
50
51
56
57 public class JarDirectory extends Directory {
58 URL base;
59 JarFile jar;
60 File file;
61
62 public JarDirectory(File f) throws IOException {
63 this.file = f;
64 this.jar = new JarFile (f);
65 this.base = new URL ("jar:file:" + f.getAbsolutePath() + "!/");
66 }
67
68 public Enumeration entries() {
69 final JarDirectory dir = this;
70 final Enumeration je = jar.entries();
71 return new Enumeration () {
72 public boolean hasMoreElements() {
73 return je.hasMoreElements();
74 }
75 public Object nextElement() {
76 java.util.jar.JarEntry j = (java.util.jar.JarEntry )je.nextElement();
77 return j.getName();
78 }
79 };
80 }
81
82 public Entry getEntry(String name) {
83 java.util.jar.JarEntry j = jar.getJarEntry(name);
84 if (j != null) {
85 return new JarEntry(this, j);
86 } else {
87 return null;
88 }
89 }
90
91 public URL getURL(String name) throws MalformedURLException {
92 URL url = null;
93 if (name.charAt(0) == '/') name = name.substring(1);
94 java.util.jar.JarEntry j = jar.getJarEntry(name);
95 if (j != null) {
96 url = new URL (base, name);
97 }
98 return url;
99 }
100
101 public String getRealPath(String name) {
102 return null;
103 }
104
105 public String getRootPath() {
106 return file.getAbsolutePath();
107 }
108
109 public void close() throws IOException {
110 jar.close();
111 }
112
113 public boolean isFile() { return false; }
114 }
115 |
Popular Tags |
Java API By Example, From Geeks To Geeks.