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1 package org.sapia.clazzy;
2
3 import java.io.ByteArrayInputStream  ;
4 import java.io.File ;
5 import java.io.InputStream ;
6 import java.net.MalformedURLException ;
7 import java.net.URL ;
8 import java.util.ResourceBundle ;
9
10 import org.sapia.clazzy.loader.JarLoader;
11
12
47 public class JarClassLoader extends BaseClassLoader implements Consts{
48
49 private JarLoader _jar;
50
51 ResourceBundle bundle;
52
53 public JarClassLoader(File jar) {
54 _jar = new JarLoader(jar);
55 }
56
57 public JarClassLoader(ClassLoader parent, File jar) {
58 super(parent);
59 _jar = new JarLoader(jar);
60 }
61
62
66 public File getFile() {
67 return _jar.getJarFile();
68 }
69
70
73 protected Class findClass(String name) throws ClassNotFoundException {
74 if(!_jar.getJarFile().exists()) {
75 throw new ClassNotFoundException (name);
76 }
77
78 String resourceName = name.replace('.', '/') + ".class";
79 byte[] classBytes = _jar.loadBytes(resourceName);
80 if(classBytes == null){
81 throw new ClassNotFoundException (name);
82 }
83 String pckg = Utils.getPackageNameFor(name);
84 if(pckg != null && getPackage(pckg) == null){
85 definePackage(pckg,
86 PACKAGE_IMPL_TITLE,
87 PACKAGE_IMPL_VERSION,
88 PACKAGE_IMPL_VENDOR,
89 PACKAGE_IMPL_TITLE,
90 PACKAGE_IMPL_VERSION,
91 PACKAGE_IMPL_VENDOR,
92 null);
93 }
94 return defineClass(name, classBytes, 0, classBytes.length);
95 }
96
97
101 public InputStream findResourceAsStream(String name){
102 if(!_jar.getJarFile().exists()) {
103 return null;
104 }
105 byte[] toReturn = _jar.loadBytes(name);
106 if(toReturn == null){
107 return null;
108 }
109 return new ByteArrayInputStream (toReturn);
110 }
111
112
115 protected URL findResource(String name) {
116 try{
117 return new URL (ClazzyURLStreamHandlerFactory.PROTOCOL, "", _jar.getJarFile().getAbsolutePath()+"?"+name);
118 }catch(MalformedURLException e){
119 return null;
120 }
121 }
122
123
126 public void close(){
127 _jar.close();
128 }
129
130 }
131 |
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