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1
36 package org.ungoverned.oscar;
37
38 import java.io.ByteArrayInputStream  ;
39 import java.io.IOException ;
40 import java.io.InputStream ;
41 import java.net.URL ;
42 import java.net.URLConnection ;
43 import java.security.Permission ;
44
45 import org.ungoverned.moduleloader.Module;
46 import org.ungoverned.moduleloader.ModuleManager;
47 import org.ungoverned.moduleloader.ResourceSource;
48
49 class BundleURLConnection extends URLConnection
50 {
51 private ModuleManager m_mgr = null;
52 private long id;
53 private int contentLength;
54 private long contentTime;
55 private String contentType;
56 private InputStream is;
57
58 public BundleURLConnection(ModuleManager mgr, URL url)
59 {
60 super(url);
61 m_mgr = mgr;
62 }
63
64 public void connect() throws IOException
65 {
66 if (!connected)
67 {
68
71 Module module = m_mgr.getModule(url.getHost());
72 if (module == null)
73 {
74 throw new IOException ("Unable to find bundle's module.");
75 }
76
77 String resource = url.getFile();
78 if (resource == null)
79 {
80 throw new IOException ("Unable to find resource: " + url.toString());
81 }
82 if (resource.startsWith("/"))
83 {
84 resource = resource.substring(1);
85 }
86 int rsIdx = -1;
87 try
88 {
89 rsIdx = Integer.parseInt(resource.substring(0, resource.indexOf("/")));
90 }
91 catch (NumberFormatException ex)
92 {
93 new IOException ("Error parsing resource index.");
94 }
95 resource = resource.substring(resource.indexOf("/") + 1);
96
97 byte[] bytes = null;
99 ResourceSource[] resSources = module.getResourceSources();
100 if ((resSources != null) && (rsIdx < resSources.length))
101 {
102 if (resSources[rsIdx].hasResource(resource))
103 {
104 bytes = resSources[rsIdx].getBytes(resource);
105 }
106 }
107
108 if (bytes == null)
109 {
110 throw new IOException ("Unable to find resource: " + url.toString());
111 }
112
113 is = new ByteArrayInputStream (bytes);
114 contentLength = bytes.length;
115 contentTime = 0L; contentType = URLConnection.guessContentTypeFromName(resource);
117 connected = true;
118 }
119 }
120
121 public InputStream getInputStream()
122 throws IOException
123 {
124 if (!connected)
125 {
126 connect();
127 }
128 return is;
129 }
130
131 public int getContentLength()
132 {
133 if (!connected)
134 {
135 try {
136 connect();
137 } catch(IOException ex) {
138 return -1;
139 }
140 }
141 return contentLength;
142 }
143
144 public long getLastModified()
145 {
146 if (!connected)
147 {
148 try {
149 connect();
150 } catch(IOException ex) {
151 return 0;
152 }
153 }
154 if(contentTime != -1L)
155 return contentTime;
156 else
157 return 0L;
158 }
159
160 public String getContentType()
161 {
162 if (!connected)
163 {
164 try {
165 connect();
166 } catch(IOException ex) {
167 return null;
168 }
169 }
170 return contentType;
171 }
172
173 public Permission getPermission()
174 {
175 return null;
181 }
182 }
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