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1
17
18 package org.apache.geronimo.system.url.file;
19
20 import java.io.BufferedInputStream  ;
21 import java.io.BufferedOutputStream ;
22 import java.io.File ;
23 import java.io.FileDescriptor ;
24 import java.io.FileInputStream ;
25 import java.io.FileNotFoundException ;
26 import java.io.FileOutputStream ;
27 import java.io.FilePermission ;
28 import java.io.IOException ;
29 import java.io.InputStream ;
30 import java.io.OutputStream ;
31 import java.io.SyncFailedException ;
32 import java.net.MalformedURLException ;
33 import java.net.URL ;
34 import java.net.URLConnection ;
35 import java.security.Permission ;
36 import java.util.ArrayList ;
37 import java.util.Collections ;
38 import java.util.HashMap ;
39 import java.util.List ;
40 import java.util.Map ;
41
42 import sun.net.www.ParseUtil;
43
44
51 public class FileURLConnection extends URLConnection {
52 private static final boolean IS_OS_WINDOWS = System.getProperty("os.name").startsWith("Windows");
53 private File file;
54 private FileDescriptor fd;
55
56 public FileURLConnection(final URL url, final File file) throws MalformedURLException , IOException {
57 super(url);
58
59 if (file == null) {
60 throw new IllegalArgumentException ("file is null");
61 }
62
63 this.file = file;
64 }
65
66 public File getFile() {
67 return file;
68 }
69
70 public void connect() throws IOException {
71 if (connected) {
72 return;
73 }
74
75 if (!file.exists()) {
76 throw new FileNotFoundException (file.toString());
77 }
78
79 connected = true;
80 }
81
82
89 public InputStream getInputStream() throws IOException {
90 if (!connected) {
91 connect();
92 }
93
94 FileInputStream fis = new FileInputStream (file);
95 fd = fis.getFD();
96
97 return new BufferedInputStream (fis);
98 }
99
100
107 public OutputStream getOutputStream() throws IOException {
108 if (!connected) {
109 connect();
110 }
111
112 FileOutputStream fos = new FileOutputStream (file);
113 fd = fos.getFD();
114
115 return new BufferedOutputStream (fos);
116 }
117
118
124 public Permission getPermission() throws IOException {
125 String perms = null;
127
128 if (file.canRead()) {
129 perms = "read";
130 }
131 if (file.canWrite()) {
132 if (perms != null) {
133 perms += ",write";
134 } else {
135 perms = "write";
136 }
137 }
138
139 String filename = ParseUtil.decode(url.getPath());
141 if (File.separatorChar != '/') {
142 filename.replace('/', File.separatorChar);
143 }
144
145 return new FilePermission (filename, perms);
146 }
147
148
152 private void maybeSync() {
153 if (fd != null && fd.valid()) {
154 if (IS_OS_WINDOWS) {
155 try {
156 fd.sync();
157 } catch (SyncFailedException e) {
158 }
160 }
161 }
162 }
163
164
170 public long getLastModified() {
171 maybeSync();
172 return file.lastModified();
173 }
174
175
178 public long getDate() {
179 return getLastModified();
180 }
181
182
186 public int getContentLength() {
187 maybeSync();
188
189 final long value = file.length();
190 if (value > Integer.MAX_VALUE || value < Integer.MIN_VALUE) {
191 throw new IllegalStateException ("Can not safly convert to int: " + value);
192 }
193
194 return (int) value;
195 }
196
197
200 public String getContentType() {
201 return getFileNameMap().getContentTypeFor(file.getName());
202 }
203
204
205
209
225 public String getHeaderField(final String name) {
226 if (name == null) {
227 throw new IllegalArgumentException ("name is null");
228 }
229
230 String headerName = name.toLowerCase();
231
232 if (headerName.equals("last-modified")) {
233 return String.valueOf(getLastModified());
234 } else if (headerName.equals("content-length")) {
235 return String.valueOf(getContentLength());
236 } else if (headerName.equals("content-type")) {
237 return getContentType();
238 } else if (headerName.equals("date")) {
239 return String.valueOf(getDate());
240 }
241
242 return super.getHeaderField(name);
243 }
244
245
250 public Map getHeaderFields() {
251 Map headers = new HashMap ();
252 String [] headerNames = {
253 "last-modified",
254 "content-length",
255 "content-type",
256 "date"
257 };
258
259 for (int i = 0; i < headerNames.length; i++) {
260 List list = new ArrayList (1);
261 list.add(getHeaderField(headerNames[i]));
262 headers.put(headerNames[i], Collections.unmodifiableList(list));
263 }
264
265 return Collections.unmodifiableMap(headers);
266 }
267
268
272 public String getHeaderFieldKey(final int n) {
273 return getHeaderFieldKey(n);
274 }
275
276 public String getHeaderField(final int n) {
277 return getHeaderField(n);
278 }
279 }
280 |
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