| 1 | package com.sun.tools.javac.zip; |
| 2 | |
| 3 | import java.io.*; |
| 4 | import java.text.MessageFormat; |
| 5 | import java.util.*; |
| 6 | import java.util.List; |
| 7 | import java.util.concurrent.locks.ReentrantLock; |
| 8 | import java.util.zip.*; |
| 9 | |
| 10 | /** This class implements building of index of a zip archive and access to it's context. |
| 11 | * It also uses prebuild index if available. It supports invocations where it will |
| 12 | * serialize an optimized zip index file to disk. |
| 13 | * |
| 14 | * In oreder to use secondary index file make sure the option "usezipindex" is in the Options object, |
| 15 | * when JavacFileManager is invoked. (You can pass "-XDusezipindex" on the command line. |
| 16 | * |
| 17 | * Location where to look for/generate optimized zip index files can be provided using |
| 18 | * "-XDcachezipindexdir=<directory>". If this flag is not provided, the dfault location is |
| 19 | * the value of the "java.io.tmpdir" system property. |
| 20 | * |
| 21 | * If key "-XDwritezipindexfiles" is specified, there will be new optimized index file |
| 22 | * created for each archive, used by the compiler for compilation, at location, |
| 23 | * specified by "cachezipindexdir" option. |
| 24 | * |
| 25 | * If nonBatchMode option is specified (-XDnonBatchMode) the compiler will use timestamp |
| 26 | * checking to reindex the zip files if it is needed. In batch mode the timestamps are not checked |
| 27 | * and the compiler uses the cached indexes. |
| 28 | */ |
| 29 | public class ZipFileIndex { |
| 30 | private static final String MIN_CHAR = String.valueOf(Character.MIN_VALUE); |
| 31 | private static final String MAX_CHAR = String.valueOf(Character.MAX_VALUE); |
| 32 | |
| 33 | public final static long NOT_MODIFIED = Long.MIN_VALUE; |
| 34 | |
| 35 | private static Map<File, ZipFileIndex> zipFileIndexCache = new HashMap<File, ZipFileIndex>(); |
| 36 | private static ReentrantLock lock = new ReentrantLock(); |
| 37 | |
| 38 | private static boolean NON_BATCH_MODE = System.getProperty("nonBatchMode") != null;// TODO: Use -XD compiler switch for this. |
| 39 | |
| 40 | private Map<String, DirectoryEntry> directories = Collections.<String, DirectoryEntry>emptyMap(); |
| 41 | private Set<String> allDirs = Collections.<String>emptySet(); |
| 42 | |
| 43 | // ZipFileIndex data entries |
| 44 | private File zipFile; |
| 45 | private long zipFileLastModified = NOT_MODIFIED; |
| 46 | private RandomAccessFile zipRandomFile; |
| 47 | private ZipFileIndexEntry[] entries; |
| 48 | |
| 49 | private boolean readFromIndex = false; |
| 50 | private File zipIndexFile = null; |
| 51 | private boolean triedToReadIndex = false; |
| 52 | private int symbolFilePrefixLength = 0; |
| 53 | private boolean hasPopulatedData = false; |
| 54 | private long lastReferenceTimeStamp = NOT_MODIFIED; |
| 55 | |
| 56 | private boolean usePreindexedCache = false; |
| 57 | private String preindexedCacheLocation = null; |
| 58 | |
| 59 | private boolean writeIndex = false; |
| 60 | |
| 61 | /** |
| 62 | * Returns a list of all ZipFileIndex entries |
| 63 | * |
| 64 | * @return A list of ZipFileIndex entries, or an empty list |
| 65 | */ |
| 66 | public static List<ZipFileIndex> getZipFileIndexes() { |
| 67 | return getZipFileIndexes(false); |
| 68 | } |
| 69 | |
| 70 | /** |
| 71 | * Returns a list of all ZipFileIndex entries |
| 72 | * |
| 73 | * @param openedOnly If true it returns a list of only opened ZipFileIndex entries, otherwise |
| 74 | * all ZipFileEntry(s) are included into the list. |
| 75 | * @return A list of ZipFileIndex entries, or an empty list |
| 76 | */ |
| 77 | public static List<ZipFileIndex> getZipFileIndexes(boolean openedOnly) { |
| 78 | List<ZipFileIndex> zipFileIndexes = new ArrayList<ZipFileIndex>(); |
| 79 | lock.lock(); |
| 80 | try { |
| 81 | zipFileIndexes.addAll(zipFileIndexCache.values()); |
| 82 | |
| 83 | if (openedOnly) { |
| 84 | for(ZipFileIndex elem : zipFileIndexes) { |
| 85 | if (!elem.isOpen()) { |
| 86 | zipFileIndexes.remove(elem); |
| 87 | } |
| 88 | } |
| 89 | } |
| 90 | } |
| 91 | finally { |
| 92 | lock.unlock(); |
| 93 | } |
| 94 | return zipFileIndexes; |
| 95 | } |
| 96 | |
| 97 | public boolean isOpen() { |
| 98 | lock.lock(); |
| 99 | try { |
| 100 | return zipRandomFile != null; |
| 101 | } |
| 102 | finally { |
| 103 | lock.unlock(); |
| 104 | } |
| 105 | } |
| 106 | |
| 107 | public static ZipFileIndex getZipFileIndex(File zipFile, int symbolFilePrefixLen, boolean useCache, String cacheLocation, boolean writeIndex) throws IOException { |
| 108 | ZipFileIndex zi = null; |
| 109 | lock.lock(); |
| 110 | try { |
| 111 | zi = getExistingZipIndex(zipFile); |
| 112 | |
| 113 | if (zi == null || (zi != null && zipFile.lastModified() != zi.zipFileLastModified)) { |
| 114 | zi = new ZipFileIndex(zipFile, symbolFilePrefixLen, writeIndex, |
| 115 | useCache, cacheLocation); |
| 116 | zipFileIndexCache.put(zipFile, zi); |
| 117 | } |
| 118 | } |
| 119 | finally { |
| 120 | lock.unlock(); |
| 121 | } |
| 122 | return zi; |
| 123 | } |
| 124 | |
| 125 | public static ZipFileIndex getExistingZipIndex(File zipFile) { |
| 126 | lock.lock(); |
| 127 | try { |
| 128 | return zipFileIndexCache.get(zipFile); |
| 129 | } |
| 130 | finally { |
| 131 | lock.unlock(); |
| 132 | } |
| 133 | } |
| 134 | |
| 135 | public static void clearCache() { |
| 136 | lock.lock(); |
| 137 | try { |
| 138 | zipFileIndexCache.clear(); |
| 139 | } |
| 140 | finally { |
| 141 | lock.unlock(); |
| 142 | } |
| 143 | } |
| 144 | |
| 145 | public static void clearCache(long timeNotUsed) { |
| 146 | lock.lock(); |
| 147 | try { |
| 148 | Iterator<File> cachedFileIterator = zipFileIndexCache.keySet().iterator(); |
| 149 | while (cachedFileIterator.hasNext()) { |
| 150 | File cachedFile = cachedFileIterator.next(); |
| 151 | ZipFileIndex cachedZipIndex = zipFileIndexCache.get(cachedFile); |
| 152 | if (cachedZipIndex != null) { |
| 153 | long timeToTest = cachedZipIndex.lastReferenceTimeStamp + timeNotUsed; |
| 154 | if (timeToTest < cachedZipIndex.lastReferenceTimeStamp || // Overflow... |
| 155 | System.currentTimeMillis() > timeToTest) { |
| 156 | zipFileIndexCache.remove(cachedFile); |
| 157 | } |
| 158 | } |
| 159 | } |
| 160 | } |
| 161 | finally { |
| 162 | lock.unlock(); |
| 163 | } |
| 164 | } |
| 165 | |
| 166 | public static void removeFromCache(File file) { |
| 167 | lock.lock(); |
| 168 | try { |
| 169 | zipFileIndexCache.remove(file); |
| 170 | } |
| 171 | finally { |
| 172 | lock.unlock(); |
| 173 | } |
| 174 | } |
| 175 | |
| 176 | /** Sets already opened list of ZipFileIndexes from an outside client |
| 177 | * of the compiler. This functionality should be used in a non-batch clients of the compiler. |
| 178 | */ |
| 179 | public static void setOpenedIndexes(List<ZipFileIndex>indexes) throws IllegalStateException { |
| 180 | lock.lock(); |
| 181 | try { |
| 182 | if (zipFileIndexCache.isEmpty()) { |
| 183 | throw new IllegalStateException("Setting opened indexes should be called only when the ZipFileCache is empty. Call JavacFileManager.flush() before calling this method."); |
| 184 | } |
| 185 | |
| 186 | for (ZipFileIndex zfi : indexes) { |
| 187 | zipFileIndexCache.put(zfi.zipFile, zfi); |
| 188 | } |
| 189 | } |
| 190 | finally { |
| 191 | lock.unlock(); |
| 192 | } |
| 193 | } |
| 194 | |
| 195 | private ZipFileIndex(File zipFile, int symbolFilePrefixLen, boolean writeIndex, |
| 196 | boolean useCache, String cacheLocation) throws IOException { |
| 197 | this.zipFile = zipFile; |
| 198 | this.symbolFilePrefixLength = symbolFilePrefixLen; |
| 199 | this.writeIndex = writeIndex; |
| 200 | this.usePreindexedCache = useCache; |
| 201 | this.preindexedCacheLocation = cacheLocation; |
| 202 | |
| 203 | if (zipFile != null) { |
| 204 | this.zipFileLastModified = zipFile.lastModified(); |
| 205 | } |
| 206 | |
| 207 | // Validate integrity of the zip file |
| 208 | checkIndex(); |
| 209 | } |
| 210 | |
| 211 | public String toString() { |
| 212 | return "ZipFileIndex of file:(" + zipFile + ")"; |
| 213 | } |
| 214 | |
| 215 | // Just in case... |
| 216 | protected void finalize() { |
| 217 | closeFile(); |
| 218 | } |
| 219 | |
| 220 | private boolean isUpToDate() { |
| 221 | if (zipFile != null && |
| 222 | ((!NON_BATCH_MODE) || zipFileLastModified == zipFile.lastModified()) && |
| 223 | hasPopulatedData) { |
| 224 | return true; |
| 225 | } |
| 226 | |
| 227 | return false; |
| 228 | } |
| 229 | |
| 230 | /** |
| 231 | * Here we need to make sure that the ZipFileIndex is valid. Check the timestamp of the file and |
| 232 | * if its the same as the one at the time the index was build we don't need to reopen anything. |
| 233 | */ |
| 234 | private void checkIndex() throws IOException { |
| 235 | boolean isUpToDate = true; |
| 236 | if (!isUpToDate()) { |
| 237 | closeFile(); |
| 238 | isUpToDate = false; |
| 239 | } |
| 240 | |
| 241 | if (zipRandomFile != null || isUpToDate) { |
| 242 | lastReferenceTimeStamp = System.currentTimeMillis(); |
| 243 | return; |
| 244 | } |
| 245 | |
| 246 | hasPopulatedData = true; |
| 247 | |
| 248 | if (readIndex()) { |
| 249 | lastReferenceTimeStamp = System.currentTimeMillis(); |
| 250 | return; |
| 251 | } |
| 252 | |
| 253 | directories = Collections.<String, DirectoryEntry>emptyMap(); |
| 254 | allDirs = Collections.<String>emptySet(); |
| 255 | |
| 256 | try { |
| 257 | openFile(); |
| 258 | long totalLength = zipRandomFile.length(); |
| 259 | ZipDirectory directory = new ZipDirectory(zipRandomFile, 0L, totalLength, this); |
| 260 | directory.buildIndex(); |
| 261 | } finally { |
| 262 | if (zipRandomFile != null) { |
| 263 | closeFile(); |
| 264 | } |
| 265 | } |
| 266 | |
| 267 | lastReferenceTimeStamp = System.currentTimeMillis(); |
| 268 | } |
| 269 | |
| 270 | private void openFile() throws FileNotFoundException { |
| 271 | if (zipRandomFile == null && zipFile != null) { |
| 272 | zipRandomFile = new RandomAccessFile(zipFile, "r"); |
| 273 | } |
| 274 | } |
| 275 | |
| 276 | private void cleanupState() { |
| 277 | // Make sure there is a valid but empty index if the file doesn't exist |
| 278 | entries = ZipFileIndexEntry.EMPTY_ARRAY; |
| 279 | directories = Collections.<String, DirectoryEntry>emptyMap(); |
| 280 | zipFileLastModified = NOT_MODIFIED; |
| 281 | allDirs = Collections.<String>emptySet(); |
| 282 | } |
| 283 | |
| 284 | public void close() { |
| 285 | lock.lock(); |
| 286 | try { |
| 287 | writeIndex(); |
| 288 | closeFile(); |
| 289 | } |
| 290 | finally { |
| 291 | lock.unlock(); |
| 292 | } |
| 293 | } |
| 294 | |
| 295 | private void closeFile() { |
| 296 | if (zipRandomFile != null) { |
| 297 | try { |
| 298 | zipRandomFile.close(); |
| 299 | } catch (IOException ex) { |
| 300 | } |
| 301 | zipRandomFile = null; |
| 302 | } |
| 303 | } |
| 304 | |
| 305 | /** |
| 306 | * Returns the ZipFileIndexEntry for an absolute path, if there is one. |
| 307 | */ |
| 308 | public ZipFileIndexEntry getZipIndexEntry(String path) { |
| 309 | if (File.separatorChar != '/') { |
| 310 | path = path.replace('/', File.separatorChar); |
| 311 | } |
| 312 | lock.lock(); |
| 313 | try { |
| 314 | checkIndex(); |
| 315 | String lookFor = ""; |
| 316 | int lastSepIndex = path.lastIndexOf(File.separatorChar); |
| 317 | boolean noSeparator = false; |
| 318 | if (lastSepIndex == -1) { |
| 319 | noSeparator = true; |
| 320 | } |
| 321 | |
| 322 | DirectoryEntry de = directories.get(noSeparator ? "" : path.substring(0, lastSepIndex)); |
| 323 | |
| 324 | lookFor = path.substring(noSeparator ? 0 : lastSepIndex + 1); |
| 325 | |
| 326 | return de == null ? null : de.getEntry(lookFor); |
| 327 | } |
| 328 | catch (IOException e) { |
| 329 | return null; |
| 330 | } |
| 331 | finally { |
| 332 | lock.unlock(); |
| 333 | } |
| 334 | } |
| 335 | |
| 336 | /** |
| 337 | * Returns a javac List of filenames within an absolute path in the ZipFileIndex. |
| 338 | */ |
| 339 | public com.sun.tools.javac.util.List<String> getFiles(String path) { |
| 340 | if (File.separatorChar != '/') { |
| 341 | path = path.replace('/', File.separatorChar); |
| 342 | } |
| 343 | |
| 344 | lock.lock(); |
| 345 | try { |
| 346 | checkIndex(); |
| 347 | |
| 348 | DirectoryEntry de = directories.get(path); |
| 349 | com.sun.tools.javac.util.List<String> ret = de == null ? null : de.getFiles(); |
| 350 | |
| 351 | if (ret == null) { |
| 352 | return com.sun.tools.javac.util.List.<String>nil(); |
| 353 | } |
| 354 | return ret; |
| 355 | } |
| 356 | catch (IOException e) { |
| 357 | return com.sun.tools.javac.util.List.<String>nil(); |
| 358 | } |
| 359 | finally { |
| 360 | lock.unlock(); |
| 361 | } |
| 362 | } |
| 363 | |
| 364 | public List<String> getAllDirectories(String path) { |
| 365 | |
| 366 | if (File.separatorChar != '/') { |
| 367 | path = path.replace('/', File.separatorChar); |
| 368 | } |
| 369 | |
| 370 | lock.lock(); |
| 371 | try { |
| 372 | checkIndex(); |
| 373 | path = path.intern(); |
| 374 | |
| 375 | DirectoryEntry de = directories.get(path); |
| 376 | com.sun.tools.javac.util.List<String> ret = de == null ? null : de.getDirectories(); |
| 377 | |
| 378 | if (ret == null) { |
| 379 | return com.sun.tools.javac.util.List.<String>nil(); |
| 380 | } |
| 381 | |
| 382 | return ret; |
| 383 | } |
| 384 | catch (IOException e) { |
| 385 | return com.sun.tools.javac.util.List.<String>nil(); |
| 386 | } |
| 387 | finally { |
| 388 | lock.unlock(); |
| 389 | } |
| 390 | } |
| 391 | |
| 392 | public Set<String> getAllDirectories() { |
| 393 | lock.lock(); |
| 394 | try { |
| 395 | checkIndex(); |
| 396 | if (allDirs == Collections.EMPTY_SET) { |
| 397 | Set<String> alldirs = new HashSet<String>(); |
| 398 | Iterator<String> dirsIter = directories.keySet().iterator(); |
| 399 | while (dirsIter.hasNext()) { |
| 400 | alldirs.add(new String(dirsIter.next())); |
| 401 | } |
| 402 | |
| 403 | allDirs = alldirs; |
| 404 | } |
| 405 | |
| 406 | return allDirs; |
| 407 | } |
| 408 | catch (IOException e) { |
| 409 | return Collections.<String>emptySet(); |
| 410 | } |
| 411 | finally { |
| 412 | lock.unlock(); |
| 413 | } |
| 414 | } |
| 415 | |
| 416 | /** |
| 417 | * Tests if a specific path exists in the zip. This method will return true |
| 418 | * for file entries and directories. |
| 419 | * |
| 420 | * @param path A path within the zip. |
| 421 | * @return True if the path is a file or dir, false otherwise. |
| 422 | */ |
| 423 | public boolean contains(String path) { |
| 424 | lock.lock(); |
| 425 | try { |
| 426 | checkIndex(); |
| 427 | return getZipIndexEntry(path) != null; |
| 428 | } |
| 429 | catch (IOException e) { |
| 430 | return false; |
| 431 | } |
| 432 | finally { |
| 433 | lock.unlock(); |
| 434 | } |
| 435 | } |
| 436 | |
| 437 | public boolean isDirectory(String path) throws IOException { |
| 438 | lock.lock(); |
| 439 | try { |
| 440 | // The top level in a zip file is always a directory. |
| 441 | if (path.length() == 0) { |
| 442 | lastReferenceTimeStamp = System.currentTimeMillis(); |
| 443 | return true; |
| 444 | } |
| 445 | |
| 446 | if (File.separatorChar != '/') |
| 447 | path = path.replace('/', File.separatorChar); |
| 448 | checkIndex(); |
| 449 | return directories.get(path) != null; |
| 450 | } |
| 451 | finally { |
| 452 | lock.unlock(); |
| 453 | } |
| 454 | } |
| 455 | |
| 456 | public long getLastModified(String path) throws IOException { |
| 457 | lock.lock(); |
| 458 | try { |
| 459 | ZipFileIndexEntry entry = getZipIndexEntry(path); |
| 460 | if (entry == null) |
| 461 | throw new FileNotFoundException(); |
| 462 | return entry.getLastModified(); |
| 463 | } |
| 464 | finally { |
| 465 | lock.unlock(); |
| 466 | } |
| 467 | } |
| 468 | |
| 469 | public int length(String path) throws IOException { |
| 470 | lock.lock(); |
| 471 | try { |
| 472 | ZipFileIndexEntry entry = getZipIndexEntry(path); |
| 473 | if (entry == null) |
| 474 | throw new FileNotFoundException(); |
| 475 | |
| 476 | if (entry.isDir) { |
| 477 | return 0; |
| 478 | } |
| 479 | |
| 480 | byte[] header = getHeader(entry); |
| 481 | // entry is not compressed? |
| 482 | if (get2ByteLittleEndian(header, 8) == 0) { |
| 483 | return entry.compressedSize; |
| 484 | } else { |
| 485 | return entry.size; |
| 486 | } |
| 487 | } |
| 488 | finally { |
| 489 | lock.unlock(); |
| 490 | } |
| 491 | } |
| 492 | |
| 493 | public byte[] read(String path) throws IOException { |
| 494 | lock.lock(); |
| 495 | try { |
| 496 | ZipFileIndexEntry entry = getZipIndexEntry(path); |
| 497 | if (entry == null) |
| 498 | throw new FileNotFoundException(MessageFormat.format("Path not found in ZIP: {0}", path)); |
| 499 | return read(entry); |
| 500 | } |
| 501 | finally { |
| 502 | lock.unlock(); |
| 503 | } |
| 504 | } |
| 505 | |
| 506 | public byte[] read(ZipFileIndexEntry entry) throws IOException { |
| 507 | lock.lock(); |
| 508 | try { |
| 509 | openFile(); |
| 510 | byte[] result = readBytes(entry); |
| 511 | closeFile(); |
| 512 | return result; |
| 513 | } |
| 514 | finally { |
| 515 | lock.unlock(); |
| 516 | } |
| 517 | } |
| 518 | |
| 519 | public int read(String path, byte[] buffer) throws IOException { |
| 520 | lock.lock(); |
| 521 | try { |
| 522 | ZipFileIndexEntry entry = getZipIndexEntry(path); |
| 523 | if (entry == null) |
| 524 | throw new FileNotFoundException(); |
| 525 | return read(entry, buffer); |
| 526 | } |
| 527 | finally { |
| 528 | lock.unlock(); |
| 529 | } |
| 530 | } |
| 531 | |
| 532 | public int read(ZipFileIndexEntry entry, byte[] buffer) |
| 533 | throws IOException { |
| 534 | lock.lock(); |
| 535 | try { |
| 536 | int result = readBytes(entry, buffer); |
| 537 | return result; |
| 538 | } |
| 539 | finally { |
| 540 | lock.unlock(); |
| 541 | } |
| 542 | } |
| 543 | |
| 544 | private byte[] readBytes(ZipFileIndexEntry entry) throws IOException { |
| 545 | byte[] header = getHeader(entry); |
| 546 | int csize = entry.compressedSize; |
| 547 | byte[] cbuf = new byte[csize]; |
| 548 | zipRandomFile.skipBytes(get2ByteLittleEndian(header, 26) + get2ByteLittleEndian(header, 28)); |
| 549 | zipRandomFile.readFully(cbuf, 0, csize); |
| 550 | |
| 551 | // is this compressed - offset 8 in the ZipEntry header |
| 552 | if (get2ByteLittleEndian(header, 8) == 0) |
| 553 | return cbuf; |
| 554 | |
| 555 | int size = entry.size; |
| 556 | byte[] buf = new byte[size]; |
| 557 | if (inflate(cbuf, buf) != size) |
| 558 | throw new ZipException("corrupted zip file"); |
| 559 | |
| 560 | return buf; |
| 561 | } |
| 562 | |
| 563 | /** |
| 564 | * |
| 565 | */ |
| 566 | private int readBytes(ZipFileIndexEntry entry, byte[] buffer) throws IOException { |
| 567 | byte[] header = getHeader(entry); |
| 568 | |
| 569 | // entry is not compressed? |
| 570 | if (get2ByteLittleEndian(header, 8) == 0) { |
| 571 | zipRandomFile.skipBytes(get2ByteLittleEndian(header, 26) + get2ByteLittleEndian(header, 28)); |
| 572 | int offset = 0; |
| 573 | int size = buffer.length; |
| 574 | while (offset < size) { |
| 575 | int count = zipRandomFile.read(buffer, offset, size - offset); |
| 576 | if (count == -1) |
| 577 | break; |
| 578 | offset += count; |
| 579 | } |
| 580 | return entry.size; |
| 581 | } |
| 582 | |
| 583 | int csize = entry.compressedSize; |
| 584 | byte[] cbuf = new byte[csize]; |
| 585 | zipRandomFile.skipBytes(get2ByteLittleEndian(header, 26) + get2ByteLittleEndian(header, 28)); |
| 586 | zipRandomFile.readFully(cbuf, 0, csize); |
| 587 | |
| 588 | int count = inflate(cbuf, buffer); |
| 589 | if (count == -1) |
| 590 | throw new ZipException("corrupted zip file"); |
| 591 | |
| 592 | return entry.size; |
| 593 | } |
| 594 | |
| 595 | //---------------------------------------------------------------------------- |
| 596 | // Zip utilities |
| 597 | //---------------------------------------------------------------------------- |
| 598 | |
| 599 | private byte[] getHeader(ZipFileIndexEntry entry) throws IOException { |
| 600 | zipRandomFile.seek(entry.offset); |
| 601 | byte[] header = new byte[30]; |
| 602 | zipRandomFile.readFully(header); |
| 603 | if (get4ByteLittleEndian(header, 0) != 0x04034b50) |
| 604 | throw new ZipException("corrupted zip file"); |
| 605 | if ((get2ByteLittleEndian(header, 6) & 1) != 0) |
| 606 | throw new ZipException("encrypted zip file"); // offset 6 in the header of the ZipFileEntry |
| 607 | return header; |
| 608 | } |
| 609 | |
| 610 | /* |
| 611 | * Inflate using the java.util.zip.Inflater class |
| 612 | */ |
| 613 | private static Inflater inflater; |
| 614 | private int inflate(byte[] src, byte[] dest) { |
| 615 | |
| 616 | // construct the inflater object or reuse an existing one |
| 617 | if (inflater == null) |
| 618 | inflater = new Inflater(true); |
| 619 | |
| 620 | synchronized (inflater) { |
| 621 | inflater.reset(); |
| 622 | inflater.setInput(src); |
| 623 | try { |
| 624 | return inflater.inflate(dest); |
| 625 | } catch (DataFormatException ex) { |
| 626 | return -1; |
| 627 | } |
| 628 | } |
| 629 | } |
| 630 | |
| 631 | /** |
| 632 | * return the two bytes buf[pos], buf[pos+1] as an unsigned integer in little |
| 633 | * endian format. |
| 634 | */ |
| 635 | private static int get2ByteLittleEndian(byte[] buf, int pos) { |
| 636 | return (buf[pos] & 0xFF) + ((buf[pos+1] & 0xFF) << 8); |
| 637 | } |
| 638 | |
| 639 | /** |
| 640 | * return the 4 bytes buf[i..i+3] as an integer in little endian format. |
| 641 | */ |
| 642 | private static int get4ByteLittleEndian(byte[] buf, int pos) { |
| 643 | return (buf[pos] & 0xFF) + ((buf[pos + 1] & 0xFF) << 8) + |
| 644 | ((buf[pos + 2] & 0xFF) << 16) + ((buf[pos + 3] & 0xFF) << 24); |
| 645 | } |
| 646 | |
| 647 | /* ---------------------------------------------------------------------------- |
| 648 | * ZipDirectory |
| 649 | * ----------------------------------------------------------------------------*/ |
| 650 | |
| 651 | private class ZipDirectory { |
| 652 | private String lastDir; |
| 653 | private int lastStart; |
| 654 | private int lastLen; |
| 655 | |
| 656 | byte[] zipDir; |
| 657 | RandomAccessFile zipRandomFile = null; |
| 658 | ZipFileIndex zipFileIndex = null; |
| 659 | |
| 660 | public ZipDirectory(RandomAccessFile zipRandomFile, long start, long end, ZipFileIndex index) throws IOException { |
| 661 | this.zipRandomFile = zipRandomFile; |
| 662 | this.zipFileIndex = index; |
| 663 | |
| 664 | findCENRecord(start, end); |
| 665 | } |
| 666 | |
| 667 | /* |
| 668 | * Reads zip file central directory. |
| 669 | * For more details see readCEN in zip_util.c from the JDK sources. |
| 670 | * This is a Java port of that function. |
| 671 | */ |
| 672 | private void findCENRecord(long start, long end) throws IOException { |
| 673 | long totalLength = end - start; |
| 674 | int endbuflen = 1024; |
| 675 | byte[] endbuf = new byte[endbuflen]; |
| 676 | long endbufend = end - start; |
| 677 | |
| 678 | // There is a variable-length field after the dir offset record. We need to do consequential search. |
| 679 | while (endbufend >= 22) { |
| 680 | if (endbufend < endbuflen) |
| 681 | endbuflen = (int)endbufend; |
| 682 | long endbufpos = endbufend - endbuflen; |
| 683 | zipRandomFile.seek(start + endbufpos); |
| 684 | zipRandomFile.readFully(endbuf, 0, endbuflen); |
| 685 | int i = endbuflen - 22; |
| 686 | while (i >= 0 && |
| 687 | !(endbuf[i] == 0x50 && |
| 688 | endbuf[i + 1] == 0x4b && |
| 689 | endbuf[i + 2] == 0x05 && |
| 690 | endbuf[i + 3] == 0x06 && |
| 691 | endbufpos + i + 22 + |
| 692 | get2ByteLittleEndian(endbuf, i + 20) == totalLength)) { |
| 693 | i--; |
| 694 | } |
| 695 | |
| 696 | if (i >= 0) { |
| 697 | zipDir = new byte[get4ByteLittleEndian(endbuf, i + 12) + 2]; |
| 698 | zipDir[0] = endbuf[i + 10]; |
| 699 | zipDir[1] = endbuf[i + 11]; |
| 700 | zipRandomFile.seek(start + get4ByteLittleEndian(endbuf, i + 16)); |
| 701 | zipRandomFile.readFully(zipDir, 2, zipDir.length - 2); |
| 702 | return; |
| 703 | } else { |
| 704 | endbufend = endbufpos + 21; |
| 705 | } |
| 706 | } |
| 707 | throw new ZipException("cannot read zip file"); |
| 708 | } |
| 709 | private void buildIndex() throws IOException { |
| 710 | int entryCount = get2ByteLittleEndian(zipDir, 0); |
| 711 | |
| 712 | entries = new ZipFileIndexEntry[entryCount]; |
| 713 | // Add each of the files |
| 714 | if (entryCount > 0) { |
| 715 | directories = new HashMap<String, DirectoryEntry>(); |
| 716 | ArrayList<ZipFileIndexEntry> entryList = new ArrayList<ZipFileIndexEntry>(); |
| 717 | int pos = 2; |
| 718 | for (int i = 0; i < entryCount; i++) { |
| 719 | pos = readEntry(pos, entryList, directories); |
| 720 | } |
| 721 | |
| 722 | // Add the accumulated dirs into the same list |
| 723 | Iterator i = directories.keySet().iterator(); |
| 724 | while (i.hasNext()) { |
| 725 | ZipFileIndexEntry zipFileIndexEntry = new ZipFileIndexEntry( (String) i.next()); |
| 726 | zipFileIndexEntry.isDir = true; |
| 727 | entryList.add(zipFileIndexEntry); |
| 728 | } |
| 729 | |
| 730 | entries = entryList.toArray(new ZipFileIndexEntry[entryList.size()]); |
| 731 | Arrays.sort(entries); |
| 732 | } else { |
| 733 | cleanupState(); |
| 734 | } |
| 735 | } |
| 736 | |
| 737 | private int readEntry(int pos, List<ZipFileIndexEntry> entryList, |
| 738 | Map<String, DirectoryEntry> directories) throws IOException { |
| 739 | if (get4ByteLittleEndian(zipDir, pos) != 0x02014b50) { |
| 740 | throw new ZipException("cannot read zip file entry"); |
| 741 | } |
| 742 | |
| 743 | int dirStart = pos + 46; |
| 744 | int fileStart = dirStart; |
| 745 | int fileEnd = fileStart + get2ByteLittleEndian(zipDir, pos + 28); |
| 746 | |
| 747 | if (zipFileIndex.symbolFilePrefixLength != 0 && |
| 748 | ((fileEnd - fileStart) >= symbolFilePrefixLength)) { |
| 749 | dirStart += zipFileIndex.symbolFilePrefixLength; |
| 750 | fileStart += zipFileIndex.symbolFilePrefixLength; |
| 751 | } |
| 752 | |
| 753 | // Use the OS's path separator. Keep the position of the last one. |
| 754 | for (int index = fileStart; index < fileEnd; index++) { |
| 755 | byte nextByte = zipDir[index]; |
| 756 | if (nextByte == (byte)'\\' || nextByte == (byte)'/') { |
| 757 | zipDir[index] = (byte)File.separatorChar; |
| 758 | fileStart = index + 1; |
| 759 | } |
| 760 | } |
| 761 | |
| 762 | String directory = null; |
| 763 | if (fileStart == dirStart) |
| 764 | directory = ""; |
| 765 | else if (lastDir != null && lastLen == fileStart - dirStart - 1) { |
| 766 | int index = lastLen - 1; |
| 767 | while (zipDir[lastStart + index] == zipDir[dirStart + index]) { |
| 768 | if (index == 0) { |
| 769 | directory = lastDir; |
| 770 | break; |
| 771 | } |
| 772 | index--; |
| 773 | } |
| 774 | } |
| 775 | |
| 776 | // Sub directories |
| 777 | if (directory == null) { |
| 778 | lastStart = dirStart; |
| 779 | lastLen = fileStart - dirStart - 1; |
| 780 | |
| 781 | directory = new String(zipDir, dirStart, lastLen, "UTF-8").intern(); |
| 782 | lastDir = directory; |
| 783 | |
| 784 | // Enter also all the parent directories |
| 785 | String tempDirectory = directory; |
| 786 | |
| 787 | while (directories.get(tempDirectory) == null) { |
| 788 | directories.put(tempDirectory, new DirectoryEntry(tempDirectory, zipFileIndex)); |
| 789 | int separator = tempDirectory.lastIndexOf(File.separatorChar); |
| 790 | if (separator == -1) |
| 791 | break; |
| 792 | tempDirectory = tempDirectory.substring(0, separator); |
| 793 | } |
| 794 | } |
| 795 | else { |
| 796 | directory = directory.intern(); |
| 797 | if (directories.get(directory) == null) { |
| 798 | directories.put(directory, new DirectoryEntry(directory, zipFileIndex)); |
| 799 | } |
| 800 | } |
| 801 | |
| 802 | // For each dir create also a file |
| 803 | if (fileStart != fileEnd) { |
| 804 | ZipFileIndexEntry entry = new ZipFileIndexEntry(directory, |
| 805 | new String(zipDir, fileStart, fileEnd - fileStart, "UTF-8")); |
| 806 | |
| 807 | entry.setNativeTime(get4ByteLittleEndian(zipDir, pos + 12)); |
| 808 | entry.compressedSize = get4ByteLittleEndian(zipDir, pos + 20); |
| 809 | entry.size = get4ByteLittleEndian(zipDir, pos + 24); |
| 810 | entry.offset = get4ByteLittleEndian(zipDir, pos + 42); |
| 811 | entryList.add(entry); |
| 812 | } |
| 813 | |
| 814 | return pos + 46 + |
| 815 | get2ByteLittleEndian(zipDir, pos + 28) + |
| 816 | get2ByteLittleEndian(zipDir, pos + 30) + |
| 817 | get2ByteLittleEndian(zipDir, pos + 32); |
| 818 | } |
| 819 | } |
| 820 | |
| 821 | /** |
| 822 | * Returns the last modified timestamp of a zip file. |
| 823 | * @return long |
| 824 | */ |
| 825 | public long getZipFileLastModified() throws IOException { |
| 826 | lock.lock(); |
| 827 | try { |
| 828 | checkIndex(); |
| 829 | return zipFileLastModified; |
| 830 | } |
| 831 | finally { |
| 832 | lock.unlock(); |
| 833 | } |
| 834 | } |
| 835 | |
| 836 | /** ------------------------------------------------------------------------ |
| 837 | * DirectoryEntry class |
| 838 | * -------------------------------------------------------------------------*/ |
| 839 | static class DirectoryEntry { |
| 840 | private boolean filesInited; |
| 841 | private boolean directoriesInited; |
| 842 | private boolean zipFileEntriesInited; |
| 843 | private boolean entriesInited; |
| 844 | |
| 845 | private long writtenOffsetOffset = 0; |
| 846 | |
| 847 | private String dirName; |
| 848 | |
| 849 | private com.sun.tools.javac.util.List<String> zipFileEntriesFiles = com.sun.tools.javac.util.List.<String>nil(); |
| 850 | private com.sun.tools.javac.util.List<String> zipFileEntriesDirectories = com.sun.tools.javac.util.List.<String>nil(); |
| 851 | private com.sun.tools.javac.util.List<ZipFileIndexEntry> zipFileEntries = com.sun.tools.javac.util.List.<ZipFileIndexEntry>nil(); |
| 852 | |
| 853 | private List<ZipFileIndexEntry> entries = new ArrayList<ZipFileIndexEntry>(); |
| 854 | |
| 855 | private ZipFileIndex zipFileIndex; |
| 856 | |
| 857 | private int numEntries; |
| 858 | |
| 859 | DirectoryEntry(String dirName, ZipFileIndex index) { |
| 860 | filesInited = false; |
| 861 | directoriesInited = false; |
| 862 | entriesInited = false; |
| 863 | |
| 864 | if (File.separatorChar == '/') { |
| 865 | dirName.replace('\\', '/'); |
| 866 | } |
| 867 | else { |
| 868 | dirName.replace('/', '\\'); |
| 869 | } |
| 870 | |
| 871 | this.dirName = dirName.intern(); |
| 872 | this.zipFileIndex = index; |
| 873 | } |
| 874 | |
| 875 | private com.sun.tools.javac.util.List<String> getFiles() { |
| 876 | if (filesInited) { |
| 877 | return zipFileEntriesFiles; |
| 878 | } |
| 879 | |
| 880 | initEntries(); |
| 881 | |
| 882 | for (ZipFileIndexEntry e : entries) { |
| 883 | if (!e.isDir) { |
| 884 | zipFileEntriesFiles = zipFileEntriesFiles.append(e.name); |
| 885 | } |
| 886 | } |
| 887 | filesInited = true; |
| 888 | return zipFileEntriesFiles; |
| 889 | } |
| 890 | |
| 891 | private com.sun.tools.javac.util.List<String> getDirectories() { |
| 892 | if (directoriesInited) { |
| 893 | return zipFileEntriesFiles; |
| 894 | } |
| 895 | |
| 896 | initEntries(); |
| 897 | |
| 898 | for (ZipFileIndexEntry e : entries) { |
| 899 | if (e.isDir) { |
| 900 | zipFileEntriesDirectories = zipFileEntriesDirectories.append(e.name); |
| 901 | } |
| 902 | } |
| 903 | |
| 904 | directoriesInited = true; |
| 905 | |
| 906 | return zipFileEntriesDirectories; |
| 907 | } |
| 908 | |
| 909 | private com.sun.tools.javac.util.List<ZipFileIndexEntry> getEntries() { |
| 910 | if (zipFileEntriesInited) { |
| 911 | return zipFileEntries; |
| 912 | } |
| 913 | |
| 914 | initEntries(); |
| 915 | |
| 916 | zipFileEntries = com.sun.tools.javac.util.List.nil(); |
| 917 | for (ZipFileIndexEntry zfie : entries) { |
| 918 | zipFileEntries = zipFileEntries.append(zfie); |
| 919 | } |
| 920 | |
| 921 | zipFileEntriesInited = true; |
| 922 | |
| 923 | return zipFileEntries; |
| 924 | } |
| 925 | |
| 926 | private ZipFileIndexEntry getEntry(String rootName) { |
| 927 | initEntries(); |
| 928 | int index = Collections.binarySearch(entries, new ZipFileIndexEntry(dirName, rootName)); |
| 929 | if (index < 0) { |
| 930 | return null; |
| 931 | } |
| 932 | |
| 933 | return entries.get(index); |
| 934 | } |
| 935 | |
| 936 | private void initEntries() { |
| 937 | if (entriesInited) { |
| 938 | return; |
| 939 | } |
| 940 | |
| 941 | if (!zipFileIndex.readFromIndex) { |
| 942 | int from = -Arrays.binarySearch(zipFileIndex.entries, |
| 943 | new ZipFileIndexEntry(dirName, ZipFileIndex.MIN_CHAR)) - 1; |
| 944 | int to = -Arrays.binarySearch(zipFileIndex.entries, |
| 945 | new ZipFileIndexEntry(dirName, MAX_CHAR)) - 1; |
| 946 | |
| 947 | boolean emptyList = false; |
| 948 | |
| 949 | for (int i = from; i < to; i++) { |
| 950 | entries.add(zipFileIndex.entries[i]); |
| 951 | } |
| 952 | } else { |
| 953 | File indexFile = zipFileIndex.getIndexFile(); |
| 954 | if (indexFile != null) { |
| 955 | RandomAccessFile raf = null; |
| 956 | try { |
| 957 | raf = new RandomAccessFile(indexFile, "r"); |
| 958 | raf.seek(writtenOffsetOffset); |
| 959 | |
| 960 | for (int nFiles = 0; nFiles < numEntries; nFiles++) { |
| 961 | // Read the name bytes |
| 962 | int zfieNameBytesLen = raf.readInt(); |
| 963 | byte [] zfieNameBytes = new byte[zfieNameBytesLen]; |
| 964 | raf.read(zfieNameBytes); |
| 965 | String eName = new String(zfieNameBytes, "UTF-8"); |
| 966 | |
| 967 | // Read isDir |
| 968 | boolean eIsDir = raf.readByte() == (byte)0 ? false : true; |
| 969 | |
| 970 | // Read offset of bytes in the real Jar/Zip file |
| 971 | int eOffset = raf.readInt(); |
| 972 | |
| 973 | // Read size of the file in the real Jar/Zip file |
| 974 | int eSize = raf.readInt(); |
| 975 | |
| 976 | // Read compressed size of the file in the real Jar/Zip file |
| 977 | int eCsize = raf.readInt(); |
| 978 | |
| 979 | // Read java time stamp of the file in the real Jar/Zip file |
| 980 | long eJavaTimestamp = raf.readLong(); |
| 981 | |
| 982 | ZipFileIndexEntry rfie = new ZipFileIndexEntry(dirName, eName); |
| 983 | rfie.isDir = eIsDir; |
| 984 | rfie.offset = eOffset; |
| 985 | rfie.size = eSize; |
| 986 | rfie.compressedSize = eCsize; |
| 987 | rfie.javatime = eJavaTimestamp; |
| 988 | entries.add(rfie); |
| 989 | } |
| 990 | } catch (Throwable t) { |
| 991 | // Do nothing |
| 992 | } finally { |
| 993 | try { |
| 994 | if (raf == null) { |
| 995 | raf.close(); |
| 996 | } |
| 997 | } catch (Throwable t) { |
| 998 | // Do nothing |
| 999 | } |
| 1000 | } |
| 1001 | } |
| 1002 | } |
| 1003 | |
| 1004 | entriesInited = true; |
| 1005 | } |
| 1006 | |
| 1007 | List<ZipFileIndexEntry> getEntriesAsCollection() { |
| 1008 | initEntries(); |
| 1009 | |
| 1010 | return entries; |
| 1011 | } |
| 1012 | } |
| 1013 | |
| 1014 | private boolean readIndex() { |
| 1015 | if (triedToReadIndex || !usePreindexedCache) { |
| 1016 | return false; |
| 1017 | } |
| 1018 | |
| 1019 | boolean ret = false; |
| 1020 | lock.lock(); |
| 1021 | try { |
| 1022 | triedToReadIndex = true; |
| 1023 | RandomAccessFile raf = null; |
| 1024 | try { |
| 1025 | File indexFileName = getIndexFile(); |
| 1026 | raf = new RandomAccessFile(indexFileName, "r"); |
| 1027 | |
| 1028 | long fileStamp = raf.readLong(); |
| 1029 | if (zipFile.lastModified() != fileStamp) { |
| 1030 | ret = false; |
| 1031 | } else { |
| 1032 | directories = new HashMap<String, DirectoryEntry>(); |
| 1033 | int numDirs = raf.readInt(); |
| 1034 | for (int nDirs = 0; nDirs < numDirs; nDirs++) { |
| 1035 | int dirNameBytesLen = raf.readInt(); |
| 1036 | byte [] dirNameBytes = new byte[dirNameBytesLen]; |
| 1037 | raf.read(dirNameBytes); |
| 1038 | |
| 1039 | String dirNameStr = new String(dirNameBytes, "UTF-8"); |
| 1040 | DirectoryEntry de = new DirectoryEntry(dirNameStr, this); |
| 1041 | de.numEntries = raf.readInt(); |
| 1042 | de.writtenOffsetOffset = raf.readLong(); |
| 1043 | directories.put(dirNameStr, de); |
| 1044 | } |
| 1045 | ret = true; |
| 1046 | zipFileLastModified = fileStamp; |
| 1047 | } |
| 1048 | } catch (Throwable t) { |
| 1049 | // Do nothing |
| 1050 | } finally { |
| 1051 | if (raf != null) { |
| 1052 | try { |
| 1053 | raf.close(); |
| 1054 | } catch (Throwable tt) { |
| 1055 | // Do nothing |
| 1056 | } |
| 1057 | } |
| 1058 | } |
| 1059 | if (ret == true) { |
| 1060 | readFromIndex = true; |
| 1061 | } |
| 1062 | } |
| 1063 | finally { |
| 1064 | lock.unlock(); |
| 1065 | } |
| 1066 | |
| 1067 | return ret; |
| 1068 | } |
| 1069 | |
| 1070 | private boolean writeIndex() { |
| 1071 | boolean ret = false; |
| 1072 | if (readFromIndex || !usePreindexedCache) { |
| 1073 | return true; |
| 1074 | } |
| 1075 | |
| 1076 | if (!writeIndex) { |
| 1077 | return true; |
| 1078 | } |
| 1079 | |
| 1080 | File indexFile = getIndexFile(); |
| 1081 | if (indexFile == null) { |
| 1082 | return false; |
| 1083 | } |
| 1084 | |
| 1085 | RandomAccessFile raf = null; |
| 1086 | long writtenSoFar = 0; |
| 1087 | try { |
| 1088 | raf = new RandomAccessFile(indexFile, "rw"); |
| 1089 | |
| 1090 | raf.writeLong(zipFileLastModified); |
| 1091 | writtenSoFar += 8; |
| 1092 | |
| 1093 | |
| 1094 | Iterator<String> iterDirName = directories.keySet().iterator(); |
| 1095 | List<DirectoryEntry> directoriesToWrite = new ArrayList<DirectoryEntry>(); |
| 1096 | Map<String, Long> offsets = new HashMap<String, Long>(); |
| 1097 | raf.writeInt(directories.keySet().size()); |
| 1098 | writtenSoFar += 4; |
| 1099 | |
| 1100 | while(iterDirName.hasNext()) { |
| 1101 | String dirName = iterDirName.next(); |
| 1102 | DirectoryEntry dirEntry = directories.get(dirName); |
| 1103 | |
| 1104 | directoriesToWrite.add(dirEntry); |
| 1105 | |
| 1106 | // Write the dir name bytes |
| 1107 | byte [] dirNameBytes = dirName.getBytes("UTF-8"); |
| 1108 | int dirNameBytesLen = dirNameBytes.length; |
| 1109 | raf.writeInt(dirNameBytesLen); |
| 1110 | writtenSoFar += 4; |
| 1111 | |
| 1112 | raf.write(dirNameBytes); |
| 1113 | writtenSoFar += dirNameBytesLen; |
| 1114 | |
| 1115 | // Write the number of files in the dir |
| 1116 | List dirEntries = dirEntry.getEntriesAsCollection(); |
| 1117 | raf.writeInt(dirEntries.size()); |
| 1118 | writtenSoFar += 4; |
| 1119 | |
| 1120 | offsets.put(dirName, new Long(writtenSoFar)); |
| 1121 | |
| 1122 | // Write the offset of the file's data in the dir |
| 1123 | dirEntry.writtenOffsetOffset = 0L; |
| 1124 | raf.writeLong(0L); |
| 1125 | writtenSoFar += 8; |
| 1126 | } |
| 1127 | |
| 1128 | for (DirectoryEntry de : directoriesToWrite) { |
| 1129 | // Fix up the offset in the directory table |
| 1130 | long currFP = raf.getFilePointer(); |
| 1131 | |
| 1132 | long offsetOffset = offsets.get(de.dirName).longValue(); |
| 1133 | raf.seek(offsetOffset); |
| 1134 | raf.writeLong(writtenSoFar); |
| 1135 | |
| 1136 | raf.seek(currFP); |
| 1137 | |
| 1138 | // Now write each of the files in the DirectoryEntry |
| 1139 | List<ZipFileIndexEntry> entries = de.getEntriesAsCollection(); |
| 1140 | for (ZipFileIndexEntry zfie : entries) { |
| 1141 | // Write the name bytes |
| 1142 | byte [] zfieNameBytes = zfie.name.getBytes("UTF-8"); |
| 1143 | int zfieNameBytesLen = zfieNameBytes.length; |
| 1144 | raf.writeInt(zfieNameBytesLen); |
| 1145 | writtenSoFar += 4; |
| 1146 | raf.write(zfieNameBytes); |
| 1147 | writtenSoFar += zfieNameBytesLen; |
| 1148 | |
| 1149 | // Write isDir |
| 1150 | raf.writeByte(zfie.isDir ? (byte)1 : (byte)0); |
| 1151 | writtenSoFar += 1; |
| 1152 | |
| 1153 | // Write offset of bytes in the real Jar/Zip file |
| 1154 | raf.writeInt(zfie.offset); |
| 1155 | writtenSoFar += 4; |
| 1156 | |
| 1157 | // Write size of the file in the real Jar/Zip file |
| 1158 | raf.writeInt(zfie.size); |
| 1159 | writtenSoFar += 4; |
| 1160 | |
| 1161 | // Write compressed size of the file in the real Jar/Zip file |
| 1162 | raf.writeInt(zfie.compressedSize); |
| 1163 | writtenSoFar += 4; |
| 1164 | |
| 1165 | // Write java time stamp of the file in the real Jar/Zip file |
| 1166 | raf.writeLong(zfie.getLastModified()); |
| 1167 | writtenSoFar += 8; |
| 1168 | } |
| 1169 | } |
| 1170 | } catch (Throwable t) { |
| 1171 | // Do nothing |
| 1172 | } finally { |
| 1173 | try { |
| 1174 | if (raf != null) { |
| 1175 | raf.close(); |
| 1176 | } |
| 1177 | } catch(IOException ioe) { |
| 1178 | // Do nothing |
| 1179 | } |
| 1180 | } |
| 1181 | |
| 1182 | return ret; |
| 1183 | } |
| 1184 | |
| 1185 | public boolean writeZipIndex() { |
| 1186 | lock.lock(); |
| 1187 | try { |
| 1188 | return writeIndex(); |
| 1189 | } |
| 1190 | finally { |
| 1191 | lock.unlock(); |
| 1192 | } |
| 1193 | } |
| 1194 | |
| 1195 | private File getIndexFile() { |
| 1196 | if (zipIndexFile == null) { |
| 1197 | if (zipFile == null) { |
| 1198 | return null; |
| 1199 | } |
| 1200 | |
| 1201 | zipIndexFile = new File((preindexedCacheLocation == null ? "" : preindexedCacheLocation) + |
| 1202 | zipFile.getName() + ".index"); |
| 1203 | } |
| 1204 | |
| 1205 | return zipIndexFile; |
| 1206 | } |
| 1207 | |
| 1208 | public File getZipFile() { |
| 1209 | return zipFile; |
| 1210 | } |
| 1211 | } |