Thu, 22 May 2008 15:51:41 -0700
6705945: com.sun.tools.javac.zip files do not have valid copyright
Reviewed-by: mcimadamore
jjg@36 | 1 | /* |
jjg@36 | 2 | * Copyright 2007-2008 Sun Microsystems, Inc. All Rights Reserved. |
jjg@36 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
jjg@36 | 4 | * |
jjg@36 | 5 | * This code is free software; you can redistribute it and/or modify it |
jjg@36 | 6 | * under the terms of the GNU General Public License version 2 only, as |
jjg@36 | 7 | * published by the Free Software Foundation. Sun designates this |
jjg@36 | 8 | * particular file as subject to the "Classpath" exception as provided |
jjg@36 | 9 | * by Sun in the LICENSE file that accompanied this code. |
jjg@36 | 10 | * |
jjg@36 | 11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
jjg@36 | 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
jjg@36 | 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
jjg@36 | 14 | * version 2 for more details (a copy is included in the LICENSE file that |
jjg@36 | 15 | * accompanied this code). |
jjg@36 | 16 | * |
jjg@36 | 17 | * You should have received a copy of the GNU General Public License version |
jjg@36 | 18 | * 2 along with this work; if not, write to the Free Software Foundation, |
jjg@36 | 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
jjg@36 | 20 | * |
jjg@36 | 21 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
jjg@36 | 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
jjg@36 | 23 | * have any questions. |
jjg@36 | 24 | */ |
jjg@36 | 25 | |
duke@1 | 26 | package com.sun.tools.javac.zip; |
duke@1 | 27 | |
duke@1 | 28 | import java.io.*; |
duke@1 | 29 | import java.text.MessageFormat; |
duke@1 | 30 | import java.util.*; |
duke@1 | 31 | import java.util.List; |
duke@1 | 32 | import java.util.concurrent.locks.ReentrantLock; |
duke@1 | 33 | import java.util.zip.*; |
duke@1 | 34 | |
duke@1 | 35 | /** This class implements building of index of a zip archive and access to it's context. |
duke@1 | 36 | * It also uses prebuild index if available. It supports invocations where it will |
duke@1 | 37 | * serialize an optimized zip index file to disk. |
duke@1 | 38 | * |
duke@1 | 39 | * In oreder to use secondary index file make sure the option "usezipindex" is in the Options object, |
duke@1 | 40 | * when JavacFileManager is invoked. (You can pass "-XDusezipindex" on the command line. |
duke@1 | 41 | * |
duke@1 | 42 | * Location where to look for/generate optimized zip index files can be provided using |
duke@1 | 43 | * "-XDcachezipindexdir=<directory>". If this flag is not provided, the dfault location is |
duke@1 | 44 | * the value of the "java.io.tmpdir" system property. |
duke@1 | 45 | * |
duke@1 | 46 | * If key "-XDwritezipindexfiles" is specified, there will be new optimized index file |
duke@1 | 47 | * created for each archive, used by the compiler for compilation, at location, |
duke@1 | 48 | * specified by "cachezipindexdir" option. |
duke@1 | 49 | * |
duke@1 | 50 | * If nonBatchMode option is specified (-XDnonBatchMode) the compiler will use timestamp |
duke@1 | 51 | * checking to reindex the zip files if it is needed. In batch mode the timestamps are not checked |
duke@1 | 52 | * and the compiler uses the cached indexes. |
duke@1 | 53 | */ |
duke@1 | 54 | public class ZipFileIndex { |
duke@1 | 55 | private static final String MIN_CHAR = String.valueOf(Character.MIN_VALUE); |
duke@1 | 56 | private static final String MAX_CHAR = String.valueOf(Character.MAX_VALUE); |
duke@1 | 57 | |
duke@1 | 58 | public final static long NOT_MODIFIED = Long.MIN_VALUE; |
duke@1 | 59 | |
duke@1 | 60 | private static Map<File, ZipFileIndex> zipFileIndexCache = new HashMap<File, ZipFileIndex>(); |
duke@1 | 61 | private static ReentrantLock lock = new ReentrantLock(); |
duke@1 | 62 | |
duke@1 | 63 | private static boolean NON_BATCH_MODE = System.getProperty("nonBatchMode") != null;// TODO: Use -XD compiler switch for this. |
duke@1 | 64 | |
duke@1 | 65 | private Map<String, DirectoryEntry> directories = Collections.<String, DirectoryEntry>emptyMap(); |
duke@1 | 66 | private Set<String> allDirs = Collections.<String>emptySet(); |
duke@1 | 67 | |
duke@1 | 68 | // ZipFileIndex data entries |
duke@1 | 69 | private File zipFile; |
duke@1 | 70 | private long zipFileLastModified = NOT_MODIFIED; |
duke@1 | 71 | private RandomAccessFile zipRandomFile; |
duke@1 | 72 | private ZipFileIndexEntry[] entries; |
duke@1 | 73 | |
duke@1 | 74 | private boolean readFromIndex = false; |
duke@1 | 75 | private File zipIndexFile = null; |
duke@1 | 76 | private boolean triedToReadIndex = false; |
duke@1 | 77 | private int symbolFilePrefixLength = 0; |
duke@1 | 78 | private boolean hasPopulatedData = false; |
duke@1 | 79 | private long lastReferenceTimeStamp = NOT_MODIFIED; |
duke@1 | 80 | |
duke@1 | 81 | private boolean usePreindexedCache = false; |
duke@1 | 82 | private String preindexedCacheLocation = null; |
duke@1 | 83 | |
duke@1 | 84 | private boolean writeIndex = false; |
duke@1 | 85 | |
duke@1 | 86 | /** |
duke@1 | 87 | * Returns a list of all ZipFileIndex entries |
duke@1 | 88 | * |
duke@1 | 89 | * @return A list of ZipFileIndex entries, or an empty list |
duke@1 | 90 | */ |
duke@1 | 91 | public static List<ZipFileIndex> getZipFileIndexes() { |
duke@1 | 92 | return getZipFileIndexes(false); |
duke@1 | 93 | } |
duke@1 | 94 | |
duke@1 | 95 | /** |
duke@1 | 96 | * Returns a list of all ZipFileIndex entries |
duke@1 | 97 | * |
duke@1 | 98 | * @param openedOnly If true it returns a list of only opened ZipFileIndex entries, otherwise |
duke@1 | 99 | * all ZipFileEntry(s) are included into the list. |
duke@1 | 100 | * @return A list of ZipFileIndex entries, or an empty list |
duke@1 | 101 | */ |
duke@1 | 102 | public static List<ZipFileIndex> getZipFileIndexes(boolean openedOnly) { |
duke@1 | 103 | List<ZipFileIndex> zipFileIndexes = new ArrayList<ZipFileIndex>(); |
duke@1 | 104 | lock.lock(); |
duke@1 | 105 | try { |
duke@1 | 106 | zipFileIndexes.addAll(zipFileIndexCache.values()); |
duke@1 | 107 | |
duke@1 | 108 | if (openedOnly) { |
duke@1 | 109 | for(ZipFileIndex elem : zipFileIndexes) { |
duke@1 | 110 | if (!elem.isOpen()) { |
duke@1 | 111 | zipFileIndexes.remove(elem); |
duke@1 | 112 | } |
duke@1 | 113 | } |
duke@1 | 114 | } |
duke@1 | 115 | } |
duke@1 | 116 | finally { |
duke@1 | 117 | lock.unlock(); |
duke@1 | 118 | } |
duke@1 | 119 | return zipFileIndexes; |
duke@1 | 120 | } |
duke@1 | 121 | |
duke@1 | 122 | public boolean isOpen() { |
duke@1 | 123 | lock.lock(); |
duke@1 | 124 | try { |
duke@1 | 125 | return zipRandomFile != null; |
duke@1 | 126 | } |
duke@1 | 127 | finally { |
duke@1 | 128 | lock.unlock(); |
duke@1 | 129 | } |
duke@1 | 130 | } |
duke@1 | 131 | |
duke@1 | 132 | public static ZipFileIndex getZipFileIndex(File zipFile, int symbolFilePrefixLen, boolean useCache, String cacheLocation, boolean writeIndex) throws IOException { |
duke@1 | 133 | ZipFileIndex zi = null; |
duke@1 | 134 | lock.lock(); |
duke@1 | 135 | try { |
duke@1 | 136 | zi = getExistingZipIndex(zipFile); |
duke@1 | 137 | |
duke@1 | 138 | if (zi == null || (zi != null && zipFile.lastModified() != zi.zipFileLastModified)) { |
duke@1 | 139 | zi = new ZipFileIndex(zipFile, symbolFilePrefixLen, writeIndex, |
duke@1 | 140 | useCache, cacheLocation); |
duke@1 | 141 | zipFileIndexCache.put(zipFile, zi); |
duke@1 | 142 | } |
duke@1 | 143 | } |
duke@1 | 144 | finally { |
duke@1 | 145 | lock.unlock(); |
duke@1 | 146 | } |
duke@1 | 147 | return zi; |
duke@1 | 148 | } |
duke@1 | 149 | |
duke@1 | 150 | public static ZipFileIndex getExistingZipIndex(File zipFile) { |
duke@1 | 151 | lock.lock(); |
duke@1 | 152 | try { |
duke@1 | 153 | return zipFileIndexCache.get(zipFile); |
duke@1 | 154 | } |
duke@1 | 155 | finally { |
duke@1 | 156 | lock.unlock(); |
duke@1 | 157 | } |
duke@1 | 158 | } |
duke@1 | 159 | |
duke@1 | 160 | public static void clearCache() { |
duke@1 | 161 | lock.lock(); |
duke@1 | 162 | try { |
duke@1 | 163 | zipFileIndexCache.clear(); |
duke@1 | 164 | } |
duke@1 | 165 | finally { |
duke@1 | 166 | lock.unlock(); |
duke@1 | 167 | } |
duke@1 | 168 | } |
duke@1 | 169 | |
duke@1 | 170 | public static void clearCache(long timeNotUsed) { |
duke@1 | 171 | lock.lock(); |
duke@1 | 172 | try { |
duke@1 | 173 | Iterator<File> cachedFileIterator = zipFileIndexCache.keySet().iterator(); |
duke@1 | 174 | while (cachedFileIterator.hasNext()) { |
duke@1 | 175 | File cachedFile = cachedFileIterator.next(); |
duke@1 | 176 | ZipFileIndex cachedZipIndex = zipFileIndexCache.get(cachedFile); |
duke@1 | 177 | if (cachedZipIndex != null) { |
duke@1 | 178 | long timeToTest = cachedZipIndex.lastReferenceTimeStamp + timeNotUsed; |
duke@1 | 179 | if (timeToTest < cachedZipIndex.lastReferenceTimeStamp || // Overflow... |
duke@1 | 180 | System.currentTimeMillis() > timeToTest) { |
duke@1 | 181 | zipFileIndexCache.remove(cachedFile); |
duke@1 | 182 | } |
duke@1 | 183 | } |
duke@1 | 184 | } |
duke@1 | 185 | } |
duke@1 | 186 | finally { |
duke@1 | 187 | lock.unlock(); |
duke@1 | 188 | } |
duke@1 | 189 | } |
duke@1 | 190 | |
duke@1 | 191 | public static void removeFromCache(File file) { |
duke@1 | 192 | lock.lock(); |
duke@1 | 193 | try { |
duke@1 | 194 | zipFileIndexCache.remove(file); |
duke@1 | 195 | } |
duke@1 | 196 | finally { |
duke@1 | 197 | lock.unlock(); |
duke@1 | 198 | } |
duke@1 | 199 | } |
duke@1 | 200 | |
duke@1 | 201 | /** Sets already opened list of ZipFileIndexes from an outside client |
duke@1 | 202 | * of the compiler. This functionality should be used in a non-batch clients of the compiler. |
duke@1 | 203 | */ |
duke@1 | 204 | public static void setOpenedIndexes(List<ZipFileIndex>indexes) throws IllegalStateException { |
duke@1 | 205 | lock.lock(); |
duke@1 | 206 | try { |
duke@1 | 207 | if (zipFileIndexCache.isEmpty()) { |
duke@1 | 208 | throw new IllegalStateException("Setting opened indexes should be called only when the ZipFileCache is empty. Call JavacFileManager.flush() before calling this method."); |
duke@1 | 209 | } |
duke@1 | 210 | |
duke@1 | 211 | for (ZipFileIndex zfi : indexes) { |
duke@1 | 212 | zipFileIndexCache.put(zfi.zipFile, zfi); |
duke@1 | 213 | } |
duke@1 | 214 | } |
duke@1 | 215 | finally { |
duke@1 | 216 | lock.unlock(); |
duke@1 | 217 | } |
duke@1 | 218 | } |
duke@1 | 219 | |
duke@1 | 220 | private ZipFileIndex(File zipFile, int symbolFilePrefixLen, boolean writeIndex, |
duke@1 | 221 | boolean useCache, String cacheLocation) throws IOException { |
duke@1 | 222 | this.zipFile = zipFile; |
duke@1 | 223 | this.symbolFilePrefixLength = symbolFilePrefixLen; |
duke@1 | 224 | this.writeIndex = writeIndex; |
duke@1 | 225 | this.usePreindexedCache = useCache; |
duke@1 | 226 | this.preindexedCacheLocation = cacheLocation; |
duke@1 | 227 | |
duke@1 | 228 | if (zipFile != null) { |
duke@1 | 229 | this.zipFileLastModified = zipFile.lastModified(); |
duke@1 | 230 | } |
duke@1 | 231 | |
duke@1 | 232 | // Validate integrity of the zip file |
duke@1 | 233 | checkIndex(); |
duke@1 | 234 | } |
duke@1 | 235 | |
duke@1 | 236 | public String toString() { |
duke@1 | 237 | return "ZipFileIndex of file:(" + zipFile + ")"; |
duke@1 | 238 | } |
duke@1 | 239 | |
duke@1 | 240 | // Just in case... |
duke@1 | 241 | protected void finalize() { |
duke@1 | 242 | closeFile(); |
duke@1 | 243 | } |
duke@1 | 244 | |
duke@1 | 245 | private boolean isUpToDate() { |
duke@1 | 246 | if (zipFile != null && |
duke@1 | 247 | ((!NON_BATCH_MODE) || zipFileLastModified == zipFile.lastModified()) && |
duke@1 | 248 | hasPopulatedData) { |
duke@1 | 249 | return true; |
duke@1 | 250 | } |
duke@1 | 251 | |
duke@1 | 252 | return false; |
duke@1 | 253 | } |
duke@1 | 254 | |
duke@1 | 255 | /** |
duke@1 | 256 | * Here we need to make sure that the ZipFileIndex is valid. Check the timestamp of the file and |
duke@1 | 257 | * if its the same as the one at the time the index was build we don't need to reopen anything. |
duke@1 | 258 | */ |
duke@1 | 259 | private void checkIndex() throws IOException { |
duke@1 | 260 | boolean isUpToDate = true; |
duke@1 | 261 | if (!isUpToDate()) { |
duke@1 | 262 | closeFile(); |
duke@1 | 263 | isUpToDate = false; |
duke@1 | 264 | } |
duke@1 | 265 | |
duke@1 | 266 | if (zipRandomFile != null || isUpToDate) { |
duke@1 | 267 | lastReferenceTimeStamp = System.currentTimeMillis(); |
duke@1 | 268 | return; |
duke@1 | 269 | } |
duke@1 | 270 | |
duke@1 | 271 | hasPopulatedData = true; |
duke@1 | 272 | |
duke@1 | 273 | if (readIndex()) { |
duke@1 | 274 | lastReferenceTimeStamp = System.currentTimeMillis(); |
duke@1 | 275 | return; |
duke@1 | 276 | } |
duke@1 | 277 | |
duke@1 | 278 | directories = Collections.<String, DirectoryEntry>emptyMap(); |
duke@1 | 279 | allDirs = Collections.<String>emptySet(); |
duke@1 | 280 | |
duke@1 | 281 | try { |
duke@1 | 282 | openFile(); |
duke@1 | 283 | long totalLength = zipRandomFile.length(); |
duke@1 | 284 | ZipDirectory directory = new ZipDirectory(zipRandomFile, 0L, totalLength, this); |
duke@1 | 285 | directory.buildIndex(); |
duke@1 | 286 | } finally { |
duke@1 | 287 | if (zipRandomFile != null) { |
duke@1 | 288 | closeFile(); |
duke@1 | 289 | } |
duke@1 | 290 | } |
duke@1 | 291 | |
duke@1 | 292 | lastReferenceTimeStamp = System.currentTimeMillis(); |
duke@1 | 293 | } |
duke@1 | 294 | |
duke@1 | 295 | private void openFile() throws FileNotFoundException { |
duke@1 | 296 | if (zipRandomFile == null && zipFile != null) { |
duke@1 | 297 | zipRandomFile = new RandomAccessFile(zipFile, "r"); |
duke@1 | 298 | } |
duke@1 | 299 | } |
duke@1 | 300 | |
duke@1 | 301 | private void cleanupState() { |
duke@1 | 302 | // Make sure there is a valid but empty index if the file doesn't exist |
duke@1 | 303 | entries = ZipFileIndexEntry.EMPTY_ARRAY; |
duke@1 | 304 | directories = Collections.<String, DirectoryEntry>emptyMap(); |
duke@1 | 305 | zipFileLastModified = NOT_MODIFIED; |
duke@1 | 306 | allDirs = Collections.<String>emptySet(); |
duke@1 | 307 | } |
duke@1 | 308 | |
duke@1 | 309 | public void close() { |
duke@1 | 310 | lock.lock(); |
duke@1 | 311 | try { |
duke@1 | 312 | writeIndex(); |
duke@1 | 313 | closeFile(); |
duke@1 | 314 | } |
duke@1 | 315 | finally { |
duke@1 | 316 | lock.unlock(); |
duke@1 | 317 | } |
duke@1 | 318 | } |
duke@1 | 319 | |
duke@1 | 320 | private void closeFile() { |
duke@1 | 321 | if (zipRandomFile != null) { |
duke@1 | 322 | try { |
duke@1 | 323 | zipRandomFile.close(); |
duke@1 | 324 | } catch (IOException ex) { |
duke@1 | 325 | } |
duke@1 | 326 | zipRandomFile = null; |
duke@1 | 327 | } |
duke@1 | 328 | } |
duke@1 | 329 | |
duke@1 | 330 | /** |
duke@1 | 331 | * Returns the ZipFileIndexEntry for an absolute path, if there is one. |
duke@1 | 332 | */ |
duke@1 | 333 | public ZipFileIndexEntry getZipIndexEntry(String path) { |
duke@1 | 334 | if (File.separatorChar != '/') { |
duke@1 | 335 | path = path.replace('/', File.separatorChar); |
duke@1 | 336 | } |
duke@1 | 337 | lock.lock(); |
duke@1 | 338 | try { |
duke@1 | 339 | checkIndex(); |
duke@1 | 340 | String lookFor = ""; |
duke@1 | 341 | int lastSepIndex = path.lastIndexOf(File.separatorChar); |
duke@1 | 342 | boolean noSeparator = false; |
duke@1 | 343 | if (lastSepIndex == -1) { |
duke@1 | 344 | noSeparator = true; |
duke@1 | 345 | } |
duke@1 | 346 | |
duke@1 | 347 | DirectoryEntry de = directories.get(noSeparator ? "" : path.substring(0, lastSepIndex)); |
duke@1 | 348 | |
duke@1 | 349 | lookFor = path.substring(noSeparator ? 0 : lastSepIndex + 1); |
duke@1 | 350 | |
duke@1 | 351 | return de == null ? null : de.getEntry(lookFor); |
duke@1 | 352 | } |
duke@1 | 353 | catch (IOException e) { |
duke@1 | 354 | return null; |
duke@1 | 355 | } |
duke@1 | 356 | finally { |
duke@1 | 357 | lock.unlock(); |
duke@1 | 358 | } |
duke@1 | 359 | } |
duke@1 | 360 | |
duke@1 | 361 | /** |
duke@1 | 362 | * Returns a javac List of filenames within an absolute path in the ZipFileIndex. |
duke@1 | 363 | */ |
duke@1 | 364 | public com.sun.tools.javac.util.List<String> getFiles(String path) { |
duke@1 | 365 | if (File.separatorChar != '/') { |
duke@1 | 366 | path = path.replace('/', File.separatorChar); |
duke@1 | 367 | } |
duke@1 | 368 | |
duke@1 | 369 | lock.lock(); |
duke@1 | 370 | try { |
duke@1 | 371 | checkIndex(); |
duke@1 | 372 | |
duke@1 | 373 | DirectoryEntry de = directories.get(path); |
duke@1 | 374 | com.sun.tools.javac.util.List<String> ret = de == null ? null : de.getFiles(); |
duke@1 | 375 | |
duke@1 | 376 | if (ret == null) { |
duke@1 | 377 | return com.sun.tools.javac.util.List.<String>nil(); |
duke@1 | 378 | } |
duke@1 | 379 | return ret; |
duke@1 | 380 | } |
duke@1 | 381 | catch (IOException e) { |
duke@1 | 382 | return com.sun.tools.javac.util.List.<String>nil(); |
duke@1 | 383 | } |
duke@1 | 384 | finally { |
duke@1 | 385 | lock.unlock(); |
duke@1 | 386 | } |
duke@1 | 387 | } |
duke@1 | 388 | |
duke@1 | 389 | public List<String> getAllDirectories(String path) { |
duke@1 | 390 | |
duke@1 | 391 | if (File.separatorChar != '/') { |
duke@1 | 392 | path = path.replace('/', File.separatorChar); |
duke@1 | 393 | } |
duke@1 | 394 | |
duke@1 | 395 | lock.lock(); |
duke@1 | 396 | try { |
duke@1 | 397 | checkIndex(); |
duke@1 | 398 | path = path.intern(); |
duke@1 | 399 | |
duke@1 | 400 | DirectoryEntry de = directories.get(path); |
duke@1 | 401 | com.sun.tools.javac.util.List<String> ret = de == null ? null : de.getDirectories(); |
duke@1 | 402 | |
duke@1 | 403 | if (ret == null) { |
duke@1 | 404 | return com.sun.tools.javac.util.List.<String>nil(); |
duke@1 | 405 | } |
duke@1 | 406 | |
duke@1 | 407 | return ret; |
duke@1 | 408 | } |
duke@1 | 409 | catch (IOException e) { |
duke@1 | 410 | return com.sun.tools.javac.util.List.<String>nil(); |
duke@1 | 411 | } |
duke@1 | 412 | finally { |
duke@1 | 413 | lock.unlock(); |
duke@1 | 414 | } |
duke@1 | 415 | } |
duke@1 | 416 | |
duke@1 | 417 | public Set<String> getAllDirectories() { |
duke@1 | 418 | lock.lock(); |
duke@1 | 419 | try { |
duke@1 | 420 | checkIndex(); |
duke@1 | 421 | if (allDirs == Collections.EMPTY_SET) { |
duke@1 | 422 | Set<String> alldirs = new HashSet<String>(); |
duke@1 | 423 | Iterator<String> dirsIter = directories.keySet().iterator(); |
duke@1 | 424 | while (dirsIter.hasNext()) { |
duke@1 | 425 | alldirs.add(new String(dirsIter.next())); |
duke@1 | 426 | } |
duke@1 | 427 | |
duke@1 | 428 | allDirs = alldirs; |
duke@1 | 429 | } |
duke@1 | 430 | |
duke@1 | 431 | return allDirs; |
duke@1 | 432 | } |
duke@1 | 433 | catch (IOException e) { |
duke@1 | 434 | return Collections.<String>emptySet(); |
duke@1 | 435 | } |
duke@1 | 436 | finally { |
duke@1 | 437 | lock.unlock(); |
duke@1 | 438 | } |
duke@1 | 439 | } |
duke@1 | 440 | |
duke@1 | 441 | /** |
duke@1 | 442 | * Tests if a specific path exists in the zip. This method will return true |
duke@1 | 443 | * for file entries and directories. |
duke@1 | 444 | * |
duke@1 | 445 | * @param path A path within the zip. |
duke@1 | 446 | * @return True if the path is a file or dir, false otherwise. |
duke@1 | 447 | */ |
duke@1 | 448 | public boolean contains(String path) { |
duke@1 | 449 | lock.lock(); |
duke@1 | 450 | try { |
duke@1 | 451 | checkIndex(); |
duke@1 | 452 | return getZipIndexEntry(path) != null; |
duke@1 | 453 | } |
duke@1 | 454 | catch (IOException e) { |
duke@1 | 455 | return false; |
duke@1 | 456 | } |
duke@1 | 457 | finally { |
duke@1 | 458 | lock.unlock(); |
duke@1 | 459 | } |
duke@1 | 460 | } |
duke@1 | 461 | |
duke@1 | 462 | public boolean isDirectory(String path) throws IOException { |
duke@1 | 463 | lock.lock(); |
duke@1 | 464 | try { |
duke@1 | 465 | // The top level in a zip file is always a directory. |
duke@1 | 466 | if (path.length() == 0) { |
duke@1 | 467 | lastReferenceTimeStamp = System.currentTimeMillis(); |
duke@1 | 468 | return true; |
duke@1 | 469 | } |
duke@1 | 470 | |
duke@1 | 471 | if (File.separatorChar != '/') |
duke@1 | 472 | path = path.replace('/', File.separatorChar); |
duke@1 | 473 | checkIndex(); |
duke@1 | 474 | return directories.get(path) != null; |
duke@1 | 475 | } |
duke@1 | 476 | finally { |
duke@1 | 477 | lock.unlock(); |
duke@1 | 478 | } |
duke@1 | 479 | } |
duke@1 | 480 | |
duke@1 | 481 | public long getLastModified(String path) throws IOException { |
duke@1 | 482 | lock.lock(); |
duke@1 | 483 | try { |
duke@1 | 484 | ZipFileIndexEntry entry = getZipIndexEntry(path); |
duke@1 | 485 | if (entry == null) |
duke@1 | 486 | throw new FileNotFoundException(); |
duke@1 | 487 | return entry.getLastModified(); |
duke@1 | 488 | } |
duke@1 | 489 | finally { |
duke@1 | 490 | lock.unlock(); |
duke@1 | 491 | } |
duke@1 | 492 | } |
duke@1 | 493 | |
duke@1 | 494 | public int length(String path) throws IOException { |
duke@1 | 495 | lock.lock(); |
duke@1 | 496 | try { |
duke@1 | 497 | ZipFileIndexEntry entry = getZipIndexEntry(path); |
duke@1 | 498 | if (entry == null) |
duke@1 | 499 | throw new FileNotFoundException(); |
duke@1 | 500 | |
duke@1 | 501 | if (entry.isDir) { |
duke@1 | 502 | return 0; |
duke@1 | 503 | } |
duke@1 | 504 | |
duke@1 | 505 | byte[] header = getHeader(entry); |
duke@1 | 506 | // entry is not compressed? |
duke@1 | 507 | if (get2ByteLittleEndian(header, 8) == 0) { |
duke@1 | 508 | return entry.compressedSize; |
duke@1 | 509 | } else { |
duke@1 | 510 | return entry.size; |
duke@1 | 511 | } |
duke@1 | 512 | } |
duke@1 | 513 | finally { |
duke@1 | 514 | lock.unlock(); |
duke@1 | 515 | } |
duke@1 | 516 | } |
duke@1 | 517 | |
duke@1 | 518 | public byte[] read(String path) throws IOException { |
duke@1 | 519 | lock.lock(); |
duke@1 | 520 | try { |
duke@1 | 521 | ZipFileIndexEntry entry = getZipIndexEntry(path); |
duke@1 | 522 | if (entry == null) |
duke@1 | 523 | throw new FileNotFoundException(MessageFormat.format("Path not found in ZIP: {0}", path)); |
duke@1 | 524 | return read(entry); |
duke@1 | 525 | } |
duke@1 | 526 | finally { |
duke@1 | 527 | lock.unlock(); |
duke@1 | 528 | } |
duke@1 | 529 | } |
duke@1 | 530 | |
duke@1 | 531 | public byte[] read(ZipFileIndexEntry entry) throws IOException { |
duke@1 | 532 | lock.lock(); |
duke@1 | 533 | try { |
duke@1 | 534 | openFile(); |
duke@1 | 535 | byte[] result = readBytes(entry); |
duke@1 | 536 | closeFile(); |
duke@1 | 537 | return result; |
duke@1 | 538 | } |
duke@1 | 539 | finally { |
duke@1 | 540 | lock.unlock(); |
duke@1 | 541 | } |
duke@1 | 542 | } |
duke@1 | 543 | |
duke@1 | 544 | public int read(String path, byte[] buffer) throws IOException { |
duke@1 | 545 | lock.lock(); |
duke@1 | 546 | try { |
duke@1 | 547 | ZipFileIndexEntry entry = getZipIndexEntry(path); |
duke@1 | 548 | if (entry == null) |
duke@1 | 549 | throw new FileNotFoundException(); |
duke@1 | 550 | return read(entry, buffer); |
duke@1 | 551 | } |
duke@1 | 552 | finally { |
duke@1 | 553 | lock.unlock(); |
duke@1 | 554 | } |
duke@1 | 555 | } |
duke@1 | 556 | |
duke@1 | 557 | public int read(ZipFileIndexEntry entry, byte[] buffer) |
duke@1 | 558 | throws IOException { |
duke@1 | 559 | lock.lock(); |
duke@1 | 560 | try { |
duke@1 | 561 | int result = readBytes(entry, buffer); |
duke@1 | 562 | return result; |
duke@1 | 563 | } |
duke@1 | 564 | finally { |
duke@1 | 565 | lock.unlock(); |
duke@1 | 566 | } |
duke@1 | 567 | } |
duke@1 | 568 | |
duke@1 | 569 | private byte[] readBytes(ZipFileIndexEntry entry) throws IOException { |
duke@1 | 570 | byte[] header = getHeader(entry); |
duke@1 | 571 | int csize = entry.compressedSize; |
duke@1 | 572 | byte[] cbuf = new byte[csize]; |
duke@1 | 573 | zipRandomFile.skipBytes(get2ByteLittleEndian(header, 26) + get2ByteLittleEndian(header, 28)); |
duke@1 | 574 | zipRandomFile.readFully(cbuf, 0, csize); |
duke@1 | 575 | |
duke@1 | 576 | // is this compressed - offset 8 in the ZipEntry header |
duke@1 | 577 | if (get2ByteLittleEndian(header, 8) == 0) |
duke@1 | 578 | return cbuf; |
duke@1 | 579 | |
duke@1 | 580 | int size = entry.size; |
duke@1 | 581 | byte[] buf = new byte[size]; |
duke@1 | 582 | if (inflate(cbuf, buf) != size) |
duke@1 | 583 | throw new ZipException("corrupted zip file"); |
duke@1 | 584 | |
duke@1 | 585 | return buf; |
duke@1 | 586 | } |
duke@1 | 587 | |
duke@1 | 588 | /** |
duke@1 | 589 | * |
duke@1 | 590 | */ |
duke@1 | 591 | private int readBytes(ZipFileIndexEntry entry, byte[] buffer) throws IOException { |
duke@1 | 592 | byte[] header = getHeader(entry); |
duke@1 | 593 | |
duke@1 | 594 | // entry is not compressed? |
duke@1 | 595 | if (get2ByteLittleEndian(header, 8) == 0) { |
duke@1 | 596 | zipRandomFile.skipBytes(get2ByteLittleEndian(header, 26) + get2ByteLittleEndian(header, 28)); |
duke@1 | 597 | int offset = 0; |
duke@1 | 598 | int size = buffer.length; |
duke@1 | 599 | while (offset < size) { |
duke@1 | 600 | int count = zipRandomFile.read(buffer, offset, size - offset); |
duke@1 | 601 | if (count == -1) |
duke@1 | 602 | break; |
duke@1 | 603 | offset += count; |
duke@1 | 604 | } |
duke@1 | 605 | return entry.size; |
duke@1 | 606 | } |
duke@1 | 607 | |
duke@1 | 608 | int csize = entry.compressedSize; |
duke@1 | 609 | byte[] cbuf = new byte[csize]; |
duke@1 | 610 | zipRandomFile.skipBytes(get2ByteLittleEndian(header, 26) + get2ByteLittleEndian(header, 28)); |
duke@1 | 611 | zipRandomFile.readFully(cbuf, 0, csize); |
duke@1 | 612 | |
duke@1 | 613 | int count = inflate(cbuf, buffer); |
duke@1 | 614 | if (count == -1) |
duke@1 | 615 | throw new ZipException("corrupted zip file"); |
duke@1 | 616 | |
duke@1 | 617 | return entry.size; |
duke@1 | 618 | } |
duke@1 | 619 | |
duke@1 | 620 | //---------------------------------------------------------------------------- |
duke@1 | 621 | // Zip utilities |
duke@1 | 622 | //---------------------------------------------------------------------------- |
duke@1 | 623 | |
duke@1 | 624 | private byte[] getHeader(ZipFileIndexEntry entry) throws IOException { |
duke@1 | 625 | zipRandomFile.seek(entry.offset); |
duke@1 | 626 | byte[] header = new byte[30]; |
duke@1 | 627 | zipRandomFile.readFully(header); |
duke@1 | 628 | if (get4ByteLittleEndian(header, 0) != 0x04034b50) |
duke@1 | 629 | throw new ZipException("corrupted zip file"); |
duke@1 | 630 | if ((get2ByteLittleEndian(header, 6) & 1) != 0) |
duke@1 | 631 | throw new ZipException("encrypted zip file"); // offset 6 in the header of the ZipFileEntry |
duke@1 | 632 | return header; |
duke@1 | 633 | } |
duke@1 | 634 | |
duke@1 | 635 | /* |
duke@1 | 636 | * Inflate using the java.util.zip.Inflater class |
duke@1 | 637 | */ |
duke@1 | 638 | private static Inflater inflater; |
duke@1 | 639 | private int inflate(byte[] src, byte[] dest) { |
duke@1 | 640 | |
duke@1 | 641 | // construct the inflater object or reuse an existing one |
duke@1 | 642 | if (inflater == null) |
duke@1 | 643 | inflater = new Inflater(true); |
duke@1 | 644 | |
duke@1 | 645 | synchronized (inflater) { |
duke@1 | 646 | inflater.reset(); |
duke@1 | 647 | inflater.setInput(src); |
duke@1 | 648 | try { |
duke@1 | 649 | return inflater.inflate(dest); |
duke@1 | 650 | } catch (DataFormatException ex) { |
duke@1 | 651 | return -1; |
duke@1 | 652 | } |
duke@1 | 653 | } |
duke@1 | 654 | } |
duke@1 | 655 | |
duke@1 | 656 | /** |
duke@1 | 657 | * return the two bytes buf[pos], buf[pos+1] as an unsigned integer in little |
duke@1 | 658 | * endian format. |
duke@1 | 659 | */ |
duke@1 | 660 | private static int get2ByteLittleEndian(byte[] buf, int pos) { |
duke@1 | 661 | return (buf[pos] & 0xFF) + ((buf[pos+1] & 0xFF) << 8); |
duke@1 | 662 | } |
duke@1 | 663 | |
duke@1 | 664 | /** |
duke@1 | 665 | * return the 4 bytes buf[i..i+3] as an integer in little endian format. |
duke@1 | 666 | */ |
duke@1 | 667 | private static int get4ByteLittleEndian(byte[] buf, int pos) { |
duke@1 | 668 | return (buf[pos] & 0xFF) + ((buf[pos + 1] & 0xFF) << 8) + |
duke@1 | 669 | ((buf[pos + 2] & 0xFF) << 16) + ((buf[pos + 3] & 0xFF) << 24); |
duke@1 | 670 | } |
duke@1 | 671 | |
duke@1 | 672 | /* ---------------------------------------------------------------------------- |
duke@1 | 673 | * ZipDirectory |
duke@1 | 674 | * ----------------------------------------------------------------------------*/ |
duke@1 | 675 | |
duke@1 | 676 | private class ZipDirectory { |
duke@1 | 677 | private String lastDir; |
duke@1 | 678 | private int lastStart; |
duke@1 | 679 | private int lastLen; |
duke@1 | 680 | |
duke@1 | 681 | byte[] zipDir; |
duke@1 | 682 | RandomAccessFile zipRandomFile = null; |
duke@1 | 683 | ZipFileIndex zipFileIndex = null; |
duke@1 | 684 | |
duke@1 | 685 | public ZipDirectory(RandomAccessFile zipRandomFile, long start, long end, ZipFileIndex index) throws IOException { |
duke@1 | 686 | this.zipRandomFile = zipRandomFile; |
duke@1 | 687 | this.zipFileIndex = index; |
duke@1 | 688 | |
duke@1 | 689 | findCENRecord(start, end); |
duke@1 | 690 | } |
duke@1 | 691 | |
duke@1 | 692 | /* |
duke@1 | 693 | * Reads zip file central directory. |
duke@1 | 694 | * For more details see readCEN in zip_util.c from the JDK sources. |
duke@1 | 695 | * This is a Java port of that function. |
duke@1 | 696 | */ |
duke@1 | 697 | private void findCENRecord(long start, long end) throws IOException { |
duke@1 | 698 | long totalLength = end - start; |
duke@1 | 699 | int endbuflen = 1024; |
duke@1 | 700 | byte[] endbuf = new byte[endbuflen]; |
duke@1 | 701 | long endbufend = end - start; |
duke@1 | 702 | |
duke@1 | 703 | // There is a variable-length field after the dir offset record. We need to do consequential search. |
duke@1 | 704 | while (endbufend >= 22) { |
duke@1 | 705 | if (endbufend < endbuflen) |
duke@1 | 706 | endbuflen = (int)endbufend; |
duke@1 | 707 | long endbufpos = endbufend - endbuflen; |
duke@1 | 708 | zipRandomFile.seek(start + endbufpos); |
duke@1 | 709 | zipRandomFile.readFully(endbuf, 0, endbuflen); |
duke@1 | 710 | int i = endbuflen - 22; |
duke@1 | 711 | while (i >= 0 && |
duke@1 | 712 | !(endbuf[i] == 0x50 && |
duke@1 | 713 | endbuf[i + 1] == 0x4b && |
duke@1 | 714 | endbuf[i + 2] == 0x05 && |
duke@1 | 715 | endbuf[i + 3] == 0x06 && |
duke@1 | 716 | endbufpos + i + 22 + |
duke@1 | 717 | get2ByteLittleEndian(endbuf, i + 20) == totalLength)) { |
duke@1 | 718 | i--; |
duke@1 | 719 | } |
duke@1 | 720 | |
duke@1 | 721 | if (i >= 0) { |
duke@1 | 722 | zipDir = new byte[get4ByteLittleEndian(endbuf, i + 12) + 2]; |
duke@1 | 723 | zipDir[0] = endbuf[i + 10]; |
duke@1 | 724 | zipDir[1] = endbuf[i + 11]; |
duke@1 | 725 | zipRandomFile.seek(start + get4ByteLittleEndian(endbuf, i + 16)); |
duke@1 | 726 | zipRandomFile.readFully(zipDir, 2, zipDir.length - 2); |
duke@1 | 727 | return; |
duke@1 | 728 | } else { |
duke@1 | 729 | endbufend = endbufpos + 21; |
duke@1 | 730 | } |
duke@1 | 731 | } |
duke@1 | 732 | throw new ZipException("cannot read zip file"); |
duke@1 | 733 | } |
duke@1 | 734 | private void buildIndex() throws IOException { |
duke@1 | 735 | int entryCount = get2ByteLittleEndian(zipDir, 0); |
duke@1 | 736 | |
duke@1 | 737 | entries = new ZipFileIndexEntry[entryCount]; |
duke@1 | 738 | // Add each of the files |
duke@1 | 739 | if (entryCount > 0) { |
duke@1 | 740 | directories = new HashMap<String, DirectoryEntry>(); |
duke@1 | 741 | ArrayList<ZipFileIndexEntry> entryList = new ArrayList<ZipFileIndexEntry>(); |
duke@1 | 742 | int pos = 2; |
duke@1 | 743 | for (int i = 0; i < entryCount; i++) { |
duke@1 | 744 | pos = readEntry(pos, entryList, directories); |
duke@1 | 745 | } |
duke@1 | 746 | |
duke@1 | 747 | // Add the accumulated dirs into the same list |
duke@1 | 748 | Iterator i = directories.keySet().iterator(); |
duke@1 | 749 | while (i.hasNext()) { |
duke@1 | 750 | ZipFileIndexEntry zipFileIndexEntry = new ZipFileIndexEntry( (String) i.next()); |
duke@1 | 751 | zipFileIndexEntry.isDir = true; |
duke@1 | 752 | entryList.add(zipFileIndexEntry); |
duke@1 | 753 | } |
duke@1 | 754 | |
duke@1 | 755 | entries = entryList.toArray(new ZipFileIndexEntry[entryList.size()]); |
duke@1 | 756 | Arrays.sort(entries); |
duke@1 | 757 | } else { |
duke@1 | 758 | cleanupState(); |
duke@1 | 759 | } |
duke@1 | 760 | } |
duke@1 | 761 | |
duke@1 | 762 | private int readEntry(int pos, List<ZipFileIndexEntry> entryList, |
duke@1 | 763 | Map<String, DirectoryEntry> directories) throws IOException { |
duke@1 | 764 | if (get4ByteLittleEndian(zipDir, pos) != 0x02014b50) { |
duke@1 | 765 | throw new ZipException("cannot read zip file entry"); |
duke@1 | 766 | } |
duke@1 | 767 | |
duke@1 | 768 | int dirStart = pos + 46; |
duke@1 | 769 | int fileStart = dirStart; |
duke@1 | 770 | int fileEnd = fileStart + get2ByteLittleEndian(zipDir, pos + 28); |
duke@1 | 771 | |
duke@1 | 772 | if (zipFileIndex.symbolFilePrefixLength != 0 && |
duke@1 | 773 | ((fileEnd - fileStart) >= symbolFilePrefixLength)) { |
duke@1 | 774 | dirStart += zipFileIndex.symbolFilePrefixLength; |
duke@1 | 775 | fileStart += zipFileIndex.symbolFilePrefixLength; |
duke@1 | 776 | } |
duke@1 | 777 | |
duke@1 | 778 | // Use the OS's path separator. Keep the position of the last one. |
duke@1 | 779 | for (int index = fileStart; index < fileEnd; index++) { |
duke@1 | 780 | byte nextByte = zipDir[index]; |
duke@1 | 781 | if (nextByte == (byte)'\\' || nextByte == (byte)'/') { |
duke@1 | 782 | zipDir[index] = (byte)File.separatorChar; |
duke@1 | 783 | fileStart = index + 1; |
duke@1 | 784 | } |
duke@1 | 785 | } |
duke@1 | 786 | |
duke@1 | 787 | String directory = null; |
duke@1 | 788 | if (fileStart == dirStart) |
duke@1 | 789 | directory = ""; |
duke@1 | 790 | else if (lastDir != null && lastLen == fileStart - dirStart - 1) { |
duke@1 | 791 | int index = lastLen - 1; |
duke@1 | 792 | while (zipDir[lastStart + index] == zipDir[dirStart + index]) { |
duke@1 | 793 | if (index == 0) { |
duke@1 | 794 | directory = lastDir; |
duke@1 | 795 | break; |
duke@1 | 796 | } |
duke@1 | 797 | index--; |
duke@1 | 798 | } |
duke@1 | 799 | } |
duke@1 | 800 | |
duke@1 | 801 | // Sub directories |
duke@1 | 802 | if (directory == null) { |
duke@1 | 803 | lastStart = dirStart; |
duke@1 | 804 | lastLen = fileStart - dirStart - 1; |
duke@1 | 805 | |
duke@1 | 806 | directory = new String(zipDir, dirStart, lastLen, "UTF-8").intern(); |
duke@1 | 807 | lastDir = directory; |
duke@1 | 808 | |
duke@1 | 809 | // Enter also all the parent directories |
duke@1 | 810 | String tempDirectory = directory; |
duke@1 | 811 | |
duke@1 | 812 | while (directories.get(tempDirectory) == null) { |
duke@1 | 813 | directories.put(tempDirectory, new DirectoryEntry(tempDirectory, zipFileIndex)); |
duke@1 | 814 | int separator = tempDirectory.lastIndexOf(File.separatorChar); |
duke@1 | 815 | if (separator == -1) |
duke@1 | 816 | break; |
duke@1 | 817 | tempDirectory = tempDirectory.substring(0, separator); |
duke@1 | 818 | } |
duke@1 | 819 | } |
duke@1 | 820 | else { |
duke@1 | 821 | directory = directory.intern(); |
duke@1 | 822 | if (directories.get(directory) == null) { |
duke@1 | 823 | directories.put(directory, new DirectoryEntry(directory, zipFileIndex)); |
duke@1 | 824 | } |
duke@1 | 825 | } |
duke@1 | 826 | |
duke@1 | 827 | // For each dir create also a file |
duke@1 | 828 | if (fileStart != fileEnd) { |
duke@1 | 829 | ZipFileIndexEntry entry = new ZipFileIndexEntry(directory, |
duke@1 | 830 | new String(zipDir, fileStart, fileEnd - fileStart, "UTF-8")); |
duke@1 | 831 | |
duke@1 | 832 | entry.setNativeTime(get4ByteLittleEndian(zipDir, pos + 12)); |
duke@1 | 833 | entry.compressedSize = get4ByteLittleEndian(zipDir, pos + 20); |
duke@1 | 834 | entry.size = get4ByteLittleEndian(zipDir, pos + 24); |
duke@1 | 835 | entry.offset = get4ByteLittleEndian(zipDir, pos + 42); |
duke@1 | 836 | entryList.add(entry); |
duke@1 | 837 | } |
duke@1 | 838 | |
duke@1 | 839 | return pos + 46 + |
duke@1 | 840 | get2ByteLittleEndian(zipDir, pos + 28) + |
duke@1 | 841 | get2ByteLittleEndian(zipDir, pos + 30) + |
duke@1 | 842 | get2ByteLittleEndian(zipDir, pos + 32); |
duke@1 | 843 | } |
duke@1 | 844 | } |
duke@1 | 845 | |
duke@1 | 846 | /** |
duke@1 | 847 | * Returns the last modified timestamp of a zip file. |
duke@1 | 848 | * @return long |
duke@1 | 849 | */ |
duke@1 | 850 | public long getZipFileLastModified() throws IOException { |
duke@1 | 851 | lock.lock(); |
duke@1 | 852 | try { |
duke@1 | 853 | checkIndex(); |
duke@1 | 854 | return zipFileLastModified; |
duke@1 | 855 | } |
duke@1 | 856 | finally { |
duke@1 | 857 | lock.unlock(); |
duke@1 | 858 | } |
duke@1 | 859 | } |
duke@1 | 860 | |
duke@1 | 861 | /** ------------------------------------------------------------------------ |
duke@1 | 862 | * DirectoryEntry class |
duke@1 | 863 | * -------------------------------------------------------------------------*/ |
duke@1 | 864 | static class DirectoryEntry { |
duke@1 | 865 | private boolean filesInited; |
duke@1 | 866 | private boolean directoriesInited; |
duke@1 | 867 | private boolean zipFileEntriesInited; |
duke@1 | 868 | private boolean entriesInited; |
duke@1 | 869 | |
duke@1 | 870 | private long writtenOffsetOffset = 0; |
duke@1 | 871 | |
duke@1 | 872 | private String dirName; |
duke@1 | 873 | |
duke@1 | 874 | private com.sun.tools.javac.util.List<String> zipFileEntriesFiles = com.sun.tools.javac.util.List.<String>nil(); |
duke@1 | 875 | private com.sun.tools.javac.util.List<String> zipFileEntriesDirectories = com.sun.tools.javac.util.List.<String>nil(); |
duke@1 | 876 | private com.sun.tools.javac.util.List<ZipFileIndexEntry> zipFileEntries = com.sun.tools.javac.util.List.<ZipFileIndexEntry>nil(); |
duke@1 | 877 | |
duke@1 | 878 | private List<ZipFileIndexEntry> entries = new ArrayList<ZipFileIndexEntry>(); |
duke@1 | 879 | |
duke@1 | 880 | private ZipFileIndex zipFileIndex; |
duke@1 | 881 | |
duke@1 | 882 | private int numEntries; |
duke@1 | 883 | |
duke@1 | 884 | DirectoryEntry(String dirName, ZipFileIndex index) { |
duke@1 | 885 | filesInited = false; |
duke@1 | 886 | directoriesInited = false; |
duke@1 | 887 | entriesInited = false; |
duke@1 | 888 | |
duke@1 | 889 | if (File.separatorChar == '/') { |
duke@1 | 890 | dirName.replace('\\', '/'); |
duke@1 | 891 | } |
duke@1 | 892 | else { |
duke@1 | 893 | dirName.replace('/', '\\'); |
duke@1 | 894 | } |
duke@1 | 895 | |
duke@1 | 896 | this.dirName = dirName.intern(); |
duke@1 | 897 | this.zipFileIndex = index; |
duke@1 | 898 | } |
duke@1 | 899 | |
duke@1 | 900 | private com.sun.tools.javac.util.List<String> getFiles() { |
duke@1 | 901 | if (filesInited) { |
duke@1 | 902 | return zipFileEntriesFiles; |
duke@1 | 903 | } |
duke@1 | 904 | |
duke@1 | 905 | initEntries(); |
duke@1 | 906 | |
duke@1 | 907 | for (ZipFileIndexEntry e : entries) { |
duke@1 | 908 | if (!e.isDir) { |
duke@1 | 909 | zipFileEntriesFiles = zipFileEntriesFiles.append(e.name); |
duke@1 | 910 | } |
duke@1 | 911 | } |
duke@1 | 912 | filesInited = true; |
duke@1 | 913 | return zipFileEntriesFiles; |
duke@1 | 914 | } |
duke@1 | 915 | |
duke@1 | 916 | private com.sun.tools.javac.util.List<String> getDirectories() { |
duke@1 | 917 | if (directoriesInited) { |
duke@1 | 918 | return zipFileEntriesFiles; |
duke@1 | 919 | } |
duke@1 | 920 | |
duke@1 | 921 | initEntries(); |
duke@1 | 922 | |
duke@1 | 923 | for (ZipFileIndexEntry e : entries) { |
duke@1 | 924 | if (e.isDir) { |
duke@1 | 925 | zipFileEntriesDirectories = zipFileEntriesDirectories.append(e.name); |
duke@1 | 926 | } |
duke@1 | 927 | } |
duke@1 | 928 | |
duke@1 | 929 | directoriesInited = true; |
duke@1 | 930 | |
duke@1 | 931 | return zipFileEntriesDirectories; |
duke@1 | 932 | } |
duke@1 | 933 | |
duke@1 | 934 | private com.sun.tools.javac.util.List<ZipFileIndexEntry> getEntries() { |
duke@1 | 935 | if (zipFileEntriesInited) { |
duke@1 | 936 | return zipFileEntries; |
duke@1 | 937 | } |
duke@1 | 938 | |
duke@1 | 939 | initEntries(); |
duke@1 | 940 | |
duke@1 | 941 | zipFileEntries = com.sun.tools.javac.util.List.nil(); |
duke@1 | 942 | for (ZipFileIndexEntry zfie : entries) { |
duke@1 | 943 | zipFileEntries = zipFileEntries.append(zfie); |
duke@1 | 944 | } |
duke@1 | 945 | |
duke@1 | 946 | zipFileEntriesInited = true; |
duke@1 | 947 | |
duke@1 | 948 | return zipFileEntries; |
duke@1 | 949 | } |
duke@1 | 950 | |
duke@1 | 951 | private ZipFileIndexEntry getEntry(String rootName) { |
duke@1 | 952 | initEntries(); |
duke@1 | 953 | int index = Collections.binarySearch(entries, new ZipFileIndexEntry(dirName, rootName)); |
duke@1 | 954 | if (index < 0) { |
duke@1 | 955 | return null; |
duke@1 | 956 | } |
duke@1 | 957 | |
duke@1 | 958 | return entries.get(index); |
duke@1 | 959 | } |
duke@1 | 960 | |
duke@1 | 961 | private void initEntries() { |
duke@1 | 962 | if (entriesInited) { |
duke@1 | 963 | return; |
duke@1 | 964 | } |
duke@1 | 965 | |
duke@1 | 966 | if (!zipFileIndex.readFromIndex) { |
duke@1 | 967 | int from = -Arrays.binarySearch(zipFileIndex.entries, |
duke@1 | 968 | new ZipFileIndexEntry(dirName, ZipFileIndex.MIN_CHAR)) - 1; |
duke@1 | 969 | int to = -Arrays.binarySearch(zipFileIndex.entries, |
duke@1 | 970 | new ZipFileIndexEntry(dirName, MAX_CHAR)) - 1; |
duke@1 | 971 | |
duke@1 | 972 | boolean emptyList = false; |
duke@1 | 973 | |
duke@1 | 974 | for (int i = from; i < to; i++) { |
duke@1 | 975 | entries.add(zipFileIndex.entries[i]); |
duke@1 | 976 | } |
duke@1 | 977 | } else { |
duke@1 | 978 | File indexFile = zipFileIndex.getIndexFile(); |
duke@1 | 979 | if (indexFile != null) { |
duke@1 | 980 | RandomAccessFile raf = null; |
duke@1 | 981 | try { |
duke@1 | 982 | raf = new RandomAccessFile(indexFile, "r"); |
duke@1 | 983 | raf.seek(writtenOffsetOffset); |
duke@1 | 984 | |
duke@1 | 985 | for (int nFiles = 0; nFiles < numEntries; nFiles++) { |
duke@1 | 986 | // Read the name bytes |
duke@1 | 987 | int zfieNameBytesLen = raf.readInt(); |
duke@1 | 988 | byte [] zfieNameBytes = new byte[zfieNameBytesLen]; |
duke@1 | 989 | raf.read(zfieNameBytes); |
duke@1 | 990 | String eName = new String(zfieNameBytes, "UTF-8"); |
duke@1 | 991 | |
duke@1 | 992 | // Read isDir |
duke@1 | 993 | boolean eIsDir = raf.readByte() == (byte)0 ? false : true; |
duke@1 | 994 | |
duke@1 | 995 | // Read offset of bytes in the real Jar/Zip file |
duke@1 | 996 | int eOffset = raf.readInt(); |
duke@1 | 997 | |
duke@1 | 998 | // Read size of the file in the real Jar/Zip file |
duke@1 | 999 | int eSize = raf.readInt(); |
duke@1 | 1000 | |
duke@1 | 1001 | // Read compressed size of the file in the real Jar/Zip file |
duke@1 | 1002 | int eCsize = raf.readInt(); |
duke@1 | 1003 | |
duke@1 | 1004 | // Read java time stamp of the file in the real Jar/Zip file |
duke@1 | 1005 | long eJavaTimestamp = raf.readLong(); |
duke@1 | 1006 | |
duke@1 | 1007 | ZipFileIndexEntry rfie = new ZipFileIndexEntry(dirName, eName); |
duke@1 | 1008 | rfie.isDir = eIsDir; |
duke@1 | 1009 | rfie.offset = eOffset; |
duke@1 | 1010 | rfie.size = eSize; |
duke@1 | 1011 | rfie.compressedSize = eCsize; |
duke@1 | 1012 | rfie.javatime = eJavaTimestamp; |
duke@1 | 1013 | entries.add(rfie); |
duke@1 | 1014 | } |
duke@1 | 1015 | } catch (Throwable t) { |
duke@1 | 1016 | // Do nothing |
duke@1 | 1017 | } finally { |
duke@1 | 1018 | try { |
duke@1 | 1019 | if (raf == null) { |
duke@1 | 1020 | raf.close(); |
duke@1 | 1021 | } |
duke@1 | 1022 | } catch (Throwable t) { |
duke@1 | 1023 | // Do nothing |
duke@1 | 1024 | } |
duke@1 | 1025 | } |
duke@1 | 1026 | } |
duke@1 | 1027 | } |
duke@1 | 1028 | |
duke@1 | 1029 | entriesInited = true; |
duke@1 | 1030 | } |
duke@1 | 1031 | |
duke@1 | 1032 | List<ZipFileIndexEntry> getEntriesAsCollection() { |
duke@1 | 1033 | initEntries(); |
duke@1 | 1034 | |
duke@1 | 1035 | return entries; |
duke@1 | 1036 | } |
duke@1 | 1037 | } |
duke@1 | 1038 | |
duke@1 | 1039 | private boolean readIndex() { |
duke@1 | 1040 | if (triedToReadIndex || !usePreindexedCache) { |
duke@1 | 1041 | return false; |
duke@1 | 1042 | } |
duke@1 | 1043 | |
duke@1 | 1044 | boolean ret = false; |
duke@1 | 1045 | lock.lock(); |
duke@1 | 1046 | try { |
duke@1 | 1047 | triedToReadIndex = true; |
duke@1 | 1048 | RandomAccessFile raf = null; |
duke@1 | 1049 | try { |
duke@1 | 1050 | File indexFileName = getIndexFile(); |
duke@1 | 1051 | raf = new RandomAccessFile(indexFileName, "r"); |
duke@1 | 1052 | |
duke@1 | 1053 | long fileStamp = raf.readLong(); |
duke@1 | 1054 | if (zipFile.lastModified() != fileStamp) { |
duke@1 | 1055 | ret = false; |
duke@1 | 1056 | } else { |
duke@1 | 1057 | directories = new HashMap<String, DirectoryEntry>(); |
duke@1 | 1058 | int numDirs = raf.readInt(); |
duke@1 | 1059 | for (int nDirs = 0; nDirs < numDirs; nDirs++) { |
duke@1 | 1060 | int dirNameBytesLen = raf.readInt(); |
duke@1 | 1061 | byte [] dirNameBytes = new byte[dirNameBytesLen]; |
duke@1 | 1062 | raf.read(dirNameBytes); |
duke@1 | 1063 | |
duke@1 | 1064 | String dirNameStr = new String(dirNameBytes, "UTF-8"); |
duke@1 | 1065 | DirectoryEntry de = new DirectoryEntry(dirNameStr, this); |
duke@1 | 1066 | de.numEntries = raf.readInt(); |
duke@1 | 1067 | de.writtenOffsetOffset = raf.readLong(); |
duke@1 | 1068 | directories.put(dirNameStr, de); |
duke@1 | 1069 | } |
duke@1 | 1070 | ret = true; |
duke@1 | 1071 | zipFileLastModified = fileStamp; |
duke@1 | 1072 | } |
duke@1 | 1073 | } catch (Throwable t) { |
duke@1 | 1074 | // Do nothing |
duke@1 | 1075 | } finally { |
duke@1 | 1076 | if (raf != null) { |
duke@1 | 1077 | try { |
duke@1 | 1078 | raf.close(); |
duke@1 | 1079 | } catch (Throwable tt) { |
duke@1 | 1080 | // Do nothing |
duke@1 | 1081 | } |
duke@1 | 1082 | } |
duke@1 | 1083 | } |
duke@1 | 1084 | if (ret == true) { |
duke@1 | 1085 | readFromIndex = true; |
duke@1 | 1086 | } |
duke@1 | 1087 | } |
duke@1 | 1088 | finally { |
duke@1 | 1089 | lock.unlock(); |
duke@1 | 1090 | } |
duke@1 | 1091 | |
duke@1 | 1092 | return ret; |
duke@1 | 1093 | } |
duke@1 | 1094 | |
duke@1 | 1095 | private boolean writeIndex() { |
duke@1 | 1096 | boolean ret = false; |
duke@1 | 1097 | if (readFromIndex || !usePreindexedCache) { |
duke@1 | 1098 | return true; |
duke@1 | 1099 | } |
duke@1 | 1100 | |
duke@1 | 1101 | if (!writeIndex) { |
duke@1 | 1102 | return true; |
duke@1 | 1103 | } |
duke@1 | 1104 | |
duke@1 | 1105 | File indexFile = getIndexFile(); |
duke@1 | 1106 | if (indexFile == null) { |
duke@1 | 1107 | return false; |
duke@1 | 1108 | } |
duke@1 | 1109 | |
duke@1 | 1110 | RandomAccessFile raf = null; |
duke@1 | 1111 | long writtenSoFar = 0; |
duke@1 | 1112 | try { |
duke@1 | 1113 | raf = new RandomAccessFile(indexFile, "rw"); |
duke@1 | 1114 | |
duke@1 | 1115 | raf.writeLong(zipFileLastModified); |
duke@1 | 1116 | writtenSoFar += 8; |
duke@1 | 1117 | |
duke@1 | 1118 | |
duke@1 | 1119 | Iterator<String> iterDirName = directories.keySet().iterator(); |
duke@1 | 1120 | List<DirectoryEntry> directoriesToWrite = new ArrayList<DirectoryEntry>(); |
duke@1 | 1121 | Map<String, Long> offsets = new HashMap<String, Long>(); |
duke@1 | 1122 | raf.writeInt(directories.keySet().size()); |
duke@1 | 1123 | writtenSoFar += 4; |
duke@1 | 1124 | |
duke@1 | 1125 | while(iterDirName.hasNext()) { |
duke@1 | 1126 | String dirName = iterDirName.next(); |
duke@1 | 1127 | DirectoryEntry dirEntry = directories.get(dirName); |
duke@1 | 1128 | |
duke@1 | 1129 | directoriesToWrite.add(dirEntry); |
duke@1 | 1130 | |
duke@1 | 1131 | // Write the dir name bytes |
duke@1 | 1132 | byte [] dirNameBytes = dirName.getBytes("UTF-8"); |
duke@1 | 1133 | int dirNameBytesLen = dirNameBytes.length; |
duke@1 | 1134 | raf.writeInt(dirNameBytesLen); |
duke@1 | 1135 | writtenSoFar += 4; |
duke@1 | 1136 | |
duke@1 | 1137 | raf.write(dirNameBytes); |
duke@1 | 1138 | writtenSoFar += dirNameBytesLen; |
duke@1 | 1139 | |
duke@1 | 1140 | // Write the number of files in the dir |
duke@1 | 1141 | List dirEntries = dirEntry.getEntriesAsCollection(); |
duke@1 | 1142 | raf.writeInt(dirEntries.size()); |
duke@1 | 1143 | writtenSoFar += 4; |
duke@1 | 1144 | |
duke@1 | 1145 | offsets.put(dirName, new Long(writtenSoFar)); |
duke@1 | 1146 | |
duke@1 | 1147 | // Write the offset of the file's data in the dir |
duke@1 | 1148 | dirEntry.writtenOffsetOffset = 0L; |
duke@1 | 1149 | raf.writeLong(0L); |
duke@1 | 1150 | writtenSoFar += 8; |
duke@1 | 1151 | } |
duke@1 | 1152 | |
duke@1 | 1153 | for (DirectoryEntry de : directoriesToWrite) { |
duke@1 | 1154 | // Fix up the offset in the directory table |
duke@1 | 1155 | long currFP = raf.getFilePointer(); |
duke@1 | 1156 | |
duke@1 | 1157 | long offsetOffset = offsets.get(de.dirName).longValue(); |
duke@1 | 1158 | raf.seek(offsetOffset); |
duke@1 | 1159 | raf.writeLong(writtenSoFar); |
duke@1 | 1160 | |
duke@1 | 1161 | raf.seek(currFP); |
duke@1 | 1162 | |
duke@1 | 1163 | // Now write each of the files in the DirectoryEntry |
duke@1 | 1164 | List<ZipFileIndexEntry> entries = de.getEntriesAsCollection(); |
duke@1 | 1165 | for (ZipFileIndexEntry zfie : entries) { |
duke@1 | 1166 | // Write the name bytes |
duke@1 | 1167 | byte [] zfieNameBytes = zfie.name.getBytes("UTF-8"); |
duke@1 | 1168 | int zfieNameBytesLen = zfieNameBytes.length; |
duke@1 | 1169 | raf.writeInt(zfieNameBytesLen); |
duke@1 | 1170 | writtenSoFar += 4; |
duke@1 | 1171 | raf.write(zfieNameBytes); |
duke@1 | 1172 | writtenSoFar += zfieNameBytesLen; |
duke@1 | 1173 | |
duke@1 | 1174 | // Write isDir |
duke@1 | 1175 | raf.writeByte(zfie.isDir ? (byte)1 : (byte)0); |
duke@1 | 1176 | writtenSoFar += 1; |
duke@1 | 1177 | |
duke@1 | 1178 | // Write offset of bytes in the real Jar/Zip file |
duke@1 | 1179 | raf.writeInt(zfie.offset); |
duke@1 | 1180 | writtenSoFar += 4; |
duke@1 | 1181 | |
duke@1 | 1182 | // Write size of the file in the real Jar/Zip file |
duke@1 | 1183 | raf.writeInt(zfie.size); |
duke@1 | 1184 | writtenSoFar += 4; |
duke@1 | 1185 | |
duke@1 | 1186 | // Write compressed size of the file in the real Jar/Zip file |
duke@1 | 1187 | raf.writeInt(zfie.compressedSize); |
duke@1 | 1188 | writtenSoFar += 4; |
duke@1 | 1189 | |
duke@1 | 1190 | // Write java time stamp of the file in the real Jar/Zip file |
duke@1 | 1191 | raf.writeLong(zfie.getLastModified()); |
duke@1 | 1192 | writtenSoFar += 8; |
duke@1 | 1193 | } |
duke@1 | 1194 | } |
duke@1 | 1195 | } catch (Throwable t) { |
duke@1 | 1196 | // Do nothing |
duke@1 | 1197 | } finally { |
duke@1 | 1198 | try { |
duke@1 | 1199 | if (raf != null) { |
duke@1 | 1200 | raf.close(); |
duke@1 | 1201 | } |
duke@1 | 1202 | } catch(IOException ioe) { |
duke@1 | 1203 | // Do nothing |
duke@1 | 1204 | } |
duke@1 | 1205 | } |
duke@1 | 1206 | |
duke@1 | 1207 | return ret; |
duke@1 | 1208 | } |
duke@1 | 1209 | |
duke@1 | 1210 | public boolean writeZipIndex() { |
duke@1 | 1211 | lock.lock(); |
duke@1 | 1212 | try { |
duke@1 | 1213 | return writeIndex(); |
duke@1 | 1214 | } |
duke@1 | 1215 | finally { |
duke@1 | 1216 | lock.unlock(); |
duke@1 | 1217 | } |
duke@1 | 1218 | } |
duke@1 | 1219 | |
duke@1 | 1220 | private File getIndexFile() { |
duke@1 | 1221 | if (zipIndexFile == null) { |
duke@1 | 1222 | if (zipFile == null) { |
duke@1 | 1223 | return null; |
duke@1 | 1224 | } |
duke@1 | 1225 | |
duke@1 | 1226 | zipIndexFile = new File((preindexedCacheLocation == null ? "" : preindexedCacheLocation) + |
duke@1 | 1227 | zipFile.getName() + ".index"); |
duke@1 | 1228 | } |
duke@1 | 1229 | |
duke@1 | 1230 | return zipIndexFile; |
duke@1 | 1231 | } |
duke@1 | 1232 | |
duke@1 | 1233 | public File getZipFile() { |
duke@1 | 1234 | return zipFile; |
duke@1 | 1235 | } |
duke@1 | 1236 | } |