Mon, 07 Dec 2009 14:35:07 -0800
6907660: stupid typo in ZipFileIndex guarantees NPE
Reviewed-by: darcy
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 | |
jjg@50 | 26 | package com.sun.tools.javac.file; |
duke@1 | 27 | |
jjg@103 | 28 | |
jjg@50 | 29 | import java.io.File; |
jjg@50 | 30 | import java.io.FileNotFoundException; |
jjg@50 | 31 | import java.io.IOException; |
jjg@50 | 32 | import java.io.RandomAccessFile; |
jjg@424 | 33 | import java.lang.ref.Reference; |
jjg@103 | 34 | import java.lang.ref.SoftReference; |
jjg@50 | 35 | import java.util.ArrayList; |
jjg@50 | 36 | import java.util.Arrays; |
jjg@71 | 37 | import java.util.Calendar; |
jjg@50 | 38 | import java.util.Collections; |
jjg@50 | 39 | import java.util.HashMap; |
jjg@50 | 40 | import java.util.HashSet; |
jjg@50 | 41 | import java.util.Iterator; |
duke@1 | 42 | import java.util.List; |
jjg@50 | 43 | import java.util.Map; |
jjg@50 | 44 | import java.util.Set; |
duke@1 | 45 | import java.util.concurrent.locks.ReentrantLock; |
jjg@50 | 46 | import java.util.zip.DataFormatException; |
jjg@50 | 47 | import java.util.zip.Inflater; |
jjg@50 | 48 | import java.util.zip.ZipException; |
duke@1 | 49 | |
jjg@103 | 50 | import com.sun.tools.javac.file.RelativePath.RelativeDirectory; |
jjg@103 | 51 | import com.sun.tools.javac.file.RelativePath.RelativeFile; |
jjg@103 | 52 | |
duke@1 | 53 | /** This class implements building of index of a zip archive and access to it's context. |
duke@1 | 54 | * It also uses prebuild index if available. It supports invocations where it will |
duke@1 | 55 | * serialize an optimized zip index file to disk. |
duke@1 | 56 | * |
duke@1 | 57 | * In oreder to use secondary index file make sure the option "usezipindex" is in the Options object, |
duke@1 | 58 | * when JavacFileManager is invoked. (You can pass "-XDusezipindex" on the command line. |
duke@1 | 59 | * |
duke@1 | 60 | * Location where to look for/generate optimized zip index files can be provided using |
duke@1 | 61 | * "-XDcachezipindexdir=<directory>". If this flag is not provided, the dfault location is |
duke@1 | 62 | * the value of the "java.io.tmpdir" system property. |
duke@1 | 63 | * |
duke@1 | 64 | * If key "-XDwritezipindexfiles" is specified, there will be new optimized index file |
duke@1 | 65 | * created for each archive, used by the compiler for compilation, at location, |
duke@1 | 66 | * specified by "cachezipindexdir" option. |
duke@1 | 67 | * |
duke@1 | 68 | * If nonBatchMode option is specified (-XDnonBatchMode) the compiler will use timestamp |
duke@1 | 69 | * checking to reindex the zip files if it is needed. In batch mode the timestamps are not checked |
duke@1 | 70 | * and the compiler uses the cached indexes. |
jjg@333 | 71 | * |
jjg@333 | 72 | * <p><b>This is NOT part of any API supported by Sun Microsystems. |
jjg@333 | 73 | * If you write code that depends on this, you do so at your own risk. |
jjg@333 | 74 | * This code and its internal interfaces are subject to change or |
jjg@333 | 75 | * deletion without notice.</b> |
duke@1 | 76 | */ |
duke@1 | 77 | public class ZipFileIndex { |
duke@1 | 78 | private static final String MIN_CHAR = String.valueOf(Character.MIN_VALUE); |
duke@1 | 79 | private static final String MAX_CHAR = String.valueOf(Character.MAX_VALUE); |
duke@1 | 80 | |
duke@1 | 81 | public final static long NOT_MODIFIED = Long.MIN_VALUE; |
duke@1 | 82 | |
duke@1 | 83 | private static Map<File, ZipFileIndex> zipFileIndexCache = new HashMap<File, ZipFileIndex>(); |
duke@1 | 84 | private static ReentrantLock lock = new ReentrantLock(); |
duke@1 | 85 | |
duke@1 | 86 | private static boolean NON_BATCH_MODE = System.getProperty("nonBatchMode") != null;// TODO: Use -XD compiler switch for this. |
duke@1 | 87 | |
jjg@103 | 88 | private Map<RelativeDirectory, DirectoryEntry> directories = Collections.<RelativeDirectory, DirectoryEntry>emptyMap(); |
jjg@103 | 89 | private Set<RelativeDirectory> allDirs = Collections.<RelativeDirectory>emptySet(); |
duke@1 | 90 | |
duke@1 | 91 | // ZipFileIndex data entries |
duke@1 | 92 | private File zipFile; |
jjg@424 | 93 | private Reference<File> absFileRef; |
duke@1 | 94 | private long zipFileLastModified = NOT_MODIFIED; |
duke@1 | 95 | private RandomAccessFile zipRandomFile; |
jjg@57 | 96 | private Entry[] entries; |
duke@1 | 97 | |
duke@1 | 98 | private boolean readFromIndex = false; |
duke@1 | 99 | private File zipIndexFile = null; |
duke@1 | 100 | private boolean triedToReadIndex = false; |
jjg@103 | 101 | final RelativeDirectory symbolFilePrefix; |
duke@1 | 102 | private int symbolFilePrefixLength = 0; |
duke@1 | 103 | private boolean hasPopulatedData = false; |
duke@1 | 104 | private long lastReferenceTimeStamp = NOT_MODIFIED; |
duke@1 | 105 | |
duke@1 | 106 | private boolean usePreindexedCache = false; |
duke@1 | 107 | private String preindexedCacheLocation = null; |
duke@1 | 108 | |
duke@1 | 109 | private boolean writeIndex = false; |
duke@1 | 110 | |
jjg@103 | 111 | private Map <String, SoftReference<RelativeDirectory>> relativeDirectoryCache = |
jjg@103 | 112 | new HashMap<String, SoftReference<RelativeDirectory>>(); |
jjg@103 | 113 | |
duke@1 | 114 | /** |
duke@1 | 115 | * Returns a list of all ZipFileIndex entries |
duke@1 | 116 | * |
duke@1 | 117 | * @return A list of ZipFileIndex entries, or an empty list |
duke@1 | 118 | */ |
duke@1 | 119 | public static List<ZipFileIndex> getZipFileIndexes() { |
duke@1 | 120 | return getZipFileIndexes(false); |
duke@1 | 121 | } |
duke@1 | 122 | |
duke@1 | 123 | /** |
duke@1 | 124 | * Returns a list of all ZipFileIndex entries |
duke@1 | 125 | * |
duke@1 | 126 | * @param openedOnly If true it returns a list of only opened ZipFileIndex entries, otherwise |
duke@1 | 127 | * all ZipFileEntry(s) are included into the list. |
duke@1 | 128 | * @return A list of ZipFileIndex entries, or an empty list |
duke@1 | 129 | */ |
duke@1 | 130 | public static List<ZipFileIndex> getZipFileIndexes(boolean openedOnly) { |
duke@1 | 131 | List<ZipFileIndex> zipFileIndexes = new ArrayList<ZipFileIndex>(); |
duke@1 | 132 | lock.lock(); |
duke@1 | 133 | try { |
duke@1 | 134 | zipFileIndexes.addAll(zipFileIndexCache.values()); |
duke@1 | 135 | |
duke@1 | 136 | if (openedOnly) { |
duke@1 | 137 | for(ZipFileIndex elem : zipFileIndexes) { |
duke@1 | 138 | if (!elem.isOpen()) { |
duke@1 | 139 | zipFileIndexes.remove(elem); |
duke@1 | 140 | } |
duke@1 | 141 | } |
duke@1 | 142 | } |
duke@1 | 143 | } |
duke@1 | 144 | finally { |
duke@1 | 145 | lock.unlock(); |
duke@1 | 146 | } |
duke@1 | 147 | return zipFileIndexes; |
duke@1 | 148 | } |
duke@1 | 149 | |
duke@1 | 150 | public boolean isOpen() { |
duke@1 | 151 | lock.lock(); |
duke@1 | 152 | try { |
duke@1 | 153 | return zipRandomFile != null; |
duke@1 | 154 | } |
duke@1 | 155 | finally { |
duke@1 | 156 | lock.unlock(); |
duke@1 | 157 | } |
duke@1 | 158 | } |
duke@1 | 159 | |
jjg@103 | 160 | public static ZipFileIndex getZipFileIndex(File zipFile, |
jjg@103 | 161 | RelativeDirectory symbolFilePrefix, |
jjg@103 | 162 | boolean useCache, String cacheLocation, |
jjg@103 | 163 | boolean writeIndex) throws IOException { |
duke@1 | 164 | ZipFileIndex zi = null; |
duke@1 | 165 | lock.lock(); |
duke@1 | 166 | try { |
duke@1 | 167 | zi = getExistingZipIndex(zipFile); |
duke@1 | 168 | |
duke@1 | 169 | if (zi == null || (zi != null && zipFile.lastModified() != zi.zipFileLastModified)) { |
jjg@57 | 170 | zi = new ZipFileIndex(zipFile, symbolFilePrefix, writeIndex, |
duke@1 | 171 | useCache, cacheLocation); |
duke@1 | 172 | zipFileIndexCache.put(zipFile, zi); |
duke@1 | 173 | } |
duke@1 | 174 | } |
duke@1 | 175 | finally { |
duke@1 | 176 | lock.unlock(); |
duke@1 | 177 | } |
duke@1 | 178 | return zi; |
duke@1 | 179 | } |
duke@1 | 180 | |
duke@1 | 181 | public static ZipFileIndex getExistingZipIndex(File zipFile) { |
duke@1 | 182 | lock.lock(); |
duke@1 | 183 | try { |
duke@1 | 184 | return zipFileIndexCache.get(zipFile); |
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 clearCache() { |
duke@1 | 192 | lock.lock(); |
duke@1 | 193 | try { |
duke@1 | 194 | zipFileIndexCache.clear(); |
duke@1 | 195 | } |
duke@1 | 196 | finally { |
duke@1 | 197 | lock.unlock(); |
duke@1 | 198 | } |
duke@1 | 199 | } |
duke@1 | 200 | |
duke@1 | 201 | public static void clearCache(long timeNotUsed) { |
duke@1 | 202 | lock.lock(); |
duke@1 | 203 | try { |
duke@1 | 204 | Iterator<File> cachedFileIterator = zipFileIndexCache.keySet().iterator(); |
duke@1 | 205 | while (cachedFileIterator.hasNext()) { |
duke@1 | 206 | File cachedFile = cachedFileIterator.next(); |
duke@1 | 207 | ZipFileIndex cachedZipIndex = zipFileIndexCache.get(cachedFile); |
duke@1 | 208 | if (cachedZipIndex != null) { |
duke@1 | 209 | long timeToTest = cachedZipIndex.lastReferenceTimeStamp + timeNotUsed; |
duke@1 | 210 | if (timeToTest < cachedZipIndex.lastReferenceTimeStamp || // Overflow... |
duke@1 | 211 | System.currentTimeMillis() > timeToTest) { |
duke@1 | 212 | zipFileIndexCache.remove(cachedFile); |
duke@1 | 213 | } |
duke@1 | 214 | } |
duke@1 | 215 | } |
duke@1 | 216 | } |
duke@1 | 217 | finally { |
duke@1 | 218 | lock.unlock(); |
duke@1 | 219 | } |
duke@1 | 220 | } |
duke@1 | 221 | |
duke@1 | 222 | public static void removeFromCache(File file) { |
duke@1 | 223 | lock.lock(); |
duke@1 | 224 | try { |
duke@1 | 225 | zipFileIndexCache.remove(file); |
duke@1 | 226 | } |
duke@1 | 227 | finally { |
duke@1 | 228 | lock.unlock(); |
duke@1 | 229 | } |
duke@1 | 230 | } |
duke@1 | 231 | |
duke@1 | 232 | /** Sets already opened list of ZipFileIndexes from an outside client |
duke@1 | 233 | * of the compiler. This functionality should be used in a non-batch clients of the compiler. |
duke@1 | 234 | */ |
duke@1 | 235 | public static void setOpenedIndexes(List<ZipFileIndex>indexes) throws IllegalStateException { |
duke@1 | 236 | lock.lock(); |
duke@1 | 237 | try { |
duke@1 | 238 | if (zipFileIndexCache.isEmpty()) { |
duke@1 | 239 | throw new IllegalStateException("Setting opened indexes should be called only when the ZipFileCache is empty. Call JavacFileManager.flush() before calling this method."); |
duke@1 | 240 | } |
duke@1 | 241 | |
duke@1 | 242 | for (ZipFileIndex zfi : indexes) { |
duke@1 | 243 | zipFileIndexCache.put(zfi.zipFile, zfi); |
duke@1 | 244 | } |
duke@1 | 245 | } |
duke@1 | 246 | finally { |
duke@1 | 247 | lock.unlock(); |
duke@1 | 248 | } |
duke@1 | 249 | } |
duke@1 | 250 | |
jjg@103 | 251 | private ZipFileIndex(File zipFile, RelativeDirectory symbolFilePrefix, boolean writeIndex, |
duke@1 | 252 | boolean useCache, String cacheLocation) throws IOException { |
duke@1 | 253 | this.zipFile = zipFile; |
jjg@57 | 254 | this.symbolFilePrefix = symbolFilePrefix; |
jjg@57 | 255 | this.symbolFilePrefixLength = (symbolFilePrefix == null ? 0 : |
jjg@103 | 256 | symbolFilePrefix.getPath().getBytes("UTF-8").length); |
duke@1 | 257 | this.writeIndex = writeIndex; |
duke@1 | 258 | this.usePreindexedCache = useCache; |
duke@1 | 259 | this.preindexedCacheLocation = cacheLocation; |
duke@1 | 260 | |
duke@1 | 261 | if (zipFile != null) { |
duke@1 | 262 | this.zipFileLastModified = zipFile.lastModified(); |
duke@1 | 263 | } |
duke@1 | 264 | |
duke@1 | 265 | // Validate integrity of the zip file |
duke@1 | 266 | checkIndex(); |
duke@1 | 267 | } |
duke@1 | 268 | |
duke@1 | 269 | public String toString() { |
jjg@103 | 270 | return "ZipFileIndex[" + zipFile + "]"; |
duke@1 | 271 | } |
duke@1 | 272 | |
duke@1 | 273 | // Just in case... |
duke@1 | 274 | protected void finalize() { |
duke@1 | 275 | closeFile(); |
duke@1 | 276 | } |
duke@1 | 277 | |
duke@1 | 278 | private boolean isUpToDate() { |
duke@1 | 279 | if (zipFile != null && |
duke@1 | 280 | ((!NON_BATCH_MODE) || zipFileLastModified == zipFile.lastModified()) && |
duke@1 | 281 | hasPopulatedData) { |
duke@1 | 282 | return true; |
duke@1 | 283 | } |
duke@1 | 284 | |
duke@1 | 285 | return false; |
duke@1 | 286 | } |
duke@1 | 287 | |
duke@1 | 288 | /** |
duke@1 | 289 | * Here we need to make sure that the ZipFileIndex is valid. Check the timestamp of the file and |
duke@1 | 290 | * if its the same as the one at the time the index was build we don't need to reopen anything. |
duke@1 | 291 | */ |
duke@1 | 292 | private void checkIndex() throws IOException { |
duke@1 | 293 | boolean isUpToDate = true; |
duke@1 | 294 | if (!isUpToDate()) { |
duke@1 | 295 | closeFile(); |
duke@1 | 296 | isUpToDate = false; |
duke@1 | 297 | } |
duke@1 | 298 | |
duke@1 | 299 | if (zipRandomFile != null || isUpToDate) { |
duke@1 | 300 | lastReferenceTimeStamp = System.currentTimeMillis(); |
duke@1 | 301 | return; |
duke@1 | 302 | } |
duke@1 | 303 | |
duke@1 | 304 | hasPopulatedData = true; |
duke@1 | 305 | |
duke@1 | 306 | if (readIndex()) { |
duke@1 | 307 | lastReferenceTimeStamp = System.currentTimeMillis(); |
duke@1 | 308 | return; |
duke@1 | 309 | } |
duke@1 | 310 | |
jjg@103 | 311 | directories = Collections.<RelativeDirectory, DirectoryEntry>emptyMap(); |
jjg@103 | 312 | allDirs = Collections.<RelativeDirectory>emptySet(); |
duke@1 | 313 | |
duke@1 | 314 | try { |
duke@1 | 315 | openFile(); |
duke@1 | 316 | long totalLength = zipRandomFile.length(); |
duke@1 | 317 | ZipDirectory directory = new ZipDirectory(zipRandomFile, 0L, totalLength, this); |
duke@1 | 318 | directory.buildIndex(); |
duke@1 | 319 | } finally { |
duke@1 | 320 | if (zipRandomFile != null) { |
duke@1 | 321 | closeFile(); |
duke@1 | 322 | } |
duke@1 | 323 | } |
duke@1 | 324 | |
duke@1 | 325 | lastReferenceTimeStamp = System.currentTimeMillis(); |
duke@1 | 326 | } |
duke@1 | 327 | |
duke@1 | 328 | private void openFile() throws FileNotFoundException { |
duke@1 | 329 | if (zipRandomFile == null && zipFile != null) { |
duke@1 | 330 | zipRandomFile = new RandomAccessFile(zipFile, "r"); |
duke@1 | 331 | } |
duke@1 | 332 | } |
duke@1 | 333 | |
duke@1 | 334 | private void cleanupState() { |
duke@1 | 335 | // Make sure there is a valid but empty index if the file doesn't exist |
jjg@57 | 336 | entries = Entry.EMPTY_ARRAY; |
jjg@103 | 337 | directories = Collections.<RelativeDirectory, DirectoryEntry>emptyMap(); |
duke@1 | 338 | zipFileLastModified = NOT_MODIFIED; |
jjg@103 | 339 | allDirs = Collections.<RelativeDirectory>emptySet(); |
duke@1 | 340 | } |
duke@1 | 341 | |
duke@1 | 342 | public void close() { |
duke@1 | 343 | lock.lock(); |
duke@1 | 344 | try { |
duke@1 | 345 | writeIndex(); |
duke@1 | 346 | closeFile(); |
duke@1 | 347 | } |
duke@1 | 348 | finally { |
duke@1 | 349 | lock.unlock(); |
duke@1 | 350 | } |
duke@1 | 351 | } |
duke@1 | 352 | |
duke@1 | 353 | private void closeFile() { |
duke@1 | 354 | if (zipRandomFile != null) { |
duke@1 | 355 | try { |
duke@1 | 356 | zipRandomFile.close(); |
duke@1 | 357 | } catch (IOException ex) { |
duke@1 | 358 | } |
duke@1 | 359 | zipRandomFile = null; |
duke@1 | 360 | } |
duke@1 | 361 | } |
duke@1 | 362 | |
duke@1 | 363 | /** |
duke@1 | 364 | * Returns the ZipFileIndexEntry for an absolute path, if there is one. |
duke@1 | 365 | */ |
jjg@103 | 366 | Entry getZipIndexEntry(RelativePath path) { |
duke@1 | 367 | lock.lock(); |
duke@1 | 368 | try { |
duke@1 | 369 | checkIndex(); |
jjg@103 | 370 | DirectoryEntry de = directories.get(path.dirname()); |
jjg@103 | 371 | String lookFor = path.basename(); |
duke@1 | 372 | return de == null ? null : de.getEntry(lookFor); |
duke@1 | 373 | } |
duke@1 | 374 | catch (IOException e) { |
duke@1 | 375 | return null; |
duke@1 | 376 | } |
duke@1 | 377 | finally { |
duke@1 | 378 | lock.unlock(); |
duke@1 | 379 | } |
duke@1 | 380 | } |
duke@1 | 381 | |
duke@1 | 382 | /** |
duke@1 | 383 | * Returns a javac List of filenames within an absolute path in the ZipFileIndex. |
duke@1 | 384 | */ |
jjg@103 | 385 | public com.sun.tools.javac.util.List<String> getFiles(RelativeDirectory path) { |
duke@1 | 386 | lock.lock(); |
duke@1 | 387 | try { |
duke@1 | 388 | checkIndex(); |
duke@1 | 389 | |
duke@1 | 390 | DirectoryEntry de = directories.get(path); |
duke@1 | 391 | com.sun.tools.javac.util.List<String> ret = de == null ? null : de.getFiles(); |
duke@1 | 392 | |
duke@1 | 393 | if (ret == null) { |
duke@1 | 394 | return com.sun.tools.javac.util.List.<String>nil(); |
duke@1 | 395 | } |
duke@1 | 396 | return ret; |
duke@1 | 397 | } |
duke@1 | 398 | catch (IOException e) { |
duke@1 | 399 | return com.sun.tools.javac.util.List.<String>nil(); |
duke@1 | 400 | } |
duke@1 | 401 | finally { |
duke@1 | 402 | lock.unlock(); |
duke@1 | 403 | } |
duke@1 | 404 | } |
duke@1 | 405 | |
jjg@103 | 406 | public List<String> getDirectories(RelativeDirectory path) { |
duke@1 | 407 | lock.lock(); |
duke@1 | 408 | try { |
duke@1 | 409 | checkIndex(); |
duke@1 | 410 | |
duke@1 | 411 | DirectoryEntry de = directories.get(path); |
duke@1 | 412 | com.sun.tools.javac.util.List<String> ret = de == null ? null : de.getDirectories(); |
duke@1 | 413 | |
duke@1 | 414 | if (ret == null) { |
duke@1 | 415 | return com.sun.tools.javac.util.List.<String>nil(); |
duke@1 | 416 | } |
duke@1 | 417 | |
duke@1 | 418 | return ret; |
duke@1 | 419 | } |
duke@1 | 420 | catch (IOException e) { |
duke@1 | 421 | return com.sun.tools.javac.util.List.<String>nil(); |
duke@1 | 422 | } |
duke@1 | 423 | finally { |
duke@1 | 424 | lock.unlock(); |
duke@1 | 425 | } |
duke@1 | 426 | } |
duke@1 | 427 | |
jjg@103 | 428 | public Set<RelativeDirectory> getAllDirectories() { |
duke@1 | 429 | lock.lock(); |
duke@1 | 430 | try { |
duke@1 | 431 | checkIndex(); |
duke@1 | 432 | if (allDirs == Collections.EMPTY_SET) { |
jjg@103 | 433 | allDirs = new HashSet<RelativeDirectory>(directories.keySet()); |
duke@1 | 434 | } |
duke@1 | 435 | |
duke@1 | 436 | return allDirs; |
duke@1 | 437 | } |
duke@1 | 438 | catch (IOException e) { |
jjg@103 | 439 | return Collections.<RelativeDirectory>emptySet(); |
duke@1 | 440 | } |
duke@1 | 441 | finally { |
duke@1 | 442 | lock.unlock(); |
duke@1 | 443 | } |
duke@1 | 444 | } |
duke@1 | 445 | |
duke@1 | 446 | /** |
duke@1 | 447 | * Tests if a specific path exists in the zip. This method will return true |
duke@1 | 448 | * for file entries and directories. |
duke@1 | 449 | * |
duke@1 | 450 | * @param path A path within the zip. |
duke@1 | 451 | * @return True if the path is a file or dir, false otherwise. |
duke@1 | 452 | */ |
jjg@103 | 453 | public boolean contains(RelativePath path) { |
duke@1 | 454 | lock.lock(); |
duke@1 | 455 | try { |
duke@1 | 456 | checkIndex(); |
duke@1 | 457 | return getZipIndexEntry(path) != null; |
duke@1 | 458 | } |
duke@1 | 459 | catch (IOException e) { |
duke@1 | 460 | return false; |
duke@1 | 461 | } |
duke@1 | 462 | finally { |
duke@1 | 463 | lock.unlock(); |
duke@1 | 464 | } |
duke@1 | 465 | } |
duke@1 | 466 | |
jjg@103 | 467 | public boolean isDirectory(RelativePath path) throws IOException { |
duke@1 | 468 | lock.lock(); |
duke@1 | 469 | try { |
duke@1 | 470 | // The top level in a zip file is always a directory. |
jjg@103 | 471 | if (path.getPath().length() == 0) { |
duke@1 | 472 | lastReferenceTimeStamp = System.currentTimeMillis(); |
duke@1 | 473 | return true; |
duke@1 | 474 | } |
duke@1 | 475 | |
duke@1 | 476 | checkIndex(); |
duke@1 | 477 | return directories.get(path) != null; |
duke@1 | 478 | } |
duke@1 | 479 | finally { |
duke@1 | 480 | lock.unlock(); |
duke@1 | 481 | } |
duke@1 | 482 | } |
duke@1 | 483 | |
jjg@103 | 484 | public long getLastModified(RelativeFile path) throws IOException { |
duke@1 | 485 | lock.lock(); |
duke@1 | 486 | try { |
jjg@57 | 487 | Entry entry = getZipIndexEntry(path); |
duke@1 | 488 | if (entry == null) |
duke@1 | 489 | throw new FileNotFoundException(); |
duke@1 | 490 | return entry.getLastModified(); |
duke@1 | 491 | } |
duke@1 | 492 | finally { |
duke@1 | 493 | lock.unlock(); |
duke@1 | 494 | } |
duke@1 | 495 | } |
duke@1 | 496 | |
jjg@103 | 497 | public int length(RelativeFile path) throws IOException { |
duke@1 | 498 | lock.lock(); |
duke@1 | 499 | try { |
jjg@57 | 500 | Entry entry = getZipIndexEntry(path); |
duke@1 | 501 | if (entry == null) |
duke@1 | 502 | throw new FileNotFoundException(); |
duke@1 | 503 | |
duke@1 | 504 | if (entry.isDir) { |
duke@1 | 505 | return 0; |
duke@1 | 506 | } |
duke@1 | 507 | |
duke@1 | 508 | byte[] header = getHeader(entry); |
duke@1 | 509 | // entry is not compressed? |
duke@1 | 510 | if (get2ByteLittleEndian(header, 8) == 0) { |
duke@1 | 511 | return entry.compressedSize; |
duke@1 | 512 | } else { |
duke@1 | 513 | return entry.size; |
duke@1 | 514 | } |
duke@1 | 515 | } |
duke@1 | 516 | finally { |
duke@1 | 517 | lock.unlock(); |
duke@1 | 518 | } |
duke@1 | 519 | } |
duke@1 | 520 | |
jjg@103 | 521 | public byte[] read(RelativeFile path) throws IOException { |
duke@1 | 522 | lock.lock(); |
duke@1 | 523 | try { |
jjg@57 | 524 | Entry entry = getZipIndexEntry(path); |
duke@1 | 525 | if (entry == null) |
jjg@103 | 526 | throw new FileNotFoundException("Path not found in ZIP: " + path.path); |
duke@1 | 527 | return read(entry); |
duke@1 | 528 | } |
duke@1 | 529 | finally { |
duke@1 | 530 | lock.unlock(); |
duke@1 | 531 | } |
duke@1 | 532 | } |
duke@1 | 533 | |
jjg@57 | 534 | byte[] read(Entry entry) throws IOException { |
duke@1 | 535 | lock.lock(); |
duke@1 | 536 | try { |
duke@1 | 537 | openFile(); |
duke@1 | 538 | byte[] result = readBytes(entry); |
duke@1 | 539 | closeFile(); |
duke@1 | 540 | return result; |
duke@1 | 541 | } |
duke@1 | 542 | finally { |
duke@1 | 543 | lock.unlock(); |
duke@1 | 544 | } |
duke@1 | 545 | } |
duke@1 | 546 | |
jjg@103 | 547 | public int read(RelativeFile path, byte[] buffer) throws IOException { |
duke@1 | 548 | lock.lock(); |
duke@1 | 549 | try { |
jjg@57 | 550 | Entry entry = getZipIndexEntry(path); |
duke@1 | 551 | if (entry == null) |
duke@1 | 552 | throw new FileNotFoundException(); |
duke@1 | 553 | return read(entry, buffer); |
duke@1 | 554 | } |
duke@1 | 555 | finally { |
duke@1 | 556 | lock.unlock(); |
duke@1 | 557 | } |
duke@1 | 558 | } |
duke@1 | 559 | |
jjg@57 | 560 | int read(Entry entry, byte[] buffer) |
duke@1 | 561 | throws IOException { |
duke@1 | 562 | lock.lock(); |
duke@1 | 563 | try { |
duke@1 | 564 | int result = readBytes(entry, buffer); |
duke@1 | 565 | return result; |
duke@1 | 566 | } |
duke@1 | 567 | finally { |
duke@1 | 568 | lock.unlock(); |
duke@1 | 569 | } |
duke@1 | 570 | } |
duke@1 | 571 | |
jjg@57 | 572 | private byte[] readBytes(Entry entry) throws IOException { |
duke@1 | 573 | byte[] header = getHeader(entry); |
duke@1 | 574 | int csize = entry.compressedSize; |
duke@1 | 575 | byte[] cbuf = new byte[csize]; |
duke@1 | 576 | zipRandomFile.skipBytes(get2ByteLittleEndian(header, 26) + get2ByteLittleEndian(header, 28)); |
duke@1 | 577 | zipRandomFile.readFully(cbuf, 0, csize); |
duke@1 | 578 | |
duke@1 | 579 | // is this compressed - offset 8 in the ZipEntry header |
duke@1 | 580 | if (get2ByteLittleEndian(header, 8) == 0) |
duke@1 | 581 | return cbuf; |
duke@1 | 582 | |
duke@1 | 583 | int size = entry.size; |
duke@1 | 584 | byte[] buf = new byte[size]; |
duke@1 | 585 | if (inflate(cbuf, buf) != size) |
duke@1 | 586 | throw new ZipException("corrupted zip file"); |
duke@1 | 587 | |
duke@1 | 588 | return buf; |
duke@1 | 589 | } |
duke@1 | 590 | |
duke@1 | 591 | /** |
duke@1 | 592 | * |
duke@1 | 593 | */ |
jjg@57 | 594 | private int readBytes(Entry entry, byte[] buffer) throws IOException { |
duke@1 | 595 | byte[] header = getHeader(entry); |
duke@1 | 596 | |
duke@1 | 597 | // entry is not compressed? |
duke@1 | 598 | if (get2ByteLittleEndian(header, 8) == 0) { |
duke@1 | 599 | zipRandomFile.skipBytes(get2ByteLittleEndian(header, 26) + get2ByteLittleEndian(header, 28)); |
duke@1 | 600 | int offset = 0; |
duke@1 | 601 | int size = buffer.length; |
duke@1 | 602 | while (offset < size) { |
duke@1 | 603 | int count = zipRandomFile.read(buffer, offset, size - offset); |
duke@1 | 604 | if (count == -1) |
duke@1 | 605 | break; |
duke@1 | 606 | offset += count; |
duke@1 | 607 | } |
duke@1 | 608 | return entry.size; |
duke@1 | 609 | } |
duke@1 | 610 | |
duke@1 | 611 | int csize = entry.compressedSize; |
duke@1 | 612 | byte[] cbuf = new byte[csize]; |
duke@1 | 613 | zipRandomFile.skipBytes(get2ByteLittleEndian(header, 26) + get2ByteLittleEndian(header, 28)); |
duke@1 | 614 | zipRandomFile.readFully(cbuf, 0, csize); |
duke@1 | 615 | |
duke@1 | 616 | int count = inflate(cbuf, buffer); |
duke@1 | 617 | if (count == -1) |
duke@1 | 618 | throw new ZipException("corrupted zip file"); |
duke@1 | 619 | |
duke@1 | 620 | return entry.size; |
duke@1 | 621 | } |
duke@1 | 622 | |
duke@1 | 623 | //---------------------------------------------------------------------------- |
duke@1 | 624 | // Zip utilities |
duke@1 | 625 | //---------------------------------------------------------------------------- |
duke@1 | 626 | |
jjg@57 | 627 | private byte[] getHeader(Entry entry) throws IOException { |
duke@1 | 628 | zipRandomFile.seek(entry.offset); |
duke@1 | 629 | byte[] header = new byte[30]; |
duke@1 | 630 | zipRandomFile.readFully(header); |
duke@1 | 631 | if (get4ByteLittleEndian(header, 0) != 0x04034b50) |
duke@1 | 632 | throw new ZipException("corrupted zip file"); |
duke@1 | 633 | if ((get2ByteLittleEndian(header, 6) & 1) != 0) |
duke@1 | 634 | throw new ZipException("encrypted zip file"); // offset 6 in the header of the ZipFileEntry |
duke@1 | 635 | return header; |
duke@1 | 636 | } |
duke@1 | 637 | |
duke@1 | 638 | /* |
duke@1 | 639 | * Inflate using the java.util.zip.Inflater class |
duke@1 | 640 | */ |
duke@1 | 641 | private static Inflater inflater; |
duke@1 | 642 | private int inflate(byte[] src, byte[] dest) { |
duke@1 | 643 | |
duke@1 | 644 | // construct the inflater object or reuse an existing one |
duke@1 | 645 | if (inflater == null) |
duke@1 | 646 | inflater = new Inflater(true); |
duke@1 | 647 | |
duke@1 | 648 | synchronized (inflater) { |
duke@1 | 649 | inflater.reset(); |
duke@1 | 650 | inflater.setInput(src); |
duke@1 | 651 | try { |
duke@1 | 652 | return inflater.inflate(dest); |
duke@1 | 653 | } catch (DataFormatException ex) { |
duke@1 | 654 | return -1; |
duke@1 | 655 | } |
duke@1 | 656 | } |
duke@1 | 657 | } |
duke@1 | 658 | |
duke@1 | 659 | /** |
duke@1 | 660 | * return the two bytes buf[pos], buf[pos+1] as an unsigned integer in little |
duke@1 | 661 | * endian format. |
duke@1 | 662 | */ |
duke@1 | 663 | private static int get2ByteLittleEndian(byte[] buf, int pos) { |
duke@1 | 664 | return (buf[pos] & 0xFF) + ((buf[pos+1] & 0xFF) << 8); |
duke@1 | 665 | } |
duke@1 | 666 | |
duke@1 | 667 | /** |
duke@1 | 668 | * return the 4 bytes buf[i..i+3] as an integer in little endian format. |
duke@1 | 669 | */ |
duke@1 | 670 | private static int get4ByteLittleEndian(byte[] buf, int pos) { |
duke@1 | 671 | return (buf[pos] & 0xFF) + ((buf[pos + 1] & 0xFF) << 8) + |
duke@1 | 672 | ((buf[pos + 2] & 0xFF) << 16) + ((buf[pos + 3] & 0xFF) << 24); |
duke@1 | 673 | } |
duke@1 | 674 | |
duke@1 | 675 | /* ---------------------------------------------------------------------------- |
duke@1 | 676 | * ZipDirectory |
duke@1 | 677 | * ----------------------------------------------------------------------------*/ |
duke@1 | 678 | |
duke@1 | 679 | private class ZipDirectory { |
jjg@103 | 680 | private RelativeDirectory lastDir; |
duke@1 | 681 | private int lastStart; |
duke@1 | 682 | private int lastLen; |
duke@1 | 683 | |
duke@1 | 684 | byte[] zipDir; |
duke@1 | 685 | RandomAccessFile zipRandomFile = null; |
duke@1 | 686 | ZipFileIndex zipFileIndex = null; |
duke@1 | 687 | |
duke@1 | 688 | public ZipDirectory(RandomAccessFile zipRandomFile, long start, long end, ZipFileIndex index) throws IOException { |
duke@1 | 689 | this.zipRandomFile = zipRandomFile; |
duke@1 | 690 | this.zipFileIndex = index; |
duke@1 | 691 | |
duke@1 | 692 | findCENRecord(start, end); |
duke@1 | 693 | } |
duke@1 | 694 | |
duke@1 | 695 | /* |
duke@1 | 696 | * Reads zip file central directory. |
duke@1 | 697 | * For more details see readCEN in zip_util.c from the JDK sources. |
duke@1 | 698 | * This is a Java port of that function. |
duke@1 | 699 | */ |
duke@1 | 700 | private void findCENRecord(long start, long end) throws IOException { |
duke@1 | 701 | long totalLength = end - start; |
duke@1 | 702 | int endbuflen = 1024; |
duke@1 | 703 | byte[] endbuf = new byte[endbuflen]; |
duke@1 | 704 | long endbufend = end - start; |
duke@1 | 705 | |
duke@1 | 706 | // There is a variable-length field after the dir offset record. We need to do consequential search. |
duke@1 | 707 | while (endbufend >= 22) { |
duke@1 | 708 | if (endbufend < endbuflen) |
duke@1 | 709 | endbuflen = (int)endbufend; |
duke@1 | 710 | long endbufpos = endbufend - endbuflen; |
duke@1 | 711 | zipRandomFile.seek(start + endbufpos); |
duke@1 | 712 | zipRandomFile.readFully(endbuf, 0, endbuflen); |
duke@1 | 713 | int i = endbuflen - 22; |
duke@1 | 714 | while (i >= 0 && |
duke@1 | 715 | !(endbuf[i] == 0x50 && |
duke@1 | 716 | endbuf[i + 1] == 0x4b && |
duke@1 | 717 | endbuf[i + 2] == 0x05 && |
duke@1 | 718 | endbuf[i + 3] == 0x06 && |
duke@1 | 719 | endbufpos + i + 22 + |
duke@1 | 720 | get2ByteLittleEndian(endbuf, i + 20) == totalLength)) { |
duke@1 | 721 | i--; |
duke@1 | 722 | } |
duke@1 | 723 | |
duke@1 | 724 | if (i >= 0) { |
duke@1 | 725 | zipDir = new byte[get4ByteLittleEndian(endbuf, i + 12) + 2]; |
duke@1 | 726 | zipDir[0] = endbuf[i + 10]; |
duke@1 | 727 | zipDir[1] = endbuf[i + 11]; |
duke@1 | 728 | zipRandomFile.seek(start + get4ByteLittleEndian(endbuf, i + 16)); |
duke@1 | 729 | zipRandomFile.readFully(zipDir, 2, zipDir.length - 2); |
duke@1 | 730 | return; |
duke@1 | 731 | } else { |
duke@1 | 732 | endbufend = endbufpos + 21; |
duke@1 | 733 | } |
duke@1 | 734 | } |
duke@1 | 735 | throw new ZipException("cannot read zip file"); |
duke@1 | 736 | } |
jjg@103 | 737 | |
duke@1 | 738 | private void buildIndex() throws IOException { |
duke@1 | 739 | int entryCount = get2ByteLittleEndian(zipDir, 0); |
duke@1 | 740 | |
duke@1 | 741 | // Add each of the files |
duke@1 | 742 | if (entryCount > 0) { |
jjg@103 | 743 | directories = new HashMap<RelativeDirectory, DirectoryEntry>(); |
jjg@57 | 744 | ArrayList<Entry> entryList = new ArrayList<Entry>(); |
duke@1 | 745 | int pos = 2; |
duke@1 | 746 | for (int i = 0; i < entryCount; i++) { |
duke@1 | 747 | pos = readEntry(pos, entryList, directories); |
duke@1 | 748 | } |
duke@1 | 749 | |
duke@1 | 750 | // Add the accumulated dirs into the same list |
jjg@103 | 751 | for (RelativeDirectory d: directories.keySet()) { |
jjg@103 | 752 | // use shared RelativeDirectory objects for parent dirs |
jjg@103 | 753 | RelativeDirectory parent = getRelativeDirectory(d.dirname().getPath()); |
jjg@103 | 754 | String file = d.basename(); |
jjg@103 | 755 | Entry zipFileIndexEntry = new Entry(parent, file); |
duke@1 | 756 | zipFileIndexEntry.isDir = true; |
duke@1 | 757 | entryList.add(zipFileIndexEntry); |
duke@1 | 758 | } |
duke@1 | 759 | |
jjg@57 | 760 | entries = entryList.toArray(new Entry[entryList.size()]); |
duke@1 | 761 | Arrays.sort(entries); |
duke@1 | 762 | } else { |
duke@1 | 763 | cleanupState(); |
duke@1 | 764 | } |
duke@1 | 765 | } |
duke@1 | 766 | |
jjg@57 | 767 | private int readEntry(int pos, List<Entry> entryList, |
jjg@103 | 768 | Map<RelativeDirectory, DirectoryEntry> directories) throws IOException { |
duke@1 | 769 | if (get4ByteLittleEndian(zipDir, pos) != 0x02014b50) { |
duke@1 | 770 | throw new ZipException("cannot read zip file entry"); |
duke@1 | 771 | } |
duke@1 | 772 | |
duke@1 | 773 | int dirStart = pos + 46; |
duke@1 | 774 | int fileStart = dirStart; |
duke@1 | 775 | int fileEnd = fileStart + get2ByteLittleEndian(zipDir, pos + 28); |
duke@1 | 776 | |
duke@1 | 777 | if (zipFileIndex.symbolFilePrefixLength != 0 && |
duke@1 | 778 | ((fileEnd - fileStart) >= symbolFilePrefixLength)) { |
duke@1 | 779 | dirStart += zipFileIndex.symbolFilePrefixLength; |
duke@1 | 780 | fileStart += zipFileIndex.symbolFilePrefixLength; |
duke@1 | 781 | } |
jjg@103 | 782 | // Force any '\' to '/'. Keep the position of the last separator. |
duke@1 | 783 | for (int index = fileStart; index < fileEnd; index++) { |
duke@1 | 784 | byte nextByte = zipDir[index]; |
jjg@103 | 785 | if (nextByte == (byte)'\\') { |
jjg@103 | 786 | zipDir[index] = (byte)'/'; |
jjg@103 | 787 | fileStart = index + 1; |
jjg@103 | 788 | } else if (nextByte == (byte)'/') { |
duke@1 | 789 | fileStart = index + 1; |
duke@1 | 790 | } |
duke@1 | 791 | } |
duke@1 | 792 | |
jjg@103 | 793 | RelativeDirectory directory = null; |
duke@1 | 794 | if (fileStart == dirStart) |
jjg@103 | 795 | directory = getRelativeDirectory(""); |
duke@1 | 796 | else if (lastDir != null && lastLen == fileStart - dirStart - 1) { |
duke@1 | 797 | int index = lastLen - 1; |
duke@1 | 798 | while (zipDir[lastStart + index] == zipDir[dirStart + index]) { |
duke@1 | 799 | if (index == 0) { |
duke@1 | 800 | directory = lastDir; |
duke@1 | 801 | break; |
duke@1 | 802 | } |
duke@1 | 803 | index--; |
duke@1 | 804 | } |
duke@1 | 805 | } |
duke@1 | 806 | |
duke@1 | 807 | // Sub directories |
duke@1 | 808 | if (directory == null) { |
duke@1 | 809 | lastStart = dirStart; |
duke@1 | 810 | lastLen = fileStart - dirStart - 1; |
duke@1 | 811 | |
jjg@103 | 812 | directory = getRelativeDirectory(new String(zipDir, dirStart, lastLen, "UTF-8")); |
duke@1 | 813 | lastDir = directory; |
duke@1 | 814 | |
duke@1 | 815 | // Enter also all the parent directories |
jjg@103 | 816 | RelativeDirectory tempDirectory = directory; |
duke@1 | 817 | |
duke@1 | 818 | while (directories.get(tempDirectory) == null) { |
duke@1 | 819 | directories.put(tempDirectory, new DirectoryEntry(tempDirectory, zipFileIndex)); |
jjg@103 | 820 | if (tempDirectory.path.indexOf("/") == tempDirectory.path.length() - 1) |
duke@1 | 821 | break; |
jjg@103 | 822 | else { |
jjg@103 | 823 | // use shared RelativeDirectory objects for parent dirs |
jjg@103 | 824 | tempDirectory = getRelativeDirectory(tempDirectory.dirname().getPath()); |
jjg@103 | 825 | } |
duke@1 | 826 | } |
duke@1 | 827 | } |
duke@1 | 828 | else { |
duke@1 | 829 | if (directories.get(directory) == null) { |
duke@1 | 830 | directories.put(directory, new DirectoryEntry(directory, zipFileIndex)); |
duke@1 | 831 | } |
duke@1 | 832 | } |
duke@1 | 833 | |
duke@1 | 834 | // For each dir create also a file |
duke@1 | 835 | if (fileStart != fileEnd) { |
jjg@57 | 836 | Entry entry = new Entry(directory, |
duke@1 | 837 | new String(zipDir, fileStart, fileEnd - fileStart, "UTF-8")); |
duke@1 | 838 | |
duke@1 | 839 | entry.setNativeTime(get4ByteLittleEndian(zipDir, pos + 12)); |
duke@1 | 840 | entry.compressedSize = get4ByteLittleEndian(zipDir, pos + 20); |
duke@1 | 841 | entry.size = get4ByteLittleEndian(zipDir, pos + 24); |
duke@1 | 842 | entry.offset = get4ByteLittleEndian(zipDir, pos + 42); |
duke@1 | 843 | entryList.add(entry); |
duke@1 | 844 | } |
duke@1 | 845 | |
duke@1 | 846 | return pos + 46 + |
duke@1 | 847 | get2ByteLittleEndian(zipDir, pos + 28) + |
duke@1 | 848 | get2ByteLittleEndian(zipDir, pos + 30) + |
duke@1 | 849 | get2ByteLittleEndian(zipDir, pos + 32); |
duke@1 | 850 | } |
duke@1 | 851 | } |
duke@1 | 852 | |
duke@1 | 853 | /** |
duke@1 | 854 | * Returns the last modified timestamp of a zip file. |
duke@1 | 855 | * @return long |
duke@1 | 856 | */ |
duke@1 | 857 | public long getZipFileLastModified() throws IOException { |
duke@1 | 858 | lock.lock(); |
duke@1 | 859 | try { |
duke@1 | 860 | checkIndex(); |
duke@1 | 861 | return zipFileLastModified; |
duke@1 | 862 | } |
duke@1 | 863 | finally { |
duke@1 | 864 | lock.unlock(); |
duke@1 | 865 | } |
duke@1 | 866 | } |
duke@1 | 867 | |
duke@1 | 868 | /** ------------------------------------------------------------------------ |
duke@1 | 869 | * DirectoryEntry class |
duke@1 | 870 | * -------------------------------------------------------------------------*/ |
jjg@57 | 871 | |
duke@1 | 872 | static class DirectoryEntry { |
duke@1 | 873 | private boolean filesInited; |
duke@1 | 874 | private boolean directoriesInited; |
duke@1 | 875 | private boolean zipFileEntriesInited; |
duke@1 | 876 | private boolean entriesInited; |
duke@1 | 877 | |
duke@1 | 878 | private long writtenOffsetOffset = 0; |
duke@1 | 879 | |
jjg@103 | 880 | private RelativeDirectory dirName; |
duke@1 | 881 | |
duke@1 | 882 | private com.sun.tools.javac.util.List<String> zipFileEntriesFiles = com.sun.tools.javac.util.List.<String>nil(); |
duke@1 | 883 | private com.sun.tools.javac.util.List<String> zipFileEntriesDirectories = com.sun.tools.javac.util.List.<String>nil(); |
jjg@57 | 884 | private com.sun.tools.javac.util.List<Entry> zipFileEntries = com.sun.tools.javac.util.List.<Entry>nil(); |
duke@1 | 885 | |
jjg@57 | 886 | private List<Entry> entries = new ArrayList<Entry>(); |
duke@1 | 887 | |
duke@1 | 888 | private ZipFileIndex zipFileIndex; |
duke@1 | 889 | |
duke@1 | 890 | private int numEntries; |
duke@1 | 891 | |
jjg@103 | 892 | DirectoryEntry(RelativeDirectory dirName, ZipFileIndex index) { |
jjg@103 | 893 | filesInited = false; |
duke@1 | 894 | directoriesInited = false; |
duke@1 | 895 | entriesInited = false; |
duke@1 | 896 | |
jjg@103 | 897 | this.dirName = dirName; |
duke@1 | 898 | this.zipFileIndex = index; |
duke@1 | 899 | } |
duke@1 | 900 | |
duke@1 | 901 | private com.sun.tools.javac.util.List<String> getFiles() { |
jjg@103 | 902 | if (!filesInited) { |
jjg@103 | 903 | initEntries(); |
jjg@103 | 904 | for (Entry e : entries) { |
jjg@103 | 905 | if (!e.isDir) { |
jjg@103 | 906 | zipFileEntriesFiles = zipFileEntriesFiles.append(e.name); |
jjg@103 | 907 | } |
jjg@103 | 908 | } |
jjg@103 | 909 | filesInited = true; |
duke@1 | 910 | } |
duke@1 | 911 | return zipFileEntriesFiles; |
duke@1 | 912 | } |
duke@1 | 913 | |
duke@1 | 914 | private com.sun.tools.javac.util.List<String> getDirectories() { |
jjg@103 | 915 | if (!directoriesInited) { |
jjg@103 | 916 | initEntries(); |
jjg@103 | 917 | for (Entry e : entries) { |
jjg@103 | 918 | if (e.isDir) { |
jjg@103 | 919 | zipFileEntriesDirectories = zipFileEntriesDirectories.append(e.name); |
jjg@103 | 920 | } |
jjg@103 | 921 | } |
jjg@103 | 922 | directoriesInited = true; |
duke@1 | 923 | } |
duke@1 | 924 | return zipFileEntriesDirectories; |
duke@1 | 925 | } |
duke@1 | 926 | |
jjg@57 | 927 | private com.sun.tools.javac.util.List<Entry> getEntries() { |
jjg@103 | 928 | if (!zipFileEntriesInited) { |
jjg@103 | 929 | initEntries(); |
jjg@103 | 930 | zipFileEntries = com.sun.tools.javac.util.List.nil(); |
jjg@103 | 931 | for (Entry zfie : entries) { |
jjg@103 | 932 | zipFileEntries = zipFileEntries.append(zfie); |
jjg@103 | 933 | } |
jjg@103 | 934 | zipFileEntriesInited = true; |
duke@1 | 935 | } |
duke@1 | 936 | return zipFileEntries; |
duke@1 | 937 | } |
duke@1 | 938 | |
jjg@57 | 939 | private Entry getEntry(String rootName) { |
duke@1 | 940 | initEntries(); |
jjg@57 | 941 | int index = Collections.binarySearch(entries, new Entry(dirName, rootName)); |
duke@1 | 942 | if (index < 0) { |
duke@1 | 943 | return null; |
duke@1 | 944 | } |
duke@1 | 945 | |
duke@1 | 946 | return entries.get(index); |
duke@1 | 947 | } |
duke@1 | 948 | |
duke@1 | 949 | private void initEntries() { |
duke@1 | 950 | if (entriesInited) { |
duke@1 | 951 | return; |
duke@1 | 952 | } |
duke@1 | 953 | |
duke@1 | 954 | if (!zipFileIndex.readFromIndex) { |
duke@1 | 955 | int from = -Arrays.binarySearch(zipFileIndex.entries, |
jjg@57 | 956 | new Entry(dirName, ZipFileIndex.MIN_CHAR)) - 1; |
duke@1 | 957 | int to = -Arrays.binarySearch(zipFileIndex.entries, |
jjg@57 | 958 | new Entry(dirName, MAX_CHAR)) - 1; |
duke@1 | 959 | |
duke@1 | 960 | for (int i = from; i < to; i++) { |
duke@1 | 961 | entries.add(zipFileIndex.entries[i]); |
duke@1 | 962 | } |
duke@1 | 963 | } else { |
duke@1 | 964 | File indexFile = zipFileIndex.getIndexFile(); |
duke@1 | 965 | if (indexFile != null) { |
duke@1 | 966 | RandomAccessFile raf = null; |
duke@1 | 967 | try { |
duke@1 | 968 | raf = new RandomAccessFile(indexFile, "r"); |
duke@1 | 969 | raf.seek(writtenOffsetOffset); |
duke@1 | 970 | |
duke@1 | 971 | for (int nFiles = 0; nFiles < numEntries; nFiles++) { |
duke@1 | 972 | // Read the name bytes |
duke@1 | 973 | int zfieNameBytesLen = raf.readInt(); |
duke@1 | 974 | byte [] zfieNameBytes = new byte[zfieNameBytesLen]; |
duke@1 | 975 | raf.read(zfieNameBytes); |
duke@1 | 976 | String eName = new String(zfieNameBytes, "UTF-8"); |
duke@1 | 977 | |
duke@1 | 978 | // Read isDir |
duke@1 | 979 | boolean eIsDir = raf.readByte() == (byte)0 ? false : true; |
duke@1 | 980 | |
duke@1 | 981 | // Read offset of bytes in the real Jar/Zip file |
duke@1 | 982 | int eOffset = raf.readInt(); |
duke@1 | 983 | |
duke@1 | 984 | // Read size of the file in the real Jar/Zip file |
duke@1 | 985 | int eSize = raf.readInt(); |
duke@1 | 986 | |
duke@1 | 987 | // Read compressed size of the file in the real Jar/Zip file |
duke@1 | 988 | int eCsize = raf.readInt(); |
duke@1 | 989 | |
duke@1 | 990 | // Read java time stamp of the file in the real Jar/Zip file |
duke@1 | 991 | long eJavaTimestamp = raf.readLong(); |
duke@1 | 992 | |
jjg@57 | 993 | Entry rfie = new Entry(dirName, eName); |
duke@1 | 994 | rfie.isDir = eIsDir; |
duke@1 | 995 | rfie.offset = eOffset; |
duke@1 | 996 | rfie.size = eSize; |
duke@1 | 997 | rfie.compressedSize = eCsize; |
duke@1 | 998 | rfie.javatime = eJavaTimestamp; |
duke@1 | 999 | entries.add(rfie); |
duke@1 | 1000 | } |
duke@1 | 1001 | } catch (Throwable t) { |
duke@1 | 1002 | // Do nothing |
duke@1 | 1003 | } finally { |
duke@1 | 1004 | try { |
jjg@444 | 1005 | if (raf != null) { |
duke@1 | 1006 | raf.close(); |
duke@1 | 1007 | } |
duke@1 | 1008 | } catch (Throwable t) { |
duke@1 | 1009 | // Do nothing |
duke@1 | 1010 | } |
duke@1 | 1011 | } |
duke@1 | 1012 | } |
duke@1 | 1013 | } |
duke@1 | 1014 | |
duke@1 | 1015 | entriesInited = true; |
duke@1 | 1016 | } |
duke@1 | 1017 | |
jjg@57 | 1018 | List<Entry> getEntriesAsCollection() { |
duke@1 | 1019 | initEntries(); |
duke@1 | 1020 | |
duke@1 | 1021 | return entries; |
duke@1 | 1022 | } |
duke@1 | 1023 | } |
duke@1 | 1024 | |
duke@1 | 1025 | private boolean readIndex() { |
duke@1 | 1026 | if (triedToReadIndex || !usePreindexedCache) { |
duke@1 | 1027 | return false; |
duke@1 | 1028 | } |
duke@1 | 1029 | |
duke@1 | 1030 | boolean ret = false; |
duke@1 | 1031 | lock.lock(); |
duke@1 | 1032 | try { |
duke@1 | 1033 | triedToReadIndex = true; |
duke@1 | 1034 | RandomAccessFile raf = null; |
duke@1 | 1035 | try { |
duke@1 | 1036 | File indexFileName = getIndexFile(); |
duke@1 | 1037 | raf = new RandomAccessFile(indexFileName, "r"); |
duke@1 | 1038 | |
duke@1 | 1039 | long fileStamp = raf.readLong(); |
duke@1 | 1040 | if (zipFile.lastModified() != fileStamp) { |
duke@1 | 1041 | ret = false; |
duke@1 | 1042 | } else { |
jjg@103 | 1043 | directories = new HashMap<RelativeDirectory, DirectoryEntry>(); |
duke@1 | 1044 | int numDirs = raf.readInt(); |
duke@1 | 1045 | for (int nDirs = 0; nDirs < numDirs; nDirs++) { |
duke@1 | 1046 | int dirNameBytesLen = raf.readInt(); |
duke@1 | 1047 | byte [] dirNameBytes = new byte[dirNameBytesLen]; |
duke@1 | 1048 | raf.read(dirNameBytes); |
duke@1 | 1049 | |
jjg@103 | 1050 | RelativeDirectory dirNameStr = getRelativeDirectory(new String(dirNameBytes, "UTF-8")); |
duke@1 | 1051 | DirectoryEntry de = new DirectoryEntry(dirNameStr, this); |
duke@1 | 1052 | de.numEntries = raf.readInt(); |
duke@1 | 1053 | de.writtenOffsetOffset = raf.readLong(); |
duke@1 | 1054 | directories.put(dirNameStr, de); |
duke@1 | 1055 | } |
duke@1 | 1056 | ret = true; |
duke@1 | 1057 | zipFileLastModified = fileStamp; |
duke@1 | 1058 | } |
duke@1 | 1059 | } catch (Throwable t) { |
duke@1 | 1060 | // Do nothing |
duke@1 | 1061 | } finally { |
duke@1 | 1062 | if (raf != null) { |
duke@1 | 1063 | try { |
duke@1 | 1064 | raf.close(); |
duke@1 | 1065 | } catch (Throwable tt) { |
duke@1 | 1066 | // Do nothing |
duke@1 | 1067 | } |
duke@1 | 1068 | } |
duke@1 | 1069 | } |
duke@1 | 1070 | if (ret == true) { |
duke@1 | 1071 | readFromIndex = true; |
duke@1 | 1072 | } |
duke@1 | 1073 | } |
duke@1 | 1074 | finally { |
duke@1 | 1075 | lock.unlock(); |
duke@1 | 1076 | } |
duke@1 | 1077 | |
duke@1 | 1078 | return ret; |
duke@1 | 1079 | } |
duke@1 | 1080 | |
duke@1 | 1081 | private boolean writeIndex() { |
duke@1 | 1082 | boolean ret = false; |
duke@1 | 1083 | if (readFromIndex || !usePreindexedCache) { |
duke@1 | 1084 | return true; |
duke@1 | 1085 | } |
duke@1 | 1086 | |
duke@1 | 1087 | if (!writeIndex) { |
duke@1 | 1088 | return true; |
duke@1 | 1089 | } |
duke@1 | 1090 | |
duke@1 | 1091 | File indexFile = getIndexFile(); |
duke@1 | 1092 | if (indexFile == null) { |
duke@1 | 1093 | return false; |
duke@1 | 1094 | } |
duke@1 | 1095 | |
duke@1 | 1096 | RandomAccessFile raf = null; |
duke@1 | 1097 | long writtenSoFar = 0; |
duke@1 | 1098 | try { |
duke@1 | 1099 | raf = new RandomAccessFile(indexFile, "rw"); |
duke@1 | 1100 | |
duke@1 | 1101 | raf.writeLong(zipFileLastModified); |
duke@1 | 1102 | writtenSoFar += 8; |
duke@1 | 1103 | |
duke@1 | 1104 | List<DirectoryEntry> directoriesToWrite = new ArrayList<DirectoryEntry>(); |
jjg@103 | 1105 | Map<RelativeDirectory, Long> offsets = new HashMap<RelativeDirectory, Long>(); |
duke@1 | 1106 | raf.writeInt(directories.keySet().size()); |
duke@1 | 1107 | writtenSoFar += 4; |
duke@1 | 1108 | |
jjg@103 | 1109 | for (RelativeDirectory dirName: directories.keySet()) { |
duke@1 | 1110 | DirectoryEntry dirEntry = directories.get(dirName); |
duke@1 | 1111 | |
duke@1 | 1112 | directoriesToWrite.add(dirEntry); |
duke@1 | 1113 | |
duke@1 | 1114 | // Write the dir name bytes |
jjg@103 | 1115 | byte [] dirNameBytes = dirName.getPath().getBytes("UTF-8"); |
duke@1 | 1116 | int dirNameBytesLen = dirNameBytes.length; |
duke@1 | 1117 | raf.writeInt(dirNameBytesLen); |
duke@1 | 1118 | writtenSoFar += 4; |
duke@1 | 1119 | |
duke@1 | 1120 | raf.write(dirNameBytes); |
duke@1 | 1121 | writtenSoFar += dirNameBytesLen; |
duke@1 | 1122 | |
duke@1 | 1123 | // Write the number of files in the dir |
mcimadamore@184 | 1124 | List<Entry> dirEntries = dirEntry.getEntriesAsCollection(); |
duke@1 | 1125 | raf.writeInt(dirEntries.size()); |
duke@1 | 1126 | writtenSoFar += 4; |
duke@1 | 1127 | |
duke@1 | 1128 | offsets.put(dirName, new Long(writtenSoFar)); |
duke@1 | 1129 | |
duke@1 | 1130 | // Write the offset of the file's data in the dir |
duke@1 | 1131 | dirEntry.writtenOffsetOffset = 0L; |
duke@1 | 1132 | raf.writeLong(0L); |
duke@1 | 1133 | writtenSoFar += 8; |
duke@1 | 1134 | } |
duke@1 | 1135 | |
duke@1 | 1136 | for (DirectoryEntry de : directoriesToWrite) { |
duke@1 | 1137 | // Fix up the offset in the directory table |
duke@1 | 1138 | long currFP = raf.getFilePointer(); |
duke@1 | 1139 | |
duke@1 | 1140 | long offsetOffset = offsets.get(de.dirName).longValue(); |
duke@1 | 1141 | raf.seek(offsetOffset); |
duke@1 | 1142 | raf.writeLong(writtenSoFar); |
duke@1 | 1143 | |
duke@1 | 1144 | raf.seek(currFP); |
duke@1 | 1145 | |
duke@1 | 1146 | // Now write each of the files in the DirectoryEntry |
jjg@57 | 1147 | List<Entry> entries = de.getEntriesAsCollection(); |
jjg@57 | 1148 | for (Entry zfie : entries) { |
duke@1 | 1149 | // Write the name bytes |
duke@1 | 1150 | byte [] zfieNameBytes = zfie.name.getBytes("UTF-8"); |
duke@1 | 1151 | int zfieNameBytesLen = zfieNameBytes.length; |
duke@1 | 1152 | raf.writeInt(zfieNameBytesLen); |
duke@1 | 1153 | writtenSoFar += 4; |
duke@1 | 1154 | raf.write(zfieNameBytes); |
duke@1 | 1155 | writtenSoFar += zfieNameBytesLen; |
duke@1 | 1156 | |
duke@1 | 1157 | // Write isDir |
duke@1 | 1158 | raf.writeByte(zfie.isDir ? (byte)1 : (byte)0); |
duke@1 | 1159 | writtenSoFar += 1; |
duke@1 | 1160 | |
duke@1 | 1161 | // Write offset of bytes in the real Jar/Zip file |
duke@1 | 1162 | raf.writeInt(zfie.offset); |
duke@1 | 1163 | writtenSoFar += 4; |
duke@1 | 1164 | |
duke@1 | 1165 | // Write size of the file in the real Jar/Zip file |
duke@1 | 1166 | raf.writeInt(zfie.size); |
duke@1 | 1167 | writtenSoFar += 4; |
duke@1 | 1168 | |
duke@1 | 1169 | // Write compressed size of the file in the real Jar/Zip file |
duke@1 | 1170 | raf.writeInt(zfie.compressedSize); |
duke@1 | 1171 | writtenSoFar += 4; |
duke@1 | 1172 | |
duke@1 | 1173 | // Write java time stamp of the file in the real Jar/Zip file |
duke@1 | 1174 | raf.writeLong(zfie.getLastModified()); |
duke@1 | 1175 | writtenSoFar += 8; |
duke@1 | 1176 | } |
duke@1 | 1177 | } |
duke@1 | 1178 | } catch (Throwable t) { |
duke@1 | 1179 | // Do nothing |
duke@1 | 1180 | } finally { |
duke@1 | 1181 | try { |
duke@1 | 1182 | if (raf != null) { |
duke@1 | 1183 | raf.close(); |
duke@1 | 1184 | } |
duke@1 | 1185 | } catch(IOException ioe) { |
duke@1 | 1186 | // Do nothing |
duke@1 | 1187 | } |
duke@1 | 1188 | } |
duke@1 | 1189 | |
duke@1 | 1190 | return ret; |
duke@1 | 1191 | } |
duke@1 | 1192 | |
duke@1 | 1193 | public boolean writeZipIndex() { |
duke@1 | 1194 | lock.lock(); |
duke@1 | 1195 | try { |
duke@1 | 1196 | return writeIndex(); |
duke@1 | 1197 | } |
duke@1 | 1198 | finally { |
duke@1 | 1199 | lock.unlock(); |
duke@1 | 1200 | } |
duke@1 | 1201 | } |
duke@1 | 1202 | |
duke@1 | 1203 | private File getIndexFile() { |
duke@1 | 1204 | if (zipIndexFile == null) { |
duke@1 | 1205 | if (zipFile == null) { |
duke@1 | 1206 | return null; |
duke@1 | 1207 | } |
duke@1 | 1208 | |
duke@1 | 1209 | zipIndexFile = new File((preindexedCacheLocation == null ? "" : preindexedCacheLocation) + |
duke@1 | 1210 | zipFile.getName() + ".index"); |
duke@1 | 1211 | } |
duke@1 | 1212 | |
duke@1 | 1213 | return zipIndexFile; |
duke@1 | 1214 | } |
duke@1 | 1215 | |
duke@1 | 1216 | public File getZipFile() { |
duke@1 | 1217 | return zipFile; |
duke@1 | 1218 | } |
jjg@57 | 1219 | |
jjg@424 | 1220 | File getAbsoluteFile() { |
jjg@424 | 1221 | File absFile = (absFileRef == null ? null : absFileRef.get()); |
jjg@424 | 1222 | if (absFile == null) { |
jjg@424 | 1223 | absFile = zipFile.getAbsoluteFile(); |
jjg@424 | 1224 | absFileRef = new SoftReference<File>(absFile); |
jjg@424 | 1225 | } |
jjg@424 | 1226 | return absFile; |
jjg@424 | 1227 | } |
jjg@424 | 1228 | |
jjg@103 | 1229 | private RelativeDirectory getRelativeDirectory(String path) { |
jjg@103 | 1230 | RelativeDirectory rd; |
jjg@103 | 1231 | SoftReference<RelativeDirectory> ref = relativeDirectoryCache.get(path); |
jjg@103 | 1232 | if (ref != null) { |
jjg@103 | 1233 | rd = ref.get(); |
jjg@103 | 1234 | if (rd != null) |
jjg@103 | 1235 | return rd; |
jjg@103 | 1236 | } |
jjg@103 | 1237 | rd = new RelativeDirectory(path); |
jjg@103 | 1238 | relativeDirectoryCache.put(path, new SoftReference<RelativeDirectory>(rd)); |
jjg@103 | 1239 | return rd; |
jjg@103 | 1240 | } |
jjg@57 | 1241 | |
jjg@57 | 1242 | static class Entry implements Comparable<Entry> { |
jjg@57 | 1243 | public static final Entry[] EMPTY_ARRAY = {}; |
jjg@57 | 1244 | |
jjg@57 | 1245 | // Directory related |
jjg@103 | 1246 | RelativeDirectory dir; |
jjg@57 | 1247 | boolean isDir; |
jjg@57 | 1248 | |
jjg@57 | 1249 | // File related |
jjg@57 | 1250 | String name; |
jjg@57 | 1251 | |
jjg@57 | 1252 | int offset; |
jjg@57 | 1253 | int size; |
jjg@57 | 1254 | int compressedSize; |
jjg@57 | 1255 | long javatime; |
jjg@57 | 1256 | |
jjg@57 | 1257 | private int nativetime; |
jjg@57 | 1258 | |
jjg@103 | 1259 | public Entry(RelativePath path) { |
jjg@103 | 1260 | this(path.dirname(), path.basename()); |
jjg@57 | 1261 | } |
jjg@57 | 1262 | |
jjg@103 | 1263 | public Entry(RelativeDirectory directory, String name) { |
jjg@103 | 1264 | this.dir = directory; |
jjg@57 | 1265 | this.name = name; |
jjg@57 | 1266 | } |
jjg@57 | 1267 | |
jjg@57 | 1268 | public String getName() { |
jjg@103 | 1269 | return new RelativeFile(dir, name).getPath(); |
jjg@57 | 1270 | } |
jjg@57 | 1271 | |
jjg@57 | 1272 | public String getFileName() { |
jjg@57 | 1273 | return name; |
jjg@57 | 1274 | } |
jjg@57 | 1275 | |
jjg@57 | 1276 | public long getLastModified() { |
jjg@57 | 1277 | if (javatime == 0) { |
jjg@57 | 1278 | javatime = dosToJavaTime(nativetime); |
jjg@57 | 1279 | } |
jjg@57 | 1280 | return javatime; |
jjg@57 | 1281 | } |
jjg@57 | 1282 | |
jjg@71 | 1283 | // based on dosToJavaTime in java.util.Zip, but avoiding the |
jjg@71 | 1284 | // use of deprecated Date constructor |
jjg@71 | 1285 | private static long dosToJavaTime(int dtime) { |
jjg@71 | 1286 | Calendar c = Calendar.getInstance(); |
jjg@71 | 1287 | c.set(Calendar.YEAR, ((dtime >> 25) & 0x7f) + 1980); |
jjg@71 | 1288 | c.set(Calendar.MONTH, ((dtime >> 21) & 0x0f) - 1); |
jjg@71 | 1289 | c.set(Calendar.DATE, ((dtime >> 16) & 0x1f)); |
jjg@71 | 1290 | c.set(Calendar.HOUR_OF_DAY, ((dtime >> 11) & 0x1f)); |
jjg@71 | 1291 | c.set(Calendar.MINUTE, ((dtime >> 5) & 0x3f)); |
jjg@71 | 1292 | c.set(Calendar.SECOND, ((dtime << 1) & 0x3e)); |
jjg@71 | 1293 | c.set(Calendar.MILLISECOND, 0); |
jjg@71 | 1294 | return c.getTimeInMillis(); |
jjg@57 | 1295 | } |
jjg@57 | 1296 | |
jjg@57 | 1297 | void setNativeTime(int natTime) { |
jjg@57 | 1298 | nativetime = natTime; |
jjg@57 | 1299 | } |
jjg@57 | 1300 | |
jjg@57 | 1301 | public boolean isDirectory() { |
jjg@57 | 1302 | return isDir; |
jjg@57 | 1303 | } |
jjg@57 | 1304 | |
jjg@57 | 1305 | public int compareTo(Entry other) { |
jjg@103 | 1306 | RelativeDirectory otherD = other.dir; |
jjg@57 | 1307 | if (dir != otherD) { |
jjg@57 | 1308 | int c = dir.compareTo(otherD); |
jjg@57 | 1309 | if (c != 0) |
jjg@57 | 1310 | return c; |
jjg@57 | 1311 | } |
jjg@57 | 1312 | return name.compareTo(other.name); |
jjg@57 | 1313 | } |
jjg@57 | 1314 | |
jjg@103 | 1315 | @Override |
jjg@103 | 1316 | public boolean equals(Object o) { |
jjg@103 | 1317 | if (!(o instanceof Entry)) |
jjg@103 | 1318 | return false; |
jjg@103 | 1319 | Entry other = (Entry) o; |
jjg@103 | 1320 | return dir.equals(other.dir) && name.equals(other.name); |
jjg@103 | 1321 | } |
jjg@103 | 1322 | |
jjg@103 | 1323 | @Override |
jjg@103 | 1324 | public int hashCode() { |
jjg@103 | 1325 | int hash = 7; |
jjg@103 | 1326 | hash = 97 * hash + (this.dir != null ? this.dir.hashCode() : 0); |
jjg@103 | 1327 | hash = 97 * hash + (this.name != null ? this.name.hashCode() : 0); |
jjg@103 | 1328 | return hash; |
jjg@103 | 1329 | } |
jjg@103 | 1330 | |
jjg@57 | 1331 | |
jjg@57 | 1332 | public String toString() { |
jjg@57 | 1333 | return isDir ? ("Dir:" + dir + " : " + name) : |
jjg@57 | 1334 | (dir + ":" + name); |
jjg@57 | 1335 | } |
jjg@57 | 1336 | } |
jjg@57 | 1337 | |
duke@1 | 1338 | } |