Mon, 27 Jul 2009 19:52:42 -0700
6865399: some javac files are missing Sun internal API comment
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@103 | 33 | import java.lang.ref.SoftReference; |
jjg@50 | 34 | import java.util.ArrayList; |
jjg@50 | 35 | import java.util.Arrays; |
jjg@71 | 36 | import java.util.Calendar; |
jjg@50 | 37 | import java.util.Collections; |
jjg@50 | 38 | import java.util.HashMap; |
jjg@50 | 39 | import java.util.HashSet; |
jjg@50 | 40 | import java.util.Iterator; |
duke@1 | 41 | import java.util.List; |
jjg@50 | 42 | import java.util.Map; |
jjg@50 | 43 | import java.util.Set; |
duke@1 | 44 | import java.util.concurrent.locks.ReentrantLock; |
jjg@50 | 45 | import java.util.zip.DataFormatException; |
jjg@50 | 46 | import java.util.zip.Inflater; |
jjg@50 | 47 | import java.util.zip.ZipException; |
duke@1 | 48 | |
jjg@103 | 49 | import com.sun.tools.javac.file.RelativePath.RelativeDirectory; |
jjg@103 | 50 | import com.sun.tools.javac.file.RelativePath.RelativeFile; |
jjg@103 | 51 | |
duke@1 | 52 | /** This class implements building of index of a zip archive and access to it's context. |
duke@1 | 53 | * It also uses prebuild index if available. It supports invocations where it will |
duke@1 | 54 | * serialize an optimized zip index file to disk. |
duke@1 | 55 | * |
duke@1 | 56 | * In oreder to use secondary index file make sure the option "usezipindex" is in the Options object, |
duke@1 | 57 | * when JavacFileManager is invoked. (You can pass "-XDusezipindex" on the command line. |
duke@1 | 58 | * |
duke@1 | 59 | * Location where to look for/generate optimized zip index files can be provided using |
duke@1 | 60 | * "-XDcachezipindexdir=<directory>". If this flag is not provided, the dfault location is |
duke@1 | 61 | * the value of the "java.io.tmpdir" system property. |
duke@1 | 62 | * |
duke@1 | 63 | * If key "-XDwritezipindexfiles" is specified, there will be new optimized index file |
duke@1 | 64 | * created for each archive, used by the compiler for compilation, at location, |
duke@1 | 65 | * specified by "cachezipindexdir" option. |
duke@1 | 66 | * |
duke@1 | 67 | * If nonBatchMode option is specified (-XDnonBatchMode) the compiler will use timestamp |
duke@1 | 68 | * checking to reindex the zip files if it is needed. In batch mode the timestamps are not checked |
duke@1 | 69 | * and the compiler uses the cached indexes. |
jjg@333 | 70 | * |
jjg@333 | 71 | * <p><b>This is NOT part of any API supported by Sun Microsystems. |
jjg@333 | 72 | * If you write code that depends on this, you do so at your own risk. |
jjg@333 | 73 | * This code and its internal interfaces are subject to change or |
jjg@333 | 74 | * deletion without notice.</b> |
duke@1 | 75 | */ |
duke@1 | 76 | public class ZipFileIndex { |
duke@1 | 77 | private static final String MIN_CHAR = String.valueOf(Character.MIN_VALUE); |
duke@1 | 78 | private static final String MAX_CHAR = String.valueOf(Character.MAX_VALUE); |
duke@1 | 79 | |
duke@1 | 80 | public final static long NOT_MODIFIED = Long.MIN_VALUE; |
duke@1 | 81 | |
duke@1 | 82 | private static Map<File, ZipFileIndex> zipFileIndexCache = new HashMap<File, ZipFileIndex>(); |
duke@1 | 83 | private static ReentrantLock lock = new ReentrantLock(); |
duke@1 | 84 | |
duke@1 | 85 | private static boolean NON_BATCH_MODE = System.getProperty("nonBatchMode") != null;// TODO: Use -XD compiler switch for this. |
duke@1 | 86 | |
jjg@103 | 87 | private Map<RelativeDirectory, DirectoryEntry> directories = Collections.<RelativeDirectory, DirectoryEntry>emptyMap(); |
jjg@103 | 88 | private Set<RelativeDirectory> allDirs = Collections.<RelativeDirectory>emptySet(); |
duke@1 | 89 | |
duke@1 | 90 | // ZipFileIndex data entries |
duke@1 | 91 | private File zipFile; |
duke@1 | 92 | private long zipFileLastModified = NOT_MODIFIED; |
duke@1 | 93 | private RandomAccessFile zipRandomFile; |
jjg@57 | 94 | private Entry[] entries; |
duke@1 | 95 | |
duke@1 | 96 | private boolean readFromIndex = false; |
duke@1 | 97 | private File zipIndexFile = null; |
duke@1 | 98 | private boolean triedToReadIndex = false; |
jjg@103 | 99 | final RelativeDirectory symbolFilePrefix; |
duke@1 | 100 | private int symbolFilePrefixLength = 0; |
duke@1 | 101 | private boolean hasPopulatedData = false; |
duke@1 | 102 | private long lastReferenceTimeStamp = NOT_MODIFIED; |
duke@1 | 103 | |
duke@1 | 104 | private boolean usePreindexedCache = false; |
duke@1 | 105 | private String preindexedCacheLocation = null; |
duke@1 | 106 | |
duke@1 | 107 | private boolean writeIndex = false; |
duke@1 | 108 | |
jjg@103 | 109 | private Map <String, SoftReference<RelativeDirectory>> relativeDirectoryCache = |
jjg@103 | 110 | new HashMap<String, SoftReference<RelativeDirectory>>(); |
jjg@103 | 111 | |
duke@1 | 112 | /** |
duke@1 | 113 | * Returns a list of all ZipFileIndex entries |
duke@1 | 114 | * |
duke@1 | 115 | * @return A list of ZipFileIndex entries, or an empty list |
duke@1 | 116 | */ |
duke@1 | 117 | public static List<ZipFileIndex> getZipFileIndexes() { |
duke@1 | 118 | return getZipFileIndexes(false); |
duke@1 | 119 | } |
duke@1 | 120 | |
duke@1 | 121 | /** |
duke@1 | 122 | * Returns a list of all ZipFileIndex entries |
duke@1 | 123 | * |
duke@1 | 124 | * @param openedOnly If true it returns a list of only opened ZipFileIndex entries, otherwise |
duke@1 | 125 | * all ZipFileEntry(s) are included into the list. |
duke@1 | 126 | * @return A list of ZipFileIndex entries, or an empty list |
duke@1 | 127 | */ |
duke@1 | 128 | public static List<ZipFileIndex> getZipFileIndexes(boolean openedOnly) { |
duke@1 | 129 | List<ZipFileIndex> zipFileIndexes = new ArrayList<ZipFileIndex>(); |
duke@1 | 130 | lock.lock(); |
duke@1 | 131 | try { |
duke@1 | 132 | zipFileIndexes.addAll(zipFileIndexCache.values()); |
duke@1 | 133 | |
duke@1 | 134 | if (openedOnly) { |
duke@1 | 135 | for(ZipFileIndex elem : zipFileIndexes) { |
duke@1 | 136 | if (!elem.isOpen()) { |
duke@1 | 137 | zipFileIndexes.remove(elem); |
duke@1 | 138 | } |
duke@1 | 139 | } |
duke@1 | 140 | } |
duke@1 | 141 | } |
duke@1 | 142 | finally { |
duke@1 | 143 | lock.unlock(); |
duke@1 | 144 | } |
duke@1 | 145 | return zipFileIndexes; |
duke@1 | 146 | } |
duke@1 | 147 | |
duke@1 | 148 | public boolean isOpen() { |
duke@1 | 149 | lock.lock(); |
duke@1 | 150 | try { |
duke@1 | 151 | return zipRandomFile != null; |
duke@1 | 152 | } |
duke@1 | 153 | finally { |
duke@1 | 154 | lock.unlock(); |
duke@1 | 155 | } |
duke@1 | 156 | } |
duke@1 | 157 | |
jjg@103 | 158 | public static ZipFileIndex getZipFileIndex(File zipFile, |
jjg@103 | 159 | RelativeDirectory symbolFilePrefix, |
jjg@103 | 160 | boolean useCache, String cacheLocation, |
jjg@103 | 161 | boolean writeIndex) throws IOException { |
duke@1 | 162 | ZipFileIndex zi = null; |
duke@1 | 163 | lock.lock(); |
duke@1 | 164 | try { |
duke@1 | 165 | zi = getExistingZipIndex(zipFile); |
duke@1 | 166 | |
duke@1 | 167 | if (zi == null || (zi != null && zipFile.lastModified() != zi.zipFileLastModified)) { |
jjg@57 | 168 | zi = new ZipFileIndex(zipFile, symbolFilePrefix, writeIndex, |
duke@1 | 169 | useCache, cacheLocation); |
duke@1 | 170 | zipFileIndexCache.put(zipFile, zi); |
duke@1 | 171 | } |
duke@1 | 172 | } |
duke@1 | 173 | finally { |
duke@1 | 174 | lock.unlock(); |
duke@1 | 175 | } |
duke@1 | 176 | return zi; |
duke@1 | 177 | } |
duke@1 | 178 | |
duke@1 | 179 | public static ZipFileIndex getExistingZipIndex(File zipFile) { |
duke@1 | 180 | lock.lock(); |
duke@1 | 181 | try { |
duke@1 | 182 | return zipFileIndexCache.get(zipFile); |
duke@1 | 183 | } |
duke@1 | 184 | finally { |
duke@1 | 185 | lock.unlock(); |
duke@1 | 186 | } |
duke@1 | 187 | } |
duke@1 | 188 | |
duke@1 | 189 | public static void clearCache() { |
duke@1 | 190 | lock.lock(); |
duke@1 | 191 | try { |
duke@1 | 192 | zipFileIndexCache.clear(); |
duke@1 | 193 | } |
duke@1 | 194 | finally { |
duke@1 | 195 | lock.unlock(); |
duke@1 | 196 | } |
duke@1 | 197 | } |
duke@1 | 198 | |
duke@1 | 199 | public static void clearCache(long timeNotUsed) { |
duke@1 | 200 | lock.lock(); |
duke@1 | 201 | try { |
duke@1 | 202 | Iterator<File> cachedFileIterator = zipFileIndexCache.keySet().iterator(); |
duke@1 | 203 | while (cachedFileIterator.hasNext()) { |
duke@1 | 204 | File cachedFile = cachedFileIterator.next(); |
duke@1 | 205 | ZipFileIndex cachedZipIndex = zipFileIndexCache.get(cachedFile); |
duke@1 | 206 | if (cachedZipIndex != null) { |
duke@1 | 207 | long timeToTest = cachedZipIndex.lastReferenceTimeStamp + timeNotUsed; |
duke@1 | 208 | if (timeToTest < cachedZipIndex.lastReferenceTimeStamp || // Overflow... |
duke@1 | 209 | System.currentTimeMillis() > timeToTest) { |
duke@1 | 210 | zipFileIndexCache.remove(cachedFile); |
duke@1 | 211 | } |
duke@1 | 212 | } |
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 | public static void removeFromCache(File file) { |
duke@1 | 221 | lock.lock(); |
duke@1 | 222 | try { |
duke@1 | 223 | zipFileIndexCache.remove(file); |
duke@1 | 224 | } |
duke@1 | 225 | finally { |
duke@1 | 226 | lock.unlock(); |
duke@1 | 227 | } |
duke@1 | 228 | } |
duke@1 | 229 | |
duke@1 | 230 | /** Sets already opened list of ZipFileIndexes from an outside client |
duke@1 | 231 | * of the compiler. This functionality should be used in a non-batch clients of the compiler. |
duke@1 | 232 | */ |
duke@1 | 233 | public static void setOpenedIndexes(List<ZipFileIndex>indexes) throws IllegalStateException { |
duke@1 | 234 | lock.lock(); |
duke@1 | 235 | try { |
duke@1 | 236 | if (zipFileIndexCache.isEmpty()) { |
duke@1 | 237 | throw new IllegalStateException("Setting opened indexes should be called only when the ZipFileCache is empty. Call JavacFileManager.flush() before calling this method."); |
duke@1 | 238 | } |
duke@1 | 239 | |
duke@1 | 240 | for (ZipFileIndex zfi : indexes) { |
duke@1 | 241 | zipFileIndexCache.put(zfi.zipFile, zfi); |
duke@1 | 242 | } |
duke@1 | 243 | } |
duke@1 | 244 | finally { |
duke@1 | 245 | lock.unlock(); |
duke@1 | 246 | } |
duke@1 | 247 | } |
duke@1 | 248 | |
jjg@103 | 249 | private ZipFileIndex(File zipFile, RelativeDirectory symbolFilePrefix, boolean writeIndex, |
duke@1 | 250 | boolean useCache, String cacheLocation) throws IOException { |
duke@1 | 251 | this.zipFile = zipFile; |
jjg@57 | 252 | this.symbolFilePrefix = symbolFilePrefix; |
jjg@57 | 253 | this.symbolFilePrefixLength = (symbolFilePrefix == null ? 0 : |
jjg@103 | 254 | symbolFilePrefix.getPath().getBytes("UTF-8").length); |
duke@1 | 255 | this.writeIndex = writeIndex; |
duke@1 | 256 | this.usePreindexedCache = useCache; |
duke@1 | 257 | this.preindexedCacheLocation = cacheLocation; |
duke@1 | 258 | |
duke@1 | 259 | if (zipFile != null) { |
duke@1 | 260 | this.zipFileLastModified = zipFile.lastModified(); |
duke@1 | 261 | } |
duke@1 | 262 | |
duke@1 | 263 | // Validate integrity of the zip file |
duke@1 | 264 | checkIndex(); |
duke@1 | 265 | } |
duke@1 | 266 | |
duke@1 | 267 | public String toString() { |
jjg@103 | 268 | return "ZipFileIndex[" + zipFile + "]"; |
duke@1 | 269 | } |
duke@1 | 270 | |
duke@1 | 271 | // Just in case... |
duke@1 | 272 | protected void finalize() { |
duke@1 | 273 | closeFile(); |
duke@1 | 274 | } |
duke@1 | 275 | |
duke@1 | 276 | private boolean isUpToDate() { |
duke@1 | 277 | if (zipFile != null && |
duke@1 | 278 | ((!NON_BATCH_MODE) || zipFileLastModified == zipFile.lastModified()) && |
duke@1 | 279 | hasPopulatedData) { |
duke@1 | 280 | return true; |
duke@1 | 281 | } |
duke@1 | 282 | |
duke@1 | 283 | return false; |
duke@1 | 284 | } |
duke@1 | 285 | |
duke@1 | 286 | /** |
duke@1 | 287 | * Here we need to make sure that the ZipFileIndex is valid. Check the timestamp of the file and |
duke@1 | 288 | * if its the same as the one at the time the index was build we don't need to reopen anything. |
duke@1 | 289 | */ |
duke@1 | 290 | private void checkIndex() throws IOException { |
duke@1 | 291 | boolean isUpToDate = true; |
duke@1 | 292 | if (!isUpToDate()) { |
duke@1 | 293 | closeFile(); |
duke@1 | 294 | isUpToDate = false; |
duke@1 | 295 | } |
duke@1 | 296 | |
duke@1 | 297 | if (zipRandomFile != null || isUpToDate) { |
duke@1 | 298 | lastReferenceTimeStamp = System.currentTimeMillis(); |
duke@1 | 299 | return; |
duke@1 | 300 | } |
duke@1 | 301 | |
duke@1 | 302 | hasPopulatedData = true; |
duke@1 | 303 | |
duke@1 | 304 | if (readIndex()) { |
duke@1 | 305 | lastReferenceTimeStamp = System.currentTimeMillis(); |
duke@1 | 306 | return; |
duke@1 | 307 | } |
duke@1 | 308 | |
jjg@103 | 309 | directories = Collections.<RelativeDirectory, DirectoryEntry>emptyMap(); |
jjg@103 | 310 | allDirs = Collections.<RelativeDirectory>emptySet(); |
duke@1 | 311 | |
duke@1 | 312 | try { |
duke@1 | 313 | openFile(); |
duke@1 | 314 | long totalLength = zipRandomFile.length(); |
duke@1 | 315 | ZipDirectory directory = new ZipDirectory(zipRandomFile, 0L, totalLength, this); |
duke@1 | 316 | directory.buildIndex(); |
duke@1 | 317 | } finally { |
duke@1 | 318 | if (zipRandomFile != null) { |
duke@1 | 319 | closeFile(); |
duke@1 | 320 | } |
duke@1 | 321 | } |
duke@1 | 322 | |
duke@1 | 323 | lastReferenceTimeStamp = System.currentTimeMillis(); |
duke@1 | 324 | } |
duke@1 | 325 | |
duke@1 | 326 | private void openFile() throws FileNotFoundException { |
duke@1 | 327 | if (zipRandomFile == null && zipFile != null) { |
duke@1 | 328 | zipRandomFile = new RandomAccessFile(zipFile, "r"); |
duke@1 | 329 | } |
duke@1 | 330 | } |
duke@1 | 331 | |
duke@1 | 332 | private void cleanupState() { |
duke@1 | 333 | // Make sure there is a valid but empty index if the file doesn't exist |
jjg@57 | 334 | entries = Entry.EMPTY_ARRAY; |
jjg@103 | 335 | directories = Collections.<RelativeDirectory, DirectoryEntry>emptyMap(); |
duke@1 | 336 | zipFileLastModified = NOT_MODIFIED; |
jjg@103 | 337 | allDirs = Collections.<RelativeDirectory>emptySet(); |
duke@1 | 338 | } |
duke@1 | 339 | |
duke@1 | 340 | public void close() { |
duke@1 | 341 | lock.lock(); |
duke@1 | 342 | try { |
duke@1 | 343 | writeIndex(); |
duke@1 | 344 | closeFile(); |
duke@1 | 345 | } |
duke@1 | 346 | finally { |
duke@1 | 347 | lock.unlock(); |
duke@1 | 348 | } |
duke@1 | 349 | } |
duke@1 | 350 | |
duke@1 | 351 | private void closeFile() { |
duke@1 | 352 | if (zipRandomFile != null) { |
duke@1 | 353 | try { |
duke@1 | 354 | zipRandomFile.close(); |
duke@1 | 355 | } catch (IOException ex) { |
duke@1 | 356 | } |
duke@1 | 357 | zipRandomFile = null; |
duke@1 | 358 | } |
duke@1 | 359 | } |
duke@1 | 360 | |
duke@1 | 361 | /** |
duke@1 | 362 | * Returns the ZipFileIndexEntry for an absolute path, if there is one. |
duke@1 | 363 | */ |
jjg@103 | 364 | Entry getZipIndexEntry(RelativePath path) { |
duke@1 | 365 | lock.lock(); |
duke@1 | 366 | try { |
duke@1 | 367 | checkIndex(); |
jjg@103 | 368 | DirectoryEntry de = directories.get(path.dirname()); |
jjg@103 | 369 | String lookFor = path.basename(); |
duke@1 | 370 | return de == null ? null : de.getEntry(lookFor); |
duke@1 | 371 | } |
duke@1 | 372 | catch (IOException e) { |
duke@1 | 373 | return null; |
duke@1 | 374 | } |
duke@1 | 375 | finally { |
duke@1 | 376 | lock.unlock(); |
duke@1 | 377 | } |
duke@1 | 378 | } |
duke@1 | 379 | |
duke@1 | 380 | /** |
duke@1 | 381 | * Returns a javac List of filenames within an absolute path in the ZipFileIndex. |
duke@1 | 382 | */ |
jjg@103 | 383 | public com.sun.tools.javac.util.List<String> getFiles(RelativeDirectory path) { |
duke@1 | 384 | lock.lock(); |
duke@1 | 385 | try { |
duke@1 | 386 | checkIndex(); |
duke@1 | 387 | |
duke@1 | 388 | DirectoryEntry de = directories.get(path); |
duke@1 | 389 | com.sun.tools.javac.util.List<String> ret = de == null ? null : de.getFiles(); |
duke@1 | 390 | |
duke@1 | 391 | if (ret == null) { |
duke@1 | 392 | return com.sun.tools.javac.util.List.<String>nil(); |
duke@1 | 393 | } |
duke@1 | 394 | return ret; |
duke@1 | 395 | } |
duke@1 | 396 | catch (IOException e) { |
duke@1 | 397 | return com.sun.tools.javac.util.List.<String>nil(); |
duke@1 | 398 | } |
duke@1 | 399 | finally { |
duke@1 | 400 | lock.unlock(); |
duke@1 | 401 | } |
duke@1 | 402 | } |
duke@1 | 403 | |
jjg@103 | 404 | public List<String> getDirectories(RelativeDirectory path) { |
duke@1 | 405 | lock.lock(); |
duke@1 | 406 | try { |
duke@1 | 407 | checkIndex(); |
duke@1 | 408 | |
duke@1 | 409 | DirectoryEntry de = directories.get(path); |
duke@1 | 410 | com.sun.tools.javac.util.List<String> ret = de == null ? null : de.getDirectories(); |
duke@1 | 411 | |
duke@1 | 412 | if (ret == null) { |
duke@1 | 413 | return com.sun.tools.javac.util.List.<String>nil(); |
duke@1 | 414 | } |
duke@1 | 415 | |
duke@1 | 416 | return ret; |
duke@1 | 417 | } |
duke@1 | 418 | catch (IOException e) { |
duke@1 | 419 | return com.sun.tools.javac.util.List.<String>nil(); |
duke@1 | 420 | } |
duke@1 | 421 | finally { |
duke@1 | 422 | lock.unlock(); |
duke@1 | 423 | } |
duke@1 | 424 | } |
duke@1 | 425 | |
jjg@103 | 426 | public Set<RelativeDirectory> getAllDirectories() { |
duke@1 | 427 | lock.lock(); |
duke@1 | 428 | try { |
duke@1 | 429 | checkIndex(); |
duke@1 | 430 | if (allDirs == Collections.EMPTY_SET) { |
jjg@103 | 431 | allDirs = new HashSet<RelativeDirectory>(directories.keySet()); |
duke@1 | 432 | } |
duke@1 | 433 | |
duke@1 | 434 | return allDirs; |
duke@1 | 435 | } |
duke@1 | 436 | catch (IOException e) { |
jjg@103 | 437 | return Collections.<RelativeDirectory>emptySet(); |
duke@1 | 438 | } |
duke@1 | 439 | finally { |
duke@1 | 440 | lock.unlock(); |
duke@1 | 441 | } |
duke@1 | 442 | } |
duke@1 | 443 | |
duke@1 | 444 | /** |
duke@1 | 445 | * Tests if a specific path exists in the zip. This method will return true |
duke@1 | 446 | * for file entries and directories. |
duke@1 | 447 | * |
duke@1 | 448 | * @param path A path within the zip. |
duke@1 | 449 | * @return True if the path is a file or dir, false otherwise. |
duke@1 | 450 | */ |
jjg@103 | 451 | public boolean contains(RelativePath path) { |
duke@1 | 452 | lock.lock(); |
duke@1 | 453 | try { |
duke@1 | 454 | checkIndex(); |
duke@1 | 455 | return getZipIndexEntry(path) != null; |
duke@1 | 456 | } |
duke@1 | 457 | catch (IOException e) { |
duke@1 | 458 | return false; |
duke@1 | 459 | } |
duke@1 | 460 | finally { |
duke@1 | 461 | lock.unlock(); |
duke@1 | 462 | } |
duke@1 | 463 | } |
duke@1 | 464 | |
jjg@103 | 465 | public boolean isDirectory(RelativePath path) throws IOException { |
duke@1 | 466 | lock.lock(); |
duke@1 | 467 | try { |
duke@1 | 468 | // The top level in a zip file is always a directory. |
jjg@103 | 469 | if (path.getPath().length() == 0) { |
duke@1 | 470 | lastReferenceTimeStamp = System.currentTimeMillis(); |
duke@1 | 471 | return true; |
duke@1 | 472 | } |
duke@1 | 473 | |
duke@1 | 474 | checkIndex(); |
duke@1 | 475 | return directories.get(path) != null; |
duke@1 | 476 | } |
duke@1 | 477 | finally { |
duke@1 | 478 | lock.unlock(); |
duke@1 | 479 | } |
duke@1 | 480 | } |
duke@1 | 481 | |
jjg@103 | 482 | public long getLastModified(RelativeFile path) throws IOException { |
duke@1 | 483 | lock.lock(); |
duke@1 | 484 | try { |
jjg@57 | 485 | Entry entry = getZipIndexEntry(path); |
duke@1 | 486 | if (entry == null) |
duke@1 | 487 | throw new FileNotFoundException(); |
duke@1 | 488 | return entry.getLastModified(); |
duke@1 | 489 | } |
duke@1 | 490 | finally { |
duke@1 | 491 | lock.unlock(); |
duke@1 | 492 | } |
duke@1 | 493 | } |
duke@1 | 494 | |
jjg@103 | 495 | public int length(RelativeFile path) throws IOException { |
duke@1 | 496 | lock.lock(); |
duke@1 | 497 | try { |
jjg@57 | 498 | Entry entry = getZipIndexEntry(path); |
duke@1 | 499 | if (entry == null) |
duke@1 | 500 | throw new FileNotFoundException(); |
duke@1 | 501 | |
duke@1 | 502 | if (entry.isDir) { |
duke@1 | 503 | return 0; |
duke@1 | 504 | } |
duke@1 | 505 | |
duke@1 | 506 | byte[] header = getHeader(entry); |
duke@1 | 507 | // entry is not compressed? |
duke@1 | 508 | if (get2ByteLittleEndian(header, 8) == 0) { |
duke@1 | 509 | return entry.compressedSize; |
duke@1 | 510 | } else { |
duke@1 | 511 | return entry.size; |
duke@1 | 512 | } |
duke@1 | 513 | } |
duke@1 | 514 | finally { |
duke@1 | 515 | lock.unlock(); |
duke@1 | 516 | } |
duke@1 | 517 | } |
duke@1 | 518 | |
jjg@103 | 519 | public byte[] read(RelativeFile path) throws IOException { |
duke@1 | 520 | lock.lock(); |
duke@1 | 521 | try { |
jjg@57 | 522 | Entry entry = getZipIndexEntry(path); |
duke@1 | 523 | if (entry == null) |
jjg@103 | 524 | throw new FileNotFoundException("Path not found in ZIP: " + path.path); |
duke@1 | 525 | return read(entry); |
duke@1 | 526 | } |
duke@1 | 527 | finally { |
duke@1 | 528 | lock.unlock(); |
duke@1 | 529 | } |
duke@1 | 530 | } |
duke@1 | 531 | |
jjg@57 | 532 | byte[] read(Entry entry) throws IOException { |
duke@1 | 533 | lock.lock(); |
duke@1 | 534 | try { |
duke@1 | 535 | openFile(); |
duke@1 | 536 | byte[] result = readBytes(entry); |
duke@1 | 537 | closeFile(); |
duke@1 | 538 | return result; |
duke@1 | 539 | } |
duke@1 | 540 | finally { |
duke@1 | 541 | lock.unlock(); |
duke@1 | 542 | } |
duke@1 | 543 | } |
duke@1 | 544 | |
jjg@103 | 545 | public int read(RelativeFile path, byte[] buffer) throws IOException { |
duke@1 | 546 | lock.lock(); |
duke@1 | 547 | try { |
jjg@57 | 548 | Entry entry = getZipIndexEntry(path); |
duke@1 | 549 | if (entry == null) |
duke@1 | 550 | throw new FileNotFoundException(); |
duke@1 | 551 | return read(entry, buffer); |
duke@1 | 552 | } |
duke@1 | 553 | finally { |
duke@1 | 554 | lock.unlock(); |
duke@1 | 555 | } |
duke@1 | 556 | } |
duke@1 | 557 | |
jjg@57 | 558 | int read(Entry entry, byte[] buffer) |
duke@1 | 559 | throws IOException { |
duke@1 | 560 | lock.lock(); |
duke@1 | 561 | try { |
duke@1 | 562 | int result = readBytes(entry, buffer); |
duke@1 | 563 | return result; |
duke@1 | 564 | } |
duke@1 | 565 | finally { |
duke@1 | 566 | lock.unlock(); |
duke@1 | 567 | } |
duke@1 | 568 | } |
duke@1 | 569 | |
jjg@57 | 570 | private byte[] readBytes(Entry entry) throws IOException { |
duke@1 | 571 | byte[] header = getHeader(entry); |
duke@1 | 572 | int csize = entry.compressedSize; |
duke@1 | 573 | byte[] cbuf = new byte[csize]; |
duke@1 | 574 | zipRandomFile.skipBytes(get2ByteLittleEndian(header, 26) + get2ByteLittleEndian(header, 28)); |
duke@1 | 575 | zipRandomFile.readFully(cbuf, 0, csize); |
duke@1 | 576 | |
duke@1 | 577 | // is this compressed - offset 8 in the ZipEntry header |
duke@1 | 578 | if (get2ByteLittleEndian(header, 8) == 0) |
duke@1 | 579 | return cbuf; |
duke@1 | 580 | |
duke@1 | 581 | int size = entry.size; |
duke@1 | 582 | byte[] buf = new byte[size]; |
duke@1 | 583 | if (inflate(cbuf, buf) != size) |
duke@1 | 584 | throw new ZipException("corrupted zip file"); |
duke@1 | 585 | |
duke@1 | 586 | return buf; |
duke@1 | 587 | } |
duke@1 | 588 | |
duke@1 | 589 | /** |
duke@1 | 590 | * |
duke@1 | 591 | */ |
jjg@57 | 592 | private int readBytes(Entry entry, byte[] buffer) throws IOException { |
duke@1 | 593 | byte[] header = getHeader(entry); |
duke@1 | 594 | |
duke@1 | 595 | // entry is not compressed? |
duke@1 | 596 | if (get2ByteLittleEndian(header, 8) == 0) { |
duke@1 | 597 | zipRandomFile.skipBytes(get2ByteLittleEndian(header, 26) + get2ByteLittleEndian(header, 28)); |
duke@1 | 598 | int offset = 0; |
duke@1 | 599 | int size = buffer.length; |
duke@1 | 600 | while (offset < size) { |
duke@1 | 601 | int count = zipRandomFile.read(buffer, offset, size - offset); |
duke@1 | 602 | if (count == -1) |
duke@1 | 603 | break; |
duke@1 | 604 | offset += count; |
duke@1 | 605 | } |
duke@1 | 606 | return entry.size; |
duke@1 | 607 | } |
duke@1 | 608 | |
duke@1 | 609 | int csize = entry.compressedSize; |
duke@1 | 610 | byte[] cbuf = new byte[csize]; |
duke@1 | 611 | zipRandomFile.skipBytes(get2ByteLittleEndian(header, 26) + get2ByteLittleEndian(header, 28)); |
duke@1 | 612 | zipRandomFile.readFully(cbuf, 0, csize); |
duke@1 | 613 | |
duke@1 | 614 | int count = inflate(cbuf, buffer); |
duke@1 | 615 | if (count == -1) |
duke@1 | 616 | throw new ZipException("corrupted zip file"); |
duke@1 | 617 | |
duke@1 | 618 | return entry.size; |
duke@1 | 619 | } |
duke@1 | 620 | |
duke@1 | 621 | //---------------------------------------------------------------------------- |
duke@1 | 622 | // Zip utilities |
duke@1 | 623 | //---------------------------------------------------------------------------- |
duke@1 | 624 | |
jjg@57 | 625 | private byte[] getHeader(Entry entry) throws IOException { |
duke@1 | 626 | zipRandomFile.seek(entry.offset); |
duke@1 | 627 | byte[] header = new byte[30]; |
duke@1 | 628 | zipRandomFile.readFully(header); |
duke@1 | 629 | if (get4ByteLittleEndian(header, 0) != 0x04034b50) |
duke@1 | 630 | throw new ZipException("corrupted zip file"); |
duke@1 | 631 | if ((get2ByteLittleEndian(header, 6) & 1) != 0) |
duke@1 | 632 | throw new ZipException("encrypted zip file"); // offset 6 in the header of the ZipFileEntry |
duke@1 | 633 | return header; |
duke@1 | 634 | } |
duke@1 | 635 | |
duke@1 | 636 | /* |
duke@1 | 637 | * Inflate using the java.util.zip.Inflater class |
duke@1 | 638 | */ |
duke@1 | 639 | private static Inflater inflater; |
duke@1 | 640 | private int inflate(byte[] src, byte[] dest) { |
duke@1 | 641 | |
duke@1 | 642 | // construct the inflater object or reuse an existing one |
duke@1 | 643 | if (inflater == null) |
duke@1 | 644 | inflater = new Inflater(true); |
duke@1 | 645 | |
duke@1 | 646 | synchronized (inflater) { |
duke@1 | 647 | inflater.reset(); |
duke@1 | 648 | inflater.setInput(src); |
duke@1 | 649 | try { |
duke@1 | 650 | return inflater.inflate(dest); |
duke@1 | 651 | } catch (DataFormatException ex) { |
duke@1 | 652 | return -1; |
duke@1 | 653 | } |
duke@1 | 654 | } |
duke@1 | 655 | } |
duke@1 | 656 | |
duke@1 | 657 | /** |
duke@1 | 658 | * return the two bytes buf[pos], buf[pos+1] as an unsigned integer in little |
duke@1 | 659 | * endian format. |
duke@1 | 660 | */ |
duke@1 | 661 | private static int get2ByteLittleEndian(byte[] buf, int pos) { |
duke@1 | 662 | return (buf[pos] & 0xFF) + ((buf[pos+1] & 0xFF) << 8); |
duke@1 | 663 | } |
duke@1 | 664 | |
duke@1 | 665 | /** |
duke@1 | 666 | * return the 4 bytes buf[i..i+3] as an integer in little endian format. |
duke@1 | 667 | */ |
duke@1 | 668 | private static int get4ByteLittleEndian(byte[] buf, int pos) { |
duke@1 | 669 | return (buf[pos] & 0xFF) + ((buf[pos + 1] & 0xFF) << 8) + |
duke@1 | 670 | ((buf[pos + 2] & 0xFF) << 16) + ((buf[pos + 3] & 0xFF) << 24); |
duke@1 | 671 | } |
duke@1 | 672 | |
duke@1 | 673 | /* ---------------------------------------------------------------------------- |
duke@1 | 674 | * ZipDirectory |
duke@1 | 675 | * ----------------------------------------------------------------------------*/ |
duke@1 | 676 | |
duke@1 | 677 | private class ZipDirectory { |
jjg@103 | 678 | private RelativeDirectory lastDir; |
duke@1 | 679 | private int lastStart; |
duke@1 | 680 | private int lastLen; |
duke@1 | 681 | |
duke@1 | 682 | byte[] zipDir; |
duke@1 | 683 | RandomAccessFile zipRandomFile = null; |
duke@1 | 684 | ZipFileIndex zipFileIndex = null; |
duke@1 | 685 | |
duke@1 | 686 | public ZipDirectory(RandomAccessFile zipRandomFile, long start, long end, ZipFileIndex index) throws IOException { |
duke@1 | 687 | this.zipRandomFile = zipRandomFile; |
duke@1 | 688 | this.zipFileIndex = index; |
duke@1 | 689 | |
duke@1 | 690 | findCENRecord(start, end); |
duke@1 | 691 | } |
duke@1 | 692 | |
duke@1 | 693 | /* |
duke@1 | 694 | * Reads zip file central directory. |
duke@1 | 695 | * For more details see readCEN in zip_util.c from the JDK sources. |
duke@1 | 696 | * This is a Java port of that function. |
duke@1 | 697 | */ |
duke@1 | 698 | private void findCENRecord(long start, long end) throws IOException { |
duke@1 | 699 | long totalLength = end - start; |
duke@1 | 700 | int endbuflen = 1024; |
duke@1 | 701 | byte[] endbuf = new byte[endbuflen]; |
duke@1 | 702 | long endbufend = end - start; |
duke@1 | 703 | |
duke@1 | 704 | // There is a variable-length field after the dir offset record. We need to do consequential search. |
duke@1 | 705 | while (endbufend >= 22) { |
duke@1 | 706 | if (endbufend < endbuflen) |
duke@1 | 707 | endbuflen = (int)endbufend; |
duke@1 | 708 | long endbufpos = endbufend - endbuflen; |
duke@1 | 709 | zipRandomFile.seek(start + endbufpos); |
duke@1 | 710 | zipRandomFile.readFully(endbuf, 0, endbuflen); |
duke@1 | 711 | int i = endbuflen - 22; |
duke@1 | 712 | while (i >= 0 && |
duke@1 | 713 | !(endbuf[i] == 0x50 && |
duke@1 | 714 | endbuf[i + 1] == 0x4b && |
duke@1 | 715 | endbuf[i + 2] == 0x05 && |
duke@1 | 716 | endbuf[i + 3] == 0x06 && |
duke@1 | 717 | endbufpos + i + 22 + |
duke@1 | 718 | get2ByteLittleEndian(endbuf, i + 20) == totalLength)) { |
duke@1 | 719 | i--; |
duke@1 | 720 | } |
duke@1 | 721 | |
duke@1 | 722 | if (i >= 0) { |
duke@1 | 723 | zipDir = new byte[get4ByteLittleEndian(endbuf, i + 12) + 2]; |
duke@1 | 724 | zipDir[0] = endbuf[i + 10]; |
duke@1 | 725 | zipDir[1] = endbuf[i + 11]; |
duke@1 | 726 | zipRandomFile.seek(start + get4ByteLittleEndian(endbuf, i + 16)); |
duke@1 | 727 | zipRandomFile.readFully(zipDir, 2, zipDir.length - 2); |
duke@1 | 728 | return; |
duke@1 | 729 | } else { |
duke@1 | 730 | endbufend = endbufpos + 21; |
duke@1 | 731 | } |
duke@1 | 732 | } |
duke@1 | 733 | throw new ZipException("cannot read zip file"); |
duke@1 | 734 | } |
jjg@103 | 735 | |
duke@1 | 736 | private void buildIndex() throws IOException { |
duke@1 | 737 | int entryCount = get2ByteLittleEndian(zipDir, 0); |
duke@1 | 738 | |
duke@1 | 739 | // Add each of the files |
duke@1 | 740 | if (entryCount > 0) { |
jjg@103 | 741 | directories = new HashMap<RelativeDirectory, DirectoryEntry>(); |
jjg@57 | 742 | ArrayList<Entry> entryList = new ArrayList<Entry>(); |
duke@1 | 743 | int pos = 2; |
duke@1 | 744 | for (int i = 0; i < entryCount; i++) { |
duke@1 | 745 | pos = readEntry(pos, entryList, directories); |
duke@1 | 746 | } |
duke@1 | 747 | |
duke@1 | 748 | // Add the accumulated dirs into the same list |
jjg@103 | 749 | for (RelativeDirectory d: directories.keySet()) { |
jjg@103 | 750 | // use shared RelativeDirectory objects for parent dirs |
jjg@103 | 751 | RelativeDirectory parent = getRelativeDirectory(d.dirname().getPath()); |
jjg@103 | 752 | String file = d.basename(); |
jjg@103 | 753 | Entry zipFileIndexEntry = new Entry(parent, file); |
duke@1 | 754 | zipFileIndexEntry.isDir = true; |
duke@1 | 755 | entryList.add(zipFileIndexEntry); |
duke@1 | 756 | } |
duke@1 | 757 | |
jjg@57 | 758 | entries = entryList.toArray(new Entry[entryList.size()]); |
duke@1 | 759 | Arrays.sort(entries); |
duke@1 | 760 | } else { |
duke@1 | 761 | cleanupState(); |
duke@1 | 762 | } |
duke@1 | 763 | } |
duke@1 | 764 | |
jjg@57 | 765 | private int readEntry(int pos, List<Entry> entryList, |
jjg@103 | 766 | Map<RelativeDirectory, DirectoryEntry> directories) throws IOException { |
duke@1 | 767 | if (get4ByteLittleEndian(zipDir, pos) != 0x02014b50) { |
duke@1 | 768 | throw new ZipException("cannot read zip file entry"); |
duke@1 | 769 | } |
duke@1 | 770 | |
duke@1 | 771 | int dirStart = pos + 46; |
duke@1 | 772 | int fileStart = dirStart; |
duke@1 | 773 | int fileEnd = fileStart + get2ByteLittleEndian(zipDir, pos + 28); |
duke@1 | 774 | |
duke@1 | 775 | if (zipFileIndex.symbolFilePrefixLength != 0 && |
duke@1 | 776 | ((fileEnd - fileStart) >= symbolFilePrefixLength)) { |
duke@1 | 777 | dirStart += zipFileIndex.symbolFilePrefixLength; |
duke@1 | 778 | fileStart += zipFileIndex.symbolFilePrefixLength; |
duke@1 | 779 | } |
jjg@103 | 780 | // Force any '\' to '/'. Keep the position of the last separator. |
duke@1 | 781 | for (int index = fileStart; index < fileEnd; index++) { |
duke@1 | 782 | byte nextByte = zipDir[index]; |
jjg@103 | 783 | if (nextByte == (byte)'\\') { |
jjg@103 | 784 | zipDir[index] = (byte)'/'; |
jjg@103 | 785 | fileStart = index + 1; |
jjg@103 | 786 | } else if (nextByte == (byte)'/') { |
duke@1 | 787 | fileStart = index + 1; |
duke@1 | 788 | } |
duke@1 | 789 | } |
duke@1 | 790 | |
jjg@103 | 791 | RelativeDirectory directory = null; |
duke@1 | 792 | if (fileStart == dirStart) |
jjg@103 | 793 | directory = getRelativeDirectory(""); |
duke@1 | 794 | else if (lastDir != null && lastLen == fileStart - dirStart - 1) { |
duke@1 | 795 | int index = lastLen - 1; |
duke@1 | 796 | while (zipDir[lastStart + index] == zipDir[dirStart + index]) { |
duke@1 | 797 | if (index == 0) { |
duke@1 | 798 | directory = lastDir; |
duke@1 | 799 | break; |
duke@1 | 800 | } |
duke@1 | 801 | index--; |
duke@1 | 802 | } |
duke@1 | 803 | } |
duke@1 | 804 | |
duke@1 | 805 | // Sub directories |
duke@1 | 806 | if (directory == null) { |
duke@1 | 807 | lastStart = dirStart; |
duke@1 | 808 | lastLen = fileStart - dirStart - 1; |
duke@1 | 809 | |
jjg@103 | 810 | directory = getRelativeDirectory(new String(zipDir, dirStart, lastLen, "UTF-8")); |
duke@1 | 811 | lastDir = directory; |
duke@1 | 812 | |
duke@1 | 813 | // Enter also all the parent directories |
jjg@103 | 814 | RelativeDirectory tempDirectory = directory; |
duke@1 | 815 | |
duke@1 | 816 | while (directories.get(tempDirectory) == null) { |
duke@1 | 817 | directories.put(tempDirectory, new DirectoryEntry(tempDirectory, zipFileIndex)); |
jjg@103 | 818 | if (tempDirectory.path.indexOf("/") == tempDirectory.path.length() - 1) |
duke@1 | 819 | break; |
jjg@103 | 820 | else { |
jjg@103 | 821 | // use shared RelativeDirectory objects for parent dirs |
jjg@103 | 822 | tempDirectory = getRelativeDirectory(tempDirectory.dirname().getPath()); |
jjg@103 | 823 | } |
duke@1 | 824 | } |
duke@1 | 825 | } |
duke@1 | 826 | else { |
duke@1 | 827 | if (directories.get(directory) == null) { |
duke@1 | 828 | directories.put(directory, new DirectoryEntry(directory, zipFileIndex)); |
duke@1 | 829 | } |
duke@1 | 830 | } |
duke@1 | 831 | |
duke@1 | 832 | // For each dir create also a file |
duke@1 | 833 | if (fileStart != fileEnd) { |
jjg@57 | 834 | Entry entry = new Entry(directory, |
duke@1 | 835 | new String(zipDir, fileStart, fileEnd - fileStart, "UTF-8")); |
duke@1 | 836 | |
duke@1 | 837 | entry.setNativeTime(get4ByteLittleEndian(zipDir, pos + 12)); |
duke@1 | 838 | entry.compressedSize = get4ByteLittleEndian(zipDir, pos + 20); |
duke@1 | 839 | entry.size = get4ByteLittleEndian(zipDir, pos + 24); |
duke@1 | 840 | entry.offset = get4ByteLittleEndian(zipDir, pos + 42); |
duke@1 | 841 | entryList.add(entry); |
duke@1 | 842 | } |
duke@1 | 843 | |
duke@1 | 844 | return pos + 46 + |
duke@1 | 845 | get2ByteLittleEndian(zipDir, pos + 28) + |
duke@1 | 846 | get2ByteLittleEndian(zipDir, pos + 30) + |
duke@1 | 847 | get2ByteLittleEndian(zipDir, pos + 32); |
duke@1 | 848 | } |
duke@1 | 849 | } |
duke@1 | 850 | |
duke@1 | 851 | /** |
duke@1 | 852 | * Returns the last modified timestamp of a zip file. |
duke@1 | 853 | * @return long |
duke@1 | 854 | */ |
duke@1 | 855 | public long getZipFileLastModified() throws IOException { |
duke@1 | 856 | lock.lock(); |
duke@1 | 857 | try { |
duke@1 | 858 | checkIndex(); |
duke@1 | 859 | return zipFileLastModified; |
duke@1 | 860 | } |
duke@1 | 861 | finally { |
duke@1 | 862 | lock.unlock(); |
duke@1 | 863 | } |
duke@1 | 864 | } |
duke@1 | 865 | |
duke@1 | 866 | /** ------------------------------------------------------------------------ |
duke@1 | 867 | * DirectoryEntry class |
duke@1 | 868 | * -------------------------------------------------------------------------*/ |
jjg@57 | 869 | |
duke@1 | 870 | static class DirectoryEntry { |
duke@1 | 871 | private boolean filesInited; |
duke@1 | 872 | private boolean directoriesInited; |
duke@1 | 873 | private boolean zipFileEntriesInited; |
duke@1 | 874 | private boolean entriesInited; |
duke@1 | 875 | |
duke@1 | 876 | private long writtenOffsetOffset = 0; |
duke@1 | 877 | |
jjg@103 | 878 | private RelativeDirectory dirName; |
duke@1 | 879 | |
duke@1 | 880 | private com.sun.tools.javac.util.List<String> zipFileEntriesFiles = com.sun.tools.javac.util.List.<String>nil(); |
duke@1 | 881 | private com.sun.tools.javac.util.List<String> zipFileEntriesDirectories = com.sun.tools.javac.util.List.<String>nil(); |
jjg@57 | 882 | private com.sun.tools.javac.util.List<Entry> zipFileEntries = com.sun.tools.javac.util.List.<Entry>nil(); |
duke@1 | 883 | |
jjg@57 | 884 | private List<Entry> entries = new ArrayList<Entry>(); |
duke@1 | 885 | |
duke@1 | 886 | private ZipFileIndex zipFileIndex; |
duke@1 | 887 | |
duke@1 | 888 | private int numEntries; |
duke@1 | 889 | |
jjg@103 | 890 | DirectoryEntry(RelativeDirectory dirName, ZipFileIndex index) { |
jjg@103 | 891 | filesInited = false; |
duke@1 | 892 | directoriesInited = false; |
duke@1 | 893 | entriesInited = false; |
duke@1 | 894 | |
jjg@103 | 895 | this.dirName = dirName; |
duke@1 | 896 | this.zipFileIndex = index; |
duke@1 | 897 | } |
duke@1 | 898 | |
duke@1 | 899 | private com.sun.tools.javac.util.List<String> getFiles() { |
jjg@103 | 900 | if (!filesInited) { |
jjg@103 | 901 | initEntries(); |
jjg@103 | 902 | for (Entry e : entries) { |
jjg@103 | 903 | if (!e.isDir) { |
jjg@103 | 904 | zipFileEntriesFiles = zipFileEntriesFiles.append(e.name); |
jjg@103 | 905 | } |
jjg@103 | 906 | } |
jjg@103 | 907 | filesInited = true; |
duke@1 | 908 | } |
duke@1 | 909 | return zipFileEntriesFiles; |
duke@1 | 910 | } |
duke@1 | 911 | |
duke@1 | 912 | private com.sun.tools.javac.util.List<String> getDirectories() { |
jjg@103 | 913 | if (!directoriesInited) { |
jjg@103 | 914 | initEntries(); |
jjg@103 | 915 | for (Entry e : entries) { |
jjg@103 | 916 | if (e.isDir) { |
jjg@103 | 917 | zipFileEntriesDirectories = zipFileEntriesDirectories.append(e.name); |
jjg@103 | 918 | } |
jjg@103 | 919 | } |
jjg@103 | 920 | directoriesInited = true; |
duke@1 | 921 | } |
duke@1 | 922 | return zipFileEntriesDirectories; |
duke@1 | 923 | } |
duke@1 | 924 | |
jjg@57 | 925 | private com.sun.tools.javac.util.List<Entry> getEntries() { |
jjg@103 | 926 | if (!zipFileEntriesInited) { |
jjg@103 | 927 | initEntries(); |
jjg@103 | 928 | zipFileEntries = com.sun.tools.javac.util.List.nil(); |
jjg@103 | 929 | for (Entry zfie : entries) { |
jjg@103 | 930 | zipFileEntries = zipFileEntries.append(zfie); |
jjg@103 | 931 | } |
jjg@103 | 932 | zipFileEntriesInited = true; |
duke@1 | 933 | } |
duke@1 | 934 | return zipFileEntries; |
duke@1 | 935 | } |
duke@1 | 936 | |
jjg@57 | 937 | private Entry getEntry(String rootName) { |
duke@1 | 938 | initEntries(); |
jjg@57 | 939 | int index = Collections.binarySearch(entries, new Entry(dirName, rootName)); |
duke@1 | 940 | if (index < 0) { |
duke@1 | 941 | return null; |
duke@1 | 942 | } |
duke@1 | 943 | |
duke@1 | 944 | return entries.get(index); |
duke@1 | 945 | } |
duke@1 | 946 | |
duke@1 | 947 | private void initEntries() { |
duke@1 | 948 | if (entriesInited) { |
duke@1 | 949 | return; |
duke@1 | 950 | } |
duke@1 | 951 | |
duke@1 | 952 | if (!zipFileIndex.readFromIndex) { |
duke@1 | 953 | int from = -Arrays.binarySearch(zipFileIndex.entries, |
jjg@57 | 954 | new Entry(dirName, ZipFileIndex.MIN_CHAR)) - 1; |
duke@1 | 955 | int to = -Arrays.binarySearch(zipFileIndex.entries, |
jjg@57 | 956 | new Entry(dirName, MAX_CHAR)) - 1; |
duke@1 | 957 | |
duke@1 | 958 | for (int i = from; i < to; i++) { |
duke@1 | 959 | entries.add(zipFileIndex.entries[i]); |
duke@1 | 960 | } |
duke@1 | 961 | } else { |
duke@1 | 962 | File indexFile = zipFileIndex.getIndexFile(); |
duke@1 | 963 | if (indexFile != null) { |
duke@1 | 964 | RandomAccessFile raf = null; |
duke@1 | 965 | try { |
duke@1 | 966 | raf = new RandomAccessFile(indexFile, "r"); |
duke@1 | 967 | raf.seek(writtenOffsetOffset); |
duke@1 | 968 | |
duke@1 | 969 | for (int nFiles = 0; nFiles < numEntries; nFiles++) { |
duke@1 | 970 | // Read the name bytes |
duke@1 | 971 | int zfieNameBytesLen = raf.readInt(); |
duke@1 | 972 | byte [] zfieNameBytes = new byte[zfieNameBytesLen]; |
duke@1 | 973 | raf.read(zfieNameBytes); |
duke@1 | 974 | String eName = new String(zfieNameBytes, "UTF-8"); |
duke@1 | 975 | |
duke@1 | 976 | // Read isDir |
duke@1 | 977 | boolean eIsDir = raf.readByte() == (byte)0 ? false : true; |
duke@1 | 978 | |
duke@1 | 979 | // Read offset of bytes in the real Jar/Zip file |
duke@1 | 980 | int eOffset = raf.readInt(); |
duke@1 | 981 | |
duke@1 | 982 | // Read size of the file in the real Jar/Zip file |
duke@1 | 983 | int eSize = raf.readInt(); |
duke@1 | 984 | |
duke@1 | 985 | // Read compressed size of the file in the real Jar/Zip file |
duke@1 | 986 | int eCsize = raf.readInt(); |
duke@1 | 987 | |
duke@1 | 988 | // Read java time stamp of the file in the real Jar/Zip file |
duke@1 | 989 | long eJavaTimestamp = raf.readLong(); |
duke@1 | 990 | |
jjg@57 | 991 | Entry rfie = new Entry(dirName, eName); |
duke@1 | 992 | rfie.isDir = eIsDir; |
duke@1 | 993 | rfie.offset = eOffset; |
duke@1 | 994 | rfie.size = eSize; |
duke@1 | 995 | rfie.compressedSize = eCsize; |
duke@1 | 996 | rfie.javatime = eJavaTimestamp; |
duke@1 | 997 | entries.add(rfie); |
duke@1 | 998 | } |
duke@1 | 999 | } catch (Throwable t) { |
duke@1 | 1000 | // Do nothing |
duke@1 | 1001 | } finally { |
duke@1 | 1002 | try { |
duke@1 | 1003 | if (raf == null) { |
duke@1 | 1004 | raf.close(); |
duke@1 | 1005 | } |
duke@1 | 1006 | } catch (Throwable t) { |
duke@1 | 1007 | // Do nothing |
duke@1 | 1008 | } |
duke@1 | 1009 | } |
duke@1 | 1010 | } |
duke@1 | 1011 | } |
duke@1 | 1012 | |
duke@1 | 1013 | entriesInited = true; |
duke@1 | 1014 | } |
duke@1 | 1015 | |
jjg@57 | 1016 | List<Entry> getEntriesAsCollection() { |
duke@1 | 1017 | initEntries(); |
duke@1 | 1018 | |
duke@1 | 1019 | return entries; |
duke@1 | 1020 | } |
duke@1 | 1021 | } |
duke@1 | 1022 | |
duke@1 | 1023 | private boolean readIndex() { |
duke@1 | 1024 | if (triedToReadIndex || !usePreindexedCache) { |
duke@1 | 1025 | return false; |
duke@1 | 1026 | } |
duke@1 | 1027 | |
duke@1 | 1028 | boolean ret = false; |
duke@1 | 1029 | lock.lock(); |
duke@1 | 1030 | try { |
duke@1 | 1031 | triedToReadIndex = true; |
duke@1 | 1032 | RandomAccessFile raf = null; |
duke@1 | 1033 | try { |
duke@1 | 1034 | File indexFileName = getIndexFile(); |
duke@1 | 1035 | raf = new RandomAccessFile(indexFileName, "r"); |
duke@1 | 1036 | |
duke@1 | 1037 | long fileStamp = raf.readLong(); |
duke@1 | 1038 | if (zipFile.lastModified() != fileStamp) { |
duke@1 | 1039 | ret = false; |
duke@1 | 1040 | } else { |
jjg@103 | 1041 | directories = new HashMap<RelativeDirectory, DirectoryEntry>(); |
duke@1 | 1042 | int numDirs = raf.readInt(); |
duke@1 | 1043 | for (int nDirs = 0; nDirs < numDirs; nDirs++) { |
duke@1 | 1044 | int dirNameBytesLen = raf.readInt(); |
duke@1 | 1045 | byte [] dirNameBytes = new byte[dirNameBytesLen]; |
duke@1 | 1046 | raf.read(dirNameBytes); |
duke@1 | 1047 | |
jjg@103 | 1048 | RelativeDirectory dirNameStr = getRelativeDirectory(new String(dirNameBytes, "UTF-8")); |
duke@1 | 1049 | DirectoryEntry de = new DirectoryEntry(dirNameStr, this); |
duke@1 | 1050 | de.numEntries = raf.readInt(); |
duke@1 | 1051 | de.writtenOffsetOffset = raf.readLong(); |
duke@1 | 1052 | directories.put(dirNameStr, de); |
duke@1 | 1053 | } |
duke@1 | 1054 | ret = true; |
duke@1 | 1055 | zipFileLastModified = fileStamp; |
duke@1 | 1056 | } |
duke@1 | 1057 | } catch (Throwable t) { |
duke@1 | 1058 | // Do nothing |
duke@1 | 1059 | } finally { |
duke@1 | 1060 | if (raf != null) { |
duke@1 | 1061 | try { |
duke@1 | 1062 | raf.close(); |
duke@1 | 1063 | } catch (Throwable tt) { |
duke@1 | 1064 | // Do nothing |
duke@1 | 1065 | } |
duke@1 | 1066 | } |
duke@1 | 1067 | } |
duke@1 | 1068 | if (ret == true) { |
duke@1 | 1069 | readFromIndex = true; |
duke@1 | 1070 | } |
duke@1 | 1071 | } |
duke@1 | 1072 | finally { |
duke@1 | 1073 | lock.unlock(); |
duke@1 | 1074 | } |
duke@1 | 1075 | |
duke@1 | 1076 | return ret; |
duke@1 | 1077 | } |
duke@1 | 1078 | |
duke@1 | 1079 | private boolean writeIndex() { |
duke@1 | 1080 | boolean ret = false; |
duke@1 | 1081 | if (readFromIndex || !usePreindexedCache) { |
duke@1 | 1082 | return true; |
duke@1 | 1083 | } |
duke@1 | 1084 | |
duke@1 | 1085 | if (!writeIndex) { |
duke@1 | 1086 | return true; |
duke@1 | 1087 | } |
duke@1 | 1088 | |
duke@1 | 1089 | File indexFile = getIndexFile(); |
duke@1 | 1090 | if (indexFile == null) { |
duke@1 | 1091 | return false; |
duke@1 | 1092 | } |
duke@1 | 1093 | |
duke@1 | 1094 | RandomAccessFile raf = null; |
duke@1 | 1095 | long writtenSoFar = 0; |
duke@1 | 1096 | try { |
duke@1 | 1097 | raf = new RandomAccessFile(indexFile, "rw"); |
duke@1 | 1098 | |
duke@1 | 1099 | raf.writeLong(zipFileLastModified); |
duke@1 | 1100 | writtenSoFar += 8; |
duke@1 | 1101 | |
duke@1 | 1102 | List<DirectoryEntry> directoriesToWrite = new ArrayList<DirectoryEntry>(); |
jjg@103 | 1103 | Map<RelativeDirectory, Long> offsets = new HashMap<RelativeDirectory, Long>(); |
duke@1 | 1104 | raf.writeInt(directories.keySet().size()); |
duke@1 | 1105 | writtenSoFar += 4; |
duke@1 | 1106 | |
jjg@103 | 1107 | for (RelativeDirectory dirName: directories.keySet()) { |
duke@1 | 1108 | DirectoryEntry dirEntry = directories.get(dirName); |
duke@1 | 1109 | |
duke@1 | 1110 | directoriesToWrite.add(dirEntry); |
duke@1 | 1111 | |
duke@1 | 1112 | // Write the dir name bytes |
jjg@103 | 1113 | byte [] dirNameBytes = dirName.getPath().getBytes("UTF-8"); |
duke@1 | 1114 | int dirNameBytesLen = dirNameBytes.length; |
duke@1 | 1115 | raf.writeInt(dirNameBytesLen); |
duke@1 | 1116 | writtenSoFar += 4; |
duke@1 | 1117 | |
duke@1 | 1118 | raf.write(dirNameBytes); |
duke@1 | 1119 | writtenSoFar += dirNameBytesLen; |
duke@1 | 1120 | |
duke@1 | 1121 | // Write the number of files in the dir |
mcimadamore@184 | 1122 | List<Entry> dirEntries = dirEntry.getEntriesAsCollection(); |
duke@1 | 1123 | raf.writeInt(dirEntries.size()); |
duke@1 | 1124 | writtenSoFar += 4; |
duke@1 | 1125 | |
duke@1 | 1126 | offsets.put(dirName, new Long(writtenSoFar)); |
duke@1 | 1127 | |
duke@1 | 1128 | // Write the offset of the file's data in the dir |
duke@1 | 1129 | dirEntry.writtenOffsetOffset = 0L; |
duke@1 | 1130 | raf.writeLong(0L); |
duke@1 | 1131 | writtenSoFar += 8; |
duke@1 | 1132 | } |
duke@1 | 1133 | |
duke@1 | 1134 | for (DirectoryEntry de : directoriesToWrite) { |
duke@1 | 1135 | // Fix up the offset in the directory table |
duke@1 | 1136 | long currFP = raf.getFilePointer(); |
duke@1 | 1137 | |
duke@1 | 1138 | long offsetOffset = offsets.get(de.dirName).longValue(); |
duke@1 | 1139 | raf.seek(offsetOffset); |
duke@1 | 1140 | raf.writeLong(writtenSoFar); |
duke@1 | 1141 | |
duke@1 | 1142 | raf.seek(currFP); |
duke@1 | 1143 | |
duke@1 | 1144 | // Now write each of the files in the DirectoryEntry |
jjg@57 | 1145 | List<Entry> entries = de.getEntriesAsCollection(); |
jjg@57 | 1146 | for (Entry zfie : entries) { |
duke@1 | 1147 | // Write the name bytes |
duke@1 | 1148 | byte [] zfieNameBytes = zfie.name.getBytes("UTF-8"); |
duke@1 | 1149 | int zfieNameBytesLen = zfieNameBytes.length; |
duke@1 | 1150 | raf.writeInt(zfieNameBytesLen); |
duke@1 | 1151 | writtenSoFar += 4; |
duke@1 | 1152 | raf.write(zfieNameBytes); |
duke@1 | 1153 | writtenSoFar += zfieNameBytesLen; |
duke@1 | 1154 | |
duke@1 | 1155 | // Write isDir |
duke@1 | 1156 | raf.writeByte(zfie.isDir ? (byte)1 : (byte)0); |
duke@1 | 1157 | writtenSoFar += 1; |
duke@1 | 1158 | |
duke@1 | 1159 | // Write offset of bytes in the real Jar/Zip file |
duke@1 | 1160 | raf.writeInt(zfie.offset); |
duke@1 | 1161 | writtenSoFar += 4; |
duke@1 | 1162 | |
duke@1 | 1163 | // Write size of the file in the real Jar/Zip file |
duke@1 | 1164 | raf.writeInt(zfie.size); |
duke@1 | 1165 | writtenSoFar += 4; |
duke@1 | 1166 | |
duke@1 | 1167 | // Write compressed size of the file in the real Jar/Zip file |
duke@1 | 1168 | raf.writeInt(zfie.compressedSize); |
duke@1 | 1169 | writtenSoFar += 4; |
duke@1 | 1170 | |
duke@1 | 1171 | // Write java time stamp of the file in the real Jar/Zip file |
duke@1 | 1172 | raf.writeLong(zfie.getLastModified()); |
duke@1 | 1173 | writtenSoFar += 8; |
duke@1 | 1174 | } |
duke@1 | 1175 | } |
duke@1 | 1176 | } catch (Throwable t) { |
duke@1 | 1177 | // Do nothing |
duke@1 | 1178 | } finally { |
duke@1 | 1179 | try { |
duke@1 | 1180 | if (raf != null) { |
duke@1 | 1181 | raf.close(); |
duke@1 | 1182 | } |
duke@1 | 1183 | } catch(IOException ioe) { |
duke@1 | 1184 | // Do nothing |
duke@1 | 1185 | } |
duke@1 | 1186 | } |
duke@1 | 1187 | |
duke@1 | 1188 | return ret; |
duke@1 | 1189 | } |
duke@1 | 1190 | |
duke@1 | 1191 | public boolean writeZipIndex() { |
duke@1 | 1192 | lock.lock(); |
duke@1 | 1193 | try { |
duke@1 | 1194 | return writeIndex(); |
duke@1 | 1195 | } |
duke@1 | 1196 | finally { |
duke@1 | 1197 | lock.unlock(); |
duke@1 | 1198 | } |
duke@1 | 1199 | } |
duke@1 | 1200 | |
duke@1 | 1201 | private File getIndexFile() { |
duke@1 | 1202 | if (zipIndexFile == null) { |
duke@1 | 1203 | if (zipFile == null) { |
duke@1 | 1204 | return null; |
duke@1 | 1205 | } |
duke@1 | 1206 | |
duke@1 | 1207 | zipIndexFile = new File((preindexedCacheLocation == null ? "" : preindexedCacheLocation) + |
duke@1 | 1208 | zipFile.getName() + ".index"); |
duke@1 | 1209 | } |
duke@1 | 1210 | |
duke@1 | 1211 | return zipIndexFile; |
duke@1 | 1212 | } |
duke@1 | 1213 | |
duke@1 | 1214 | public File getZipFile() { |
duke@1 | 1215 | return zipFile; |
duke@1 | 1216 | } |
jjg@57 | 1217 | |
jjg@103 | 1218 | private RelativeDirectory getRelativeDirectory(String path) { |
jjg@103 | 1219 | RelativeDirectory rd; |
jjg@103 | 1220 | SoftReference<RelativeDirectory> ref = relativeDirectoryCache.get(path); |
jjg@103 | 1221 | if (ref != null) { |
jjg@103 | 1222 | rd = ref.get(); |
jjg@103 | 1223 | if (rd != null) |
jjg@103 | 1224 | return rd; |
jjg@103 | 1225 | } |
jjg@103 | 1226 | rd = new RelativeDirectory(path); |
jjg@103 | 1227 | relativeDirectoryCache.put(path, new SoftReference<RelativeDirectory>(rd)); |
jjg@103 | 1228 | return rd; |
jjg@103 | 1229 | } |
jjg@57 | 1230 | |
jjg@57 | 1231 | static class Entry implements Comparable<Entry> { |
jjg@57 | 1232 | public static final Entry[] EMPTY_ARRAY = {}; |
jjg@57 | 1233 | |
jjg@57 | 1234 | // Directory related |
jjg@103 | 1235 | RelativeDirectory dir; |
jjg@57 | 1236 | boolean isDir; |
jjg@57 | 1237 | |
jjg@57 | 1238 | // File related |
jjg@57 | 1239 | String name; |
jjg@57 | 1240 | |
jjg@57 | 1241 | int offset; |
jjg@57 | 1242 | int size; |
jjg@57 | 1243 | int compressedSize; |
jjg@57 | 1244 | long javatime; |
jjg@57 | 1245 | |
jjg@57 | 1246 | private int nativetime; |
jjg@57 | 1247 | |
jjg@103 | 1248 | public Entry(RelativePath path) { |
jjg@103 | 1249 | this(path.dirname(), path.basename()); |
jjg@57 | 1250 | } |
jjg@57 | 1251 | |
jjg@103 | 1252 | public Entry(RelativeDirectory directory, String name) { |
jjg@103 | 1253 | this.dir = directory; |
jjg@57 | 1254 | this.name = name; |
jjg@57 | 1255 | } |
jjg@57 | 1256 | |
jjg@57 | 1257 | public String getName() { |
jjg@103 | 1258 | return new RelativeFile(dir, name).getPath(); |
jjg@57 | 1259 | } |
jjg@57 | 1260 | |
jjg@57 | 1261 | public String getFileName() { |
jjg@57 | 1262 | return name; |
jjg@57 | 1263 | } |
jjg@57 | 1264 | |
jjg@57 | 1265 | public long getLastModified() { |
jjg@57 | 1266 | if (javatime == 0) { |
jjg@57 | 1267 | javatime = dosToJavaTime(nativetime); |
jjg@57 | 1268 | } |
jjg@57 | 1269 | return javatime; |
jjg@57 | 1270 | } |
jjg@57 | 1271 | |
jjg@71 | 1272 | // based on dosToJavaTime in java.util.Zip, but avoiding the |
jjg@71 | 1273 | // use of deprecated Date constructor |
jjg@71 | 1274 | private static long dosToJavaTime(int dtime) { |
jjg@71 | 1275 | Calendar c = Calendar.getInstance(); |
jjg@71 | 1276 | c.set(Calendar.YEAR, ((dtime >> 25) & 0x7f) + 1980); |
jjg@71 | 1277 | c.set(Calendar.MONTH, ((dtime >> 21) & 0x0f) - 1); |
jjg@71 | 1278 | c.set(Calendar.DATE, ((dtime >> 16) & 0x1f)); |
jjg@71 | 1279 | c.set(Calendar.HOUR_OF_DAY, ((dtime >> 11) & 0x1f)); |
jjg@71 | 1280 | c.set(Calendar.MINUTE, ((dtime >> 5) & 0x3f)); |
jjg@71 | 1281 | c.set(Calendar.SECOND, ((dtime << 1) & 0x3e)); |
jjg@71 | 1282 | c.set(Calendar.MILLISECOND, 0); |
jjg@71 | 1283 | return c.getTimeInMillis(); |
jjg@57 | 1284 | } |
jjg@57 | 1285 | |
jjg@57 | 1286 | void setNativeTime(int natTime) { |
jjg@57 | 1287 | nativetime = natTime; |
jjg@57 | 1288 | } |
jjg@57 | 1289 | |
jjg@57 | 1290 | public boolean isDirectory() { |
jjg@57 | 1291 | return isDir; |
jjg@57 | 1292 | } |
jjg@57 | 1293 | |
jjg@57 | 1294 | public int compareTo(Entry other) { |
jjg@103 | 1295 | RelativeDirectory otherD = other.dir; |
jjg@57 | 1296 | if (dir != otherD) { |
jjg@57 | 1297 | int c = dir.compareTo(otherD); |
jjg@57 | 1298 | if (c != 0) |
jjg@57 | 1299 | return c; |
jjg@57 | 1300 | } |
jjg@57 | 1301 | return name.compareTo(other.name); |
jjg@57 | 1302 | } |
jjg@57 | 1303 | |
jjg@103 | 1304 | @Override |
jjg@103 | 1305 | public boolean equals(Object o) { |
jjg@103 | 1306 | if (!(o instanceof Entry)) |
jjg@103 | 1307 | return false; |
jjg@103 | 1308 | Entry other = (Entry) o; |
jjg@103 | 1309 | return dir.equals(other.dir) && name.equals(other.name); |
jjg@103 | 1310 | } |
jjg@103 | 1311 | |
jjg@103 | 1312 | @Override |
jjg@103 | 1313 | public int hashCode() { |
jjg@103 | 1314 | int hash = 7; |
jjg@103 | 1315 | hash = 97 * hash + (this.dir != null ? this.dir.hashCode() : 0); |
jjg@103 | 1316 | hash = 97 * hash + (this.name != null ? this.name.hashCode() : 0); |
jjg@103 | 1317 | return hash; |
jjg@103 | 1318 | } |
jjg@103 | 1319 | |
jjg@57 | 1320 | |
jjg@57 | 1321 | public String toString() { |
jjg@57 | 1322 | return isDir ? ("Dir:" + dir + " : " + name) : |
jjg@57 | 1323 | (dir + ":" + name); |
jjg@57 | 1324 | } |
jjg@57 | 1325 | } |
jjg@57 | 1326 | |
duke@1 | 1327 | } |