Overview
Comment: | Move OFLHAArchive_LHStream to a separate file |
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Downloads: | Tarball | ZIP archive | SQL archive |
Timelines: | family | ancestors | descendants | both | trunk |
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SHA3-256: |
3d7f5098f27ad5766ec576446da581ef |
User & Date: | js on 2018-06-16 15:50:08 |
Other Links: | manifest | tags |
Context
2018-06-17
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01:01 | OFLHAArchive: Add write and append support check-in: 54fe3999b7 user: js tags: trunk | |
2018-06-16
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15:50 | Move OFLHAArchive_LHStream to a separate file check-in: 3d7f5098f2 user: js tags: trunk | |
14:36 | OFXML*: Remember delimiter of attributes check-in: 0ec6f9c1d9 user: js tags: trunk | |
Changes
Modified src/Makefile from [4d1d1ae8a6] to [c29b75ab63].
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170 171 172 173 174 175 176 177 178 179 180 181 182 183 | OFArray_adjacentSubarray.m \ OFArray_subarray.m \ OFCharacterSet_bitset.m \ OFCharacterSet_invertedSet.m \ OFCharacterSet_range.m \ OFCountedSet_hashtable.m \ OFDictionary_hashtable.m \ OFMutableArray_adjacent.m \ OFMutableDictionary_hashtable.m \ OFMutableSet_hashtable.m \ OFMutableString_UTF8.m \ OFSet_hashtable.m \ OFString_UTF8.m \ ${OFURLHANDLER_HTTP_M} \ | > | 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 | OFArray_adjacentSubarray.m \ OFArray_subarray.m \ OFCharacterSet_bitset.m \ OFCharacterSet_invertedSet.m \ OFCharacterSet_range.m \ OFCountedSet_hashtable.m \ OFDictionary_hashtable.m \ OFLHAArchive_LHStream.m \ OFMutableArray_adjacent.m \ OFMutableDictionary_hashtable.m \ OFMutableSet_hashtable.m \ OFMutableString_UTF8.m \ OFSet_hashtable.m \ OFString_UTF8.m \ ${OFURLHANDLER_HTTP_M} \ |
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Modified src/OFLHAArchive.m from [1f3aa621cb] to [34e73a192a].
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13 14 15 16 17 18 19 | * Public License, either version 2 or 3, which can be found in the file * LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this * file. */ #include "config.h" | < < > < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < | 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 | * Public License, either version 2 or 3, which can be found in the file * LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this * file. */ #include "config.h" #import "OFLHAArchive.h" #import "OFLHAArchiveEntry.h" #import "OFLHAArchiveEntry+Private.h" #ifdef OF_HAVE_FILES # import "OFFile.h" #endif #import "OFLHAArchive_LHStream.h" #import "OFStream.h" #import "OFSeekableStream.h" #import "OFString.h" #import "crc16.h" #import "OFChecksumMismatchException.h" #import "OFInvalidArgumentException.h" #import "OFNotImplementedException.h" #import "OFNotOpenException.h" #import "OFTruncatedDataException.h" @interface OFLHAArchive_FileReadStream: OFStream <OFReadyForReadingObserving> { OF_KINDOF(OFStream *) _stream; OF_KINDOF(OFStream *) _decompressedStream; OFLHAArchiveEntry *_entry; uint32_t _toRead, _bytesConsumed; uint16_t _CRC16; bool _atEndOfStream; } - (instancetype)of_initWithStream: (OF_KINDOF(OFStream *))stream entry: (OFLHAArchiveEntry *)entry; - (void)of_skip; @end @implementation OFLHAArchive @synthesize encoding = _encoding; + (instancetype)archiveWithStream: (OF_KINDOF(OFStream *))stream mode: (OFString *)mode { return [[[self alloc] initWithStream: stream |
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281 282 283 284 285 286 287 | [_lastReturnedStream close]; [_lastReturnedStream release]; _lastReturnedStream = nil; [_stream release]; _stream = nil; } | < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < | 186 187 188 189 190 191 192 193 194 195 196 197 198 199 | [_lastReturnedStream close]; [_lastReturnedStream release]; _lastReturnedStream = nil; [_stream release]; _stream = nil; } @end @implementation OFLHAArchive_FileReadStream - (instancetype)of_initWithStream: (OF_KINDOF(OFStream *))stream entry: (OFLHAArchiveEntry *)entry { self = [super init]; |
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Added src/OFLHAArchive_LHStream.h version [fdfde4f5df].
> > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 | /* * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, * 2018 * Jonathan Schleifer <js@heap.zone> * * All rights reserved. * * This file is part of ObjFW. It may be distributed under the terms of the * Q Public License 1.0, which can be found in the file LICENSE.QPL included in * the packaging of this file. * * Alternatively, it may be distributed under the terms of the GNU General * Public License, either version 2 or 3, which can be found in the file * LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this * file. */ #import "OFStream.h" OF_ASSUME_NONNULL_BEGIN #define OF_LHA_ARCHIVE_LHSTREAM_BUFFER_SIZE 4096 @interface OFLHAArchive_LHStream: OFStream { @public OF_KINDOF(OFStream *) _stream; uint8_t _distanceBits, _dictionaryBits; unsigned char _buffer[OF_LHA_ARCHIVE_LHSTREAM_BUFFER_SIZE]; uint32_t _bytesConsumed; uint16_t _bufferIndex, _bufferLength; uint8_t _byte; uint8_t _bitIndex, _savedBitsLength; uint16_t _savedBits; unsigned char *_slidingWindow; uint32_t _slidingWindowIndex, _slidingWindowMask; int _state; uint16_t _symbolsLeft; struct of_huffman_tree *_Nullable _codeLenTree, *_Nullable _litLenTree; struct of_huffman_tree *_Nullable _distTree, *_Nullable _treeIter; uint16_t _codesCount, _codesReceived; bool _currentIsExtendedLength, _skip; uint8_t *_Nullable _codesLengths; uint16_t _length; uint32_t _distance; } - (instancetype)of_initWithStream: (OF_KINDOF(OFStream *))stream distanceBits: (uint8_t)distanceBits dictionaryBits: (uint8_t)dictionaryBits; @end OF_ASSUME_NONNULL_END |
Added src/OFLHAArchive_LHStream.m version [3ba001d7d1].
> > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 | /* * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, * 2018 * Jonathan Schleifer <js@heap.zone> * * All rights reserved. * * This file is part of ObjFW. It may be distributed under the terms of the * Q Public License 1.0, which can be found in the file LICENSE.QPL included in * the packaging of this file. * * Alternatively, it may be distributed under the terms of the GNU General * Public License, either version 2 or 3, which can be found in the file * LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this * file. */ #include "config.h" #include <assert.h> #import "OFLHAArchive_LHStream.h" #import "huffman_tree.h" #import "OFInvalidFormatException.h" #import "OFNotOpenException.h" enum state { STATE_BLOCK_HEADER, STATE_CODE_LEN_CODES_COUNT, STATE_CODE_LEN_TREE, STATE_CODE_LEN_TREE_SINGLE, STATE_LITLEN_CODES_COUNT, STATE_LITLEN_TREE, STATE_LITLEN_TREE_SINGLE, STATE_DIST_CODES_COUNT, STATE_DIST_TREE, STATE_DIST_TREE_SINGLE, STATE_BLOCK_LITLEN, STATE_BLOCK_DIST_LENGTH, STATE_BLOCK_DIST_LENGTH_EXTRA, STATE_BLOCK_LEN_DIST_PAIR }; static bool tryReadBits(OFLHAArchive_LHStream *stream, uint16_t *bits, uint8_t count) { uint16_t ret = stream->_savedBits; assert(stream->_savedBitsLength < count); for (uint_fast8_t i = stream->_savedBitsLength; i < count; i++) { if OF_UNLIKELY (stream->_bitIndex == 8) { if (stream->_bufferIndex < stream->_bufferLength) stream->_byte = stream->_buffer[stream->_bufferIndex++]; else { const size_t bufferLength = OF_LHA_ARCHIVE_LHSTREAM_BUFFER_SIZE; size_t length = [stream->_stream readIntoBuffer: stream->_buffer length: bufferLength]; stream->_bytesConsumed += (uint32_t)length; if OF_UNLIKELY (length < 1) { stream->_savedBits = ret; stream->_savedBitsLength = i; return false; } stream->_byte = stream->_buffer[0]; stream->_bufferIndex = 1; stream->_bufferLength = (uint16_t)length; } stream->_bitIndex = 0; } ret = (ret << 1) | ((stream->_byte >> (7 - stream->_bitIndex++)) & 1); } stream->_savedBits = 0; stream->_savedBitsLength = 0; *bits = ret; return true; } @implementation OFLHAArchive_LHStream - (instancetype)of_initWithStream: (OF_KINDOF(OFStream *))stream distanceBits: (uint8_t)distanceBits dictionaryBits: (uint8_t)dictionaryBits { self = [super init]; @try { _stream = [stream retain]; /* 0-7 address the bit, 8 means fetch next byte */ _bitIndex = 8; _distanceBits = distanceBits; _dictionaryBits = dictionaryBits; _slidingWindowMask = (1 << dictionaryBits) - 1; _slidingWindow = [self allocMemoryWithSize: _slidingWindowMask + 1]; memset(_slidingWindow, ' ', _slidingWindowMask + 1); } @catch (id e) { [self release]; @throw e; } return self; } - (void)dealloc { [self close]; if (_codeLenTree != NULL) of_huffman_tree_release(_codeLenTree); if (_litLenTree != NULL) of_huffman_tree_release(_litLenTree); if (_distTree != NULL) of_huffman_tree_release(_distTree); [super dealloc]; } - (size_t)lowlevelReadIntoBuffer: (void *)buffer_ length: (size_t)length { unsigned char *buffer = buffer_; uint16_t bits, value; size_t bytesWritten = 0; if (_stream == nil) @throw [OFNotOpenException exceptionWithObject: self]; if ([_stream isAtEndOfStream] && _bufferLength - _bufferIndex == 0 && _state == STATE_BLOCK_HEADER) return 0; start: switch ((enum state)_state) { case STATE_BLOCK_HEADER: if OF_UNLIKELY (!tryReadBits(self, &bits, 16)) return bytesWritten; _symbolsLeft = bits; _state = STATE_CODE_LEN_CODES_COUNT; goto start; case STATE_CODE_LEN_CODES_COUNT: if OF_UNLIKELY (!tryReadBits(self, &bits, 5)) return bytesWritten; if OF_UNLIKELY (bits > 20) @throw [OFInvalidFormatException exception]; if OF_UNLIKELY (bits == 0) { _state = STATE_CODE_LEN_TREE_SINGLE; goto start; } _codesCount = bits; _codesReceived = 0; _codesLengths = [self allocZeroedMemoryWithSize: bits]; _skip = true; _state = STATE_CODE_LEN_TREE; goto start; case STATE_CODE_LEN_TREE: while (_codesReceived < _codesCount) { if OF_UNLIKELY (_currentIsExtendedLength) { if OF_UNLIKELY (!tryReadBits(self, &bits, 1)) return bytesWritten; if OF_UNLIKELY (bits == 0) { _codesReceived++; _currentIsExtendedLength = false; continue; } _codesLengths[_codesReceived]++; continue; } if OF_UNLIKELY (_codesReceived == 3 && _skip) { if OF_UNLIKELY (!tryReadBits(self, &bits, 2)) return bytesWritten; if OF_UNLIKELY (_codesReceived + bits > _codesCount) @throw [OFInvalidFormatException exception]; for (uint_fast8_t j = 0; j < bits; j++) _codesLengths[_codesReceived++] = 0; _skip = false; continue; } if OF_UNLIKELY (!tryReadBits(self, &bits, 3)) return bytesWritten; _codesLengths[_codesReceived] = bits; if OF_UNLIKELY (bits == 7) { _currentIsExtendedLength = true; continue; } else _codesReceived++; } _codeLenTree = of_huffman_tree_construct(_codesLengths, _codesCount); [self freeMemory: _codesLengths]; _state = STATE_LITLEN_CODES_COUNT; goto start; case STATE_CODE_LEN_TREE_SINGLE: if OF_UNLIKELY (!tryReadBits(self, &bits, 5)) return bytesWritten; _codeLenTree = of_huffman_tree_construct_single(bits); _state = STATE_LITLEN_CODES_COUNT; goto start; case STATE_LITLEN_CODES_COUNT: if OF_UNLIKELY (!tryReadBits(self, &bits, 9)) return bytesWritten; if OF_UNLIKELY (bits > 510) @throw [OFInvalidFormatException exception]; if OF_UNLIKELY (bits == 0) { of_huffman_tree_release(_codeLenTree); _codeLenTree = NULL; _state = STATE_LITLEN_TREE_SINGLE; goto start; } _codesCount = bits; _codesReceived = 0; _codesLengths = [self allocZeroedMemoryWithSize: bits]; _skip = false; _treeIter = _codeLenTree; _state = STATE_LITLEN_TREE; goto start; case STATE_LITLEN_TREE: while (_codesReceived < _codesCount) { if OF_UNLIKELY (_skip) { uint16_t skipCount; switch (_codesLengths[_codesReceived]) { case 0: skipCount = 1; break; case 1: if OF_UNLIKELY (!tryReadBits(self, &bits, 4)) return bytesWritten; skipCount = bits + 3; break; case 2: if OF_UNLIKELY (!tryReadBits(self, &bits, 9)) return bytesWritten; skipCount = bits + 20; break; default: assert(0); } if OF_UNLIKELY (_codesReceived + skipCount > _codesCount) @throw [OFInvalidFormatException exception]; for (uint_fast16_t j = 0; j < skipCount; j++) _codesLengths[_codesReceived++] = 0; _skip = false; continue; } if (!of_huffman_tree_walk(self, tryReadBits, &_treeIter, &value)) return bytesWritten; _treeIter = _codeLenTree; if (value < 3) { _codesLengths[_codesReceived] = value; _skip = true; } else _codesLengths[_codesReceived++] = value - 2; } _litLenTree = of_huffman_tree_construct(_codesLengths, _codesCount); [self freeMemory: _codesLengths]; of_huffman_tree_release(_codeLenTree); _codeLenTree = NULL; _state = STATE_DIST_CODES_COUNT; goto start; case STATE_LITLEN_TREE_SINGLE: if OF_UNLIKELY (!tryReadBits(self, &bits, 9)) return bytesWritten; _litLenTree = of_huffman_tree_construct_single(bits); _state = STATE_DIST_CODES_COUNT; goto start; case STATE_DIST_CODES_COUNT: if OF_UNLIKELY (!tryReadBits(self, &bits, _distanceBits)) return bytesWritten; if OF_UNLIKELY (bits > _dictionaryBits) @throw [OFInvalidFormatException exception]; if OF_UNLIKELY (bits == 0) { _state = STATE_DIST_TREE_SINGLE; goto start; } _codesCount = bits; _codesReceived = 0; _codesLengths = [self allocZeroedMemoryWithSize: bits]; _treeIter = _codeLenTree; _state = STATE_DIST_TREE; goto start; case STATE_DIST_TREE: while (_codesReceived < _codesCount) { if OF_UNLIKELY (_currentIsExtendedLength) { if OF_UNLIKELY (!tryReadBits(self, &bits, 1)) return bytesWritten; if OF_UNLIKELY (bits == 0) { _codesReceived++; _currentIsExtendedLength = false; continue; } _codesLengths[_codesReceived]++; continue; } if OF_UNLIKELY (!tryReadBits(self, &bits, 3)) return bytesWritten; _codesLengths[_codesReceived] = bits; if OF_UNLIKELY (bits == 7) { _currentIsExtendedLength = true; continue; } else _codesReceived++; } _distTree = of_huffman_tree_construct(_codesLengths, _codesCount); [self freeMemory: _codesLengths]; _treeIter = _litLenTree; _state = STATE_BLOCK_LITLEN; goto start; case STATE_DIST_TREE_SINGLE: if OF_UNLIKELY (!tryReadBits(self, &bits, _distanceBits)) return bytesWritten; _distTree = of_huffman_tree_construct_single(bits); _treeIter = _litLenTree; _state = STATE_BLOCK_LITLEN; goto start; case STATE_BLOCK_LITLEN: if OF_UNLIKELY (_symbolsLeft == 0) { of_huffman_tree_release(_litLenTree); of_huffman_tree_release(_distTree); _litLenTree = _distTree = NULL; _state = STATE_BLOCK_HEADER; /* * We must return here, as there is no indication * whether this was the last block. Whoever called this * method needs to check if everything has been read * already and only call read again if that is not the * case. * * We must also unread the buffer, in case this was the * last block and something else follows, e.g. another * LHA header. */ [_stream unreadFromBuffer: _buffer + _bufferIndex length: _bufferLength - _bufferIndex]; _bytesConsumed -= _bufferLength - _bufferIndex; _bufferIndex = _bufferLength = 0; return bytesWritten; } if OF_UNLIKELY (length == 0) return bytesWritten; if OF_UNLIKELY (!of_huffman_tree_walk(self, tryReadBits, &_treeIter, &value)) return bytesWritten; if OF_LIKELY (value < 256) { buffer[bytesWritten++] = value; length--; _slidingWindow[_slidingWindowIndex] = value; _slidingWindowIndex = (_slidingWindowIndex + 1) & _slidingWindowMask; _symbolsLeft--; _treeIter = _litLenTree; } else { _length = value - 253; _treeIter = _distTree; _state = STATE_BLOCK_DIST_LENGTH; } goto start; case STATE_BLOCK_DIST_LENGTH: if OF_UNLIKELY (!of_huffman_tree_walk(self, tryReadBits, &_treeIter, &value)) return bytesWritten; _distance = value; _state = (value < 2 ? STATE_BLOCK_LEN_DIST_PAIR : STATE_BLOCK_DIST_LENGTH_EXTRA); goto start; case STATE_BLOCK_DIST_LENGTH_EXTRA: if OF_UNLIKELY (!tryReadBits(self, &bits, _distance - 1)) return bytesWritten; _distance = bits + (1 << (_distance - 1)); _state = STATE_BLOCK_LEN_DIST_PAIR; goto start; case STATE_BLOCK_LEN_DIST_PAIR: for (uint_fast16_t i = 0; i < _length; i++) { uint32_t idx; if OF_UNLIKELY (length == 0) { _length -= i; return bytesWritten; } idx = (_slidingWindowIndex - _distance - 1) & _slidingWindowMask; value = _slidingWindow[idx]; buffer[bytesWritten++] = value; length--; _slidingWindow[_slidingWindowIndex] = value; _slidingWindowIndex = (_slidingWindowIndex + 1) & _slidingWindowMask; } _symbolsLeft--; _treeIter = _litLenTree; _state = STATE_BLOCK_LITLEN; goto start; } OF_UNREACHABLE } - (bool)lowlevelIsAtEndOfStream { if (_stream == nil) @throw [OFNotOpenException exceptionWithObject: self]; return ([_stream isAtEndOfStream] && _bufferLength - _bufferIndex == 0 && _state == STATE_BLOCK_HEADER); } - (int)fileDescriptorForReading { return [_stream fileDescriptorForReading]; } - (bool)hasDataInReadBuffer { return ([super hasDataInReadBuffer] || [_stream hasDataInReadBuffer] || _bufferLength - _bufferIndex > 0); } - (void)close { /* Give back our buffer to the stream, in case it's shared */ [_stream unreadFromBuffer: _buffer + _bufferIndex length: _bufferLength - _bufferIndex]; _bytesConsumed -= _bufferLength - _bufferIndex; _bufferIndex = _bufferLength = 0; [_stream release]; _stream = nil; [super close]; } @end |