Differences From Artifact [6c1eafc699]:
- File
src/OFStream.h
— part of check-in
[6343e04dcd]
at
2012-10-17 20:16:10
on branch trunk
— Pass exceptions on async I/O.
This makes it possible to handle exceptions that occurred during async
I/O in the specified handler. (user: js, size: 34683) [annotate] [blame] [check-ins using]
To Artifact [47ab0fd36d]:
- File src/OFStream.h — part of check-in [1bcd4b3d46] at 2012-10-29 13:37:56 on branch 0.7 — Documentation improvements (add references). (user: js, size: 34668) [annotate] [blame] [check-ins using]
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43 44 45 46 47 48 49 | * \warning Even though the OFCopying protocol is implemented, it does * <i>not</i> return an independent copy of the stream, but instead * retains it. This is so that the stream can be used as a key for a * dictionary, so context can be associated with a stream. Using a * stream in more than one thread at the same time is not thread-safe, * even if copy was called to create one "instance" for every thread! * | | > | | | | | | 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 | * \warning Even though the OFCopying protocol is implemented, it does * <i>not</i> return an independent copy of the stream, but instead * retains it. This is so that the stream can be used as a key for a * dictionary, so context can be associated with a stream. Using a * stream in more than one thread at the same time is not thread-safe, * even if copy was called to create one "instance" for every thread! * * \note If you want to subclass this, override * \ref lowlevelReadIntoBuffer:length:, \ref lowlevelWriteBuffer:length: * and \ref lowlevelIsAtEndOfStream, but nothing else, as those are are * the methods that do the actual work. OFStream uses those for all other * methods and does all the caching and other stuff for you. If you * override these methods without the lowlevel prefix, you <i>will</i> * break caching and get broken results! */ @interface OFStream: OFObject <OFCopying> { char *cache; char *writeBuffer; size_t cacheLength, writeBufferLength; BOOL writeBufferEnabled; |
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77 78 79 80 81 82 83 | - (BOOL)isAtEndOfStream; /** * \brief Reads <i>at most</i> size bytes from the stream into a buffer. * * On network streams, this might read less than the specified number of bytes. * If you want to read exactly the specified number of bytes, use | | | | | | | | | | | 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 | - (BOOL)isAtEndOfStream; /** * \brief Reads <i>at most</i> size bytes from the stream into a buffer. * * On network streams, this might read less than the specified number of bytes. * If you want to read exactly the specified number of bytes, use * \ref readIntoBuffer:exactLength:. Note that a read can even return 0 bytes - * this does not necessarily mean that the stream ended, so you still need to * check \ref isAtEndOfStream. * * \param buffer The buffer into which the data is read * \param length The length of the data that should be read at most. * The buffer <i>must</i> be at least this big! * \return The number of bytes read */ - (size_t)readIntoBuffer: (void*)buffer length: (size_t)length; /** * \brief Reads exactly the specified length bytes from the stream into a * buffer. * * Unlike \ref readIntoBuffer:length:, this method does not return when less * than the specified length has been read - instead, it waits until it got * exactly the specified length. * * \warning Only call this when you know that specified amount of data is * available! Otherwise you will get an exception! * * \param buffer The buffer into which the data is read * \param length The length of the data that should be read. * The buffer <i>must</i> be <i>exactly</i> this big! */ - (void)readIntoBuffer: (void*)buffer exactLength: (size_t)length; /** * \brief Asyncronously reads <i>at most</i> size bytes from the stream into a * buffer. * * On network streams, this might read less than the specified number of bytes. * If you want to read exactly the specified number of bytes, use * \ref asyncReadIntoBuffer:exactLength:block:. Note that a read can even * return 0 bytes - this does not necessarily mean that the stream ended, so * you still need to check \ref isAtEndOfStream. * * \param buffer The buffer into which the data is read. * The buffer must not be free'd before the async read completed! * \param length The length of the data that should be read at most. * The buffer <i>must</i> be at least this big! * \param target The target on which the selector should be called when the * data has been received. If the method returns YES, it will be |
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140 141 142 143 144 145 146 | target: (id)target selector: (SEL)selector; /** * \brief Asyncronously reads exactly the specified length bytes from the * stream into a buffer. * | | | 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 | target: (id)target selector: (SEL)selector; /** * \brief Asyncronously reads exactly the specified length bytes from the * stream into a buffer. * * Unlike \ref asyncReadIntoBuffer:length:block, this method does not call the * method when less than the specified length has been read - instead, it waits * until it got exactly the specified length, the stream has ended or an * exception occurred. * * \param buffer The buffer into which the data is read * \param length The length of the data that should be read. * The buffer <i>must</i> be <i>exactly</i> this big! |
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170 171 172 173 174 175 176 | #ifdef OF_HAVE_BLOCKS /** * \brief Asyncronously reads <i>at most</i> size bytes from the stream into a * buffer. * * On network streams, this might read less than the specified number of bytes. * If you want to read exactly the specified number of bytes, use | | | | | | 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 | #ifdef OF_HAVE_BLOCKS /** * \brief Asyncronously reads <i>at most</i> size bytes from the stream into a * buffer. * * On network streams, this might read less than the specified number of bytes. * If you want to read exactly the specified number of bytes, use * \ref asyncReadIntoBuffer:exactLength:block:. Note that a read can even * return 0 bytes - this does not necessarily mean that the stream ended, so * you still need to check \ref isAtEndOfStream. * * \param buffer The buffer into which the data is read. * The buffer must not be free'd before the async read completed! * \param length The length of the data that should be read at most. * The buffer <i>must</i> be at least this big! * \param block The block to call when the data has been received. * If the block returns YES, it will be called again with the same * buffer and maximum length when more data has been received. If * you want the next block in the queue to handle the data * received next, you need to return NO from the block. */ - (void)asyncReadIntoBuffer: (void*)buffer length: (size_t)length block: (of_stream_async_read_block_t)block; /** * \brief Asyncronously reads exactly the specified length bytes from the * stream into a buffer. * * Unlike \ref asyncReadIntoBuffer:length:block, this method does not invoke the * block when less than the specified length has been read - instead, it waits * until it got exactly the specified length, the stream has ended or an * exception occurred. * * \param buffer The buffer into which the data is read * \param length The length of the data that should be read. * The buffer <i>must</i> be <i>exactly</i> this big! |
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278 279 280 281 282 283 284 | /** * \brief Reads the specified number of uint16_ts from the stream which are * encoded in big endian. * * \warning Only call this when you know that enough data is available! * Otherwise you will get an exception! * | < > | < > | < > | < > | < > | | 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 | /** * \brief Reads the specified number of uint16_ts from the stream which are * encoded in big endian. * * \warning Only call this when you know that enough data is available! * Otherwise you will get an exception! * * \param buffer A buffer of sufficient size to store the specified number of * uint16_ts * \param count The number of uint16_ts to read * \return The number of bytes read */ - (size_t)readBigEndianInt16sIntoBuffer: (uint16_t*)buffer count: (size_t)count; /** * \brief Reads the specified number of uint32_ts from the stream which are * encoded in big endian. * * \warning Only call this when you know that enough data is available! * Otherwise you will get an exception! * * \param buffer A buffer of sufficient size to store the specified number of * uint32_ts * \param count The number of uint32_ts to read * \return The number of bytes read */ - (size_t)readBigEndianInt32sIntoBuffer: (uint32_t*)buffer count: (size_t)count; /** * \brief Reads the specified number of uint64_ts from the stream which are * encoded in big endian. * * \warning Only call this when you know that enough data is available! * Otherwise you will get an exception! * * \param buffer A buffer of sufficient size to store the specified number of * uint64_ts * \param count The number of uint64_ts to read * \return The number of bytes read */ - (size_t)readBigEndianInt64sIntoBuffer: (uint64_t*)buffer count: (size_t)count; /** * \brief Reads the specified number of floats from the stream which are encoded * in big endian. * * \warning Only call this when you know that enough data is available! * Otherwise you will get an exception! * * \param buffer A buffer of sufficient size to store the specified number of * floats * \param count The number of floats to read * \return The number of bytes read */ - (size_t)readBigEndianFloatsIntoBuffer: (float*)buffer count: (size_t)count; /** * \brief Reads the specified number of doubles from the stream which are * encoded in big endian. * * \warning Only call this when you know that enough data is available! * Otherwise you will get an exception! * * \param buffer A buffer of sufficient size to store the specified number of * doubles * \param count The number of doubles to read * \return The number of bytes read */ - (size_t)readBigEndianDoublesIntoBuffer: (double*)buffer count: (size_t)count; /** * \brief Reads a uint16_t from the stream which is encoded in little endian. * * \warning Only call this when you know that enough data is available! * Otherwise you will get an exception! * |
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403 404 405 406 407 408 409 | /** * \brief Reads the specified number of uint16_ts from the stream which are * encoded in little endian. * * \warning Only call this when you know that enough data is available! * Otherwise you will get an exception! * | < > | < > | < > | < > | < > | | | | | | | 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 | /** * \brief Reads the specified number of uint16_ts from the stream which are * encoded in little endian. * * \warning Only call this when you know that enough data is available! * Otherwise you will get an exception! * * \param buffer A buffer of sufficient size to store the specified number of * uint16_ts * \param count The number of uint16_ts to read * \return The number of bytes read */ - (size_t)readLittleEndianInt16sIntoBuffer: (uint16_t*)buffer count: (size_t)count; /** * \brief Reads the specified number of uint32_ts from the stream which are * encoded in little endian. * * \warning Only call this when you know that enough data is available! * Otherwise you will get an exception! * * \param buffer A buffer of sufficient size to store the specified number of * uint32_ts * \param count The number of uint32_ts to read * \return The number of bytes read */ - (size_t)readLittleEndianInt32sIntoBuffer: (uint32_t*)buffer count: (size_t)count; /** * \brief Reads the specified number of uint64_ts from the stream which are * encoded in little endian. * * \warning Only call this when you know that enough data is available! * Otherwise you will get an exception! * * \param buffer A buffer of sufficient size to store the specified number of * uint64_ts * \param count The number of uint64_ts to read * \return The number of bytes read */ - (size_t)readLittleEndianInt64sIntoBuffer: (uint64_t*)buffer count: (size_t)count; /** * \brief Reads the specified number of floats from the stream which are * encoded in little endian. * * \warning Only call this when you know that enough data is available! * Otherwise you will get an exception! * * \param buffer A buffer of sufficient size to store the specified number of * floats * \param count The number of floats to read * \return The number of bytes read */ - (size_t)readLittleEndianFloatsIntoBuffer: (float*)buffer count: (size_t)count; /** * \brief Reads the specified number of doubles from the stream which are * encoded in little endian. * * \warning Only call this when you know that enough data is available! * Otherwise you will get an exception! * * \param buffer A buffer of sufficient size to store the specified number of * doubles * \param count The number of doubles to read * \return The number of bytes read */ - (size_t)readLittleEndianDoublesIntoBuffer: (double*)buffer count: (size_t)count; /** * \brief Reads the specified number of items with an item size of 1 from the * stream and returns them in an OFDataArray. * * \warning Only call this when you know that enough data is available! * Otherwise you will get an exception! * * \param size The number of items to read * \return An OFDataArray with count items. */ - (OFDataArray*)readDataArrayWithSize: (size_t)size; /** * \brief Reads the specified number of items with the specified item size from * the stream and returns them in an OFDataArray. * * \warning Only call this when you know that enough data is available! * Otherwise you will get an exception! * * \param itemSize The size of each item * \param count The number of items to read * \return An OFDataArray with count items. */ - (OFDataArray*)readDataArrayWithItemSize: (size_t)itemSize count: (size_t)count; /** * \brief Returns an OFDataArray with all the remaining data of the stream. * * \return An OFDataArray with an item size of 1 with all the data of the * stream until the end of the stream is reached. */ |
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628 629 630 631 632 633 634 | * \return The line that was read, autoreleased, or nil if the line is not * complete yet */ - (OFString*)tryReadLine; /** * \brief Tries to read a line from the stream with the specified encoding (see | | | | 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 | * \return The line that was read, autoreleased, or nil if the line is not * complete yet */ - (OFString*)tryReadLine; /** * \brief Tries to read a line from the stream with the specified encoding (see * \ref readLineWithEncoding:) and returns nil if no complete line has * been received yet. * * \param encoding The encoding used by the stream * \return The line that was read, autoreleased, or nil if the line is not * complete yet */ - (OFString*)tryReadLineWithEncoding: (of_string_encoding_t)encoding; |
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661 662 663 664 665 666 667 | * stream has been reached. */ - (OFString*)readTillDelimiter: (OFString*)delimiter encoding: (of_string_encoding_t)encoding; /** * \brief Tries to reads until the specified string or \\0 is found or the end | | | | | | 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 | * stream has been reached. */ - (OFString*)readTillDelimiter: (OFString*)delimiter encoding: (of_string_encoding_t)encoding; /** * \brief Tries to reads until the specified string or \\0 is found or the end * of stream (see \ref readTillDelimiter:) and returns nil if not enough * data has been received yet. * * \param delimiter The delimiter * \return The line that was read, autoreleased, or nil if the end of the * stream has been reached. */ - (OFString*)tryReadTillDelimiter: (OFString*)delimiter; /** * \brief Tries to read until the specified string or \\0 is found or the end * of stream occurs (see \ref readTillDelimiterWithEncoding:) and * returns nil if not enough data has been received yet. * * \param delimiter The delimiter * \param encoding The encoding used by the stream * \return The line that was read, autoreleased, or nil if the end of the * stream has been reached. */ - (OFString*)tryReadTillDelimiter: (OFString*)delimiter |
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757 758 759 760 761 762 763 | */ - (void)writeBigEndianDouble: (double)double_; /** * \brief Writes the specified number of uint16_ts into the stream, encoded in * big endian. * | < > | < > | < > | < > | < > | | 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 | */ - (void)writeBigEndianDouble: (double)double_; /** * \brief Writes the specified number of uint16_ts into the stream, encoded in * big endian. * * \param buffer The buffer from which the data is written to the stream after * it has been byte swapped if necessary * \param count The number of uint16_ts to write * \return The number of bytes written to the stream */ - (size_t)writeBigEndianInt16s: (const uint16_t*)buffer count: (size_t)count; /** * \brief Writes the specified number of uint32_ts into the stream, encoded in * big endian. * * \param buffer The buffer from which the data is written to the stream after * it has been byte swapped if necessary * \param count The number of uint32_ts to write * \return The number of bytes written to the stream */ - (size_t)writeBigEndianInt32s: (const uint32_t*)buffer count: (size_t)count; /** * \brief Writes the specified number of uint64_ts into the stream, encoded in * big endian. * * \param buffer The buffer from which the data is written to the stream after * it has been byte swapped if necessary * \param count The number of uint64_ts to write * \return The number of bytes written to the stream */ - (size_t)writeBigEndianInt64s: (const uint64_t*)buffer count: (size_t)count; /** * \brief Writes the specified number of floats into the stream, encoded in big * endian. * * \param buffer The buffer from which the data is written to the stream after * it has been byte swapped if necessary * \param count The number of floats to write * \return The number of bytes written to the stream */ - (size_t)writeBigEndianFloats: (const float*)buffer count: (size_t)count; /** * \brief Writes the specified number of doubles into the stream, encoded in * big endian. * * \param buffer The buffer from which the data is written to the stream after * it has been byte swapped if necessary * \param count The number of doubles to write * \return The number of bytes written to the stream */ - (size_t)writeBigEndianDoubles: (const double*)buffer count: (size_t)count; /** * \brief Writes a uint16_t into the stream, encoded in little endian. * * \param int16 A uint16_t */ - (void)writeLittleEndianInt16: (uint16_t)int16; |
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852 853 854 855 856 857 858 | */ - (void)writeLittleEndianDouble: (double)double_; /** * \brief Writes the specified number of uint16_ts into the stream, encoded in * little endian. * | < > | | | < > | < > | < > | | 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 | */ - (void)writeLittleEndianDouble: (double)double_; /** * \brief Writes the specified number of uint16_ts into the stream, encoded in * little endian. * * \param buffer The buffer from which the data is written to the stream after * it has been byte swapped if necessary * \param count The number of uint16_ts to write * \return The number of bytes written to the stream */ - (size_t)writeLittleEndianInt16s: (const uint16_t*)buffer count: (size_t)count; /** * \brief Writes the specified number of uint32_ts into the stream, encoded in * little endian. * * \param count The number of uint32_ts to write * \param buffer The buffer from which the data is written to the stream after * it has been byte swapped if necessary * \return The number of bytes written to the stream */ - (size_t)writeLittleEndianInt32s: (const uint32_t*)buffer count: (size_t)count; /** * \brief Writes the specified number of uint64_ts into the stream, encoded in * little endian. * * \param buffer The buffer from which the data is written to the stream after * it has been byte swapped if necessary * \param count The number of uint64_ts to write * \return The number of bytes written to the stream */ - (size_t)writeLittleEndianInt64s: (const uint64_t*)buffer count: (size_t)count; /** * \brief Writes the specified number of floats into the stream, encoded in * little endian. * * \param buffer The buffer from which the data is written to the stream after * it has been byte swapped if necessary * \param count The number of floats to write * \return The number of bytes written to the stream */ - (size_t)writeLittleEndianFloats: (const float*)buffer count: (size_t)count; /** * \brief Writes the specified number of doubles into the stream, encoded in * little endian. * * \param buffer The buffer from which the data is written to the stream after * it has been byte swapped if necessary * \param count The number of doubles to write * \return The number of bytes written to the stream */ - (size_t)writeLittleEndianDoubles: (const double*)buffer count: (size_t)count; /** * \brief Writes from an OFDataArray into the stream. * * \param dataArray The OFDataArray to write into the stream * \return The number of bytes written */ |
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