Chiebot-Mirror/zlib - zlib - Gitea: Git with a cup of tea

Commit Graph

Author	SHA1	Message	Date
Mark Adler	47cb412957	Add tables for crc32_combine(), to speed it up by a factor of 200.	6 years ago
Mark Adler	921d81b2a8	Fix the zran.c example to work on a multiple-member gzip file.	6 years ago
Mark Adler	354fa43d12	Add gznorm.c example, which normalizes gzip files.	6 years ago
Mark Adler	cd16ff0b3a	Show all the codes for the maximum tables size in enough.c.	6 years ago
Mark Adler	d00c147f53	Clarify that prefix codes are counted in enough.c. There is no assurance that all prefix codes are reachable as optimal Huffman codes for the numbers of symbols encountered in a deflate block. This code considers all possible prefix codes, which might be a larger set than all possible Huffman codes, depending on the constraints.	6 years ago
Mark Adler	5b1381006b	Use inline function instead of macro for index in enough.c.	6 years ago
Mark Adler	8ba2cdb6bd	Clean up code style in enough.c, update version.	7 years ago
Mark Adler	4c14b51587	Use a macro for the printf format of big_t in enough.c.	7 years ago
Mark Adler	194e558efe	Use a structure to make globals in enough.c evident.	7 years ago
Mark Adler	4346a16853	Assure that the number of bits for deflatePrime() is valid.	7 years ago
Mark Adler	5c44459c3b	Fix a bug that can crash deflate on some input when using Z_FIXED. This bug was reported by Danilo Ramos of Eideticom, Inc. It has lain in wait 13 years before being found! The bug was introduced in zlib 1.2.2.2, with the addition of the Z_FIXED option. That option forces the use of fixed Huffman codes. For rare inputs with a large number of distant matches, the pending buffer into which the compressed data is written can overwrite the distance symbol table which it overlays. That results in corrupted output due to invalid distances, and can result in out-of-bound accesses, crashing the application. The fix here combines the distance buffer and literal/length buffers into a single symbol buffer. Now three bytes of pending buffer space are opened up for each literal or length/distance pair consumed, instead of the previous two bytes. This assures that the pending buffer cannot overwrite the symbol table, since the maximum fixed code compressed length/distance is 31 bits, and since there are four bytes of pending space for every three bytes of symbol space.	7 years ago
Mark Adler	e99813dbfe	Correct the initialization requirements for deflateInit2().	7 years ago
Mark Adler	bf88202e31	Emphasize the need to continue decompressing gzip members.	7 years ago
Mark Adler	ba9df2111e	Add legal disclaimer to README.	7 years ago
Mark Adler	c376a417a7	Fix deflateEnd() to not report an error at start of raw deflate.	7 years ago
Mark Adler	288f108031	Remove old assembler code in which bugs have manifested. In addition, there is not sufficient gain from the inflate assembler code to warrant its inclusion.	7 years ago
Mark Adler	a577351394	Make the names in functions declarations identical to definitions.	7 years ago
Mark Adler	723e928b84	Avoid an undefined behavior of memcpy() in _tr_stored_block(). Allegedly the behavior of memcpy() is undefined if the source pointer is NULL, even if the number of bytes to copy is zero.	7 years ago
Mark Adler	b25d5fcdcf	Avoid undefined behaviors of memcpy() in gz*printf().	7 years ago
Mark Adler	ae49d1472e	Avoid an undefined behavior of memcpy() in gzappend().	7 years ago
Mark Adler	3c46f5ddb5	Avoid the use of ptrdiff_t. This isn't the right type anyway to assure that it contains a pointer. That type would be intptr_t or uintptr_t. However the C99 standard says that those types are optional, so their use would not be portable. This commit simply uses size_t or whatever configure decided to use for size_t. That would be the same length as ptrdiff_t, and so will work just as well. The code checks to see if the length of the type used is the same as the length of a void pointer, so there is already protection against the use of the wrong type. The use of size_t (or ptrdiff_t) will almost always work, as all modern architectures have an array size that is the same as the pointer size. Only old segmented architectures would have to fall back to the slower CRC-32 calculation, where the amount of memory that can be accessed is larger than the maximum array size.	8 years ago
Mark Adler	44e8ac810d	Handle case where inflateSync used when header never processed. If zlib and/or gzip header processing was requested, but a header was never provided and inflateSync was used successfully, then the inflate state would be inconsistent, trying to compute a check value but with no flags set. This commit sets the inflate mode to raw in this case, since there is no other assumption that can be made if a header was requested but never seen.	8 years ago
Mark Adler	89245c0a84	Don't compute check value for raw inflate if asked to validate.	8 years ago
Mark Adler	be5e3647c4	Add address checking in clang to -w option of configure.	8 years ago
Mark Adler	90287635ef	Return an error if the gzputs string length can't fit in an int.	8 years ago
Mark Adler	60a5ecc62b	Small speedup to inflate [psumbera]. Seeing a few percent speedup by using a pointer instead of an assigned structure. This seems to help the compiler to optimize better.	8 years ago
Mark Adler	e1f1a3a146	Update use of errno for newer Windows CE versions.	8 years ago
Mark Adler	793ad7f559	Avoid some conversion warnings in gzread.c and gzwrite.c.	8 years ago
Mark Adler	e00a2bd392	Have Makefile return non-zero error code on test failure.	8 years ago
Mark Adler	a362293745	Avoid a conversion error in gzseek when off_t type too small. This is a problem in the odd case that the second argument of LSEEK is a larger type than off_t. Apparently MinGW defines off_t to be 32 bits, but _lseeki64 has a 64-bit second argument. Also undo a previous commit to permit MinGW to use _lseeki64.	8 years ago
Mark Adler	38e8ce32af	Fix CLEAR_HASH macro to be usable as a single statement. As it is used in deflateParams().	8 years ago
Mark Adler	8ba393e70d	Fix bug when window full in deflate_stored().	8 years ago
Mark Adler	2d80d3f6b5	Limit hash table inserts after switch from stored deflate. This limits hash table inserts to the available data in the window and to the sliding window size in deflate_stored(). The hash table inserts are deferred until deflateParams() switches to a non-zero compression level.	8 years ago
Mark Adler	f9694097dd	Permit a deflateParams() parameter change as soon as possible. This commit allows a parameter change even if the input data has not all been compressed and copied to the application output buffer, so long as all of the input data has been compressed to the internal pending output buffer. This also allows an immediate deflateParams change so long as there have been no deflate calls since initialization or reset.	8 years ago
Mark Adler	5ff989033e	Cygwin does not have _wopen(), so do not create gzopen_w() there.	8 years ago
Mark Adler	7d60b86782	Change version number to 1.2.11.1.	8 years ago
Mark Adler	cacf7f1d4e	zlib 1.2.11	8 years ago
Mark Adler	cbbd20302c	Permit immediate deflateParams changes before any deflate input. This permits deflateParams to change the strategy and level right after deflateInit, without having to wait until a header has been written. The parameters can be changed immediately up until the first deflate call that consumes any input data.	8 years ago
Mark Adler	7d9c9d410a	Update high water mark in deflate_stored. This avoids unnecessary filling of bytes in the sliding window buffer when switching from level zero to a non-zero level. This also provides a consistent indication of deflate having taken input for a later commit ...	8 years ago
Mark Adler	37ed2112a1	Update vestigial comment from very old Info-ZIP deflate.	8 years ago
Mark Adler	4c7c907683	Fix deflate stored bug when pulling last block from window. And some cosmetic cleanups.	8 years ago
Mark Adler	74d2696d87	Update location of Visual Studio project files.	8 years ago
Mark Adler	c38a2603ce	Delete user-specific Visual Studio project files.	8 years ago
Mark Adler	11ceaed751	Change version number to 1.2.10.1.	8 years ago
Mark Adler	4a090adef8	zlib 1.2.10	8 years ago
Mark Adler	e13def040e	Fix compilation with --solo and --debug combined. However this ends up not really being solo, since it has to include external libraries.	8 years ago
Mark Adler	1e3bccd496	Add warnings when compiling with assembler code. There have been many reports of bugs in the assembler codes intended to speed up deflate and inflate. They are third-party contributions in contrib, and so are not supported by the zlib maintainers.	8 years ago
Mark Adler	c7d77756d0	Remove files to be installed before copying them in Makefile.in.	8 years ago
Mark Adler	0b5c158cc7	Fix bug in gzwrite.c that produced corrupt gzip files.	8 years ago
Mark Adler	bc5503b224	Fix bug in deflate_stored() for zero-length input.	8 years ago

1 2 3 4 5 ...

455 Commits (47cb41295751ee1b1b7e0acbfb847ea24324d5aa) All Branches Search

455 Commits (47cb41295751ee1b1b7e0acbfb847ea24324d5aa)

All Branches