723 lines
35 KiB
Plaintext
723 lines
35 KiB
Plaintext
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ChangeLog file for zlib
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Changes in 1.2.1 (17 November 2003)
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- Remove a tab in contrib/gzappend/gzappend.c
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- Update some interfaces in contrib for new zlib functions
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- Update zlib version number in some contrib entries
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- Add Windows CE definition for ptrdiff_t in zutil.h [Mai, Truta]
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- Support shared libraries on Hurd and KFreeBSD [Brown]
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- Fix error in NO_DIVIDE option of adler32.c
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Changes in 1.2.0.8 (4 November 2003)
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- Update version in contrib/delphi/ZLib.pas and contrib/pascal/zlibpas.pas
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- Add experimental NO_DIVIDE #define in adler32.c
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- Possibly faster on some processors (let me know if it is)
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- Correct Z_BLOCK to not return on first inflate call if no wrap
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- Fix strm->data_type on inflate() return to correctly indicate EOB
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- Add deflatePrime() function for appending in the middle of a byte
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- Add contrib/gzappend for an example of appending to a stream
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- Update win32/DLL_FAQ.txt [Truta]
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- Delete Turbo C comment in README [Truta]
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- Improve some indentation in zconf.h [Truta]
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- Fix infinite loop on bad input in configure script [Church]
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- Fix gzeof() for concatenated gzip files [Johnson]
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- Add example to contrib/visual-basic.txt [Michael B.]
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- Add -p to mkdir's in Makefile.in [vda]
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- Fix configure to properly detect presence or lack of printf functions
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- Add AS400 support [Monnerat]
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- Add a little Cygwin support [Wilson]
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Changes in 1.2.0.7 (21 September 2003)
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- Correct some debug formats in contrib/infback9
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- Cast a type in a debug statement in trees.c
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- Change search and replace delimiter in configure from % to # [Beebe]
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- Update contrib/untgz to 0.2 with various fixes [Truta]
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- Add build support for Amiga [Nikl]
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- Remove some directories in old that have been updated to 1.2
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- Add dylib building for Mac OS X in configure and Makefile.in
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- Remove old distribution stuff from Makefile
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- Update README to point to DLL_FAQ.txt, and add comment on Mac OS X
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- Update links in README
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Changes in 1.2.0.6 (13 September 2003)
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- Minor FAQ updates
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- Update contrib/minizip to 1.00 [Vollant]
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- Remove test of gz functions in example.c when GZ_COMPRESS defined [Truta]
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- Update POSTINC comment for 68060 [Nikl]
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- Add contrib/infback9 with deflate64 decoding (unsupported)
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- For MVS define NO_vsnprintf and undefine FAR [van Burik]
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- Add pragma for fdopen on MVS [van Burik]
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Changes in 1.2.0.5 (8 September 2003)
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- Add OF to inflateBackEnd() declaration in zlib.h
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- Remember start when using gzdopen in the middle of a file
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- Use internal off_t counters in gz* functions to properly handle seeks
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- Perform more rigorous check for distance-too-far in inffast.c
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- Add Z_BLOCK flush option to return from inflate at block boundary
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- Set strm->data_type on return from inflate
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- Indicate bits unused, if at block boundary, and if in last block
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- Replace size_t with ptrdiff_t in crc32.c, and check for correct size
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- Add condition so old NO_DEFLATE define still works for compatibility
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- FAQ update regarding the Windows DLL [Truta]
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- INDEX update: add qnx entry, remove aix entry [Truta]
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- Install zlib.3 into mandir [Wilson]
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- Move contrib/zlib_dll_FAQ.txt to win32/DLL_FAQ.txt; update [Truta]
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- Adapt the zlib interface to the new DLL convention guidelines [Truta]
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- Introduce ZLIB_WINAPI macro to allow the export of functions using
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the WINAPI calling convention, for Visual Basic [Vollant, Truta]
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- Update msdos and win32 scripts and makefiles [Truta]
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- Export symbols by name, not by ordinal, in win32/zlib.def [Truta]
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- Add contrib/ada [Anisimkov]
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- Move asm files from contrib/vstudio/vc70_32 to contrib/asm386 [Truta]
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- Rename contrib/asm386 to contrib/masmx86 [Truta, Vollant]
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- Add contrib/masm686 [Truta]
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- Fix offsets in contrib/inflate86 and contrib/masmx86/inffas32.asm
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[Truta, Vollant]
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- Update contrib/delphi; rename to contrib/pascal; add example [Truta]
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- Remove contrib/delphi2; add a new contrib/delphi [Truta]
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- Avoid inclusion of the nonstandard <memory.h> in contrib/iostream,
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and fix some method prototypes [Truta]
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- Fix the ZCR_SEED2 constant to avoid warnings in contrib/minizip
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[Truta]
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- Avoid the use of backslash (\) in contrib/minizip [Vollant]
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- Fix file time handling in contrib/untgz; update makefiles [Truta]
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- Update contrib/vstudio/vc70_32 to comply with the new DLL guidelines
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[Vollant]
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- Remove contrib/vstudio/vc15_16 [Vollant]
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- Rename contrib/vstudio/vc70_32 to contrib/vstudio/vc7 [Truta]
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- Update README.contrib [Truta]
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- Invert the assignment order of match_head and s->prev[...] in
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INSERT_STRING [Truta]
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- Compare TOO_FAR with 32767 instead of 32768, to avoid 16-bit warnings
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[Truta]
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- Compare function pointers with 0, not with NULL or Z_NULL [Truta]
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- Fix prototype of syncsearch in inflate.c [Truta]
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- Introduce ASMINF macro to be enabled when using an ASM implementation
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of inflate_fast [Truta]
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- Change NO_DEFLATE to NO_GZCOMPRESS [Truta]
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- Modify test_gzio in example.c to take a single file name as a
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parameter [Truta]
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- Exit the example.c program if gzopen fails [Truta]
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- Add type casts around strlen in example.c [Truta]
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- Remove casting to sizeof in minigzip.c; give a proper type
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to the variable compared with SUFFIX_LEN [Truta]
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- Update definitions of STDC and STDC99 in zconf.h [Truta]
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- Synchronize zconf.h with the new Windows DLL interface [Truta]
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- Use SYS16BIT instead of __32BIT__ to distinguish between
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16- and 32-bit platforms [Truta]
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- Use far memory allocators in small 16-bit memory models for
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Turbo C [Truta]
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- Add info about the use of ASMV, ASMINF and ZLIB_WINAPI in
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zlibCompileFlags [Truta]
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- Cygwin has vsnprintf [Wilson]
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- In Windows16, OS_CODE is 0, as in MSDOS [Truta]
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- In Cygwin, OS_CODE is 3 (Unix), not 11 (Windows32) [Wilson]
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Changes in 1.2.0.4 (10 August 2003)
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- Minor FAQ updates
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- Be more strict when checking inflateInit2's windowBits parameter
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- Change NO_GUNZIP compile option to NO_GZIP to cover deflate as well
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- Add gzip wrapper option to deflateInit2 using windowBits
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- Add updated QNX rule in configure and qnx directory [Bonnefoy]
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- Make inflate distance-too-far checks more rigorous
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- Clean up FAR usage in inflate
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- Add casting to sizeof() in gzio.c and minigzip.c
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Changes in 1.2.0.3 (19 July 2003)
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- Fix silly error in gzungetc() implementation [Vollant]
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- Update contrib/minizip and contrib/vstudio [Vollant]
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- Fix printf format in example.c
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- Correct cdecl support in zconf.in.h [Anisimkov]
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- Minor FAQ updates
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Changes in 1.2.0.2 (13 July 2003)
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- Add ZLIB_VERNUM in zlib.h for numerical preprocessor comparisons
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- Attempt to avoid warnings in crc32.c for pointer-int conversion
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- Add AIX to configure, remove aix directory [Bakker]
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- Add some casts to minigzip.c
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- Improve checking after insecure sprintf() or vsprintf() calls
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- Remove #elif's from crc32.c
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- Change leave label to inf_leave in inflate.c and infback.c to avoid
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library conflicts
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- Remove inflate gzip decoding by default--only enable gzip decoding by
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special request for stricter backward compatibility
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- Add zlibCompileFlags() function to return compilation information
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- More typecasting in deflate.c to avoid warnings
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- Remove leading underscore from _Capital #defines [Truta]
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- Fix configure to link shared library when testing
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- Add some Windows CE target adjustments [Mai]
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- Remove #define ZLIB_DLL in zconf.h [Vollant]
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- Add zlib.3 [Rodgers]
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- Update RFC URL in deflate.c and algorithm.txt [Mai]
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- Add zlib_dll_FAQ.txt to contrib [Truta]
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- Add UL to some constants [Truta]
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- Update minizip and vstudio [Vollant]
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- Remove vestigial NEED_DUMMY_RETURN from zconf.in.h
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- Expand use of NO_DUMMY_DECL to avoid all dummy structures
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- Added iostream3 to contrib [Schwardt]
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- Replace rewind() with fseek() for WinCE [Truta]
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- Improve setting of zlib format compression level flags
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- Report 0 for huffman and rle strategies and for level == 0 or 1
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- Report 2 only for level == 6
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- Only deal with 64K limit when necessary at compile time [Truta]
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- Allow TOO_FAR check to be turned off at compile time [Truta]
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- Add gzclearerr() function [Souza]
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- Add gzungetc() function
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Changes in 1.2.0.1 (17 March 2003)
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- Add Z_RLE strategy for run-length encoding [Truta]
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- When Z_RLE requested, restrict matches to distance one
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- Update zlib.h, minigzip.c, gzopen(), gzdopen() for Z_RLE
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- Correct FASTEST compilation to allow level == 0
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- Clean up what gets compiled for FASTEST
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- Incorporate changes to zconf.in.h [Vollant]
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- Refine detection of Turbo C need for dummy returns
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- Refine ZLIB_DLL compilation
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- Include additional header file on VMS for off_t typedef
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- Try to use _vsnprintf where it supplants vsprintf [Vollant]
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- Add some casts in inffast.c
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- Enchance comments in zlib.h on what happens if gzprintf() tries to
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write more than 4095 bytes before compression
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- Remove unused state from inflateBackEnd()
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- Remove exit(0) from minigzip.c, example.c
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- Get rid of all those darn tabs
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- Add "check" target to Makefile.in that does the same thing as "test"
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- Add "mostlyclean" and "maintainer-clean" targets to Makefile.in
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- Update contrib/inflate86 [Anderson]
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- Update contrib/testzlib, contrib/vstudio, contrib/minizip [Vollant]
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- Add msdos and win32 directories with makefiles [Truta]
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- More additions and improvements to the FAQ
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Changes in 1.2.0 (9 March 2003)
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- New and improved inflate code
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- About 20% faster
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- Does not allocate 32K window unless and until needed
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- Automatically detects and decompresses gzip streams
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- Raw inflate no longer needs an extra dummy byte at end
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- Added inflateBack functions using a callback interface--even faster
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than inflate, useful for file utilities (gzip, zip)
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- Added inflateCopy() function to record state for random access on
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externally generated deflate streams (e.g. in gzip files)
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- More readable code (I hope)
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- New and improved crc32()
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- About 50% faster, thanks to suggestions from Rodney Brown
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- Add deflateBound() and compressBound() functions
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- Fix memory leak in deflateInit2()
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- Permit setting dictionary for raw deflate (for parallel deflate)
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- Fix const declaration for gzwrite()
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- Check for some malloc() failures in gzio.c
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- Fix bug in gzopen() on single-byte file 0x1f
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- Fix bug in gzread() on concatenated file with 0x1f at end of buffer
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and next buffer doesn't start with 0x8b
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- Fix uncompress() to return Z_DATA_ERROR on truncated input
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- Free memory at end of example.c
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- Remove MAX #define in trees.c (conflicted with some libraries)
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- Fix static const's in deflate.c, gzio.c, and zutil.[ch]
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- Declare malloc() and free() in gzio.c if STDC not defined
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- Use malloc() instead of calloc() in zutil.c if int big enough
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- Define STDC for AIX
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- Add aix/ with approach for compiling shared library on AIX
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- Add HP-UX support for shared libraries in configure
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- Add OpenUNIX support for shared libraries in configure
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- Use $cc instead of gcc to build shared library
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- Make prefix directory if needed when installing
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- Correct Macintosh avoidance of typedef Byte in zconf.h
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- Correct Turbo C memory allocation when under Linux
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- Use libz.a instead of -lz in Makefile (assure use of compiled library)
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- Update configure to check for snprintf or vsnprintf functions and their
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return value, warn during make if using an insecure function
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- Fix configure problem with compile-time knowledge of HAVE_UNISTD_H that
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is lost when library is used--resolution is to build new zconf.h
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- Documentation improvements (in zlib.h):
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- Document raw deflate and inflate
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- Update RFCs URL
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- Point out that zlib and gzip formats are different
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- Note that Z_BUF_ERROR is not fatal
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- Document string limit for gzprintf() and possible buffer overflow
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- Note requirement on avail_out when flushing
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- Note permitted values of flush parameter of inflate()
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- Add some FAQs (and even answers) to the FAQ
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- Add contrib/inflate86/ for x86 faster inflate
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- Add contrib/blast/ for PKWare Data Compression Library decompression
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- Add contrib/puff/ simple inflate for deflate format description
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Changes in 1.1.4 (11 March 2002)
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- ZFREE was repeated on same allocation on some error conditions.
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This creates a security problem described in
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http://www.zlib.org/advisory-2002-03-11.txt
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- Returned incorrect error (Z_MEM_ERROR) on some invalid data
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- Avoid accesses before window for invalid distances with inflate window
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less than 32K.
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- force windowBits > 8 to avoid a bug in the encoder for a window size
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of 256 bytes. (A complete fix will be available in 1.1.5).
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Changes in 1.1.3 (9 July 1998)
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- fix "an inflate input buffer bug that shows up on rare but persistent
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occasions" (Mark)
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- fix gzread and gztell for concatenated .gz files (Didier Le Botlan)
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- fix gzseek(..., SEEK_SET) in write mode
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- fix crc check after a gzeek (Frank Faubert)
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- fix miniunzip when the last entry in a zip file is itself a zip file
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(J Lillge)
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- add contrib/asm586 and contrib/asm686 (Brian Raiter)
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See http://www.muppetlabs.com/~breadbox/software/assembly.html
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- add support for Delphi 3 in contrib/delphi (Bob Dellaca)
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- add support for C++Builder 3 and Delphi 3 in contrib/delphi2 (Davide Moretti)
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- do not exit prematurely in untgz if 0 at start of block (Magnus Holmgren)
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- use macro EXTERN instead of extern to support DLL for BeOS (Sander Stoks)
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- added a FAQ file
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- Support gzdopen on Mac with Metrowerks (Jason Linhart)
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- Do not redefine Byte on Mac (Brad Pettit & Jason Linhart)
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- define SEEK_END too if SEEK_SET is not defined (Albert Chin-A-Young)
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- avoid some warnings with Borland C (Tom Tanner)
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- fix a problem in contrib/minizip/zip.c for 16-bit MSDOS (Gilles Vollant)
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- emulate utime() for WIN32 in contrib/untgz (Gilles Vollant)
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- allow several arguments to configure (Tim Mooney, Frodo Looijaard)
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- use libdir and includedir in Makefile.in (Tim Mooney)
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- support shared libraries on OSF1 V4 (Tim Mooney)
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- remove so_locations in "make clean" (Tim Mooney)
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- fix maketree.c compilation error (Glenn, Mark)
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- Python interface to zlib now in Python 1.5 (Jeremy Hylton)
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- new Makefile.riscos (Rich Walker)
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- initialize static descriptors in trees.c for embedded targets (Nick Smith)
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- use "foo-gz" in example.c for RISCOS and VMS (Nick Smith)
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- add the OS/2 files in Makefile.in too (Andrew Zabolotny)
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- fix fdopen and halloc macros for Microsoft C 6.0 (Tom Lane)
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- fix maketree.c to allow clean compilation of inffixed.h (Mark)
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- fix parameter check in deflateCopy (Gunther Nikl)
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- cleanup trees.c, use compressed_len only in debug mode (Christian Spieler)
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- Many portability patches by Christian Spieler:
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. zutil.c, zutil.h: added "const" for zmem*
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. Make_vms.com: fixed some typos
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. Make_vms.com: msdos/Makefile.*: removed zutil.h from some dependency lists
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. msdos/Makefile.msc: remove "default rtl link library" info from obj files
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. msdos/Makefile.*: use model-dependent name for the built zlib library
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. msdos/Makefile.emx, nt/Makefile.emx, nt/Makefile.gcc:
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new makefiles, for emx (DOS/OS2), emx&rsxnt and mingw32 (Windows 9x / NT)
|
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- use define instead of typedef for Bytef also for MSC small/medium (Tom Lane)
|
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- replace __far with _far for better portability (Christian Spieler, Tom Lane)
|
||
- fix test for errno.h in configure (Tim Newsham)
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||
|
||
Changes in 1.1.2 (19 March 98)
|
||
- added contrib/minzip, mini zip and unzip based on zlib (Gilles Vollant)
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||
See http://www.winimage.com/zLibDll/unzip.html
|
||
- preinitialize the inflate tables for fixed codes, to make the code
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||
completely thread safe (Mark)
|
||
- some simplifications and slight speed-up to the inflate code (Mark)
|
||
- fix gzeof on non-compressed files (Allan Schrum)
|
||
- add -std1 option in configure for OSF1 to fix gzprintf (Martin Mokrejs)
|
||
- use default value of 4K for Z_BUFSIZE for 16-bit MSDOS (Tim Wegner + Glenn)
|
||
- added os2/Makefile.def and os2/zlib.def (Andrew Zabolotny)
|
||
- add shared lib support for UNIX_SV4.2MP (MATSUURA Takanori)
|
||
- do not wrap extern "C" around system includes (Tom Lane)
|
||
- mention zlib binding for TCL in README (Andreas Kupries)
|
||
- added amiga/Makefile.pup for Amiga powerUP SAS/C PPC (Andreas Kleinert)
|
||
- allow "make install prefix=..." even after configure (Glenn Randers-Pehrson)
|
||
- allow "configure --prefix $HOME" (Tim Mooney)
|
||
- remove warnings in example.c and gzio.c (Glenn Randers-Pehrson)
|
||
- move Makefile.sas to amiga/Makefile.sas
|
||
|
||
Changes in 1.1.1 (27 Feb 98)
|
||
- fix macros _tr_tally_* in deflate.h for debug mode (Glenn Randers-Pehrson)
|
||
- remove block truncation heuristic which had very marginal effect for zlib
|
||
(smaller lit_bufsize than in gzip 1.2.4) and degraded a little the
|
||
compression ratio on some files. This also allows inlining _tr_tally for
|
||
matches in deflate_slow.
|
||
- added msdos/Makefile.w32 for WIN32 Microsoft Visual C++ (Bob Frazier)
|
||
|
||
Changes in 1.1.0 (24 Feb 98)
|
||
- do not return STREAM_END prematurely in inflate (John Bowler)
|
||
- revert to the zlib 1.0.8 inflate to avoid the gcc 2.8.0 bug (Jeremy Buhler)
|
||
- compile with -DFASTEST to get compression code optimized for speed only
|
||
- in minigzip, try mmap'ing the input file first (Miguel Albrecht)
|
||
- increase size of I/O buffers in minigzip.c and gzio.c (not a big gain
|
||
on Sun but significant on HP)
|
||
|
||
- add a pointer to experimental unzip library in README (Gilles Vollant)
|
||
- initialize variable gcc in configure (Chris Herborth)
|
||
|
||
Changes in 1.0.9 (17 Feb 1998)
|
||
- added gzputs and gzgets functions
|
||
- do not clear eof flag in gzseek (Mark Diekhans)
|
||
- fix gzseek for files in transparent mode (Mark Diekhans)
|
||
- do not assume that vsprintf returns the number of bytes written (Jens Krinke)
|
||
- replace EXPORT with ZEXPORT to avoid conflict with other programs
|
||
- added compress2 in zconf.h, zlib.def, zlib.dnt
|
||
- new asm code from Gilles Vollant in contrib/asm386
|
||
- simplify the inflate code (Mark):
|
||
. Replace ZALLOC's in huft_build() with single ZALLOC in inflate_blocks_new()
|
||
. ZALLOC the length list in inflate_trees_fixed() instead of using stack
|
||
. ZALLOC the value area for huft_build() instead of using stack
|
||
. Simplify Z_FINISH check in inflate()
|
||
|
||
- Avoid gcc 2.8.0 comparison bug a little differently than zlib 1.0.8
|
||
- in inftrees.c, avoid cc -O bug on HP (Farshid Elahi)
|
||
- in zconf.h move the ZLIB_DLL stuff earlier to avoid problems with
|
||
the declaration of FAR (Gilles VOllant)
|
||
- install libz.so* with mode 755 (executable) instead of 644 (Marc Lehmann)
|
||
- read_buf buf parameter of type Bytef* instead of charf*
|
||
- zmemcpy parameters are of type Bytef*, not charf* (Joseph Strout)
|
||
- do not redeclare unlink in minigzip.c for WIN32 (John Bowler)
|
||
- fix check for presence of directories in "make install" (Ian Willis)
|
||
|
||
Changes in 1.0.8 (27 Jan 1998)
|
||
- fixed offsets in contrib/asm386/gvmat32.asm (Gilles Vollant)
|
||
- fix gzgetc and gzputc for big endian systems (Markus Oberhumer)
|
||
- added compress2() to allow setting the compression level
|
||
- include sys/types.h to get off_t on some systems (Marc Lehmann & QingLong)
|
||
- use constant arrays for the static trees in trees.c instead of computing
|
||
them at run time (thanks to Ken Raeburn for this suggestion). To create
|
||
trees.h, compile with GEN_TREES_H and run "make test".
|
||
- check return code of example in "make test" and display result
|
||
- pass minigzip command line options to file_compress
|
||
- simplifying code of inflateSync to avoid gcc 2.8 bug
|
||
|
||
- support CC="gcc -Wall" in configure -s (QingLong)
|
||
- avoid a flush caused by ftell in gzopen for write mode (Ken Raeburn)
|
||
- fix test for shared library support to avoid compiler warnings
|
||
- zlib.lib -> zlib.dll in msdos/zlib.rc (Gilles Vollant)
|
||
- check for TARGET_OS_MAC in addition to MACOS (Brad Pettit)
|
||
- do not use fdopen for Metrowerks on Mac (Brad Pettit))
|
||
- add checks for gzputc and gzputc in example.c
|
||
- avoid warnings in gzio.c and deflate.c (Andreas Kleinert)
|
||
- use const for the CRC table (Ken Raeburn)
|
||
- fixed "make uninstall" for shared libraries
|
||
- use Tracev instead of Trace in infblock.c
|
||
- in example.c use correct compressed length for test_sync
|
||
- suppress +vnocompatwarnings in configure for HPUX (not always supported)
|
||
|
||
Changes in 1.0.7 (20 Jan 1998)
|
||
- fix gzseek which was broken in write mode
|
||
- return error for gzseek to negative absolute position
|
||
- fix configure for Linux (Chun-Chung Chen)
|
||
- increase stack space for MSC (Tim Wegner)
|
||
- get_crc_table and inflateSyncPoint are EXPORTed (Gilles Vollant)
|
||
- define EXPORTVA for gzprintf (Gilles Vollant)
|
||
- added man page zlib.3 (Rick Rodgers)
|
||
- for contrib/untgz, fix makedir() and improve Makefile
|
||
|
||
- check gzseek in write mode in example.c
|
||
- allocate extra buffer for seeks only if gzseek is actually called
|
||
- avoid signed/unsigned comparisons (Tim Wegner, Gilles Vollant)
|
||
- add inflateSyncPoint in zconf.h
|
||
- fix list of exported functions in nt/zlib.dnt and mdsos/zlib.def
|
||
|
||
Changes in 1.0.6 (19 Jan 1998)
|
||
- add functions gzprintf, gzputc, gzgetc, gztell, gzeof, gzseek, gzrewind and
|
||
gzsetparams (thanks to Roland Giersig and Kevin Ruland for some of this code)
|
||
- Fix a deflate bug occuring only with compression level 0 (thanks to
|
||
Andy Buckler for finding this one).
|
||
- In minigzip, pass transparently also the first byte for .Z files.
|
||
- return Z_BUF_ERROR instead of Z_OK if output buffer full in uncompress()
|
||
- check Z_FINISH in inflate (thanks to Marc Schluper)
|
||
- Implement deflateCopy (thanks to Adam Costello)
|
||
- make static libraries by default in configure, add --shared option.
|
||
- move MSDOS or Windows specific files to directory msdos
|
||
- suppress the notion of partial flush to simplify the interface
|
||
(but the symbol Z_PARTIAL_FLUSH is kept for compatibility with 1.0.4)
|
||
- suppress history buffer provided by application to simplify the interface
|
||
(this feature was not implemented anyway in 1.0.4)
|
||
- next_in and avail_in must be initialized before calling inflateInit or
|
||
inflateInit2
|
||
- add EXPORT in all exported functions (for Windows DLL)
|
||
- added Makefile.nt (thanks to Stephen Williams)
|
||
- added the unsupported "contrib" directory:
|
||
contrib/asm386/ by Gilles Vollant <info@winimage.com>
|
||
386 asm code replacing longest_match().
|
||
contrib/iostream/ by Kevin Ruland <kevin@rodin.wustl.edu>
|
||
A C++ I/O streams interface to the zlib gz* functions
|
||
contrib/iostream2/ by Tyge L<>vset <Tyge.Lovset@cmr.no>
|
||
Another C++ I/O streams interface
|
||
contrib/untgz/ by "Pedro A. Aranda Guti\irrez" <paag@tid.es>
|
||
A very simple tar.gz file extractor using zlib
|
||
contrib/visual-basic.txt by Carlos Rios <c_rios@sonda.cl>
|
||
How to use compress(), uncompress() and the gz* functions from VB.
|
||
- pass params -f (filtered data), -h (huffman only), -1 to -9 (compression
|
||
level) in minigzip (thanks to Tom Lane)
|
||
|
||
- use const for rommable constants in deflate
|
||
- added test for gzseek and gztell in example.c
|
||
- add undocumented function inflateSyncPoint() (hack for Paul Mackerras)
|
||
- add undocumented function zError to convert error code to string
|
||
(for Tim Smithers)
|
||
- Allow compilation of gzio with -DNO_DEFLATE to avoid the compression code.
|
||
- Use default memcpy for Symantec MSDOS compiler.
|
||
- Add EXPORT keyword for check_func (needed for Windows DLL)
|
||
- add current directory to LD_LIBRARY_PATH for "make test"
|
||
- create also a link for libz.so.1
|
||
- added support for FUJITSU UXP/DS (thanks to Toshiaki Nomura)
|
||
- use $(SHAREDLIB) instead of libz.so in Makefile.in (for HPUX)
|
||
- added -soname for Linux in configure (Chun-Chung Chen,
|
||
- assign numbers to the exported functions in zlib.def (for Windows DLL)
|
||
- add advice in zlib.h for best usage of deflateSetDictionary
|
||
- work around compiler bug on Atari (cast Z_NULL in call of s->checkfn)
|
||
- allow compilation with ANSI keywords only enabled for TurboC in large model
|
||
- avoid "versionString"[0] (Borland bug)
|
||
- add NEED_DUMMY_RETURN for Borland
|
||
- use variable z_verbose for tracing in debug mode (L. Peter Deutsch).
|
||
- allow compilation with CC
|
||
- defined STDC for OS/2 (David Charlap)
|
||
- limit external names to 8 chars for MVS (Thomas Lund)
|
||
- in minigzip.c, use static buffers only for 16-bit systems
|
||
- fix suffix check for "minigzip -d foo.gz"
|
||
- do not return an error for the 2nd of two consecutive gzflush() (Felix Lee)
|
||
- use _fdopen instead of fdopen for MSC >= 6.0 (Thomas Fanslau)
|
||
- added makelcc.bat for lcc-win32 (Tom St Denis)
|
||
- in Makefile.dj2, use copy and del instead of install and rm (Frank Donahoe)
|
||
- Avoid expanded $Id$. Use "rcs -kb" or "cvs admin -kb" to avoid Id expansion.
|
||
- check for unistd.h in configure (for off_t)
|
||
- remove useless check parameter in inflate_blocks_free
|
||
- avoid useless assignment of s->check to itself in inflate_blocks_new
|
||
- do not flush twice in gzclose (thanks to Ken Raeburn)
|
||
- rename FOPEN as F_OPEN to avoid clash with /usr/include/sys/file.h
|
||
- use NO_ERRNO_H instead of enumeration of operating systems with errno.h
|
||
- work around buggy fclose on pipes for HP/UX
|
||
- support zlib DLL with BORLAND C++ 5.0 (thanks to Glenn Randers-Pehrson)
|
||
- fix configure if CC is already equal to gcc
|
||
|
||
Changes in 1.0.5 (3 Jan 98)
|
||
- Fix inflate to terminate gracefully when fed corrupted or invalid data
|
||
- Use const for rommable constants in inflate
|
||
- Eliminate memory leaks on error conditions in inflate
|
||
- Removed some vestigial code in inflate
|
||
- Update web address in README
|
||
|
||
Changes in 1.0.4 (24 Jul 96)
|
||
- In very rare conditions, deflate(s, Z_FINISH) could fail to produce an EOF
|
||
bit, so the decompressor could decompress all the correct data but went
|
||
on to attempt decompressing extra garbage data. This affected minigzip too.
|
||
- zlibVersion and gzerror return const char* (needed for DLL)
|
||
- port to RISCOS (no fdopen, no multiple dots, no unlink, no fileno)
|
||
- use z_error only for DEBUG (avoid problem with DLLs)
|
||
|
||
Changes in 1.0.3 (2 Jul 96)
|
||
- use z_streamp instead of z_stream *, which is now a far pointer in MSDOS
|
||
small and medium models; this makes the library incompatible with previous
|
||
versions for these models. (No effect in large model or on other systems.)
|
||
- return OK instead of BUF_ERROR if previous deflate call returned with
|
||
avail_out as zero but there is nothing to do
|
||
- added memcmp for non STDC compilers
|
||
- define NO_DUMMY_DECL for more Mac compilers (.h files merged incorrectly)
|
||
- define __32BIT__ if __386__ or i386 is defined (pb. with Watcom and SCO)
|
||
- better check for 16-bit mode MSC (avoids problem with Symantec)
|
||
|
||
Changes in 1.0.2 (23 May 96)
|
||
- added Windows DLL support
|
||
- added a function zlibVersion (for the DLL support)
|
||
- fixed declarations using Bytef in infutil.c (pb with MSDOS medium model)
|
||
- Bytef is define's instead of typedef'd only for Borland C
|
||
- avoid reading uninitialized memory in example.c
|
||
- mention in README that the zlib format is now RFC1950
|
||
- updated Makefile.dj2
|
||
- added algorithm.doc
|
||
|
||
Changes in 1.0.1 (20 May 96) [1.0 skipped to avoid confusion]
|
||
- fix array overlay in deflate.c which sometimes caused bad compressed data
|
||
- fix inflate bug with empty stored block
|
||
- fix MSDOS medium model which was broken in 0.99
|
||
- fix deflateParams() which could generated bad compressed data.
|
||
- Bytef is define'd instead of typedef'ed (work around Borland bug)
|
||
- added an INDEX file
|
||
- new makefiles for DJGPP (Makefile.dj2), 32-bit Borland (Makefile.b32),
|
||
Watcom (Makefile.wat), Amiga SAS/C (Makefile.sas)
|
||
- speed up adler32 for modern machines without auto-increment
|
||
- added -ansi for IRIX in configure
|
||
- static_init_done in trees.c is an int
|
||
- define unlink as delete for VMS
|
||
- fix configure for QNX
|
||
- add configure branch for SCO and HPUX
|
||
- avoid many warnings (unused variables, dead assignments, etc...)
|
||
- no fdopen for BeOS
|
||
- fix the Watcom fix for 32 bit mode (define FAR as empty)
|
||
- removed redefinition of Byte for MKWERKS
|
||
- work around an MWKERKS bug (incorrect merge of all .h files)
|
||
|
||
Changes in 0.99 (27 Jan 96)
|
||
- allow preset dictionary shared between compressor and decompressor
|
||
- allow compression level 0 (no compression)
|
||
- add deflateParams in zlib.h: allow dynamic change of compression level
|
||
and compression strategy.
|
||
- test large buffers and deflateParams in example.c
|
||
- add optional "configure" to build zlib as a shared library
|
||
- suppress Makefile.qnx, use configure instead
|
||
- fixed deflate for 64-bit systems (detected on Cray)
|
||
- fixed inflate_blocks for 64-bit systems (detected on Alpha)
|
||
- declare Z_DEFLATED in zlib.h (possible parameter for deflateInit2)
|
||
- always return Z_BUF_ERROR when deflate() has nothing to do
|
||
- deflateInit and inflateInit are now macros to allow version checking
|
||
- prefix all global functions and types with z_ with -DZ_PREFIX
|
||
- make falloc completely reentrant (inftrees.c)
|
||
- fixed very unlikely race condition in ct_static_init
|
||
- free in reverse order of allocation to help memory manager
|
||
- use zlib-1.0/* instead of zlib/* inside the tar.gz
|
||
- make zlib warning-free with "gcc -O3 -Wall -Wwrite-strings -Wpointer-arith
|
||
-Wconversion -Wstrict-prototypes -Wmissing-prototypes"
|
||
- allow gzread on concatenated .gz files
|
||
- deflateEnd now returns Z_DATA_ERROR if it was premature
|
||
- deflate is finally (?) fully deterministic (no matches beyond end of input)
|
||
- Document Z_SYNC_FLUSH
|
||
- add uninstall in Makefile
|
||
- Check for __cpluplus in zlib.h
|
||
- Better test in ct_align for partial flush
|
||
- avoid harmless warnings for Borland C++
|
||
- initialize hash_head in deflate.c
|
||
- avoid warning on fdopen (gzio.c) for HP cc -Aa
|
||
- include stdlib.h for STDC compilers
|
||
- include errno.h for Cray
|
||
- ignore error if ranlib doesn't exist
|
||
- call ranlib twice for NeXTSTEP
|
||
- use exec_prefix instead of prefix for libz.a
|
||
- renamed ct_* as _tr_* to avoid conflict with applications
|
||
- clear z->msg in inflateInit2 before any error return
|
||
- initialize opaque in example.c, gzio.c, deflate.c and inflate.c
|
||
- fixed typo in zconf.h (_GNUC__ => __GNUC__)
|
||
- check for WIN32 in zconf.h and zutil.c (avoid farmalloc in 32-bit mode)
|
||
- fix typo in Make_vms.com (f$trnlnm -> f$getsyi)
|
||
- in fcalloc, normalize pointer if size > 65520 bytes
|
||
- don't use special fcalloc for 32 bit Borland C++
|
||
- use STDC instead of __GO32__ to avoid redeclaring exit, calloc, etc...
|
||
- use Z_BINARY instead of BINARY
|
||
- document that gzclose after gzdopen will close the file
|
||
- allow "a" as mode in gzopen.
|
||
- fix error checking in gzread
|
||
- allow skipping .gz extra-field on pipes
|
||
- added reference to Perl interface in README
|
||
- put the crc table in FAR data (I dislike more and more the medium model :)
|
||
- added get_crc_table
|
||
- added a dimension to all arrays (Borland C can't count).
|
||
- workaround Borland C bug in declaration of inflate_codes_new & inflate_fast
|
||
- guard against multiple inclusion of *.h (for precompiled header on Mac)
|
||
- Watcom C pretends to be Microsoft C small model even in 32 bit mode.
|
||
- don't use unsized arrays to avoid silly warnings by Visual C++:
|
||
warning C4746: 'inflate_mask' : unsized array treated as '__far'
|
||
(what's wrong with far data in far model?).
|
||
- define enum out of inflate_blocks_state to allow compilation with C++
|
||
|
||
Changes in 0.95 (16 Aug 95)
|
||
- fix MSDOS small and medium model (now easier to adapt to any compiler)
|
||
- inlined send_bits
|
||
- fix the final (:-) bug for deflate with flush (output was correct but
|
||
not completely flushed in rare occasions).
|
||
- default window size is same for compression and decompression
|
||
(it's now sufficient to set MAX_WBITS in zconf.h).
|
||
- voidp -> voidpf and voidnp -> voidp (for consistency with other
|
||
typedefs and because voidnp was not near in large model).
|
||
|
||
Changes in 0.94 (13 Aug 95)
|
||
- support MSDOS medium model
|
||
- fix deflate with flush (could sometimes generate bad output)
|
||
- fix deflateReset (zlib header was incorrectly suppressed)
|
||
- added support for VMS
|
||
- allow a compression level in gzopen()
|
||
- gzflush now calls fflush
|
||
- For deflate with flush, flush even if no more input is provided.
|
||
- rename libgz.a as libz.a
|
||
- avoid complex expression in infcodes.c triggering Turbo C bug
|
||
- work around a problem with gcc on Alpha (in INSERT_STRING)
|
||
- don't use inline functions (problem with some gcc versions)
|
||
- allow renaming of Byte, uInt, etc... with #define.
|
||
- avoid warning about (unused) pointer before start of array in deflate.c
|
||
- avoid various warnings in gzio.c, example.c, infblock.c, adler32.c, zutil.c
|
||
- avoid reserved word 'new' in trees.c
|
||
|
||
Changes in 0.93 (25 June 95)
|
||
- temporarily disable inline functions
|
||
- make deflate deterministic
|
||
- give enough lookahead for PARTIAL_FLUSH
|
||
- Set binary mode for stdin/stdout in minigzip.c for OS/2
|
||
- don't even use signed char in inflate (not portable enough)
|
||
- fix inflate memory leak for segmented architectures
|
||
|
||
Changes in 0.92 (3 May 95)
|
||
- don't assume that char is signed (problem on SGI)
|
||
- Clear bit buffer when starting a stored block
|
||
- no memcpy on Pyramid
|
||
- suppressed inftest.c
|
||
- optimized fill_window, put longest_match inline for gcc
|
||
- optimized inflate on stored blocks.
|
||
- untabify all sources to simplify patches
|
||
|
||
Changes in 0.91 (2 May 95)
|
||
- Default MEM_LEVEL is 8 (not 9 for Unix) as documented in zlib.h
|
||
- Document the memory requirements in zconf.h
|
||
- added "make install"
|
||
- fix sync search logic in inflateSync
|
||
- deflate(Z_FULL_FLUSH) now works even if output buffer too short
|
||
- after inflateSync, don't scare people with just "lo world"
|
||
- added support for DJGPP
|
||
|
||
Changes in 0.9 (1 May 95)
|
||
- don't assume that zalloc clears the allocated memory (the TurboC bug
|
||
was Mark's bug after all :)
|
||
- let again gzread copy uncompressed data unchanged (was working in 0.71)
|
||
- deflate(Z_FULL_FLUSH), inflateReset and inflateSync are now fully implemented
|
||
- added a test of inflateSync in example.c
|
||
- moved MAX_WBITS to zconf.h because users might want to change that.
|
||
- document explicitly that zalloc(64K) on MSDOS must return a normalized
|
||
pointer (zero offset)
|
||
- added Makefiles for Microsoft C, Turbo C, Borland C++
|
||
- faster crc32()
|
||
|
||
Changes in 0.8 (29 April 95)
|
||
- added fast inflate (inffast.c)
|
||
- deflate(Z_FINISH) now returns Z_STREAM_END when done. Warning: this
|
||
is incompatible with previous versions of zlib which returned Z_OK.
|
||
- work around a TurboC compiler bug (bad code for b << 0, see infutil.h)
|
||
(actually that was not a compiler bug, see 0.81 above)
|
||
- gzread no longer reads one extra byte in certain cases
|
||
- In gzio destroy(), don't reference a freed structure
|
||
- avoid many warnings for MSDOS
|
||
- avoid the ERROR symbol which is used by MS Windows
|
||
|
||
Changes in 0.71 (14 April 95)
|
||
- Fixed more MSDOS compilation problems :( There is still a bug with
|
||
TurboC large model.
|
||
|
||
Changes in 0.7 (14 April 95)
|
||
- Added full inflate support.
|
||
- Simplified the crc32() interface. The pre- and post-conditioning
|
||
(one's complement) is now done inside crc32(). WARNING: this is
|
||
incompatible with previous versions; see zlib.h for the new usage.
|
||
|
||
Changes in 0.61 (12 April 95)
|
||
- workaround for a bug in TurboC. example and minigzip now work on MSDOS.
|
||
|
||
Changes in 0.6 (11 April 95)
|
||
- added minigzip.c
|
||
- added gzdopen to reopen a file descriptor as gzFile
|
||
- added transparent reading of non-gziped files in gzread.
|
||
- fixed bug in gzread (don't read crc as data)
|
||
- fixed bug in destroy (gzio.c) (don't return Z_STREAM_END for gzclose).
|
||
- don't allocate big arrays in the stack (for MSDOS)
|
||
- fix some MSDOS compilation problems
|
||
|
||
Changes in 0.5:
|
||
- do real compression in deflate.c. Z_PARTIAL_FLUSH is supported but
|
||
not yet Z_FULL_FLUSH.
|
||
- support decompression but only in a single step (forced Z_FINISH)
|
||
- added opaque object for zalloc and zfree.
|
||
- added deflateReset and inflateReset
|
||
- added a variable zlib_version for consistency checking.
|
||
- renamed the 'filter' parameter of deflateInit2 as 'strategy'.
|
||
Added Z_FILTERED and Z_HUFFMAN_ONLY constants.
|
||
|
||
Changes in 0.4:
|
||
- avoid "zip" everywhere, use zlib instead of ziplib.
|
||
- suppress Z_BLOCK_FLUSH, interpret Z_PARTIAL_FLUSH as block flush
|
||
if compression method == 8.
|
||
- added adler32 and crc32
|
||
- renamed deflateOptions as deflateInit2, call one or the other but not both
|
||
- added the method parameter for deflateInit2.
|
||
- added inflateInit2
|
||
- simplied considerably deflateInit and inflateInit by not supporting
|
||
user-provided history buffer. This is supported only in deflateInit2
|
||
and inflateInit2.
|
||
|
||
Changes in 0.3:
|
||
- prefix all macro names with Z_
|
||
- use Z_FINISH instead of deflateEnd to finish compression.
|
||
- added Z_HUFFMAN_ONLY
|
||
- added gzerror()
|