Browse files

from www.zlib.net

  • Loading branch information...
1 parent a2bca40 commit db16aefcf799d90178b0b94809e731a7f12acb1e christos committed Jan 14, 2006
Showing with 19,822 additions and 0 deletions.
  1. +855 −0 common/dist/zlib/ChangeLog
  2. +339 −0 common/dist/zlib/FAQ
  3. +51 −0 common/dist/zlib/INDEX
  4. +154 −0 common/dist/zlib/Makefile
  5. +154 −0 common/dist/zlib/Makefile.in
  6. +125 −0 common/dist/zlib/README
  7. +151 −0 common/dist/zlib/adler32.c
  8. +209 −0 common/dist/zlib/algorithm.txt
  9. +66 −0 common/dist/zlib/amiga/Makefile.pup
  10. +65 −0 common/dist/zlib/amiga/Makefile.sas
  11. +132 −0 common/dist/zlib/as400/bndsrc
  12. +123 −0 common/dist/zlib/as400/compile.clp
  13. +111 −0 common/dist/zlib/as400/readme.txt
  14. +331 −0 common/dist/zlib/as400/zlib.inc
  15. +81 −0 common/dist/zlib/compress.c
  16. +459 −0 common/dist/zlib/configure
  17. +71 −0 common/dist/zlib/contrib/README.contrib
  18. +106 −0 common/dist/zlib/contrib/ada/buffer_demo.adb
  19. +156 −0 common/dist/zlib/contrib/ada/mtest.adb
  20. +156 −0 common/dist/zlib/contrib/ada/read.adb
  21. +65 −0 common/dist/zlib/contrib/ada/readme.txt
  22. +463 −0 common/dist/zlib/contrib/ada/test.adb
  23. +225 −0 common/dist/zlib/contrib/ada/zlib-streams.adb
  24. +114 −0 common/dist/zlib/contrib/ada/zlib-streams.ads
  25. +141 −0 common/dist/zlib/contrib/ada/zlib-thin.adb
  26. +450 −0 common/dist/zlib/contrib/ada/zlib-thin.ads
  27. +701 −0 common/dist/zlib/contrib/ada/zlib.adb
  28. +328 −0 common/dist/zlib/contrib/ada/zlib.ads
  29. +20 −0 common/dist/zlib/contrib/ada/zlib.gpr
  30. +43 −0 common/dist/zlib/contrib/asm586/README.586
  31. +364 −0 common/dist/zlib/contrib/asm586/match.S
  32. +34 −0 common/dist/zlib/contrib/asm686/README.686
  33. +329 −0 common/dist/zlib/contrib/asm686/match.S
  34. +8 −0 common/dist/zlib/contrib/blast/Makefile
  35. +4 −0 common/dist/zlib/contrib/blast/README
  36. +446 −0 common/dist/zlib/contrib/blast/blast.c
  37. +73 −0 common/dist/zlib/contrib/blast/blast.h
  38. BIN common/dist/zlib/contrib/blast/test.pk
  39. +1 −0 common/dist/zlib/contrib/blast/test.txt
  40. +557 −0 common/dist/zlib/contrib/delphi/ZLib.pas
  41. +11 −0 common/dist/zlib/contrib/delphi/ZLibConst.pas
  42. +76 −0 common/dist/zlib/contrib/delphi/readme.txt
  43. +93 −0 common/dist/zlib/contrib/delphi/zlibd32.mak
  44. +33 −0 common/dist/zlib/contrib/dotzlib/DotZLib.build
  45. BIN common/dist/zlib/contrib/dotzlib/DotZLib.chm
  46. +21 −0 common/dist/zlib/contrib/dotzlib/DotZLib.sln
  47. +58 −0 common/dist/zlib/contrib/dotzlib/DotZLib/AssemblyInfo.cs
  48. +202 −0 common/dist/zlib/contrib/dotzlib/DotZLib/ChecksumImpl.cs
  49. +83 −0 common/dist/zlib/contrib/dotzlib/DotZLib/CircularBuffer.cs
  50. +198 −0 common/dist/zlib/contrib/dotzlib/DotZLib/CodecBase.cs
  51. +106 −0 common/dist/zlib/contrib/dotzlib/DotZLib/Deflater.cs
  52. +288 −0 common/dist/zlib/contrib/dotzlib/DotZLib/DotZLib.cs
  53. +141 −0 common/dist/zlib/contrib/dotzlib/DotZLib/DotZLib.csproj
  54. +301 −0 common/dist/zlib/contrib/dotzlib/DotZLib/GZipStream.cs
  55. +105 −0 common/dist/zlib/contrib/dotzlib/DotZLib/Inflater.cs
  56. +274 −0 common/dist/zlib/contrib/dotzlib/DotZLib/UnitTests.cs
  57. +23 −0 common/dist/zlib/contrib/dotzlib/LICENSE_1_0.txt
  58. +58 −0 common/dist/zlib/contrib/dotzlib/readme.txt
  59. +1 −0 common/dist/zlib/contrib/infback9/README
  60. +610 −0 common/dist/zlib/contrib/infback9/infback9.c
  61. +39 −0 common/dist/zlib/contrib/infback9/infback9.h
  62. +109 −0 common/dist/zlib/contrib/infback9/inffix9.h
  63. +49 −0 common/dist/zlib/contrib/infback9/inflate9.h
  64. +325 −0 common/dist/zlib/contrib/infback9/inftree9.c
  65. +57 −0 common/dist/zlib/contrib/infback9/inftree9.h
  66. +1,159 −0 common/dist/zlib/contrib/inflate86/inffas86.c
  67. +1,368 −0 common/dist/zlib/contrib/inflate86/inffast.S
  68. +24 −0 common/dist/zlib/contrib/iostream/test.cpp
  69. +329 −0 common/dist/zlib/contrib/iostream/zfstream.cpp
  70. +130 −0 common/dist/zlib/contrib/iostream/zfstream.h
  71. +309 −0 common/dist/zlib/contrib/iostream2/zstream.h
  72. +25 −0 common/dist/zlib/contrib/iostream2/zstream_test.cpp
  73. +35 −0 common/dist/zlib/contrib/iostream3/README
  74. +17 −0 common/dist/zlib/contrib/iostream3/TODO
  75. +50 −0 common/dist/zlib/contrib/iostream3/test.cc
  76. +479 −0 common/dist/zlib/contrib/iostream3/zfstream.cc
  77. +468 −0 common/dist/zlib/contrib/iostream3/zfstream.h
  78. +413 −0 common/dist/zlib/contrib/masm686/match.asm
  79. +2 −0 common/dist/zlib/contrib/masmx64/bld_ml64.bat
  80. +513 −0 common/dist/zlib/contrib/masmx64/gvmat64.asm
  81. +188 −0 common/dist/zlib/contrib/masmx64/inffas8664.c
  82. +392 −0 common/dist/zlib/contrib/masmx64/inffasx64.asm
  83. +28 −0 common/dist/zlib/contrib/masmx64/readme.txt
  84. +2 −0 common/dist/zlib/contrib/masmx86/bld_ml32.bat
  85. +972 −0 common/dist/zlib/contrib/masmx86/gvmat32.asm
  86. +64 −0 common/dist/zlib/contrib/masmx86/gvmat32c.c
  87. +1,083 −0 common/dist/zlib/contrib/masmx86/inffas32.asm
  88. +3 −0 common/dist/zlib/contrib/masmx86/mkasm.bat
  89. +21 −0 common/dist/zlib/contrib/masmx86/readme.txt
  90. +67 −0 common/dist/zlib/contrib/minizip/ChangeLogUnzip
  91. +25 −0 common/dist/zlib/contrib/minizip/Makefile
  92. +134 −0 common/dist/zlib/contrib/minizip/crypt.h
Sorry, we could not display the entire diff because it was too big.
View
855 common/dist/zlib/ChangeLog
@@ -0,0 +1,855 @@
+
+ ChangeLog file for zlib
+
+Changes in 1.2.3 (18 July 2005)
+- Apply security vulnerability fixes to contrib/infback9 as well
+- Clean up some text files (carriage returns, trailing space)
+- Update testzlib, vstudio, masmx64, and masmx86 in contrib [Vollant]
+
+Changes in 1.2.2.4 (11 July 2005)
+- Add inflatePrime() function for starting inflation at bit boundary
+- Avoid some Visual C warnings in deflate.c
+- Avoid more silly Visual C warnings in inflate.c and inftrees.c for 64-bit
+ compile
+- Fix some spelling errors in comments [Betts]
+- Correct inflateInit2() error return documentation in zlib.h
+- Added zran.c example of compressed data random access to examples
+ directory, shows use of inflatePrime()
+- Fix cast for assignments to strm->state in inflate.c and infback.c
+- Fix zlibCompileFlags() in zutil.c to use 1L for long shifts [Oberhumer]
+- Move declarations of gf2 functions to right place in crc32.c [Oberhumer]
+- Add cast in trees.c t avoid a warning [Oberhumer]
+- Avoid some warnings in fitblk.c, gun.c, gzjoin.c in examples [Oberhumer]
+- Update make_vms.com [Zinser]
+- Initialize state->write in inflateReset() since copied in inflate_fast()
+- Be more strict on incomplete code sets in inflate_table() and increase
+ ENOUGH and MAXD -- this repairs a possible security vulnerability for
+ invalid inflate input. Thanks to Tavis Ormandy and Markus Oberhumer for
+ discovering the vulnerability and providing test cases.
+- Add ia64 support to configure for HP-UX [Smith]
+- Add error return to gzread() for format or i/o error [Levin]
+- Use malloc.h for OS/2 [Necasek]
+
+Changes in 1.2.2.3 (27 May 2005)
+- Replace 1U constants in inflate.c and inftrees.c for 64-bit compile
+- Typecast fread() return values in gzio.c [Vollant]
+- Remove trailing space in minigzip.c outmode (VC++ can't deal with it)
+- Fix crc check bug in gzread() after gzungetc() [Heiner]
+- Add the deflateTune() function to adjust internal compression parameters
+- Add a fast gzip decompressor, gun.c, to examples (use of inflateBack)
+- Remove an incorrect assertion in examples/zpipe.c
+- Add C++ wrapper in infback9.h [Donais]
+- Fix bug in inflateCopy() when decoding fixed codes
+- Note in zlib.h how much deflateSetDictionary() actually uses
+- Remove USE_DICT_HEAD in deflate.c (would mess up inflate if used)
+- Add _WIN32_WCE to define WIN32 in zconf.in.h [Spencer]
+- Don't include stderr.h or errno.h for _WIN32_WCE in zutil.h [Spencer]
+- Add gzdirect() function to indicate transparent reads
+- Update contrib/minizip [Vollant]
+- Fix compilation of deflate.c when both ASMV and FASTEST [Oberhumer]
+- Add casts in crc32.c to avoid warnings [Oberhumer]
+- Add contrib/masmx64 [Vollant]
+- Update contrib/asm586, asm686, masmx86, testzlib, vstudio [Vollant]
+
+Changes in 1.2.2.2 (30 December 2004)
+- Replace structure assignments in deflate.c and inflate.c with zmemcpy to
+ avoid implicit memcpy calls (portability for no-library compilation)
+- Increase sprintf() buffer size in gzdopen() to allow for large numbers
+- Add INFLATE_STRICT to check distances against zlib header
+- Improve WinCE errno handling and comments [Chang]
+- Remove comment about no gzip header processing in FAQ
+- Add Z_FIXED strategy option to deflateInit2() to force fixed trees
+- Add updated make_vms.com [Coghlan], update README
+- Create a new "examples" directory, move gzappend.c there, add zpipe.c,
+ fitblk.c, gzlog.[ch], gzjoin.c, and zlib_how.html.
+- Add FAQ entry and comments in deflate.c on uninitialized memory access
+- Add Solaris 9 make options in configure [Gilbert]
+- Allow strerror() usage in gzio.c for STDC
+- Fix DecompressBuf in contrib/delphi/ZLib.pas [ManChesTer]
+- Update contrib/masmx86/inffas32.asm and gvmat32.asm [Vollant]
+- Use z_off_t for adler32_combine() and crc32_combine() lengths
+- Make adler32() much faster for small len
+- Use OS_CODE in deflate() default gzip header
+
+Changes in 1.2.2.1 (31 October 2004)
+- Allow inflateSetDictionary() call for raw inflate
+- Fix inflate header crc check bug for file names and comments
+- Add deflateSetHeader() and gz_header structure for custom gzip headers
+- Add inflateGetheader() to retrieve gzip headers
+- Add crc32_combine() and adler32_combine() functions
+- Add alloc_func, free_func, in_func, out_func to Z_PREFIX list
+- Use zstreamp consistently in zlib.h (inflate_back functions)
+- Remove GUNZIP condition from definition of inflate_mode in inflate.h
+ and in contrib/inflate86/inffast.S [Truta, Anderson]
+- Add support for AMD64 in contrib/inflate86/inffas86.c [Anderson]
+- Update projects/README.projects and projects/visualc6 [Truta]
+- Update win32/DLL_FAQ.txt [Truta]
+- Avoid warning under NO_GZCOMPRESS in gzio.c; fix typo [Truta]
+- Deprecate Z_ASCII; use Z_TEXT instead [Truta]
+- Use a new algorithm for setting strm->data_type in trees.c [Truta]
+- Do not define an exit() prototype in zutil.c unless DEBUG defined
+- Remove prototype of exit() from zutil.c, example.c, minigzip.c [Truta]
+- Add comment in zlib.h for Z_NO_FLUSH parameter to deflate()
+- Fix Darwin build version identification [Peterson]
+
+Changes in 1.2.2 (3 October 2004)
+- Update zlib.h comments on gzip in-memory processing
+- Set adler to 1 in inflateReset() to support Java test suite [Walles]
+- Add contrib/dotzlib [Ravn]
+- Update win32/DLL_FAQ.txt [Truta]
+- Update contrib/minizip [Vollant]
+- Move contrib/visual-basic.txt to old/ [Truta]
+- Fix assembler builds in projects/visualc6/ [Truta]
+
+Changes in 1.2.1.2 (9 September 2004)
+- Update INDEX file
+- Fix trees.c to update strm->data_type (no one ever noticed!)
+- Fix bug in error case in inflate.c, infback.c, and infback9.c [Brown]
+- Add "volatile" to crc table flag declaration (for DYNAMIC_CRC_TABLE)
+- Add limited multitasking protection to DYNAMIC_CRC_TABLE
+- Add NO_vsnprintf for VMS in zutil.h [Mozilla]
+- Don't declare strerror() under VMS [Mozilla]
+- Add comment to DYNAMIC_CRC_TABLE to use get_crc_table() to initialize
+- Update contrib/ada [Anisimkov]
+- Update contrib/minizip [Vollant]
+- Fix configure to not hardcode directories for Darwin [Peterson]
+- Fix gzio.c to not return error on empty files [Brown]
+- Fix indentation; update version in contrib/delphi/ZLib.pas and
+ contrib/pascal/zlibpas.pas [Truta]
+- Update mkasm.bat in contrib/masmx86 [Truta]
+- Update contrib/untgz [Truta]
+- Add projects/README.projects [Truta]
+- Add project for MS Visual C++ 6.0 in projects/visualc6 [Cadieux, Truta]
+- Update win32/DLL_FAQ.txt [Truta]
+- Update list of Z_PREFIX symbols in zconf.h [Randers-Pehrson, Truta]
+- Remove an unnecessary assignment to curr in inftrees.c [Truta]
+- Add OS/2 to exe builds in configure [Poltorak]
+- Remove err dummy parameter in zlib.h [Kientzle]
+
+Changes in 1.2.1.1 (9 January 2004)
+- Update email address in README
+- Several FAQ updates
+- Fix a big fat bug in inftrees.c that prevented decoding valid
+ dynamic blocks with only literals and no distance codes --
+ Thanks to "Hot Emu" for the bug report and sample file
+- Add a note to puff.c on no distance codes case.
+
+Changes in 1.2.1 (17 November 2003)
+- Remove a tab in contrib/gzappend/gzappend.c
+- Update some interfaces in contrib for new zlib functions
+- Update zlib version number in some contrib entries
+- Add Windows CE definition for ptrdiff_t in zutil.h [Mai, Truta]
+- Support shared libraries on Hurd and KFreeBSD [Brown]
+- Fix error in NO_DIVIDE option of adler32.c
+
+Changes in 1.2.0.8 (4 November 2003)
+- Update version in contrib/delphi/ZLib.pas and contrib/pascal/zlibpas.pas
+- Add experimental NO_DIVIDE #define in adler32.c
+ - Possibly faster on some processors (let me know if it is)
+- Correct Z_BLOCK to not return on first inflate call if no wrap
+- Fix strm->data_type on inflate() return to correctly indicate EOB
+- Add deflatePrime() function for appending in the middle of a byte
+- Add contrib/gzappend for an example of appending to a stream
+- Update win32/DLL_FAQ.txt [Truta]
+- Delete Turbo C comment in README [Truta]
+- Improve some indentation in zconf.h [Truta]
+- Fix infinite loop on bad input in configure script [Church]
+- Fix gzeof() for concatenated gzip files [Johnson]
+- Add example to contrib/visual-basic.txt [Michael B.]
+- Add -p to mkdir's in Makefile.in [vda]
+- Fix configure to properly detect presence or lack of printf functions
+- Add AS400 support [Monnerat]
+- Add a little Cygwin support [Wilson]
+
+Changes in 1.2.0.7 (21 September 2003)
+- Correct some debug formats in contrib/infback9
+- Cast a type in a debug statement in trees.c
+- Change search and replace delimiter in configure from % to # [Beebe]
+- Update contrib/untgz to 0.2 with various fixes [Truta]
+- Add build support for Amiga [Nikl]
+- Remove some directories in old that have been updated to 1.2
+- Add dylib building for Mac OS X in configure and Makefile.in
+- Remove old distribution stuff from Makefile
+- Update README to point to DLL_FAQ.txt, and add comment on Mac OS X
+- Update links in README
+
+Changes in 1.2.0.6 (13 September 2003)
+- Minor FAQ updates
+- Update contrib/minizip to 1.00 [Vollant]
+- Remove test of gz functions in example.c when GZ_COMPRESS defined [Truta]
+- Update POSTINC comment for 68060 [Nikl]
+- Add contrib/infback9 with deflate64 decoding (unsupported)
+- For MVS define NO_vsnprintf and undefine FAR [van Burik]
+- Add pragma for fdopen on MVS [van Burik]
+
+Changes in 1.2.0.5 (8 September 2003)
+- Add OF to inflateBackEnd() declaration in zlib.h
+- Remember start when using gzdopen in the middle of a file
+- Use internal off_t counters in gz* functions to properly handle seeks
+- Perform more rigorous check for distance-too-far in inffast.c
+- Add Z_BLOCK flush option to return from inflate at block boundary
+- Set strm->data_type on return from inflate
+ - Indicate bits unused, if at block boundary, and if in last block
+- Replace size_t with ptrdiff_t in crc32.c, and check for correct size
+- Add condition so old NO_DEFLATE define still works for compatibility
+- FAQ update regarding the Windows DLL [Truta]
+- INDEX update: add qnx entry, remove aix entry [Truta]
+- Install zlib.3 into mandir [Wilson]
+- Move contrib/zlib_dll_FAQ.txt to win32/DLL_FAQ.txt; update [Truta]
+- Adapt the zlib interface to the new DLL convention guidelines [Truta]
+- Introduce ZLIB_WINAPI macro to allow the export of functions using
+ the WINAPI calling convention, for Visual Basic [Vollant, Truta]
+- Update msdos and win32 scripts and makefiles [Truta]
+- Export symbols by name, not by ordinal, in win32/zlib.def [Truta]
+- Add contrib/ada [Anisimkov]
+- Move asm files from contrib/vstudio/vc70_32 to contrib/asm386 [Truta]
+- Rename contrib/asm386 to contrib/masmx86 [Truta, Vollant]
+- Add contrib/masm686 [Truta]
+- Fix offsets in contrib/inflate86 and contrib/masmx86/inffas32.asm
+ [Truta, Vollant]
+- Update contrib/delphi; rename to contrib/pascal; add example [Truta]
+- Remove contrib/delphi2; add a new contrib/delphi [Truta]
+- Avoid inclusion of the nonstandard <memory.h> in contrib/iostream,
+ and fix some method prototypes [Truta]
+- Fix the ZCR_SEED2 constant to avoid warnings in contrib/minizip
+ [Truta]
+- Avoid the use of backslash (\) in contrib/minizip [Vollant]
+- Fix file time handling in contrib/untgz; update makefiles [Truta]
+- Update contrib/vstudio/vc70_32 to comply with the new DLL guidelines
+ [Vollant]
+- Remove contrib/vstudio/vc15_16 [Vollant]
+- Rename contrib/vstudio/vc70_32 to contrib/vstudio/vc7 [Truta]
+- Update README.contrib [Truta]
+- Invert the assignment order of match_head and s->prev[...] in
+ INSERT_STRING [Truta]
+- Compare TOO_FAR with 32767 instead of 32768, to avoid 16-bit warnings
+ [Truta]
+- Compare function pointers with 0, not with NULL or Z_NULL [Truta]
+- Fix prototype of syncsearch in inflate.c [Truta]
+- Introduce ASMINF macro to be enabled when using an ASM implementation
+ of inflate_fast [Truta]
+- Change NO_DEFLATE to NO_GZCOMPRESS [Truta]
+- Modify test_gzio in example.c to take a single file name as a
+ parameter [Truta]
+- Exit the example.c program if gzopen fails [Truta]
+- Add type casts around strlen in example.c [Truta]
+- Remove casting to sizeof in minigzip.c; give a proper type
+ to the variable compared with SUFFIX_LEN [Truta]
+- Update definitions of STDC and STDC99 in zconf.h [Truta]
+- Synchronize zconf.h with the new Windows DLL interface [Truta]
+- Use SYS16BIT instead of __32BIT__ to distinguish between
+ 16- and 32-bit platforms [Truta]
+- Use far memory allocators in small 16-bit memory models for
+ Turbo C [Truta]
+- Add info about the use of ASMV, ASMINF and ZLIB_WINAPI in
+ zlibCompileFlags [Truta]
+- Cygwin has vsnprintf [Wilson]
+- In Windows16, OS_CODE is 0, as in MSDOS [Truta]
+- In Cygwin, OS_CODE is 3 (Unix), not 11 (Windows32) [Wilson]
+
+Changes in 1.2.0.4 (10 August 2003)
+- Minor FAQ updates
+- Be more strict when checking inflateInit2's windowBits parameter
+- Change NO_GUNZIP compile option to NO_GZIP to cover deflate as well
+- Add gzip wrapper option to deflateInit2 using windowBits
+- Add updated QNX rule in configure and qnx directory [Bonnefoy]
+- Make inflate distance-too-far checks more rigorous
+- Clean up FAR usage in inflate
+- Add casting to sizeof() in gzio.c and minigzip.c
+
+Changes in 1.2.0.3 (19 July 2003)
+- Fix silly error in gzungetc() implementation [Vollant]
+- Update contrib/minizip and contrib/vstudio [Vollant]
+- Fix printf format in example.c
+- Correct cdecl support in zconf.in.h [Anisimkov]
+- Minor FAQ updates
+
+Changes in 1.2.0.2 (13 July 2003)
+- Add ZLIB_VERNUM in zlib.h for numerical preprocessor comparisons
+- Attempt to avoid warnings in crc32.c for pointer-int conversion
+- Add AIX to configure, remove aix directory [Bakker]
+- Add some casts to minigzip.c
+- Improve checking after insecure sprintf() or vsprintf() calls
+- Remove #elif's from crc32.c
+- Change leave label to inf_leave in inflate.c and infback.c to avoid
+ library conflicts
+- Remove inflate gzip decoding by default--only enable gzip decoding by
+ special request for stricter backward compatibility
+- Add zlibCompileFlags() function to return compilation information
+- More typecasting in deflate.c to avoid warnings
+- Remove leading underscore from _Capital #defines [Truta]
+- Fix configure to link shared library when testing
+- Add some Windows CE target adjustments [Mai]
+- Remove #define ZLIB_DLL in zconf.h [Vollant]
+- Add zlib.3 [Rodgers]
+- Update RFC URL in deflate.c and algorithm.txt [Mai]
+- Add zlib_dll_FAQ.txt to contrib [Truta]
+- Add UL to some constants [Truta]
+- Update minizip and vstudio [Vollant]
+- Remove vestigial NEED_DUMMY_RETURN from zconf.in.h
+- Expand use of NO_DUMMY_DECL to avoid all dummy structures
+- Added iostream3 to contrib [Schwardt]
+- Replace rewind() with fseek() for WinCE [Truta]
+- Improve setting of zlib format compression level flags
+ - Report 0 for huffman and rle strategies and for level == 0 or 1
+ - Report 2 only for level == 6
+- Only deal with 64K limit when necessary at compile time [Truta]
+- Allow TOO_FAR check to be turned off at compile time [Truta]
+- Add gzclearerr() function [Souza]
+- Add gzungetc() function
+
+Changes in 1.2.0.1 (17 March 2003)
+- Add Z_RLE strategy for run-length encoding [Truta]
+ - When Z_RLE requested, restrict matches to distance one
+ - Update zlib.h, minigzip.c, gzopen(), gzdopen() for Z_RLE
+- Correct FASTEST compilation to allow level == 0
+- Clean up what gets compiled for FASTEST
+- Incorporate changes to zconf.in.h [Vollant]
+ - Refine detection of Turbo C need for dummy returns
+ - Refine ZLIB_DLL compilation
+ - Include additional header file on VMS for off_t typedef
+- Try to use _vsnprintf where it supplants vsprintf [Vollant]
+- Add some casts in inffast.c
+- Enchance comments in zlib.h on what happens if gzprintf() tries to
+ write more than 4095 bytes before compression
+- Remove unused state from inflateBackEnd()
+- Remove exit(0) from minigzip.c, example.c
+- Get rid of all those darn tabs
+- Add "check" target to Makefile.in that does the same thing as "test"
+- Add "mostlyclean" and "maintainer-clean" targets to Makefile.in
+- Update contrib/inflate86 [Anderson]
+- Update contrib/testzlib, contrib/vstudio, contrib/minizip [Vollant]
+- Add msdos and win32 directories with makefiles [Truta]
+- More additions and improvements to the FAQ
+
+Changes in 1.2.0 (9 March 2003)
+- New and improved inflate code
+ - About 20% faster
+ - Does not allocate 32K window unless and until needed
+ - Automatically detects and decompresses gzip streams
+ - Raw inflate no longer needs an extra dummy byte at end
+ - Added inflateBack functions using a callback interface--even faster
+ than inflate, useful for file utilities (gzip, zip)
+ - Added inflateCopy() function to record state for random access on
+ externally generated deflate streams (e.g. in gzip files)
+ - More readable code (I hope)
+- New and improved crc32()
+ - About 50% faster, thanks to suggestions from Rodney Brown
+- Add deflateBound() and compressBound() functions
+- Fix memory leak in deflateInit2()
+- Permit setting dictionary for raw deflate (for parallel deflate)
+- Fix const declaration for gzwrite()
+- Check for some malloc() failures in gzio.c
+- Fix bug in gzopen() on single-byte file 0x1f
+- Fix bug in gzread() on concatenated file with 0x1f at end of buffer
+ and next buffer doesn't start with 0x8b
+- Fix uncompress() to return Z_DATA_ERROR on truncated input
+- Free memory at end of example.c
+- Remove MAX #define in trees.c (conflicted with some libraries)
+- Fix static const's in deflate.c, gzio.c, and zutil.[ch]
+- Declare malloc() and free() in gzio.c if STDC not defined
+- Use malloc() instead of calloc() in zutil.c if int big enough
+- Define STDC for AIX
+- Add aix/ with approach for compiling shared library on AIX
+- Add HP-UX support for shared libraries in configure
+- Add OpenUNIX support for shared libraries in configure
+- Use $cc instead of gcc to build shared library
+- Make prefix directory if needed when installing
+- Correct Macintosh avoidance of typedef Byte in zconf.h
+- Correct Turbo C memory allocation when under Linux
+- Use libz.a instead of -lz in Makefile (assure use of compiled library)
+- Update configure to check for snprintf or vsnprintf functions and their
+ return value, warn during make if using an insecure function
+- Fix configure problem with compile-time knowledge of HAVE_UNISTD_H that
+ is lost when library is used--resolution is to build new zconf.h
+- Documentation improvements (in zlib.h):
+ - Document raw deflate and inflate
+ - Update RFCs URL
+ - Point out that zlib and gzip formats are different
+ - Note that Z_BUF_ERROR is not fatal
+ - Document string limit for gzprintf() and possible buffer overflow
+ - Note requirement on avail_out when flushing
+ - Note permitted values of flush parameter of inflate()
+- Add some FAQs (and even answers) to the FAQ
+- Add contrib/inflate86/ for x86 faster inflate
+- Add contrib/blast/ for PKWare Data Compression Library decompression
+- Add contrib/puff/ simple inflate for deflate format description
+
+Changes in 1.1.4 (11 March 2002)
+- ZFREE was repeated on same allocation on some error conditions.
+ This creates a security problem described in
+ http://www.zlib.org/advisory-2002-03-11.txt
+- Returned incorrect error (Z_MEM_ERROR) on some invalid data
+- Avoid accesses before window for invalid distances with inflate window
+ less than 32K.
+- force windowBits > 8 to avoid a bug in the encoder for a window size
+ of 256 bytes. (A complete fix will be available in 1.1.5).
+
+Changes in 1.1.3 (9 July 1998)
+- fix "an inflate input buffer bug that shows up on rare but persistent
+ occasions" (Mark)
+- fix gzread and gztell for concatenated .gz files (Didier Le Botlan)
+- fix gzseek(..., SEEK_SET) in write mode
+- fix crc check after a gzeek (Frank Faubert)
+- fix miniunzip when the last entry in a zip file is itself a zip file
+ (J Lillge)
+- add contrib/asm586 and contrib/asm686 (Brian Raiter)
+ See http://www.muppetlabs.com/~breadbox/software/assembly.html
+- add support for Delphi 3 in contrib/delphi (Bob Dellaca)
+- add support for C++Builder 3 and Delphi 3 in contrib/delphi2 (Davide Moretti)
+- do not exit prematurely in untgz if 0 at start of block (Magnus Holmgren)
+- use macro EXTERN instead of extern to support DLL for BeOS (Sander Stoks)
+- added a FAQ file
+
+- Support gzdopen on Mac with Metrowerks (Jason Linhart)
+- Do not redefine Byte on Mac (Brad Pettit & Jason Linhart)
+- define SEEK_END too if SEEK_SET is not defined (Albert Chin-A-Young)
+- avoid some warnings with Borland C (Tom Tanner)
+- fix a problem in contrib/minizip/zip.c for 16-bit MSDOS (Gilles Vollant)
+- emulate utime() for WIN32 in contrib/untgz (Gilles Vollant)
+- allow several arguments to configure (Tim Mooney, Frodo Looijaard)
+- use libdir and includedir in Makefile.in (Tim Mooney)
+- support shared libraries on OSF1 V4 (Tim Mooney)
+- remove so_locations in "make clean" (Tim Mooney)
+- fix maketree.c compilation error (Glenn, Mark)
+- Python interface to zlib now in Python 1.5 (Jeremy Hylton)
+- new Makefile.riscos (Rich Walker)
+- initialize static descriptors in trees.c for embedded targets (Nick Smith)
+- use "foo-gz" in example.c for RISCOS and VMS (Nick Smith)
+- add the OS/2 files in Makefile.in too (Andrew Zabolotny)
+- fix fdopen and halloc macros for Microsoft C 6.0 (Tom Lane)
+- fix maketree.c to allow clean compilation of inffixed.h (Mark)
+- fix parameter check in deflateCopy (Gunther Nikl)
+- cleanup trees.c, use compressed_len only in debug mode (Christian Spieler)
+- Many portability patches by Christian Spieler:
+ . zutil.c, zutil.h: added "const" for zmem*
+ . Make_vms.com: fixed some typos
+ . Make_vms.com: msdos/Makefile.*: removed zutil.h from some dependency lists
+ . msdos/Makefile.msc: remove "default rtl link library" info from obj files
+ . msdos/Makefile.*: use model-dependent name for the built zlib library
+ . msdos/Makefile.emx, nt/Makefile.emx, nt/Makefile.gcc:
+ new makefiles, for emx (DOS/OS2), emx&rsxnt and mingw32 (Windows 9x / NT)
+- use define instead of typedef for Bytef also for MSC small/medium (Tom Lane)
+- replace __far with _far for better portability (Christian Spieler, Tom Lane)
+- fix test for errno.h in configure (Tim Newsham)
+
+Changes in 1.1.2 (19 March 98)
+- added contrib/minzip, mini zip and unzip based on zlib (Gilles Vollant)
+ See http://www.winimage.com/zLibDll/unzip.html
+- preinitialize the inflate tables for fixed codes, to make the code
+ 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 occurring 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()
View
339 common/dist/zlib/FAQ
@@ -0,0 +1,339 @@
+
+ Frequently Asked Questions about zlib
+
+
+If your question is not there, please check the zlib home page
+http://www.zlib.org which may have more recent information.
+The lastest zlib FAQ is at http://www.gzip.org/zlib/zlib_faq.html
+
+
+ 1. Is zlib Y2K-compliant?
+
+ Yes. zlib doesn't handle dates.
+
+ 2. Where can I get a Windows DLL version?
+
+ The zlib sources can be compiled without change to produce a DLL.
+ See the file win32/DLL_FAQ.txt in the zlib distribution.
+ Pointers to the precompiled DLL are found in the zlib web site at
+ http://www.zlib.org.
+
+ 3. Where can I get a Visual Basic interface to zlib?
+
+ See
+ * http://www.dogma.net/markn/articles/zlibtool/zlibtool.htm
+ * contrib/visual-basic.txt in the zlib distribution
+ * win32/DLL_FAQ.txt in the zlib distribution
+
+ 4. compress() returns Z_BUF_ERROR.
+
+ Make sure that before the call of compress, the length of the compressed
+ buffer is equal to the total size of the compressed buffer and not
+ zero. For Visual Basic, check that this parameter is passed by reference
+ ("as any"), not by value ("as long").
+
+ 5. deflate() or inflate() returns Z_BUF_ERROR.
+
+ Before making the call, make sure that avail_in and avail_out are not
+ zero. When setting the parameter flush equal to Z_FINISH, also make sure
+ that avail_out is big enough to allow processing all pending input.
+ Note that a Z_BUF_ERROR is not fatal--another call to deflate() or
+ inflate() can be made with more input or output space. A Z_BUF_ERROR
+ may in fact be unavoidable depending on how the functions are used, since
+ it is not possible to tell whether or not there is more output pending
+ when strm.avail_out returns with zero.
+
+ 6. Where's the zlib documentation (man pages, etc.)?
+
+ It's in zlib.h for the moment, and Francis S. Lin has converted it to a
+ web page zlib.html. Volunteers to transform this to Unix-style man pages,
+ please contact us (zlib@gzip.org). Examples of zlib usage are in the files
+ example.c and minigzip.c.
+
+ 7. Why don't you use GNU autoconf or libtool or ...?
+
+ Because we would like to keep zlib as a very small and simple
+ package. zlib is rather portable and doesn't need much configuration.
+
+ 8. I found a bug in zlib.
+
+ Most of the time, such problems are due to an incorrect usage of
+ zlib. Please try to reproduce the problem with a small program and send
+ the corresponding source to us at zlib@gzip.org . Do not send
+ multi-megabyte data files without prior agreement.
+
+ 9. Why do I get "undefined reference to gzputc"?
+
+ If "make test" produces something like
+
+ example.o(.text+0x154): undefined reference to `gzputc'
+
+ check that you don't have old files libz.* in /usr/lib, /usr/local/lib or
+ /usr/X11R6/lib. Remove any old versions, then do "make install".
+
+10. I need a Delphi interface to zlib.
+
+ See the contrib/delphi directory in the zlib distribution.
+
+11. Can zlib handle .zip archives?
+
+ Not by itself, no. See the directory contrib/minizip in the zlib
+ distribution.
+
+12. Can zlib handle .Z files?
+
+ No, sorry. You have to spawn an uncompress or gunzip subprocess, or adapt
+ the code of uncompress on your own.
+
+13. How can I make a Unix shared library?
+
+ make clean
+ ./configure -s
+ make
+
+14. How do I install a shared zlib library on Unix?
+
+ After the above, then:
+
+ make install
+
+ However, many flavors of Unix come with a shared zlib already installed.
+ Before going to the trouble of compiling a shared version of zlib and
+ trying to install it, you may want to check if it's already there! If you
+ can #include <zlib.h>, it's there. The -lz option will probably link to it.
+
+15. I have a question about OttoPDF.
+
+ We are not the authors of OttoPDF. The real author is on the OttoPDF web
+ site: Joel Hainley, jhainley@myndkryme.com.
+
+16. Can zlib decode Flate data in an Adobe PDF file?
+
+ Yes. See http://www.fastio.com/ (ClibPDF), or http://www.pdflib.com/ .
+ To modify PDF forms, see http://sourceforge.net/projects/acroformtool/ .
+
+17. Why am I getting this "register_frame_info not found" error on Solaris?
+
+ After installing zlib 1.1.4 on Solaris 2.6, running applications using zlib
+ generates an error such as:
+
+ ld.so.1: rpm: fatal: relocation error: file /usr/local/lib/libz.so:
+ symbol __register_frame_info: referenced symbol not found
+
+ The symbol __register_frame_info is not part of zlib, it is generated by
+ the C compiler (cc or gcc). You must recompile applications using zlib
+ which have this problem. This problem is specific to Solaris. See
+ http://www.sunfreeware.com for Solaris versions of zlib and applications
+ using zlib.
+
+18. Why does gzip give an error on a file I make with compress/deflate?
+
+ The compress and deflate functions produce data in the zlib format, which
+ is different and incompatible with the gzip format. The gz* functions in
+ zlib on the other hand use the gzip format. Both the zlib and gzip
+ formats use the same compressed data format internally, but have different
+ headers and trailers around the compressed data.
+
+19. Ok, so why are there two different formats?
+
+ The gzip format was designed to retain the directory information about
+ a single file, such as the name and last modification date. The zlib
+ format on the other hand was designed for in-memory and communication
+ channel applications, and has a much more compact header and trailer and
+ uses a faster integrity check than gzip.
+
+20. Well that's nice, but how do I make a gzip file in memory?
+
+ You can request that deflate write the gzip format instead of the zlib
+ format using deflateInit2(). You can also request that inflate decode
+ the gzip format using inflateInit2(). Read zlib.h for more details.
+
+21. Is zlib thread-safe?
+
+ Yes. However any library routines that zlib uses and any application-
+ provided memory allocation routines must also be thread-safe. zlib's gz*
+ functions use stdio library routines, and most of zlib's functions use the
+ library memory allocation routines by default. zlib's Init functions allow
+ for the application to provide custom memory allocation routines.
+
+ Of course, you should only operate on any given zlib or gzip stream from a
+ single thread at a time.
+
+22. Can I use zlib in my commercial application?
+
+ Yes. Please read the license in zlib.h.
+
+23. Is zlib under the GNU license?
+
+ No. Please read the license in zlib.h.
+
+24. The license says that altered source versions must be "plainly marked". So
+ what exactly do I need to do to meet that requirement?
+
+ You need to change the ZLIB_VERSION and ZLIB_VERNUM #defines in zlib.h. In
+ particular, the final version number needs to be changed to "f", and an
+ identification string should be appended to ZLIB_VERSION. Version numbers
+ x.x.x.f are reserved for modifications to zlib by others than the zlib
+ maintainers. For example, if the version of the base zlib you are altering
+ is "1.2.3.4", then in zlib.h you should change ZLIB_VERNUM to 0x123f, and
+ ZLIB_VERSION to something like "1.2.3.f-zachary-mods-v3". You can also
+ update the version strings in deflate.c and inftrees.c.
+
+ For altered source distributions, you should also note the origin and
+ nature of the changes in zlib.h, as well as in ChangeLog and README, along
+ with the dates of the alterations. The origin should include at least your
+ name (or your company's name), and an email address to contact for help or
+ issues with the library.
+
+ Note that distributing a compiled zlib library along with zlib.h and
+ zconf.h is also a source distribution, and so you should change
+ ZLIB_VERSION and ZLIB_VERNUM and note the origin and nature of the changes
+ in zlib.h as you would for a full source distribution.
+
+25. Will zlib work on a big-endian or little-endian architecture, and can I
+ exchange compressed data between them?
+
+ Yes and yes.
+
+26. Will zlib work on a 64-bit machine?
+
+ It should. It has been tested on 64-bit machines, and has no dependence
+ on any data types being limited to 32-bits in length. If you have any
+ difficulties, please provide a complete problem report to zlib@gzip.org
+
+27. Will zlib decompress data from the PKWare Data Compression Library?
+
+ No. The PKWare DCL uses a completely different compressed data format
+ than does PKZIP and zlib. However, you can look in zlib's contrib/blast
+ directory for a possible solution to your problem.
+
+28. Can I access data randomly in a compressed stream?
+
+ No, not without some preparation. If when compressing you periodically
+ use Z_FULL_FLUSH, carefully write all the pending data at those points,
+ and keep an index of those locations, then you can start decompression
+ at those points. You have to be careful to not use Z_FULL_FLUSH too
+ often, since it can significantly degrade compression.
+
+29. Does zlib work on MVS, OS/390, CICS, etc.?
+
+ We don't know for sure. We have heard occasional reports of success on
+ these systems. If you do use it on one of these, please provide us with
+ a report, instructions, and patches that we can reference when we get
+ these questions. Thanks.
+
+30. Is there some simpler, easier to read version of inflate I can look at
+ to understand the deflate format?
+
+ First off, you should read RFC 1951. Second, yes. Look in zlib's
+ contrib/puff directory.
+
+31. Does zlib infringe on any patents?
+
+ As far as we know, no. In fact, that was originally the whole point behind
+ zlib. Look here for some more information:
+
+ http://www.gzip.org/#faq11
+
+32. Can zlib work with greater than 4 GB of data?
+
+ Yes. inflate() and deflate() will process any amount of data correctly.
+ Each call of inflate() or deflate() is limited to input and output chunks
+ of the maximum value that can be stored in the compiler's "unsigned int"
+ type, but there is no limit to the number of chunks. Note however that the
+ strm.total_in and strm_total_out counters may be limited to 4 GB. These
+ counters are provided as a convenience and are not used internally by
+ inflate() or deflate(). The application can easily set up its own counters
+ updated after each call of inflate() or deflate() to count beyond 4 GB.
+ compress() and uncompress() may be limited to 4 GB, since they operate in a
+ single call. gzseek() and gztell() may be limited to 4 GB depending on how
+ zlib is compiled. See the zlibCompileFlags() function in zlib.h.
+
+ The word "may" appears several times above since there is a 4 GB limit
+ only if the compiler's "long" type is 32 bits. If the compiler's "long"
+ type is 64 bits, then the limit is 16 exabytes.
+
+33. Does zlib have any security vulnerabilities?
+
+ The only one that we are aware of is potentially in gzprintf(). If zlib
+ is compiled to use sprintf() or vsprintf(), then there is no protection
+ against a buffer overflow of a 4K string space, other than the caller of
+ gzprintf() assuring that the output will not exceed 4K. On the other
+ hand, if zlib is compiled to use snprintf() or vsnprintf(), which should
+ normally be the case, then there is no vulnerability. The ./configure
+ script will display warnings if an insecure variation of sprintf() will
+ be used by gzprintf(). Also the zlibCompileFlags() function will return
+ information on what variant of sprintf() is used by gzprintf().
+
+ If you don't have snprintf() or vsnprintf() and would like one, you can
+ find a portable implementation here:
+
+ http://www.ijs.si/software/snprintf/
+
+ Note that you should be using the most recent version of zlib. Versions
+ 1.1.3 and before were subject to a double-free vulnerability.
+
+34. Is there a Java version of zlib?
+
+ Probably what you want is to use zlib in Java. zlib is already included
+ as part of the Java SDK in the java.util.zip package. If you really want
+ a version of zlib written in the Java language, look on the zlib home
+ page for links: http://www.zlib.org/
+
+35. I get this or that compiler or source-code scanner warning when I crank it
+ up to maximally-pedantic. Can't you guys write proper code?
+
+ Many years ago, we gave up attempting to avoid warnings on every compiler
+ in the universe. It just got to be a waste of time, and some compilers
+ were downright silly. So now, we simply make sure that the code always
+ works.
+
+36. Valgrind (or some similar memory access checker) says that deflate is
+ performing a conditional jump that depends on an uninitialized value.
+ Isn't that a bug?
+
+ No. That is intentional for performance reasons, and the output of
+ deflate is not affected. This only started showing up recently since
+ zlib 1.2.x uses malloc() by default for allocations, whereas earlier
+ versions used calloc(), which zeros out the allocated memory.
+
+37. Will zlib read the (insert any ancient or arcane format here) compressed
+ data format?
+
+ Probably not. Look in the comp.compression FAQ for pointers to various
+ formats and associated software.
+
+38. How can I encrypt/decrypt zip files with zlib?
+
+ zlib doesn't support encryption. The original PKZIP encryption is very weak
+ and can be broken with freely available programs. To get strong encryption,
+ use GnuPG, http://www.gnupg.org/ , which already includes zlib compression.
+ For PKZIP compatible "encryption", look at http://www.info-zip.org/
+
+39. What's the difference between the "gzip" and "deflate" HTTP 1.1 encodings?
+
+ "gzip" is the gzip format, and "deflate" is the zlib format. They should
+ probably have called the second one "zlib" instead to avoid confusion
+ with the raw deflate compressed data format. While the HTTP 1.1 RFC 2616
+ correctly points to the zlib specification in RFC 1950 for the "deflate"
+ transfer encoding, there have been reports of servers and browsers that
+ incorrectly produce or expect raw deflate data per the deflate
+ specficiation in RFC 1951, most notably Microsoft. So even though the
+ "deflate" transfer encoding using the zlib format would be the more
+ efficient approach (and in fact exactly what the zlib format was designed
+ for), using the "gzip" transfer encoding is probably more reliable due to
+ an unfortunate choice of name on the part of the HTTP 1.1 authors.
+
+ Bottom line: use the gzip format for HTTP 1.1 encoding.
+
+40. Does zlib support the new "Deflate64" format introduced by PKWare?
+
+ No. PKWare has apparently decided to keep that format proprietary, since
+ they have not documented it as they have previous compression formats.
+ In any case, the compression improvements are so modest compared to other
+ more modern approaches, that it's not worth the effort to implement.
+
+41. Can you please sign these lengthy legal documents and fax them back to us
+ so that we can use your software in our product?
+
+ No. Go away. Shoo.
View
51 common/dist/zlib/INDEX
@@ -0,0 +1,51 @@
+ChangeLog history of changes
+FAQ Frequently Asked Questions about zlib
+INDEX this file
+Makefile makefile for Unix (generated by configure)
+Makefile.in makefile for Unix (template for configure)
+README guess what
+algorithm.txt description of the (de)compression algorithm
+configure configure script for Unix
+zconf.in.h template for zconf.h (used by configure)
+
+amiga/ makefiles for Amiga SAS C
+as400/ makefiles for IBM AS/400
+msdos/ makefiles for MSDOS
+old/ makefiles for various architectures and zlib documentation
+ files that have not yet been updated for zlib 1.2.x
+projects/ projects for various Integrated Development Environments
+qnx/ makefiles for QNX
+win32/ makefiles for Windows
+
+ zlib public header files (must be kept):
+zconf.h
+zlib.h
+
+ private source files used to build the zlib library:
+adler32.c
+compress.c
+crc32.c
+crc32.h
+deflate.c
+deflate.h
+gzio.c
+infback.c
+inffast.c
+inffast.h
+inffixed.h
+inflate.c
+inflate.h
+inftrees.c
+inftrees.h
+trees.c
+trees.h
+uncompr.c
+zutil.c
+zutil.h
+
+ source files for sample programs:
+example.c
+minigzip.c
+
+ unsupported contribution by third parties
+See contrib/README.contrib
View
154 common/dist/zlib/Makefile
@@ -0,0 +1,154 @@
+# Makefile for zlib
+# Copyright (C) 1995-2005 Jean-loup Gailly.
+# For conditions of distribution and use, see copyright notice in zlib.h
+
+# To compile and test, type:
+# ./configure; make test
+# The call of configure is optional if you don't have special requirements
+# If you wish to build zlib as a shared library, use: ./configure -s
+
+# To use the asm code, type:
+# cp contrib/asm?86/match.S ./match.S
+# make LOC=-DASMV OBJA=match.o
+
+# To install /usr/local/lib/libz.* and /usr/local/include/zlib.h, type:
+# make install
+# To install in $HOME instead of /usr/local, use:
+# make install prefix=$HOME
+
+CC=cc
+
+CFLAGS=-O
+#CFLAGS=-O -DMAX_WBITS=14 -DMAX_MEM_LEVEL=7
+#CFLAGS=-g -DDEBUG
+#CFLAGS=-O3 -Wall -Wwrite-strings -Wpointer-arith -Wconversion \
+# -Wstrict-prototypes -Wmissing-prototypes
+
+LDFLAGS=libz.a
+LDSHARED=$(CC)
+CPP=$(CC) -E
+
+LIBS=libz.a
+SHAREDLIB=libz.so
+SHAREDLIBV=libz.so.1.2.3
+SHAREDLIBM=libz.so.1
+
+AR=ar rc
+RANLIB=ranlib
+TAR=tar
+SHELL=/bin/sh
+EXE=
+
+prefix = /usr/local
+exec_prefix = ${prefix}
+libdir = ${exec_prefix}/lib
+includedir = ${prefix}/include
+mandir = ${prefix}/share/man
+man3dir = ${mandir}/man3
+
+OBJS = adler32.o compress.o crc32.o gzio.o uncompr.o deflate.o trees.o \
+ zutil.o inflate.o infback.o inftrees.o inffast.o
+
+OBJA =
+# to use the asm code: make OBJA=match.o
+
+TEST_OBJS = example.o minigzip.o
+
+all: example$(EXE) minigzip$(EXE)
+
+check: test
+test: all
+ @LD_LIBRARY_PATH=.:$(LD_LIBRARY_PATH) ; export LD_LIBRARY_PATH; \
+ echo hello world | ./minigzip | ./minigzip -d || \
+ echo ' *** minigzip test FAILED ***' ; \
+ if ./example; then \
+ echo ' *** zlib test OK ***'; \
+ else \
+ echo ' *** zlib test FAILED ***'; \
+ fi
+
+libz.a: $(OBJS) $(OBJA)
+ $(AR) $@ $(OBJS) $(OBJA)
+ -@ ($(RANLIB) $@ || true) >/dev/null 2>&1
+
+match.o: match.S
+ $(CPP) match.S > _match.s
+ $(CC) -c _match.s
+ mv _match.o match.o
+ rm -f _match.s
+
+$(SHAREDLIBV): $(OBJS)
+ $(LDSHARED) -o $@ $(OBJS)
+ rm -f $(SHAREDLIB) $(SHAREDLIBM)
+ ln -s $@ $(SHAREDLIB)
+ ln -s $@ $(SHAREDLIBM)
+
+example$(EXE): example.o $(LIBS)
+ $(CC) $(CFLAGS) -o $@ example.o $(LDFLAGS)
+
+minigzip$(EXE): minigzip.o $(LIBS)
+ $(CC) $(CFLAGS) -o $@ minigzip.o $(LDFLAGS)
+
+install: $(LIBS)
+ -@if [ ! -d $(exec_prefix) ]; then mkdir -p $(exec_prefix); fi
+ -@if [ ! -d $(includedir) ]; then mkdir -p $(includedir); fi
+ -@if [ ! -d $(libdir) ]; then mkdir -p $(libdir); fi
+ -@if [ ! -d $(man3dir) ]; then mkdir -p $(man3dir); fi
+ cp zlib.h zconf.h $(includedir)
+ chmod 644 $(includedir)/zlib.h $(includedir)/zconf.h
+ cp $(LIBS) $(libdir)
+ cd $(libdir); chmod 755 $(LIBS)
+ -@(cd $(libdir); $(RANLIB) libz.a || true) >/dev/null 2>&1
+ cd $(libdir); if test -f $(SHAREDLIBV); then \
+ rm -f $(SHAREDLIB) $(SHAREDLIBM); \
+ ln -s $(SHAREDLIBV) $(SHAREDLIB); \
+ ln -s $(SHAREDLIBV) $(SHAREDLIBM); \
+ (ldconfig || true) >/dev/null 2>&1; \
+ fi
+ cp zlib.3 $(man3dir)
+ chmod 644 $(man3dir)/zlib.3
+# The ranlib in install is needed on NeXTSTEP which checks file times
+# ldconfig is for Linux
+
+uninstall:
+ cd $(includedir); \
+ cd $(libdir); rm -f libz.a; \
+ if test -f $(SHAREDLIBV); then \
+ rm -f $(SHAREDLIBV) $(SHAREDLIB) $(SHAREDLIBM); \
+ fi
+ cd $(man3dir); rm -f zlib.3
+
+mostlyclean: clean
+clean:
+ rm -f *.o *~ example$(EXE) minigzip$(EXE) \
+ libz.* foo.gz so_locations \
+ _match.s maketree contrib/infback9/*.o
+
+maintainer-clean: distclean
+distclean: clean
+ cp -p Makefile.in Makefile
+ cp -p zconf.in.h zconf.h
+ rm -f .DS_Store
+
+tags:
+ etags *.[ch]
+
+depend:
+ makedepend -- $(CFLAGS) -- *.[ch]
+
+# DO NOT DELETE THIS LINE -- make depend depends on it.
+
+adler32.o: zlib.h zconf.h
+compress.o: zlib.h zconf.h
+crc32.o: crc32.h zlib.h zconf.h
+deflate.o: deflate.h zutil.h zlib.h zconf.h
+example.o: zlib.h zconf.h
+gzio.o: zutil.h zlib.h zconf.h
+inffast.o: zutil.h zlib.h zconf.h inftrees.h inflate.h inffast.h
+inflate.o: zutil.h zlib.h zconf.h inftrees.h inflate.h inffast.h
+infback.o: zutil.h zlib.h zconf.h inftrees.h inflate.h inffast.h
+inftrees.o: zutil.h zlib.h zconf.h inftrees.h
+minigzip.o: zlib.h zconf.h
+trees.o: deflate.h zutil.h zlib.h zconf.h trees.h
+uncompr.o: zlib.h zconf.h
+zutil.o: zutil.h zlib.h zconf.h
View
154 common/dist/zlib/Makefile.in
@@ -0,0 +1,154 @@
+# Makefile for zlib
+# Copyright (C) 1995-2005 Jean-loup Gailly.
+# For conditions of distribution and use, see copyright notice in zlib.h
+
+# To compile and test, type:
+# ./configure; make test
+# The call of configure is optional if you don't have special requirements
+# If you wish to build zlib as a shared library, use: ./configure -s
+
+# To use the asm code, type:
+# cp contrib/asm?86/match.S ./match.S
+# make LOC=-DASMV OBJA=match.o
+
+# To install /usr/local/lib/libz.* and /usr/local/include/zlib.h, type:
+# make install
+# To install in $HOME instead of /usr/local, use:
+# make install prefix=$HOME
+
+CC=cc
+
+CFLAGS=-O
+#CFLAGS=-O -DMAX_WBITS=14 -DMAX_MEM_LEVEL=7
+#CFLAGS=-g -DDEBUG
+#CFLAGS=-O3 -Wall -Wwrite-strings -Wpointer-arith -Wconversion \
+# -Wstrict-prototypes -Wmissing-prototypes
+
+LDFLAGS=libz.a
+LDSHARED=$(CC)
+CPP=$(CC) -E
+
+LIBS=libz.a
+SHAREDLIB=libz.so
+SHAREDLIBV=libz.so.1.2.3
+SHAREDLIBM=libz.so.1
+
+AR=ar rc
+RANLIB=ranlib
+TAR=tar
+SHELL=/bin/sh
+EXE=
+
+prefix = /usr/local
+exec_prefix = ${prefix}
+libdir = ${exec_prefix}/lib
+includedir = ${prefix}/include
+mandir = ${prefix}/share/man
+man3dir = ${mandir}/man3
+
+OBJS = adler32.o compress.o crc32.o gzio.o uncompr.o deflate.o trees.o \
+ zutil.o inflate.o infback.o inftrees.o inffast.o
+
+OBJA =
+# to use the asm code: make OBJA=match.o
+
+TEST_OBJS = example.o minigzip.o
+
+all: example$(EXE) minigzip$(EXE)
+
+check: test
+test: all
+ @LD_LIBRARY_PATH=.:$(LD_LIBRARY_PATH) ; export LD_LIBRARY_PATH; \
+ echo hello world | ./minigzip | ./minigzip -d || \
+ echo ' *** minigzip test FAILED ***' ; \
+ if ./example; then \
+ echo ' *** zlib test OK ***'; \
+ else \
+ echo ' *** zlib test FAILED ***'; \
+ fi
+
+libz.a: $(OBJS) $(OBJA)
+ $(AR) $@ $(OBJS) $(OBJA)
+ -@ ($(RANLIB) $@ || true) >/dev/null 2>&1
+
+match.o: match.S
+ $(CPP) match.S > _match.s
+ $(CC) -c _match.s
+ mv _match.o match.o
+ rm -f _match.s
+
+$(SHAREDLIBV): $(OBJS)
+ $(LDSHARED) -o $@ $(OBJS)
+ rm -f $(SHAREDLIB) $(SHAREDLIBM)
+ ln -s $@ $(SHAREDLIB)
+ ln -s $@ $(SHAREDLIBM)
+
+example$(EXE): example.o $(LIBS)
+ $(CC) $(CFLAGS) -o $@ example.o $(LDFLAGS)
+
+minigzip$(EXE): minigzip.o $(LIBS)
+ $(CC) $(CFLAGS) -o $@ minigzip.o $(LDFLAGS)
+
+install: $(LIBS)
+ -@if [ ! -d $(exec_prefix) ]; then mkdir -p $(exec_prefix); fi
+ -@if [ ! -d $(includedir) ]; then mkdir -p $(includedir); fi
+ -@if [ ! -d $(libdir) ]; then mkdir -p $(libdir); fi
+ -@if [ ! -d $(man3dir) ]; then mkdir -p $(man3dir); fi
+ cp zlib.h zconf.h $(includedir)
+ chmod 644 $(includedir)/zlib.h $(includedir)/zconf.h
+ cp $(LIBS) $(libdir)
+ cd $(libdir); chmod 755 $(LIBS)
+ -@(cd $(libdir); $(RANLIB) libz.a || true) >/dev/null 2>&1
+ cd $(libdir); if test -f $(SHAREDLIBV); then \
+ rm -f $(SHAREDLIB) $(SHAREDLIBM); \
+ ln -s $(SHAREDLIBV) $(SHAREDLIB); \
+ ln -s $(SHAREDLIBV) $(SHAREDLIBM); \
+ (ldconfig || true) >/dev/null 2>&1; \
+ fi
+ cp zlib.3 $(man3dir)
+ chmod 644 $(man3dir)/zlib.3
+# The ranlib in install is needed on NeXTSTEP which checks file times
+# ldconfig is for Linux
+
+uninstall:
+ cd $(includedir); \
+ cd $(libdir); rm -f libz.a; \
+ if test -f $(SHAREDLIBV); then \
+ rm -f $(SHAREDLIBV) $(SHAREDLIB) $(SHAREDLIBM); \
+ fi
+ cd $(man3dir); rm -f zlib.3
+
+mostlyclean: clean
+clean:
+ rm -f *.o *~ example$(EXE) minigzip$(EXE) \
+ libz.* foo.gz so_locations \
+ _match.s maketree contrib/infback9/*.o
+
+maintainer-clean: distclean
+distclean: clean
+ cp -p Makefile.in Makefile
+ cp -p zconf.in.h zconf.h
+ rm -f .DS_Store
+
+tags:
+ etags *.[ch]
+
+depend:
+ makedepend -- $(CFLAGS) -- *.[ch]
+
+# DO NOT DELETE THIS LINE -- make depend depends on it.
+
+adler32.o: zlib.h zconf.h
+compress.o: zlib.h zconf.h
+crc32.o: crc32.h zlib.h zconf.h
+deflate.o: deflate.h zutil.h zlib.h zconf.h
+example.o: zlib.h zconf.h
+gzio.o: zutil.h zlib.h zconf.h
+inffast.o: zutil.h zlib.h zconf.h inftrees.h inflate.h inffast.h
+inflate.o: zutil.h zlib.h zconf.h inftrees.h inflate.h inffast.h
+infback.o: zutil.h zlib.h zconf.h inftrees.h inflate.h inffast.h
+inftrees.o: zutil.h zlib.h zconf.h inftrees.h
+minigzip.o: zlib.h zconf.h
+trees.o: deflate.h zutil.h zlib.h zconf.h trees.h
+uncompr.o: zlib.h zconf.h
+zutil.o: zutil.h zlib.h zconf.h
View
125 common/dist/zlib/README
@@ -0,0 +1,125 @@
+ZLIB DATA COMPRESSION LIBRARY
+
+zlib 1.2.3 is a general purpose data compression library. All the code is
+thread safe. The data format used by the zlib library is described by RFCs
+(Request for Comments) 1950 to 1952 in the files
+http://www.ietf.org/rfc/rfc1950.txt (zlib format), rfc1951.txt (deflate format)
+and rfc1952.txt (gzip format). These documents are also available in other
+formats from ftp://ftp.uu.net/graphics/png/documents/zlib/zdoc-index.html
+
+All functions of the compression library are documented in the file zlib.h
+(volunteer to write man pages welcome, contact zlib@gzip.org). A usage example
+of the library is given in the file example.c which also tests that the library
+is working correctly. Another example is given in the file minigzip.c. The
+compression library itself is composed of all source files except example.c and
+minigzip.c.
+
+To compile all files and run the test program, follow the instructions given at
+the top of Makefile. In short "make test; make install" should work for most
+machines. For Unix: "./configure; make test; make install". For MSDOS, use one
+of the special makefiles such as Makefile.msc. For VMS, use make_vms.com.
+
+Questions about zlib should be sent to <zlib@gzip.org>, or to Gilles Vollant
+<info@winimage.com> for the Windows DLL version. The zlib home page is
+http://www.zlib.org or http://www.gzip.org/zlib/ Before reporting a problem,
+please check this site to verify that you have the latest version of zlib;
+otherwise get the latest version and check whether the problem still exists or
+not.
+
+PLEASE read the zlib FAQ http://www.gzip.org/zlib/zlib_faq.html before asking
+for help.
+
+Mark Nelson <markn@ieee.org> wrote an article about zlib for the Jan. 1997
+issue of Dr. Dobb's Journal; a copy of the article is available in
+http://dogma.net/markn/articles/zlibtool/zlibtool.htm
+
+The changes made in version 1.2.3 are documented in the file ChangeLog.
+
+Unsupported third party contributions are provided in directory "contrib".
+
+A Java implementation of zlib is available in the Java Development Kit
+http://java.sun.com/j2se/1.4.2/docs/api/java/util/zip/package-summary.html
+See the zlib home page http://www.zlib.org for details.
+
+A Perl interface to zlib written by Paul Marquess <pmqs@cpan.org> is in the
+CPAN (Comprehensive Perl Archive Network) sites
+http://www.cpan.org/modules/by-module/Compress/
+
+A Python interface to zlib written by A.M. Kuchling <amk@amk.ca> is
+available in Python 1.5 and later versions, see
+http://www.python.org/doc/lib/module-zlib.html
+
+A zlib binding for TCL written by Andreas Kupries <a.kupries@westend.com> is
+availlable at http://www.oche.de/~akupries/soft/trf/trf_zip.html
+
+An experimental package to read and write files in .zip format, written on top
+of zlib by Gilles Vollant <info@winimage.com>, is available in the
+contrib/minizip directory of zlib.
+
+
+Notes for some targets:
+
+- For Windows DLL versions, please see win32/DLL_FAQ.txt
+
+- For 64-bit Irix, deflate.c must be compiled without any optimization. With
+ -O, one libpng test fails. The test works in 32 bit mode (with the -n32
+ compiler flag). The compiler bug has been reported to SGI.
+
+- zlib doesn't work with gcc 2.6.3 on a DEC 3000/300LX under OSF/1 2.1 it works
+ when compiled with cc.
+
+- On Digital Unix 4.0D (formely OSF/1) on AlphaServer, the cc option -std1 is
+ necessary to get gzprintf working correctly. This is done by configure.
+
+- zlib doesn't work on HP-UX 9.05 with some versions of /bin/cc. It works with
+ other compilers. Use "make test" to check your compiler.
+
+- gzdopen is not supported on RISCOS, BEOS and by some Mac compilers.
+
+- For PalmOs, see http://palmzlib.sourceforge.net/
+
+- When building a shared, i.e. dynamic library on Mac OS X, the library must be
+ installed before testing (do "make install" before "make test"), since the
+ library location is specified in the library.
+
+
+Acknowledgments:
+
+ The deflate format used by zlib was defined by Phil Katz. The deflate
+ and zlib specifications were written by L. Peter Deutsch. Thanks to all the
+ people who reported problems and suggested various improvements in zlib;
+ they are too numerous to cite here.
+
+Copyright notice:
+
+ (C) 1995-2004 Jean-loup Gailly and Mark Adler
+
+ This software is provided 'as-is', without any express or implied
+ warranty. In no event will the authors be held liable for any damages
+ arising from the use of this software.
+
+ Permission is granted to anyone to use this software for any purpose,
+ including commercial applications, and to alter it and redistribute it
+ freely, subject to the following restrictions:
+
+ 1. The origin of this software must not be misrepresented; you must not
+ claim that you wrote the original software. If you use this software
+ in a product, an acknowledgment in the product documentation would be
+ appreciated but is not required.
+ 2. Altered source versions must be plainly marked as such, and must not be
+ misrepresented as being the original software.
+ 3. This notice may not be removed or altered from any source distribution.
+
+ Jean-loup Gailly Mark Adler
+ jloup@gzip.org madler@alumni.caltech.edu
+
+If you use the zlib library in a product, we would appreciate *not*
+receiving lengthy legal documents to sign. The sources are provided
+for free but without warranty of any kind. The library has been
+entirely written by Jean-loup Gailly and Mark Adler; it does not
+include third-party code.
+
+If you redistribute modified sources, we would appreciate that you include
+in the file ChangeLog history information documenting your changes. Please
+read the FAQ for more information on the distribution of modified source
+versions.
View
151 common/dist/zlib/adler32.c
@@ -0,0 +1,151 @@
+/* $NetBSD: adler32.c,v 1.1.1.1 2006/01/14 20:10:24 christos Exp $ */
+
+/* adler32.c -- compute the Adler-32 checksum of a data stream
+ * Copyright (C) 1995-2004 Mark Adler
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+
+/* @(#) Id */
+
+#define ZLIB_INTERNAL
+#include "zlib.h"
+
+#define BASE 65521UL /* largest prime smaller than 65536 */
+#define NMAX 5552
+/* NMAX is the largest n such that 255n(n+1)/2 + (n+1)(BASE-1) <= 2^32-1 */
+
+#define DO1(buf,i) {adler += (buf)[i]; sum2 += adler;}
+#define DO2(buf,i) DO1(buf,i); DO1(buf,i+1);
+#define DO4(buf,i) DO2(buf,i); DO2(buf,i+2);
+#define DO8(buf,i) DO4(buf,i); DO4(buf,i+4);
+#define DO16(buf) DO8(buf,0); DO8(buf,8);
+
+/* use NO_DIVIDE if your processor does not do division in hardware */
+#ifdef NO_DIVIDE
+# define MOD(a) \
+ do { \
+ if (a >= (BASE << 16)) a -= (BASE << 16); \
+ if (a >= (BASE << 15)) a -= (BASE << 15); \
+ if (a >= (BASE << 14)) a -= (BASE << 14); \
+ if (a >= (BASE << 13)) a -= (BASE << 13); \
+ if (a >= (BASE << 12)) a -= (BASE << 12); \
+ if (a >= (BASE << 11)) a -= (BASE << 11); \
+ if (a >= (BASE << 10)) a -= (BASE << 10); \
+ if (a >= (BASE << 9)) a -= (BASE << 9); \
+ if (a >= (BASE << 8)) a -= (BASE << 8); \
+ if (a >= (BASE << 7)) a -= (BASE << 7); \
+ if (a >= (BASE << 6)) a -= (BASE << 6); \
+ if (a >= (BASE << 5)) a -= (BASE << 5); \
+ if (a >= (BASE << 4)) a -= (BASE << 4); \
+ if (a >= (BASE << 3)) a -= (BASE << 3); \
+ if (a >= (BASE << 2)) a -= (BASE << 2); \
+ if (a >= (BASE << 1)) a -= (BASE << 1); \
+ if (a >= BASE) a -= BASE; \
+ } while (0)
+# define MOD4(a) \
+ do { \
+ if (a >= (BASE << 4)) a -= (BASE << 4); \
+ if (a >= (BASE << 3)) a -= (BASE << 3); \
+ if (a >= (BASE << 2)) a -= (BASE << 2); \
+ if (a >= (BASE << 1)) a -= (BASE << 1); \
+ if (a >= BASE) a -= BASE; \
+ } while (0)
+#else
+# define MOD(a) a %= BASE
+# define MOD4(a) a %= BASE
+#endif
+
+/* ========================================================================= */
+uLong ZEXPORT adler32(adler, buf, len)
+ uLong adler;
+ const Bytef *buf;
+ uInt len;
+{
+ unsigned long sum2;
+ unsigned n;
+
+ /* split Adler-32 into component sums */
+ sum2 = (adler >> 16) & 0xffff;
+ adler &= 0xffff;
+
+ /* in case user likes doing a byte at a time, keep it fast */
+ if (len == 1) {
+ adler += buf[0];
+ if (adler >= BASE)
+ adler -= BASE;
+ sum2 += adler;
+ if (sum2 >= BASE)
+ sum2 -= BASE;
+ return adler | (sum2 << 16);
+ }
+
+ /* initial Adler-32 value (deferred check for len == 1 speed) */
+ if (buf == Z_NULL)
+ return 1L;
+
+ /* in case short lengths are provided, keep it somewhat fast */
+ if (len < 16) {
+ while (len--) {
+ adler += *buf++;
+ sum2 += adler;
+ }
+ if (adler >= BASE)
+ adler -= BASE;
+ MOD4(sum2); /* only added so many BASE's */
+ return adler | (sum2 << 16);
+ }
+
+ /* do length NMAX blocks -- requires just one modulo operation */
+ while (len >= NMAX) {
+ len -= NMAX;
+ n = NMAX / 16; /* NMAX is divisible by 16 */
+ do {
+ DO16(buf); /* 16 sums unrolled */
+ buf += 16;
+ } while (--n);
+ MOD(adler);
+ MOD(sum2);
+ }
+
+ /* do remaining bytes (less than NMAX, still just one modulo) */
+ if (len) { /* avoid modulos if none remaining */
+ while (len >= 16) {
+ len -= 16;
+ DO16(buf);
+ buf += 16;
+ }
+ while (len--) {
+ adler += *buf++;
+ sum2 += adler;
+ }
+ MOD(adler);
+ MOD(sum2);
+ }
+
+ /* return recombined sums */
+ return adler | (sum2 << 16);
+}
+
+/* ========================================================================= */
+uLong ZEXPORT adler32_combine(adler1, adler2, len2)
+ uLong adler1;
+ uLong adler2;
+ z_off_t len2;
+{
+ unsigned long sum1;
+ unsigned long sum2;
+ unsigned rem;
+
+ /* the derivation of this formula is left as an exercise for the reader */
+ rem = (unsigned)(len2 % BASE);
+ sum1 = adler1 & 0xffff;
+ sum2 = rem * sum1;
+ MOD(sum2);
+ sum1 += (adler2 & 0xffff) + BASE - 1;
+ sum2 += ((adler1 >> 16) & 0xffff) + ((adler2 >> 16) & 0xffff) + BASE - rem;
+ if (sum1 > BASE) sum1 -= BASE;
+ if (sum1 > BASE) sum1 -= BASE;
+ if (sum2 > (BASE << 1)) sum2 -= (BASE << 1);
+ if (sum2 > BASE) sum2 -= BASE;
+ return sum1 | (sum2 << 16);
+}
View
209 common/dist/zlib/algorithm.txt
@@ -0,0 +1,209 @@
+1. Compression algorithm (deflate)
+
+The deflation algorithm used by gzip (also zip and zlib) is a variation of
+LZ77 (Lempel-Ziv 1977, see reference below). It finds duplicated strings in
+the input data. The second occurrence of a string is replaced by a
+pointer to the previous string, in the form of a pair (distance,
+length). Distances are limited to 32K bytes, and lengths are limited
+to 258 bytes. When a string does not occur anywhere in the previous
+32K bytes, it is emitted as a sequence of literal bytes. (In this
+description, `string' must be taken as an arbitrary sequence of bytes,
+and is not restricted to printable characters.)
+
+Literals or match lengths are compressed with one Huffman tree, and
+match distances are compressed with another tree. The trees are stored
+in a compact form at the start of each block. The blocks can have any
+size (except that the compressed data for one block must fit in
+available memory). A block is terminated when deflate() determines that
+it would be useful to start another block with fresh trees. (This is
+somewhat similar to the behavior of LZW-based _compress_.)
+
+Duplicated strings are found using a hash table. All input strings of
+length 3 are inserted in the hash table. A hash index is computed for
+the next 3 bytes. If the hash chain for this index is not empty, all
+strings in the chain are compared with the current input string, and
+the longest match is selected.
+
+The hash chains are searched starting with the most recent strings, to
+favor small distances and thus take advantage of the Huffman encoding.
+The hash chains are singly linked. There are no deletions from the
+hash chains, the algorithm simply discards matches that are too old.
+
+To avoid a worst-case situation, very long hash chains are arbitrarily
+truncated at a certain length, determined by a runtime option (level
+parameter of deflateInit). So deflate() does not always find the longest
+possible match but generally finds a match which is long enough.
+
+deflate() also defers the selection of matches with a lazy evaluation
+mechanism. After a match of length N has been found, deflate() searches for
+a longer match at the next input byte. If a longer match is found, the
+previous match is truncated to a length of one (thus producing a single
+literal byte) and the process of lazy evaluation begins again. Otherwise,
+the original match is kept, and the next match search is attempted only N
+steps later.
+
+The lazy match evaluation is also subject to a runtime parameter. If
+the current match is long enough, deflate() reduces the search for a longer
+match, thus speeding up the whole process. If compression ratio is more
+important than speed, deflate() attempts a complete second search even if
+the first match is already long enough.
+
+The lazy match evaluation is not performed for the fastest compression
+modes (level parameter 1 to 3). For these fast modes, new strings
+are inserted in the hash table only when no match was found, or
+when the match is not too long. This degrades the compression ratio
+but saves time since there are both fewer insertions and fewer searches.
+
+
+2. Decompression algorithm (inflate)
+
+2.1 Introduction
+
+The key question is how to represent a Huffman code (or any prefix code) so
+that you can decode fast. The most important characteristic is that shorter
+codes are much more common than longer codes, so pay attention to decoding the
+short codes fast, and let the long codes take longer to decode.
+
+inflate() sets up a first level table that covers some number of bits of
+input less than the length of longest code. It gets that many bits from the
+stream, and looks it up in the table. The table will tell if the next
+code is that many bits or less and how many, and if it is, it will tell
+the value, else it will point to the next level table for which inflate()
+grabs more bits and tries to decode a longer code.
+
+How many bits to make the first lookup is a tradeoff between the time it
+takes to decode and the time it takes to build the table. If building the
+table took no time (and if you had infinite memory), then there would only
+be a first level table to cover all the way to the longest code. However,
+building the table ends up taking a lot longer for more bits since short
+codes are replicated many times in such a table. What inflate() does is
+simply to make the number of bits in the first table a variable, and then
+to set that variable for the maximum speed.
+
+For inflate, which has 286 possible codes for the literal/length tree, the size
+of the first table is nine bits. Also the distance trees have 30 possible
+values, and the size of the first table is six bits. Note that for each of
+those cases, the table ended up one bit longer than the ``average'' code
+length, i.e. the code length of an approximately flat code which would be a
+little more than eight bits for 286 symbols and a little less than five bits
+for 30 symbols.
+
+
+2.2 More details on the inflate table lookup
+
+Ok, you want to know what this cleverly obfuscated inflate tree actually
+looks like. You are correct that it's not a Huffman tree. It is simply a
+lookup table for the first, let's say, nine bits of a Huffman symbol. The
+symbol could be as short as one bit or as long as 15 bits. If a particular
+symbol is shorter than nine bits, then that symbol's translation is duplicated
+in all those entries that start with that symbol's bits. For example, if the
+symbol is four bits, then it's duplicated 32 times in a nine-bit table. If a
+symbol is nine bits long, it appears in the table once.
+
+If the symbol is longer than nine bits, then that entry in the table points
+to another similar table for the remaining bits. Again, there are duplicated
+entries as needed. The idea is that most of the time the symbol will be short
+and there will only be one table look up. (That's whole idea behind data
+compression in the first place.) For the less frequent long symbols, there
+will be two lookups. If you had a compression method with really long
+symbols, you could have as many levels of lookups as is efficient. For
+inflate, two is enough.
+
+So a table entry either points to another table (in which case nine bits in
+the above example are gobbled), or it contains the translation for the symbol
+and the number of bits to gobble. Then you start again with the next
+ungobbled bit.
+
+You may wonder: why not just have one lookup table for how ever many bits the
+longest symbol is? The reason is that if you do that, you end up spending
+more time filling in duplicate symbol entries than you do actually decoding.
+At least for deflate's output that generates new trees every several 10's of
+kbytes. You can imagine that filling in a 2^15 entry table for a 15-bit code
+would take too long if you're only decoding several thousand symbols. At the
+other extreme, you could make a new table for every bit in the code. In fact,
+that's essentially a Huffman tree. But then you spend two much time
+traversing the tree while decoding, even for short symbols.
+
+So the number of bits for the first lookup table is a trade of the time to
+fill out the table vs. the time spent looking at the second level and above of
+the table.
+
+Here is an example, scaled down:
+
+The code being decoded, with 10 symbols, from 1 to 6 bits long:
+
+A: 0
+B: 10
+C: 1100
+D: 11010
+E: 11011
+F: 11100
+G: 11101
+H: 11110
+I: 111110
+J: 111111
+
+Let's make the first table three bits long (eight entries):
+
+000: A,1
+001: A,1
+010: A,1
+011: A,1
+100: B,2
+101: B,2
+110: -> table X (gobble 3 bits)
+111: -> table Y (gobble 3 bits)
+
+Each entry is what the bits decode as and how many bits that is, i.e. how
+many bits to gobble. Or the entry points to another table, with the number of
+bits to gobble implicit in the size of the table.
+
+Table X is two bits long since the longest code starting with 110 is five bits
+long:
+
+00: C,1
+01: C,1
+10: D,2
+11: E,2
+
+Table Y is three bits long since the longest code starting with 111 is six
+bits long:
+
+000: F,2
+001: F,2
+010: G,2
+011: G,2
+100: H,2
+101: H,2
+110: I,3
+111: J,3
+
+So what we have here are three tables with a total of 20 entries that had to
+be constructed. That's compared to 64 entries for a single table. Or
+compared to 16 entries for a Huffman tree (six two entry tables and one four
+entry table). Assuming that the code ideally represents the probability of
+the symbols, it takes on the average 1.25 lookups per symbol. That's compared
+to one lookup for the single table, or 1.66 lookups per symbol for the
+Huffman tree.
+
+There, I think that gives you a picture of what's going on. For inflate, the
+meaning of a particular symbol is often more than just a letter. It can be a
+byte (a "literal"), or it can be either a length or a distance which
+indicates a base value and a number of bits to fetch after the code that is
+added to the base value. Or it might be the special end-of-block code. The
+data structures created in inftrees.c try to encode all that information
+compactly in the tables.
+
+
+Jean-loup Gailly Mark Adler
+jloup@gzip.org madler@alumni.caltech.edu
+
+
+References:
+
+[LZ77] Ziv J., Lempel A., ``A Universal Algorithm for Sequential Data
+Compression,'' IEEE Transactions on Information Theory, Vol. 23, No. 3,
+pp. 337-343.
+
+``DEFLATE Compressed Data Format Specification'' available in
+http://www.ietf.org/rfc/rfc1951.txt
View
66 common/dist/zlib/amiga/Makefile.pup
@@ -0,0 +1,66 @@
+# Amiga powerUP (TM) Makefile
+# makefile for libpng and SAS C V6.58/7.00 PPC compiler
+# Copyright (C) 1998 by Andreas R. Kleinert
+
+LIBNAME = libzip.a
+
+CC = scppc
+CFLAGS = NOSTKCHK NOSINT OPTIMIZE OPTGO OPTPEEP OPTINLOCAL OPTINL \
+ OPTLOOP OPTRDEP=8 OPTDEP=8 OPTCOMP=8 NOVER
+AR = ppc-amigaos-ar cr
+RANLIB = ppc-amigaos-ranlib
+LD = ppc-amigaos-ld -r
+LDFLAGS = -o
+LDLIBS = LIB:scppc.a LIB:end.o
+RM = delete quiet
+
+OBJS = adler32.o compress.o crc32.o gzio.o uncompr.o deflate.o trees.o \
+ zutil.o inflate.o infback.o inftrees.o inffast.o
+
+TEST_OBJS = example.o minigzip.o
+
+all: example minigzip
+
+check: test
+test: all
+ example
+ echo hello world | minigzip | minigzip -d
+
+$(LIBNAME): $(OBJS)
+ $(AR) $@ $(OBJS)
+ -$(RANLIB) $@
+
+example: example.o $(LIBNAME)
+ $(LD) $(LDFLAGS) $@ LIB:c_ppc.o $@.o $(LIBNAME) $(LDLIBS)
+
+minigzip: minigzip.o $(LIBNAME)
+ $(LD) $(LDFLAGS) $@ LIB:c_ppc.o $@.o $(LIBNAME) $(LDLIBS)
+
+mostlyclean: clean
+clean:
+ $(RM) *.o example minigzip $(LIBNAME) foo.gz
+
+zip:
+ zip -ul9 zlib README ChangeLog Makefile Make????.??? Makefile.?? \
+ descrip.mms *.[ch]
+
+tgz:
+ cd ..; tar cfz zlib/zlib.tgz zlib/README zlib/ChangeLog zlib/Makefile \
+ zlib/Make????.??? zlib/Makefile.?? zlib/descrip.mms zlib/*.[ch]
+
+# DO NOT DELETE THIS LINE -- make depend depends on it.
+
+adler32.o: zlib.h zconf.h
+compress.o: zlib.h zconf.h
+crc32.o: crc32.h zlib.h zconf.h
+deflate.o: deflate.h zutil.h zlib.h zconf.h
+example.o: zlib.h zconf.h
+gzio.o: zutil.h zlib.h zconf.h
+inffast.o: zutil.h zlib.h zconf.h inftrees.h inflate.h inffast.h
+inflate.o: zutil.h zlib.h zconf.h inftrees.h inflate.h inffast.h
+infback.o: zutil.h zlib.h zconf.h inftrees.h inflate.h inffast.h
+inftrees.o: zutil.h zlib.h zconf.h inftrees.h
+minigzip.o: zlib.h zconf.h
+trees.o: deflate.h zutil.h zlib.h zconf.h trees.h
+uncompr.o: zlib.h zconf.h
+zutil.o: zutil.h zlib.h zconf.h
View
65 common/dist/zlib/amiga/Makefile.sas
@@ -0,0 +1,65 @@
+# SMakefile for zlib
+# Modified from the standard UNIX Makefile Copyright Jean-loup Gailly
+# Osma Ahvenlampi <Osma.Ahvenlampi@hut.fi>
+# Amiga, SAS/C 6.56 & Smake
+
+CC=sc
+CFLAGS=OPT
+#CFLAGS=OPT CPU=68030
+#CFLAGS=DEBUG=LINE
+LDFLAGS=LIB z.lib
+
+SCOPTIONS=OPTSCHED OPTINLINE OPTALIAS OPTTIME OPTINLOCAL STRMERGE \
+ NOICONS PARMS=BOTH NOSTACKCHECK UTILLIB NOVERSION ERRORREXX \
+ DEF=POSTINC
+
+OBJS = adler32.o compress.o crc32.o gzio.o uncompr.o deflate.o trees.o \
+ zutil.o inflate.o infback.o inftrees.o inffast.o
+
+TEST_OBJS = example.o minigzip.o
+
+all: SCOPTIONS example minigzip
+
+check: test
+test: all
+ example
+ echo hello world | minigzip | minigzip -d
+
+install: z.lib
+ copy clone zlib.h zconf.h INCLUDE:
+ copy clone z.lib LIB:
+
+z.lib: $(OBJS)
+ oml z.lib r $(OBJS)
+
+example: example.o z.lib
+ $(CC) $(CFLAGS) LINK TO $@ example.o $(LDFLAGS)
+
+minigzip: minigzip.o z.lib
+ $(CC) $(CFLAGS) LINK TO $@ minigzip.o $(LDFLAGS)
+
+mostlyclean: clean
+clean:
+ -delete force quiet example minigzip *.o z.lib foo.gz *.lnk SCOPTIONS
+
+SCOPTIONS: Makefile.sas
+ copy to $@ <from <
+$(SCOPTIONS)
+<
+
+# DO NOT DELETE THIS LINE -- make depend depends on it.
+
+adler32.o: zlib.h zconf.h
+compress.o: zlib.h zconf.h
+crc32.o: crc32.h zlib.h zconf.h
+deflate.o: deflate.h zutil.h zlib.h zconf.h
+example.o: zlib.h zconf.h
+gzio.o: zutil.h zlib.h zconf.h
+inffast.o: zutil.h zlib.h zconf.h inftrees.h inflate.h inffast.h
+inflate.o: zutil.h zlib.h zconf.h inftrees.h inflate.h inffast.h
+infback.o: zutil.h zlib.h zconf.h inftrees.h inflate.h inffast.h
+inftrees.o: zutil.h zlib.h zconf.h inftrees.h
+minigzip.o: zlib.h zconf.h
+trees.o: deflate.h zutil.h zlib.h zconf.h trees.h
+uncompr.o: zlib.h zconf.h
+zutil.o: zutil.h zlib.h zconf.h
View
132 common/dist/zlib/as400/bndsrc
@@ -0,0 +1,132 @@
+STRPGMEXP PGMLVL(*CURRENT) SIGNATURE('ZLIB')
+
+/*@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@*/
+/* Version 1.1.3 entry points. */
+/*@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@*/
+
+/********************************************************************/
+/* *MODULE ADLER32 ZLIB 01/02/01 00:15:09 */
+/********************************************************************/
+
+ EXPORT SYMBOL("adler32")
+
+/********************************************************************/
+/* *MODULE COMPRESS ZLIB 01/02/01 00:15:09 */
+/********************************************************************/
+
+ EXPORT SYMBOL("compress")
+ EXPORT SYMBOL("compress2")
+
+/********************************************************************/
+/* *MODULE CRC32 ZLIB 01/02/01 00:15:09 */
+/********************************************************************/
+
+ EXPORT SYMBOL("crc32")
+ EXPORT SYMBOL("get_crc_table")
+
+/********************************************************************/
+/* *MODULE DEFLATE ZLIB 01/02/01 00:15:09 */
+/********************************************************************/
+
+ EXPORT SYMBOL("deflate")
+ EXPORT SYMBOL("deflateEnd")
+ EXPORT SYMBOL("deflateSetDictionary")
+ EXPORT SYMBOL("deflateCopy")
+ EXPORT SYMBOL("deflateReset")
+ EXPORT SYMBOL("deflateParams")
+ EXPORT SYMBOL("deflatePrime")
+ EXPORT SYMBOL("deflateInit_")
+ EXPORT SYMBOL("deflateInit2_")
+
+/********************************************************************/
+/* *MODULE GZIO ZLIB 01/02/01 00:15:09 */
+/********************************************************************/
+
+ EXPORT SYMBOL("gzopen")
+ EXPORT SYMBOL("gzdopen")
+ EXPORT SYMBOL("gzsetparams")
+ EXPORT SYMBOL("gzread")
+ EXPORT SYMBOL("gzwrite")
+ EXPORT SYMBOL("gzprintf")
+ EXPORT SYMBOL("gzputs")
+ EXPORT SYMBOL("gzgets")
+ EXPORT SYMBOL("gzputc")
+ EXPORT SYMBOL("gzgetc")
+ EXPORT SYMBOL("gzflush")
+ EXPORT SYMBOL("gzseek")
+ EXPORT SYMBOL("gzrewind")
+ EXPORT SYMBOL("gztell")
+ EXPORT SYMBOL("gzeof")
+ EXPORT SYMBOL("gzclose")
+ EXPORT SYMBOL("gzerror")
+
+/********************************************************************/
+/* *MODULE INFLATE ZLIB 01/02/01 00:15:09 */
+/********************************************************************/
+
+ EXPORT SYMBOL("inflate")
+ EXPORT SYMBOL("inflateEnd")
+ EXPORT SYMBOL("inflateSetDictionary")
+ EXPORT SYMBOL("inflateSync")
+ EXPORT SYMBOL("inflateReset")
+ EXPORT SYMBOL("inflateInit_")
+ EXPORT SYMBOL("inflateInit2_")
+ EXPORT SYMBOL("inflateSyncPoint")
+
+/********************************************************************/
+/* *MODULE UNCOMPR ZLIB 01/02/01 00:15:09 */
+/********************************************************************/
+
+ EXPORT SYMBOL("uncompress")
+
+/********************************************************************/
+/* *MODULE ZUTIL ZLIB 01/02/01 00:15:09 */
+/********************************************************************/
+
+ EXPORT SYMBOL("zlibVersion")
+ EXPORT SYMBOL("zError")
+
+/*@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@*/
+/* Version 1.2.1 additional entry points. */
+/*@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@*/
+
+/********************************************************************/
+/* *MODULE COMPRESS ZLIB 01/02/01 00:15:09 */
+/********************************************************************/
+
+ EXPORT SYMBOL("compressBound")
+
+/********************************************************************/
+/* *MODULE DEFLATE ZLIB 01/02/01 00:15:09 */
+/********************************************************************/
+
+ EXPORT SYMBOL("deflateBound")
+
+/********************************************************************/
+/* *MODULE GZIO ZLIB 01/02/01 00:15:09 */
+/********************************************************************/
+
+ EXPORT SYMBOL("gzungetc")
+ EXPORT SYMBOL("gzclearerr")
+
+/********************************************************************/
+/* *MODULE INFBACK ZLIB 01/02/01 00:15:09 */
+/********************************************************************/
+
+ EXPORT SYMBOL("inflateBack")
+ EXPORT SYMBOL("inflateBackEnd")
+ EXPORT SYMBOL("inflateBackInit_")
+
+/********************************************************************/
+/* *MODULE INFLATE ZLIB 01/02/01 00:15:09 */
+/********************************************************************/
+
+ EXPORT SYMBOL("inflateCopy")
+
+/********************************************************************/
+/* *MODULE ZUTIL ZLIB 01/02/01 00:15:09 */
+/********************************************************************/
+
+ EXPORT SYMBOL("zlibCompileFlags")
+
+ENDPGMEXP
View
123 common/dist/zlib/as400/compile.clp
@@ -0,0 +1,123 @@
+/******************************************************************************/
+/* */
+/* ZLIB */
+/* */
+/* Compile sources into modules and link them into a service program. */
+/* */
+/******************************************************************************/
+
+ PGM
+
+/* Configuration adjustable parameters. */
+
+ DCL VAR(&SRCLIB) TYPE(*CHAR) LEN(10) +
+ VALUE('ZLIB') /* Source library. */
+ DCL VAR(&SRCFILE) TYPE(*CHAR) LEN(10) +
+ VALUE('SOURCES') /* Source member file. */
+ DCL VAR(&CTLFILE) TYPE(*CHAR) LEN(10) +
+ VALUE('TOOLS') /* Control member file. */
+
+ DCL VAR(&MODLIB) TYPE(*CHAR) LEN(10) +
+ VALUE('ZLIB') /* Module library. */
+
+ DCL VAR(&SRVLIB) TYPE(*CHAR) LEN(10) +
+ VALUE('LGPL') /* Service program library. */
+
+ DCL VAR(&CFLAGS) TYPE(*CHAR) +
+ VALUE('OPTIMIZE(40)') /* Compile options. */
+
+
+/* Working storage. */
+
+ DCL VAR(&CMDLEN) TYPE(*DEC) LEN(15 5) VALUE(300) /* Command length. */
+ DCL VAR(&CMD) TYPE(*CHAR) LEN(512)
+
+
+/* Compile sources into modules. */
+
+ CHGVAR VAR(&CMD) VALUE('CRTCMOD MODULE(' *TCAT &MODLIB *TCAT +
+ '/ADLER32) SRCFILE(' *TCAT +
+ &SRCLIB *TCAT '/' *TCAT &SRCFILE *TCAT +
+ ') SYSIFCOPT(*IFSIO)' *BCAT &CFLAGS)
+ CALL PGM(QCMDEXC) PARM(&CMD &CMDLEN)
+
+ CHGVAR VAR(&CMD) VALUE('CRTCMOD MODULE(' *TCAT &MODLIB *TCAT +
+ '/COMPRESS) SRCFILE(' *TCAT +
+ &SRCLIB *TCAT '/' *TCAT &SRCFILE *TCAT +
+ ') SYSIFCOPT(*IFSIO)' *BCAT &CFLAGS)
+ CALL PGM(QCMDEXC) PARM(&CMD &CMDLEN)
+
+ CHGVAR VAR(&CMD) VALUE('CRTCMOD MODULE(' *TCAT &MODLIB *TCAT +
+ '/CRC32) SRCFILE(' *TCAT +
+ &SRCLIB *TCAT '/' *TCAT &SRCFILE *TCAT +
+ ') SYSIFCOPT(*IFSIO)' *BCAT &CFLAGS)
+ CALL PGM(QCMDEXC) PARM(&CMD &CMDLEN)
+
+ CHGVAR VAR(&CMD) VALUE('CRTCMOD MODULE(' *TCAT &MODLIB *TCAT +
+ '/DEFLATE) SRCFILE(' *TCAT +
+ &SRCLIB *TCAT '/' *TCAT &SRCFILE *TCAT +
+ ') SYSIFCOPT(*IFSIO)' *BCAT &CFLAGS)
+ CALL PGM(QCMDEXC) PARM(&CMD &CMDLEN)
+
+ CHGVAR VAR(&CMD) VALUE('CRTCMOD MODULE(' *TCAT &MODLIB *TCAT +
+ '/GZIO) SRCFILE(' *TCAT +
+ &SRCLIB *TCAT '/' *TCAT &SRCFILE *TCAT +
+ ') SYSIFCOPT(*IFSIO)' *BCAT &CFLAGS)
+ CALL PGM(QCMDEXC) PARM(&CMD &CMDLEN)
+
+ CHGVAR VAR(&CMD) VALUE('CRTCMOD MODULE(' *TCAT &MODLIB *TCAT +
+ '/INFBACK) SRCFILE(' *TCAT +
+ &SRCLIB *TCAT '/' *TCAT &SRCFILE *TCAT +
+ ') SYSIFCOPT(*IFSIO)' *BCAT &CFLAGS)
+ CALL PGM(QCMDEXC) PARM(&CMD &CMDLEN)
+
+ CHGVAR VAR(&CMD) VALUE('CRTCMOD MODULE(' *TCAT &MODLIB *TCAT +
+ '/INFFAST) SRCFILE(' *TCAT +
+ &SRCLIB *TCAT '/' *TCAT &SRCFILE *TCAT +
+ ') SYSIFCOPT(*IFSIO)' *BCAT &CFLAGS)
+ CALL PGM(QCMDEXC) PARM(&CMD &CMDLEN)
+
+ CHGVAR VAR(&CMD) VALUE('CRTCMOD MODULE(' *TCAT &MODLIB *TCAT +
+ '/INFLATE) SRCFILE(' *TCAT +
+ &SRCLIB *TCAT '/' *TCAT &SRCFILE *TCAT +
+ ') SYSIFCOPT(*IFSIO)' *BCAT &CFLAGS)
+ CALL PGM(QCMDEXC) PARM(&CMD &CMDLEN)
+
+ CHGVAR VAR(&CMD) VALUE('CRTCMOD MODULE(' *TCAT &MODLIB *TCAT +
+ '/INFTREES) SRCFILE(' *TCAT +
+ &SRCLIB *TCAT '/' *TCAT &SRCFILE *TCAT +
+ ') SYSIFCOPT(*IFSIO)' *BCAT &CFLAGS)
+ CALL PGM(QCMDEXC) PARM(&CMD &CMDLEN)
+
+ CHGVAR VAR(&CMD) VALUE('CRTCMOD MODULE(' *TCAT &MODLIB *TCAT +
+ '/TREES) SRCFILE(' *TCAT +
+ &SRCLIB *TCAT '/' *TCAT &SRCFILE *TCAT +
+ ') SYSIFCOPT(*IFSIO)' *BCAT &CFLAGS)
+ CALL PGM(QCMDEXC) PARM(&CMD &CMDLEN)
+
+ CHGVAR VAR(&CMD) VALUE('CRTCMOD MODULE(' *TCAT &MODLIB *TCAT +
+ '/UNCOMPR) SRCFILE(' *TCAT +
+ &SRCLIB *TCAT '/' *TCAT &SRCFILE *TCAT +
+ ') SYSIFCOPT(*IFSIO)' *BCAT &CFLAGS)
+ CALL PGM(QCMDEXC) PARM(&CMD &CMDLEN)
+
+ CHGVAR VAR(&CMD) VALUE('CRTCMOD MODULE(' *TCAT &MODLIB *TCAT +
+ '/ZUTIL) SRCFILE(' *TCAT +
+ &SRCLIB *TCAT '/' *TCAT &SRCFILE *TCAT +
+ ') SYSIFCOPT(*IFSIO)' *BCAT &CFLAGS)
+ CALL PGM(QCMDEXC) PARM(&CMD &CMDLEN)
+
+
+/* Link modules into a service program. */
+
+ CRTSRVPGM SRVPGM(&SRVLIB/ZLIB) +