history.550

压缩解压,是unzip540的升级,这个外国网站摘来的源码,是evb编写.

UnZip, version 5.5, 17 February 2002

Features added (or removed):

5.5a (04 Feb 01):
 - unzip.1: added documentation for the new Acorn NFS filetype features [SPC]
 - generic (inflate.c, globals.h, fileio.c, unzpriv.h): integrated support of
    Deflate64 for all ports with exception of MSDOS and OS/2 16-bit [SPC]

5.5b (11 Feb 01):
 - added Deflate64 support to fUnZip [SPC]
 - added Deflate64 support for 16-bit environments [SPC]

5.5c (18 Apr 01):
 - SFX: made SFX_EXDIR default, added NO_SFXEXDIR option to allow switching
    off the "-d exdir" support [SPC]
 - OS2, WIN32: added presetting of file size for extracted files, to reduce
    file fragmentation [Pavel Lastovicka, Kai Uwe Rommel, SPC]
 - VMS, new functionality of -b option: when extracting to standard output
    (-c or -p), -b switches to "binary piping mode" by disabling text data
    conversion [SPC]

5.5d (28 Apr 01):
 - SFX: added simple "execute command after extraction" feature that uses a
    command specification supplied with the Zip archive comment, controlled
    by the CHEAP_SFX_AUTORUN compile time option [Paul Kienitz]
 - SFX: slightly refined the CHEAP_SFX_AUTORUN code, switched off SFX_EXDIR
    when CHEAP_SFX_AUTORUN is enabled, documented the new autorun feature [SPC]
 - VMS: extended new "binary piping" functionality of -b switch to extraction
    of archive entries with VMS attributes saved [SPC]

5.5f (30 Sep 01):
 - extract.c, TestExtraField(): added crc32 check for PKVMS e.f. type [SPC]
 - added real VMS-e.f. analysis for fool-proof detection of VMS "variable
    length record" text files, enabled VMS_TEXT_CONV as default (but not for
    SFX stub) [SPC]
 - added support for optional ACORN_FTYPE_NFS feature to more OS that allow
    long filenames and commas within filenames (BeOS, Novell, OS/2, Theos,
    Win32) [SPC]

5.5g (05 Nov 01):
 - extract.c, extract_or_test_entrylist(): added code for "stripping off
    absolute path spec" when extracting [SPC]

5.5h (12 Jan 02):
 - unzip.h, unzip.c; mapname() in all ports except CMS/MVS, Tandem, TOPS20:
    added code to strip "../" path components from extracted names and new
    option "-:" to allow deactivating this security feature; changed mapname()
    calling interface to allow reporting warning error levels to caller [SPC]
 - man/unzip.1: documented the new "-:" option [SPC]
 - vms/cmdline.c etc.: added support for "-:" option to VMS DCL interface;
    updated VMS help files with description of "-:" option [SPC]
 - windll/windll.{c|txt}: modified handling of DCL struct's "ndflag" member
    to allow setting the "-:" option through the windll interface [SPC]
 - unzpriv.h, zipinfo.c: rudimentary support for recognizing PKWARE's new
    "64-bit size specs" extra field [SPC]

5.5 (17 Feb 02):
 - unix/Makefile: added separate makefile symbol INSTALL_PROGRAM for command
    to install "binary" (compiled and linked) program files [Santiago Vila]


Bugs fixed:

5.5a (04 Feb 01):
 - all OS with Unix-compatible file attributes (Acorn, AosVS, BeOS, QDOS, Unix,
    and others), mapattr(): corrected wrong masking expression in check for
    missing directory attribute; added this check for ports where it was
    still missing [Eric Siegerman, SPC]
 - inflate.c: reorganized inner loop function for slight performance gain [SPC]
 - explode.c: reorganized code (2 instead of 4 inner-loop function versions),
    fixed memory leaks when get_tree() fails (added huft_free() calls) [SPC]

5.5b (11 Feb 01):
 - inflate.c: some more optimizations (also resulting in easier readable code)
    [SPC]
 - unzip.c: revised work area size calculation in the WORK_MALLOC case, when
    the decompression buffer is malloc'ed separately; removed suspicious
    "one unit excess" allocation (8193 instead of 8192, not clear why this
    was introduced in ancient times) [SPC]
 - VMS - cvthelp.tpu, unzip_cli.help: reformatted CLI help file to show negated
    form of negatable options on a separate line in the header of qualifier
    descriptions [Hunter Goatley]
 - generic: renamed version.h into unzvers.h (for better distinction from zip
    sources) and updated all makefiles [SPC]
 - windll: changed windll.rc to get version info directly from unzvers.h and
    killed windll/unzver.h [SPC]
 - api.c, global.h, extract.c, explode.c, inflate.c, unshrink.c: corrected
    declarations of variables and function parameters holding redirected buffer
    size (unsigned vs. ulg issues), added/modified appropiate type casts [SPC]

5.5c (18 Apr 01):
 - most make procedures: unzipsfx compilation requires completely separate
    object files (exception: crc32), because global structure is now different
    from unzip setup (sfx: no Deflate64!) [Thom Schmidt, SPC]
 - inflate.c: moved macro definitions for invalid huft code marker out of
    "no ZLIB only" code part; it is used in huft_build() [Thomas Klausner]
 - AMIGA, HUMAN68K: replaced specific mkGoff.c helper program sources by a more
    generic gbloffs.c source (located in the top level directory); adapted
    makefiles to this change [SPC]
 - win32/win32: modified version() to recognize Borland C++ 5.5.1 [SPC]
 - AMIGA: adapted assembler core routine flate.a to Deflate64 and the 64k
    extraction buffer; adapted inflate setup to allow for 16bit ints in
    an otherwise 32-bit environment [Paul Kienitz]
 - human68k/flate.s: incorporated Paul's updates of amiga/flate.a in the
    HUMAN68K source variant [SPC]
 - MacOS: updates from MacZip release 1.07b [Dirk Haase]
 - unzpriv.h: updated exceptions of "made by FAT -> filename charset is OEM"
    rule to now include the PKZIP 4.0 case [SPC]
 - unzpriv.h, extract.c zipinfo.c: in preparation to multivolume support,
    struct min_info has been extended to hold the entry's disk volume number
    (to conserve space, hostnum & hostver members are shortened to uch) [SPC]
 - extract.c, extract_or_test_files() function: isolated code of "second loop"
    in a separate function, in preparation for multivolume support [SPC]
 - os2/os2.c: use posix-style mkdir definition whenever __GNUC__ is defined,
    for better compatibility with non-EMX gcc ports [Pavel Lastovicka, SPC]
 - windll/windll.c: added missing SETLOCALE() initialization to Wiz_Init()
    [Kevin Cheng]
 - WINDLL port: in windll.c, changed FreeDllMem() scope into static; tried
    to clarify in windll.txt that Wiz_SetOpts() and Wiz_Unzip() must be
    used as a pair of functions [SPC]
 - VMS: removed unused and undocumented /TYPE switch from CLI interface [SPC]

5.5d (28 Apr 01):
 - unix/Makefile: correction for LynxOS target [Mark Clayton]
 - extract.c: synchronized extract_or_test_entrylist() prototype declaration
    for the SET_DIR_ATTRIB case with actually used function interface [SPC]
 - vms/descrip.mms: corrected typo in match_$O rule [Michael Lemke]
 - vms/vms.c: limit buffer size for single block output to less than 64k
    (RMS limit on VAX); corrected record overflow checks to use the right
    RMS limit of (32k-1) [Mike Freeman, SPC]
 - unzver.h: renamed COMPANY_NAME symbol to IZ_COMPANY_NAME, check for
    symbol being already defined; restrict definition of OS/2-DLL specific
    version symbols to OS/2 port [Mike White, SPC]
 - windll/uzexampl.c: corrected inclusion path of unzver.h [Mike White]
 - acorn/GMakefile: need NO_STRNICMP, fixed missing renaming of version.h
    into unzvers.h [Andy Wingate]