history.420

汇编大全 中国矿业大学计算机学院 汇编实验5

UnZip version 4.2, 20 March 1992

New features, you betcha:

 - directories now created by default (was only with "-d" option); new "-j"
    option to junk directory names [CN]
 - "-n" option for never overwriting existing files (opposite of -o) [CN]
 - "-u" option (update: at last!) from Kai Uwe Rommel, just like zip's
    update option, but in reverse
 - "-f" option (freshen) to complement -u; VMS support for both [CN]
 - option to rename extracted file if already exists (another much-wanted
    improvement!) [Kai]
 - option to set "-n" (never overwrite) in middle of processing zipfile [CN]
 - (uncompressed) symbolic links extracted under Unix [Mark Adler]
 - international date formats for DOS, OS/2 [Jon Saxton]
 - trailing ^Z now removed with -a option under Unix/VMS/etc. [CN]
 - decryption (uses existing crypt.c from zip 1.0) [big thanks to Mark and
    Jean-loup!]
 - OS/2:  longnames now saved into EA DATA. SF on FAT disk [Kai Uwe Rommel]
 - OS/2 2.0:  IBM C Set/2 and GNU C/emx 32-bit compilers supported [Kai]
 - OS/2, MS-DOS:  "-b" option (blanks) to allow writing of filenames with
    blanks (like EA DATA. SF, above) on FAT disks [CN]
 - Mac:  Aztec C port; new makefiles for Aztec C and MPW C [Antoine Verheijen]
 - Amiga:  several compilers supported (possibly--not tested) [Paul Wells,
    Georg Sassen]
 - Atari:  patches to UnZip 4.1 + support files [Martin Schulz]
 - VMS:  new makefile command files for GNU C [Mike Freeman]
 - VMS:  major improvements to handling of VMS file attributes [Igor
    Mandrichenko]
 - major restructuring of extraction code, prompted by rename and VMS patches
    [CN, Igor Mandrichenko]
 - usage info goes to stdout if just "unzip" specified; otherwise to stderr
    as before (allows redirection under MS-DOS) [CN]
 - testing info with quiet flag (unzip -tq) identifies zipfile being tested and
    reports number of files skipped--for background or batch processing [CN]
 - several new systems supported, including Minix (type "make list") [various]
 - new ZipInfo [CN] and Ship [Mark] utility programs
 - new (but incomplete) COPYING and CONTRIBS files to give credit where
    credit due (let us know if you're not in there and should be).
 - assorted other new files (like BUGS, so you know what's still screwed up :-)

Bugs fixed:

 - HP, others:  FILENAME_MAX=14, not 256 or whatever:  paths truncated [CN,
    with much prodding from Jean-loup Gailly :-) ]
 - VMS:  filenames longer than 31 characters get truncated? [seems to have
    gotten fixed by itself, or else side effect from FILENAME_MAX]
 - check expected offset vs. actual and compensate (bogus MacBinary headers,
    etc.); indicate file transfer errors [CN, Jean-loup]
 - ifdef sco, skip <param.h> (redefinitions) [CN]
 - ifdef typedef byte:  some systems (just Bull?) have predefined [CN]
 - Unix:  blanks no longer converted to underlines [CN, Mark]
 - DOS (& OS/2?):  fatal write error if file to be unzipped is read-only [Kai?]
 - DOS (& OS/2?):  if out of disk space, unzip hangs hard [CN, usually works:
    see comments in BUGS, however!]
 - DOS:  decryption with Borland C was broken [David Kirschbaum]
 - DOS & OS/2:  dos2unix() was not used; commented out [David]
 - decryption key was doubly defined [David]
 - file creation (actually deletion) error if file exists but not owned by us;
    try unlinking, report error [Cliff Stanford]
 - VMS:  MMS file needs an odd space [Joel Aycock]
 - PK signature strings encoded so unzip executable doesn't look like a zipfile
    [CN]
 - Makefile and code simplified to remove non-NOTINT16 stuff (fewer false bug
    reports that way) [CN]
 - changed all ?? and ??? comments to avoid possible ANSI trigraph warnings
    (except one string in zipinfo.c) [CN]
 - Turbo C++ 1.0:  fixed problem with missing _MAX_PATH [CN]

==================

These changes occurred in various versions, from 4.10a to 4.10x and 4.20a to
4.20x.  UnZip 4.11 was an incomplete (and somewhat incorrect) beta version.
Anyway, I have no idea what versions correspond to what features (except that
decryption appeared in 4.20n); it's not particularly relevant, since they
were all internal versions anyway.

More important is the fact that this list undoubtedly leaves out many bug-
fixes and even some features which have been added; apologies to anyone who
may inadvertently been slighted.  Let us know, eh?  It's been too long...

Greg Roelofs (a.k.a. Cave Newt)

==================

And now, over to our fearless coordinator, David "Death on Skis" Kirschbaum:

Helloooo, David...Earth to David...yoooo hooooo....   Hmmm...must be out for
the moment.  We'll check back in with him for the next release!