Nigel,
It looks to me like you're effectively missing a step, to convert the
bytestream file unzipped from the archive back into a "normal"
MPE file. This is because ZIP & UNZIP are posix programs and
therefore assume all files are using the HFS file system.
I tried the following test and came up with a file that matches
the original. In essence, I zipped an 80 byte fixed ascii file, then
unzipped, ran it through the FROMBYTE program and then
compared the resulting file with the original.
:purge ../GDC/ztest@;noconfirm
1 files matched
1 selected. 1 succeeded. 0 failed.
:listfile [log in to unmask],11
ACCOUNT= AUSSS GROUP= TXT
Name Access FCode RecSiz Type EOF File Limit Disk Usage Exts
-------- ERWS ----- ------ ----- ------------- ------------- --------KB -----
TEST 80 FA 5001 5001 392 7
:copy test.txt,testorig.txt
:zip '../GDC/ztest.zip ../TXT/TEST'
adding: ../TXT/TEST (deflated 97%)
:purge test.txt
:unzip '../GDC/ztest.zip'
Archive: ../GDC/ztest.zip
inflating: ../TXT/TEST
:rename test.txt, testunzp.txt
:listfile [log in to unmask],11
ACCOUNT= AUSSS GROUP= TXT
Name Access FCode RecSiz Type EOF File Limit Disk Usage Exts
-------- ERWS ----- ------ ----- ------------- ------------- --------KB -----
TESTORIG 80 FA 5001 5001 392 1
TESTUNZP 1 BA 405081 2147483647 396 4
:frombyte '../TXT/TESTUNZP ../TXT/TESTCONV'
:listfile [log in to unmask],11
ACCOUNT= AUSSS GROUP= TXT
Name Access FCode RecSiz Type EOF File Limit Disk Usage Exts
-------- ERWS ----- ------ ----- ------------- ------------- --------KB -----
TESTCONV 80 FA 5001 26843545 512 4
TESTORIG 80 FA 5001 5001 392 1
TESTUNZP 1 BA 405081 2147483647 396 4
:compare testorig.txt, testconv.txt
Compare/iX/Copyright Robelle Consulting Ltd. 1991-1994, J.Miner 1978
(Version 2.2)
Licensee: Unisuper Management Ltd
Compare/iX (Version 2.2) Match Criterion = 5 Lines
No differences in these two files
END OF PROGRAM
:
>>> Nigel Skeet <[log in to unmask]> 14/06/2005 21:32:16 >>>
Hi Listers,
Been playing with zip / unzip on the 3K and it looks like it doesn't put
back the files as it found it.
:listf xcpu@,2
ACCOUNT= SYS GROUP= MANAGER
FILENAME CODE ------------LOGICAL RECORD----------- ----SPACE----
SIZE TYP EOF LIMIT R/B SECTORS #X MX
XCPUCHNG 80B FA 318 324 16 112 1 2
:zip.hpbin.sys;info="CPUZIP XCPUCHNG"
adding: JCPUCHNG (deflated 71%)
:purge xcpuchng
:unzip.hpbin.sys;info="CPUZIP"
Archive: CPUZIP.zip
inflating: XCPUCHNG
:listf xcpu@,2
ACCOUNT= SYS GROUP= MANAGER
FILENAME CODE ------------LOGICAL RECORD----------- ----SPACE----
SIZE TYP EOF LIMIT R/B SECTORS #X MX
XCPUCHNG 1B BA 7742 2147483647 1 32 1 *
:
As you can see the size and type has changed although the file is still
readable. Is there a way to use zip / unzip and keep the same file info ?
The versions that I have are :
:zip.hpbin.sys
Copyright (C) 1990-1996 Mark Adler, Richard B. Wales, Jean-loup Gailly
Onno van der Linden and Kai Uwe Rommel. Type 'zip -L' for the software
License.
Zip 2.1 (April 27th 1996). Usage:
:unzip.hpbin.sys
UnZip 5.31 of 31 May 1997, by Info-ZIP. Maintained by Greg Roelofs. Send
bug reports to the authors at [log in to unmask]; see README for
details.
TIA,
Nige...
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