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1990-02-15
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3KB
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131 lines
Rainer Gerhards Baesweiler, April 18, 1988
Petronellastr. 6
D-5112 Baesweiler
West Germany
The C User's Group
Mr. Robert Ward
Box 97
McPherson, KS 67460
U S A
Dear Mr. Ward,
Data Exchange Format
I've just received the last C User's Journal. As I could
see in the letters coloumn, you have some first candidates for
the exchange format library programs.
This brings me to send you this packet: It contains the
first draft of my version of such an utility. It is mostly
written according to my draft format description I've send you
some time ago. As such it includes some features that make the
format more portable than a plain cpio or tar implementation.
This features include e. g. the ability to do tab expansion and
filename conversion. Note that most of the extensions are
optional and disabled unless actived by a command line switch.
Although it doesn't implement a plain cpio format, the
utility is able to read 4and5 4write5 cpio disks. So you are able to
use it with Unix disks you've gotten from anyone.
The program is not a very, very simple one but it uses only
standard C and should compile under most compiler/operating
system pairs. It has been developed under Unix (pcc) and passed
a short test under the following environments: MS-DOS (MSC5.0),
MS-DOS (Turbo-C1.5), MS-DOS(Lattice-C3.00),
MS-DOS(Datalight-C2.23to3.11), Starsys (native-compiler).
Note that the program is not really complete today. I only
send this version so that you can take it into consideration
when prooving exchange format utilities. There is also GEnoHF new
documentation included on the disk. Please look at the source
module for further details.
The loader utilities haven't been upgraded since my last
letter. This will be done in the near future. They will receive
a different user interface (but still command line).
The enclosed disk contains my whole development directory
(except binaries) at its current state. The program I was
talking about is cugcpio.c. It needs the header file environ.h
to set the correct execution environment conviguration. No other
files are required.
At last a request: please give me a little feedback about
my contribution and how do you think it will fit in the exchange
format. This keeps me on the right way and perhaps helps me
saving time if you think it's better to cancel my development.
Sincerely yours,