From:	mlsmith AT ktis DOT net (Michael L. Smith)
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: Writing a struct to disk
Date:	Sun, 07 Sep 1997 05:16:33 GMT
Organization:	Computer Design Lab
Lines:	35
Message-ID:	<5utdbh$o0_002@mlsmith.ktis.net>
References:	<1 DOT 5 DOT 4 DOT 32 DOT 19970825173441 DOT 006ab780 AT dce03 DOT ipt DOT br> <3401CC3F DOT 3C1A AT cs DOT com> <5ttta0$g3n AT freenet-news DOT carleton DOT ca>
NNTP-Posting-Host:	news.newsdawg.com
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

In article <5ttta0$g3n AT freenet-news DOT carleton DOT ca>, ao950 AT FreeNet DOT Carleton DOT CA (Paul Derbyshire) wrote:
>
>"John M. Aldrich" (fighteer AT cs DOT com) writes:
>> Cesar Scarpini Rabak wrote:
>>> 
>>> Text format is not _that_ highly portable! When one switches from
>>> environment the way the end of line is marked varies, and filters or
>>> converting programms may be needed...
>> 
>> True.  However, a great many programs that I have seen are capable of
>> recognizing EOLs, whatever their format.  For example, DOS Edit can load
>> and parse Unix-formatted text files.  I guess they're just designed with
>> that in mind.
>
>Yeah and WIndows Notepad can't, even the souped up version with WIndows
>95. :P
>
>> C may not require one, but characters 32-127 of the ASCII character set
>> are pretty well fixed on most systems.  I suppose that machines using
>> that IBM format, EDB-whatsit, could cause confusion, but anybody who
>> uses such systems should be aware of the discrepancy.
>
>EBSDIC? Eb's Dick??? Anyone whose computer uses that instead of ASCII,
>should get a newer computer. :)
>
>


I'm surprised that nowere in this thread is the endian problem mentioned. I f 
portability of binary files is a requirement, the ordering of bytes in data 
types larger than 1 char is an issue. I recently converted a program form a 
Motorola platform to Intel in which two very large files were encoded with a 
mixture if data types. The encoding program is long gone. I had to modify the 
program to change the endian on the fly (a real pain). It is much easier to 
run (or write and run) a program to filter the newline characters.

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