Re: Binary versus text and compiler versions, was: Re: Will Ada-95 Programs Written in MS Windows Run in MacOS and Linux Without Some Tweaking.

[Simon Clubley <clubley@remove_me.eisner.decus.org-Earth.UFP>]

On 2013-12-11, Simon Wright <simon@pushface.org> wrote:
> "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de> writes:
>
>> You assume tar available on the other end and that tar would recode
>> stuff.  As an example consider RSX-11M as a target. Your tar (if you
>> find one there) would have to translate file paths into something like
>> DK:[1,54]FOO.TXT (limited to RADIX-50 code set) and file bodies into
>> FILES-11 records.
>
> I'm glad I've never had to do that.
>

On VMS, the C RTL Unix to VMS translation layer would probably map a VMS
filename of the form DKA0:[SIMON]FOO.TXT to something like
/dka0/simon/foo.txt (although that would need double checking because on
VMS, I generally use VMS style filenames).

So, if we take the C RTL level mapping in VMS as a template, it would
probably be mapped within the language RTL on RSX-11M as something like
/DK/1,54/FOO.TXT or /DK/001054/FOO.TXT if that support was added.

As for the RMS side of things, I don't know what RMS attributes are available
on RSX-11M, but on VMS I would probably mark the file as something like
stream (not stream-lf) or as fixed size blocks with no carriage control.

IIRC, the tar versions I've seen on VMS treat any filename specification
without a leading slash as a path which is relative to the current directory
which bypasses much of the above problem.

Simon.

-- 
Simon Clubley, clubley@remove_me.eisner.decus.org-Earth.UFP
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