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Newsgroups: comp.lang.ada
Subject: plain Ada streams with Windows(TM)
From: Georg Bauhaus <bauhaus@futureapps.de>
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Date: Tue, 02 May 2006 03:24:07 +0200
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Date: 2006-05-02T03:23:32+02:00
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Hello, for a Windows console application using
only plain Ada, is there a way to open standard
input/output using Stream_IO.Open, but not using
Text_Streams? [*]

I have been trying

  open(f, In_File, "CONIN$");

However, this seems to tie input to the console
buffer, i.e., redirected or piped input to my program
doesn't come in. (Besides, the SDK docs say I have to
open shared. A Form string is not supported by
one of the Ada implementations I have, AFAICS.)

The UNIX equivalent (or so I thought)

  open(f, In_File, "/dev/stdin");

works well (with a GNU/Linux system).

Is there a way out, or will I have to write my own
stream? (for a small free software tool, actually.)


[*] Different implementations of Text_IO.Text_Streams,
and in particular Wide_Text_IO.Text_Streams, seem to have
some problems.  Being twice as slow as Stream_IO (GNAT)
is a minor one.
GNAT writes characters not requested when creating a new
stream/file. I find this puzzling (Is this correct?).
Wide_Text_IO.Text_Streams is not working, really, in
OA and hence not an option, obviously.

-- Georg