From: Stephen Leake <stephen.a.leake.1@gsfc.nasa.gov>
Subject: Re: redirecting the standard output
Date: 10 Apr 2001 12:08:25 -0400
Date: 2001-04-10T16:23:32+00:00 [thread overview]
Message-ID: <upuekpwjq.fsf@gsfc.nasa.gov> (raw)
In-Reply-To: 3ad31759$1@pull.gecm.com
"Martin Dowie" <martin.dowie@gecm.com> writes:
> This time with a subject... :-)
>
> Target System: PowerPC, AdaMULTI v1.8.9b, VxWorks 5.4
>
> How do I redirect the standard output? I'd like to redirect it to device
> "/null"
Normally this is done from the command line, when you launch your
executable. What OS are you on?
> Attempts: Open (DevNull, Append_File, "/null"); Open (DevNull,
> "/null", "/null");
>
> just cause Status_Error, i.e. the device is already "open". So how can
> I then "Set_Output (DevNull);" without having the device object in
> File_Type form?..
You can use Ada.Text_IO.Set_Output to set the _current_ output to some
file. But it has to be an open file, and you haven't gotten there yet.
Backing up a bit, why do you want to do this? I can guess that you
want to turn off some debugging output. It is _far_ better to define a
Debug_IO package, with a Boolean or Integer debug enabled variable.
Then have a style guide that says "Ada.Text_IO is _forbidden_ in
delivered code; use Debug_IO if you need debug output".
--
-- Stephe
next prev parent reply other threads:[~2001-04-10 16:08 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-04-10 14:32 redirecting the standard output Martin Dowie
2001-04-10 15:01 ` redirecting the standard output to different std outputs? Frank
2001-04-10 16:17 ` Mark Biggar
2001-04-10 20:38 ` James Rogers
2001-04-13 16:23 ` Tucker Taft
2001-04-10 16:08 ` Stephen Leake [this message]
2001-04-10 16:46 ` redirecting the standard output Stephen Leake
2001-04-10 17:13 ` Smark
2001-04-10 21:00 ` Ted Dennison
2001-04-11 7:32 ` Martin Dowie
2001-04-11 12:04 ` Stephen Leake
2001-04-11 14:15 ` Martin Dowie
2001-04-12 1:41 ` tmoran
2001-04-12 7:08 ` Martin Dowie
2001-04-10 16:46 ` Smark
2001-04-11 12:06 ` Stephen Leake
2001-04-11 14:11 ` Martin Dowie
2001-04-11 0:04 ` Jeff Creem
2001-04-11 9:48 ` Graham Baxter
2001-04-12 12:23 ` Martin Dowie
2001-04-12 14:01 ` Smark
2001-04-12 19:52 ` martin.m.dowie
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