From: "Steve" <nospam_steved94@comcast.net>
Subject: Re: Newbie Question: using Text_IO.Open() to read from standard input
Date: Wed, 12 Oct 2005 20:15:10 -0700
Date: 2005-10-12T20:15:10-07:00 [thread overview]
Message-ID: <BKudnVW0r6FyTdDeRVn-hA@comcast.com> (raw)
In-Reply-To: 1129164557.586640.154480@g14g2000cwa.googlegroups.com
<pamela.lum@gmail.com> wrote in message
news:1129164557.586640.154480@g14g2000cwa.googlegroups.com...
> Hi,
>
> I need to open a file that is passed to my ada executable as standard
> input, in the following fashion:
>
> ./myprogram < inputfile.txt
>
> My question is: How can i get the Open() function to open a file from
> standard input so that I can bypass using a static file name? For
> example:
>
> Integer_File : FILE_TYPE;
> Open(Integer_File, In_File, "inputfile.txt"); <-- don't open
> inputfile.txt, open file from standard input instead
>
> I know that this can be done easily with Ada.Text_IO.Text_Streams,
> however I am stubborn and curious to see if there is a simple and easy
> way to do it with the Open() function.
>
> THanks
>
The following simple example works on red hat linux 8.0
with Ada.Text_IO;
procedure TestPassThru is
package Text_IO renames Ada.Text_IO;
begin
while not Text_IO.End_Of_File loop
declare
text : String( 1 .. 255 );
last : Natural;
begin
Text_IO.Get_Line( text, last );
Text_IO.Put_Line( text( 1 .. last ) );
end;
end loop;
end TestPassThru;
(Sorry for any typo's I had to copy the code from one screen to another).
Steve
(The Duck)
prev parent reply other threads:[~2005-10-13 3:15 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-10-13 0:49 Newbie Question: using Text_IO.Open() to read from standard input pamela.lum
2005-10-13 1:30 ` Anh Vo
2005-10-13 1:48 ` pamela.lum
2005-10-13 1:56 ` Anh Vo
2005-10-13 16:14 ` Martin Krischik
2005-10-13 1:58 ` tmoran
2005-10-13 2:02 ` pamela.lum
2005-10-13 2:19 ` Anh Vo
2005-10-13 5:26 ` Jeffrey R. Carter
2005-10-13 6:53 ` tmoran
2005-10-13 3:15 ` Steve [this message]
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