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Gui to background application

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Subject: Gui to background application
From: wjgiddi...@googlemail.com (William Giddings)
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by: William Giddings - Sun, 24 Dec 2023 12:34 UTC

Fellow Tclers!

I want to create a ui to communicate with an active Linux shell application. The application takes input from stdin and outputs to stdout.

How can I capture the content of stdout and write to stdin such that the application sends and receives the correct responses?

Many thanks and seasons best wishes to all!

William

Re: Gui to background application

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From: ric...@example.invalid (Rich)
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Subject: Re: Gui to background application
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by: Rich - Sun, 24 Dec 2023 15:40 UTC

William Giddings <wjgiddings@googlemail.com> wrote:
> Fellow Tclers!
>
> I want to create a ui to communicate with an active Linux shell
> application. The application takes input from stdin and outputs to
> stdout.
>
> How can I capture the content of stdout and write to stdin such that
> the application sends and receives the correct responses?

Read the 'open' manpage, specifically the section about "command
pipelines".

Note that you will most likely want to set line buffering and to make
use of non-blocking event driven I/O to the channel connected to the
shell application.

Alternately, load the 'expect' extension
(https://core.tcl-lang.org/expect/index) and use expects tools to talk
to the shell application.

<moshez> ok, I will not marry Jo-Con-El's cow.

devel / comp.lang.tcl / Re: Gui to background application

Subject	Author
Gui to background application	William Giddings
Gui to background application	Rich