Capture user input AND read after it has been modified

Allasso has asked for the wisdom of the Perl Monks concerning the following question:

I am working on a small editor that runs inside a terminal window. I am currently capturing user input using the following construct:

use IO::Handle;
my $stdin = new IO::Handle;
   $stdin->fdopen( fileno( STDIN ), "r" ) || die "Cannot open STDIN";

while ( my $char = $stdin->getc() ) {
  # ... etc etc
[download]

The capturing is to deal with such things as arrow keys so the user (me) can navigate and more easily edit text before submitting. I am wondering if there is a way, AFTER the user has done their editing, and submits, can the text that is displayed in the terminal be read in its updated form from the terminal? This would save me having to track every input event to construct the final string. Thanks!

Comment on Capture user input AND read after it has been modified Download Code

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Re: Capture user input AND read after it has been modified by LanX (Saint) on Apr 29, 2019 at 01:17 UTC
AFAIR Term::ReadLine it's possible ... ... but did you consider using Curses? It has an editor widget Curses::UI::TextEditor . Curses::UI::Tutorial describes how to built a small editor app. This will certainly save you headaches! Cheers Rolf _{(addicted to the Perl Programming Language :) Wikisyntax for the Monastery FootballPerl is like chess, only without the dice}	[reply]
Re^2: Capture user input AND read after it has been modified by Allasso (Monk) on Apr 29, 2019 at 01:25 UTC
Oh yeah, forgot to mention, relying on Cpan modules would definitely be a headache for me. I am hopping around to different machines frequently, and I can't be geeking around trying to install modules in unfamiliar environments when I just need to run a script pronto, especially say, a Mac that doesn't have dev tools installed, etc. Non-reliance on Cpan gives me maximum portability.	[reply]
Re^3: Capture user input AND read after it has been modified by hdb (Monsignor) on Apr 29, 2019 at 07:51 UTC
Except under Win, there should be `vi` on most machines... Regards from the past, Sincerely yours, hdb	[reply] [d/l]
Re^4: Capture user input AND read after it has been modified by Allasso (Monk) on Apr 29, 2019 at 11:43 UTC


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