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Top Forums Programming My first PERL incarnation... Audio Oscillograph Post 303038002 by wisecracker on Tuesday 20th of August 2019 02:18:10 PM
Old 08-20-2019
Hi MadeInGermany...

I didn't try the Perl builtin 'printf' as 'print' DID support terminal colours, so I made an assumption that 'printf' wouldn't plot either.

I will experiment with plotting using 'printf' and get back to you.
If I get stuck and plotting is still unable to be done then I will come back on here for solutions.

TIA.

EDIT:
Well a cold start with the builtin 'print' DOES work but believe me, I tried for hours with hard coded valus as well is variables and I kept getting an major 'scalar' error report finally ending up saying it couldn't complie the code - hence reverting to the 'system' command.

I honestly do not know why I kept getting major errors when now it is working..

Here is the original test code i couldn't get working, but it is actually calling me a liar now.
Code:
#!/usr/bin/perl
# plotter.pl

use warnings;
use strict;

# Centre of terminal window.
my $horiz=34;
my $vert=11;
my $plotter="\033["."$vert".";"."$horiz"."fHello World.\n";
print "$plotter";

And finally I am in the process of using 4 capture modes, DEMO, DSP, ALSA and QT, (DEMO is obviously working using the builtin random number generator but the final cut will create a raw 'noise' file using /dev/urandom).
I have already done the section to create the AppleScript and call it, but not done the binary file to byte sized decmial array or list yet but I am working on it...

Last edited by wisecracker; 08-20-2019 at 03:58 PM.. Reason: See EDIT:
 

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PERL-AFTER-UPGRADE(1)					User Contributed Perl Documentation				     PERL-AFTER-UPGRADE(1)

NAME
perl-after-upgrade -- fixup FreeBSD packages that depend on perl SYNOPSIS
perl-after-upgrade perl-after-upgrade -f perl-after-upgrade -v DESCRIPTION
The standard procedure after a perl port (either lang/perl5.6 or lang/perl5.8) upgrade is to basically reinstall all other packages that depend on perl. This is always a painful exercise. The perl-after-upgrade utility makes this process mostly unnecessary. The tool goes through the list of installed packages, looks for those that depend on perl, moves files around, modifies shebang lines in those scripts in which it is necessary to do so, tries its best to adjust dynamically linked binaries that link with libperl.so in the old path, and updates the package database. After installation of the new perl is complete, either by hand from the ports collection, or from a package, or via portupgrade, do the following: o go root; o run perl-after-upgrade utility. Do not specify any arguments at first, so it does nothing destructive. Pay attention to the produced output and especially to errorlist at the end, if any; o run the utility again, with -f command line option. This will actually do the work. Again, pay attention to the output produced; o fix any reported errors; o reinstall required packages: The utility will tell you what packages that depend on perl it could not handle. It will also tell you why it happened (for example, they were compiled against a binary incompatible perl). If you want such packages to remain operational, you will have to reinstall then by hand or via portupgrade. o review the files left in the older perl installation. This is typically /usr/local/lib/perl5/site_perl/5.X.Y/. There should be very little, if any, files in that directory and its subdi- rectories, excepting a number of .ph files; o check that things work as they should; o remove backup files from the package database. Those will be /var/db/pkg/*/+CONTENTS.bak; o that's all. COPYRIGHT AND LICENSE
Copyright 2005 by Anton Berezin "THE BEER-WARE LICENSE" (Revision 42) <tobez@FreeBSD.org> wrote this module. As long as you retain this notice you can do whatever you want with this stuff. If we meet some day, and you think this stuff is worth it, you can buy me a beer in return. Anton Berezin NO WARRANTY OF ANY KIND, USE AT YOUR OWN RISK. HISTORY
The first version of this utility was not bundled with perl package on FreeBSD. It was dumber than the current version in several impor- tant areas. It was faster. CREDITS
Thanks to Mathieu Arnold for discussion. SEE ALSO
perl(1). perl v5.8.9 2009-04-13 PERL-AFTER-UPGRADE(1)
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