#!/usr/bin/perl

#use strict;
use Tkx;
use Digest::CRC;;
use Win32::HideConsole;

hide_console;
sub trim($);

my $mw = Tkx::widget->new('.');
$mw->g_wm_title("CRC32 Calculator");
$mw->g_wm_minsize( 100, 200 );

my $asciicrc,$hexcrc;
# Command Buttons
my $asciiconversion = $mw->new_ttk__button( -text => "ASCII Conversion", -width => 20, -command => sub { ascii(); } );
Tkx::grid( $asciiconversion, -row => 1, -columnspan => 1, -padx => 5, -pady => 5 );
my $hexconversion = $mw->new_ttk__button( -text => "HEX Conversion", -width => 20, -command => sub { hexa(); } );
Tkx::grid( $hexconversion, -row => 2, -columnspan => 2, -padx => 0, -pady => 0 );


# Text Boxes
my $text;
my $input = $mw->new_tk__text( -width => 40, -height => 5, -state => "normal", -wrap => "none" );
my $output = $mw->new_tk__text( -width => 40, -height => 5, -state => "normal", -wrap => "none" );
Tkx::grid( $input, -row => 3, -columnspan => 1, -padx => 10, -pady => 10 );
Tkx::grid( $output, -row => 4, -columnspan => 2, -padx => 10, -pady => 10 );



Tkx::MainLoop();

sub ascii 
{
my $asciicontent = $input->get("1.0", "end");
my $asciitrim =  asciitrimm($asciicontent)."\n";
sub asciitrimm($)
{
	my $asciicontent = shift;
	$asciicontent =~ s/^\s+//;
	$asciicontent =~ s/\s+$//;
	$asciicrc = Digest::CRC->new( type => "crc32" ) ;
	$asciicrc->add($asciicontent);
	my $asciiout=$asciicrc->hexdigest();
	$output->m_insert('end', "$asciicontent$asciiout\n");
	$output->m_yview('end');
}
}

sub hexa 
{
my $hexcontent = $input->get("1.0", "end");
my $hextrim = hextrimm($hexcontent)."\n";
sub hextrimm($)
{
	my $hexcontent = shift;
	$hexcontent =~ s/^\s+//;
	$hexcontent =~ s/\s+$//;
	$hexcrc = Digest::CRC->new(type=>"crc32");;
	my $hexout= $hexcrc->add( pack 'H*', $hexcontent)->hexdigest;;
	$output->m_insert('end', "$hexcontent$hexout\n");
	$output->m_yview('end');
}
}