moshen/nyan.pl

## nyan.pl
#!/usr/bin/env perl
use warnings;
use strict;

# Animation frames...
#   Color ASCII escape sequences, gzipped and base64 encoded, because
#   I thought 300 lines of animation frames was a little much.
my @frames = ( q(
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) );

use Compress::Zlib;
use MIME::Base64;
use Time::HiRes qw( usleep gettimeofday );
use Getopt::Long;
use Pod::Usage;

@frames = split("::\n", Compress::Zlib::memGunzip(decode_base64($frames[0])));

my $options = {};
GetOptions( "loop_times=i" => \$options->{loop_t},
            "run_seconds=i" => \$options->{run_s},
            "utf8" => \$options->{utf8},
            "help" => \$options->{help}
          );

if( $options->{help} ){
  print_usage();
}

sub print_usage {
  pod2usage( { -message => $_[0] , -exitval => 1 , -verbose => 0 } );
}

if( $options->{utf8} ){
  @frames = @frames[12..23];
} else {
  @frames = @frames[0..11];
}

# Loop the animation per options set
my $loopcheck;

if( $options->{loop_t} ){
  $loopcheck = sub {
    if( $options->{loop_t} ){
      $options->{loop_t}--;
      return 1;
    } else {
      return 0;
    }
  };
} elsif( $options->{run_s} ){
  my $runtime = gettimeofday();
  $loopcheck = sub {
    if( (scalar(gettimeofday()) - $runtime) < $options->{run_s} ){
      return 1;
    } else {
      return 0;
    }
  };
} else {
  $loopcheck = sub {
    return 1;
  };
}

# Clear the screen
print "\033[2J";

# Animate!
while($loopcheck->()){
  my $frame = 0;
  while($frame < 12){
    print "\033[0;0H"; # Jump to 0,0
    print $frames[$frame++];
    usleep(70000);
  }
}

exit 0;

__END__

=head1 NAME

nyan - Your very own animated terminal Nyancat!

=head1 SYNOPSIS

nyan [options]

 Options:
   --help|-h            brief help message
   --loop_times|-l      number of times to loop the animation
   --run_seconds|-r     number of seconds to run the animation
   --utf8|-u            use utf8 half-blocks for pixels

If no options are specified, Nyancat will loop forever.

=head1 OPTIONS

=over 8

=item --help|-h

Prints a brief help message and exits.

=item --loop_times|-l

Number of times to loop the Nyancat animation.

=item --run_seconds|-r

Number of seconds to run the Nyancat animation.
Note:  This isn't exact.

=item --utf8|-u

Uses utf8 'half-block' characters to effectively double the
resolution in the terminal.  May not display properly and
depends on the font used.

=back

=head1 DESCRIPTION

This is a port of nyan in the L<Image::Term256Color> perl distribution
so it can be run on it's own, without installing any perl modules.
It includes Nyancat animation frames within the script for enjoyment
on 256 color terminals.

=head1 EXAMPLES

Run it already:

    nyan

=cut
	#!/usr/bin/env perl
	use warnings;
	use strict;

	# Animation frames...
	# Color ASCII escape sequences, gzipped and base64 encoded, because
	# I thought 300 lines of animation frames was a little much.
	my @frames = ( q(
	H4sIAHywIU8AA+1d23XkOA797xT8oxBst+11z4QyMVQO+7ExbIAbydrdVXqCeJOEKNQZnzMURIq4
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	) );

	use Compress::Zlib;
	use MIME::Base64;
	use Time::HiRes qw( usleep gettimeofday );
	use Getopt::Long;
	use Pod::Usage;

	@frames = split("::\n", Compress::Zlib::memGunzip(decode_base64($frames[0])));

	my $options = {};
	GetOptions( "loop_times=i" => \$options->{loop_t},
	"run_seconds=i" => \$options->{run_s},
	"utf8" => \$options->{utf8},
	"help" => \$options->{help}
	);

	if( $options->{help} ){
	print_usage();
	}

	sub print_usage {
	pod2usage( { -message => $_[0] , -exitval => 1 , -verbose => 0 } );
	}

	if( $options->{utf8} ){
	@frames = @frames[12..23];
	} else {
	@frames = @frames[0..11];
	}

	# Loop the animation per options set
	my $loopcheck;

	if( $options->{loop_t} ){
	$loopcheck = sub {
	if( $options->{loop_t} ){
	$options->{loop_t}--;
	return 1;
	} else {
	return 0;
	}
	};
	} elsif( $options->{run_s} ){
	my $runtime = gettimeofday();
	$loopcheck = sub {
	if( (scalar(gettimeofday()) - $runtime) < $options->{run_s} ){
	return 1;
	} else {
	return 0;
	}
	};
	} else {
	$loopcheck = sub {
	return 1;
	};
	}

	# Clear the screen
	print "\033[2J";

	# Animate!
	while($loopcheck->()){
	my $frame = 0;
	while($frame < 12){
	print "\033[0;0H"; # Jump to 0,0
	print $frames[$frame++];
	usleep(70000);
	}
	}

	exit 0;

	__END__

	=head1 NAME

	nyan - Your very own animated terminal Nyancat!

	=head1 SYNOPSIS

	nyan [options]

	Options:
	--help\|-h brief help message
	--loop_times\|-l number of times to loop the animation
	--run_seconds\|-r number of seconds to run the animation
	--utf8\|-u use utf8 half-blocks for pixels

	If no options are specified, Nyancat will loop forever.

	=head1 OPTIONS

	=over 8

	=item --help\|-h

	Prints a brief help message and exits.

	=item --loop_times\|-l

	Number of times to loop the Nyancat animation.

	=item --run_seconds\|-r

	Number of seconds to run the Nyancat animation.
	Note: This isn't exact.

	=item --utf8\|-u

	Uses utf8 'half-block' characters to effectively double the
	resolution in the terminal. May not display properly and
	depends on the font used.

	=back

	=head1 DESCRIPTION

	This is a port of nyan in the L<Image::Term256Color> perl distribution
	so it can be run on it's own, without installing any perl modules.
	It includes Nyancat animation frames within the script for enjoyment
	on 256 color terminals.

	=head1 EXAMPLES

	Run it already:

	nyan

	=cut