Skip to content

Instantly share code, notes, and snippets.

@hSATAC

hSATAC/256color.pl

Created July 20, 2011 14:48
Show Gist options

  • Select an option

    Learn more about clone URLs
  • Save hSATAC/1095100 to your computer and use it in GitHub Desktop.

Select an option

Learn more about clone URLs
Save hSATAC/1095100 to your computer and use it in GitHub Desktop.
Download ZIP

Revisions

  1. hSATAC created this gist Jul 20, 2011.
    63 changes: 63 additions & 0 deletions 256color.pl
    View file
    Original file line number Diff line number Diff line change
    @@ -0,0 +1,63 @@
    #!/usr/bin/perl
    # Author: Todd Larason <[email protected]>
    # $XFree86: xc/programs/xterm/vttests/256colors2.pl,v 1.2 2002/03/26 01:46:43 dickey Exp $

    # use the resources for colors 0-15 - usually more-or-less a
    # reproduction of the standard ANSI colors, but possibly more
    # pleasing shades

    # colors 16-231 are a 6x6x6 color cube
    for ($red = 0; $red < 6; $red++) {
    for ($green = 0; $green < 6; $green++) {
    for ($blue = 0; $blue < 6; $blue++) {
    printf("\x1b]4;%d;rgb:%2.2x/%2.2x/%2.2x\x1b\\",
    16 + ($red * 36) + ($green * 6) + $blue,
    ($red ? ($red * 40 + 55) : 0),
    ($green ? ($green * 40 + 55) : 0),
    ($blue ? ($blue * 40 + 55) : 0));
    }
    }
    }

    # colors 232-255 are a grayscale ramp, intentionally leaving out
    # black and white
    for ($gray = 0; $gray < 24; $gray++) {
    $level = ($gray * 10) + 8;
    printf("\x1b]4;%d;rgb:%2.2x/%2.2x/%2.2x\x1b\\",
    232 + $gray, $level, $level, $level);
    }


    # display the colors

    # first the system ones:
    print "System colors:\n";
    for ($color = 0; $color < 8; $color++) {
    print "\x1b[48;5;${color}m ";
    }
    print "\x1b[0m\n";
    for ($color = 8; $color < 16; $color++) {
    print "\x1b[48;5;${color}m ";
    }
    print "\x1b[0m\n\n";

    # now the color cube
    print "Color cube, 6x6x6:\n";
    for ($green = 0; $green < 6; $green++) {
    for ($red = 0; $red < 6; $red++) {
    for ($blue = 0; $blue < 6; $blue++) {
    $color = 16 + ($red * 36) + ($green * 6) + $blue;
    print "\x1b[48;5;${color}m ";
    }
    print "\x1b[0m ";
    }
    print "\n";
    }


    # now the grayscale ramp
    print "Grayscale ramp:\n";
    for ($color = 232; $color < 256; $color++) {
    print "\x1b[48;5;${color}m ";
    }
    print "\x1b[0m\n";