Reference

Term::ExtendedColor(3pm)

Color screen output using 256 colors

NAME

Term::ExtendedColor - Color screen output using 256 colors

SYNOPSIS

    use Term::ExtendedColor qw(:all);
    # Or use the 'attributes' tag to only import the functions for setting
    # attributes.
    # This will import the following functions:
    # fg(), bg(), bold(), underline(), inverse(), italic(), clear()
    use Term::ExtendedColor ':attributes';
    ## Foreground colors
    my $red_text = fg('red2', 'this is in red');
    my $spring   = fg('springgreen3', 'this is green');
    ## Background colors
    print bg('red5', "Default foreground text on dark red background"), "\n";
    my $red_on_green = fg('red3', bg('green12', 'Red text on green background'));
    print "$red_on_green\n";
    ## Fall-through attributes
    Term::ExtendedColor::autoreset(0);
    my $bold  = fg('bold', 'This is bold');
    my $red   = fg('red2', 'This is red... and bold');
    my $green = bg('green28', 'This is bold red on green background');
    # Make sure to clear all attributes when autoreset turned OFF,
    # or else the users shell will be messed up
    my $clear = clear();
    print "$bold\n";
    print "$red\n";
    print "$green $clear\n";
    ## Non-color attributes
    # Turn on autoreset again
    Term::ExtendedColor::autoreset(1);
    for(qw(italic underline blink reverse bold)) {
      print fg($_, $_), "\n";
    }
    # For convenience
    my $bolded = bold("Bold text!");
    my $italic = italic("Text in italics!");
    ## Remove all attributes from input data
    my @colored;
    push(@colored, fg('bold', fg('red2', 'Bold and red')));
    push(@colored, fg('green13', fg('italic', 'Green, italic')));
    print "$_\n" for @colored;
    print "$_\n" for uncolor(@colored);

DESCRIPTION

Term::ExtendedColor provides functions for sending so called extended escape sequences to the terminal. This ought to be used with a 256-color compatible terminal; see the NOTES section for a matrix of terminal emulators currently supporting this.

EXPORTS

None by default.

Two tags are provided for convience:

  # Import all functions
  use Term::ExtendedColor qw(:all);
  # Import functions for setting attributes
  # fg(), bg(), bold(), italic(), underline(), inverse(), clear()
  use Term::ExtendedColor qw(:attributes);

FUNCTIONS

fg($color, $string)

  my $green = fg('green2', 'green foreground');
  my @blue  = fg('blue4',  ['takes arrayrefs as well']);
  my $x_color = fg('mediumorchid1', 'Using mappings from the X11 rgb.txt');
  my $arbitary_color = fg(4, 'This is colored in the fifth ANSI color');
  my $raw_seq = fg('38;5;197;48;5;53;1;3;4;5;7', 'this works too');

Set foreground colors and attributes.

See "COLORS AND ATTRIBUTES" for valid first arguments. Additionally, colors can be specified using their index value:

  my $yellow = fg(220, 'Yellow');

If the internal $AUTORESET variable is non-zero (default), every element in the list of strings will be wrapped in escape sequences in such a way that the requested attributes will be set before the string and reset to defaults after the string.

Fall-through attributes can be enabled by setting $AUTORESET to a false value.

  Term::ExtendedColor::autoreset( 0 );
  my $red   = fg('red1', 'Red');
  my $green = fg('green1', 'Green');
  print "Text after $red is red until $green\n";
  print "Text is still green, ", bold('and now bold as well!');
  # If you exit now without resetting the colors and attributes, chances are
  # your prompt will be messed up.
  clear(); # All back to normal

If an invalid attribute is passed, the original data will be returned unmodified.

If no attribute is passed, thrown an exception.

bg($color, $string)

  my $green_bg = bg('green4', 'green background');
  my @blue_bg  = bg('blue6',  ['blue background']);

Like "fg()", but sets background color.

uncolor($string) | uncolour($string)

  my $stripped = uncolor($colored_data);
  my @no_color = uncolor(\@colored);
  my @no_color = uncolor(@colored);

Remove all attribute and color escape sequences from the input.

See uncolor for a command-line utility using this function.

get_colors() | get_colours()

  my $colors = get_colors();

Returns a hash reference with all available attributes and colors.

clear()

When called in scalar context, returns the escape sequence that resets all attributes to their defaults.

When called in void context, prints it directly.

autoreset()

Turn autoreset on/off. Enabled by default.

  Term::ExtendedColor::autoreset( 0 ); # Turn off autoreset

bold(\@data)

Convenience function that might be used in place of "fg('bold', \@data)";

When called without arguments, returns a a string that turns off the bold attribute.

italic(\@data)

Convenience function that might be used in place of "fg('italic', \@data)";

When called without arguments, returns a a string that turns off the italics attribute.

underline(\@data)

Convenience function that might be used in place of "fg('underline', \@data)";

When called without arguments, returns a a string that turns off the underline attribute.

inverse(\@data)

Reverse video / inverse. Convenience function that might be used in place of "fg('inverse', \@data)";

When called without arguments, returns a a string that turns off the inverse attribute.

NOTES

The codes generated by this module complies to the extension of the ANSI colors standard first implemented in xterm in 1999. The first 16 color indexes (0 - 15) is the regular ANSI colors, while index 16 - 255 is the extension. Not all terminal emulators support this extension, though I've had a hard time finding one that doesn't. :)

  Terminal    256 colors
  ----------------------
  aterm               no
  eterm              yes
  gnome-terminal     yes
  konsole            yes
  lxterminal         yes
  mrxvt              yes
  roxterm            yes
  rxvt                no
  rxvt-unicode       yes *
  sakura             yes
  terminal           yes
  terminator         yes
  vte                yes
  xterm              yes
  iTerm2             yes
  Terminal.app        no
  GNU Screen         yes
  tmux               yes
  TTY/VC              no

* Previously needed a patch. Full support was added in version 9.09.

There's no way to give these extended colors meaningful names.

Our first thought was to map them against some standard color names, like those in the HTML 4.0 specification or the SVG one. They didn't match.

Therefore, they are named by their base color (red, green, magenta) plus index; The first index (always 1) is the brightest shade of that particular color, while the last index is the darkest.

It's also possible to use some X color names, as defined in "rgb.txt". Do note that the color values do not match exactly; it's just an approximation.

A full list of available colors can be retrieved with "get_colors()". See "COLORS AND ATTRIBUTES" for full list. All mapped colors can also be retrieved programmatically with "get_colors()".

COLORS AND ATTRIBUTES

Attributes

  reset, clear, normal        reset all attributes
  bold, bright                bold or bright, depending on implementation
  faint                       decreased intensity (not widely supported)
  italic, cursive             italic or cursive
  underline, underscore       underline
  blink                       slow blink
  blink_ms                    rapid blink (only supported in MS DOS)
  reverse, inverse, negative  reverse video
  conceal                     conceal, or hide (not widely supported)

Standard color map

  FIRST       LAST
  red1        red5
  blue1       blue17
  cyan1       cyan24
  gray1       gray24
  green1      green28
  orange1     orange5
  purple1     purple30
  yellow1     yellow18
  magenta1    magenta26

X color names

  aquamarine1
  aquamarine3
  blueviolet
  cadetblue1
  cadetblue2
  chartreuse1
  chartreuse2
  chartreuse3
  chartreuse4
  cornflowerblue
  cornsilk1
  darkblue
  darkcyan
  darkgoldenrod
  darkgreen
  darkkhaki
  darkmagenta1
  darkmagenta2
  darkolivegreen1
  darkolivegreen2
  darkolivegreen3
  darkolivegreen4
  darkolivegreen5
  darkorange3
  darkorange4
  darkorange1
  darkred1
  darkred2
  darkseagreen1
  darkseagreen2
  darkseagreen3
  darkseagreen4
  darkslategray1
  darkslategray2
  darkslategray3
  darkturquoise
  darkviolet
  deeppink1
  deeppink2
  deeppink3
  deeppink4
  deepskyblue1
  deepskyblue2
  deepskyblue3
  deepskyblue4
  deepskyblue4
  dodgerblue1
  dodgerblue2
  dodgerblue3
  gold1
  gold3
  greenyellow
  grey0
  grey100
  grey11
  grey15
  grey19
  grey23
  grey27
  grey30
  grey3
  grey35
  grey37
  grey39
  grey42
  grey46
  grey50
  grey53
  grey54
  grey58
  grey62
  grey63
  grey66
  grey69
  grey70
  grey74
  grey7
  grey78
  grey82
  grey84
  grey85
  grey89
  grey93
  honeydew2
  hotpink2
  hotpink3
  hotpink
  indianred1
  indianred
  khaki1
  khaki3
  lightcoral
  lightcyan1
  lightcyan3
  lightgoldenrod1
  lightgoldenrod2
  lightgoldenrod3
  lightgreen
  lightpink1
  lightpink3
  lightpink4
  lightsalmon1
  lightsalmon3
  lightsalmon3
  lightseagreen
  lightskyblue1
  lightskyblue3
  lightskyblue3
  lightslateblue
  lightslategrey
  lightsteelblue1
  lightsteelblue3
  lightsteelblue
  lightyellow3
  mediumorchid1
  mediumorchid3
  mediumorchid
  mediumpurple1
  mediumpurple2
  mediumpurple3
  mediumpurple4
  mediumpurple
  mediumspringgreen
  mediumturquoise
  mediumvioletred
  mistyrose1
  mistyrose3
  navajowhite1
  navajowhite3
  navyblue
  orangered1
  orchid1
  orchid2
  orchid
  palegreen1
  palegreen3
  paleturquoise1
  paleturquoise4
  palevioletred1
  pink1
  pink3
  plum1
  plum2
  plum3
  plum4
  purple
  rosybrown
  royalblue1
  salmon1
  sandybrown
  seagreen1
  seagreen2
  seagreen3
  skyblue1
  skyblue2
  skyblue3
  slateblue1
  slateblue3
  springgreen1
  springgreen2
  springgreen3
  springgreen4
  steelblue1
  steelblue3
  steelblue
  tan
  thistle1
  thistle3
  turquoise2
  turquoise4
  violet
  wheat1
  wheat4

In addition, it's also possible to pass raw color;attr strings like so:

    my $foo = fg('48;5;89;38;5;197;1;3;4;7', 'foo');

Even though the fg() function is used, we set the following attributes:

  background => 89
  foreground => 197
  bold
  italic
  underline
  reverse

SEE ALSO

Term::ExtendedColor::Xresources Term::ExtendedColor::TTY Term::ANSIColor

AUTHOR

  Magnus Woldrich
  CPAN ID: WOLDRICH
  [email protected]
  http://github.com/trapd00r
  http://japh.se

CONTRIBUTORS

Varadinsky <https://github.com/Varadinsky>

COPYRIGHT

Copyright 2010, 2011, 2018, 2019- the Term::ExtendedColor "AUTHOR" and "CONTRIBUTORS" as listed above.

LICENSE

This library is free software; you may redistribute it and/or modify it under the same terms as Perl itself.

History