ansi256 is a rubygem for colorizing text with 256-color ANSI codes.
Features:
- Supports both named color codes and numeric 256-color codes
- Allows nesting of colored text
- Generates optimal(shortest) code sequence
$ gem install ansi256
require 'ansi256'
# Foreground color
puts "Colorize me".fg(111)
# With background color
puts "Colorize me".fg(111).bg(226)
# Also with underline
puts "Colorize me".fg(111).bg(226).underline
# Strip ANSI codes
puts "Colorize me".fg(111).bg(226).underline.plain
s = "Colorize me"
puts [ s.black, s.black.bold, s.white.bold.on_black ].join ' '
puts [ s.red, s.red.bold, s.white.bold.on_red ].join ' '
puts [ s.green, s.green.bold, s.white.bold.on_green ].join ' '
puts [ s.yellow, s.yellow.bold, s.white.bold.on_yellow ].join ' '
puts [ s.blue, s.blue.bold, s.white.bold.on_blue ].join ' '
puts [ s.magenta, s.magenta.bold, s.white.bold.on_magenta ].join ' '
puts [ s.cyan, s.cyan.bold, s.white.bold.on_cyan ].join ' '
puts [ s.white, s.white.bold, s.white.bold.on_white ].join ' '
puts "RGB Color (RRGGBB)".fg('ff9930').bg('203366')
puts "RGB Color (R-G-B-)".fg('f90').bg('036')
puts "RGB Color (Monochrome)".fg('ef').bg('3f')Unlike the other similar gems, Ansi256 allows you to nest colored text.
require 'ansi256'
puts world = "World".bg(226).fg(232).underline
puts hello_world = "Hello #{world} !".fg(230).bg(75)
puts say_hello_world = "Say '#{hello_world}'".fg(30)
puts say_hello_world.plain.fg(27)
Ansi256.fg(232)
Ansi256.bg(226)
Ansi256.green
Ansi256.on_green
Ansi256.bold
Ansi256.dim
Ansi256.italic
Ansi256.underline
Ansi256.reset
Ansi256.fg(232, 'Hello')
Ansi256.bg(226, 'World')
Ansi256.green('Hello World')Ansi256.enabled?
# true
# Print colored output only when STDOUT is tty
Ansi256.enabled = $stdout.tty?
"Hello".fg(232)
# HelloAnsi256 comes with ansi256 script which can be used as follows
usage: ansi256 [-b] [-d] [-i] [-u] <[fg][/bg]> [message]
# Numeric color codes
ansi256 232 "Hello world"
ansi256 /226 "Hello world"
ansi256 232/226 "Hello world"
# Named color codes
ansi256 yellow "Hello world"
ansi256 /blue "Hello world"
ansi256 yellow/blue "Hello world"
# RGB colors (only support 6-letter hex codes)
ansi256 ff9900/000033 "Hello world"
# Mixed color codes
ansi256 yellow/232 "Hello world"
# Bold yellow
ansi256 yellow/232 -b "Hello world"
# With underline
ansi256 yellow/232 -b -u "Hello world"
# Colorizing STDIN
find / | ansi256 -u /226
# Nesting
ansi256 30 "Say '$(ansi256 230/75 "Hello $(ansi256 -u 232/226 World)")'"require 'ansi256'
def cfmt col
col.to_s.rjust(5).fg(232).bg(col)
end
puts (0..7).map { |col| cfmt col }.join
puts (8..15).map { |col| cfmt col }.join
(16..255).each_slice(6) do |slice|
puts slice.map { |col| cfmt col }.join
end
- Fork it
- Create your feature branch (
git checkout -b my-new-feature) - Commit your changes (
git commit -am 'Add some feature') - Push to the branch (
git push origin my-new-feature) - Create new Pull Request
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