Colcolor

Easily colorize terminal text by each column.

Add this line to your application's Gemfile:

gem 'colcolor'

And then execute:

$ bundle

Or install it yourself as:

$ gem install colcolor

You want to colorize terminal outputs in which each column(separated by whitespaces) have different color.

It can be easily achieved with String#colco method as follows:

require "colcolor"

list = <<-EOS
Charlie\t21\tprogrammer
Bill\t43\tdoctor
Liz\t18\tstudent
EOS

list.each_line do |line|
  puts line.colco(:green, :yellow, :blue)
end

Output:

If you want to have background colors or some decorations onto them, chain the names with underscores:

list.each_line do |line|
  puts line.colco(:green, :red_yellow, :blue_underline)
end

Output:

If you prefer ages(second column) without color, pass nil for it:

list.each_line do |line|
  puts line.colco(:green, nil, :blue_underline)
end

Output:

You have full names in the list and want to apply bgcolor for them, regexp option might helps you.

list = <<-EOS
Charlie Brown\t21\tprogrammer
Bill Clinton\t43\tdoctor
Liz Taylor\t18\tstudent
EOS

# less appropriate example:

list.each_line do |line|
  puts line.colco(:bg_green, :bg_green, :yellow, :blue_underline)
end

puts

# example with regexp option:

re = /^.*?(?=\t)|\S+/ # match any characters before the first tab or non whitespaces

list.each_line do |line|
  puts line.colco(:bg_green, :yellow, :blue_underline, regexp:re)
end

Output:

If you want to apply colors periodically to a text, set cyclic option to true.

"H E L L O W O R L D".colco(:red, :green, :yellow, cyclic:true)

Output:

1. Fork it ( https://github.com/[my-github-username]/colcolor/fork )
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create a new Pull Request