TermColorLight

This gem is library that convert color tags (e.g. <red>str</red> ) to ansicolor(vt100 escape sequence). And this's lightweight version of TermColor.gem without other gems. In addition process spedd is surprisingly fast.

Installation

Add this line to your application's Gemfile:

gem 'termcolorlight'

And then execute:

$ bundle

Or install it yourself as:

$ gem install termcolorlight

Usage

require "termcolorlight"

TermColorLight.parse("<red>strings</red>")  # => \e[31mstrings\e[0m
"<red>strings</red>".termcolor  # a ditto

str = "<div>container</div>"
"<bold><green>#{str.escape}</green></bold>".termcolor  # => \e[1m\e[32m<div>container</div>\e[0m\e[1m\e[0m

require "termcolorlight/html"
str = "<div>container</div>"
TermColorLight.to_html("<bold><green>#{str.escape}</green></bold>")
# => <span style="font-weight:bold"><span style="color:lime">&lt;div&gt;container&lt;/div&gt;</span></span>

You can use the following tags.

# forground tags
black, red, green, yellow, blue, magenta, cyan, white, gray

# background tags
on_black, on_red, on_green, on_yellow, on_blue, on_magenta, on_cyan, on_white, on_gray

# decorations
bold, dark, underline, underscore, blink, reverse, concealed

Benchmark

Code

require "termcolor"
require "termcolorlight"
require "benchmark"

n = 100000
Benchmark.bm(20) do |bm|
  bm.report "TermColor.parse" do
    n.times do
      TermColor.parse("<red>red</red>")
    end
  end
  bm.report "TermColorLight.parse" do
    n.times do
      TermColorLight.parse("<red>red</red>")
    end
  end
end

Results

Performed by OSX.

Use ruby 2.0.0p451

                           user     system      total        real
TermColor.parse       13.770000   5.830000  19.600000 ( 19.595587)
TermColorLight.parse   2.880000   0.010000   2.890000 (  2.899383)

You could see that processing speed of TermColorLight is much faster than TermColor's one.

Use ruby 2.2.0 (2014-08-20 trunk 47225 [x86_64-darwin13])

                           user     system      total        real
TermColor.parse       12.960000   4.720000  17.680000 ( 17.674688)
TermColorLight.parse   0.850000   0.000000   0.850000 (  0.853439)

Oops...

Changelogs

version 1.1.0 (2014/10/03)

add a method TermColorLight.to_html
- Perfect emuration of terminal

Contributing

Fork it ( https://github.com/whiteleaf7/termcolorlight/fork )
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 a new Pull Request