Module AssetHat::CSS::Engines

  1. lib/asset_hat/css.rb

Swappable CSS minification engines. Each accepts and returns a string.

Methods

public class

  1. cssmin
  2. weak

Public class methods

cssmin (input_string)

CSS minification engine that mostly uses the CSSMin gem, a Ruby port of Lecomte’s YUI Compressor and Schlueter’s PHP cssmin.

Sources:

[show source] 
     # File lib/asset_hat/css.rb, line 116
116:       def self.cssmin(input_string)
117:         output = CSSMin.minify(input_string)
118: 
119:         # Remove rules that have empty declaration blocks
120:         output.gsub!(/\}([^\}]+\{;\}){1,}/, '}')
121: 
122:         output
123:       end
weak (input_string)

Barebones CSS minification engine that only strips whitespace from the start and end of every line, including linebreaks. For safety, doesn’t attempt to parse the CSS itself.

[show source] 
     # File lib/asset_hat/css.rb, line 94
 94:       def self.weak(input_string)
 95:         input   = StringIO.new(input_string)
 96:         output  = StringIO.new
 97: 
 98:         input.each do |line|
 99:           # Remove indentation and trailing whitespace (including line breaks)
100:           line.strip!
101:           next if line.blank?
102: 
103:           output.write line
104:         end
105: 
106:         output.rewind
107:         output.read
108:       end