Module: UnusedCSS

Includes:
CssParser
Defined in:
lib/dead_css.rb

Defined Under Namespace

Classes: Selector

Constant Summary collapse

CSS_EXTENSIONS = 
['css', 'scss']
ASSETS_EXTENSIONS = 
['html', 'js', 'coffee', 'haml']
SPLIT_REGEX = 
/(?:\s|>|~)+/
SELECTOR_REGEX = 
/((\.|#)\w+)/

Class Method Summary collapse

Class Method Details

.css_selectors(path) ⇒ Object 



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# File 'lib/dead_css.rb', line 34

def self.css_selectors(path)
  parser = CssParser::Parser.new
  parser.load_file!(path)
  selectors = []
  parser.each_selector { |selector, declarations, specificity| selectors << selector }
  selectors.map(&:split).flatten.uniq
end

.elementary_selectors(composed_selector) ⇒ Object 



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# File 'lib/dead_css.rb', line 42

def self.elementary_selectors(composed_selector)
  composed_selector.split(/(?:\s|>|~)+/).map do |s|
    SELECTOR_REGEX.match(s)
  end.flatten.compact.map(&:to_s)
end

.files_by_extensions(root, extensions) ⇒ Object 



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# File 'lib/dead_css.rb', line 30

def self.files_by_extensions(root, extensions)
  extensions.map { |ext| Dir.glob("#{root}/**/*.#{ext}") }.flatten
end

.unmatched_selectors(selectors, files) ⇒ Object 



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# File 'lib/dead_css.rb', line 48

def self.unmatched_selectors(selectors, files)
  unmatched_selectors = Array.new(selectors)
  files.each do |file|
    lines = File.readlines(file)
    unmatched_selectors.delete_if { |selector| lines.grep(Regexp.new(selector.value)).size > 0 }
  end
  unmatched_selectors
end