Class: CSSDeadClass

Inherits:
Object
  • Object
show all
Defined in:
lib/css_dead_class.rb

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(opts = {}) ⇒ CSSDeadClass

Returns a new instance of CSSDeadClass.



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# File 'lib/css_dead_class.rb', line 21

def initialize(opts={})
  @options = self.class.config.dup
  opts.each do |k, v|
    @options[k] = v
  end
end

Class Method Details

.config ⇒ Object 



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# File 'lib/css_dead_class.rb', line 11

def self.config
  @_config ||= Config.new
end

.option(key, default = nil, description = nil, options = {}) ⇒ Object 



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# File 'lib/css_dead_class.rb', line 14

def self.option(key, default=nil, description=nil, options={})
  self.config[key] = Config.new(default: default, description: description, options: {})
end

Instance Method Details

#parse ⇒ Object 



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# File 'lib/css_dead_class.rb', line 28

def parse
  cssSelectors = []
  cssFiles = @options.css_files
  htmlFiles = @options.html_files
  classesToKeep = @options.classes_to_keep
  if cssFiles.length > 0
    parser = CssParser::Parser.new
    cssFiles.each do |cssFile|
      parser.load_file!(cssFile)
    end 
    parser.each_selector(:screen).each do |rule|
      rule = rule[:rules]
      rule.selectors.each do |segment|
        segment.split(/(?: |\+|>)/).each do |r|
          next if r.include? ":"
          if(r[0] == ".")
            cssSelectors.push(r)
          elsif(r.include? ".")
            s = r.split(".")
            s.shift
            s.each { |v| cssSelectors.push('.' + v)}
          end
        end
      end
    end
    cssSelectors.uniq!
  end
  if cssSelectors.length > 0
    htmlFiles.each do |htmlFile|
      htmlDoc = Nokogiri::HTML(IO.read(htmlFile))
      htmlDoc.css('*').each do |node|
        next if node.attributes.nil? or node.attributes['class'].nil?
        node['class'] = node.attributes['class'].value.split(/ /).select{ |cn| 
          cssSelectors.include?('.' + cn) || classesToKeep.include?(cn) || classesToKeep.include?('.' + cn)
        }.join(" ")
        if(node.attributes['class'].value == "")
          node.attributes['class'].remove
        end
      end
      File.open(htmlFile, "w") do |fp|
        fp.puts htmlDoc.to_s
      end
    end
  end
end