module CodeRay module Encoders class HTML class CSS attr :stylesheet def CSS.load_stylesheet style = nil CodeRay::Styles[style] end def initialize style = :default @classes = Hash.new style = CSS.load_stylesheet style @stylesheet = [ style::CSS_MAIN_STYLES, style::TOKEN_COLORS.gsub(/^(?!$)/, '.CodeRay ') ].join("\n") parse style::TOKEN_COLORS end def [] *styles cl = @classes[styles.first] return '' unless cl style = '' 1.upto(styles.size) do |offset| break if style = cl[styles[offset .. -1]] end # warn 'Style not found: %p' % [styles] if style.empty? return style end private CSS_CLASS_PATTERN = / ( # $1 = selectors (?: (?: \s* \. [-\w]+ )+ \s* ,? )+ ) \s* \{ \s* ( [^\}]+ )? # $2 = style \s* \} \s* | ( . ) # $3 = error /mx def parse stylesheet stylesheet.scan CSS_CLASS_PATTERN do |selectors, style, error| raise "CSS parse error: '#{error.inspect}' not recognized" if error for selector in selectors.split(',') classes = selector.scan(/[-\w]+/) cl = classes.pop @classes[cl] ||= Hash.new @classes[cl][classes] = style.to_s.strip.delete(' ').chomp(';') end end end end end end end if $0 == __FILE__ require 'pp' pp CodeRay::Encoders::HTML::CSS.new end