Upgrade CodeRay to 0.9.2 (#3359).

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@3592 e93f8b46-1217-0410-a6f0-8f06a7374b81

vendor/plugins/coderay-0.9.2/lib/coderay/encoders/html/css.rb

@@ -0,0 +1,70 @@
+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