Added syntax highlightment for repository files (using CodeRay).

Supported languages: c, ruby, rhtml, yaml, html, xml.

git-svn-id: http://redmine.rubyforge.org/svn/trunk@644 e93f8b46-1217-0410-a6f0-8f06a7374b81

vendor/plugins/coderay-0.7.6.227/lib/coderay/encoders/html/numerization.rb

@@ -0,0 +1,122 @@
+module CodeRay
+module Encoders
+
+  class HTML
+
+    module Output
+
+      def numerize *args
+        clone.numerize!(*args)
+      end
+
+=begin      NUMERIZABLE_WRAPPINGS = {
+        :table => [:div, :page, nil],
+        :inline => :all,
+        :list => [:div, :page, nil]
+      }
+      NUMERIZABLE_WRAPPINGS.default = :all
+=end
+      def numerize! mode = :table, options = {}
+        return self unless mode
+
+        options = DEFAULT_OPTIONS.merge options
+
+        start = options[:line_number_start]
+        unless start.is_a? Integer
+          raise ArgumentError, "Invalid value %p for :line_number_start; Integer expected." % start
+        end
+
+        #allowed_wrappings = NUMERIZABLE_WRAPPINGS[mode]
+        #unless allowed_wrappings == :all or allowed_wrappings.include? options[:wrap]
+        #  raise ArgumentError, "Can't numerize, :wrap must be in %p, but is %p" % [NUMERIZABLE_WRAPPINGS, options[:wrap]]
+        #end
+
+        bold_every = options[:bold_every]
+        bolding =
+          if bold_every == false
+            proc { |line| line.to_s }
+          elsif bold_every.is_a? Integer
+            raise ArgumentError, ":bolding can't be 0." if bold_every == 0
+            proc do |line|
+              if line % bold_every == 0
+                "<strong>#{line}</strong>"  # every bold_every-th number in bold
+              else
+                line.to_s
+              end
+            end
+          else
+            raise ArgumentError, 'Invalid value %p for :bolding; false or Integer expected.' % bold_every
+          end
+
+        case mode
+        when :inline
+          max_width = (start + line_count).to_s.size
+          line = start
+          gsub!(/^/) do
+            line_number = bolding.call line
+            indent = ' ' * (max_width - line.to_s.size)
+            res = "<span class=\"no\">#{indent}#{line_number}</span> "
+            line += 1
+            res
+          end
+
+        when :table
+          # This is really ugly.
+          # Because even monospace fonts seem to have different heights when bold,
+          # I make the newline bold, both in the code and the line numbers.
+          # FIXME Still not working perfect for Mr. Internet Exploder
+          # FIXME Firefox struggles with very long codes (> 200 lines)
+          line_numbers = (start ... start + line_count).to_a.map(&bolding).join("\n")
+          line_numbers << "\n"  # also for Mr. MS Internet Exploder :-/
+          line_numbers.gsub!(/\n/) { "<tt>\n</tt>" }
+
+          line_numbers_table_tpl = TABLE.apply('LINE_NUMBERS', line_numbers)
+          gsub!(/\n/) { "<tt>\n</tt>" }
+          wrap_in! line_numbers_table_tpl
+          @wrapped_in = :div
+
+        when :list
+          opened_tags = []
+          gsub!(/^.*$\n?/) do |line|
+            line.chomp!
+
+            open = opened_tags.join
+            line.scan(%r!<(/)?span[^>]*>?!) do |close,|
+              if close
+                opened_tags.pop
+              else
+                opened_tags << $&
+              end
+            end
+            close = '</span>' * opened_tags.size
+
+            "<li>#{open}#{line}#{close}</li>"
+          end
+          wrap_in! LIST
+          @wrapped_in = :div
+
+        else
+          raise ArgumentError, 'Unknown value %p for mode: expected one of %p' %
+            [mode, [:table, :list, :inline]]
+        end
+
+        self
+      end
+
+      def line_count
+        line_count = count("\n")
+        position_of_last_newline = rindex(?\n)
+        if position_of_last_newline
+          after_last_newline = self[position_of_last_newline + 1 .. -1]
+          ends_with_newline = after_last_newline[/\A(?:<\/span>)*\z/]
+          line_count += 1 if not ends_with_newline
+        end
+        line_count
+      end
+
+    end
+
+  end
+
+end
+end