1 files changed, 63 insertions, 0 deletions
diff --git a/lib/coderay/scanners/rhtml.rb b/lib/coderay/scanners/rhtml.rb
new file mode 100644
index 0000000..77a4366
--- /dev/null
+++ b/lib/coderay/scanners/rhtml.rb
@@ -0,0 +1,63 @@
+module CodeRay module Scanners
+
+	load :html
+	load :ruby
+
+	# RHTML Scanner
+	# 
+	# $Id$
+	class RHTML < Scanner
+
+		include Streamable
+		register_for :rhtml
+
+		ERB_RUBY_BLOCK = /
+			<%(?!%)[=-]?
+			(?>
+				[^%]*
+				(?> %(?!>) [^%]* )* 
+			)
+			(?: %> )?
+		/x
+
+		START_OF_ERB = /
+			<%(?!%)
+		/x		
+
+	private
+		
+		def setup
+			@ruby_scanner = CodeRay.scanner :ruby, :tokens => @tokens, :keep_tokens => true
+			@html_scanner = CodeRay.scanner :html, :tokens => @tokens, :keep_tokens => true, :keep_state => true
+		end
+		
+		def scan_tokens tokens, options
+			
+			until eos?
+
+				if (match = scan_until(/(?=#{START_OF_ERB})/o) || scan_until(/\z/)) and not match.empty?
+					@html_scanner.tokenize match
+					
+				elsif match = scan(/#{ERB_RUBY_BLOCK}/o)
+					start_tag = match[/\A<%[-=]?/]
+					end_tag = match[/%?>?\z/]
+					tokens << [:open, :inline]
+					tokens << [start_tag, :delimiter]
+					code = match[start_tag.size .. -1 - end_tag.size]
+					@ruby_scanner.tokenize code
+					tokens << [end_tag, :delimiter] unless end_tag.empty?
+					tokens << [:close, :inline]
+
+				else
+					raise_inspect 'else-case reached!', tokens
+				end
+
+			end
+
+			tokens
+
+		end
+
+	end
+
+end end