Checkout of Instiki Trunk 1/21/2007.

lib/chunks/literal.rb

@@ -0,0 +1,31 @@
+require 'chunks/chunk'
+
+# These are basic chunks that have a pattern and can be protected.
+# They are used by rendering process to prevent wiki rendering
+# occuring within literal areas such as <code> and <pre> blocks
+# and within HTML tags.
+module Literal
+
+  class AbstractLiteral < Chunk::Abstract
+
+    def initialize(match_data, content)
+      super
+      @unmask_text = @text
+    end
+
+  end
+
+  # A literal chunk that protects 'code' and 'pre' tags from wiki rendering.
+  class Pre < AbstractLiteral
+    PRE_BLOCKS = "a|pre|code"
+    PRE_PATTERN = Regexp.new('<('+PRE_BLOCKS+')\b[^>]*?>.*?</\1>', Regexp::MULTILINE)
+    def self.pattern() PRE_PATTERN end
+  end 
+
+  # A literal chunk that protects HTML tags from wiki rendering.
+  class Tags < AbstractLiteral
+    TAGS = "a|img|em|strong|div|span|table|td|th|ul|ol|li|dl|dt|dd"
+    TAGS_PATTERN = Regexp.new('<(?:'+TAGS+')[^>]*?>', Regexp::MULTILINE) 
+    def self.pattern() TAGS_PATTERN  end
+  end
+end