Checkout of Instiki Trunk 1/21/2007.

lib/chunks/engines.rb

@@ -0,0 +1,62 @@
+$: << File.dirname(__FILE__) + "../../lib"
+
+require_dependency 'chunks/chunk'
+
+# The markup engines are Chunks that call the one of RedCloth
+# or RDoc to convert text. This markup occurs when the chunk is required
+# to mask itself.
+module Engines
+  class AbstractEngine < Chunk::Abstract
+
+    # Create a new chunk for the whole content and replace it with its mask.
+    def self.apply_to(content)
+      new_chunk = self.new(content)
+      content.replace(new_chunk.mask)
+    end
+
+    private 
+
+    # Never create engines by constructor - use apply_to instead
+    def initialize(content) 
+      @content = content
+    end
+
+  end
+
+  class Textile < AbstractEngine
+    def mask
+      require_dependency 'redcloth'
+      redcloth = RedCloth.new(@content, [:hard_breaks] + @content.options[:engine_opts])
+      redcloth.filter_html = false
+      redcloth.no_span_caps = false  
+      redcloth.to_html(:textile)
+    end
+  end
+
+  class Markdown < AbstractEngine
+    def mask
+      require_dependency 'bluecloth_tweaked'
+      BlueCloth.new(@content, @content.options[:engine_opts]).to_html
+    end
+  end
+
+  class Mixed < AbstractEngine
+    def mask
+      require_dependency 'redcloth'
+      redcloth = RedCloth.new(@content, @content.options[:engine_opts])
+      redcloth.filter_html = false
+      redcloth.no_span_caps = false
+      redcloth.to_html
+    end
+  end
+
+  class RDoc < AbstractEngine
+    def mask
+      require_dependency 'rdocsupport'
+      RDocSupport::RDocFormatter.new(@content).to_html
+    end
+  end
+
+  MAP = { :textile => Textile, :markdown => Markdown, :mixed => Mixed, :rdoc => RDoc }
+  MAP.default = Textile
+end