adding support for rest/restructedtext

config/slideshow.builtin.yml

@@ -26,11 +26,14 @@ filters:
   - dump_content_to_file_debug_text
 
 
-# markup (textile, markdown) config
+# markup (textile, markdown, rest) config
 
 textile:
   extnames: [ .textile, .t ]
 
+rest:  
+  extnames: [ .rst, .rest ]
+
 markdown:
   extnames: [ .markdown, .m, .mark, .mkdn, .md, .txt, .text ]
 

lib/slideshow.rb

@@ -73,14 +73,15 @@ def Slideshow.main
 
 end # module Slideshow
 
-# load built-in (optional) helpers/plugins
+# load built-in (optional) helpers/plugins/engines
 #   If a helper fails to load, simply ingnore it
 #   If you want to use it install missing required gems e.g.:
 #     gem install coderay
 #     gem install ultraviolet etc.
 BUILTIN_OPT_HELPERS = [
   'slideshow/helpers/syntax/uv_helper.rb',
   'slideshow/helpers/syntax/coderay_helper.rb',
+  'slideshow/rest.rb',
 ]
 
 BUILTIN_OPT_HELPERS.each do |helper| 

lib/slideshow/config.rb

@@ -57,6 +57,10 @@ def markdown_post_processing?( lib )
     @hash.fetch( 'user', {} ).fetch( lib, {} ).fetch( 'post-processing', true )
   end
 
+  def known_rest_extnames
+    @hash[ 'builtin' ][ 'rest' ][ 'extnames' ]
+  end
+
   def known_textile_extnames
     # returns an array of known file extensions e.g.
     # [ '.textile', '.t' ]
@@ -86,7 +90,7 @@ def known_extnames
     # ruby check: is it better self. ?? or more confusing
     #  possible conflict only with write access (e.g. prop=) 
 
-    known_textile_extnames + known_markdown_extnames
+    known_textile_extnames + known_markdown_extnames + known_rest_extnames
   end
 
   def text_filters

lib/slideshow/gen.rb

@@ -56,6 +56,8 @@ def text_to_html( content )
         markdown_to_html( content )
       when :textile
         textile_to_html( content )
+      when :rest
+        rest_to_html( content )
     end
     content
   end
@@ -93,10 +95,12 @@ def wrap_markup( text )
     end
   end
 
+  # todo/fix: move to Config class  
   def cache_dir
     RUBY_PLATFORM =~ /win32/ ? win32_cache_dir : File.join(File.expand_path("~"), ".slideshow")
   end
 
+  # todo/fix: move to Config class  
   def win32_cache_dir
     unless ENV['HOMEDRIVE'] && ENV['HOMEPATH'] && File.exists?(home = ENV['HOMEDRIVE'] + ENV['HOMEPATH'])
       puts "No HOMEDRIVE or HOMEPATH environment variable.  Set one to save a" +
@@ -107,6 +111,7 @@ def win32_cache_dir
     end
   end
 
+  # todo/fix: move to Config class    
   def config_dir
     unless @config_dir  # first time? calculate config_dir value to "cache"
 
@@ -430,7 +435,7 @@ def post_processing_slides( content )
 
     # 1) add slide break  
 
-    if @markup_type == :markdown && @markdown_libs.first == 'pandoc-ruby'
+    if (@markup_type == :markdown && @markdown_libs.first == 'pandoc-ruby') || @markup_type == :rest
       content = add_slide_directive_before_div_h1( content )
     else
       content = add_slide_directive_before_h1( content )
@@ -579,6 +584,8 @@ def create_slideshow( fn )
 
   if config.known_markdown_extnames.include?( extname )
     @markup_type = :markdown
+  elsif config.known_rest_extnames.include?( extname )
+    @markup_type = :rest
   else
     @markup_type = :textile
   end

lib/slideshow/rest.rb

@@ -0,0 +1,17 @@
+require 'pandoc-ruby'
+
+module Slideshow
+  module RestEngines  # reStructuredText
+
+  def rest_to_html( content )
+    puts "  Converting reStructuredText (#{content.length} bytes) to HTML..."
+
+    content = PandocRuby.new( content, :from => :rst, :to => :html ).convert
+  end
+
+end   # module RestEngines
+end # module Slideshow
+
+class Slideshow::Gen
+  include Slideshow::RestEngines
+end