Import RDoc r101.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@18121 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

lib/rdoc/markup/to_texinfo.rb

@@ -0,0 +1,69 @@
+require 'rdoc/markup/formatter'
+require 'rdoc/markup/fragments'
+require 'rdoc/markup/inline'
+
+require 'rdoc/markup'
+require 'rdoc/markup/formatter'
+
+##
+# Convert SimpleMarkup to basic TexInfo format
+#
+# TODO: WTF is AttributeManager for?
+#
+class RDoc::Markup::ToTexInfo < RDoc::Markup::Formatter
+
+  def start_accepting
+    @text = []
+  end
+
+  def end_accepting
+    @text.join("\n")
+  end
+
+  def accept_paragraph(attributes, text)
+    @text << format(text)
+  end
+
+  def accept_verbatim(attributes, text)
+    @text << "@verb{|#{format(text)}|}"
+  end
+
+  def accept_heading(attributes, text)
+    heading = ['@majorheading', '@chapheading'][text.head_level - 1] || '@heading'
+    @text << "#{heading}{#{format(text)}}"
+  end
+
+  def accept_list_start(attributes, text)
+    @text << '@itemize @bullet'
+  end
+
+  def accept_list_end(attributes, text)
+    @text << '@end itemize'
+  end
+
+  def accept_list_item(attributes, text)
+    @text << "@item\n#{format(text)}"
+  end
+
+  def accept_blank_line(attributes, text)
+    @text << "\n"
+  end
+
+  def accept_rule(attributes, text)
+    @text << '-----'
+  end
+
+  def format(text)
+    text.txt.
+      gsub(/@/, "@@").
+      gsub(/\{/, "@{").
+      gsub(/\}/, "@}").
+      # gsub(/,/, "@,"). # technically only required in cross-refs
+      gsub(/\+([\w]+)\+/, "@code{\\1}").
+      gsub(/\<tt\>([^<]+)\<\/tt\>/, "@code{\\1}").
+      gsub(/\*([\w]+)\*/, "@strong{\\1}").
+      gsub(/\<b\>([^<]+)\<\/b\>/, "@strong{\\1}").
+      gsub(/_([\w]+)_/, "@emph{\\1}").
+      gsub(/\<em\>([^<]+)\<\/em\>/, "@emph{\\1}")
+  end
+end