diff options
Diffstat (limited to 'lib/rdoc/markup/to_bs.rb')
-rw-r--r-- | lib/rdoc/markup/to_bs.rb | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/lib/rdoc/markup/to_bs.rb b/lib/rdoc/markup/to_bs.rb new file mode 100644 index 0000000000..e7af129824 --- /dev/null +++ b/lib/rdoc/markup/to_bs.rb @@ -0,0 +1,74 @@ +require 'rdoc/markup/inline' + +## +# Outputs RDoc markup with hot backspace action! You will probably need a +# pager to use this output format. +# +# This formatter won't work on 1.8.6 because it lacks String#chars. + +class RDoc::Markup::ToBs < RDoc::Markup::ToRdoc + + def initialize + super + + @in_b = false + @in_em = false + end + + ## + # Sets a flag that is picked up by #annotate to do the right thing in + # #convert_string + + def init_tags + add_tag :BOLD, '+b', '-b' + add_tag :EM, '+_', '-_' + end + + def accept_heading heading + use_prefix or @res << ' ' * @indent + @res << @headings[heading.level][0] + @in_b = true + @res << attributes(heading.text) + @in_b = false + @res << @headings[heading.level][1] + @res << "\n" + end + + ## + # Turns on or off special handling for +convert_string+ + + def annotate tag + case tag + when '+b' then @in_b = true + when '-b' then @in_b = false + when '+_' then @in_em = true + when '-_' then @in_em = false + end + + '' + end + + ## + # Calls convert_string on the result of convert_special + + def convert_special special + convert_string super + end + + ## + # Adds bold or underline mixed with backspaces + + def convert_string string + return string unless string.respond_to? :chars # your ruby is lame + return string unless @in_b or @in_em + chars = if @in_b then + string.chars.map do |char| "#{char}\b#{char}" end + elsif @in_em then + string.chars.map do |char| "_\b#{char}" end + end + + chars.join + end + +end + |