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Class: RDoc::Markup::ToAnsi

Relationships & Source Files
Super Chains via Extension / Inclusion / Inheritance
Class Chain:
self, ToRdoc, Formatter
Instance Chain:
self, ToRdoc, Formatter
Inherits: RDoc::Markup::ToRdoc
Defined in: lib/rdoc/markup/to_ansi.rb

Overview

Outputs RDoc markup with vibrant ANSI color!

Class Method Summary

ToRdoc - Inherited

.new

Creates a new formatter that will output (mostly) RDoc markup.

Formatter - Inherited

.gen_relative_url

Converts a target url to one that is relative to a given path.
.new

Creates a new Formatter.

Instance Attribute Summary

ToRdoc - Inherited

#indent

Current indent amount for output in characters.
#width

Output width in characters.
#list_index

Stack of current list indexes for alphabetic and numeric lists.
#list_type

Stack of list types.
#list_width

Stack of list widths for indentation.
#prefix

Prefix for the next list item.
#res

Output accumulator.

Formatter - Inherited

#in_tt?

Are we currently inside tt tags?

Instance Method Summary

ToRdoc - Inherited

#accept_blank_line

Adds blank_line to the output.
#accept_block_quote

Adds paragraph to the output.
#accept_heading

Adds heading to the output.
#accept_indented_paragraph

Adds paragraph to the output.
#accept_list_end

Finishes consumption of list
#accept_list_item_end

Finishes consumption of list_item
#accept_list_item_start

Prepares the visitor for consuming list_item
#accept_list_start

Prepares the visitor for consuming list
#accept_paragraph

Adds paragraph to the output.
#accept_raw

Adds raw to the output.
#accept_rule

Adds rule to the output.
#accept_verbatim

Outputs verbatim indented 2 columns.
#attributes

Applies attribute-specific markup to text using RDoc::AttributeManager
#end_accepting

Returns the generated output.
#handle_special_HARD_BREAK

Adds a newline to the output.
#handle_special_SUPPRESSED_CROSSREF

Removes preceding \ from the suppressed crossref special
#init_tags

Maps attributes to HTML sequences.
#start_accepting

Prepares the visitor for text generation.
#use_prefix

Adds the stored #prefix to the output and clears it.
#wrap

Wraps text to #width

Formatter - Inherited

#accept_document

Adds document to the output.
#add_special_RDOCLINK

Adds a special for links of the form rdoc-…:
#add_special_TIDYLINK

Adds a special for links of the form <text> and <#add_tag

Add a new set of tags for an attribute.
#annotate

Allows tag to be decorated with additional information.
#convert

Marks up content
#convert_flow

Converts flow items flow
#convert_special

Converts added specials.
#convert_string

Converts a string to be fancier if desired.
#ignore

Use ignore in your subclass to ignore the content of a node.
#off_tags

Turns off tags for item on res
#on_tags

Turns on tags for item on res
#parse_url

Extracts and a scheme, url and an anchor id from url and returns them.
#tt?

Is tag a tt tag?

Constructor Details

.new(markup = nil) ⇒ ToAnsi

Creates a new ToAnsi visitor that is ready to output vibrant ANSI color!

[ GitHub ] 

  


# File 'lib/rdoc/markup/to_ansi.rb', line 9



def initialize markup = nil
  super

  @headings.clear
  @headings[1] = ["\e[1;32m", "\e[m"] # bold
  @headings[2] = ["\e[4;32m", "\e[m"] # underline
  @headings[3] = ["\e[32m",   "\e[m"] # just green
end


  







Instance Method Details



  

    #accept_list_item_end(list_item)  
  



  

    

Overrides indent width to ensure output lines up correctly.


  



  [ GitHub ]


  

  


# File 'lib/rdoc/markup/to_ansi.rb', line 30



def accept_list_item_end list_item
  width = case @list_type.last
          when :BULLET then
            2
          when :NOTE, :LABEL then
            if @prefix then
              @res << @prefix.strip
              @prefix = nil
            end

            @res << "\n" unless res.length == 1
            2
          else
            bullet = @list_index.last.to_s
            @list_index[-1] = @list_index.last.succ
            bullet.length + 2
          end

  @indent -= width
end


  








  

    #accept_list_item_start(list_item)  
  



  

    

Adds coloring to note and label list items


  



  [ GitHub ]


  

  


# File 'lib/rdoc/markup/to_ansi.rb', line 54



def accept_list_item_start list_item
  bullet = case @list_type.last
           when :BULLET then
             '*'
           when :NOTE, :LABEL then
             labels = Array(list_item.label).map do |label|
               attributes(label).strip
             end.join "\n"

             labels << ":\n" unless labels.empty?

             labels
           else
             @list_index.last.to_s + '.'
           end

  case @list_type.last
  when :NOTE, :LABEL then
    @indent += 2
    @prefix = bullet + (' ' * @indent)
  else
    @prefix = (' ' * @indent) + bullet.ljust(bullet.length + 1)

    width = bullet.gsub(/\e\[[\d;]*m/, '').length + 1

    @indent += width
  end
end


  








  

    #init_tags  
  



  

    

Maps attributes to ANSI sequences


  



  [ GitHub ]


  

  


# File 'lib/rdoc/markup/to_ansi.rb', line 21



def init_tags
  add_tag :BOLD, "\e[1m", "\e[m"
  add_tag :TT,   "\e[7m", "\e[m"
  add_tag :EM,   "\e[4m", "\e[m"
end


  








  

    #start_accepting  
  



  

    

Starts accepting with a reset screen


  



  [ GitHub ]


  

  


# File 'lib/rdoc/markup/to_ansi.rb', line 86



def start_accepting
  super

  @res = ["\e[0m"]
end