Class: BayeuxTextGen

Inherits:
Object
  • Object
show all
Defined in:
lib/bayeux/text_gen.rb

Instance Method Summary collapse

Constructor Details

#initialize(syntax_tree) ⇒ BayeuxTextGen

Default Constructor



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# File 'lib/bayeux/text_gen.rb', line 6

def initialize(syntax_tree)
  @syntax_tree = syntax_tree
  @text_string = String.new
  @text = String.new
end

Instance Method Details

#generate ⇒ Object

Return the AST as an HTML string (stored in @text_string)



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# File 'lib/bayeux/text_gen.rb', line 13

def generate
  
  # Create a walker for the trees in the forest
  walker = TreeWalker.new
  
  walker.on_before_down = self.method(:generate_node_start)
  walker.on_after_up = self.method(:generate_node_end)
  
  walker.on_no_siblings = self.method(:generate_full_node)
  walker.on_no_children = self.method(:generate_full_node)
      
  # Clear the internal HTML representation
  @text_string.clear
  
  # Walk the forest
  @syntax_tree.block_forest.each{|tree|
    walker.walk_tree(tree)
  }

  return @text_string 
end

#generate_full_node(block) ⇒ Object

Output the full contents of the node, properly bracketed as an HTML expression. This is only called if we have no sub-nodes to deal with



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# File 'lib/bayeux/text_gen.rb', line 43

def generate_full_node(block)
  
  # Check if we need to add a space
  # Check if we need to add a space
  if not block.content[0] =~ /\s[:;.,?!]/
    @text_string << " "
  end
              
  case block.type
    
    # Headers
    when :h1, :h2, :h3, :h4, :h5, :h6
      @text_string << "#{block.content.strip}\n"
    
    # Ordinary paragraphs
    when :paragraph
      @text_string << "#{block.content.word_wrap(70)}\n\n"

    when :none
      @text_string << "#{block.content.word_wrap(70)}"
      
    # Special paragraphs
    when :block_quote
      @text_string << "#{block.content.word_wrap(60).indent(5)}\n\n"
    when :single_quote
      @text_string << "\'#{block.content}\'"
    when :double_quote
      @text_string << "\"#{block.content}\""
      
    when :note
      @text_string << "Note: #{block.content}\n\n"
      
    when :command
      @text_string << "#{block.content.strip.indent(5)}\n\n"
      
    when :code_language
      @code_language = block.content
    when :code_start_number
      @code_start_number = block.content  
      
    when :file
      @text_string << "#{block.content}\n\n"
    when :output
      70.downto(0){|index|
        @text_string << "-"
      }        
      @text_string << "\n#{block.content.strip}\n"
      70.downto(0){|index|
        @text_string << "-"
      }
      @text_string << "\n\n"
      
    # Special Characters
    when :em_dash
      @text_string << " - "
    when :en_dash
      @text_string << "-"
    when :elipses
      @text_string << "..."
    when :elipses_stop
      @text_string << "...."
      
    # Links
    when :link_target
      @link_target = block.content
    when :link_text
      @link_text = block.content
      
    # Lists
    when :item
      @text_string << " * #{block.content}"
    
    when :dl_header
      @text_string << "#{block.content}: "
    when :dl_text
      @text_string << "#{block.content}"
            
    # Tags
    when :ac
      # Do we know anything about this acronymn?
      if $reference.acronym_list.include?(block.content) then
        
        # Assemble from the reference list        
        if $reference.acronym_list[block.content].include?('text_text') then
          acronym = $reference.acronym_list[block.content]['text_text']
        else
          acronym = $reference.acronym_list[block.content]['text']
        end
        
        definition = $reference.acronym_list[block.content]['def']
        
        @text_string << "#{acronym}"
      else
        # Do what we can
        @text_string << "#{block.content}"
      end
          
    when :emph 
      @text_string << "#{block.content}"
    
    when :tt
      @text_string << "#{block.content}"
      
  end
end

#generate_node_end(block) ⇒ Object 



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# File 'lib/bayeux/text_gen.rb', line 243

def generate_node_end(block)
      
  case block.type
    
    # Headers
    when :h1, :h2, :h3, :h4, :h5, :h6
      @text_string << @text.word_wrap(70)
      @text = ""
    
    # Ordinary paragraphs
    when :paragraph
      @text_string << @text.indent(2).word_wrap(70) + "\n"
      @text = ""
    
    # Special paragraphs
    when :block_quote
      @text_string << @text.indent(5).word_wrap(60) + "\n"
      @text = ""
    when :single_quote
      @text_string << "'"
    when :double_quote
      @text_string << "\""
      
    when :note
      @text_string << @text.indent(2).word_wrap(70) + "\n"
      @text = ""
      
    # Special Characters
    when :em_dash
      @text << " - "
    when :en_dash
      @text << "-"
    when :elipses
      @text << "..."
    when :elipses_stop
      @text << "...."
      
    # Links
    when :link
      # Assemble the link from the sub-tree nodes
      @text << "#{@link_text}"
    when :link_target
      @link_target = block.content
    when :link_text
      @link_text = block.content
        
    # Lists
    when :item
      @text_string << @text.indent(2).word_wrap(70) + "\n" 
      @text = ""
    
    when :dl
      @text_string << "\n" 
      @text = ""
    when :dl_text
      @text_string << @text.indent(2).word_wrap(70) + "\n" 
      @text = ""
  end
end

#generate_node_start(block) ⇒ Object

Output only the start of a node



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# File 'lib/bayeux/text_gen.rb', line 150

def generate_node_start(block)
  
  # Check if we need to add a space
  if not block.content[0] =~ /\s[:;.,?!]/
    @text << " "
  end
  
  case block.type
    
    # Headers
    when :h1, :h2, :h3, :h4, :h5, :h6
      @text_string << "#{block.content.strip}"
    
    # Ordinary paragraphs
    when :paragraph
      @text << "#{block.content}"
      
    when :none
      @text << "#{block.content}"
      
    # Special paragraphs
    when :block_quote
      @text << "#{block.content}"
    when :single_quote
      @text << "'#{block.content}"
    when :double_quote
      @text << "\"#{block.content}"
      
    when :note
      @text << "Note: #{block.content}"
      
    when :command
      @text_string << "#{block.content.lstrip.indent(5)}\n"
      
    when :code_language
      @code_language = block.content
    when :code_start_number
      @code_start_number = block.content
      
    # Special Characters
    when :em_dash
      @text << " - "
    when :en_dash
      @text << "-"
    when :elipses
      @text << "..."
    when :elipses_stop
      @text << "...."
      
    # Links
    when :link_target
      @link_target = block.content
    when :link_text
      @link_text = block.content
      
    # Lists
    when :item
      @text << " * #{block.content}"
    
    when :dl_header
      @text << "#{block.content}: "
    when :dl_text
      @text << "#{block.content}"
    
    # Tags        
    when :ac
      # Do we know anything about this acronymn?
      if $reference.acronym_list.include?(block.content) then
      
        # Assemble from the reference list        
        if $reference.acronym_list[block.content].include?('text_text') then
          acronym = $reference.acronym_list[block.content]['text_text']
        else
          acronym = $reference.acronym_list[block.content]['text']
        end
      
        definition = $reference.acronym_list[block.content]['def']
      
        @text_string << "#{acronym}"
      else
        # Do what we can
        @text_string << "#{block.content}"
      end
              
    when :emph 
      @text << "#{block.content}"
      
    when :tt
      @text << "#{block.content}"
      
  end
end