Class: OdtRenderer

Inherits:
Processor show all
Includes:
REXML, Tokenize
Defined in:
lib/notroff/odt_renderer.rb

Constant Summary collapse

LONG_DASH_CODE = 
0xe1.chr + 0x80.chr + 0x93.chr
PARAGRAPH_STYLES = 
{ 
:body => 'FT',
:body2 => 'IT',
:title => 'HA',
:subtitle => 'HB',
:section => 'HC',
:sec => 'HC',
:subsec => 'HD',
:first_code => 'CDT1',
:middle_code => 'CDT',
:end_code => 'CDTX',
:author => 'AU',
:quote => 'Quotation',
:attribution => 'Quotation Attribution',
:single_code => 'C1',
:ltitle => 'LH',
:first_listing => 'LC',
:middle_listing => 'LC2',
:end_listing => 'LX',
:pn => 'PN',
:pt => 'PT',
:cn => 'HA',
:chapter => 'HA',
:ct => 'HB',
:fc => 'FC'}
@@footnote_number = 
1

Instance Method Summary collapse

Methods included from Tokenize

#parse_link, #token_text, #token_type, #tokenize_body_text

Instance Method Details

#add_body_text(text, element) ⇒ Object 



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# File 'lib/notroff/odt_renderer.rb', line 165

def add_body_text( text, element )
  tokens = tokenize_body_text( text )
  tokens.each {|token| add_span( token, element ) }
end

#add_code_text(text, element) ⇒ Object 



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# File 'lib/notroff/odt_renderer.rb', line 170

def add_code_text( text, element )
  text = text.dup
  re = /\S+|\s+/
  until text.empty?
    chunk = text.slice!( re )
    if chunk !~ /^ /
      element.add_text( chunk.string )
    else
      space_element = Element.new( 'text:s' )
      space_element.attributes['text:c'] = chunk.size.to_s
      element.add( space_element )
    end
  end
end

#add_span(token, element) ⇒ Object 



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# File 'lib/notroff/odt_renderer.rb', line 185

def add_span( token, element )
  case token[:type]
  when :italic
    element.add( span_for( token.string, "T1" ))
  when :code
    element.add( span_for( token.string, "CD1" ))
  when :bold
    element.add( span_for( token.string, "T2" ))
  when :normal
    element.add_text( token.string )
  when :footnote
    element.add( footnote_for( token.string ) )
  when :link
    text, url = parse_link(token)
    add_body_text(text, element)
    element.add_text( " (#{url}) " )
  else
    raise "Dont know what to do with #{token}"
  end
end

#bullet_item_style_for(items, i) ⇒ Object 



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# File 'lib/notroff/odt_renderer.rb', line 153

def bullet_item_style_for(items, i)
  return 'List_20_1_20_Start' if i == 0
  return 'List_20_1_20_End' if i == (items.size-1)
  'List_20_1_20_Cont.'
end

#bullet_type?(para) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/notroff/odt_renderer.rb', line 99

def bullet_type?(para)
  group?(para) and para[:kid_type] == :bullet
end

#code_type?(type) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/notroff/odt_renderer.rb', line 103

def code_type?( type )
  [ :first_code, :middle_code, :end_code, :single_code,
    :listing, :first_listing, :middle_listing, :end_listing ].include?(type)
end

#footnote_for(text) ⇒ Object 



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# File 'lib/notroff/odt_renderer.rb', line 234

def footnote_for(text )
  note_element = Element.new( "text:note" )
  note_element.attributes["text:id"] ="ftn#{@@footnote_number}"
  note_element.attributes["text:note-class"] ="footnote"

  cit = Element.new( "text:note-citation" )
  cit.add_text( "#{@@footnote_number}" )
  note_element.add( cit )

  note_body = Element.new( "text:note-body" )
  note_paragraph = Element.new( "text:p" )
  note_paragraph.attributes['text:style-name'] = 'FTN'
  add_body_text(text, note_paragraph)

  note_body.add( note_paragraph )
  note_element.add( note_body )
  @@footnote_number += 1
  note_element
end

#format(para) ⇒ Object 



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# File 'lib/notroff/odt_renderer.rb', line 48

def format( para )
  Logger.log "Format: #{para.inspect}"
  type = para[:type]
  text = para

  return nil if text.empty? and ! code_type?( type )

  result = nil


  if [:body, :body2].include?(type)
    Logger.log("Rendering bodyish para of type ", type )
    result = new_text_element( type )
    add_body_text( text, result )

  elsif quote_type?(para)
    result = new_quote_element(para[:kid_type], para[:kids])

  elsif list_type?(para)
    result = new_list_element(para[:kids])

  elsif bullet_type?(para)
    result = new_bullet_element(para[:kids])

  elsif code_type?(type)
    result = new_text_element( type )
    add_code_text( text, result )

  elsif PARAGRAPH_STYLES[type]
    Logger.log("Rendering simple para of type ", type )
    result = new_text_element( type )
    result.add_text( text.string )

  else
    raise "Dont know what to do with type [#{type}]"
  end
  result
end

#group?(para) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/notroff/odt_renderer.rb', line 87

def group?(para)
  para[:type] == :group
end

#list_type?(para) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/notroff/odt_renderer.rb', line 95

def list_type?(para)
  group?(para) and para[:kid_type] == :list
end

#new_bullet_element(items) ⇒ Object 



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# File 'lib/notroff/odt_renderer.rb', line 139

def new_bullet_element(items)
  list = Element.new('text:list')
  list.attributes['text:style-name'] = 'L1'
  items.each_with_index do |item, i|
    list_item_element = Element.new('text:list-item')
    text_element = Element.new('text:p')
    text_element.attributes['text:style-name'] = bullet_item_style_for(items, i)
    add_body_text(item.string, text_element)
    list_item_element.add(text_element)
    list.add(list_item_element)
  end
  list
end

#new_list_element(items) ⇒ Object 



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# File 'lib/notroff/odt_renderer.rb', line 119

def new_list_element(items)
  list = Element.new('text:list')
  list.attributes['text:style-name'] = 'L2'
  items.each_with_index do |item, i|
    list_item_element = Element.new('text:list-item')
    text_element = Element.new('text:p')
    text_element.attributes['text:style-name'] = numbered_item_style_for(items, i)
    add_body_text(item.string, text_element)
    list_item_element.add(text_element)
    list.add(list_item_element)
  end
  list
end

#new_quote_element(type, items) ⇒ Object 



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# File 'lib/notroff/odt_renderer.rb', line 108

def new_quote_element(type, items)
  p = new_text_element(type)
  items.each_with_index do |item, i|
    p.add( Element.new('text:line-break')) unless i == 0
    el = Element.new('text:span')
    add_body_text(item.string, el)
    p.add(el)
  end
  p
end

#new_text_element(type) ⇒ Object 



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# File 'lib/notroff/odt_renderer.rb', line 159

def new_text_element( type )
  result = Element.new( "text:p" )
  result.attributes["text:style-name"] = PARAGRAPH_STYLES[type]
  result
end

#numbered_item_style_for(items, i) ⇒ Object 



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# File 'lib/notroff/odt_renderer.rb', line 133

def numbered_item_style_for(items, i)
  return 'P7' if i == 0
  return 'P4' if i == (items.size-1)
  'P3'
end

#process(paragraphs) ⇒ Object 



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# File 'lib/notroff/odt_renderer.rb', line 39

def process( paragraphs )
  elements = []
  paragraphs.each do |paragraph|
    new_element = format( paragraph )
    elements << new_element if new_element
  end
  {:body => elements}
end

#quote_type?(para) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/notroff/odt_renderer.rb', line 91

def quote_type?(para)
  group?(para) and [:quote, :attribution].include?(para[:kid_type])
end

#remove_escapes(text) ⇒ Object 



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# File 'lib/notroff/odt_renderer.rb', line 213

def remove_escapes( text )
  text = text.clone

  results = ''

  until text.empty?
    match = /\\(.)/.match( text )
    if match.nil?
      results << text
      text = ''
    else
      unless match.pre_match.empty?
        results << match.pre_match
      end
      results << match[1]
      text = match.post_match
    end
  end
  results
end

#span_for(text, style) ⇒ Object 



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# File 'lib/notroff/odt_renderer.rb', line 206

def span_for( text, style )
  span = Element.new( "text:span" )
  span.attributes['text:style-name'] = style
  span.text = remove_escapes(text)
  span
end