Class: Asciidoctor::Converter::ManPageConverter

Inherits:
Base
  • Object
show all
Defined in:
lib/asciidoctor/converter/manpage.rb

Overview

See www.gnu.org/software/groff/manual/html_node/Man-usage.html#Man-usage

Constant Summary collapse

WHITESPACE = 
%(#{LF}#{TAB} )
ET = 
' ' * 8
ESC =

troff leader marker

?\u001b
ESC_BS =

escaped backslash (indicates troff formatting sequence)

%(#{ESC}\\)
ESC_FS =

escaped full stop (indicates troff macro)

%(#{ESC}.)
LiteralBackslashRx = 
/\A\\|(#{ESC})?\\/
LeadingPeriodRx = 
/^\./
EscapedMacroRx = 
/^(?:#{ESC}\\c\n)?#{ESC}\.((?:URL|MTO) "#{CC_ANY}*?" "#{CC_ANY}*?" )( |[^\s]*)(#{CC_ANY}*?)(?: *#{ESC}\\c)?$/
MalformedEscapedMacroRx = 
/(#{ESC}\\c) (#{ESC}\.(?:URL|MTO) )/
MockMacroRx = 
%r(</?(#{ESC}\\[^>]+)>)
EmDashCharRefRx = 
/&#8212;(?:&#8203;)?/
EllipsisCharRefRx = 
/&#8230;(?:&#8203;)?/
WrappedIndentRx = 
/#{CG_BLANK}*#{LF}#{CG_BLANK}*/
XMLMarkupRx = 
/&#?[a-z\d]+;|</
PCDATAFilterRx = 
%r((&#?[a-z\d]+;|<#{ESC}\\f\(CR.*?</#{ESC}\\fP>|<[^>]+>)|([^&<]+))

Constants included from DefaultFactory

DefaultFactory::PROVIDED

Instance Attribute Summary

Attributes included from Asciidoctor::Converter

#backend

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Base

#content_only, #convert, #handles?, #skip

Methods included from Asciidoctor::Converter

#convert, derive_backend_traits, #handles?

Methods included from DefaultFactory

#for, #register, #unregister_all

Methods included from Factory

#converters, #create, create, default, #for, new, #register

Methods included from Logging

#logger, #message_with_context

Constructor Details

#initialize(backend, opts = {}) ⇒ ManPageConverter

Returns a new instance of ManPageConverter.



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# File 'lib/asciidoctor/converter/manpage.rb', line 33

def initialize backend, opts = {}
  @backend = backend
  init_backend_traits basebackend: 'manpage', filetype: 'man', outfilesuffix: '.man', supports_templates: true
end

Class Method Details

.write_alternate_pages(mannames, manvolnum, target) ⇒ Object 



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# File 'lib/asciidoctor/converter/manpage.rb', line 666

def self.write_alternate_pages mannames, manvolnum, target
  return unless mannames && mannames.size > 1
  mannames.shift
  manvolext = %(.#{manvolnum})
  dir, basename = ::File.split target
  mannames.each do |manname|
    ::File.write ::File.join(dir, %(#{manname}#{manvolext})), %(.so #{basename}), mode: FILE_WRITE_MODE
  end
end

Instance Method Details

#convert_admonition(node) ⇒ Object 



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# File 'lib/asciidoctor/converter/manpage.rb', line 153

def convert_admonition node
  result = []
  result << %(.if n .sp
.RS 4
.it 1 an-trap
.nr an-no-space-flag 1
.nr an-break-flag 1
.br
.ps +1
.B #{node.attr 'textlabel'}#{node.title? ? "\\fP: #{manify node.title}" : ''}
.ps -1
.br
#{enclose_content node}
.sp .5v
.RE)
  result.join LF
end

#convert_colist(node) ⇒ Object 



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# File 'lib/asciidoctor/converter/manpage.rb', line 171

def convert_colist node
  result = []
  result << %(.sp
.B #{manify node.title}
.br) if node.title?
  result << '.TS
tab(:);
r lw(\n(.lu*75u/100u).'

  num = 0
  node.items.each do |item|
    result << %(\\fB(#{num += 1})\\fP\\h'-2n':T{)
    result << (manify item.text, whitespace: :normalize)
    result << item.content if item.blocks?
    result << 'T}'
  end
  result << '.TE'
  result.join LF
end

#convert_dlist(node) ⇒ Object

TODO implement horizontal (if it makes sense)



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# File 'lib/asciidoctor/converter/manpage.rb', line 192

def convert_dlist node
  result = []
  result << %(.sp
.B #{manify node.title}
.br) if node.title?
  counter = 0
  node.items.each do |terms, dd|
    counter += 1
    case node.style
    when 'qanda'
      result << %(.sp
#{counter}. #{manify terms.map {|dt| dt.text }.join ' '}
.RS 4)
    else
      result << %(.sp
#{manify terms.map {|dt| dt.text }.join(', '), whitespace: :normalize}
.RS 4)
    end
    if dd
      result << (manify dd.text, whitespace: :normalize) if dd.text?
      result << dd.content if dd.blocks?
    end
    result << '.RE'
  end
  result.join LF
end

#convert_document(node) ⇒ Object 



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# File 'lib/asciidoctor/converter/manpage.rb', line 38

def convert_document node
  unless node.attr? 'mantitle'
    raise 'asciidoctor: ERROR: doctype must be set to manpage when using manpage backend'
  end
  mantitle = (node.attr 'mantitle').gsub InvalidSectionIdCharsRx, ''
  manvolnum = node.attr 'manvolnum', '1'
  manname = node.attr 'manname', mantitle
  manmanual = node.attr 'manmanual'
  mansource = node.attr 'mansource'
  docdate = (node.attr? 'reproducible') ? nil : (node.attr 'docdate')
  # NOTE the first line enables the table (tbl) preprocessor, necessary for non-Linux systems
  result = [%('\\" t
.\\"     Title: #{mantitle}
.\\"    Author: #{(node.attr? 'authors') ? (node.attr 'authors') : '[see the "AUTHOR(S)" section]'}
.\\" Generator: Asciidoctor #{node.attr 'asciidoctor-version'})]
  result << %(.\\"      Date: #{docdate}) if docdate
  result << %(.\\"    Manual: #{manmanual ? (manmanual.tr_s WHITESPACE, ' ') : '\ \&'}
.\\"    Source: #{mansource ? (mansource.tr_s WHITESPACE, ' ') : '\ \&'}
.\\"  Language: English
.\\")
  # TODO add document-level setting to disable capitalization of manname
  result << %(.TH "#{manify manname.upcase}" "#{manvolnum}" "#{docdate}" "#{mansource ? (manify mansource) : '\ \&'}" "#{manmanual ? (manify manmanual) : '\ \&'}")
  # define portability settings
  # see http://bugs.debian.org/507673
  # see http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html
  result << '.ie \n(.g .ds Aq \(aq'
  result << '.el       .ds Aq \''
  # set sentence_space_size to 0 to prevent extra space between sentences separated by a newline
  # the alternative is to add \& at the end of the line
  result << '.ss \n[.ss] 0'
  # disable hyphenation
  result << '.nh'
  # disable justification (adjust text to left margin only)
  result << '.ad l'
  # define URL macro for portability
  # see http://web.archive.org/web/20060102165607/http://people.debian.org/~branden/talks/wtfm/wtfm.pdf
  #
  # Usage
  #
  # .URL "http://www.debian.org" "Debian" "."
  #
  # * First argument: the URL
  # * Second argument: text to be hyperlinked
  # * Third (optional) argument: text that needs to immediately trail the hyperlink without intervening whitespace
  result << '.de URL
\\fI\\\\$2\\fP <\\\\$1>\\\\$3
..
.als MTO URL
.if \n[.g] \{\
.  mso www.tmac
.  am URL
.    ad l
.  .
.  am MTO
.    ad l
.  .'
  result << %(.  LINKSTYLE #{node.attr 'man-linkstyle', 'blue R < >'})
  result << '.\}'

  unless node.noheader
    if node.attr? 'manpurpose'
      mannames = node.attr 'mannames', [manname]
      result << %(.SH "#{(node.attr 'manname-title', 'NAME').upcase}"
#{mannames.map {|n| (manify n).gsub '\-', '-' }.join ', '} \\- #{manify node.attr('manpurpose'), whitespace: :normalize})
    end
  end

  result << node.content

  # QUESTION should NOTES come after AUTHOR(S)?
  append_footnotes result, node

  unless (authors = node.authors).empty?
    if authors.size > 1
      result << '.SH "AUTHORS"'
      authors.each do |author|
        result << %(.sp
#{author.name})
      end
    else
      result << %(.SH "AUTHOR"
.sp
#{authors[0].name})
    end
  end

  result.join LF
end

#convert_embedded(node) ⇒ Object

NOTE embedded doesn’t really make sense in the manpage backend



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# File 'lib/asciidoctor/converter/manpage.rb', line 128

def convert_embedded node
  result = [node.content]

  append_footnotes result, node

  # QUESTION should we add an AUTHOR(S) section?

  result.join LF
end

#convert_example(node) ⇒ Object 



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# File 'lib/asciidoctor/converter/manpage.rb', line 219

def convert_example node
  result = []
  result << (node.title? ? %(.sp
.B #{manify node.captioned_title}
.br) : '.sp')
  result << %(.RS 4
#{enclose_content node}
.RE)
  result.join LF
end

#convert_floating_title(node) ⇒ Object 



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# File 'lib/asciidoctor/converter/manpage.rb', line 230

def convert_floating_title node
  %(.SS "#{manify node.title}")
end

#convert_image(node) ⇒ Object 



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# File 'lib/asciidoctor/converter/manpage.rb', line 234

def convert_image node
  result = []
  result << (node.title? ? %(.sp
.B #{manify node.captioned_title}
.br) : '.sp')
  result << %([#{manify node.alt}])
  result.join LF
end

#convert_inline_anchor(node) ⇒ Object 



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# File 'lib/asciidoctor/converter/manpage.rb', line 563

def convert_inline_anchor node
  target = node.target
  case node.type
  when :link
    if target.start_with? 'mailto:'
      macro = 'MTO'
      target = target.slice 7, target.length
    else
      macro = 'URL'
    end
    if (text = node.text) == target
      text = ''
    else
      text = text.gsub '"', %[#{ESC_BS}(dq]
    end
    target = target.sub '@', %[#{ESC_BS}(at] if macro == 'MTO'
    %(#{ESC_BS}c#{LF}#{ESC_FS}#{macro} "#{target}" "#{text}" )
  when :xref
    unless (text = node.text)
      if AbstractNode === (ref = (@refs ||= node.document.catalog[:refs])[refid = node.attributes['refid']] || (refid.nil_or_empty? ? (top = get_root_document node) : nil))
        if (@resolving_xref ||= (outer = true)) && outer && (text = ref.xreftext node.attr 'xrefstyle', nil, true)
          text = uppercase_pcdata text if ref.context === :section && ref.level < 2 && text == ref.title
        else
          text = top ? '[^top]' : %([#{refid}])
        end
        @resolving_xref = nil if outer
      else
        text = %([#{refid}])
      end
    end
    text
  when :ref, :bibref
    # These are anchor points, which shouldn't be visible
    ''
  else
    logger.warn %(unknown anchor type: #{node.type.inspect})
    nil
  end
end

#convert_inline_break(node) ⇒ Object 



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# File 'lib/asciidoctor/converter/manpage.rb', line 603

def convert_inline_break node
  %(#{node.text}#{LF}#{ESC_FS}br)
end

#convert_inline_button(node) ⇒ Object 



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# File 'lib/asciidoctor/converter/manpage.rb', line 607

def convert_inline_button node
  %(<#{ESC_BS}fB>[#{ESC_BS}0#{node.text}#{ESC_BS}0]</#{ESC_BS}fP>)
end

#convert_inline_callout(node) ⇒ Object 



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# File 'lib/asciidoctor/converter/manpage.rb', line 611

def convert_inline_callout node
  %(<#{ESC_BS}fB>(#{node.text})<#{ESC_BS}fP>)
end

#convert_inline_footnote(node) ⇒ Object 



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# File 'lib/asciidoctor/converter/manpage.rb', line 615

def convert_inline_footnote node
  if (index = node.attr 'index')
    %([#{index}])
  elsif node.type == :xref
    %([#{node.text}])
  end
end

#convert_inline_image(node) ⇒ Object 



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# File 'lib/asciidoctor/converter/manpage.rb', line 623

def convert_inline_image node
  (node.attr? 'link') ? %([#{node.alt}] <#{node.attr 'link'}>) : %([#{node.alt}])
end

#convert_inline_indexterm(node) ⇒ Object 



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# File 'lib/asciidoctor/converter/manpage.rb', line 627

def convert_inline_indexterm node
  node.type == :visible ? node.text : ''
end

#convert_inline_kbd(node) ⇒ Object 



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# File 'lib/asciidoctor/converter/manpage.rb', line 631

def convert_inline_kbd node
  %[<#{ESC_BS}f(CR>#{(keys = node.attr 'keys').size == 1 ? keys[0] : (keys.join "#{ESC_BS}0+#{ESC_BS}0")}</#{ESC_BS}fP>]
end

#convert_inline_menu(node) ⇒ Object 



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# File 'lib/asciidoctor/converter/manpage.rb', line 635

def convert_inline_menu node
  caret = %[#{ESC_BS}0#{ESC_BS}(fc#{ESC_BS}0]
  menu = node.attr 'menu'
  if !(submenus = node.attr 'submenus').empty?
    submenu_path = submenus.map {|item| %(<#{ESC_BS}fI>#{item}</#{ESC_BS}fP>) }.join caret
    %(<#{ESC_BS}fI>#{menu}</#{ESC_BS}fP>#{caret}#{submenu_path}#{caret}<#{ESC_BS}fI>#{node.attr 'menuitem'}</#{ESC_BS}fP>)
  elsif (menuitem = node.attr 'menuitem')
    %(<#{ESC_BS}fI>#{menu}#{caret}#{menuitem}</#{ESC_BS}fP>)
  else
    %(<#{ESC_BS}fI>#{menu}</#{ESC_BS}fP>)
  end
end

#convert_inline_quoted(node) ⇒ Object

NOTE use fake XML elements to prevent creating artificial word boundaries



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# File 'lib/asciidoctor/converter/manpage.rb', line 649

def convert_inline_quoted node
  case node.type
  when :emphasis
    %(<#{ESC_BS}fI>#{node.text}</#{ESC_BS}fP>)
  when :strong
    %(<#{ESC_BS}fB>#{node.text}</#{ESC_BS}fP>)
  when :monospaced
    %[<#{ESC_BS}f(CR>#{node.text}</#{ESC_BS}fP>]
  when :single
    %[<#{ESC_BS}(oq>#{node.text}</#{ESC_BS}(cq>]
  when :double
    %[<#{ESC_BS}(lq>#{node.text}</#{ESC_BS}(rq>]
  else
    node.text
  end
end

#convert_listing(node) ⇒ Object 



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# File 'lib/asciidoctor/converter/manpage.rb', line 243

def convert_listing node
  result = []
  result << %(.sp
.B #{manify node.captioned_title}
.br) if node.title?
  result << %(.sp
.if n .RS 4
.nf
.fam C
#{manify node.content, whitespace: :preserve}
.fam
.fi
.if n .RE)
  result.join LF
end

#convert_literal(node) ⇒ Object 



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# File 'lib/asciidoctor/converter/manpage.rb', line 259

def convert_literal node
  result = []
  result << %(.sp
.B #{manify node.title}
.br) if node.title?
  result << %(.sp
.if n .RS 4
.nf
.fam C
#{manify node.content, whitespace: :preserve}
.fam
.fi
.if n .RE)
  result.join LF
end

#convert_olist(node) ⇒ Object 



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# File 'lib/asciidoctor/converter/manpage.rb', line 286

def convert_olist node
  result = []
  result << %(.sp
.B #{manify node.title}
.br) if node.title?

  start = (node.attr 'start', 1).to_i
  node.items.each_with_index do |item, idx|
    result << %(.sp
.RS 4
.ie n \\{\\
\\h'-04' #{numeral = idx + start}.\\h'+01'\\c
.\\}
.el \\{\\
.  sp -1
.  IP " #{numeral}." 4.2
.\\}
#{manify item.text, whitespace: :normalize})
    result << item.content if item.blocks?
    result << '.RE'
  end
  result.join LF
end

#convert_open(node) ⇒ Object 



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# File 'lib/asciidoctor/converter/manpage.rb', line 310

def convert_open node
  case node.style
  when 'abstract', 'partintro'
    enclose_content node
  else
    node.content
  end
end

#convert_page_break(node) ⇒ Object 



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# File 'lib/asciidoctor/converter/manpage.rb', line 319

def convert_page_break node
  '.bp'
end

#convert_paragraph(node) ⇒ Object 



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# File 'lib/asciidoctor/converter/manpage.rb', line 323

def convert_paragraph node
  if node.title?
    %(.sp
.B #{manify node.title}
.br
#{manify node.content, whitespace: :normalize})
  else
    %(.sp
#{manify node.content, whitespace: :normalize})
  end
end

#convert_quote(node) ⇒ Object 



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# File 'lib/asciidoctor/converter/manpage.rb', line 338

def convert_quote node
  result = []
  if node.title?
    result << %(.sp
.RS 3
.B #{manify node.title}
.br
.RE)
  end
  attribution_line = (node.attr? 'citetitle') ? %(#{node.attr 'citetitle'} ) : nil
  attribution_line = (node.attr? 'attribution') ? %[#{attribution_line}\\(em #{node.attr 'attribution'}] : nil
  result << %(.RS 3
.ll -.6i
#{enclose_content node}
.br
.RE
.ll)
  if attribution_line
    result << %(.RS 5
.ll -.10i
#{attribution_line}
.RE
.ll)
  end
  result.join LF
end

#convert_section(node) ⇒ Object 



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# File 'lib/asciidoctor/converter/manpage.rb', line 138

def convert_section node
  result = []
  if node.level > 1
    macro = 'SS'
    # QUESTION why captioned title? why not when level == 1?
    stitle = node.captioned_title
  else
    macro = 'SH'
    stitle = uppercase_pcdata node.title
  end
  result << %(.#{macro} "#{manify stitle}"
#{node.content})
  result.join LF
end

#convert_sidebar(node) ⇒ Object 



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# File 'lib/asciidoctor/converter/manpage.rb', line 275

def convert_sidebar node
  result = []
  result << (node.title? ? %(.sp
.B #{manify node.title}
.br) : '.sp')
  result << %(.RS 4
#{enclose_content node}
.RE)
  result.join LF
end

#convert_stem(node) ⇒ Object 



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# File 'lib/asciidoctor/converter/manpage.rb', line 365

def convert_stem node
  result = []
  result << (node.title? ? %(.sp
.B #{manify node.title}
.br) : '.sp')
  open, close = BLOCK_MATH_DELIMITERS[node.style.to_sym]
  if ((equation = node.content).start_with? open) && (equation.end_with? close)
    equation = equation.slice open.length, equation.length - open.length - close.length
  end
  result << %(#{manify equation, whitespace: :preserve} (#{node.style}))
  result.join LF
end

#convert_table(node) ⇒ Object

FIXME: The reason this method is so complicated is because we are not receiving empty(marked) cells when there are colspans or rowspans. This method has to create a map of all cells and in the case of rowspans create empty cells as placeholders of the span. To fix this, asciidoctor needs to provide an API to tell the user if a given cell is being used as a colspan or rowspan.



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# File 'lib/asciidoctor/converter/manpage.rb', line 384

def convert_table node
  result = []
  if node.title?
    result << %(.sp
.it 1 an-trap
.nr an-no-space-flag 1
.nr an-break-flag 1
.br
.B #{manify node.captioned_title}
)
  end
  result << '.TS
allbox tab(:);'
  row_header = []
  row_text = []
  row_index = 0
  node.rows.to_h.each do |tsec, rows|
    rows.each do |row|
      row_header[row_index] ||= []
      row_text[row_index] ||= []
      # result << LF
      # l left-adjusted
      # r right-adjusted
      # c centered-adjusted
      # n numerical align
      # a alphabetic align
      # s spanned
      # ^ vertically spanned
      remaining_cells = row.size
      row.each_with_index do |cell, cell_index|
        remaining_cells -= 1
        row_header[row_index][cell_index] ||= []
        # Add an empty cell if this is a rowspan cell
        if row_header[row_index][cell_index] == ['^t']
          row_text[row_index] << %(T{#{LF}.sp#{LF}T}:)
        end
        row_text[row_index] << %(T{#{LF}.sp#{LF})
        cell_halign = (cell.attr 'halign', 'left').chr
        if tsec == :body
          if row_header[row_index].empty? || row_header[row_index][cell_index].empty?
            row_header[row_index][cell_index] << %(#{cell_halign}t)
          else
            row_header[row_index][cell_index + 1] ||= []
            row_header[row_index][cell_index + 1] << %(#{cell_halign}t)
          end
          case cell.style
          when :asciidoc
            cell_content = cell.content
          when :literal
            cell_content = %(.nf#{LF}#{manify cell.text, whitespace: :preserve}#{LF}.fi)
          else
            cell_content = manify cell.content.join, whitespace: :normalize
          end
          row_text[row_index] << %(#{cell_content}#{LF})
        else # tsec == :head || tsec == :foot
          if row_header[row_index].empty? || row_header[row_index][cell_index].empty?
            row_header[row_index][cell_index] << %(#{cell_halign}tB)
          else
            row_header[row_index][cell_index + 1] ||= []
            row_header[row_index][cell_index + 1] << %(#{cell_halign}tB)
          end
          row_text[row_index] << %(#{manify cell.text, whitespace: :normalize}#{LF})
        end
        if cell.colspan && cell.colspan > 1
          (cell.colspan - 1).times do |i|
            if row_header[row_index].empty? || row_header[row_index][cell_index].empty?
              row_header[row_index][cell_index + i] << 'st'
            else
              row_header[row_index][cell_index + 1 + i] ||= []
              row_header[row_index][cell_index + 1 + i] << 'st'
            end
          end
        end
        if cell.rowspan && cell.rowspan > 1
          (cell.rowspan - 1).times do |i|
            row_header[row_index + 1 + i] ||= []
            if row_header[row_index + 1 + i].empty? || row_header[row_index + 1 + i][cell_index].empty?
              row_header[row_index + 1 + i][cell_index] ||= []
              row_header[row_index + 1 + i][cell_index] << '^t'
            else
              row_header[row_index + 1 + i][cell_index + 1] ||= []
              row_header[row_index + 1 + i][cell_index + 1] << '^t'
            end
          end
        end
        if remaining_cells >= 1
          row_text[row_index] << 'T}:'
        else
          row_text[row_index] << %(T}#{LF})
        end
      end
      row_index += 1
    end unless rows.empty?
  end

  #row_header.each do |row|
  #  result << LF
  #  row.each_with_index do |cell, i|
  #    result << (cell.join ' ')
  #    result << ' ' if row.size > i + 1
  #  end
  #end
  # FIXME temporary fix to get basic table to display
  result << LF
  result << ('lt ' * row_header[0].size).chop

  result << %(.#{LF})
  row_text.each do |row|
    result << row.join
  end
  result << %(.TE#{LF}.sp)
  result.join
end

#convert_thematic_break(node) ⇒ Object 



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# File 'lib/asciidoctor/converter/manpage.rb', line 498

def convert_thematic_break node
  '.sp
.ce
\l\'\n(.lu*25u/100u\(ap\''
end

#convert_ulist(node) ⇒ Object 



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# File 'lib/asciidoctor/converter/manpage.rb', line 506

def convert_ulist node
  result = []
  result << %(.sp
.B #{manify node.title}
.br) if node.title?
  node.items.map do |item|
    result << %[.sp
.RS 4
.ie n \\{\\
\\h'-04'\\(bu\\h'+03'\\c
.\\}
.el \\{\\
.  sp -1
.  IP \\(bu 2.3
.\\}
#{manify item.text, whitespace: :normalize}]
    result << item.content if item.blocks?
    result << '.RE'
  end
  result.join LF
end

#convert_verse(node) ⇒ Object 



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# File 'lib/asciidoctor/converter/manpage.rb', line 528

def convert_verse node
  result = []
  if node.title?
    result << %(.sp
.B #{manify node.title}
.br)
  end
  attribution_line = (node.attr? 'citetitle') ? %(#{node.attr 'citetitle'} ) : nil
  attribution_line = (node.attr? 'attribution') ? %[#{attribution_line}\\(em #{node.attr 'attribution'}] : nil
  result << %(.sp
.nf
#{manify node.content, whitespace: :preserve}
.fi
.br)
  if attribution_line
    result << %(.in +.5i
.ll -.5i
#{attribution_line}
.in
.ll)
  end
  result.join LF
end

#convert_video(node) ⇒ Object 



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# File 'lib/asciidoctor/converter/manpage.rb', line 552

def convert_video node
  start_param = (node.attr? 'start') ? %(&start=#{node.attr 'start'}) : ''
  end_param = (node.attr? 'end') ? %(&end=#{node.attr 'end'}) : ''
  result = []
  result << (node.title? ? %(.sp
.B #{manify node.title}
.br) : '.sp')
  result << %(<#{node.media_uri(node.attr 'target')}#{start_param}#{end_param}> (video))
  result.join LF
end