Module: Infoboxer::Parser::Table

Includes:
Tree
Included in:
Paragraphs
Defined in:
lib/infoboxer/parser/table.rb

Overview

http://en.wikipedia.org/wiki/Help:Table

Instance Method Summary collapse

Instance Method Details

#table ⇒ Object 



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# File 'lib/infoboxer/parser/table.rb', line 9

def table
  @context.current =~ /^\s*{\|/ or
    @context.fail!('Something went wrong: trying to parse not a table')

  log 'Starting to parse table'

  prms = table_params
  log "Table params found #{prms}"
  table = Tree::Table.new(Nodes[], **prms)

  @context.next!

  guarded_loop do
    table_next_line(table) or break
    log 'Next table row'
    @context.next!
  end

  # FIXME: not the most elegant way, huh?
  table.children.reject! { |r| r.children.empty? }

  table
end

#table_caption(table) ⇒ Object 



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# File 'lib/infoboxer/parser/table.rb', line 71

def table_caption(table)
  log 'Table caption found'
  @context.skip(/^\s*\|\+\s*/)

  params = if @context.check(/[^|{\[]+\|([^|]|$)/)
             parse_params(@context.scan_until(/\|/))
           else
             {}
           end

  children = inline(/^\s*([|!]|{\|)/)
  if @context.matched
    @context.unscan_matched!
    @context.prev! # compensate next! which will be done in table()
  end
  table.push_children(TableCaption.new(children.strip, **params))
end

#table_cell_cont(table) ⇒ Object

Good news, everyone! Table can be IMPLICITLY closed when it's not "cell" context.

Unless it's empty row, which is just skipped.



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# File 'lib/infoboxer/parser/table.rb', line 127

def table_cell_cont(table)
  container = case (last = table.children.last)
              when TableRow
                last.children.last
              when TableCaption
                last
              else
                nil
              end

  unless container
    # return "table not continued" unless row is empty
    return true if @context.current.empty?

    @context.prev!
    return false
  end

  container.push_children(paragraph(/^\s*([|!]|{\|)/))
  table.push_children(container) unless container.parent
  true
end

#table_cells(table, cell_class = TableCell) ⇒ Object 



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# File 'lib/infoboxer/parser/table.rb', line 89

def table_cells(table, cell_class = TableCell)
  log 'Table cells found'
  table.push_children(TableRow.new) unless table.children.last.is_a?(TableRow)
  row = table.children.last

  @context.skip(/\s*[!|]\s*/)
  guarded_loop do
    params = if @context.check(/[^|{\[]+\|([^|]|$)/)
               parse_params(@context.scan_until(/\|/))
             else
               {}
             end
    content = short_inline(/(\|\||!!)/)
    row.push_children(cell_class.new(content, **params))
    break if @context.eol?
  end
end

#table_next_line(table) ⇒ Object 



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# File 'lib/infoboxer/parser/table.rb', line 38

def table_next_line(table)
  case @context.current
  when /^\s*\|}(.*)$/                 # table end
    @context.scan(/^\s*\|}/)
    return false
  when /^\s*!/                        # heading (th) in a row
    table_cells(table, TableHeading)
  when /^\s*\|\+/                     # caption
    table_caption(table)
  when /^\s*\|-(.*)$/                 # row start
    table_row(table, Regexp.last_match(1))

  when /^\s*\|/                       # cell in row
    table_cells(table)
  when /^\s*{{/                       # template can be at row level
    table_template(table)
  when nil
    return false
  when /^(?<level>={2,})\s*(?<text>.+?)\s*\k<level>$/ # heading implicitly closes the table
    @context.prev!
    return false
  else
    return table_cell_cont(table)
  end

  true # should continue parsing
end

#table_params ⇒ Object 



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# File 'lib/infoboxer/parser/table.rb', line 33

def table_params
  @context.skip(/\s*{\|/)
  parse_params(@context.rest)
end

#table_row(table, param_str) ⇒ Object 



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# File 'lib/infoboxer/parser/table.rb', line 66

def table_row(table, param_str)
  log 'Table row found'
  table.push_children(TableRow.new(Nodes[], **parse_params(param_str)))
end

#table_template(table) ⇒ Object 



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# File 'lib/infoboxer/parser/table.rb', line 107

def table_template(table)
  contents = paragraph(/^\s*([|!]|{\|)/).to_templates?

  # Note: in fact, without full template parsing, we CAN'T know what level to insert it:
  # Template can be something like <tr><td>Foo</td></tr>
  # But for consistency, we insert all templates inside the <td>, forcing this <td>
  # to exist.

  table.push_children(TableRow.new) unless table.children.last.is_a?(TableRow)
  row = table.children.last
  row.push_children(TableCell.new) unless row.children.last.is_a?(BaseCell)
  cell = row.children.last

  cell.push_children(*contents)
end