Class: Jekyll::Spaceship::TableProcessor

Inherits:
Processor
  • Object
show all
Defined in:
lib/jekyll-spaceship/processors/table-processor.rb

Constant Summary collapse

ATTR_LIST_PATTERN = 
/((?<!\\)\{:(?:([A-Za-z]\S*):)?(.*?)(?<!\\)\})/
ATTR_LIST_REFS = 
{}

Constants inherited from Processor

Processor::DEFAULT_PRIORITY, Processor::PRIORITY_MAP

Instance Attribute Summary

Attributes inherited from Processor

#config, #exclusions, #handled, #logger, #page, #priority, #registers

Instance Method Summary collapse

Methods inherited from Processor

#after_exclude, config, #converter, #dispatch, escape_html, exclude, #ext, fetch_img_data, #filename, #initialize, #initialize_exclusions, #initialize_priority, #initialize_register, make_img_tag, #name, #on_handle_html_block, #on_handled, #output_ext, #pre_exclude, priority, #process?, register

Constructor Details

This class inherits a constructor from Jekyll::Spaceship::Processor

Instance Method Details

#handle_attr_list(data) ⇒ Object

Examples: {:ref-name: .cls1 title=“hello” } {: #id ref-name data=“world” } {: #id title=“hello” } {: .cls style=“color: #333” }



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# File 'lib/jekyll-spaceship/processors/table-processor.rb', line 262

def handle_attr_list(data)
  cell = data.cell
  content = cell.inner_html
  # inline attribute list(IAL) handler
  ial_handler = ->(list) do
    list.scan(/(\S+)=("|')(.*?)\2|(\S+)/) do |attr|
      key = attr[0]
      val = attr[2]
      single = attr[3]
      if !key.nil?
        val = (cell.get_attribute(key) || '') + val
        cell.set_attribute(key, val)
      elsif !single.nil?
        if single.start_with? '#'
          key = 'id'
          val = single[1..-1]
        elsif single.start_with? '.'
          key = 'class'
          val = cell.get_attribute(key) || ''
          val += (val.size.zero? ? '' : ' ') + single[1..-1]
        elsif ATTR_LIST_REFS.has_key? single
          ial_handler.call ATTR_LIST_REFS[single]
        end
        unless key.nil?
          cell.set_attribute(key, val)
        end
      end
    end
  end
  # handle attribute list
  content.scan(ATTR_LIST_PATTERN) do |result|
    ref = result[1]
    list = result[2]
    # handle inline attribute list
    ial_handler.call list if ref.nil?
    # remove attr_list
    content = content.sub(result[0], '')
  end
  cell.inner_html = content
end

#handle_colspan(data) ⇒ Object 



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# File 'lib/jekyll-spaceship/processors/table-processor.rb', line 127

def handle_colspan(data)
  scope = data.scope.call __method__
  cells = data.cells
  cell = data.cell

  if scope.table.row != data.row
    scope.table.row = data.row
    scope.row.colspan = 0
  end

  # handle colspan
  if cell == cells.last and scope.row.colspan > 0
    cells.count.downto(cells.count - scope.row.colspan + 1) do |i|
      c = cells[i - 1]
      return unless c.get_attribute('colspan').nil?
      c.remove
    end
  end

  result = cell.content.match(/(\|)+$/)
  return if result.nil?

  cell.content = cell.content.gsub(/(\|)+$/, '')
  result = result[0]
  colspan = result.scan(/\|/).count
  scope.row.colspan += colspan
  cell.set_attribute('colspan', colspan + 1)
end

#handle_format(data) ⇒ Object 



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# File 'lib/jekyll-spaceship/processors/table-processor.rb', line 303

def handle_format(data)
  cell = data.cell
  cvter = self.converter('markdown')
  return if cvter.nil?
  content = cell.inner_html
    .gsub(/(?<!\\)\|/, '\\|')
    .gsub(/^\s+|\s+$/, '')
    .gsub(/&lt;/, '<')
    .gsub(/&gt;/, '>')
  content = cvter.convert(content)
  content = Nokogiri::HTML.fragment(content)
  if content.children.first&.name == 'p'
    content = content.children
  end
  cell.inner_html = content.inner_html
end

#handle_multi_rows(data) ⇒ Object 



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# File 'lib/jekyll-spaceship/processors/table-processor.rb', line 156

def handle_multi_rows(data)
  scope = data.scope.call __method__
  cells = data.cells
  row = data.row
  cell = data.cell

  if scope.table.table != data.table
    scope.table.table = data.table
    scope.table.multi_row_cells = nil
    scope.table.multi_row_start = false
  end

  # handle multi-rows
  return if cell != cells.last

  match = cell.content.match(/(?<!\\)\\\s*$/)
  if match
    cell.content = cell.content.gsub(/(?<!\\)\\\s*$/, '')
    if not scope.table.multi_row_start
      scope.table.multi_row_cells = cells
      scope.table.multi_row_start = true
    end
  end

  if scope.table.multi_row_cells != cells and scope.table.multi_row_start
    for i in 0...scope.table.multi_row_cells.count do
      multi_row_cell = scope.table.multi_row_cells[i]
      multi_row_cell.inner_html += "\n<br>\n#{cells[i].inner_html}"
    end
    row.remove
  end
  scope.table.multi_row_start = false if not match
end

#handle_rowspan(data) ⇒ Object 



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# File 'lib/jekyll-spaceship/processors/table-processor.rb', line 190

def handle_rowspan(data)
  scope = data.scope.call __method__
  cell = data.cell
  cells = data.cells

  if scope.table.table != data.table
    scope.table.table = data.table
    scope.table.span_row_cells = []
  end
  if scope.row.row != data.row
    scope.row.row = data.row
    scope.row.col_index = 0
  end

  # handle rowspan
  span_cell = scope.table.span_row_cells[scope.row.col_index]
  if span_cell and cell.content.match(/^\s*\^{2}/)
    cell.content = cell.content.gsub(/^\s*\^{2}/, '')
    span_cell.inner_html += "\n<br>\n#{cell.inner_html}"
    rowspan = span_cell.get_attribute('rowspan') || 1
    rowspan = rowspan.to_i + 1
    span_cell.set_attribute('rowspan', "#{rowspan}")
    cell.remove
  else
    scope.table.span_row_cells[scope.row.col_index] = cell
  end
  scope.row.col_index += [cell.get_attribute('colspan').to_i, 1].max
end

#handle_text_align(data) ⇒ Object 



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# File 'lib/jekyll-spaceship/processors/table-processor.rb', line 219

def handle_text_align(data)
  cell = data.cell

  # pre-handle text align
  align = 0
  if cell.content.match(/^\s*:(?!:)/)
    cell.content = cell.content.gsub(/^\s*:/, '')
    align += 1
  end
  if cell.content.match(/(?<!\\):\s*$/)
    cell.content = cell.content.gsub(/:\s*$/, '')
    align += 2
  end

  # handle text align
  return if align == 0

  # handle escape colon
  cell.content = cell.content.gsub(/\\:/, ':')

  style = cell.get_attribute('style')
  if align == 1
    align = 'text-align: left'
  elsif align == 2
    align = 'text-align: right'
  elsif align == 3
    align = 'text-align: center'
  end

  # handle existed inline-style
  if style&.match(/text-align:.+/)
    style = style.gsub(/text-align:.+/, align)
  else
    style = align
  end
  cell.set_attribute('style', style)
end

#on_handle_html(content) ⇒ Object 



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# File 'lib/jekyll-spaceship/processors/table-processor.rb', line 66

def on_handle_html(content)
  # use nokogiri to parse html content
  doc = Nokogiri::HTML(content)

  data = self.table_scope_data

  # handle each table
  doc.css('table').each do |table|
    next if table.ancestors('code, pre').size > 0
    rows = table.css('tr')
    data.table = table
    data.rows = rows
    data.reset.call :table
    rows.each do |row|
      cells = row.css('th, td')
      data.row = row
      data.cells = cells
      data.reset.call :row
      cells.each do |cell|
        data.cell = cell
        handle_colspan(data)
        handle_multi_rows(data)
        handle_text_align(data)
        handle_rowspan(data)
        handle_attr_list(data)
      end
    end
    rows.each do |row|
      cells = row.css('th, td')
      cells.each do |cell|
        data.cell = cell
        handle_format(data)
      end
    end
    self.handled = true
  end

  doc.to_html
end

#on_handle_markdown(content) ⇒ Object 



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# File 'lib/jekyll-spaceship/processors/table-processor.rb', line 11

def on_handle_markdown(content)
  # pre-handle reference-style links
  references = {}
  content.scan(/\n\s*(\[(.*)\]:\s*(\S+(\s+".*?")?))/) do |match_data|
    ref_name = match_data[1]
    ref_value = match_data[2]
    references[ref_name] = ref_value
  end
  if references.size > 0
    content.scan(/[^\n]*(?<!\\)\|[^\n]*/) do |result|
      references.each do |key, val|
        replace = result.gsub(
          /\[([^\n\]]*?)\]\s*\[#{key}\]/,
          "[\1](#{val})")
        next if result == replace
        content = content.gsub(result, replace)
      end
    end
  end

  # pre-handle row-span
  content = content.gsub(/(?<!\\)(\|[^\n]*\\\s*)\|\s*\n/, "\\1\n")

  # escape | and :
  content = content.gsub(/\|(?=\|)/, '\\|')
    .gsub(/\\:(?=[^\n]*?(?<!\\)\|)/, '\\\\\\\\:')
    .gsub(/((?<!\\)\|[^\n]*?)(\\:)/, '\1\\\\\\\\:')

  # escape * and _ and $ etc.
  content.scan(/[^\n]*(?<!\\)\|[^\n]*/) do |result|
    # skip for math expression within pipeline
    next unless result
      .gsub(/((?<!\\)\${1,2})[^\n]*?\1/, '')
      .match(/(?<!\\)\|/)
    replace = result.gsub(
      /(?<!(?<!\\)\\)(\*|\$|\[|\(|\"|_)/, '\\\\\\\\\1')
    next if result == replace
    content = content.gsub(result, replace)
  end

  # pre-handle attribute list (AL)
  ATTR_LIST_REFS.clear()
  content.scan(ATTR_LIST_PATTERN) do |result|
    ref = result[1]
    list = result[2]
    next if ref.nil?
    if ATTR_LIST_REFS.has_key? ref
      ATTR_LIST_REFS[ref] += list
    else
      ATTR_LIST_REFS[ref] = list
    end
  end
  content
end

#table_scope_data ⇒ Object 



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# File 'lib/jekyll-spaceship/processors/table-processor.rb', line 106

def table_scope_data
  data = OpenStruct.new(_: OpenStruct.new)
  data.reset = ->(scope, namespace = nil) {
    data._.marshal_dump.each do |key, val|
      if namespace == key or namespace.nil?
        data._[key][scope] = OpenStruct.new
      end
    end
  }
  data.scope = ->(namespace) {
    if not data._[namespace]
      data._[namespace] = OpenStruct.new(
        table: OpenStruct.new,
        row: OpenStruct.new
      )
    end
    data._[namespace]
  }
  data
end