Module: CiteProc::Ruby::SortItems

Included in:
Engine
Defined in:
lib/citeproc/ruby/sort.rb

Instance Method Summary collapse

Instance Method Details

#compare_items(a, b) ⇒ Object 



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# File 'lib/citeproc/ruby/sort.rb', line 66

def compare_items(a, b)
  if sort_case_sensitively?
    a <=> b
  else
    a.to_s.downcase <=> b.to_s.downcase
  end
end

#compare_items_by_key(a, b, key) ⇒ Object 



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# File 'lib/citeproc/ruby/sort.rb', line 34

def compare_items_by_key(a, b, key)
  if key.macro?
    result = compare_items(*renderer.render_sort(a, b, key.macro, key))

  else
    va, vb = a[key.variable], b[key.variable]

    # Return early if one side is nil. In this
    # case ascending/descending is irrelevant!
    return  1 if va.nil? || va.empty?
    return -1 if vb.nil? || vb.empty?

    result = case CiteProc::Variable.types[key.variable]
      when :names
        node = CSL::Style::Name.new(key.name_options)
        node.all_names_as_sort_order!

        compare_items(*renderer.render_sort(va, vb, node, key))

      when :date
        va <=> vb
      when :number
        va <=> vb
      else
        compare_items(va, vb)
      end
  end

  result = -result unless key.ascending?
  result
end

#compare_items_by_keys(a, b, keys) ⇒ Object 



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# File 'lib/citeproc/ruby/sort.rb', line 22

def compare_items_by_keys(a, b, keys)
  result = 0

  keys.each do |key|
    result = compare_items_by_key(a, b, key)
    return result unless result.zero?
  end

  result
end

#sort!(items, keys) ⇒ Object 



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# File 'lib/citeproc/ruby/sort.rb', line 6

def sort!(items, keys)
  return items unless !keys.nil? && !keys.empty?

  # TODO refactor
  if items.is_a?(CitationData)
    items.sort! do |a, b|
      compare_items_by_keys(a.data, b.data, keys)
    end
  else
    items.sort! do |a, b|
      compare_items_by_keys(a, b, keys)
    end
  end
end

#sort_case_sensitively? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/citeproc/ruby/sort.rb', line 74

def sort_case_sensitively?
  return false unless processor && processor.options
  processor.options[:sort_case_sensitively]
end