Module: ObjectTable::Printable

Included in:
TableMethods
Defined in:
lib/object_table/printable.rb

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.get_printable_column(name, column) ⇒ Object 



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# File 'lib/object_table/printable.rb', line 3

def self.get_printable_column(name, column)
  padding = [nil] * (column.rank - 1)
  rows = column.shape[-1].times.map do |i|
    row = column[*padding, i]
    str = row.is_a?(NArray) ? row.inspect.partition("\n")[-1].strip : row.inspect
    str.split("\n")
  end

  name = name.to_s
  [[name]] + rows + [[name]]
end

.get_printable_line_numbers(numbers) ⇒ Object 



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# File 'lib/object_table/printable.rb', line 15

def self.get_printable_line_numbers(numbers)
  rows = numbers.map do |i|
    ["#{i}: "]
  end

  [['']] + rows + [['']]
end

Instance Method Details

#inspect(max_section = 5, col_padding = 2) ⇒ Object 



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# File 'lib/object_table/printable.rb', line 23

def inspect(max_section = 5, col_padding = 2)
  header = "#{self.class}(#{nrows}, #{ncols})\n"

  return (header + "(empty table)") if ncols == 0
  return (header + "(empty table with columns: #{colnames.join(", ")})") if nrows == 0

  printed_columns = []

  if nrows > max_section * 2
    head = (0...max_section)
    tail = ((nrows - max_section)...nrows)

    printed_columns.push ObjectTable::Printable.get_printable_line_numbers(head.to_a + tail.to_a)

    printed_columns += columns.map do |name, c|
      padding = [nil] * (c.rank - 1)
      c = c.slice(*padding, [head, tail])
      ObjectTable::Printable.get_printable_column(name, c)
    end
  else
    max_section = -1
    printed_columns.push ObjectTable::Printable.get_printable_line_numbers(0...nrows)
    printed_columns += columns.map do |name, c|
      ObjectTable::Printable.get_printable_column(name, c)
    end
  end

  widths = printed_columns.map{|row| row.flat_map{|c| c.map(&:length)}.max + col_padding}

  header + printed_columns.transpose.each_with_index.map do |row, index|
    height = row.map(&:length).max

    row = row.zip(widths).map do |cell, width|
      cell += [" "] * (height - cell.length)
      cell.map{|i| i.rjust(width)}
    end

    row = row.transpose.map{|i| i.join('')}.join("\n")

    if index == max_section
      row += "\n" + '-'*widths.reduce(:+)
    end
    row
  end.join("\n")

rescue NoMethodError => e
  raise Exception.new(e)
end