Class: VisualWidth::Table

Inherits:
Object
  • Object
show all
Defined in:
lib/visual_width/table.rb

Constant Summary collapse

LEFT =

align (left, right, center)

-> (cell, fill) {
  cell + (' ' * fill)
}
RIGHT = 
-> (cell, fill) {
  (' ' * fill) + cell
}
CENTER = 
-> (cell, fill) {
  half = fill / 2.0
  (' ' * half.floor) + cell + (' ' * half.ceil)
}

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(header: nil, format: []) ⇒ Table

Returns a new instance of Table.



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# File 'lib/visual_width/table.rb', line 20

def initialize(header: nil, format: [])
  @header = header
  @format = format
end

Instance Attribute Details

Returns the value of attribute footer.



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# File 'lib/visual_width/table.rb', line 4

def footer
  @footer
end

#format ⇒ Object

Returns the value of attribute format.



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# File 'lib/visual_width/table.rb', line 4

def format
  @format
end

#header ⇒ Object

Returns the value of attribute header.



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# File 'lib/visual_width/table.rb', line 4

def header
  @header
end

Instance Method Details

#draw(rows, header: nil, output: "") ⇒ Object 



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# File 'lib/visual_width/table.rb', line 25

def draw(rows, header: nil, output: "")
  max_widths = calc_max_widths(rows)
  h = header || @header
  if h
    max_widths = h.map { |cell| VisualWidth.measure(cell) }
      .zip(max_widths)
      .map { |values| values.max }
    format_header = [CENTER] * h.length
  else
    format_header = nil
  end
  draw_row(output, max_widths, format_header, h, separated: true)
  rows.each do |row|
    draw_row(output, max_widths, @format, row)
  end
  line(output, max_widths)
  output
end