Class: Numerals::Format::Symbols::Padding

Inherits:
Numerals::FormattingAspect show all
Includes:
ModalSupport::StateEquivalent
Defined in:
lib/numerals/format/symbols/padding.rb

Overview

Padding a number to a given width

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods inherited from Numerals::FormattingAspect

#[], [], aspect, #set, set

Constructor Details

#initialize(*args) ⇒ Padding

Parameters:

  • :width field width (0 for no padding)

  • :fill filling symbol; nil for no padding; 0 to use the digit zero; otherwise should be a String

  • :adjust adjust mode: :left, :right, :integer, :center



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# File 'lib/numerals/format/symbols/padding.rb', line 13

def initialize(*args)
  @width = 0
  @fill = nil
  @adjust = :right
  set! *args
end

Instance Attribute Details

#adjust ⇒ Object

Returns the value of attribute adjust.



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# File 'lib/numerals/format/symbols/padding.rb', line 29

def adjust
  @adjust
end

#fill ⇒ Object

Returns the value of attribute fill.



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# File 'lib/numerals/format/symbols/padding.rb', line 29

def fill
  @fill
end

#width ⇒ Object

Returns the value of attribute width.



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# File 'lib/numerals/format/symbols/padding.rb', line 29

def width
  @width
end

Instance Method Details

#inspect ⇒ Object 



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# File 'lib/numerals/format/symbols/padding.rb', line 63

def inspect
  "Format::Symbols::#{to_s}"
end

#leading_zeros=(width) ⇒ Object 



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# File 'lib/numerals/format/symbols/padding.rb', line 31

def leading_zeros=(width)
  @width = width
  @fill = 0
  @adjust = :internal
end

#padded? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/numerals/format/symbols/padding.rb', line 37

def padded?
  @width > 0 && @fill && @fill != ''
end

#padding_sizes(number_size) ⇒ Object

Returns size (characters of left, internal and right padding) for a number of given width (without padding)



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# File 'lib/numerals/format/symbols/padding.rb', line 69

def padding_sizes(number_size)
  left_padding_size = internal_padding_size = right_padding_size = 0
  padding_size = width - number_size
  if padding_size > 0 && padded?
    case adjust
    when :left
      left_padding_size = padding_size
    when :right
      right_padding_size = padding_size
    when :internal
      internal_padding_size = padding_size
    when :center
      left_padding_size = (padding_size + 1) / 2
      right_padding_size = padding_size - left_padding_size
    end
  end
  [left_padding_size, internal_padding_size, right_padding_size]
end

#parameters ⇒ Object 



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# File 'lib/numerals/format/symbols/padding.rb', line 41

def parameters
  { width: width, fill: fill, adjust: adjust }
end

#to_s ⇒ Object 



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# File 'lib/numerals/format/symbols/padding.rb', line 45

def to_s
  params = []
  if fill == 0 && adjust == :internal
    params << "leading_zeros: #{width}"
  else
    if width != 0
      params << "width: #{width}"
    end
    if fill
      params << "fill: #{fill.inspect}"
    end
    if adjust != :right || !params.empty?
      params << "adjust: #{adjust.inspect}"
    end
  end
  "Padding[#{params.join(', ')}]"
end