Module: YaKansuji::Formatter

Defined in:
lib/ya_kansuji/formatter.rb,
lib/ya_kansuji/formatter/gov.rb,
lib/ya_kansuji/formatter/lawyer.rb,
lib/ya_kansuji/formatter/simple.rb,
lib/ya_kansuji/formatter/judic_h.rb,
lib/ya_kansuji/formatter/judic_v.rb

Overview

Shared helpers for built-in formatters.

Defined Under Namespace

Modules: Gov, JudicH, JudicV, Lawyer, Simple

Constant Summary collapse

UNIT4_BASE = 
10_000
UNIT4_CHUNK_LIMIT = 
UNIT_EXP4.size + 1
UNIT4_UNITS = 
([''] + UNIT_EXP4).freeze
EMPTY_FRACTION = 
[].freeze

Class Method Summary collapse

Class Method Details

.split_by_unit4(num) ⇒ Object 



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# File 'lib/ya_kansuji/formatter.rb', line 13

def split_by_unit4(num)
  chunks = []
  UNIT4_CHUNK_LIMIT.times do
    num, chunk = num.divmod(UNIT4_BASE)
    chunks << chunk
    break if num.zero?
  end
  chunks
end

.split_fraction(num) ⇒ Object

Raises:

  • (ArgumentError) 


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# File 'lib/ya_kansuji/formatter.rb', line 23

def split_fraction(num)
  num = YaKansuji.normalize_value(num)
  raise ArgumentError, 'Value must be non-negative' if num.negative?

  return [num, EMPTY_FRACTION] if num.is_a?(Integer)

  int = num.truncate
  scaled = ((num - int) * FRAC_BASE).to_i
  digits = []
  UNIT_FRAC.size.times do
    scaled, d = scaled.divmod(10)
    digits.unshift(d) unless digits.empty? && d.zero?
  end
  [int, digits]
end