Module: Postscript::FormatNumber

Defined in:
lib/postscript/format_number.rb

Overview

Single source of truth for formatting numbers in both directions.

  • Integers print without a trailing ".0".
  • Floats print to 4 decimals, trailing zeros stripped.
  • -0 normalizes to 0 (so viewBoxes don't read "0 -0 100 100").
  • +Inf / -Inf / NaN raise ArgumentError; callers should validate.

Class Method Summary collapse

Class Method Details

.call(value) ⇒ Object

Raises:

  • (ArgumentError) 


13
14
15
16
17
18
19
20
 
# File 'lib/postscript/format_number.rb', line 13

def call(value)
  raise ArgumentError, "non-finite number: #{value.inspect}" unless value.finite?

  normalized = value.zero? ? 0.0 : value
  return normalized.to_i.to_s if normalized == normalized.to_i

  format("%.4f", normalized).sub(/\.?0+$/, "")
end