Class: String

Inherits:
Object
  • Object
show all
Defined in:
lib/unicode/display_width.rb

Instance Method Summary collapse

Instance Method Details

#display_length(*args) ⇒ Object 



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# File 'lib/unicode/display_width.rb', line 50

def display_length(*args)
  warn "Deprecation warning: Please use `String#display_width` instead of `String#display_length`"
  display_width(*args)
end

#display_size(*args) ⇒ Object 



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# File 'lib/unicode/display_width.rb', line 45

def display_size(*args)
  warn "Deprecation warning: Please use `String#display_width` instead of `String#display_size`"
  display_width(*args)
end

#display_width(ambiguous = 1) ⇒ Object 



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# File 'lib/unicode/display_width.rb', line 30

def display_width(ambiguous = 1)
  unpack('U*').inject(0){ |total_width, char|
    total_width + case Unicode::DisplayWidth.codepoint(char).to_s
    when 'F', 'W'
      2
    when 'N', 'Na', 'H'
      1
    when 'A'
      ambiguous
    else
      1
    end
  }
end