Method: TTY::Reader#count_screen_lines

Defined in:
lib/tty/reader.rb

#count_screen_lines(line_or_size, screen_width = TTY::Screen.width) ⇒ Integer

Count the number of screen lines given line takes up in terminal

Parameters:

  • line_or_size (Integer) —

    the current line or its length

  • screen_width (Integer) (defaults to: TTY::Screen.width) —

    the width of terminal screen

Returns:

  • (Integer) 

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# File 'lib/tty/reader.rb', line 362

def count_screen_lines(line_or_size, screen_width = TTY::Screen.width)
  line_size = if line_or_size.is_a?(Integer)
                line_or_size
              else
                Line.sanitize(line_or_size).size
              end
  # new character + we don't want to add new line on screen_width
  new_chars = self.class.windows? ? -1 : 1
  1 + [0, (line_size - new_chars) / screen_width].max
end