module MultiProgressBar

Constants

VERSION

Attributes

bars[R]

Public Class Methods

end() click to toggle source

Restore the terminal to normal function. Always call this before exiting.

# File lib/ruby-multi-progressbar.rb, line 37
def end
  # Give an extra line below the output for the shell to prompt on.
  add_bar(nil)

  Ncurses.endwin
end
log(text) click to toggle source

Write text to the space above the progress bars.

# File lib/ruby-multi-progressbar.rb, line 45
def log(text)
  text = text.to_s

  # Parse ANSI escape codes.
  text.scan(/([^\e]*)(?:\e\[(\d+.))?/) do |normal_text, code|
    @log_window.addstr(normal_text)
    case code
      when /3(\d)m/
        @log_window.attron(Ncurses.COLOR_PAIR($1.to_i))
      when /0m/
        @log_window.attron(Ncurses.COLOR_PAIR(7))
    end
  end
  @log_window.addstr("\n")
  @log_window.refresh
end
refresh_window_positions() click to toggle source 
# File lib/ruby-multi-progressbar.rb, line 66
def refresh_window_positions
  @bars_window.mvwin(Ncurses.LINES-bars.size, @bars_window.getbegx)
  @bars_window.resize(bars.size, @bars_window.getmaxx)
  @bars_window.refresh

  @log_window.resize(Ncurses.LINES-bars.size, @log_window.getmaxx)
  @log_window.refresh
end
start() click to toggle source

Set up the screen. Always call MultiProgressBar.start before using progress bars.

# File lib/ruby-multi-progressbar.rb, line 10
def start
  @bars = [].freeze

  Ncurses.initscr
  Ncurses.curs_set(0)
  Ncurses.start_color

  (0..7).each { |color_number| Ncurses.init_pair(color_number, color_number, Ncurses::COLOR_BLACK); }

  @bars_window = Ncurses::WINDOW.new(1, 0, Ncurses.LINES-1, 0)
  @log_window  = Ncurses::WINDOW.new(Ncurses.LINES-1, 0, 0, 0)
  @log_window.scrollok(true)

  trap("SIGWINCH") do
    Ncurses.endwin
    Ncurses.refresh

    refresh_window_positions

    @bars.each do |bar|
      bar.width = @bars_window.getmaxx
      bar.show
    end
  end
end