Class: Termplot::Shell

Inherits:
Object
  • Object
show all
Defined in:
lib/termplot/shell.rb

Constant Summary collapse

CURSOR_HIDE = 
"\e[?25l"
CURSOR_SHOW = 
"\e[?25h"

Class Attribute Summary collapse

Class Method Summary collapse

Class Attribute Details

.termios_settings ⇒ Object (readonly)

Returns the value of attribute termios_settings.



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# File 'lib/termplot/shell.rb', line 6

def termios_settings
  @termios_settings
end

Class Method Details

.init ⇒ Object 



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# File 'lib/termplot/shell.rb', line 10

def init
  # Disable echo on stdout tty, prevents printing chars if you type in
  # between rendering
  @termios_settings = Termios.tcgetattr($stdout)
  new_termios_settings = termios_settings.dup
  new_termios_settings.c_lflag &= ~(Termios::ECHO)
  Termios.tcsetattr($stdout, Termios::TCSAFLUSH, new_termios_settings)

  print CURSOR_HIDE
  at_exit { reset }
  Signal.trap("INT") { exit(0) }
end

.reset ⇒ Object 



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# File 'lib/termplot/shell.rb', line 23

def reset
  # Reset stdout tty to original settings
  Termios.tcsetattr($stdout, Termios::TCSAFLUSH, termios_settings)

  print CURSOR_SHOW
end