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46 lines
1.4 KiB
46 lines
1.4 KiB
#!/usr/bin/env python
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from __future__ import print_function
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import sys, tty, termios
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# This allows Ctrl-C and related keyboard commands to still function.
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# It detects escape codes in order to recognize arrow keys. It also
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# has buffer flushing to avoid repeated commands. This is
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# blocking code.
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def getch():
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stdin_fd = 0
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# "Return a list containing the tty attributes for file descriptor
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# fd, as follows: [iflag, oflag, cflag, lflag, ispeed, ospeed, cc]"
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# from https://docs.python.org/2/library/termios.html
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original_tty_attributes = termios.tcgetattr(stdin_fd)
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new_tty_attributes = termios.tcgetattr(stdin_fd)
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# Change the lflag (local modes) to turn off canonical mode
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new_tty_attributes[3] &= ~termios.ICANON
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# Set VMIN = 0 and VTIME > 0 for a timed read, as explained in:
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# http://unixwiz.net/techtips/termios-vmin-vtime.html
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new_tty_attributes[6][termios.VMIN] = b'\x00'
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new_tty_attributes[6][termios.VTIME] = b'\x01'
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try:
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termios.tcsetattr(stdin_fd, termios.TCSAFLUSH, new_tty_attributes)
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ch1 = sys.stdin.read(1)
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if ch1 == '\x1b':
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# special key pressed
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ch2 = sys.stdin.read(1)
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ch3 = sys.stdin.read(1)
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ch = ch1 + ch2 + ch3
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else:
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# not a special key
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ch = ch1
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finally:
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termios.tcsetattr(stdin_fd, termios.TCSAFLUSH, original_tty_attributes)
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return ch
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if __name__ == '__main__':
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while True:
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c = getch()
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print('c')
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