Lib/tty.py

   1 """Terminal utilities."""
   2
   3 # Author: Steen Lumholt.
   4
   5 from TERMIOS import *
   6 from termios import *
   7
   8 # Indexes for termios list.
   9 IFLAG = 0
  10 OFLAG = 1
  11 CFLAG = 2
  12 LFLAG = 3
  13 ISPEED = 4
  14 OSPEED = 5
  15 CC = 6
  16
  17 def setraw(fd, when=TCSAFLUSH):
  18         """Put terminal into a raw mode."""
  19         mode = tcgetattr(fd)
  20         mode[IFLAG] = mode[IFLAG] & ~(BRKINT | ICRNL | INPCK | ISTRIP | IXON)
  21         mode[OFLAG] = mode[OFLAG] & ~(OPOST)
  22         mode[CFLAG] = mode[CFLAG] & ~(CSIZE | PARENB)
  23         mode[CFLAG] = mode[CFLAG] | CS8
  24         mode[LFLAG] = mode[LFLAG] & ~(ECHO | ICANON | IEXTEN | ISIG)
  25         mode[CC][VMIN] = 1
  26         mode[CC][VTIME] = 0
  27         tcsetattr(fd, when, mode)
  28
  29 def setcbreak(fd, when=TCSAFLUSH):
  30         """Put terminal into a cbreak mode."""
  31         mode = tcgetattr(fd)
  32         mode[LFLAG] = mode[LFLAG] & ~(ECHO | ICANON)
  33         mode[CC][VMIN] = 1
  34         mode[CC][VTIME] = 0
  35         tcsetattr(fd, when, mode)
  36