terminal_info.py 文件源码

def _getTerminalSize_linux():
  import os
  from os import environ as env
  def ioctl_GWINSZ(fd):
    try:
      import fcntl, termios, struct, os
      cr = struct.unpack('hh', fcntl.ioctl(fd, termios.TIOCGWINSZ,'1234'))
    except:
      return None
    return cr
  cr = ioctl_GWINSZ(0) or ioctl_GWINSZ(1) or ioctl_GWINSZ(2)
  if not cr:
    try:
      fd = os.open(os.ctermid(), os.O_RDONLY)
      cr = ioctl_GWINSZ(fd)
      os.close(fd)
    except:
      pass
  if not cr:
    try:
      cr = (env['LINES'], env['COLUMNS'])
    except:
      return None
  return int(cr[1]), int(cr[0])