termsize

gistfile1.py

# -*- coding: utf-8 -*-

from ctypes import c_ushort, sizeof, Structure
import fcntl
import sys
import termios


class WinSize(Structure):
    '''To get the terminal size information via the UNIX systemcall 
    'ioctl()'. This is needed cause the control sequence '\033[18t'
    only work proper in xterm-like terminals but not without running
    X-Server.

    The 'WinSize.from_file()'-method returns the result of 'ioctl()'
    and is wrapped by 'window_size()'. Use this function instead.

    Thanks to 'BlackJack' from 'python-forum.de' for this 
    peace of code...!
    '''
    _fields_ = [
        ('rows', c_ushort),
        ('columns', c_ushort),
        ('x_pixels', c_ushort), # Unused.
        ('y_pixels', c_ushort), # Unused.
    ]
   
    @classmethod
    def from_file(cls, tty_file):
        result = fcntl.ioctl(tty_file, 
                             termios.TIOCGWINSZ, '\0' * sizeof(cls))
        return cls.from_buffer_copy(result)

def term_size():
    '''term_size() -> (rows, columns)

    In contrast to graphical frameworks which not working with
    chars but with pixels as unit the result of this function
    begins with (1, 1) that means the upper left corner.'''
    size = WinSize.from_file(sys.stdout)
    return size.rows, size.columns