upstream/ipython Files · IPython/utils/winconsole.py

Fixing small bug in activate....

Fixing small bug in activate. If the parallelmagic extension has not been loaded, activate would get an empty list from get_component. Now get_component returns None in that case and activate checks for None and prints a message to the user to load the extension.

Brian Granger - - Load All Authors

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             winconsole.py
        
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      """Set of functions to work with console on Windows.

      """

      #*****************************************************************************

      #       Copyright (C) 2005 Alexander Belchenko <bialix@ukr.net>

      #

      #                This file is placed in the public domain.

      #

      #*****************************************************************************

      __author__  = 'Alexander Belchenko (e-mail: bialix AT ukr.net)'

      __license__ = 'Public domain'

      import struct

      try:

          import ctypes

      except ImportError:

          ctypes = None

      def get_console_size(defaultx=80, defaulty=25):

          """ Return size of current console.

          This function try to determine actual size of current working

          console window and return tuple (sizex, sizey) if success,

          or default size (defaultx, defaulty) otherwise.

          Dependencies: ctypes should be installed.

          """

          if ctypes is None:

              # no ctypes is found

              return (defaultx, defaulty)

          h = ctypes.windll.kernel32.GetStdHandle(-11)

          csbi = ctypes.create_string_buffer(22)

          res = ctypes.windll.kernel32.GetConsoleScreenBufferInfo(h, csbi)

          if res:

              (bufx, bufy, curx, cury, wattr,

               left, top, right, bottom, maxx, maxy) = struct.unpack("hhhhHhhhhhh",

                                                                     csbi.raw)

              sizex = right - left + 1

              sizey = bottom - top + 1

              return (sizex, sizey)

          else:

              return (defaultx, defaulty)

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				"""Set of functions to work with console on Windows.
				"""

				#*****************************************************************************
				# Copyright (C) 2005 Alexander Belchenko <bialix@ukr.net>
				#
				# This file is placed in the public domain.
				#
				#*****************************************************************************

				__author__ = 'Alexander Belchenko (e-mail: bialix AT ukr.net)'
				__license__ = 'Public domain'

				import struct

				try:
				import ctypes
				except ImportError:
				ctypes = None

				def get_console_size(defaultx=80, defaulty=25):
				""" Return size of current console.

				This function try to determine actual size of current working
				console window and return tuple (sizex, sizey) if success,
				or default size (defaultx, defaulty) otherwise.

				Dependencies: ctypes should be installed.
				"""
				if ctypes is None:
				# no ctypes is found
				return (defaultx, defaulty)

				h = ctypes.windll.kernel32.GetStdHandle(-11)
				csbi = ctypes.create_string_buffer(22)
				res = ctypes.windll.kernel32.GetConsoleScreenBufferInfo(h, csbi)

				if res:
				(bufx, bufy, curx, cury, wattr,
				left, top, right, bottom, maxx, maxy) = struct.unpack("hhhhHhhhhhh",
				csbi.raw)
				sizex = right - left + 1
				sizey = bottom - top + 1
				return (sizex, sizey)
				else:
				return (defaultx, defaulty)