upstream/ipython Files · IPython/core/payloadpage.py

Fully refactored subprocess handling on all platforms....

Fully refactored subprocess handling on all platforms. Now we have all process-related code in utils.process, which itself imports from platform-specific files as needed. On posix, we have reliable asynchronous delivery of stdout and stderr, and on win32 at least we have the basics that subprocess.py provides, since pexpect is not available. We also now support robust killing of subprocesses that may capture SIGINT: one SIGINT on our end is sent to the subprocess, but then we kill it, to prevent a rogue subprocess from hijacking the ipython console. Note that on posix, we now depend on pexpect, but we ship our own copy to users which we'll use if there's no system pexpect installed. UNC path handling for windows was implemented as a context manager called AvoidUNCPath.

Brian Granger - - Load All Authors

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             payloadpage.py
        
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      #!/usr/bin/env python

      # encoding: utf-8

      """

      A payload based version of page.

      Authors:

      * Brian Granger

      * Fernando Perez

      """

      #-----------------------------------------------------------------------------

      #  Copyright (C) 2008-2010  The IPython Development Team

      #

      #  Distributed under the terms of the BSD License.  The full license is in

      #  the file COPYING, distributed as part of this software.

      #-----------------------------------------------------------------------------

      #-----------------------------------------------------------------------------

      # Imports

      #-----------------------------------------------------------------------------

      from IPython.core.interactiveshell import InteractiveShell

      #-----------------------------------------------------------------------------

      # Classes and functions

      #-----------------------------------------------------------------------------

      def page(strng, start=0, screen_lines=0, pager_cmd=None):

          """Print a string, piping through a pager.

          This version ignores the screen_lines and pager_cmd arguments and uses

          IPython's payload system instead.

          """

          # Some routines may auto-compute start offsets incorrectly and pass a

          # negative value.  Offset to 0 for robustness.

          start = max(0, start)

          shell = InteractiveShell.instance()

          payload = dict(

              source='IPython.zmq.page.page',

              data=strng,

              start_line_number=start

          )

          shell.payload_manager.write_payload(payload)

      def install_payload_page():

          """Install this version of page as IPython.core.page.page."""

          from IPython.core import page as corepage

          corepage.page = page

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				#!/usr/bin/env python
				# encoding: utf-8
				"""
				A payload based version of page.

				Authors:

				* Brian Granger
				* Fernando Perez
				"""

				#-----------------------------------------------------------------------------
				# Copyright (C) 2008-2010 The IPython Development Team
				#
				# Distributed under the terms of the BSD License. The full license is in
				# the file COPYING, distributed as part of this software.
				#-----------------------------------------------------------------------------

				#-----------------------------------------------------------------------------
				# Imports
				#-----------------------------------------------------------------------------

				from IPython.core.interactiveshell import InteractiveShell

				#-----------------------------------------------------------------------------
				# Classes and functions
				#-----------------------------------------------------------------------------

				def page(strng, start=0, screen_lines=0, pager_cmd=None):
				"""Print a string, piping through a pager.

				This version ignores the screen_lines and pager_cmd arguments and uses
				IPython's payload system instead.
				"""

				# Some routines may auto-compute start offsets incorrectly and pass a
				# negative value. Offset to 0 for robustness.
				start = max(0, start)
				shell = InteractiveShell.instance()
				payload = dict(
				source='IPython.zmq.page.page',
				data=strng,
				start_line_number=start
				)
				shell.payload_manager.write_payload(payload)

				def install_payload_page():
				"""Install this version of page as IPython.core.page.page."""
				from IPython.core import page as corepage
				corepage.page = page