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Merge pull request #937 from minrk/readline...
Merge pull request #937 from minrk/readline Add dirty trick for readline import on OSX to more aggressively detect the presence of libedit masquerading as true GNU readline. Also made the libedit warning extremely loud, so people don't miss it. See the original PR page for the gory details; short version: 1. remove lib-dynload from sys.path before trying to import readline the first time 2. after import, restore lib-dynload to its place in sys.path 3. if import failed without lib-dynload, try it one more time, to get the default module

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payloadpage.py
96 lines | 2.8 KiB | text/x-python | PythonLexer
# 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
#-----------------------------------------------------------------------------
# Third-party
try:
from docutils.core import publish_string
except ImportError:
# html paging won't be available, but we don't raise any errors. It's a
# purely optional feature.
pass
# Our own
from IPython.core.interactiveshell import InteractiveShell
#-----------------------------------------------------------------------------
# Classes and functions
#-----------------------------------------------------------------------------
def page(strng, start=0, screen_lines=0, pager_cmd=None,
html=None, auto_html=False):
"""Print a string, piping through a pager.
This version ignores the screen_lines and pager_cmd arguments and uses
IPython's payload system instead.
Parameters
----------
strng : str
Text to page.
start : int
Starting line at which to place the display.
html : str, optional
If given, an html string to send as well.
auto_html : bool, optional
If true, the input string is assumed to be valid reStructuredText and is
converted to HTML with docutils. Note that if docutils is not found,
this option is silently ignored.
Note
----
Only one of the ``html`` and ``auto_html`` options can be given, not
both.
"""
# 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()
if auto_html:
try:
# These defaults ensure user configuration variables for docutils
# are not loaded, only our config is used here.
defaults = {'file_insertion_enabled': 0,
'raw_enabled': 0,
'_disable_config': 1}
html = publish_string(strng, writer_name='html',
settings_overrides=defaults)
except:
pass
payload = dict(
source='IPython.zmq.page.page',
text=strng,
html=html,
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