add ydb deps

1 files changed, 74 insertions, 0 deletions

diff --git a/contrib/python/ipython/py2/IPython/utils/rlineimpl.py b/contrib/python/ipython/py2/IPython/utils/rlineimpl.py
new file mode 100644
index 0000000000..e1cf03942c
--- /dev/null
+++ b/contrib/python/ipython/py2/IPython/utils/rlineimpl.py
@@ -0,0 +1,74 @@
+# -*- coding: utf-8 -*-
+""" Imports and provides the 'correct' version of readline for the platform.
+
+Readline is used throughout IPython as::
+
+    import IPython.utils.rlineimpl as readline
+
+In addition to normal readline stuff, this module provides have_readline
+boolean and _outputfile variable used in IPython.utils.
+"""
+
+import sys
+import warnings
+
+_rlmod_names = ['gnureadline', 'readline']
+
+have_readline = False
+for _rlmod_name in _rlmod_names:
+    try:
+        # import readline as _rl
+        _rl = __import__(_rlmod_name)
+        # from readline import *
+        globals().update({k:v for k,v in _rl.__dict__.items() if not k.startswith('_')})
+    except ImportError:
+        pass
+    else:
+        have_readline = True
+        break
+
+if have_readline and (sys.platform == 'win32' or sys.platform == 'cli'):
+    try:
+        _outputfile=_rl.GetOutputFile()
+    except AttributeError:
+        warnings.warn("Failed GetOutputFile")
+        have_readline = False
+
+# Test to see if libedit is being used instead of GNU readline.
+# Thanks to Boyd Waters for the original patch.
+uses_libedit = False
+
+if have_readline:
+    # Official Python docs state that 'libedit' is in the docstring for libedit readline:
+    uses_libedit = _rl.__doc__ and 'libedit' in _rl.__doc__
+    # Note that many non-System Pythons also do not use proper readline,
+    # but do not report libedit at all, nor are they linked dynamically against libedit.
+    # known culprits of this include: EPD, Fink
+    # There is not much we can do to detect this, until we find a specific failure
+    # case, rather than relying on the readline module to self-identify as broken.
+
+if uses_libedit and sys.platform == 'darwin':
+    _rl.parse_and_bind("bind ^I rl_complete")
+    warnings.warn('\n'.join(['', "*"*78,
+        "libedit detected - readline will not be well behaved, including but not limited to:",
+        "   * crashes on tab completion",
+        "   * incorrect history navigation",
+        "   * corrupting long-lines",
+        "   * failure to wrap or indent lines properly",
+        "It is highly recommended that you install gnureadline, which is installable with:",
+        "     pip install gnureadline",
+        "*"*78]),
+        RuntimeWarning)
+
+# the clear_history() function was only introduced in Python 2.4 and is
+# actually optional in the readline API, so we must explicitly check for its
+# existence.  Some known platforms actually don't have it.  This thread:
+# http://mail.python.org/pipermail/python-dev/2003-August/037845.html
+# has the original discussion.
+
+if have_readline:
+    try:
+        _rl.clear_history
+    except AttributeError:
+        def clear_history(): pass
+        _rl.clear_history = clear_history