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# This code is part of Ansible, but is an independent component.
# This particular file snippet, and this file snippet only, is BSD licensed.
# Modules you write using this snippet, which is embedded dynamically by Ansible
# still belong to the author of the module, and may assign their own license
# to the complete work.
#
# Copyright (c) 2016, Toshio Kuratomi <tkuratomi@ansible.com>
# Copyright (c) 2015, Marius Gedminas
#
# Redistribution and use in source and binary forms, with or without modification,
# are permitted provided that the following conditions are met:
#
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright notice,
# this list of conditions and the following disclaimer in the documentation
# and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
# IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
# USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
from __future__ import (absolute_import, division, print_function)
__metaclass__ = type
import sys
def get_exception():
"""Get the current exception.
This code needs to work on Python 2.4 through 3.x, so we cannot use
"except Exception, e:" (SyntaxError on Python 3.x) nor
"except Exception as e:" (SyntaxError on Python 2.4-2.5).
Instead we must use ::
except Exception:
e = get_exception()
"""
return sys.exc_info()[1]
try:
# Python 2.6+
from ast import literal_eval
except ImportError:
# a replacement for literal_eval that works with python 2.4. from:
# https://mail.python.org/pipermail/python-list/2009-September/551880.html
# which is essentially a cut/paste from an earlier (2.6) version of python's
# ast.py
from compiler import ast, parse
from ansible.module_utils.six import binary_type, integer_types, string_types, text_type
def literal_eval(node_or_string): # type: ignore[misc]
"""
Safely evaluate an expression node or a string containing a Python
expression. The string or node provided may only consist of the following
Python literal structures: strings, numbers, tuples, lists, dicts, booleans,
and None.
"""
_safe_names = {'None': None, 'True': True, 'False': False}
if isinstance(node_or_string, string_types):
node_or_string = parse(node_or_string, mode='eval')
if isinstance(node_or_string, ast.Expression):
node_or_string = node_or_string.node
def _convert(node):
if isinstance(node, ast.Const) and isinstance(node.value, (text_type, binary_type, float, complex) + integer_types):
return node.value
elif isinstance(node, ast.Tuple):
return tuple(map(_convert, node.nodes))
elif isinstance(node, ast.List):
return list(map(_convert, node.nodes))
elif isinstance(node, ast.Dict):
return dict((_convert(k), _convert(v)) for k, v in node.items())
elif isinstance(node, ast.Name):
if node.name in _safe_names:
return _safe_names[node.name]
elif isinstance(node, ast.UnarySub):
return -_convert(node.expr) # pylint: disable=invalid-unary-operand-type
raise ValueError('malformed string')
return _convert(node_or_string)
__all__ = ('get_exception', 'literal_eval')
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