Coverage for lib/ansible/module_utils/pycompat24.py : 10%

# 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. 

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): 

""" 

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) 

raise ValueError('malformed string') 

return _convert(node_or_string) 

__all__ = ('get_exception', 'literal_eval')