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46 lines
1.7 KiB
Python
46 lines
1.7 KiB
Python
"""Eval python code with global namespace of a python source file."""
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# Copyright (C) 2002-2016 John Goerzen & contributors
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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import importlib.util
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class LocalEval:
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"""Here is a powerful but very dangerous option, of course."""
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def __init__(self, path=None):
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self.namespace = {}
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if path is not None:
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import importlib.machinery
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# FIXME: limit opening files owned by current user with rights set
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# to fixed mode 644.
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importlib.machinery.SOURCE_SUFFIXES.append('') # empty string to allow any file
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spec = importlib.util.spec_from_file_location('<none>', path)
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module = importlib.util.module_from_spec(spec)
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spec.loader.exec_module(module)
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for attr in dir(module):
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self.namespace[attr] = getattr(module, attr)
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def eval(self, text, namespace=None):
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names = {}
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names.update(self.namespace)
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if namespace is not None:
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names.update(namespace)
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return eval(text, names)
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