56 lines
1.9 KiB
Python
56 lines
1.9 KiB
Python
"""
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Copyright 2017 Snyk Ltd.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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"""
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import distutils.core
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import re
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import setuptools
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def parse(setup_py_content):
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"""Parse a setup.py file and extract the arguments passed to the setup method"""
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# Make the setup method return the arguments that are passed to it
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def _save_passed_args(**kwargs):
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return kwargs
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distutils.core.setup = _save_passed_args
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setuptools.setup = _save_passed_args
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setup_py_content = setup_py_content.replace("setup(", "passed_arguments = setup(")
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# Fetch the arguments that were passed to the setup.py
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exec(setup_py_content, globals())
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return globals()["passed_arguments"]
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def parse_name_and_version(setup_py_content):
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"""Extract the name and version from a setup.py file"""
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passed_arguments = parse(setup_py_content)
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return passed_arguments.get("name"), passed_arguments.get("version")
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def get_provenance(setup_py_content):
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"""Provenance for a setup.py file is the index of the line that contains `install_requires`"""
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for index, line in enumerate(setup_py_content.splitlines()):
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if re.search(r"(packages|install_requires)\s*=", line):
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return index + 1
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return -1
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def parse_requirements(setup_py_content):
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"""Extract the dependencies from a setup.py file"""
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passed_arguments = parse(setup_py_content)
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requirements = passed_arguments.get("install_requires", passed_arguments.get("packages", []))
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return "\n".join(requirements)
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