mbedtls/scripts/min_requirements.py
Gilles Peskine 9172c9c073 Script to install minimum versions of the requirements
Wherever we have a requirement on foo>=N, install foo==N. This is for
testing, to ensure that we don't accidentally depend on features that are
not present in the minimum version we declare support for.

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
2021-11-17 19:27:45 +01:00

106 lines
3.6 KiB
Python
Executable file

#!/usr/bin/env python3
"""Install all the required Python packages, with the minimum Python version.
"""
# Copyright The Mbed TLS Contributors
# SPDX-License-Identifier: Apache-2.0
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import argparse
import os
import re
import sys
import typing
from typing import List
from mbedtls_dev import typing_util
def pylint_doesn_t_notice_that_certain_types_are_used_in_annotations(
_list: List[typing.Any],
) -> None:
pass
class Requirements:
"""Collect and massage Python requirements."""
def __init__(self) -> None:
self.requirements = [] #type: List[str]
def adjust_requirement(self, req: str) -> str:
"""Adjust a requirement to the minimum specified version."""
# allow inheritance #pylint: disable=no-self-use
# If a requirement specifies a minimum version, impose that version.
req = re.sub(r'>=|~=', r'==', req)
return req
def add_file(self, filename: str) -> None:
"""Add requirements from the specified file.
This method supports a subset of pip's requirement file syntax:
* One requirement specifier per line, which is passed to
`adjust_requirement`.
* Comments (``#`` at the beginning of the line or after whitespace).
* ``-r FILENAME`` to include another file.
"""
for line in open(filename):
line = line.strip()
line = re.sub(r'(\A|\s+)#.*', r'', line)
if not line:
continue
m = re.match(r'-r\s+', line)
if m:
nested_file = os.path.join(os.path.dirname(filename),
line[m.end(0):])
self.add_file(nested_file)
continue
self.requirements.append(self.adjust_requirement(line))
def write(self, out: typing_util.Writable) -> None:
"""List the gathered requirements."""
for req in self.requirements:
out.write(req + '\n')
def install(self) -> None:
"""Call pip to install the requirements."""
if not self.requirements:
return
ret = os.spawnl(os.P_WAIT, sys.executable, 'python', '-m', 'pip',
'install', *self.requirements)
if ret != 0:
sys.exit(ret)
def main() -> None:
"""Command line entry point."""
parser = argparse.ArgumentParser(description=__doc__)
parser.add_argument('--no-act', '-n',
action='store_true',
help="Don't act, just print what will be done")
parser.add_argument('files', nargs='*', metavar='FILE',
help="Requirement files"
"(default: requirements.txt in the script's directory)")
options = parser.parse_args()
if not options.files:
options.files = [os.path.join(os.path.dirname(__file__),
'ci.requirements.txt')]
reqs = Requirements()
for filename in options.files:
reqs.add_file(filename)
reqs.write(sys.stdout)
if not options.no_act:
reqs.install()
if __name__ == '__main__':
main()