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#!/usr/bin/env python3
import argparse
import os.path
import shutil
import subprocess
import tarfile
import tempfile
from typing import Optional
from typing import Sequence
# This is a script for generating the tarred resources for git repo
# dependencies. Currently it's just for "vendoring" ruby support packages.
REPOS = (
('rbenv', 'git://github.com/rbenv/rbenv', '0843745'),
('ruby-build', 'git://github.com/rbenv/ruby-build', '500863c'),
(
'ruby-download',
'git://github.com/garnieretienne/rvm-download',
'09bd7c6',
),
)
def make_archive(name: str, repo: str, ref: str, destdir: str) -> str:
"""Makes an archive of a repository in the given destdir.
:param text name: Name to give the archive. For instance foo. The file
that is created will be called foo.tar.gz.
:param text repo: Repository to clone.
:param text ref: Tag/SHA/branch to check out.
:param text destdir: Directory to place archives in.
"""
output_path = os.path.join(destdir, f'{name}.tar.gz')
with tempfile.TemporaryDirectory() as tmpdir:
# this ensures that the root directory has umask permissions
gitdir = os.path.join(tmpdir, 'root')
# Clone the repository to the temporary directory
subprocess.check_call(('git', 'clone', repo, gitdir))
subprocess.check_call(('git', '-C', gitdir, 'checkout', ref))
# We don't want the '.git' directory
# It adds a bunch of size to the archive and we don't use it at
# runtime
shutil.rmtree(os.path.join(gitdir, '.git'))
with tarfile.open(output_path, 'w|gz') as tf:
tf.add(gitdir, name)
return output_path
def main(argv: Optional[Sequence[str]] = None) -> int:
parser = argparse.ArgumentParser()
parser.add_argument('--dest', default='pre_commit/resources')
args = parser.parse_args(argv)
for archive_name, repo, ref in REPOS:
print(f'Making {archive_name}.tar.gz for {repo}@{ref}')
make_archive(archive_name, repo, ref, args.dest)
return 0
if __name__ == '__main__':
exit(main())
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