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#!/usr/bin/env python3
"""Create a role archive which overwrites an arbitrary file."""
from __future__ import annotations
import argparse
import os
import pathlib
import tarfile
import tempfile
def main() -> None:
parser = argparse.ArgumentParser(description=__doc__)
parser.add_argument('archive', type=pathlib.Path, help='archive to create')
parser.add_argument('content', type=pathlib.Path, help='content to write')
parser.add_argument('target', type=pathlib.Path, help='file to overwrite')
args = parser.parse_args()
create_archive(args.archive, args.content, args.target)
def generate_files_from_path(path):
if os.path.isdir(path):
for subpath in os.listdir(path):
_path = os.path.join(path, subpath)
yield from generate_files_from_path(_path)
elif os.path.isfile(path):
yield pathlib.Path(path)
def create_archive(archive_path: pathlib.Path, content_path: pathlib.Path, target_path: pathlib.Path) -> None:
with (
tarfile.open(name=archive_path, mode='w') as role_archive,
tempfile.TemporaryDirectory() as temp_dir_name,
):
temp_dir_path = pathlib.Path(temp_dir_name)
meta_main_path = temp_dir_path / 'meta' / 'main.yml'
meta_main_path.parent.mkdir()
meta_main_path.write_text('')
symlink_path = temp_dir_path / 'symlink'
symlink_path.symlink_to(target_path)
role_archive.add(meta_main_path)
role_archive.add(symlink_path)
for path in generate_files_from_path(content_path):
if path == content_path:
arcname = str(symlink_path)
else:
arcname = os.path.join(temp_dir_path, path)
content_tarinfo = role_archive.gettarinfo(path, arcname)
with path.open('rb') as file_content:
role_archive.addfile(content_tarinfo, file_content)
if __name__ == '__main__':
main()
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