mirror of
https://github.com/RGBCube/serenity
synced 2025-10-31 10:42:45 +00:00
67 lines
2.1 KiB
Python
67 lines
2.1 KiB
Python
#!/usr/bin/env python3
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r"""Downloads a file as a build artifact.
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The file is downloaded to the specified directory.
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It's intended to be used for files that are cached between runs.
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"""
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import argparse
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import os
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import pathlib
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import shutil
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import sys
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import tempfile
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import urllib.request
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def main():
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parser = argparse.ArgumentParser(
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epilog=__doc__,
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formatter_class=argparse.RawDescriptionHelpFormatter)
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parser.add_argument('url', help='input url')
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parser.add_argument('-o', '--output', required=True,
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help='output file')
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parser.add_argument('-v', '--version', required=True,
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help='version of file to detect mismatches and redownload')
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parser.add_argument('-f', '--version-file', required=True,
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help='filesystem location to cache version')
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parser.add_argument('-c', "--cache-path", required=False,
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help='path for cached files to clear on version mismatch')
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args = parser.parse_args()
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version_from_file = ''
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version_file = pathlib.Path(args.version_file)
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if version_file.exists():
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with version_file.open('r') as f:
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version_from_file = f.readline().strip()
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if version_from_file == args.version:
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return 0
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# Fresh build or version mismatch, delete old cache
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if (args.cache_path):
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cache_path = pathlib.Path(args.cache_path)
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shutil.rmtree(cache_path, ignore_errors=True)
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cache_path.mkdir(parents=True)
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print(f"Downloading version {args.version} of {args.output}...", end='')
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with urllib.request.urlopen(args.url) as f:
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try:
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with tempfile.NamedTemporaryFile(delete=False,
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dir=pathlib.Path(args.output).parent) as out:
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out.write(f.read())
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os.rename(out.name, args.output)
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except IOError:
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os.unlink(out.name)
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print("done")
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with open(version_file, 'w') as f:
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f.write(args.version)
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if __name__ == '__main__':
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sys.exit(main())
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