mirror of https://github.com/moparisthebest/xeps
72 lines
1.7 KiB
Python
72 lines
1.7 KiB
Python
#!/usr/bin/python3
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import os
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import pathlib
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import subprocess
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import time
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def parse_timestamp_line(s: str):
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author_ts, committer_ts = s.split(" ", 1)
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return max(int(author_ts), int(committer_ts))
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def restore_commit_timestamps(basedir: pathlib.Path):
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env = dict(os.environ)
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env["LANG"] = "C.UTF-8"
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# NOTE: the build image is still only on Python 3.4 because texml and stuff
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# so we cannot use encoding= here and have to do decoding ourselves.
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proc = subprocess.Popen(
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[
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"git", "log", "--pretty=%at %ct", "--name-status",
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],
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stdout=subprocess.PIPE,
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env=env,
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)
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seen = set()
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last_timestamp = None
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for line in proc.stdout:
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if not line:
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continue
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if not line.endswith(b"\n"):
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raise ValueError("line not terminated")
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line = line[:-1].decode("utf-8")
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if not line:
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continue
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try:
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timestamp = parse_timestamp_line(line)
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except ValueError:
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pass
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else:
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last_timestamp = timestamp
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continue
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_, filename = line.split("\t", 1)
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if filename in seen:
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continue
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seen.add(filename)
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filepath = basedir / filename
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try:
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os.utime(str(filepath), (last_timestamp, last_timestamp))
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except FileNotFoundError:
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pass
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def main():
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basedir = pathlib.Path.cwd()
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t0 = time.monotonic()
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try:
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restore_commit_timestamps(basedir)
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finally:
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t1 = time.monotonic()
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print("timestamp restoration took {:.2f}s".format(t1-t0))
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return 0
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if __name__ == "__main__":
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import sys
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sys.exit(main() or 0)
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