68 lines
1.4 KiB
Python
68 lines
1.4 KiB
Python
#!/usr/bin/env python3
|
|
"""
|
|
Compute content hash of a git repository.
|
|
|
|
Hashes all tracked files (respects .gitignore) in sorted order.
|
|
"""
|
|
|
|
import hashlib
|
|
import subprocess
|
|
import sys
|
|
from pathlib import Path
|
|
|
|
|
|
def repo_hash(repo_path: Path) -> str:
|
|
"""
|
|
Compute SHA3-256 hash of all tracked files in a repo.
|
|
|
|
Uses git ls-files to respect .gitignore.
|
|
Files are hashed in sorted order for determinism.
|
|
Each file contributes: relative_path + file_contents
|
|
"""
|
|
# Get list of tracked files
|
|
result = subprocess.run(
|
|
["git", "ls-files"],
|
|
cwd=repo_path,
|
|
capture_output=True,
|
|
text=True,
|
|
check=True,
|
|
)
|
|
|
|
files = sorted(result.stdout.strip().split("\n"))
|
|
|
|
hasher = hashlib.sha3_256()
|
|
|
|
for rel_path in files:
|
|
if not rel_path:
|
|
continue
|
|
|
|
file_path = repo_path / rel_path
|
|
if not file_path.is_file():
|
|
continue
|
|
|
|
# Include path in hash
|
|
hasher.update(rel_path.encode())
|
|
|
|
# Include contents
|
|
with open(file_path, "rb") as f:
|
|
for chunk in iter(lambda: f.read(65536), b""):
|
|
hasher.update(chunk)
|
|
|
|
return hasher.hexdigest()
|
|
|
|
|
|
def main():
|
|
if len(sys.argv) > 1:
|
|
repo_path = Path(sys.argv[1])
|
|
else:
|
|
repo_path = Path.cwd()
|
|
|
|
h = repo_hash(repo_path)
|
|
print(f"Repository: {repo_path}")
|
|
print(f"Hash: {h}")
|
|
return h
|
|
|
|
|
|
if __name__ == "__main__":
|
|
main()
|