Digital Drosophila Archive
21 lines
804 B
Python
21 lines
804 B
Python
#!/usr/bin/env python3
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"""Seal currently staged file bytes into a new SHA-256 file; no scientific writes."""
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import hashlib
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from pathlib import Path
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import subprocess
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root = Path.cwd()
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target = root/"registry/repository-files.sha256"
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if target.exists():
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raise RuntimeError("Refusing to overwrite repository seal")
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lines = []
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for name in sorted(filter(None, subprocess.check_output(["git","ls-files","-z"]).decode().split("\0"))):
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blob = subprocess.check_output(["git","show",":"+name])
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actual = (root/name).read_bytes()
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if blob != actual:
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raise RuntimeError("Staged/worktree bytes differ: "+name)
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lines.append(hashlib.sha256(blob).hexdigest()+" "+name+"\n")
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with target.open("x",encoding="utf-8",newline="\n") as f:
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f.writelines(lines)
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print("sealed files:",len(lines))
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