Matteo Benedetto
090005f6b9
Reimplementazione fedele di cellar-cli.py (enne2/cellar @ f5216b1) in C99 POSIX.1-2008, mono-thread, senza dipendenze esterne: miniz e' vendored per deflate/inflate raw, mentre contenitore gzip, multipart/form-data in streaming, tar PAX/ustar, JSON e client HTTP/1.1 sono scritti a mano. - 7 comandi (list, upload, download, install, scan-local, wizard-upload, wizard-install) con stdout/stderr/exit code identici al client Python - 30/30 test di parita' (tests/parity_test.sh) contro due server mock indipendenti: output a confronto, alberi installati, interop tar con tarfile di Python e con GNU tar, archivio C equivalente a quello Python - build statiche x86-64 / i686 / aarch64: nessun simbolo GLIBC richiesto, nessuna syscall moderna (statx/openat2/memfd_create/getrandom), LFS 64 bit, resolver DNS di riserva (hosts + query UDP) per glibc statica senza NSS - miglioramento rispetto all'originale: upload multipart in streaming invece di leggere l'intero archivio in RAM - divergenze volute documentate nel README (help piu' sintetico, mtime dei symlink non ripristinato come tarfile, EOF nei prompt, niente TLS) Build: make | make 32 | make arm64 | make test | make verify
67 lines
1.9 KiB
Python
Executable File
67 lines
1.9 KiB
Python
Executable File
#!/usr/bin/env python3
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"""Confronta due archivi tar.gz membro per membro (parita' writer C vs Python).
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Uso: tar_compare.py a.tar.gz b.tar.gz [--tolerance 1e-6]
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"""
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from __future__ import annotations
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import argparse
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import hashlib
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import sys
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import tarfile
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def load(path: str):
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out = {}
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with tarfile.open(path, "r:gz") as tf:
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for m in tf.getmembers():
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digest = "-"
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if m.isreg():
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fh = tf.extractfile(m)
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if fh is not None:
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digest = hashlib.sha256(fh.read()).hexdigest()
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out[m.name] = {
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"type": m.type.decode() if isinstance(m.type, bytes) else m.type,
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"mode": m.mode,
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"uid": m.uid,
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"gid": m.gid,
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"size": m.size,
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"link": m.linkname,
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"mtime": m.mtime,
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"sha": digest,
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}
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return out
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def main() -> int:
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ap = argparse.ArgumentParser()
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ap.add_argument("a")
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ap.add_argument("b")
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ap.add_argument("--tolerance", type=float, default=1e-6)
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args = ap.parse_args()
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a, b = load(args.a), load(args.b)
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ok = True
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for name in sorted(set(a) | set(b)):
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if name not in a:
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print(f"SOLO IN B: {name}")
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ok = False
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continue
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if name not in b:
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print(f"SOLO IN A: {name}")
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ok = False
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continue
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x, y = a[name], b[name]
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for field in ("type", "mode", "uid", "gid", "size", "link", "sha"):
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if x[field] != y[field]:
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print(f"DIFF {name}: {field} A={x[field]!r} B={y[field]!r}")
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ok = False
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if abs(x["mtime"] - y["mtime"]) > args.tolerance:
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print(f"DIFF {name}: mtime A={x['mtime']:.7f} B={y['mtime']:.7f}")
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ok = False
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print("archivi equivalenti" if ok else "archivi DIVERSI")
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return 0 if ok else 1
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if __name__ == "__main__":
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raise SystemExit(main())
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