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0bcd139 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 | #!/usr/bin/env python3
"""Write JSON only when semantic content changes (ignore generated_at_utc churn)."""
from __future__ import annotations
import json
from copy import deepcopy
from pathlib import Path
def _strip_volatile(obj: dict) -> dict:
data = deepcopy(obj)
data.pop("generated_at_utc", None)
data.pop("fetched", None) # fetch stamp string can churn; keep in FETCHED_AT.txt
return data
def write_json_stable(path: Path, data: dict, *, indent: int = 2) -> bool:
"""Return True if file was written/changed."""
path.parent.mkdir(parents=True, exist_ok=True)
text = json.dumps(data, indent=indent) + "\n"
if path.exists():
try:
old = json.loads(path.read_text())
if _strip_volatile(old) == _strip_volatile(data):
return False
except (json.JSONDecodeError, OSError):
pass
path.write_text(text)
return True
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