ToolboxToolbox/macdate.py
2021-10-04 10:16:30 +08:00

64 lines
1.5 KiB
Python
Executable File

#!/usr/bin/env python3
import sys
from datetime import datetime, timedelta
# Copied from machfs MakeHFS
def hfsdat(x):
if x.lower() == "now":
x = datetime.now().isoformat()
if len(x) == 8 and all(c in "0123456789ABCDEF" for c in x.upper()):
try:
return int(x, base=16)
except ValueError:
pass
epoch = "19040101000000" # ISO8601 with the non-numerics stripped
# strip non-numerics and pad out using the epoch (cheeky)
stripped = "".join(c for c in x if c in "0123456789")
stripped = stripped[: len(epoch)] + epoch[len(stripped) :]
tformat = "%Y%m%d%H%M%S"
delta = datetime.strptime(stripped, tformat) - datetime.strptime(epoch, tformat)
delta = int(delta.total_seconds())
if not 0 <= delta <= 0xFFFFFFFF:
print("Warning: moving %r into the legacy MacOS date range (1904-2040)" % x)
delta = min(delta, 0xFFFFFFFF)
delta = max(delta, 0)
return delta
# Copied from ExtractBinDates.py
def macdatestr(srcint):
dt = datetime(1904, 1, 1) + timedelta(seconds=srcint)
st = dt.isoformat()
st = st.replace("T", " ")
return st
def secs2date(secs):
print(f"${secs:08x} = {macdatestr(secs)}")
def date2secs(date):
secs = hfsdat(date)
print(f"{macdatestr(secs)} = ${secs:08x}")
for a in sys.argv[1:]:
if a.startswith("$"):
secs = int(a[1:], 16)
secs2date(secs)
elif a.startswith("0x"):
secs = int(a[2:], 16)
secs2date(secs)
else:
date2secs(a)