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venv/Lib/site-packages/fontTools/misc/timeTools.py

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+"""fontTools.misc.timeTools.py -- tools for working with OpenType timestamps.
+"""
+
+import os
+import time
+from datetime import datetime, timezone
+import calendar
+
+
+epoch_diff = calendar.timegm((1904, 1, 1, 0, 0, 0, 0, 0, 0))
+
+DAYNAMES = ["Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun"]
+MONTHNAMES = [None, "Jan", "Feb", "Mar", "Apr", "May", "Jun",
+			  "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"]
+
+
+def asctime(t=None):
+	"""
+	Convert a tuple or struct_time representing a time as returned by gmtime()
+	or localtime() to a 24-character string of the following form:
+
+	>>> asctime(time.gmtime(0))
+	'Thu Jan  1 00:00:00 1970'
+
+	If t is not provided, the current time as returned by localtime() is used.
+	Locale information is not used by asctime().
+
+	This is meant to normalise the output of the built-in time.asctime() across
+	different platforms and Python versions.
+	In Python 3.x, the day of the month is right-justified, whereas on Windows
+	Python 2.7 it is padded with zeros.
+
+	See https://github.com/fonttools/fonttools/issues/455
+	"""
+	if t is None:
+		t = time.localtime()
+	s = "%s %s %2s %s" % (
+		DAYNAMES[t.tm_wday], MONTHNAMES[t.tm_mon], t.tm_mday,
+		time.strftime("%H:%M:%S %Y", t))
+	return s
+
+
+def timestampToString(value):
+	return asctime(time.gmtime(max(0, value + epoch_diff)))
+
+def timestampFromString(value):
+	wkday, mnth = value[:7].split()
+	t = datetime.strptime(value[7:], ' %d %H:%M:%S %Y')
+	t = t.replace(month=MONTHNAMES.index(mnth), tzinfo=timezone.utc)
+	wkday_idx = DAYNAMES.index(wkday)
+	assert t.weekday() == wkday_idx, '"' + value + '" has inconsistent weekday'
+	return int(t.timestamp()) - epoch_diff
+
+def timestampNow():
+	# https://reproducible-builds.org/specs/source-date-epoch/
+	source_date_epoch = os.environ.get("SOURCE_DATE_EPOCH")
+	if source_date_epoch is not None:
+		return int(source_date_epoch) - epoch_diff
+	return int(time.time() - epoch_diff)
+
+def timestampSinceEpoch(value):
+	return int(value - epoch_diff)
+
+
+if __name__ == "__main__":
+	import sys
+	import doctest
+	sys.exit(doctest.testmod().failed)