4b3a2eb1d9
For reproducible builds, check the presence of SOURCE_DATE_EPOCH environment variable and use it for the time stamp. This affects the head.modified (and head.created in merge.py). See https://reproducible-builds.org/specs/source-date-epoch/
65 lines
1.8 KiB
Python
65 lines
1.8 KiB
Python
"""fontTools.misc.timeTools.py -- tools for working with OpenType timestamps.
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"""
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from __future__ import print_function, division, absolute_import
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from fontTools.misc.py23 import *
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import os
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import time
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import calendar
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epoch_diff = calendar.timegm((1904, 1, 1, 0, 0, 0, 0, 0, 0))
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DAYNAMES = ["Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun"]
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MONTHNAMES = [None, "Jan", "Feb", "Mar", "Apr", "May", "Jun",
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"Jul", "Aug", "Sep", "Oct", "Nov", "Dec"]
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def asctime(t=None):
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"""
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Convert a tuple or struct_time representing a time as returned by gmtime()
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or localtime() to a 24-character string of the following form:
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>>> asctime(time.gmtime(0))
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'Thu Jan 1 00:00:00 1970'
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If t is not provided, the current time as returned by localtime() is used.
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Locale information is not used by asctime().
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This is meant to normalise the output of the built-in time.asctime() across
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different platforms and Python versions.
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In Python 3.x, the day of the month is right-justified, whereas on Windows
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Python 2.7 it is padded with zeros.
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See https://github.com/behdad/fonttools/issues/455
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"""
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if t is None:
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t = time.localtime()
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s = "%s %s %2s %s" % (
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DAYNAMES[t.tm_wday], MONTHNAMES[t.tm_mon], t.tm_mday,
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time.strftime("%H:%M:%S %Y", t))
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return s
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def timestampToString(value):
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return asctime(time.gmtime(max(0, value + epoch_diff)))
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def timestampFromString(value):
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return calendar.timegm(time.strptime(value)) - epoch_diff
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def timestampNow():
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# https://reproducible-builds.org/specs/source-date-epoch/
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source_date_epoch = os.environ.get("SOURCE_DATE_EPOCH")
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if source_date_epoch is not None:
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return int(source_date_epoch) - epoch_diff
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return int(time.time() - epoch_diff)
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def timestampSinceEpoch(value):
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return int(value - epoch_diff)
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if __name__ == "__main__":
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import sys
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import doctest
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sys.exit(doctest.testmod().failed)
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