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"""fontTools.misc.timeTools.py -- tools for working with OpenType timestamps. |
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""" |
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import os |
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import time |
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from datetime import datetime, timezone |
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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 = [ |
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None, |
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"Jan", |
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"Feb", |
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"Mar", |
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"Apr", |
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"May", |
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"Jun", |
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"Jul", |
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"Aug", |
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"Sep", |
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"Oct", |
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"Nov", |
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"Dec", |
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] |
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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/fonttools/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], |
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MONTHNAMES[t.tm_mon], |
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t.tm_mday, |
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time.strftime("%H:%M:%S %Y", t), |
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) |
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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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wkday, mnth = value[:7].split() |
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t = datetime.strptime(value[7:], " %d %H:%M:%S %Y") |
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t = t.replace(month=MONTHNAMES.index(mnth), tzinfo=timezone.utc) |
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wkday_idx = DAYNAMES.index(wkday) |
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assert t.weekday() == wkday_idx, '"' + value + '" has inconsistent weekday' |
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return int(t.timestamp()) - epoch_diff |
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def timestampNow(): |
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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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