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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) | |