2019-09-21 16:11:55 +02:00

13 lines
536 B
JavaScript

// Dates in zip file entries are stored as DosDateTime
// Spec is here: https://docs.microsoft.com/en-us/windows/win32/api/winbase/nf-winbase-dosdatetimetofiletime
module.exports = function parseDateTime(date, time) {
const day = date & 0x1F;
const month = date >> 5 & 0x0F;
const year = (date >> 9 & 0x7F) + 1980;
const seconds = time ? (time & 0x1F) * 2 : 0;
const minutes = time ? (time >> 5) & 0x3F : 0;
const hours = time ? (time >> 11): 0;
return new Date(Date.UTC(year, month-1, day, hours, minutes, seconds));
};