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fq/format/zip/zip.md
Mattias Wadman a83cac6021 zip: Fix incorrect time/date, add extended timestamp and refactor
MSDOS time/date was read in wrong order and also did not take into account
that the bit ranges in the shortis are in little-endian.

Remodel modification_time/date to be one struct with fat_time, fat_date LE shorts
and then synthetic values for day, hours, minute etc and also a unix field with the
timestamp as unix time.

Also refactor and clenaup extra fields/extended code a bit.

Fixes #792
2023-10-23 11:11:27 +02:00

745 B

Supports ZIP64.

Timestamp and time zones

The timestamp accessed via .local_files[].last_modification is encoded in ZIP files using MS-DOS representation which lacks a known time zone. Probably the local time/date was used at creation. The unix_guess field in last_modification is a guess assuming the local time zone was UTC at creation.

References