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fq/format/zip/testdata/help_zip.fqtest

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doc,help: Nicer format help and move help tests into each format Also add authors to avro and macho decoders Generated with: for i in $(go run . -r -n '_registry | [([([.files[][].name | split(".")[0]] | unique[]), (.formats[].name)] | count[] | select(.[1] == 2)[0]), (.formats[] | select(.decode_in_arg).name)] | unique[]'); do DIR=$(dirname $(find format -name $i.go)); echo "$ fq -h $i" > "$DIR/testdata/help_$i.fqtest" ; done
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$ fq -h zip
zip: ZIP archive decoder
Options
=======
uncompress=true Uncompress and probe files
Decode examples
===============
# Decode file as zip
$ fq -d zip . file
# Decode value as zip
... | zip
# Decode file using zip options
$ fq -d zip -o uncompress=true . file
# Decode value as zip
... | zip({uncompress:true})
Supports ZIP64.
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
2023-10-21 19:11:56 +03:00
Timestamp and time zones
========================
The timestamp accessed via .local_files[].last_modification is encoded in ZIP files using MS-DOS representation
(https://learn.microsoft.com/en-us/windows/win32/api/oleauto/nf-oleauto-dosdatetimetovarianttime) 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.
doc,help: Nicer format help and move help tests into each format Also add authors to avro and macho decoders Generated with: for i in $(go run . -r -n '_registry | [([([.files[][].name | split(".")[0]] | unique[]), (.formats[].name)] | count[] | select(.[1] == 2)[0]), (.formats[] | select(.decode_in_arg).name)] | unique[]'); do DIR=$(dirname $(find format -name $i.go)); echo "$ fq -h $i" > "$DIR/testdata/help_$i.fqtest" ; done
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References
==========
- https://pkware.cachefly.net/webdocs/casestudies/APPNOTE.TXT
- https://opensource.apple.com/source/zip/zip-6/unzip/unzip/proginfo/extra.fld
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
2023-10-21 19:11:56 +03:00
- https://formats.kaitai.io/dos_datetime/
- https://learn.microsoft.com/en-us/windows/win32/api/oleauto/nf-oleauto-dosdatetimetovarianttime
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