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decode: apple_bookmark: simplifies flag decoding

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This commit is contained in:
David McDonald 2022-12-08 01:47:00 -06:00
parent a162e07b76
commit 330d5f7f28
1 changed files with 4 additions and 20 deletions
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24
format/applebookmark/apple_bookmark.go
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@ -150,22 +150,12 @@ func decodeFlagDataObject(d *decode.D, flagFn func(d *decode.D)) {
d.FieldU32("length", d.AssertU(dataObjectLen))
d.FieldU32("raw_type", dataTypeMap, d.AssertU(dataTypeData))
d.FieldValueStr("type", "flag_data")
decodePropertyFlags(d, flagFn)
d.FieldStruct("property_flags", flagFn)
d.FieldStruct("enabled_property_flags", flagFn)
d.FieldRawLen("reserved", 64)
})
}
type dataObjectDecoder struct {
flagFn func(d *decode.D)
}
func (dod *dataObjectDecoder) decode(d *decode.D) {
decodeFlagDataObject(d, dod.flagFn)
}
var resourcePropDecoder = &dataObjectDecoder{decodeTgtPropertyFlagBits}
var volumePropDecoder = &dataObjectDecoder{decodeVolPropertyFlagBits}
func decodeTgtPropertyFlagBits(d *decode.D) {
start := d.Pos()
d.FieldBool("is_hidden")
@ -251,12 +241,6 @@ func decodeVolPropertyFlagBits(d *decode.D) {
d.FieldBool("supports_volume_sizes")
}
func decodePropertyFlags(d *decode.D, bitFn func(d *decode.D)) {
d.FieldStruct("property_flags", bitFn)
d.FieldStruct("enabled_property_flags", bitFn)
}
var cocoaTimeEpochDate = time.Date(2001, time.January, 1, 0, 0, 0, 0, time.UTC)
type tocHeader struct {
@ -286,9 +270,9 @@ func (hdr *tocHeader) decodeEntries(d *decode.D) {
switch entry.key {
case elementTypeTargetFlags:
d.SeekAbs(entry.recordOffset, resourcePropDecoder.decode)
d.SeekAbs(entry.recordOffset, func(d *decode.D) { decodeFlagDataObject(d, decodeTgtPropertyFlagBits) })
case elementTypeVolumeFlags:
d.SeekAbs(entry.recordOffset, volumePropDecoder.decode)
d.SeekAbs(entry.recordOffset, func(d *decode.D) { decodeFlagDataObject(d, decodeVolPropertyFlagBits) })
default:
d.SeekAbs(entry.recordOffset, makeDecodeRecord())
}