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Code Issues Releases Activity

Record parsing

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This commit is contained in:
Romein van Buren
2025-06-22 19:14:22 +02:00
parent d22b209ca5
commit 7cf3fd93ac
6 changed files with 232 additions and 168 deletions
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26
fmp/fmp_sector.go
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@ -70,7 +70,7 @@ func (sect *FmpSector) processChunks(dict *FmpDict) error {
for _, chunk := range sect.Chunks {
switch chunk.Type {
case FmpChunkPathPush, FmpChunkPathPushLong:
currentPath = append(currentPath, parseVarUint64(chunk.Value))
currentPath = append(currentPath, decodeVarUint64(chunk.Value))
dumpPath(currentPath)
case FmpChunkPathPop:
@ -134,7 +134,7 @@ func (sect *FmpSector) readChunk(payload []byte) (*FmpChunk, error) {
chunk.Value = payload[3:chunk.Length]
case 0x07:
valueLength := parseVarUint64(payload[2 : 2+2])
valueLength := decodeVarUint64(payload[2 : 2+2])
chunk.Length = min(4+valueLength, uint64(len(payload)))
chunk.Type = FmpChunkSegmentedData
chunk.Index = uint64(payload[1])
@ -148,13 +148,13 @@ func (sect *FmpSector) readChunk(payload []byte) (*FmpChunk, error) {
case 0x09:
chunk.Length = 4
chunk.Type = FmpChunkSimpleKeyValue
chunk.Key = parseVarUint64(payload[1 : 1+2])
chunk.Key = decodeVarUint64(payload[1 : 1+2])
chunk.Value = payload[3:chunk.Length]
case 0x0A, 0x0B, 0x0C, 0x0D:
chunk.Length = 3 + 2*uint64(chunkCode-0x09)
chunk.Type = FmpChunkSimpleKeyValue
chunk.Key = parseVarUint64(payload[1 : 1+2])
chunk.Key = decodeVarUint64(payload[1 : 1+2])
chunk.Value = payload[3:chunk.Length]
case 0x0E:
@ -167,17 +167,17 @@ func (sect *FmpSector) readChunk(payload []byte) (*FmpChunk, error) {
chunk.Length = 4 + uint64(payload[3])
chunk.Type = FmpChunkSimpleKeyValue
chunk.Key = parseVarUint64(payload[1 : 1+2])
chunk.Key = decodeVarUint64(payload[1 : 1+2])
chunk.Value = payload[4:chunk.Length]
case 0x0F:
valueLength := parseVarUint64(payload[3 : 3+2])
valueLength := decodeVarUint64(payload[3 : 3+2])
chunk.Length = uint64(len(payload))
if chunk.Length > 5+valueLength {
return nil, ErrBadChunk
}
chunk.Type = FmpChunkSegmentedData
chunk.Index = parseVarUint64(payload[1 : 1+2])
chunk.Index = decodeVarUint64(payload[1 : 1+2])
chunk.Value = payload[5:chunk.Length]
case 0x10, 0x11:
@ -193,13 +193,13 @@ func (sect *FmpSector) readChunk(payload []byte) (*FmpChunk, error) {
case 0x16:
chunk.Length = 5 + uint64(payload[4])
chunk.Type = FmpChunkLongKeyValue
chunk.Key = parseVarUint64(payload[1 : 1+3])
chunk.Key = decodeVarUint64(payload[1 : 1+3])
chunk.Value = payload[5:chunk.Length]
case 0x17:
chunk.Length = 6 + parseVarUint64(payload[4:4+2])
chunk.Length = 6 + decodeVarUint64(payload[4:4+2])
chunk.Type = FmpChunkLongKeyValue
chunk.Key = parseVarUint64(payload[1 : 1+3])
chunk.Key = decodeVarUint64(payload[1 : 1+3])
chunk.Value = payload[6:chunk.Length]
case 0x19, 0x1A, 0x1B, 0x1C, 0x1D:
@ -213,15 +213,15 @@ func (sect *FmpSector) readChunk(payload []byte) (*FmpChunk, error) {
valueLength := uint64(payload[2+keyLength])
chunk.Length = 2 + keyLength + 1 + valueLength
chunk.Type = FmpChunkLongKeyValue
chunk.Key = parseVarUint64(payload[2 : 2+keyLength])
chunk.Key = decodeVarUint64(payload[2 : 2+keyLength])
chunk.Value = payload[2+keyLength+1 : chunk.Length]
case 0x1F:
keyLength := uint64(payload[1])
valueLength := parseVarUint64(payload[2+keyLength : 2+keyLength+2+1])
valueLength := decodeVarUint64(payload[2+keyLength : 2+keyLength+2+1])
chunk.Length = 2 + keyLength + 2 + valueLength
chunk.Type = FmpChunkLongKeyValue
chunk.Key = parseVarUint64(payload[2 : 2+keyLength])
chunk.Key = decodeVarUint64(payload[2 : 2+keyLength])
chunk.Value = payload[2+keyLength+2 : chunk.Length]
case 0x20, 0xE0: