Re-write data fullreader & reader

Moved directory and the rest of the inodes to manual decoding
This commit is contained in:
Caleb Gardner
2025-06-06 06:37:39 -05:00
parent f32cb520dc
commit 3378651686
9 changed files with 200 additions and 412 deletions
+28 -17
View File
@@ -14,21 +14,6 @@ type File struct {
BlockSizes []uint32
}
type eFileInit struct {
BlockStart uint64
Size uint64
Sparse uint64
LinkCount uint32
FragInd uint32
FragOffset uint32
XattrInd uint32
}
type EFile struct {
eFileInit
BlockSizes []uint32
}
func ReadFile(r io.Reader, blockSize uint32) (f File, err error) {
dat := make([]byte, 16)
_, err = r.Read(dat)
@@ -55,16 +40,42 @@ func ReadFile(r io.Reader, blockSize uint32) (f File, err error) {
return
}
type EFile struct {
BlockStart uint64
Size uint64
Sparse uint64
LinkCount uint32
FragInd uint32
FragOffset uint32
XattrInd uint32
BlockSizes []uint32
}
func ReadEFile(r io.Reader, blockSize uint32) (f EFile, err error) {
err = binary.Read(r, binary.LittleEndian, &f.eFileInit)
dat := make([]byte, 40)
_, err = r.Read(dat)
if err != nil {
return
}
f.BlockStart = binary.LittleEndian.Uint64(dat)
f.Size = binary.LittleEndian.Uint64(dat[8:])
f.Sparse = binary.LittleEndian.Uint64(dat[16:])
f.LinkCount = binary.LittleEndian.Uint32(dat[24:])
f.FragInd = binary.LittleEndian.Uint32(dat[28:])
f.FragOffset = binary.LittleEndian.Uint32(dat[32:])
f.XattrInd = binary.LittleEndian.Uint32(dat[36:])
toRead := int(math.Floor(float64(f.Size) / float64(blockSize)))
if f.FragInd == 0xFFFFFFFF && f.Size%uint64(blockSize) > 0 {
toRead++
}
dat = make([]byte, toRead*4)
_, err = r.Read(dat)
if err != nil {
return
}
f.BlockSizes = make([]uint32, toRead)
err = binary.Read(r, binary.LittleEndian, &f.BlockSizes)
for i := range toRead {
f.BlockSizes[i] = binary.LittleEndian.Uint32(dat[i*4:])
}
return
}