func cmdNbt(args []string) (err error) {
if len(args) != 1 {
os.Stderr.WriteString("usage: " + os.Args[0] + " nbt <NBT file path>\n")
return
}
file, err := os.Open(args[0])
if err != nil {
return
}
defer file.Close()
gzipReader, err := gzip.NewReader(file)
if err != nil {
return
}
defer gzipReader.Close()
namedTag, err := nbt.Read(gzipReader)
if err != nil {
return
}
displayNbt(1, namedTag)
return
}
// Load a chunk from its NBT representation
func newNbtChunkReader(reader io.Reader) (r *nbtChunkReader, err error) {
chunkTag, err := nbt.Read(reader)
if err != nil {
return
}
r = &nbtChunkReader{
chunkTag: chunkTag,
}
return
}
func (is *ItemSlot) MinecraftUnmarshal(reader io.Reader, ps *PacketSerializer) error {
typeIdUint16, err := ps.readUint16(reader)
if err != nil {
return err
}
is.ItemTypeId = ItemTypeId(typeIdUint16)
if is.ItemTypeId == -1 {
is.Count = 0
is.Data = 0
} else {
countUint8, err := ps.readUint8(reader)
if err != nil {
return err
}
dataUint16, err := ps.readUint16(reader)
if err != nil {
return err
}
is.Count = ItemCount(countUint8)
is.Data = ItemData(dataUint16)
if _, requiresNbt := nbtItemIds[is.ItemTypeId]; requiresNbt {
// Read NBT data.
lUint16, err := ps.readUint16(reader)
if err != nil {
return err
}
lInt16 := int16(lUint16)
if lInt16 < 0 {
return nil
}
zReader, err := gzip.NewReader(&io.LimitedReader{reader, int64(lInt16)})
if err != nil {
return err
}
err = zReader.Close()
if err != nil {
return err
}
is.Nbt, err = nbt.Read(zReader)
if err != nil {
return err
}
}
}
return nil
}
func loadLevelData(worldPath string) (levelData nbt.ITag, err error) {
filename := path.Join(worldPath, "level.dat")
file, err := os.Open(filename)
if err != nil {
return
}
defer file.Close()
gzipReader, err := gzip.NewReader(file)
if err != nil {
return
}
defer gzipReader.Close()
levelData, err = nbt.Read(gzipReader)
return
}
// Load a chunk from its NBT representation
func loadChunk(reader io.Reader) (chunk *Chunk, err os.Error) {
level, err := nbt.Read(reader)
if err != nil {
return
}
chunk = &Chunk{
X: ChunkCoord(level.Lookup("/Level/xPos").(*nbt.Int).Value),
Z: ChunkCoord(level.Lookup("/Level/zPos").(*nbt.Int).Value),
Blocks: level.Lookup("/Level/Blocks").(*nbt.ByteArray).Value,
BlockData: level.Lookup("/Level/Data").(*nbt.ByteArray).Value,
SkyLight: level.Lookup("/Level/SkyLight").(*nbt.ByteArray).Value,
BlockLight: level.Lookup("/Level/BlockLight").(*nbt.ByteArray).Value,
HeightMap: level.Lookup("/Level/HeightMap").(*nbt.ByteArray).Value,
players: make(map[EntityID]*Player),
}
return
}
func loadStartPosition(worldPath string) {
file, err := os.Open(path.Join(worldPath, "level.dat"), os.O_RDONLY, 0)
if err != nil {
log.Exit("loadStartPosition: ", err.String())
}
level, err := nbt.Read(file)
file.Close()
if err != nil {
log.Exit("loadStartPosition: ", err.String())
}
pos := level.Lookup("/Data/Player/Pos")
StartPosition = XYZ{
pos.(*nbt.List).Value[0].(*nbt.Double).Value,
pos.(*nbt.List).Value[1].(*nbt.Double).Value,
pos.(*nbt.List).Value[2].(*nbt.Double).Value,
}
}
func (world *WorldStore) PlayerData(user string) (playerData nbt.Compound, err error) {
file, err := os.Open(path.Join(world.WorldPath, "players", user+".dat"))
if err != nil {
if os.IsNotExist(err) {
// Player data simply doesn't exist. Not an error, playerData = nil is
// the result.
return nil, nil
}
return
}
defer file.Close()
gzipReader, err := gzip.NewReader(file)
if err != nil {
return
}
defer gzipReader.Close()
playerData, err = nbt.Read(gzipReader)
return
}
func (world *WorldStore) PlayerData(user string) (playerData nbt.ITag, err os.Error) {
file, err := os.Open(path.Join(world.WorldPath, "players", user+".dat"))
if err != nil {
if errno, ok := util.Errno(err); ok && errno == os.ENOENT {
// Player data simply doesn't exist. Not an error, playerData = nil is
// the result.
return nil, nil
}
return
}
defer file.Close()
gzipReader, err := gzip.NewReader(file)
if err != nil {
return
}
defer gzipReader.Close()
playerData, err = nbt.Read(gzipReader)
return
}
