440 lines
10 KiB
Go
440 lines
10 KiB
Go
package lsb
|
|
|
|
import (
|
|
"encoding/binary"
|
|
"errors"
|
|
"fmt"
|
|
"io"
|
|
"sort"
|
|
|
|
"git.narnian.us/lordwelch/lsgo"
|
|
|
|
"github.com/go-kit/kit/log"
|
|
)
|
|
|
|
const (
|
|
Signature = "LSFM"
|
|
PreBG3Signature = "\x00\x00\x00\x40"
|
|
)
|
|
|
|
type Header struct {
|
|
Signature [4]byte
|
|
Size uint32
|
|
Endianness uint32
|
|
Unknown uint32
|
|
Version lsgo.LSMetadata
|
|
}
|
|
|
|
func (h *Header) Read(r io.ReadSeeker) error {
|
|
var (
|
|
l log.Logger
|
|
pos int64
|
|
n int
|
|
err error
|
|
)
|
|
l = log.With(lsgo.Logger, "component", "LS converter", "file type", "lsb", "part", "header")
|
|
pos, _ = r.Seek(0, io.SeekCurrent)
|
|
|
|
n, err = r.Read(h.Signature[:])
|
|
if err != nil {
|
|
return err
|
|
}
|
|
l.Log("member", "Signature", "read", n, "start position", pos, "value", fmt.Sprintf("%#x", h.Signature[:]))
|
|
pos += int64(n)
|
|
err = binary.Read(r, binary.LittleEndian, &h.Size)
|
|
n = 4
|
|
if err != nil {
|
|
return err
|
|
}
|
|
l.Log("member", "Size", "read", n, "start position", pos, "value", h.Size)
|
|
pos += int64(n)
|
|
|
|
err = binary.Read(r, binary.LittleEndian, &h.Endianness)
|
|
n = 4
|
|
if err != nil {
|
|
return err
|
|
}
|
|
l.Log("member", "Endianness", "read", n, "start position", pos, "value", h.Endianness)
|
|
pos += int64(n)
|
|
|
|
err = binary.Read(r, binary.LittleEndian, &h.Unknown)
|
|
n = 4
|
|
if err != nil {
|
|
return err
|
|
}
|
|
l.Log("member", "Unknown", "read", n, "start position", pos, "value", h.Unknown)
|
|
pos += int64(n)
|
|
|
|
err = binary.Read(r, binary.LittleEndian, &h.Version.Timestamp)
|
|
n = 4
|
|
if err != nil {
|
|
return err
|
|
}
|
|
l.Log("member", "Version.Timestamp", "read", n, "start position", pos, "value", h.Version.Timestamp)
|
|
pos += int64(n)
|
|
|
|
err = binary.Read(r, binary.LittleEndian, &h.Version.Major)
|
|
n = 4
|
|
if err != nil {
|
|
return err
|
|
}
|
|
l.Log("member", "Version.Major", "read", n, "start position", pos, "value", h.Version.Major)
|
|
pos += int64(n)
|
|
|
|
err = binary.Read(r, binary.LittleEndian, &h.Version.Minor)
|
|
n = 4
|
|
if err != nil {
|
|
return err
|
|
}
|
|
l.Log("member", "Version.Minor", "read", n, "start position", pos, "value", h.Version.Minor)
|
|
pos += int64(n)
|
|
|
|
err = binary.Read(r, binary.LittleEndian, &h.Version.Revision)
|
|
n = 4
|
|
if err != nil {
|
|
return err
|
|
}
|
|
l.Log("member", "Version.Revision", "read", n, "start position", pos, "value", h.Version.Revision)
|
|
|
|
err = binary.Read(r, binary.LittleEndian, &h.Version.Build)
|
|
n = 4
|
|
if err != nil {
|
|
return err
|
|
}
|
|
l.Log("member", "Version.Build", "read", n, "start position", pos, "value", h.Version.Build)
|
|
pos += int64(n)
|
|
|
|
return nil
|
|
}
|
|
|
|
type IdentifierDictionary map[int]string
|
|
|
|
func Read(r io.ReadSeeker) (lsgo.Resource, error) {
|
|
var (
|
|
hdr = &Header{}
|
|
err error
|
|
d IdentifierDictionary
|
|
res lsgo.Resource
|
|
|
|
l log.Logger
|
|
pos int64
|
|
)
|
|
l = log.With(lsgo.Logger, "component", "LS converter", "file type", "lsb", "part", "file")
|
|
pos, _ = r.Seek(0, io.SeekCurrent)
|
|
l.Log("member", "header", "start position", pos)
|
|
|
|
err = hdr.Read(r)
|
|
if err != nil {
|
|
return lsgo.Resource{}, err
|
|
}
|
|
if !(string(hdr.Signature[:]) == Signature || string(hdr.Signature[:]) == PreBG3Signature) {
|
|
return lsgo.Resource{}, lsgo.HeaderError{
|
|
Expected: Signature,
|
|
Got: hdr.Signature[:],
|
|
}
|
|
}
|
|
|
|
pos, _ = r.Seek(0, io.SeekCurrent)
|
|
l.Log("member", "string dictionary", "start position", pos)
|
|
d, err = ReadLSBDictionary(r, binary.LittleEndian)
|
|
if err != nil {
|
|
return lsgo.Resource{}, err
|
|
}
|
|
|
|
pos, _ = r.Seek(0, io.SeekCurrent)
|
|
l.Log("member", "Regions", "start position", pos)
|
|
|
|
res, err = ReadLSBRegions(r, d, binary.LittleEndian, lsgo.FileVersion(hdr.Version.Major))
|
|
res.Metadata = hdr.Version
|
|
return res, err
|
|
}
|
|
|
|
func ReadLSBDictionary(r io.ReadSeeker, endianness binary.ByteOrder) (IdentifierDictionary, error) {
|
|
var (
|
|
dict IdentifierDictionary
|
|
length uint32
|
|
err error
|
|
|
|
l log.Logger
|
|
pos int64
|
|
n int
|
|
)
|
|
l = log.With(lsgo.Logger, "component", "LS converter", "file type", "lsb", "part", "dictionary")
|
|
pos, _ = r.Seek(0, io.SeekCurrent)
|
|
|
|
err = binary.Read(r, endianness, &length)
|
|
n = 4
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
l.Log("member", "length", "read", n, "start position", pos, "value", length)
|
|
pos += int64(n)
|
|
|
|
dict = make(IdentifierDictionary, length)
|
|
for i := 0; i < int(length); i++ {
|
|
var (
|
|
stringLength uint32
|
|
key uint32
|
|
str string
|
|
)
|
|
err = binary.Read(r, endianness, &stringLength)
|
|
n = 4
|
|
if err != nil {
|
|
return dict, err
|
|
}
|
|
l.Log("member", "stringLength", "read", n, "start position", pos, "value", stringLength)
|
|
pos += int64(n)
|
|
|
|
str, err = lsgo.ReadCString(r, int(stringLength))
|
|
n += int(stringLength)
|
|
if err != nil {
|
|
return dict, err
|
|
}
|
|
l.Log("member", "str", "read", n, "start position", pos, "value", str)
|
|
pos += int64(n)
|
|
|
|
err = binary.Read(r, endianness, &key)
|
|
n = 4
|
|
if err != nil {
|
|
return dict, err
|
|
}
|
|
dict[int(key)] = str
|
|
l.Log("member", "key", "read", n, "start position", pos, "value", key)
|
|
pos += int64(n)
|
|
}
|
|
return dict, nil
|
|
}
|
|
|
|
func ReadLSBRegions(r io.ReadSeeker, d IdentifierDictionary, endianness binary.ByteOrder, version lsgo.FileVersion) (lsgo.Resource, error) {
|
|
var (
|
|
regions []struct {
|
|
name string
|
|
offset uint32
|
|
}
|
|
regionCount uint32
|
|
err error
|
|
|
|
l log.Logger
|
|
pos int64
|
|
n int
|
|
)
|
|
l = log.With(lsgo.Logger, "component", "LS converter", "file type", "lsb", "part", "region")
|
|
pos, _ = r.Seek(0, io.SeekCurrent)
|
|
|
|
err = binary.Read(r, endianness, ®ionCount)
|
|
n = 4
|
|
if err != nil {
|
|
return lsgo.Resource{}, err
|
|
}
|
|
l.Log("member", "regionCount", "read", n, "start position", pos, "value", regionCount)
|
|
pos += int64(n)
|
|
|
|
regions = make([]struct {
|
|
name string
|
|
offset uint32
|
|
}, regionCount)
|
|
for i := range regions {
|
|
var (
|
|
key uint32
|
|
ok bool
|
|
)
|
|
err = binary.Read(r, endianness, &key)
|
|
n = 4
|
|
if err != nil {
|
|
return lsgo.Resource{}, err
|
|
}
|
|
l.Log("member", "key", "read", n, "start position", pos, "value", d[int(key)], "key", key)
|
|
pos += int64(n)
|
|
if regions[i].name, ok = d[int(key)]; !ok {
|
|
return lsgo.Resource{}, lsgo.ErrInvalidNameKey
|
|
}
|
|
err = binary.Read(r, endianness, ®ions[i].offset)
|
|
n = 4
|
|
if err != nil {
|
|
return lsgo.Resource{}, err
|
|
}
|
|
l.Log("member", "offset", "read", n, "start position", pos, "value", regions[i].offset)
|
|
pos += int64(n)
|
|
}
|
|
sort.Slice(regions, func(i, j int) bool {
|
|
return regions[i].offset < regions[j].offset
|
|
})
|
|
res := lsgo.Resource{
|
|
Regions: make([]*lsgo.Node, 0, regionCount),
|
|
}
|
|
for _, re := range regions {
|
|
var node *lsgo.Node
|
|
node, err = readLSBNode(r, d, endianness, version, re.offset)
|
|
if err != nil {
|
|
return res, err
|
|
}
|
|
node.RegionName = re.name
|
|
res.Regions = append(res.Regions, node)
|
|
}
|
|
return res, nil
|
|
}
|
|
|
|
func readLSBNode(r io.ReadSeeker, d IdentifierDictionary, endianness binary.ByteOrder, version lsgo.FileVersion, offset uint32) (*lsgo.Node, error) {
|
|
var (
|
|
key uint32
|
|
attrCount uint32
|
|
childCount uint32
|
|
node = new(lsgo.Node)
|
|
err error
|
|
ok bool
|
|
|
|
l log.Logger
|
|
pos int64
|
|
n int
|
|
)
|
|
l = log.With(lsgo.Logger, "component", "LS converter", "file type", "lsb", "part", "node")
|
|
pos, _ = r.Seek(0, io.SeekCurrent)
|
|
|
|
if pos != int64(offset) && offset != 0 {
|
|
panic("shit")
|
|
}
|
|
|
|
err = binary.Read(r, endianness, &key)
|
|
n = 4
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
l.Log("member", "key", "read", n, "start position", pos, "value", d[int(key)], "key", key)
|
|
pos += int64(n)
|
|
|
|
if node.Name, ok = d[int(key)]; !ok {
|
|
return nil, errors.New("node id key is invalid")
|
|
}
|
|
|
|
err = binary.Read(r, endianness, &attrCount)
|
|
n = 4
|
|
if err != nil {
|
|
return node, err
|
|
}
|
|
l.Log("member", "attrCount", "read", n, "start position", pos, "value", attrCount)
|
|
pos += int64(n)
|
|
|
|
err = binary.Read(r, endianness, &childCount)
|
|
n = 4
|
|
if err != nil {
|
|
return node, err
|
|
}
|
|
l.Log("member", "childCount", "read", n, "start position", pos, "value", childCount)
|
|
|
|
node.Attributes = make([]lsgo.NodeAttribute, int(attrCount))
|
|
|
|
for i := range node.Attributes {
|
|
node.Attributes[i], err = readLSBAttribute(r, d, endianness, version)
|
|
if err != nil {
|
|
return node, err
|
|
}
|
|
}
|
|
|
|
node.Children = make([]*lsgo.Node, int(childCount))
|
|
for i := range node.Children {
|
|
node.Children[i], err = readLSBNode(r, d, endianness, version, 0)
|
|
if err != nil {
|
|
return node, err
|
|
}
|
|
}
|
|
return node, nil
|
|
}
|
|
|
|
func readLSBAttribute(r io.ReadSeeker, d IdentifierDictionary, endianness binary.ByteOrder, version lsgo.FileVersion) (lsgo.NodeAttribute, error) {
|
|
var (
|
|
key uint32
|
|
name string
|
|
attrType uint32
|
|
attr lsgo.NodeAttribute
|
|
err error
|
|
ok bool
|
|
)
|
|
err = binary.Read(r, endianness, &key)
|
|
if err != nil {
|
|
return attr, err
|
|
}
|
|
if name, ok = d[int(key)]; !ok {
|
|
return attr, lsgo.ErrInvalidNameKey
|
|
}
|
|
err = binary.Read(r, endianness, &attrType)
|
|
if err != nil {
|
|
return attr, err
|
|
}
|
|
return ReadLSBAttr(r, name, lsgo.DataType(attrType), endianness, version)
|
|
}
|
|
|
|
func ReadLSBAttr(r io.ReadSeeker, name string, dt lsgo.DataType, endianness binary.ByteOrder, version lsgo.FileVersion) (lsgo.NodeAttribute, error) {
|
|
// LSF and LSB serialize the buffer types differently, so specialized
|
|
// code is added to the LSB and LSf serializers, and the common code is
|
|
// available in BinUtils.ReadAttribute()
|
|
var (
|
|
attr = lsgo.NodeAttribute{
|
|
Type: dt,
|
|
Name: name,
|
|
}
|
|
err error
|
|
length uint32
|
|
|
|
l log.Logger
|
|
pos int64
|
|
)
|
|
l = log.With(lsgo.Logger, "component", "LS converter", "file type", "lsb", "part", "attribute")
|
|
pos, _ = r.Seek(0, io.SeekCurrent)
|
|
|
|
switch dt {
|
|
case lsgo.DTString, lsgo.DTPath, lsgo.DTFixedString, lsgo.DTLSString: // DTLSWString:
|
|
var v string
|
|
err = binary.Read(r, endianness, &length)
|
|
if err != nil {
|
|
return attr, err
|
|
}
|
|
v, err = lsgo.ReadCString(r, int(length))
|
|
attr.Value = v
|
|
|
|
l.Log("member", name, "read", length, "start position", pos, "value", attr.Value)
|
|
|
|
return attr, err
|
|
|
|
case lsgo.DTWString:
|
|
panic("Not implemented")
|
|
|
|
case lsgo.DTTranslatedString:
|
|
var v lsgo.TranslatedString
|
|
v, err = lsgo.ReadTranslatedString(r, version, 0)
|
|
attr.Value = v
|
|
|
|
l.Log("member", name, "read", length, "start position", pos, "value", attr.Value)
|
|
|
|
return attr, err
|
|
|
|
case lsgo.DTTranslatedFSString:
|
|
panic("Not implemented")
|
|
var v lsgo.TranslatedFSString
|
|
// v, err = ReadTranslatedFSString(r, Version)
|
|
attr.Value = v
|
|
|
|
l.Log("member", name, "read", length, "start position", pos, "value", attr.Value)
|
|
|
|
return attr, err
|
|
|
|
case lsgo.DTScratchBuffer:
|
|
panic("Not implemented")
|
|
|
|
v := make([]byte, length)
|
|
_, err = r.Read(v)
|
|
attr.Value = v
|
|
|
|
l.Log("member", name, "read", length, "start position", pos, "value", attr.Value)
|
|
|
|
return attr, err
|
|
|
|
default:
|
|
return lsgo.ReadAttribute(r, name, dt, uint(length), l)
|
|
}
|
|
}
|
|
|
|
func init() {
|
|
lsgo.RegisterFormat("lsb", Signature, Read)
|
|
lsgo.RegisterFormat("lsb", PreBG3Signature, Read)
|
|
}
|