Add initial lsb file reading code

NodeAttribute.go

@@ -33,10 +33,6 @@ func (ts TranslatedString) MarshalXML(e *xml.Encoder, start *xml.StartElement) e
 			Name:  xml.Name{Local: "version"},
 			Value: strconv.Itoa(int(ts.Version)),
 		},
-		// xml.Attr{
-		// 	Name:  xml.Name{Local: "value"},
-		// 	Value: ts.Value,
-		// },
 	)
 	return nil
 }

const.go

@@ -49,5 +49,7 @@ const (
 )
 
 var (
-	ErrVectorTooBig = errors.New("the vector is too big cannot marshal to an xml element")
+	ErrVectorTooBig    = errors.New("the vector is too big cannot marshal to an xml element")
+	ErrInvalidNameKey  = errors.New("invalid name key")
+	ErrKeyDoesNotMatch = errors.New("key for this node does not match")
 )

lsb.go

@@ -0,0 +1,209 @@
+package lslib
+
+import (
+	"encoding/binary"
+	"io"
+
+	"github.com/go-kit/kit/log"
+)
+
+type LSBHeader struct {
+	Signature  [4]byte
+	Size       uint32
+	Endianness uint32
+	Unknown    uint32
+	Version    struct {
+		Major    uint32
+		Minor    uint32
+		Build    uint32
+		Revision uint32
+	}
+}
+
+type LSBRegion struct {
+	name string
+	offset
+}
+
+type IdentifierDictionary map[int]string
+
+func ReadLSBDictionary(r io.Reader, endianness binary.ByteOrder) (IdentifierDictionary, error) {
+	var (
+		dict IdentifierDictionary
+		size uint32
+		err  error
+	)
+	err = binary.Read(r, endianness, &size)
+	if err != nil {
+		return nil, err
+	}
+	dict = make(IdentifierDictionary, size)
+	for i := 0; i < int(size); i++ {
+		var (
+			stringlength uint32
+			key          uint32
+			str          string
+		)
+		err = binary.Read(r, endianness, &stringlength)
+		if err != nil {
+			return dict, err
+		}
+		str, err = ReadCString(r, int(stringlength))
+		if err != nil {
+			return dict, err
+		}
+		err = binary.Read(r, endianness, &key)
+		if err != nil {
+			return dict, err
+		}
+		dict[key] = str
+	}
+}
+
+func ReadLSBRegions(r io.Reader, d IdentifierDictionary, endianness binary.ByteOrder) (Resource, error) {
+	var (
+		nodes []struct {
+			node   *Node
+			offset uint32
+		}
+		nodeCount uint32
+		err       error
+	)
+
+	err = binary.Read(r, endianness, &nodeCount)
+	if err != nil {
+		return dict, err
+	}
+	nodes = make([]struct{ Node, offset uint32 }, nodeCount)
+	for _, n := range nodes {
+		var (
+			key uint32
+			ok  bool
+		)
+		err = binary.Read(r, endianness, &key)
+		if err != nil {
+			return dict, err
+		}
+		n.node = new(Node)
+		if n.node.Name, ok = d[int(key)]; !ok {
+			return Resource{}, ErrInvalidNameKey
+		}
+		err = binary.Read(r, endianness, &n.offset)
+		if err != nil {
+			return dict, err
+		}
+	}
+	// TODO: Sort
+	for _, n := range nodes {
+		var (
+			key        uint32
+			attrCount  uint32
+			childCount uint32
+		)
+		// TODO: Check offset
+
+		err = binary.Read(r, endianness, &key)
+		if err != nil {
+			return dict, err
+		}
+		// if keyV, ok := d[int(key)]; !ok {
+		// 	return Resource{}, ErrKeyDoesNotMatch
+		// }
+
+		err = binary.Read(r, endianness, &attrCount)
+		if err != nil {
+			return dict, err
+		}
+		n.node.Attributes = make([]NodeAttribute, int(attrCount))
+		err = binary.Read(r, endianness, &nodeCount)
+		if err != nil {
+			return dict, err
+		}
+
+	}
+}
+
+func readLSBAttribute(r io.Reader) (NodeAttribute, err) {
+	var (
+		key      uint32
+		name     string
+		attrType uint32
+		attr     NodeAttribute
+	)
+	err = binary.Read(r, endianness, &key)
+	if err != nil {
+		return dict, err
+	}
+	if name, ok = d[int(key)]; !ok {
+		return Resource{}, ErrInvalidNameKey
+	}
+	err = binary.Read(r, endianness, &attrType)
+	if err != nil {
+		return dict, err
+	}
+	ReadLSBAttribute(r, name, DataType(attrType))
+}
+
+func ReadLSBAttr(r io.ReadSeeker, name string, DT DataType) (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 = NodeAttribute{
+			Type: DT,
+			Name: name,
+		}
+		err error
+
+		l   log.Logger
+		pos int64
+	)
+	l = log.With(Logger, "component", "LS converter", "file type", "lsb", "part", "attribute")
+	pos, err = r.Seek(0, io.SeekCurrent)
+
+	switch DT {
+	case DT_String, DT_Path, DT_FixedString, DT_LSString, DT_WString, DT_LSWString:
+		var v string
+		v, err = ReadCString(r, int(length))
+		attr.Value = v
+
+		l.Log("member", name, "read", length, "start position", pos, "value", attr.Value)
+		pos += int64(length)
+
+		return attr, err
+
+	case DT_TranslatedString:
+		var v TranslatedString
+		v, err = ReadTranslatedString(r, Version, EngineVersion)
+		attr.Value = v
+
+		l.Log("member", name, "read", length, "start position", pos, "value", attr.Value)
+		pos += int64(length)
+
+		return attr, err
+
+	case DT_TranslatedFSString:
+		var v TranslatedFSString
+		v, err = ReadTranslatedFSString(r, Version)
+		attr.Value = v
+
+		l.Log("member", name, "read", length, "start position", pos, "value", attr.Value)
+		pos += int64(length)
+
+		return attr, err
+
+	case DT_ScratchBuffer:
+
+		v := make([]byte, length)
+		_, err = r.Read(v)
+		attr.Value = v
+
+		l.Log("member", name, "read", length, "start position", pos, "value", attr.Value)
+		pos += int64(length)
+
+		return attr, err
+
+	default:
+		return ReadAttribute(r, name, DT, length, l)
+	}
+}