private void LoadKeys(byte[] handleList)
{
Keys.Clear();
using (var ms = new MemoryStream(handleList))
using (var reader = new BinaryReader(ms))
{
var numHandles = reader.ReadInt32();
for (var i = 0; i < numHandles; i++)
{
var entry = BinUtils.ReadStruct <Key2TableEntry>(reader);
Keys.Add((int)entry.NameIndex, entry);
}
}
}
/// <summary>
/// Reads the structure headers for the LSOF resource
/// </summary>
/// <param name="s">Stream to read the node headers from</param>
/// <param name="longNodes">Use the long (V3) on-disk node format</param>
private void ReadNodes(Stream s, bool longNodes)
{
#if DEBUG_LSF_SERIALIZATION
Console.WriteLine(" ----- DUMP OF NODE TABLE -----");
#endif
Nodes = new List <NodeInfo>();
using (var reader = new BinaryReader(s))
{
Int32 index = 0;
while (s.Position < s.Length)
{
var resolved = new NodeInfo();
if (longNodes)
{
var item = BinUtils.ReadStruct <NodeEntryV3>(reader);
resolved.ParentIndex = item.ParentIndex;
resolved.NameIndex = item.NameIndex;
resolved.NameOffset = item.NameOffset;
resolved.FirstAttributeIndex = item.FirstAttributeIndex;
}
else
{
var item = BinUtils.ReadStruct <NodeEntryV2>(reader);
resolved.ParentIndex = item.ParentIndex;
resolved.NameIndex = item.NameIndex;
resolved.NameOffset = item.NameOffset;
resolved.FirstAttributeIndex = item.FirstAttributeIndex;
}
#if DEBUG_LSF_SERIALIZATION
Console.WriteLine(String.Format(
"{0}: {1} (parent {2}, firstAttribute {3})",
Nodes.Count, Names[resolved.NameIndex][resolved.NameOffset], resolved.ParentIndex,
resolved.FirstAttributeIndex
));
#endif
Nodes.Add(resolved);
index++;
}
}
}
public Resource Read()
{
using (var reader = new BinaryReader(Stream))
{
var hdr = BinUtils.ReadStruct <Header>(reader);
if (hdr.Magic != BitConverter.ToUInt32(Header.Signature, 0))
{
var msg = String.Format(
"Invalid LSF signature; expected {0,8:X}, got {1,8:X}",
BitConverter.ToUInt32(Header.Signature, 0), hdr.Magic
);
throw new InvalidDataException(msg);
}
if (hdr.Version < FileVersion.VerInitial || hdr.Version > FileVersion.CurrentVersion)
{
var msg = String.Format("LSF version {0} is not supported", hdr.Version);
throw new InvalidDataException(msg);
}
bool isCompressed = BinUtils.CompressionFlagsToMethod(hdr.CompressionFlags) != CompressionMethod.None;
if (hdr.StringsSizeOnDisk > 0 || hdr.StringsUncompressedSize > 0)
{
uint onDiskSize = isCompressed ? hdr.StringsSizeOnDisk : hdr.StringsUncompressedSize;
byte[] compressed = reader.ReadBytes((int)onDiskSize);
byte[] uncompressed;
if (isCompressed)
{
uncompressed = BinUtils.Decompress(compressed, (int)hdr.StringsUncompressedSize, hdr.CompressionFlags);
}
else
{
uncompressed = compressed;
}
using (var namesStream = new MemoryStream(uncompressed))
{
ReadNames(namesStream);
}
}
if (hdr.NodesSizeOnDisk > 0 || hdr.NodesUncompressedSize > 0)
{
uint onDiskSize = isCompressed ? hdr.NodesSizeOnDisk : hdr.NodesUncompressedSize;
var uncompressed = Decompress(reader, onDiskSize, hdr.NodesUncompressedSize, hdr);
#if DEBUG_LSF_SERIALIZATION
using (var nodesFile = new FileStream("nodes.bin", FileMode.Create, FileAccess.Write))
{
nodesFile.Write(uncompressed, 0, uncompressed.Length);
}
#endif
using (var nodesStream = new MemoryStream(uncompressed))
{
var longNodes = hdr.Version >= FileVersion.VerExtendedNodes &&
hdr.Extended == 1;
ReadNodes(nodesStream, longNodes);
}
}
if (hdr.AttributesSizeOnDisk > 0 || hdr.AttributesUncompressedSize > 0)
{
uint onDiskSize = isCompressed ? hdr.AttributesSizeOnDisk : hdr.AttributesUncompressedSize;
var uncompressed = Decompress(reader, onDiskSize, hdr.AttributesUncompressedSize, hdr);
#if DEBUG_LSF_SERIALIZATION
using (var attributesFile = new FileStream("attributes.bin", FileMode.Create, FileAccess.Write))
{
attributesFile.Write(uncompressed, 0, uncompressed.Length);
}
#endif
using (var attributesStream = new MemoryStream(uncompressed))
{
var longAttributes = hdr.Version >= FileVersion.VerExtendedNodes &&
hdr.Extended == 1;
ReadAttributes(attributesStream, longAttributes);
}
}
if (hdr.ValuesSizeOnDisk > 0 || hdr.ValuesUncompressedSize > 0)
{
uint onDiskSize = isCompressed ? hdr.ValuesSizeOnDisk : hdr.ValuesUncompressedSize;
var uncompressed = Decompress(reader, onDiskSize, hdr.ValuesUncompressedSize, hdr);
var valueStream = new MemoryStream(uncompressed);
this.Values = valueStream;
#if DEBUG_LSF_SERIALIZATION
using (var valuesFile = new FileStream("values.bin", FileMode.Create, FileAccess.Write))
{
valuesFile.Write(uncompressed, 0, uncompressed.Length);
}
#endif
}
else
{
this.Values = new MemoryStream();
}
Resource resource = new Resource();
ReadRegions(resource);
resource.Metadata.majorVersion = (hdr.EngineVersion & 0xff000000) >> 24;
resource.Metadata.minorVersion = (hdr.EngineVersion & 0xff0000) >> 16;
resource.Metadata.revision = (hdr.EngineVersion & 0xff00) >> 8;
resource.Metadata.buildNumber = (hdr.EngineVersion & 0xff);
return(resource);
}
}
/// <summary>
/// Reads the attribute headers for the LSOF resource
/// </summary>
/// <param name="s">Stream to read the attribute headers from</param>
/// <param name="longAttributes">Use the long (V3) on-disk attribute format</param>
private void ReadAttributes(Stream s, bool longAttributes)
{
Attributes = new List <AttributeInfo>();
using (var reader = new BinaryReader(s))
{
#if DEBUG_LSF_SERIALIZATION
var rawAttributes = new List <AttributeEntry>();
#endif
var prevAttributeRefs = new List <Int32>();
UInt32 dataOffset = 0;
Int32 index = 0;
while (s.Position < s.Length)
{
var attribute = BinUtils.ReadStruct <AttributeEntry>(reader);
var resolved = new AttributeInfo();
resolved.NameIndex = attribute.NameIndex;
resolved.NameOffset = attribute.NameOffset;
resolved.TypeId = attribute.TypeId;
resolved.Length = attribute.Length;
resolved.DataOffset = dataOffset;
resolved.NextAttributeIndex = -1;
if (longAttributes)
{
BinUtils.ReadStruct <AttributeEntryV3>(reader);
}
var nodeIndex = attribute.NodeIndex + 1;
if (prevAttributeRefs.Count > nodeIndex)
{
if (prevAttributeRefs[nodeIndex] != -1)
{
Attributes[prevAttributeRefs[nodeIndex]].NextAttributeIndex = index;
}
prevAttributeRefs[nodeIndex] = index;
}
else
{
while (prevAttributeRefs.Count < nodeIndex)
{
prevAttributeRefs.Add(-1);
}
prevAttributeRefs.Add(index);
}
#if DEBUG_LSF_SERIALIZATION
rawAttributes.Add(attribute);
#endif
dataOffset += resolved.Length;
Attributes.Add(resolved);
index++;
}
#if DEBUG_LSF_SERIALIZATION
Console.WriteLine(" ----- DUMP OF ATTRIBUTE REFERENCES -----");
for (int i = 0; i < prevAttributeRefs.Count; i++)
{
Console.WriteLine(String.Format("Node {0}: last attribute {1}", i, prevAttributeRefs[i]));
}
Console.WriteLine(" ----- DUMP OF ATTRIBUTE TABLE -----");
for (int i = 0; i < Attributes.Count; i++)
{
var resolved = Attributes[i];
var attribute = rawAttributes[i];
var debug = String.Format(
"{0}: {1} (offset {2:X}, typeId {3}, nextAttribute {4}, node {5})",
i, Names[resolved.NameIndex][resolved.NameOffset], resolved.DataOffset,
resolved.TypeId, resolved.NextAttributeIndex, attribute.NodeIndex
);
Console.WriteLine(debug);
}
#endif
}
}
