/// <summary>
/// Parses the WzDirectory
/// <paramref name="lazyParse">Only parses the first directory</paramref>
/// </summary>
internal void ParseDirectory(bool lazyParse = false)
{
//Debug.WriteLine(HexTool.ToString( reader.ReadBytes(20)));
//reader.BaseStream.Position = reader.BaseStream.Position - 20;
long available = reader.Available();
if (available == 0)
{
return;
}
int entryCount = reader.ReadCompressedInt();
if (entryCount < 0 || entryCount > 100000) // probably nothing > 100k folders for now.
{
throw new Exception("Invalid wz version used for decryption, try parsing other version numbers.");
}
for (int i = 0; i < entryCount; i++)
{
byte type = reader.ReadByte();
string fname = null;
int fsize;
int checksum;
uint offset;
long rememberPos = 0;
switch (type)
{
case 1: //01 XX 00 00 00 00 00 OFFSET (4 bytes)
{
int unknown = reader.ReadInt32();
reader.ReadInt16();
uint offs = reader.ReadOffset();
continue;
}
case 2:
{
int stringOffset = reader.ReadInt32();
rememberPos = reader.BaseStream.Position;
reader.BaseStream.Position = reader.Header.FStart + stringOffset;
type = reader.ReadByte();
fname = reader.ReadString();
break;
}
case 3:
case 4:
{
fname = reader.ReadString();
rememberPos = reader.BaseStream.Position;
break;
}
default:
{
throw new Exception("[WzDirectory] Unknown directory. type = " + type);
}
}
reader.BaseStream.Position = rememberPos;
fsize = reader.ReadCompressedInt();
checksum = reader.ReadCompressedInt();
offset = reader.ReadOffset(); // IWzArchive::Getposition(pArchive)
if (type == 3)
{
WzDirectory subDir = new WzDirectory(reader, fname, hash, WzIv, wzFile)
{
BlockSize = fsize,
Checksum = checksum,
Offset = offset,
Parent = this
};
subDirs.Add(subDir);
if (lazyParse)
{
break;
}
}
else
{
WzImage img = new WzImage(fname, reader, checksum)
{
BlockSize = fsize,
Offset = offset,
Parent = this
};
images.Add(img);
if (lazyParse)
{
break;
}
}
}
foreach (WzDirectory subdir in subDirs)
{
if (subdir.Checksum != 0)
{
reader.BaseStream.Position = subdir.offset;
subdir.ParseDirectory();
}
}
}
