public static IEnumerable <WZProperty> ImageChildren(WZProperty self)
{
using (WZReader reader = self.FileContainer.GetContentReader(null, self))
{
if (self.Offset >= reader.BaseStream.Length)
{
yield break;
}
reader.BaseStream.Seek(self.Offset, SeekOrigin.Begin);
if (reader.ReadByte() != 0x73)
{
throw new InvalidOperationException("Image should have header of 0x73");
}
long oldPosition = reader.BaseStream.Position;
if (!reader.ReadWZString(false, self.Encrypted).Equals("Property"))
{
reader.BaseStream.Position = oldPosition;
if (!reader.ReadWZStringExpecting(out self.Encrypted, "Property", false))
{
throw new InvalidOperationException("Unknown encryption method");
}
}
if (reader.ReadInt16() != 0)
{
throw new InvalidOperationException("Image needs to have 0 as part of header");
}
foreach (WZProperty prop in PropertyList(reader, self).ToArray())
{
yield return(prop);
}
}
}
public static WZProperty Image(WZReader reader, WZProperty self)
{
if (self.Offset >= reader.BaseStream.Length)
{
return(self);
}
self.ContainerStartLocation = self.Offset;
reader.Container = self;
byte imgType = reader.ReadByte();
if (imgType == 1)
{
return(new WZPropertyWeak <string>(() =>
{
using (reader = self.FileContainer.GetContentReader(null, self))
{
reader.BaseStream.Seek(self.Offset, SeekOrigin.Begin);
reader.ReadByte();
return reader.ReadLuaScript();
}
}, self.NameWithoutExtension, self.Path, self.FileContainer, PropertyType.Lua, self.Parent, self.Size, self.Checksum, self.Offset));
}
if (imgType != 0x73)
{
throw new InvalidOperationException("Unknown image type, not supported!");
}
long oldPosition = reader.BaseStream.Position;
if (!reader.ReadWZString(false, self.Encrypted).Equals("Property"))
{
reader.BaseStream.Position = oldPosition;
if (!reader.ReadWZStringExpecting(out self.Encrypted, "Property", false))
{
throw new InvalidOperationException("Unknown encryption method");
}
}
if (reader.ReadInt16() != 0)
{
throw new InvalidOperationException("Image needs to have 0 as part of header");
}
return(self);
}
private void GuessVersion(ushort?hint = null)
{
_r.BaseStream.Seek(_r.ContentsStart, SeekOrigin.Begin);
short ver = _r.ReadInt16();
bool success;
long oldPosition = _r.BaseStream.Position;
long offset = TryFindImageInDir(out success);
Logging($"Found img at {offset} {success}");
if (success)
{
success = GuessVersionWithImageOffsetAt(ver, offset);
_r.BaseStream.Seek(_r.ContentsStart, SeekOrigin.Begin);
if (success)
{
return;
}
}
for (ushort v = 0; v < ushort.MaxValue; v++)
{
uint vHash = v.ToString()
.Aggregate <char, uint>(0, (current, t) => (32 * current) + t + 1);
if ((0xFF ^ (vHash >> 24) ^ (vHash << 8 >> 24) ^ (vHash << 16 >> 24) ^ (vHash << 24 >> 24)) != ver)
{
continue;
}
VersionKey = vHash;
VersionId = v;
_r.VersionKey = vHash;
_r.BaseStream.Position = oldPosition;
if (DepthFirstImageSearch(out offset))
{
break;
}
}
if (!GuessVersionWithImageOffsetAt(ver, offset))
{
throw new Exception("Unable to guess WZ version.");
}
_r.BaseStream.Seek(_r.ContentsStart, SeekOrigin.Begin);
}