public VirtualFile OpenFile(string filename, FileFormat f = FileFormat.None, CacheMethod m = CacheMethod.Default)
{
MixEntry e;
if (!Index.TryGetValue(MixEntry.HashFilename(filename), out e))
{
return(null);
}
else
{
return(FormatHelper.OpenAsFormat(BaseStream, filename, (int)(BaseOffset + dataStart + e.Offset), (int)e.Length, f, m));
}
}
private void ParseHeader()
{
Position = 0;
var reader = new BinaryReader(this);
uint signature = reader.ReadUInt32();
bool isCncMix = (signature & 0xFFFF) != 0;
bool isEncrypted = !isCncMix && (signature & (uint)MixFileFlags.Encrypted) != 0;
VirtualFile header; // After next block this points to a decrypted header
if (!isCncMix)
{
if (isEncrypted)
{
header = new VirtualFile(DecryptHeader(this));
}
else
{
header = this; // implicit no seek; points at beginning of unencrypted header already
}
}
else
{
// first 4 bytes already contained beginning of header, so rewind
header = this;
header.Seek(0, SeekOrigin.Begin);
}
// Now header can be parsed
ushort numFiles = header.ReadUInt16();
uint dataSize = header.ReadUInt32();
Index = new Dictionary <uint, MixEntry>(numFiles);
for (int i = 0; i < numFiles; i++)
{
var entry = new MixEntry(header.ReadUInt32(), header.ReadUInt32(), header.ReadUInt32());
Index[entry.Hash] = entry;
}
dataStart = this.Position; // body follows end of header
}
public static MixingUpdateRequestBuilder Update(string entryId, MixEntry mixEntry)
{
return(new MixingUpdateRequestBuilder(entryId, mixEntry));
}
public static MixingAddRequestBuilder Add(MixEntry mixEntry)
{
return(new MixingAddRequestBuilder(mixEntry));
}
public bool ContainsFile(string filename)
{
return(Index.ContainsKey(MixEntry.HashFilename(filename)));
}
