public override long WriteReplacer(AssetsFileWriter writer)
{
writer.Write((short)2); //replacer type
writer.Write((byte)1); //file type (0 bundle, 1 assets)
writer.Write((byte)1); //idk, always 1
writer.Write(0); //always 0 even when fileid is something else
writer.Write(GetPathID());
writer.Write(GetClassID());
writer.Write(GetMonoScriptID());
writer.Write(preloadList.Count);
for (int i = 0; i < preloadList.Count; i++)
{
writer.Write(preloadList[i].fileID);
writer.Write(preloadList[i].pathID);
}
//flag1, unknown
writer.Write((byte)0);
//flag2
if (propertiesHash.data != null)
{
writer.Write((byte)1);
writer.Write(propertiesHash.data);
}
else
{
writer.Write((byte)0);
}
//flag3
if (scriptIdHash.data != null)
{
writer.Write((byte)1);
writer.Write(scriptIdHash.data);
}
else
{
writer.Write((byte)0);
}
//flag4
if (file != null)
{
writer.Write((byte)1);
file.Write(writer);
}
else
{
writer.Write((byte)0);
}
writer.Write(GetSize());
Write(writer);
return(writer.Position);
}
public void Write(AssetsFileWriter writer, int optimizeStringTable = 1, int compress = 1)
{
long filePos = writer.BaseStream.Position;
//lol don't do this if compress is 0
if ((compress & 0x80) == 0)
{
throw new NotImplementedException("Compression flag 0x80 must be used");
}
//compress 1 for lz4 and 2 for lzma
//this is backwards from assets files
//build string table
StringBuilder strTableBuilder = new StringBuilder();
Dictionary <string, uint> strTableMap;
if (optimizeStringTable != 0)
{
strTableMap = new Dictionary <string, uint>();
}
else
{
strTableMap = null;
}
foreach (ClassDatabaseFile cldb in files)
{
for (int i = 0; i < cldb.classes.Count; i++)
{
ClassDatabaseType type = cldb.classes[i];
AddStringTableEntry(cldb, strTableBuilder, strTableMap, ref type.name);
if (header.fileVersion == 4 && (cldb.header.flags & 1) != 0)
{
AddStringTableEntry(cldb, strTableBuilder, strTableMap, ref type.assemblyFileName);
}
List <ClassDatabaseTypeField> fields = type.fields;
for (int j = 0; j < fields.Count; j++)
{
ClassDatabaseTypeField field = fields[j];
AddStringTableEntry(cldb, strTableBuilder, strTableMap, ref field.fieldName);
AddStringTableEntry(cldb, strTableBuilder, strTableMap, ref field.typeName);
fields[j] = field;
}
}
}
header.fileCount = (uint)files.Count;
header.Write(writer);
using (MemoryStream cldbMs = new MemoryStream())
using (AssetsFileWriter cldbWriter = new AssetsFileWriter(cldbMs))
{
//annoyingly, files and header.files are two different lists...
for (int i = 0; i < files.Count; i++)
{
ClassDatabaseFile cldb = files[i];
long cldbStartFilePos = cldbWriter.BaseStream.Position;
//does not support 0x80 self compression rn
cldb.Write(cldbWriter, 0, 0, false);
long cldbEndFilePos = cldbWriter.BaseStream.Position;
string cldbName = header.files[i].name;
header.files[i] = new ClassDatabaseFileRef()
{
offset = (uint)cldbStartFilePos,
length = (uint)(cldbEndFilePos - cldbStartFilePos),
name = cldbName
};
}
header.fileBlockSize = (uint)cldbMs.Length;
cldbMs.Position = 0;
if ((compress & 0x20) == 0) //compressed
{
if ((compress & 0x1f) == 1) //lz4
{
byte[] compressedBlock = LZ4Codec.Encode32HC(cldbMs.ToArray(), 0, (int)cldbMs.Length);
writer.Write(compressedBlock);
}
else if ((compress & 0x1f) == 2) //lzma
{
byte[] compressedBlock = SevenZipHelper.Compress(cldbMs.ToArray());
writer.Write(compressedBlock);
}
else
{
throw new ArgumentException("File marked as compressed but no valid compression option set!");
}
}
else //write normally
{
cldbMs.CopyToCompat(writer.BaseStream);
}
}
header.stringTableOffset = (uint)writer.Position;
byte[] stringTableBytes = Encoding.ASCII.GetBytes(strTableBuilder.ToString());
header.stringTableLenUncompressed = (uint)stringTableBytes.Length;
if ((compress & 0x40) == 0) //string table is compressed
{
if ((compress & 0x1f) == 1) //lz4
{
stringTableBytes = LZ4Codec.Encode32HC(stringTableBytes, 0, stringTableBytes.Length);
}
else if ((compress & 0x1f) == 2) //lzma
{
stringTableBytes = SevenZipHelper.Compress(stringTableBytes);
}
else
{
throw new ArgumentException("File marked as compressed but no valid compression option set!");
}
}
header.stringTableLenCompressed = (uint)stringTableBytes.Length;
writer.Write(stringTableBytes);
writer.Position = filePos;
header.compressionType = (byte)compress;
header.Write(writer);
}