private FileSet ReadFileSet(Stream stream, string name)
{
FileSet fileSet = new FileSet(name);
using (BinaryReader reader = new BinaryReader(stream)) {
SectionSet fileSetSections = SectionIO.ReadAll(reader);
PACKFSHD fileSetHeader = fileSetSections.Get <PACKFSHD>();
GENESTRT fileSetNameTable = fileSetSections.Get <GENESTRT>();
foreach (PACKFSHD.FileEntry fEntry in fileSetHeader.Files)
{
string fName = fileSetNameTable.Strings[(int)fEntry.NameIndex];
byte[] rawData = new byte[fEntry.CompressedSize];
stream.Seek((long)fEntry.Offset, SeekOrigin.Begin);
stream.Read(rawData);
if (fEntry.Unknown != 0x2)
{
throw new Exception("Unsupported value of unknown file set file entry field: " + fEntry.Unknown);
}
fileSet.Files.Add(new File(fName, rawData, true, fEntry.UncompressedSize));
}
}
return(fileSet);
}
private void WriteFileSet(Stream stream, FileSet fileSet)
{
PACKFSHD fileSetHeader = new PACKFSHD();
GENESTRT fileSetNameTable = new GENESTRT();
fileSetHeader.Unknown = 0x10000;
fileSetHeader.DataOffset = 0; // Filled in later.
foreach (File file in fileSet.Files)
{
PACKFSHD.FileEntry fileEntry = new PACKFSHD.FileEntry();
fileEntry.NameIndex = fileSetNameTable.AddString(file.Name);
fileEntry.Unknown = 0x2;
fileEntry.Offset = 0; // Filled in later.
fileEntry.UncompressedSize = file.UncompressedSize;
fileEntry.CompressedSize = (uint)file.RawData.Length;
fileSetHeader.Files.Add(fileEntry);
}
SectionSet fileSetSections = new SectionSet();
fileSetSections.Add(new ENDILTLE());
fileSetSections.Add(fileSetHeader);
fileSetSections.Add(fileSetNameTable);
fileSetSections.Add(new GENEEOF());
ulong headersSize;
using (MemoryStream sizeTestStream = new MemoryStream()) {
SectionIO.WriteAll(sizeTestStream, fileSetSections);
headersSize = (ulong)sizeTestStream.Length;
}
ulong currOffset = NumberUtil.Align(headersSize, 0x10);
fileSetHeader.DataOffset = (uint)currOffset - 0x10; // Offset excludes ENDILTLE.
foreach (PACKFSHD.FileEntry fileEntry in fileSetHeader.Files)
{
fileEntry.Offset = currOffset;
currOffset = NumberUtil.Align(currOffset + fileEntry.CompressedSize, 0x10);
}
SectionIO.WriteAll(stream, fileSetSections);
foreach (File file in fileSet.Files)
{
stream.Write(file.RawData);
stream.PadTo(0x10);
}
}
