public override Stream Encode(bool _ = false)
{
Stream fSysStream = $"{Path}/{FileName}.repak".GetNewStream();
if (ExtractedEntries.Count == 0)
{
// nothing extracted, nothing changed
// just copy the existing stream back
ExtractedFile.Seek(0, SeekOrigin.Begin);
ExtractedFile.CopyTo(fSysStream);
return(fSysStream);
}
// unpack the entire fsys archive for easier repacking
if (ExtractedEntries.Count < NumberOfEntries)
{
FSysExtractor.ExtractFSys(this, false);
}
// copy the header back, we'll update the sizes later
NumberOfEntries = ExtractedEntries.Count;
ExtractedFile.Seek(0, SeekOrigin.Begin);
ExtractedFile.CopySubStream(fSysStream, 0, 0x60);
var sizeOfDetailsPointers = (fSysDetailsHeaders.Count * 4);
var startNameOffset = 0x60 + sizeOfDetailsPointers + sizeOfDetailsPointers.GetAlignBytesCount(16);
fSysStream.Seek(startNameOffset, SeekOrigin.Begin);
// write the name table
var startDataOffset = uint.MaxValue;
foreach (var detailHeader in fSysDetailsHeaders)
{
fSysStream.Write(detailHeader.FileName.ToByteArray());
fSysStream.WriteByte(0);
if (detailHeader.StartOffset < startDataOffset)
{
startDataOffset = detailHeader.StartOffset;
}
}
// align names
fSysStream.AlignStream(0x10);
var lastNameOffset = (int)fSysStream.Position;
var startDetailsOffsewt = 0x60;
// write pointers to details offset
fSysStream.Seek(startDetailsOffsewt, SeekOrigin.Begin);
for (int x = 0; x < fSysDetailsHeaders.Count; x++)
{
fSysStream.Write((lastNameOffset + (x * 0x70)).GetBytes());
}
// write our data, update offsets along the way if we find mismatches
for (int i = 0; i < fSysDetailsHeaders.Count; i++)
{
var detailHeader = fSysDetailsHeaders[i];
var entryFileName = detailHeader.FileName.ToString();
if (!entryFileName.EndsWith(detailHeader.Filetype.FileTypeName()))
{
entryFileName = $"{entryFileName}{detailHeader.Filetype.FileTypeName()}";
}
var entry = ExtractedEntries[entryFileName];
using var encodeStream = entry.Encode(detailHeader.IsCompressed);
fSysStream.Seek(detailHeader.StartOffset, SeekOrigin.Begin);
encodeStream.CopyTo(fSysStream);
fSysStream.Flush();
detailHeader.UncompressedSize = (uint)entry.ExtractedFile.Length;
if (encodeStream.Length != detailHeader.CompressedSize)
{
var adjustedSize = (int)(encodeStream.Length - detailHeader.CompressedSize);
detailHeader.CompressedSize = (uint)encodeStream.Length;
if (adjustedSize < 0)
{
continue; // probably wasteful, but meh
}
for (int j = i + 1; j < fSysDetailsHeaders.Count; j++)
{
var adjDetailsHeader = fSysDetailsHeaders[j];
adjDetailsHeader.StartOffset += (uint)adjustedSize;
adjDetailsHeader.StartOffset += adjDetailsHeader.StartOffset.GetAlignBytesCount(0x10);
}
}
}
fSysStream.AlignStream(0x10);
fSysStream.Write(new byte[0x10]);
fSysStream.Seek(-4, SeekOrigin.Current);
fSysStream.Write(FSYSbytes.GetBytes());
fSysStream.Flush();
fSysStream.WriteBytesAtOffset(FSYSFileSizeOffset, ((int)fSysStream.Length).GetBytes());
// go back and re-write our file details table
fSysStream.Seek(lastNameOffset, SeekOrigin.Begin);
foreach (var detailHeader in fSysDetailsHeaders)
{
fSysStream.Write(detailHeader.Encode());
}
fSysStream.Flush();
fSysStream.Seek(0, SeekOrigin.Begin);
return(fSysStream);
}
