public ISO ExtractISO()
{
// read game and region
ISOStream.Seek(0, SeekOrigin.Begin);
int game = ISOStream.GetUShortAtOffset(1);
var region = ISOStream.ReadByte();
Game gameEnum;
Region regionEnum;
switch (game)
{
case (ushort)Game.Colosseum:
case (ushort)Game.XD:
gameEnum = (Game)game;
break;
default:
throw new Exception("Unsupported game!");
}
switch (region)
{
case (byte)Region.US:
case (byte)Region.Europe:
case (byte)Region.Japan:
regionEnum = (Region)region;
break;
default:
throw new Exception("Unknown region!");
}
ExtractPath = $"{Configuration.ExtractDirectory}/{gameEnum}-{regionEnum}";
if (!Directory.Exists(ExtractPath) && !Configuration.UseMemoryStreams)
{
Directory.CreateDirectory(ExtractPath);
}
var iso = new ISO(ISOStream, ExtractPath)
{
Game = gameEnum,
Region = regionEnum,
DOL = new DOL(ExtractPath, this),
TOC = new FST(ExtractPath, this)
};
oldOffsets = iso.TOC.GetFlattenedFST().ToDictionary(k => k.Name.ToString(), v => v is FSTFileEntry fe ? fe.FileDataOffset : 0);
iso.CommonRel = iso.GetFSysFile("common.fsys").GetEntryByFileName("common_rel.rel") as REL;
iso.BuildStringTables();
return(iso);
}
public void RepackISO(ISO iso, string savePath)
{
if (!savePath.EndsWith(".iso"))
{
savePath = $"{savePath}.iso";
}
using var isoStream = File.Open(savePath, FileMode.Create, FileAccess.Write);
// boot.bin, bi2.bin, appldr.bin
ISOStream.Seek(0, SeekOrigin.Begin);
ISOStream.CopySubStream(isoStream, 0, iso.DOL.Offset);
// pack dol
isoStream.Seek(iso.DOL.Offset, SeekOrigin.Begin);
using var dolStream = iso.DOL.Encode();
dolStream.CopyTo(isoStream);
int alignment = AlignByteCount(iso.DOL.Offset + (int)iso.DOL.ExtractedFile.Length);
isoStream.WriteBytesAtOffset(isoStream.Position, new byte[alignment]);
if (iso.TOC.StartDataOffset == uint.MaxValue)
{
throw new Exception("This is awkward... For some reason the TOC was never loaded.");
}
// pack fsys files
isoStream.Seek(iso.TOC.StartDataOffset, SeekOrigin.Begin);
iso.TOC.ReorderFST();
var fileEntries = iso.TOC.GetFlattenedFST().OrderBy(f => f is FSTFileEntry fe ? fe.FileDataOffset : 0).ToArray();
for (int i = 0; i < fileEntries.Length; i++)
{
var newEntry = fileEntries[i];
if (newEntry is FSTFileEntry fileEntry)
{
var fsysStartOffset = fileEntry.FileDataOffset;
var fsysSize = fileEntry.Size;
var entryFileName = fileEntry.Name.ToString();
isoStream.Seek(fileEntry.FileDataOffset, SeekOrigin.Begin);
if (iso.Files.ContainsKey(entryFileName))
{
var fsys = iso.Files[entryFileName];
using var fsysStream = fsys.Encode();
fsysStream.CopyTo(isoStream);
if (fsysStream.Length != fileEntry.Size)
{
var adjustSize = fsysStream.Length - fileEntry.Size;
if (adjustSize < 0)
{
continue;
}
fileEntry.Size = (uint)fsysStream.Length;
for (int j = i + 1; j < fileEntries.Length; j++)
{
if (fileEntries[j] is FSTFileEntry fe)
{
fe.FileDataOffset += (uint)adjustSize;
}
}
}
}
else
{
ISOStream.CopySubStream(isoStream, oldOffsets[entryFileName], fsysSize);
}
isoStream.Flush();
}
}
if (isoStream.Position < ISOStream.Length)
{
isoStream.Write(new byte[ISOStream.Length - isoStream.Position]);
}
// pack FST after to account for updates
iso.TOC.RebuildFST();
isoStream.Seek(iso.TOC.Offset, SeekOrigin.Begin);
using var tocstream = iso.TOC.Encode();
tocstream.CopyTo(isoStream);
if (isoStream.Position < iso.TOC.StartDataOffset)
{
isoStream.Write(new byte[iso.TOC.StartDataOffset - isoStream.Position]);
}
isoStream.Flush();
}