public SARC(Stream input)
{
_stream = input;
using (var br = new BinaryReaderX(input, true))
{
//Get ByteOrder
br.BaseStream.Position = 0x6;
byteOrder = (ByteOrder)br.ReadUInt16();
br.BaseStream.Position = 0;
br.ByteOrder = byteOrder;
//Header
Header = br.ReadStruct <SARCHeader>();
//FAT
var sfatHeader = br.ReadStruct <SFATHeader>();
var sfatEntries = br.ReadMultiple <SFATEntry>(sfatHeader.nodeCount).ToList();
hashMultiplier = (uint)sfatHeader.hashMultiplier;
//FNT
SFNTHeader = br.ReadStruct <SFNTHeader>();
var sfntOffset = br.BaseStream.Position;
//is FNT used?
usesSFNT = sfatEntries.Any(entry => (entry.SFNTOffsetFlag >> 16) == 0x100);
Files = sfatEntries.Select(entry =>
{
Support.extensions.TryGetValue(br.PeekString((uint)(Header.dataOffset + entry.dataStart), 4), out var getExt);
if (getExt == null)
{
Support.extensions.TryGetValue(br.PeekString((uint)(Header.dataOffset + entry.dataEnd - 0x28), 4), out getExt);
}
br.BaseStream.Position = ((entry.SFNTOffsetFlag & 0xffff) << 2) + sfntOffset;
var filename = usesSFNT ? br.ReadCStringA() : $"0x{entry.nameHash:X8}" + ((getExt == null) ? ".bin" : getExt);
return(new SarcArchiveFileInfo
{
Entry = entry,
FileName = filename,
FileData = new SubStream(input, Header.dataOffset + entry.dataStart, entry.dataEnd - entry.dataStart),
State = ArchiveFileState.Archived,
Hash = entry.nameHash
});
}).ToList();
}
}
public void Save(Stream output, bool leaveOpen = false)
{
using (var bw = new BinaryWriterX(output, leaveOpen, byteOrder))
{
//Create SARCHeader
var header = new SARCHeader
{
byteOrder = byteOrder,
dataOffset = Files.Aggregate(
0x14 + 0xc + 0x8 + Files.Sum(afi => usesSFNT ? ((afi.FileName.Length + 4) & ~3) + 0x10 : 0x10),
(n, file) => Support.Pad(n, file.FileName, (byteOrder == ByteOrder.LittleEndian) ? System.CTR : System.WiiU))
};
//SFATHeader
bw.BaseStream.Position = 0x14;
bw.WriteStruct(new SFATHeader
{
hashMultiplier = (int)hashMultiplier,
nodeCount = (short)Files.Count
});
//SFAT List + nameList
int nameOffset = 0;
int dataOffset = 0;
foreach (var afi in Files)
{
dataOffset = Support.Pad(dataOffset, afi.FileName, (byteOrder == ByteOrder.LittleEndian) ? System.CTR : System.WiiU);
var fileLen = (int)afi.FileData.Length;
var sfatEntry = new SFATEntry
{
nameHash = usesSFNT ? SimpleHash.Create(afi.FileName, hashMultiplier) : Convert.ToUInt32(afi.FileName.Substring(2, 8), 16),
SFNTOffsetFlag = (uint)(((usesSFNT ? 0x100 : 0) << 16) | (usesSFNT ? nameOffset / 4 : 0)),
dataStart = dataOffset,
dataEnd = dataOffset + fileLen
};
bw.WriteStruct(sfatEntry);
nameOffset = (nameOffset + afi.FileName.Length + 4) & ~3;
dataOffset = sfatEntry.dataEnd;
}
//SFNT
bw.WriteStruct(new SFNTHeader());
if (usesSFNT)
{
foreach (var afi in Files)
{
bw.WriteASCII(afi.FileName + "\0");
bw.BaseStream.Position = (bw.BaseStream.Position + 3) & ~3;
}
}
//FileData
bw.WriteAlignment(header.dataOffset);
foreach (var afi in Files)
{
bw.WriteAlignment(Support.Pad((int)bw.BaseStream.Length, afi.FileName, (byteOrder == ByteOrder.LittleEndian) ? System.CTR : System.WiiU)); //(unusual) padding scheme through filenames
afi.FileData.CopyTo(bw.BaseStream);
}
bw.BaseStream.Position = 0;
header.fileSize = (int)bw.BaseStream.Length;
bw.WriteStruct(header);
}
}
