private IList <IArchiveFileInfo> LoadSwitch(Stream input)
{
using var br = new BinaryReaderX(input, true);
// Read header
_header = br.ReadType <MtHeader>();
// Read entries
var entries = br.ReadMultiple <MtEntrySwitch>(_header.entryCount);
// Add files
var result = new List <IArchiveFileInfo>();
foreach (var entry in entries)
{
var fileStream = new SubStream(input, entry.Offset, entry.CompSize);
var fileName = entry.FileName.TrimEnd('\0') + MtArcSupport.DetermineExtension(entry.ExtensionHash);
// It seems every file is compressed with ZLib on Switch
// Reasoning: Example file game.arc contains of at least one file "om120a" where compressed and uncompressed size are equal but the file is still compressed
// the decompressed file is really the same size; comparing with other entries no clear differences were found, that would indicate a
// compression flag
result.Add(new MtArchiveFileInfo(fileStream, fileName, entry, Kompression.Implementations.Compressions.ZLib, entry.GetDecompressedSize(_platform)));
}
return(result);
}
private IList <IArchiveFileInfo> LoadLittleEndian(Stream input)
{
using var br = new BinaryReaderX(input, true);
// Read header
_header = br.ReadType <MtHeader>();
// Skip additional int under certain conditions
if (_header.version != 7 && _header.version != 8)
{
br.ReadInt32();
}
// Read entries
var entries = br.ReadMultiple <MtEntry>(_header.entryCount);
// Add files
var result = new List <IArchiveFileInfo>();
foreach (var entry in entries)
{
var fileStream = new SubStream(input, entry.Offset, entry.CompSize);
var fileName = entry.FileName.TrimEnd('\0') + MtArcSupport.DetermineExtension(entry.ExtensionHash);
result.Add(CreateAfi(fileStream, fileName, entry, _platform));
}
return(result);
}
public IList <IArchiveFileInfo> Load(Stream input)
{
using var br = new BinaryReaderX(input, true);
// Read header
_header = br.ReadType <MtHeader>();
// Read entries
var key = GetCipherKey("imaguy_uyrag_igurustim_", "enokok_ikorodo_odohuran");
var entryStream = new MtBlowfishStream(new SubStream(input, HeaderSize, _header.entryCount * EntrySize), key);
using var entryBr = new BinaryReaderX(entryStream);
var entries = entryBr.ReadMultiple <MtEntry>(_header.entryCount);
// Add files
var result = new List <IArchiveFileInfo>();
foreach (var entry in entries)
{
var fileStream = new MtBlowfishStream(new SubStream(input, entry.Offset, entry.CompSize), key);
var name = entry.FileName + MtArcSupport.DetermineExtension(entry.ExtensionHash);
result.Add(MtArc.CreateAfi(fileStream, name, entry, MtArcPlatform.LittleEndian));
}
return(result);
}
public IList <IArchiveFileInfo> Load(Stream input)
{
_isEncrypted = IsEncrypted(input);
var key = GetCipherKey("imaguy_uyrag_igurustim_", "enokok_ikorodo_odohuran");
using var br = new BinaryReaderX(input, true);
// Determine byte order
var magic = br.ReadString(4);
br.ByteOrder = _byteOrder = magic == "\0CRA" ? ByteOrder.BigEndian : ByteOrder.LittleEndian;
input.Position -= 4;
// Header
_header = br.ReadType <MtHeader>();
// Determine possible platform the arc was found on
_platform = MtArcSupport.DeterminePlatform(_byteOrder, _header);
// Skip additional int under certain conditions
if (_byteOrder == ByteOrder.LittleEndian && _header.version != 7 && _header.version != 8 && _header.version != 9)
{
br.ReadInt32();
}
// Read entries
Stream entryStream = new SubStream(input, br.BaseStream.Position, input.Length - br.BaseStream.Position);
if (_isEncrypted)
{
entryStream = new MtBlowfishStream(entryStream, key);
}
using var entryBr = new BinaryReaderX(entryStream);
var entries = entryBr.ReadMultiple(_header.entryCount, _header.version == 9 ? typeof(MtEntrySwitch) : typeof(MtEntry)).Cast <IMtEntry>();
// Add files
var result = new List <IArchiveFileInfo>();
foreach (var entry in entries)
{
Stream subStream = new SubStream(input, entry.Offset, entry.CompSize);
var fileName = entry.FileName.TrimEnd('\0') + MtArcSupport.DetermineExtension(entry.ExtensionHash);
if (_isEncrypted)
{
subStream = new MtBlowfishStream(subStream, key);
}
result.Add(CreateAfi(subStream, fileName, entry, _platform));
}
return(result);
}
private IList <IArchiveFileInfo> LoadBigEndian(Stream input)
{
using var br = new BinaryReaderX(input, true, ByteOrder.BigEndian);
// Read header
_header = br.ReadType <MtHeader>();
// Read entries
var entries = br.ReadMultiple <MtEntry>(_header.entryCount);
// Add files
var result = new List <IArchiveFileInfo>();
foreach (var entry in entries)
{
var fileStream = new SubStream(input, entry.Offset, entry.CompSize);
var fileName = entry.FileName.TrimEnd('\0') + MtArcSupport.DetermineExtension(entry.ExtensionHash);
result.Add(CreateAfi(fileStream, fileName, entry, _platform));
}
return(result);
}
