//TODO: Allow saving files in PSP2i format (using partial encrypt and deflate instead of PRS)
public void saveFile(Stream fileToWrite, bool compressNmll, bool compressTmll, bool saveUnmodified)
{
BinaryWriter beta;
if (isBigEndian)
{
beta = new BigEndianBinaryWriter(fileToWrite);
}
else
{
beta = new BinaryWriter(fileToWrite);
}
//A bit of logic just in case we're loading naked TMLL chunks for some reason.
bool startsWithNmll = (chunks[0].chunkID.StartsWith("NML"));
uint tmllHeaderLength = 0;
uint tmllLength = 0;
uint tmllCompressed = 0;
int tmllFiles = 0;
for (int i = 0; i < chunks.Count; i++)
{
if (chunks[i].chunkID.StartsWith("NML"))
{
chunks[i].compressed = compressNmll;
}
if (chunks[i].chunkID.StartsWith("TML"))
{
chunks[i].compressed = compressTmll;
}
byte[] currentChunkData = chunks[i].SaveFile(saveUnmodified);
//Fill in TMLL info for NMLL header (yep)
//Ignoring the case where you have multiple TMLLs (this is a damaged file, anyway)
if (chunks[i].chunkID.StartsWith("TML"))
{
tmllHeaderLength = BitConverter.ToUInt32(currentChunkData, 0x8);
tmllLength = BitConverter.ToUInt32(currentChunkData, 0x10);
tmllCompressed = BitConverter.ToUInt32(currentChunkData, 0x14);
tmllFiles = chunks[i].fileContents.Count;
}
beta.Write(currentChunkData);
}
if (startsWithNmll)
{
fileToWrite.Seek(0x20, SeekOrigin.Begin);
beta.Write(tmllHeaderLength);
beta.Write(tmllLength);
beta.Write(tmllCompressed);
beta.Write(tmllFiles);
}
beta.Close();
}
public byte[] SaveFile(bool discardChanges)
{
//First, combine all the files.
MemoryStream groupFileStream = new MemoryStream();
MemoryStream groupHeaderStream = new MemoryStream();
BinaryWriter groupHeaderWriter;
if (bigEndian)
{
groupHeaderWriter = new BigEndianBinaryWriter(groupHeaderStream);
}
else
{
groupHeaderWriter = new BinaryWriter(groupHeaderStream);
}
int paddingAmount = versionNumber == 0x1002 ? 0x3F : 0x7FF;
uint mask = versionNumber == 0x1002 ? 0xFFFFFFC0 : 0xFFFFF800;
if (this.chunkID.StartsWith("NML"))
{
groupHeaderStream.Seek(0x30, SeekOrigin.Begin);
}
else if (this.chunkID.StartsWith("TML"))
{
groupHeaderStream.Seek(0x20, SeekOrigin.Begin);
}
NblLoader.FileHeader[] headers = new NblLoader.FileHeader[this.fileContents.Count];
List <RawFile> savedFiles = new List <RawFile>(this.fileContents);
List <int> pointers = new List <int>();
//Annoying, this one has to be a running tally, can't do it any other way.
ushort filenamelength = 0;
for (int i = 0; i < fileContents.Count; i++)
{
//Figure out whether to take the cached copy or the original
if (this.loadedFileCache.ContainsKey(fileContents[i].filename) && !discardChanges)
{
savedFiles[i] = loadedFileCache[fileContents[i].filename].ToRawFile((uint)groupFileStream.Position);
savedFiles[i].chunkSize = fileContents[i].chunkSize;
}
else if (savedFiles[i].fileOffset != (uint)groupFileStream.Position)
{
savedFiles[i].RebaseFile((uint)groupFileStream.Position);
}
//Let's not use a FileHeader any more. Just put all the data straight into the file.
//Guessing on identifier--this SHOULD be true, generally, but...?
//This needs to be stored in the file class.
string identifier = "STD\0";
if (this.chunkID.StartsWith("TML"))
{
identifier = "NNVR";
}
else if (savedFiles[i].subHeader != null && savedFiles[i].subHeader[0] == 0x4E) //'N'--so hopefully just NXIF or NUIF
{
identifier = Path.GetExtension(savedFiles[i].filename).Substring(1).ToUpper().PadRight(4, '\0');
}
groupHeaderWriter.Write(ASCIIEncoding.ASCII.GetBytes(identifier));
groupHeaderWriter.Write(savedFiles[i].chunkSize);
groupHeaderWriter.Write((int)0); //"unknown1"
groupHeaderWriter.Write((int)0); //"unknown2"
groupHeaderWriter.Write(ASCIIEncoding.ASCII.GetBytes(savedFiles[i].filename.PadRight(0x20, '\0')));
groupHeaderWriter.Write(savedFiles[i].fileOffset);
groupHeaderWriter.Write(savedFiles[i].fileContents.Length);
groupHeaderWriter.Write(pointers.Count * 4);
groupHeaderWriter.Write(savedFiles[i].pointers.Count * 4);
if (savedFiles[i].subHeader == null)
{
groupHeaderWriter.Write(new byte[0x20]);
}
else
{
groupHeaderWriter.Write(savedFiles[i].subHeader);
}
//Update filename length (include \0 terminator).
if (this.chunkID.StartsWith("NML"))
{
filenamelength += (ushort)(savedFiles[i].filename.Length + 1);
}
//Now put the data into the file pieces.
groupFileStream.Write(savedFiles[i].fileContents, 0, savedFiles[i].fileContents.Length);
//Padding out to nearest 0x10
groupFileStream.Seek((int)(groupFileStream.Position + 0x1F) & 0xFFFFFFE0, SeekOrigin.Begin);
pointers.AddRange(savedFiles[i].pointers);
}
int headerLength = (int)groupHeaderStream.Position;
groupHeaderStream.Seek((groupHeaderStream.Position + paddingAmount) & mask, SeekOrigin.Begin);
int uncompressedSize = (int)groupFileStream.Position;
byte[] rawData;
if (compressed)
{
if (versionNumber == 0x1002) // PSP2 files use Deflate.
{
groupFileStream.Seek(0, SeekOrigin.Begin);
MemoryStream compressedStream = new MemoryStream();
using (DeflateStream ds = new DeflateStream(compressedStream, CompressionMode.Compress))
{
groupFileStream.CopyTo(ds);
}
rawData = compressedStream.ToArray();
}
else //PSU uses PRS.
{
rawData = PrsCompDecomp.compress(groupFileStream.ToArray());
}
}
else
{
rawData = groupFileStream.ToArray();
}
int fileLength = rawData.Length;
groupHeaderWriter.Write(rawData);
//Write out pointers (if applicable)
groupHeaderStream.Seek((groupHeaderStream.Position + paddingAmount) & mask, SeekOrigin.Begin);
for (int i = 0; i < pointers.Count; i++)
{
groupHeaderWriter.Write(pointers[i]);
}
groupHeaderWriter.Write(new byte[((groupHeaderStream.Position + paddingAmount) & mask) - groupHeaderStream.Position]);
//Now fill in the header (leaving the space if necessary).
groupHeaderStream.Seek(0, SeekOrigin.Begin);
groupHeaderWriter.Write(ASCIIEncoding.ASCII.GetBytes(this.chunkID));
groupHeaderWriter.Write(this.versionNumber);
groupHeaderWriter.Write(filenamelength);
groupHeaderWriter.Write(headerLength);
groupHeaderWriter.Write(this.fileContents.Count);
groupHeaderWriter.Write(uncompressedSize);
if (compressed)
{
groupHeaderWriter.Write(rawData.Length);
}
else
{
groupHeaderWriter.Write((int)0);
}
groupHeaderWriter.Write(pointers.Count * 4);
groupHeaderWriter.Write((int)0); //Still enforcing no encryption.
return(groupHeaderStream.ToArray());
}