public static void create(string[] _inNames, CopyOnlyStream[] _inStreams, string outputPath)
{
bool _usingFilenames = (_inNames != null);
NarcArchiveRootDirectoryEntry _root = new NarcArchiveRootDirectoryEntry();
if (_usingFilenames)
{
// make all the parent directory thingies and then shove the file entries into them.
for (int i = 0; i < _inStreams.Length; ++i)
{
NarcArchiveDirectoryEntry _curParent = _root;
int _startSearchIndex = 0;
while (true)
{
int _nextSlashIndex = _inNames[i].IndexOf('/', _startSearchIndex, _inNames[i].Length - _startSearchIndex);
if (_nextSlashIndex != -1)
{
String _curFolderName = _inNames[i].Substring(_startSearchIndex, _nextSlashIndex - _startSearchIndex);
_curParent = insertFolderInto(_curParent, _curFolderName);
_startSearchIndex = _nextSlashIndex + 1;
}
else
{
break;
}
}
_curParent.Entries.Add(new NarcArchiveFileEntry {
dataStream = _inStreams[i], Name = Path.GetFileName(_inNames[i])
});
}
}
else
{
for (int i = 0; i < _inStreams.Length; ++i)
{
_root.Entries.Add(new NarcArchiveFileEntry {
dataStream = _inStreams[i]
});
}
}
lowCreate(_root, outputPath, _usingFilenames);
}
public static void lowCreate(NarcArchiveRootDirectoryEntry rootDirectory, string outputPath, bool hasFilenames = true)
{
var directories = new List <NarcArchiveDirectoryEntry>
{
rootDirectory,
};
var files = new List <NarcArchiveFileEntry>();
var directoryIndex = 1; // The root directory index is always 0.
var fileIndex = 0;
var position = 0;
for (var i = 0; i < directories.Count; i++) // We'll be modifying directories during the loop, so we can't use a foreach loop here.
{
foreach (var entry in directories[i].Entries)
{
if (entry is NarcArchiveDirectoryEntry directoryEntry)
{
directoryEntry.Index = directoryIndex;
directoryEntry.FirstFileIndex = fileIndex;
directories.Add(directoryEntry);
directoryIndex++;
}
else if (entry is NarcArchiveFileEntry fileEntry)
{
var length = (int)fileEntry.dataStream.getLength();
fileEntry.Index = fileIndex;
fileEntry.Offset = position;
fileEntry.Length = length;
position += ((length + 3) / 4) * 4; // Offsets must be a multiple of 4
files.Add(fileEntry);
fileIndex++;
}
}
}
var fimgLength = position;
using (var output = new FileStream(outputPath, FileMode.Create, FileAccess.Write))
using (var writer = new BinaryWriter(output))
{
// Write out the NARC header
writer.Write((byte)'N');
writer.Write((byte)'A');
writer.Write((byte)'R');
writer.Write((byte)'C');
writer.Write((byte)0xFE);
writer.Write((byte)0xFF);
writer.Write((byte)0);
writer.Write((byte)1);
writer.Write(0); // File length (will be written to later)
writer.Write((short)16); // Header length (always 16)
writer.Write((short)3); // Number of sections (always 3)
// Write out the FATB section
writer.Write((byte)'B');
writer.Write((byte)'T');
writer.Write((byte)'A');
writer.Write((byte)'F');
writer.Write(12 + (files.Count * 8)); // Section length
writer.Write(files.Count); // Number of file entries
foreach (var file in files)
{
writer.Write(file.Offset); // Start position
writer.Write(file.Offset + file.Length); // End position
}
// Write out the FNTB section
writer.Write((byte)'B');
writer.Write((byte)'T');
writer.Write((byte)'N');
writer.Write((byte)'F');
if (hasFilenames)
{
var fntbPosition = (int)output.Position - 4;
writer.Write(0); // Section length (will be written to later)
writer.Write(0); // Name entry offset for the root directory (will be written to later)
writer.Write((short)0); // First file index (always 0)
writer.Write((short)directories.Count); // Number of directories, including the root directory
for (var i = 1; i < directories.Count; i++)
{
writer.Write(0); // Name entry offset for this directory (will be written to later)
writer.Write((short)directories[i].FirstFileIndex); // Index of the first file in this directory
writer.Write((short)(directories[i].Parent.Index | 0xF000)); // Parent directory
}
position = directories.Count * 8;
foreach (var directory in directories)
{
directory.NameEntryOffset = position;
foreach (var entry in directory.Entries)
{
var nameAsBytes = Encoding.UTF8.GetBytes(entry.Name);
if (entry is NarcArchiveDirectoryEntry directoryEntry)
{
writer.Write((byte)(nameAsBytes.Length | 0x80)); // Length of the directory name
writer.Write(nameAsBytes);
writer.Write((short)(directoryEntry.Index | 0xF000));
position += nameAsBytes.Length + 3;
}
else if (entry is NarcArchiveFileEntry fileEntry)
{
writer.Write((byte)nameAsBytes.Length); // Length of the file name
writer.Write(nameAsBytes);
position += nameAsBytes.Length + 1;
}
}
writer.Write((byte)0);
position++;
}
while (output.Length % 4 != 0)
{
writer.Write((byte)0xFF);
}
var fntbLength = (int)output.Position - fntbPosition;
// Go back and write the name entry offsets for each directory
output.Position = fntbPosition + 4;
writer.Write(fntbLength);
foreach (var directory in directories)
{
writer.Write(directory.NameEntryOffset);
output.Position += 4;
}
output.Position = fntbPosition + fntbLength;
}
else
{
// The FNTB section is always the same if there are no filenames
writer.Write(16); // Section length (always 16)
writer.Write(4); // Always 4
writer.Write((short)0); // First file index (always 0)
writer.Write((short)1); // Number of directories, including the root directory (always 1)
}
// Write out the FIMG section
writer.Write((byte)'G');
writer.Write((byte)'M');
writer.Write((byte)'I');
writer.Write((byte)'F');
writer.Write(fimgLength + 8); // Section length
foreach (var file in files)
{
file.dataStream.CopyTo(output);
while (output.Length % 4 != 0)
{
writer.Write((byte)0xFF);
}
}
// Go back and write out the file length
output.Position = 8;
writer.Write((int)output.Length); // File length
output.Position = output.Length;
}
}
// returns tuple with:
// fimgPosition
// hasFilenames
// fileEntries
public static Tuple <long, bool, List <NarcArchiveFileEntry> > startReadingNarc(FileStream input, BinaryReader reader, string inputPathForErrorMessages, bool ignoreFilenames)
{
// Read the NARC header
if (!(reader.ReadByte() == 'N' &&
reader.ReadByte() == 'A' &&
reader.ReadByte() == 'R' &&
reader.ReadByte() == 'C' &&
reader.ReadByte() == 0xFE &&
reader.ReadByte() == 0xFF &&
reader.ReadByte() == 0 &&
reader.ReadByte() == 1 &&
reader.ReadInt32() == input.Length))
{
throw new InvalidFileTypeException(string.Format(ErrorMessages.NotANarcFile, Path.GetFileName(inputPathForErrorMessages)));
}
var headerLength = reader.ReadInt16();
var fatbPosition = headerLength;
// Read the FATB section
input.Position = fatbPosition;
if (!(reader.ReadByte() == 'B' &&
reader.ReadByte() == 'T' &&
reader.ReadByte() == 'A' &&
reader.ReadByte() == 'F'))
{
throw new InvalidFileTypeException(string.Format(ErrorMessages.NotANarcFile, Path.GetFileName(inputPathForErrorMessages)));
}
var fatbLength = reader.ReadInt32();
var fntbPosition = fatbPosition + fatbLength;
var fileEntryCount = reader.ReadInt32();
var fileEntries = new List <NarcArchiveFileEntry>(fileEntryCount);
for (var i = 0; i < fileEntryCount; i++)
{
var offset = reader.ReadInt32();
var length = reader.ReadInt32() - offset;
fileEntries.Add(new NarcArchiveFileEntry
{
Offset = offset,
Length = length,
});
}
// Read the FNTB section
input.Position = fntbPosition;
if (!(reader.ReadByte() == 'B' &&
reader.ReadByte() == 'T' &&
reader.ReadByte() == 'N' &&
reader.ReadByte() == 'F'))
{
throw new InvalidFileTypeException(string.Format(ErrorMessages.NotANarcFile, Path.GetFileName(inputPathForErrorMessages)));
}
var fntbLength = reader.ReadInt32();
long fimgPosition = fntbPosition + fntbLength;
var hasFilenames = !ignoreFilenames;
// If the FNTB length is 16 or less, it's impossible for the entries to have filenames.
// This section will always be at least 16 bytes long, but technically it's only required to be at least 8 bytes long.
if (fntbLength <= 16)
{
hasFilenames = false;
}
var rootNameEntryOffset = reader.ReadInt32();
// If the root name entry offset is 4, then the entries don't have filenames.
if (rootNameEntryOffset == 4)
{
hasFilenames = false;
}
if (hasFilenames)
{
var rootFirstFileIndex = reader.ReadInt16();
var rootDirectory = new NarcArchiveRootDirectoryEntry();
var directoryEntryCount = reader.ReadInt16(); // This includes the root directory
var directoryEntries = new List <NarcArchiveDirectoryEntry>(directoryEntryCount)
{
rootDirectory,
};
// This NARC contains filenames and directory names, so read them
for (var i = 1; i < directoryEntryCount; i++)
{
var nameEntryTableOffset = reader.ReadInt32();
var firstFileIndex = reader.ReadInt16();
var parentDirectoryIndex = reader.ReadInt16() & 0xFFF;
directoryEntries.Add(new NarcArchiveDirectoryEntry
{
Index = i,
Parent = directoryEntries[parentDirectoryIndex],
NameEntryOffset = nameEntryTableOffset,
FirstFileIndex = firstFileIndex,
});
}
NarcArchiveDirectoryEntry currentDirectory = rootDirectory;
var directoryIndex = 0;
var fileIndex = 0;
while (directoryIndex < directoryEntryCount)
{
var entryNameLength = reader.ReadByte();
if ((entryNameLength & 0x80) != 0)
{
// This is a directory name entry
var entryName = reader.ReadString(entryNameLength & 0x7F);
var entryDirectoryIndex = reader.ReadInt16() & 0xFFF;
var directoryEntry = directoryEntries[entryDirectoryIndex];
directoryEntry.Name = entryName;
}
else if (entryNameLength != 0)
{
// This is a file name entry
var entryName = reader.ReadString(entryNameLength);
var fileEntry = fileEntries[fileIndex];
fileEntry.Parent = directoryEntries[directoryIndex];
fileEntry.Name = entryName;
fileIndex++;
}
else
{
// This is the end of a directory
directoryIndex++;
if (directoryIndex >= directoryEntryCount)
{
break;
}
currentDirectory = directoryEntries[directoryIndex];
}
}
}
return(new Tuple <long, bool, List <NarcArchiveFileEntry> >(fimgPosition, hasFilenames, fileEntries));
}
public static void Extract(string inputPath, string outputPath, bool ignoreFilenames = false, bool _justPrintNames = false)
{
using (var input = new FileStream(inputPath, FileMode.Open, FileAccess.Read))
using (var reader = new BinaryReader(input))
{
// Read the NARC header
if (!(reader.ReadByte() == 'N' &&
reader.ReadByte() == 'A' &&
reader.ReadByte() == 'R' &&
reader.ReadByte() == 'C' &&
reader.ReadByte() == 0xFE &&
reader.ReadByte() == 0xFF &&
reader.ReadByte() == 0 &&
reader.ReadByte() == 1 &&
reader.ReadInt32() == input.Length))
{
throw new InvalidFileTypeException(string.Format(ErrorMessages.NotANarcFile, Path.GetFileName(inputPath)));
}
var headerLength = reader.ReadInt16();
var fatbPosition = headerLength;
// Read the FATB section
input.Position = fatbPosition;
if (!(reader.ReadByte() == 'B' &&
reader.ReadByte() == 'T' &&
reader.ReadByte() == 'A' &&
reader.ReadByte() == 'F'))
{
throw new InvalidFileTypeException(string.Format(ErrorMessages.NotANarcFile, Path.GetFileName(inputPath)));
}
var fatbLength = reader.ReadInt32();
var fntbPosition = fatbPosition + fatbLength;
var fileEntryCount = reader.ReadInt32();
var fileEntries = new List <NarcArchiveFileEntry>(fileEntryCount);
for (var i = 0; i < fileEntryCount; i++)
{
var offset = reader.ReadInt32();
var length = reader.ReadInt32() - offset;
fileEntries.Add(new NarcArchiveFileEntry
{
Offset = offset,
Length = length,
});
}
// Read the FNTB section
input.Position = fntbPosition;
if (!(reader.ReadByte() == 'B' &&
reader.ReadByte() == 'T' &&
reader.ReadByte() == 'N' &&
reader.ReadByte() == 'F'))
{
throw new InvalidFileTypeException(string.Format(ErrorMessages.NotANarcFile, Path.GetFileName(inputPath)));
}
var fntbLength = reader.ReadInt32();
var fimgPosition = fntbPosition + fntbLength;
var hasFilenames = !ignoreFilenames;
// If the FNTB length is 16 or less, it's impossible for the entries to have filenames.
// This section will always be at least 16 bytes long, but technically it's only required to be at least 8 bytes long.
if (fntbLength <= 16)
{
hasFilenames = false;
}
var rootNameEntryOffset = reader.ReadInt32();
// If the root name entry offset is 4, then the entries don't have filenames.
if (rootNameEntryOffset == 4)
{
hasFilenames = false;
}
if (hasFilenames)
{
var rootFirstFileIndex = reader.ReadInt16();
var rootDirectory = new NarcArchiveRootDirectoryEntry();
var directoryEntryCount = reader.ReadInt16(); // This includes the root directory
var directoryEntries = new List <NarcArchiveDirectoryEntry>(directoryEntryCount)
{
rootDirectory,
};
// This NARC contains filenames and directory names, so read them
for (var i = 1; i < directoryEntryCount; i++)
{
var nameEntryTableOffset = reader.ReadInt32();
var firstFileIndex = reader.ReadInt16();
var parentDirectoryIndex = reader.ReadInt16() & 0xFFF;
directoryEntries.Add(new NarcArchiveDirectoryEntry
{
Index = i,
Parent = directoryEntries[parentDirectoryIndex],
NameEntryOffset = nameEntryTableOffset,
FirstFileIndex = firstFileIndex,
});
}
NarcArchiveDirectoryEntry currentDirectory = rootDirectory;
var directoryIndex = 0;
var fileIndex = 0;
while (directoryIndex < directoryEntryCount)
{
var entryNameLength = reader.ReadByte();
if ((entryNameLength & 0x80) != 0)
{
// This is a directory name entry
var entryName = reader.ReadString(entryNameLength & 0x7F);
var entryDirectoryIndex = reader.ReadInt16() & 0xFFF;
var directoryEntry = directoryEntries[entryDirectoryIndex];
directoryEntry.Name = entryName;
if (_justPrintNames)
{
Console.WriteLine("Dir: " + entryName);
}
}
else if (entryNameLength != 0)
{
// This is a file name entry
var entryName = reader.ReadString(entryNameLength);
var fileEntry = fileEntries[fileIndex];
fileEntry.Directory = directoryEntries[directoryIndex];
fileEntry.Name = entryName;
fileIndex++;
if (_justPrintNames)
{
Console.WriteLine(entryName);
}
}
else
{
// This is the end of a directory
directoryIndex++;
if (directoryIndex >= directoryEntryCount)
{
break;
}
currentDirectory = directoryEntries[directoryIndex];
}
}
}
if (_justPrintNames)
{
return;
}
// Read the FIMG section
input.Position = fimgPosition;
if (!(reader.ReadByte() == 'G' &&
reader.ReadByte() == 'M' &&
reader.ReadByte() == 'I' &&
reader.ReadByte() == 'F'))
{
throw new InvalidFileTypeException(string.Format(ErrorMessages.NotANarcFile, Path.GetFileName(inputPath)));
}
if (hasFilenames)
{
foreach (var fileEntry in fileEntries)
{
var entryOutputPath = Path.Combine(outputPath, fileEntry.FullName);
var entryOutputDirectory = Path.GetDirectoryName(entryOutputPath);
if (!Directory.Exists(entryOutputDirectory))
{
Directory.CreateDirectory(entryOutputDirectory);
}
using (var output = new FileStream(entryOutputPath, FileMode.Create, FileAccess.Write))
using (var entryStream = new SubReadStream(input, fimgPosition + 8 + fileEntry.Offset, fileEntry.Length))
{
entryStream.CopyTo(output);
}
}
}
else
{
// This NARC doesn't contain filenames and directory names, so just use a file index as their filename
var index = 0;
var numOfDigits = Math.Floor(Math.Log10(fileEntryCount) + 1);
foreach (var fileEntry in fileEntries)
{
var entryName = $"{Path.GetFileNameWithoutExtension(inputPath)}_{index.ToString($"D{numOfDigits}")}";
var entryOutputPath = Path.Combine(outputPath, entryName);
if (!Directory.Exists(outputPath))
{
Directory.CreateDirectory(outputPath);
}
using (var output = new FileStream(entryOutputPath, FileMode.Create, FileAccess.Write))
using (var entryStream = new SubReadStream(input, fimgPosition + 8 + fileEntry.Offset, fileEntry.Length))
{
entryStream.CopyTo(output);
}
index++;
}
}
}
}
