// Create a new ROM.
public ROM(string filePath, string conversionPath)
{
// Build system.
if (!conversionPath.Equals(""))
{
Directory.CreateDirectory(conversionPath);
ConversionInfo = new ConversionInfo(conversionPath);
}
// Read the file.
using (Stream s = new FileStream(filePath, FileMode.Open)) {
// Read general data.
BinaryReader r = new BinaryReader(s);
GameTitle = r.ReadFixedLen(0xC);
GameCode = r.ReadFixedLen(0x4);
MakerCode = r.ReadFixedLen(0x2);
UnitCode = (UnitCode)r.ReadByte();
EncryptionSeedSelect = r.ReadByte();
DeviceCapacity = r.ReadByte();
r.ReadBytes(7);
Revision = r.ReadUInt16();
Version = r.ReadByte();
Flags = r.ReadByte();
uint arm9Offset = r.ReadUInt32();
Arm9EntryAddress = r.ReadUInt32();
Arm9LoadAddress = r.ReadUInt32();
uint arm9Size = r.ReadUInt32();
uint arm7Offset = r.ReadUInt32();
Arm7EntryAddress = r.ReadUInt32();
Arm7LoadAddress = r.ReadUInt32();
uint arm7Size = r.ReadUInt32();
uint fntOffset = r.ReadUInt32();
uint fntSize = r.ReadUInt32();
uint fatOffset = r.ReadUInt32();
uint fatSize = r.ReadUInt32();
uint arm9OverlayOffset = r.ReadUInt32();
uint arm9OverlayLength = r.ReadUInt32();
uint arm7OverlayOffset = r.ReadUInt32();
uint arm7OverlayLength = r.ReadUInt32();
NormalCardControlRegisterSettings = r.ReadUInt32();
SecureCardControlRegisterSettings = r.ReadUInt32();
uint iconBannerOffset = r.ReadUInt32();
SecureAreaCRC = r.ReadUInt16();
SecureTransferTimeout = r.ReadUInt16();
Arm9Autoload = r.ReadUInt32();
Arm7Autoload = r.ReadUInt32();
SecureDisable = r.ReadUInt64();
uint romSize = r.ReadUInt32() + 0x88;
HeaderSize = r.ReadUInt32();
// Read logo.
r.BaseStream.Position = 0xC0;
NintendoLogo = r.ReadBytes(0x9C);
r.ReadUInt16(); // Nintendo logo CRC. It is literally just the CRC of the logo.
r.ReadUInt16(); // Header CRC. It is the CRC of everything up to this point (0 to 0x15E).
// Get banner.
r.BaseStream.Position = iconBannerOffset;
ushort bannerVersion = r.ReadUInt16();
r.BaseStream.Position -= 2;
Banner = r.ReadBytes((int)BANNER_LENGTHS[bannerVersion]);
// Code binaries.
r.BaseStream.Position = arm9Offset;
Arm9 = r.ReadBytes((int)arm9Size);
r.BaseStream.Position = arm7Offset;
Arm7 = r.ReadBytes((int)arm7Size);
// Get overlays.
Arm9Overlays = Overlay.LoadOverlays(r, arm9OverlayOffset, arm9OverlayLength);
Arm7Overlays = Overlay.LoadOverlays(r, arm7OverlayOffset, arm7OverlayLength);
for (int i = 0; i < Arm9Overlays.Count; i++)
{
r.BaseStream.Position = fatOffset + Arm9Overlays[i].FileId * 8;
uint fileStart = r.ReadUInt32();
uint fileEnd = r.ReadUInt32();
r.BaseStream.Position = fileStart;
Arm9Overlays[i].Data = r.ReadBytes((int)(fileEnd - fileStart));
}
for (int i = 0; i < Arm7Overlays.Count; i++)
{
r.BaseStream.Position = fatOffset + Arm7Overlays[i].FileId * 8;
uint fileStart = r.ReadUInt32();
uint fileEnd = r.ReadUInt32();
r.BaseStream.Position = fileStart;
Arm7Overlays[i].Data = r.ReadBytes((int)(fileEnd - fileStart));
}
// Read filesystem.
Filesystem = new Filesystem(r, fntOffset, fntSize, fatOffset, fatSize, !conversionPath.Equals(""), ConversionInfo);
// Dispose.
r.Dispose();
}
}
// Pack a ROM.
public void Pack(string romFolder)
{
// File reading content.
byte[] ReadFile(string path)
{
return(System.IO.File.ReadAllBytes(romFolder + "/" + path));
}
string[] ReadFileList(string path)
{
return(System.IO.File.ReadAllLines(romFolder + "/" + path));
}
T ReadJSON <T>(string path)
{
return(JsonConvert.DeserializeObject <T>(System.IO.File.ReadAllText(romFolder + "/" + path)));
}
List <ushort> validFileIds = new List <ushort>();
void VerifyFiles(IEnumerable <ushort> fileIds)
{
foreach (var u in fileIds)
{
if (validFileIds.Contains(u))
{
throw new Exception("ERROR: Duplicate overlay file ID in use: 0x" + u.ToString("X"));
}
else
{
validFileIds.Add(u);
}
}
}
// Get header info and copy it.
ROM headerInfo = ReadJSON <ROM>("__ROM__/header.json");
GameTitle = headerInfo.GameTitle;
GameCode = headerInfo.GameCode;
MakerCode = headerInfo.MakerCode;
UnitCode = headerInfo.UnitCode;
EncryptionSeedSelect = headerInfo.EncryptionSeedSelect;
DeviceCapacity = headerInfo.DeviceCapacity;
Revision = headerInfo.Revision;
Version = headerInfo.Version;
Flags = headerInfo.Flags;
Arm9EntryAddress = headerInfo.Arm9EntryAddress;
Arm9LoadAddress = headerInfo.Arm9LoadAddress;
Arm7EntryAddress = headerInfo.Arm7EntryAddress;
Arm7LoadAddress = headerInfo.Arm7LoadAddress;
NormalCardControlRegisterSettings = headerInfo.NormalCardControlRegisterSettings;
SecureCardControlRegisterSettings = headerInfo.SecureCardControlRegisterSettings;
SecureAreaCRC = headerInfo.SecureAreaCRC;
SecureTransferTimeout = headerInfo.SecureTransferTimeout;
Arm9Autoload = headerInfo.Arm9Autoload;
Arm7Autoload = headerInfo.Arm7Autoload;
SecureDisable = headerInfo.SecureDisable;
HeaderSize = headerInfo.HeaderSize;
// Get the Nintendo logo and banner.
NintendoLogo = ReadFile("__ROM__/nintendoLogo.bin");
Banner = ReadFile("__ROM__/banner.bin");
// Fetch Arm payloads.
Arm9 = ReadFile("__ROM__/arm9.bin");
Arm7 = ReadFile("__ROM__/arm7.bin");
// Get overlays.
Arm9Overlays = ReadJSON <List <Overlay> >("__ROM__/arm9Overlays.json");
VerifyFiles(Arm9Overlays.Select(x => x.FileId));
Arm7Overlays = ReadJSON <List <Overlay> >("__ROM__/arm7Overlays.json");
VerifyFiles(Arm7Overlays.Select(x => x.FileId));
foreach (var o in Arm9Overlays)
{
o.Data = ReadFile("__ROM__/Arm9/" + o.Id + ".bin");
}
foreach (var o in Arm7Overlays)
{
o.Data = ReadFile("__ROM__/Arm7/" + o.Id + ".bin");
}
// Read files.
ushort currFolderId = 1;
string[] fileList = ReadFileList("__ROM__/files.txt");
Dictionary <string, Folder> folders = new Dictionary <string, Folder>();
Filesystem = new Filesystem();
folders.Add("", Filesystem);
foreach (var s in fileList)
{
AddFileToFilesystem(s);
}
// Add a file to the filesystem.
void AddFileToFilesystem(string s)
{
// First get its properties.
string[] fileProperties = s.Split(' ');
string filePath = fileProperties[0];
if (!filePath.StartsWith("../"))
{
throw new Exception("ERROR: All files must be relative to parent directory \"../\"");
}
else
{
filePath = filePath.Substring(3);
}
// Get file ID.
ushort fileId = (ushort)Helper.ReadStringNumber(fileProperties[1]);
if (validFileIds.Contains(fileId))
{
throw new Exception("ERROR: File ../" + filePath + " uses duplicate file ID 0x" + fileId.ToString("X"));
}
else
{
validFileIds.Add(fileId);
}
// Proper file name and folder path.
string fileName = filePath;
string folderPath = "";
while (fileName.Contains('/'))
{
folderPath += "/" + fileName.Substring(0, fileName.IndexOf('/'));
fileName = fileName.Substring(fileName.IndexOf('/') + 1);
}
if (folderPath.StartsWith("/"))
{
folderPath = folderPath.Substring(1);
}
// New file.
File f = new File();
f.Name = fileName;
f.Id = fileId;
f.Data = new GenericFile()
{
Data = ReadFile(filePath)
};
// Finally add the file to the folder.
AddFileToFolder(f, folderPath);
}
// Add a file to a folder.
void AddFileToFolder(File f, string folderPath)
{
// First check if the folder exists.
if (!folders.ContainsKey(folderPath))
{
AppendFolder(folderPath);
}
// Add the file to the folder.
folders[folderPath].Files.Add(f);
}
// Append a folder.
void AppendFolder(string folderPath)
{
string folderName = folderPath;
string baseFolderPath = "";
while (folderName.Contains('/'))
{
baseFolderPath += "/" + folderName.Substring(0, folderName.IndexOf('/'));
folderName = folderName.Substring(folderName.IndexOf('/') + 1);
}
if (baseFolderPath.StartsWith("/"))
{
baseFolderPath = baseFolderPath.Substring(1);
}
if (!folders.ContainsKey(baseFolderPath))
{
AppendFolder(baseFolderPath);
}
Folder f = new Folder()
{
Id = currFolderId++, Name = folderName
};
folders[baseFolderPath].Folders.Add(f);
folders.Add(folderPath, f);
}
// Fix first file IDs.
foreach (var f in folders.Values)
{
// f.Files = f.Files.OrderBy(x => x.Name).ToList(); = I don't think this should be done.
if (f.Files.Count > 0)
{
f.FirstFileId = f.Files.OrderBy(x => x.Id).ElementAt(0).Id;
}
}
// Fix folders with no files.
void FixFolders(Folder f)
{
foreach (var folder in f.Folders)
{
FixFolders(folder);
}
if (f.Files.Count == 0)
{
f.FirstFileId = f.Folders[0].FirstFileId;
}
}
FixFolders(folders[""]);
}
