public static bool Files2darc(string folderName, bool delete = false, string originalDARC = null, string outFile = null)
{
// Save all contents of a folder to a darc.
try
{
byte[] darcData;
DARC orig;
string root = folderName;
if (originalDARC != null)
{
// Fetch offset of DARC within file.
byte[] darc = File.ReadAllBytes(originalDARC);
int darcPos = GetDARCposition(darc);
if (darcPos < 0)
{
return(false);
}
byte[] origData = darc.Skip(darcPos).ToArray();
orig = new DARC(origData);
orig = InsertFiles(orig, folderName);
byte[] newDARC = SetDARC(orig);
darcData = darc.Take(darcPos).Concat(newDARC).ToArray();
}
else // no existing darc to get
{
orig = GetDARC(folderName);
darcData = SetDARC(orig);
}
// Fetch final name if not specified
outFile ??= originalDARC ?? new DirectoryInfo(folderName).Name.Replace("_d", "") + ".darc";
if (darcData == null)
{
return(false);
}
File.WriteAllBytes(outFile, darcData);
if (Directory.Exists(root) && delete)
{
Directory.Delete(root, true);
}
return(true);
} catch (Exception) { return(false); }
}
public static bool Darc2files(byte[] darc, string folderName)
{
// Save all contents of a DARC to a folder, assuming there's only 1 layer of folders.
try
{
// Clear existing contents
string root = folderName;
if (Directory.Exists(root))
{
Directory.Delete(root, true);
}
// Create new DARC object from input data
DARC DARC = new DARC(darc);
// Output data
for (int i = 2; i < DARC.FileNameTable.Length;)
{
bool isFolder = DARC.Entries[i].IsFolder;
if (!isFolder)
{
return(false);
}
// uint level = DARC.Entries[i].DataOffset; Only assuming 1 layer of folders.
string parentName = DARC.FileNameTable[i].FileName;
Directory.CreateDirectory(Path.Combine(root, parentName));
int nextFolder = (int)DARC.Entries[i++].DataLength;
// Extract all Contents of said folder
while (i < nextFolder)
{
string fileName = DARC.FileNameTable[i].FileName;
int offset = (int)DARC.Entries[i].DataOffset;
int length = (int)DARC.Entries[i].DataLength;
byte[] data = DARC.Data.Skip((int)(offset - DARC.Header.FileDataOffset)).Take(length).ToArray();
string outPath = Path.Combine(root, parentName, fileName);
File.WriteAllBytes(outPath, data);
i++; // Advance to next Entry
}
}
return(true);
}
catch (Exception) { return(false); }
}
// DARC r/w
public static byte[] setDARC(DARC darc)
{
// Package DARC into a writable array.
using (MemoryStream ms = new MemoryStream())
using (BinaryWriter bw = new BinaryWriter(ms))
{
// Write Header
bw.Write(Encoding.ASCII.GetBytes(darc.Header.Signature));
bw.Write(darc.Header.Endianness);
bw.Write(darc.Header.HeaderSize);
bw.Write(darc.Header.Version);
bw.Write(darc.Header.FileSize);
bw.Write(darc.Header.FileTableOffset);
bw.Write(darc.Header.FileTableLength);
bw.Write(darc.Header.FileDataOffset);
// Write FileTableEntries
foreach (FileTableEntry entry in darc.Entries)
{
bw.Write(entry.NameOffset | (entry.IsFolder ? (uint)1 << 24 : 0));
bw.Write(entry.DataOffset);
bw.Write(entry.DataLength);
}
foreach (NameTableEntry entry in darc.FileNameTable)
{
bw.Write(Encoding.Unicode.GetBytes(entry.FileName + "\0"));
}
while (bw.BaseStream.Position < darc.Header.FileDataOffset)
{
bw.Write((byte)0);
}
// Write Data
bw.Write(darc.Data);
return(ms.ToArray());
}
}
public static bool InsertFile(ref DARC orig, int index, string path)
{
try { return(InsertFile(ref orig, index, File.ReadAllBytes(path))); }
catch (Exception) { return(false); }
}
public static DARC GetDARC(string folderName)
{
// Package Folder into a DARC.
List <FileTableEntry> EntryList = new List <FileTableEntry>();
List <NameTableEntry> NameList = new List <NameTableEntry>();
byte[] Data = Array.Empty <byte>();
uint nameOffset = 6; // 00 00 + 00 2E 00 00
#region Build FileTable/NameTables
{
// Null First File
{
EntryList.Add(new FileTableEntry {
DataOffset = 0, DataLength = 0, IsFolder = true, NameOffset = 0
});
NameList.Add(new NameTableEntry(0, ""));
}
// "." Second File
{
EntryList.Add(new FileTableEntry {
DataOffset = 0, DataLength = 0, IsFolder = true, NameOffset = 2
});
NameList.Add(new NameTableEntry(6, "."));
}
foreach (string folder in Directory.GetDirectories(folderName))
{
string parentName = new DirectoryInfo(folder).Name;
string[] files = Directory.GetFiles(folder);
NameList.Add(new NameTableEntry(nameOffset, parentName));
EntryList.Add(new FileTableEntry
{
DataOffset = 1,
DataLength = (uint)(files.Length + EntryList.Count),
IsFolder = true,
NameOffset = nameOffset
});
nameOffset += (uint)parentName.Length + 2; // Account for null terminator
foreach (string file in files)
{
FileInfo fi = new FileInfo(file);
string fileName = fi.Name;
NameList.Add(new NameTableEntry(nameOffset, parentName));
EntryList.Add(new FileTableEntry
{
DataOffset = (uint)Data.Length,
DataLength = (uint)fi.Length,
IsFolder = false,
NameOffset = nameOffset
});
Data = Data.Concat(File.ReadAllBytes(file)).ToArray();
nameOffset += (uint)fileName.Length + 2; // Account for null terminator
}
}
}
#endregion
// Compute Necessary DARC information
int darcFileCount = NameList.Count;
int NameListOffset = darcFileCount * 0xC;
int NameListLength = (int)(nameOffset + NameListOffset);
int DataOffset = NameListLength % 4 == 0 ? NameListLength : NameListLength + (4 - (NameListLength % 4));
Array.Resize(ref Data, Data.Length % 4 == 0 ? Data.Length : Data.Length + 4 - (Data.Length % 4));
int FinalSize = DataOffset + Data.Length;
// Create New DARC
DARC darc = new DARC
{
Header =
{
Signature = "darc",
Endianness = 0xFEFF,
HeaderSize = 0x1C,
Version = 1,
FileSize = (uint)FinalSize,
FileTableOffset = 0x1C,
FileTableLength = (uint)NameListLength,
FileDataOffset = (uint)DataOffset,
},
Entries = EntryList.ToArray(),
FileNameTable = NameList.ToArray(),
Data = Data,
};
// Fix the First two folders to specify the number of files
darc.Entries[0].DataLength = (uint)darcFileCount;
darc.Entries[1].DataLength = (uint)darcFileCount;
// Fix the Data Offset of the files to point to actual destination
foreach (FileTableEntry f in darc.Entries.Where(x => !x.IsFolder))
{
f.DataOffset += darc.Header.FileDataOffset;
}
return(darc);
}
