public async Task <byte[]> Save()
{
if (!this.WasCompressed)
{
return(this.Data);
}
byte[] data;
try
{
using (MemoryStream inputStream = new MemoryStream(this.Data))
using (MemoryStream outputStream = new MemoryStream())
{
await Lzss.Compress(inputStream, this.Data.Length, outputStream, original : true);
data = outputStream.ToArray();
}
}
catch
{
data = new byte[0];
}
return(data);
}
public static async Task <bool> GarcPackMS(string folderPath, string garcPath, int version, int bytesPadding)
{
// Check to see if our input folder exists.
if (!new DirectoryInfo(folderPath).Exists)
{
return(false);
}
if (version != Version4 && version != Version6)
{
throw new FormatException("Invalid GARC Version: 0x" + version.ToString("X4"));
}
// Okay some basic proofing is done. Proceed.
int filectr = 0;
// Get the paths of the files to pack up.
string[] files = Directory.GetFiles(folderPath);
string[] folders = Directory.GetDirectories(folderPath, "*.*", SearchOption.TopDirectoryOnly);
string[] packOrder = new string[files.Length + folders.Length];
#region Reassemble a list of filenames.
try
{
foreach (string f in files)
{
string fn = Path.GetFileNameWithoutExtension(f);
if (fn == null)
{
continue;
}
int compressed = fn.IndexOf("dec_", StringComparison.Ordinal);
int fileNumber = compressed < 0
? int.Parse(fn)
: int.Parse(fn.Substring(compressed + 4));
packOrder[fileNumber] = f;
filectr++;
}
foreach (string f in folders)
{
packOrder[int.Parse(new DirectoryInfo(f).Name)] = f;
filectr += Directory.GetFiles(f).Length;
}
}
catch (Exception)
{
return(false);
}
#endregion
// Set Up the GARC template.
GarcDef garc = new GarcDef {
ContentPadToNearest = 4,
Fato =
{
// Magic = new[] { 'O', 'T', 'A', 'F' },
Entries = new GarcDef.FatoEntry[packOrder.Length],
EntryCount = (ushort)packOrder.Length,
HeaderSize = 0xC + packOrder.Length * 4,
Padding = 0xFFFF
},
Fatb =
{
// Magic = new[] { 'B', 'T', 'A', 'F' },
Entries = new GarcDef.FatbEntry[packOrder.Length],
FileCount = filectr
}
};
if (version == Version6)
{
// Some files have larger bytes-to-pad values (ex/ 0x80 for a109)
// Hopefully there's no problems defining this with a constant number.
garc.ContentPadToNearest = 4;
}
#region Start Reassembling the FAT* tables.
{
int op = 0;
int od = 0;
int v = 0;
for (int i = 0; i < garc.Fatb.Entries.Length; i++)
{
garc.Fato.Entries[i].Offset = op; // FATO offset
garc.Fatb.Entries[i].SubEntries = new GarcDef.FatbSubEntry[32];
op += 4; // Vector
if (!Directory.Exists(packOrder[i])) // is not folder
{
garc.Fatb.Entries[i].IsFolder = false;
garc.Fatb.Entries[i].SubEntries[0].Exists = true;
string fn = Path.GetFileNameWithoutExtension(packOrder[i]);
if (fn == null)
{
continue;
}
int compressed = fn.IndexOf("dec_", StringComparison.Ordinal);
int fileNumber = compressed < 0
? int.Parse(fn)
: int.Parse(fn.Substring(compressed + 4));
if (compressed >= 0)
{
string old = packOrder[i];
await Lzss.Compress(packOrder[i], packOrder[i] = Path.Combine(Path.GetDirectoryName(packOrder[i]), fileNumber.ToString()));
File.Delete(old);
}
// Assemble Vector
v = 1;
// Assemble Entry
FileInfo fi = new FileInfo(packOrder[i]);
int actualLength = (int)(fi.Length % 4 == 0
? fi.Length
: fi.Length + 4 - fi.Length % 4);
garc.Fatb.Entries[i].SubEntries[0].Start = od;
garc.Fatb.Entries[i].SubEntries[0].End = actualLength + garc.Fatb.Entries[i].SubEntries[0].Start;
garc.Fatb.Entries[i].SubEntries[0].Length = (int)fi.Length;
od += actualLength;
op += 12;
}
else
{
garc.Fatb.Entries[i].IsFolder = true;
string[] subFiles = Directory.GetFiles(packOrder[i]);
foreach (string f in subFiles)
{
string s = f;
string fn = Path.GetFileNameWithoutExtension(f);
if (fn == null)
{
continue;
}
int compressed = fn.IndexOf("dec_", StringComparison.Ordinal);
int fileNumber = compressed < 0
? int.Parse(fn)
: int.Parse(fn.Substring(compressed + 4));
garc.Fatb.Entries[i].SubEntries[fileNumber].Exists = true;
if (compressed >= 0)
{
await Lzss.Compress(f, s = Path.Combine(Path.GetDirectoryName(f), fileNumber.ToString()));
File.Delete(f);
}
// Assemble Vector
v |= 1 << fileNumber;
// Assemble Entry
FileInfo fi = new FileInfo(s);
int actualLength = (int)(fi.Length % 4 == 0
? fi.Length
: fi.Length + 4 - fi.Length % 4);
garc.Fatb.Entries[i].SubEntries[fileNumber].Start = od;
garc.Fatb.Entries[i].SubEntries[fileNumber].End = actualLength + garc.Fatb.Entries[i].SubEntries[fileNumber].Start;
garc.Fatb.Entries[i].SubEntries[fileNumber].Length = (int)fi.Length;
od += actualLength;
op += 12;
}
}
garc.Fatb.Entries[i].Vector = (uint)v;
}
garc.Fatb.HeaderSize = 0xC + op;
}
#endregion
// Delete the old garc if it exists, then begin writing our new one
try
{
File.Delete(garcPath);
}
catch
{
// ignored
}
// Set up the Header Info
using (var newGarc = new FileStream(garcPath, FileMode.Create))
using (var ms = new MemoryStream())
using (BinaryWriter gw = new BinaryWriter(ms))
{
#region Write GARC Headers
// Write GARC
gw.Write((uint)0x47415243); // GARC
gw.Write((uint)(version == Version6
? 0x24
: 0x1C)); // Header Length
gw.Write((ushort)0xFEFF); // Endianness BOM
gw.Write((ushort)version); // Version
gw.Write((uint)0x00000004); // Section Count (4)
gw.Write((uint)0x00000000); // Data Offset (temp)
gw.Write((uint)0x00000000); // File Length (temp)
gw.Write((uint)0x00000000); // Largest File Size (temp)
if (version == Version6)
{
gw.Write((uint)0x0);
gw.Write((uint)0x0);
}
// Write FATO
gw.Write((uint)0x4641544F); // FATO
gw.Write(garc.Fato.HeaderSize); // Header Size
gw.Write(garc.Fato.EntryCount); // Entry Count
gw.Write(garc.Fato.Padding); // Padding
for (int i = 0; i < garc.Fato.Entries.Length; i++)
{
gw.Write((uint)garc.Fato.Entries[i].Offset);
}
// Write FATB
gw.Write((uint)0x46415442); // FATB
gw.Write(garc.Fatb.HeaderSize); // Header Size
gw.Write(garc.Fatb.FileCount); // File Count
foreach (var e in garc.Fatb.Entries)
{
gw.Write(e.Vector);
foreach (var s in e.SubEntries.Where(s => s.Exists))
{
gw.Write((uint)s.Start);
gw.Write((uint)s.End);
gw.Write((uint)s.Length);
}
}
// Write FIMB
gw.Write((uint)0x46494D42); // FIMB
gw.Write((uint)0x0000000C); // Header Length
var dataLen = gw.BaseStream.Position;
gw.Write((uint)0); // Data Length - TEMP
gw.Seek(0x10, SeekOrigin.Begin); // Goto the start of the un-set 0 data we set earlier and set it.
var hdrLen = gw.BaseStream.Position;
gw.Write((uint)0); // Write Data Offset - TEMP
gw.Write((uint)0); // Write total GARC Length - TEMP
// Write Handling information
if (version == Version4)
{
gw.Write(garc.ContentLargestUnpadded); // Write Largest File stat
}
else if (version == Version6)
{
gw.Write(garc.ContentLargestPadded); // Write Largest With Padding
gw.Write(garc.ContentLargestUnpadded); // Write Largest Without Padding
gw.Write(garc.ContentPadToNearest);
}
newGarc.Seek(0, SeekOrigin.End); // Goto the end so we can copy the filedata after the GARC headers.
#endregion
#region Write Files
var ghLength = gw.BaseStream.Length;
long largestSize = 0; // Required memory to allocate to handle the largest file
long largestPadded = 0; // Required memory to allocate to handle the largest PADDED file (Ver6 only)
foreach (string e in packOrder)
{
string[] fa = Directory.Exists(e)
? Directory.GetFiles(e)
: new[] { e };
foreach (string f in fa)
{
// Update largest file length if necessary
long len = new FileInfo(f).Length;
int padding = (int)(len % bytesPadding);
if (padding != 0)
{
padding = bytesPadding - padding;
}
bool largest = len > largestSize;
if (largest)
{
largestSize = len;
largestPadded = len + padding;
}
// Write to FIMB
using (var x = File.OpenRead(f))
x.CopyTo(newGarc);
// While length is not divisible by 4, pad with FF (unused byte)
while (padding-- > 0)
{
gw.Write((byte)0xFF);
}
}
}
garc.ContentLargestUnpadded = (uint)largestSize;
garc.ContentLargestPadded = (uint)largestPadded;
var gdLength = gw.BaseStream.Length - ghLength;
#endregion
gw.Seek((int)dataLen, SeekOrigin.Begin);
gw.Write((uint)gdLength); // Data Length
gw.Seek((int)hdrLen, SeekOrigin.Begin);
gw.Write((uint)ghLength); // Write Data Offset
gw.Write((uint)gw.BaseStream.Length); // Write total GARC Length
// Write Handling information
switch (version)
{
case Version4:
gw.Write(garc.ContentLargestUnpadded); // Write Largest File stat
break;
case Version6:
gw.Write(garc.ContentLargestPadded); // Write Largest With Padding
gw.Write(garc.ContentLargestUnpadded); // Write Largest Without Padding
gw.Write(garc.ContentPadToNearest);
break;
}
await ms.CopyToAsync(newGarc);
return(true);
}
}