public static Entry[] Open(Stream Packget)
{
Stream HeaderData = new MemoryStream();
Packget.Seek(0xC, SeekOrigin.Begin);
Stream Decryptor = new CryptoStream(Packget, true);
Decryptor.CopyTo(HeaderData);
HeaderData.Position = 0;
BinHeader Header = new BinHeader();
StructReader Reader = new StructReader(HeaderData);
Reader.ReadStruct(ref Header);
return((from x in Header.Entries
select new Entry()
{
FileName = Packget.PeekCString(x.NOffset + (Header.FileCount * 12) + 0x14),
Content = new VirtStream(Packget, x.DOffset, x.Length)
}).ToArray());
}
public static void Save(Entry[] Files, Stream Output)
{
const string Signature = "ESC-ARC2";
Output.WriteString(Signature);
byte[] Key = new byte[4];
new Random().NextBytes(Key);
Output.Write(Key, 0, Key.Length);
MemoryStream NamesTbl = new MemoryStream();
BinHeader Header = new BinHeader()
{
Entries = new BinEntry[Files.Length]
};
Stream[] Compressed = new Stream[Files.Length];
uint DSize = 0;
for (int i = 0; i < Files.Length; i++)
{
#if COMPRESS
Compressed[i] = new MemoryStream(FakeCompress(Files[i].Content.ToArray()));
#else
Compressed[i] = new MemoryStream(Files[i].Content.ToArray());
#endif
Files[i].Content.Close();
Header.Entries[i] = new BinEntry()
{
DOffset = DSize,
NOffset = (uint)NamesTbl.Length,
Length = (uint)Compressed[i].Length
};
DSize += (uint)Compressed[i].Length;
NamesTbl.WriteCString(Files[i].FileName);
}
NamesTbl.Position = 0;
Header.NameTblLen = (uint)NamesTbl.Length;
uint HeaderLen = ((uint)Header.Entries.Length * 12) + 0x14;
for (int i = 0; i < Files.Length; i++)
{
Header.Entries[i].DOffset += Header.NameTblLen + HeaderLen;
}
byte[] HeaderData = Tools.BuildStruct(ref Header);
CryptoStream Encryptor = new CryptoStream(Output, false, Key.GetUInt32(0));
Encryptor.Write(HeaderData, 0, HeaderData.Length);
Encryptor.Flush();
NamesTbl.CopyTo(Output);
for (int i = 0; i < Files.Length; i++)
{
Compressed[i].CopyTo(Output);
Compressed[i].Close();
}
NamesTbl?.Close();
Encryptor?.Close();
Output?.Close();
}
