public void Open(string szFile)
{
using (BinaryReader br = new BinaryReader(File.OpenRead(szFile), Encoding.Default))
{
byte nCipherIndex = 0;
while (br.PeekChar() != -1)
{
CSDATA_INDEX index = new CSDATA_INDEX();
byte nStrLen = br.ReadByte();
Cipher(ref nStrLen, ref nCipherIndex);
byte[] szHash = br.ReadBytes(nStrLen);
Cipher(ref szHash, ref nCipherIndex);
byte[] nVal = br.ReadBytes(8);
Cipher(ref nVal, ref nCipherIndex);
index.szHash = Encoding.Default.GetString(szHash);
index.nOffset = BitConverter.ToUInt32(nVal, 0);
index.nSize = BitConverter.ToUInt32(nVal, 4);
index.nFile = GetFileID(index.szHash);
m_lClient.Add(index);
}
}
}
public void Patch(string szFile, string szPath, CSPATCH_INDEX patchIndex)
{
FileInfo pInfo = new FileInfo(szFile);
var index = m_lClient.Find(r => r.szHash == patchIndex.hashedName);
bool bIsNew = false;
if (index == null)
{
bIsNew = true;
index = new CSDATA_INDEX();
index.szHash = patchIndex.hashedName;
index.nFile = GetFileID(index.szHash);
}
else
{
m_lClient.Remove(index);
}
string szDataFile = Path.Combine(szPath, "data.00" + index.nFile);
FileStream tFileStream = (!bIsNew && pInfo.Length <= index.nSize)
? new FileStream(szDataFile, FileMode.Open)
: new FileStream(szDataFile, FileMode.Append);
using (BinaryWriter bWriter = new BinaryWriter(tFileStream))
{
if (!bIsNew && pInfo.Length <= index.nSize)
{
// Replace
bWriter.BaseStream.Position = index.nOffset;
index.nSize = (uint)pInfo.Length;
}
else
{
// Append
bWriter.BaseStream.Position = new FileInfo(szDataFile).Length;
index.nSize = (uint)pInfo.Length;
index.nOffset = (uint)bWriter.BaseStream.Position;
}
using (BinaryReader bReader = new BinaryReader(File.OpenRead(szFile)))
{
byte[] pBuffer = bReader.ReadBytes((int)bReader.BaseStream.Length);
if (Encrypted(pInfo.Extension))
{
byte nCipherIndex = 0;
Cipher(ref pBuffer, ref nCipherIndex);
}
bWriter.Write(pBuffer);
}
m_lClient.Add(index);
}
}
