/// <summary>
/// Write page from buffer: n - page number; nbuf - buffer number
/// !!! NOT APPLICABLE TO IMO
/// </summary>
/// <param name="n"></param>
/// <param name="nbuf"></param>
private void page_write(long n, int nbuf)
{
for (int i = 0; i < pd.Length; i++)
{
if ((n >= pd[i].start_page) & (n <= pd[i].end_page))
{
long addr = (long)((n - pd[i].start_page) * (DESCRIPTOR.PageSize + DEFS.SYSTEM_USED_PAGE_SPACE));
uint crc32 = VSCRC32.CountCrc(segment_table[0].cache[nbuf].buf);
pd[i].fs.Write(addr + 4, crc32); // CRC32
if (DESCRIPTOR.CATALOG.ENCRYPT)
{
pd[i].fs.Write(addr, DEFS.DATA_ENCRYPTED); // Encryption
VSCrypto.Encrypt(ref segment_table[0].cache[nbuf].buf, ref e_buf, e_key, 0);
pd[i].fs.Write(addr + DEFS.SYSTEM_USED_PAGE_SPACE, ref e_buf);
}
else
{
pd[i].fs.Write(addr, DEFS.DATA_NOT_ENCRYPTED); // Encryption
pd[i].fs.Write(addr + DEFS.SYSTEM_USED_PAGE_SPACE, ref segment_table[0].cache[nbuf].buf);
}
PGWrite++;
}
}
}
////////////////////////////////////////////////////////////////////
//////////////// WRITE METHODS /////////////////////////////////////
////////////////////////////////////////////////////////////////////
/// <summary>
/// Write bytes
/// </summary>
/// <param name="offset"></param>
/// <param name="data"></param>
public void Write(long offset, ref byte[] data)
{
if (offset >= 0)
{
fs.Seek(offset, SeekOrigin.Begin);
}
if (_encrypt)
{
byte[] e_data = new byte[data.Length];
VSCrypto.Encrypt(ref data, ref e_data, xkey_b, fs.Position);
fs.Write(e_data, 0, data.Length);
}
else
{
fs.Write(data, 0, data.Length);
}
}