void saveFile(int fileID)
{
if (fileID > 0x16D)
{
return;
}
int ovrA = fileID << 5;
int srcStart = Bits.getInt32(ovr, ovrA + 4) & 0x1FFFFFF;
int srcSize = Bits.getInt32(ovr, ovrA + 8); // & 0x1FFFFFF;
int srcEnd = srcStart + srcSize;
int desSize = srcSize + (srcSize >> 3) + 7; //Absolute maximum possible size... (Including header and end of data command.)
desSize = (desSize + 0x1FF) & -0x200;
byte[] src = ram; // new byte[srcSize];
int srcPos = srcStart;
byte[] des = new byte[desSize];
int desPos = 0;
des[desPos++] = 0x40;
des[desPos++] = (byte)srcSize;
des[desPos++] = (byte)(srcSize >> 8);
des[desPos++] = (byte)(srcSize >> 16);
int fCur = 0x80;
int fAddr = desPos++;
int flags = 0;
while (srcPos < srcEnd)
{
int dist = 0;
int len = 0;
int winStart = Math.Max(srcStart, srcPos - 0xFFF);
for (int i = winStart; i < srcPos; i++)
{
for (int j = 1; j < 0x10110; j++)
{
if (src[srcPos + j] == src[i + j])
{
//if ((j + 1) >= len)
if (j >= len)
{
dist = i;
//len = j + 1;
len = j;
}
}
else
{
break;
}
}
if (src[srcPos] == src[i])
{
len += 1;
}
else
{
dist += 1;
}
}
if (src[srcPos] != src[dist]) //Insert byte
{
des[desPos++] = src[srcPos++];
fCur >>= 1;
if (fCur == 0)
{
des[fAddr] = (byte)-flags;
fAddr = desPos++;
fCur = 0x80;
flags = 0;
}
}
dist = srcPos - dist;
if (len < 2)
{
des[desPos++] = src[srcPos]; len = 1;
}
else if (len < 0x10)
{
des[desPos++] = (byte)((dist << 4) | len);
des[desPos++] = (byte)(dist >> 4);
}
else if (len < 0x110)
{
des[desPos++] = (byte)((dist << 4) | 0);
des[desPos++] = (byte)(dist >> 4);
des[desPos++] = (byte)(len - 0x10);
}
else // if (len < 0x10110)
{
des[desPos++] = (byte)((dist << 4) | 1);
des[desPos++] = (byte)(dist >> 4);
des[desPos++] = (byte)(len - 0x110);
des[desPos++] = (byte)((len - 0x110) >> 8);
}
srcPos += len;
if (len > 1)
{
flags |= fCur;
}
fCur >>= 1;
if (fCur == 0)
{
des[fAddr] = (byte)-flags;
fAddr = desPos++;
fCur = 0x80;
flags = 0;
}
}
des[desPos++] = 0;
des[desPos++] = 0;
flags |= fCur;
des[fAddr] = (byte)-flags;
//Now to save to ROM.
Bits.saveFile(@"C:\Users\Tea\Desktop\notoriginal.bin", des);
return;
int fatA = fileID << 3;
int fat1 = Bits.getInt32(fat, fatA);
Bits.setInt32(fat, fatA + 4, fat1 + desPos);
//int fat2 = Bits.getInt32(fat, fatA + 4);
int fat2 = Bits.getInt32(fat, fatA + 8);
int size = fat2 - fat1;
//For neatness....
while (desPos < size)
{
des[desPos++] = 0xFF;
}
if (desPos != size)
{
MessageBox.Show("About to lose data... Have fun!");
}
Bits.saveFilePart(path, fat1, size, des);
}
