private void ApplyPatch(Stream data, string patchPath)
{
Stream s = new FileStream(patchPath, FileMode.Open);
IpsFile patch = new IpsFile(s);
s.Close();
foreach (IpsRecord record in patch)
{
record.Apply(data);
}
}
private void btnPatchCreate_Click(object sender, EventArgs e)
{
byte[] rom = LoadFileData(lblRomPath.Text);
byte[] compare = LoadFileData(lblComparePath.Text);
IpsFile ips = new IpsFile();
int size = Math.Min(rom.Length, compare.Length);
compareState state = compareState.LookingForDifference;
int differenceStart = 0;
int differenceLength;
for (int i = 0; i < size; i++)
{
switch (state)
{
case compareState.LookingForDifference:
if (rom[i] != compare[i])
{
differenceStart = i;
state = compareState.ScanningDifference;
}
break;
case compareState.ScanningDifference:
if (rom[i] == compare[i])
{
differenceLength = i - differenceStart;
state = compareState.LookingForDifference;
byte[] data = new byte[differenceLength];
Array.Copy(rom, differenceStart, data, 0, differenceLength);
ips.AddRecord(new IpsRecord(data, differenceStart));
}
break;
}
}
if (PatchSaver.ShowDialog() == DialogResult.OK)
{
using (FileStream fs = new FileStream(PatchSaver.FileName, FileMode.Create)){
ips.Save(fs);
}
lblPatchPath.Text = PatchSaver.FileName;
picIps.Image = Resources.Patch;
}
grpPatch.ForeColor = SystemColors.WindowText;
EnableApplyButtons();
}