public Patch ReadPatch(string name)
{
Patch patch = new Patch
{
instructions = new Stack <PatchInstruction>()
};
try
{
using (StreamReader file = new StreamReader(name))
{
string ln;
if ((ln = file.ReadLine()) != null)
{
patch.fileName = ln.Substring(ln.LastIndexOf(">") + 1);
while ((ln = file.ReadLine()) != null)
{
PatchInstruction instruction = new PatchInstruction();
string[] parts = ln.Split(':');
instruction.offset = System.Convert.ToInt32(parts[0], 16);
instruction.oldHex = parts[1].Substring(0, 2);
instruction.newHex = parts[1].Substring(4, 2);
patch.instructions.Push(instruction);
}
}
file.Close();
}
}
catch (Exception e)
{
MessageBox.Show(e.Message);
}
return(patch);
}
private void ApplyPatch(Patch patch)
{
Stack <string> errors = new Stack <string>();
int maxOffset = richTBMain.Text.Length / 3;
while (patch.instructions.Count > 0)
{
var instruc = patch.instructions.Pop();
int offset = instruc.offset * 3;
if (maxOffset < offset)
{
errors.Push("Offset " + instruc.offset + " greater than size of file");
}
else if (instruc.oldHex != richTBMain.Text.Substring(offset, 2) && instruc.oldHex != "**")
{
errors.Push("Byte " + instruc.oldHex + " not the same as " + richTBMain.Text.Substring(offset, 2));
}
else
{
PatchInstruction toAdd = new PatchInstruction
{
offset = instruc.offset,
oldHex = richTBMain.Text.Substring(offset, 2),
newHex = instruc.newHex
};
history.Add(toAdd);
ChangeText(instruc.newHex, Color.Red, offset, ref richTBMain);
HexChanged(offset);
}
}
if (errors.Count > 0)
{
int counter = 1;
string toCreate = "Errors:";
while (errors.Count > 0)
{
toCreate += Environment.NewLine + counter.ToString() + ". " + errors.Pop();
counter++;
}
MessageBox.Show(toCreate, "Patch failed", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
else
{
MessageBox.Show("Patch successfully applied");
}
}
private void breakFileToolStripMenuItem_Click(object sender, EventArgs e)
{
var rand = new Random();
for (int i = 0; i < 20; i++)
{
int pos = rand.Next(richTBMain.Text.Length / 9) * 3;
PatchInstruction toAdd = new PatchInstruction
{
offset = pos / 3,
oldHex = richTBMain.Text.Substring(pos, 2),
newHex = "90"
};
ChangeText("90", Color.Red, pos, ref richTBMain);
history.Add(toAdd);
HexChanged(pos);
}
MessageBox.Show("File probably could not be opened now, otherwise use break again\n(do not forget to save file to apply changes)");
}
private void richTBAscii_KeyPress(object sender, KeyPressEventArgs e)
{
char currentChar = e.KeyChar;
if (!(currentChar >= 0 && currentChar <= 31))
{
Color highlightColor = Color.Red;
int pos = richTBAscii.SelectionStart;
int line = richTBAscii.GetLineFromCharIndex(pos);
PatchInstruction toAdd = new PatchInstruction
{
offset = (pos - richTBAscii.GetLineFromCharIndex(pos))
};
if (pos >= richTBAscii.Text.Length)
{
bool newline = ((pos - line) % 16 == 0);
ChangeText(currentChar.ToString(), highlightColor, pos, ref richTBAscii, newline);
AsciiAdded();
toAdd.oldHex = "";
toAdd.newHex = richTBMain.Text.Substring((pos - richTBAscii.GetLineFromCharIndex(pos)) * 3, 2);
history.Add(toAdd);
e.Handled = true;
if (newline)
{
richTBAscii.SelectionStart = pos + 2;
}
else
{
richTBAscii.SelectionStart = pos + 1;
}
}
else
{
if ((pos - line) % 16 == 0 && pos != 0)
{
ChangeText(currentChar.ToString(), highlightColor, pos + 1, ref richTBAscii, true);
toAdd.oldHex = richTBMain.Text.Substring((pos + 1 - richTBAscii.GetLineFromCharIndex(pos)) * 3, 2);
AsciiChanged(pos + 1);
toAdd.offset = (pos + 1 - richTBAscii.GetLineFromCharIndex(pos));
toAdd.newHex = richTBMain.Text.Substring((pos + 1 - richTBAscii.GetLineFromCharIndex(pos)) * 3, 2);
history.Add(toAdd);
e.Handled = true;
richTBAscii.SelectionStart = pos + 2;
}
else
{
ChangeText(currentChar.ToString(), highlightColor, pos, ref richTBAscii);
toAdd.oldHex = richTBMain.Text.Substring((pos - richTBAscii.GetLineFromCharIndex(pos)) * 3, 2);
AsciiChanged(pos);
toAdd.newHex = richTBMain.Text.Substring((pos - richTBAscii.GetLineFromCharIndex(pos)) * 3, 2);
history.Add(toAdd);
e.Handled = true;
richTBAscii.SelectionStart = pos + 1;
}
}
}
else
{
e.Handled = true;
}
}
private void richTBMain_KeyPress(object sender, KeyPressEventArgs e)
{
char currentChar = e.KeyChar;
currentChar = char.ToUpper(currentChar);
if ((currentChar >= 65 && currentChar <= 70) || char.IsDigit(currentChar))
{
Color highlightColor = Color.Red;
int pos = richTBMain.SelectionStart;
if (pos >= richTBMain.Text.Length)
{
bool newline = (isTextAtBorder(pos));
ChangeText(currentChar.ToString(), highlightColor, pos, ref richTBMain, newline);
PatchInstruction toadd = new PatchInstruction
{
oldHex = "",
newHex = richTBMain.Text.Substring(richTBMain.Text.Length - 2),
offset = (richTBMain.Text.Length - 2) / 3
};
history.Add(toadd);
HexAdded(newline);
e.Handled = true;
richTBMain.SelectionStart = pos + 2;
}
else
{
PatchInstruction toadd = new PatchInstruction();
int blockStart;
if (pos == richTBMain.Text.Length - 1)
{
blockStart = pos - 1;
}
else
{
blockStart = GetBlockStart(pos);
}
toadd.oldHex = richTBMain.Text.Substring(blockStart, 2);
ChangeText(currentChar.ToString(), highlightColor, pos, ref richTBMain);
toadd.newHex = richTBMain.Text.Substring(blockStart, 2);
toadd.offset = blockStart / 3;
history.Add(toadd);
HexChanged(pos);
e.Handled = true;
if (pos >= richTBMain.Text.Length - 1) //REDO
{
richTBMain.SelectionStart = pos + 1;
}
else if (richTBMain.Text[pos + 1] == ' ' || richTBMain.Text[pos + 1] == '\n')
{
richTBMain.SelectionStart = pos + 2;
}
else
{
richTBMain.SelectionStart = pos + 1;
}
}
}
else
{
e.Handled = true;
}
}
