/*
* This method takes the first Address and Data from the patch and tests if the current values in the
* ROM match the values of the patch - if they match the patch is already applied. This doesn't test
* all values to speed things up.
*/
public bool CheckIsApplied(NitroROM rom)
{
if (m_DecompressAllOverlays && Helper.CheckAllOverlaysDecompressed() == false)
{
m_IsApplied = false;
return(false);
}
INitroROMBlock fileToPatch = null;
if (m_FileToPatch != null)
{
fileToPatch = Program.m_ROM.GetFileFromName(m_FileToPatch);
}
else if (m_OverlayID != null)
{
fileToPatch = new NitroOverlay(Program.m_ROM, uint.Parse(m_OverlayID));
}
AddressDataPair testAddressDataPair = null;
switch (rom.m_Version)
{
case NitroROM.Version.EUR:
testAddressDataPair = (m_EURPatch.Count == 0) ? null : m_EURPatch.ElementAt(0);
break;
case NitroROM.Version.USA_v1:
testAddressDataPair = (m_USv1Patch.Count == 0) ? null : m_USv1Patch.ElementAt(0);
break;
case NitroROM.Version.USA_v2:
testAddressDataPair = (m_USv2Patch.Count == 0) ? null : m_USv2Patch.ElementAt(0);
break;
case NitroROM.Version.JAP:
testAddressDataPair = (m_JAPPatch.Count == 0) ? null : m_JAPPatch.ElementAt(0);
break;
}
if (testAddressDataPair == null || testAddressDataPair.m_Data == null || testAddressDataPair.m_Data.Length == 0)
{
m_IsApplied = false;
return(false);
}
for (int i = 0; i < testAddressDataPair.m_Data.Length; i++)
{
if (fileToPatch == null)
{
if (Program.m_IsROMFolder)
{
Program.m_ROM.arm9R.BaseStream.Position = testAddressDataPair.m_Address + (uint)i - Program.m_ROM.headerSize;
if (Program.m_ROM.arm9R.ReadByte() != testAddressDataPair.m_Data[i])
{
m_IsApplied = false;
return(false);
}
}
else
{
if (rom.Read8(testAddressDataPair.m_Address + (uint)i) != testAddressDataPair.m_Data[i])
{
m_IsApplied = false;
return(false);
}
}
}
else if (fileToPatch != null && fileToPatch.Read8(testAddressDataPair.m_Address + (uint)i) != testAddressDataPair.m_Data[i])
{
m_IsApplied = false;
return(false);
}
}
//If it reaches here, the patch has already been applied
m_IsApplied = true;
return(true);
}
