private static void FileVerifyExeVersion(FileStream file)
{
if (!Patcher.FileCheckBytes(file, Patcher.xwaExeVersionOffset, Patcher.xwaExeVersionBytes))
{
throw new FileNotFoundException(string.Format(CultureInfo.InvariantCulture, "{0} not found", Patcher.xwaExeVersion));
}
}
public static bool CanBeApplied(string exeFileName, Patch patch)
{
if (exeFileName == null)
{
throw new ArgumentNullException("exeFileName");
}
if (patch == null)
{
throw new ArgumentNullException("patch");
}
using (FileStream file = File.Open(exeFileName, FileMode.Open, FileAccess.Read))
{
Patcher.FileVerifyExeVersion(file);
foreach (var item in patch.Items)
{
if (!Patcher.FileCheckBytes(file, item.Offset, item.OldValues))
{
return(false);
}
}
}
return(true);
}
public void Apply(string exeFileName, bool writeNewValues)
{
if (exeFileName == null)
{
throw new ArgumentNullException("exeFileName");
}
using (FileStream file = File.Open(exeFileName, FileMode.Open, FileAccess.ReadWrite))
{
Patcher.FileVerifyExeVersion(file);
foreach (var patch in this.Patches)
{
foreach (var item in patch.Items)
{
if (writeNewValues)
{
if (!Patcher.FileCheckBytes(file, item.Offset, item.OldValues))
{
throw new InvalidDataException();
}
}
else
{
if (!Patcher.FileCheckBytes(file, item.Offset, item.NewValues))
{
throw new InvalidDataException();
}
}
}
foreach (var item in patch.Items)
{
if (writeNewValues)
{
file.Seek(item.Offset, SeekOrigin.Begin);
file.Write(item.NewValues, 0, item.NewValues.Length);
}
else
{
file.Seek(item.Offset, SeekOrigin.Begin);
file.Write(item.OldValues, 0, item.OldValues.Length);
}
}
}
}
}
