private static unsafe void SearchAndReplace()

in src/Tasks/Microsoft.NET.Build.Tasks/AppHost.cs [167:201]

31 lines of code
3 McCabe index (conditional complexity)


        private static unsafe void SearchAndReplace(
            MemoryMappedViewAccessor accessor,
            byte[] searchPattern,
            byte[] patternToReplace,
            string appHostSourcePath)
        {
            byte* pointer = null;

            try
            {
                accessor.SafeMemoryMappedViewHandle.AcquirePointer(ref pointer);
                byte* bytes = pointer + accessor.PointerOffset;

                int position = KMPSearch(searchPattern, bytes, accessor.Capacity);
                if (position < 0)
                {
                    throw new BuildErrorException(Strings.AppHostHasBeenModified, appHostSourcePath, AppBinaryPathPlaceholder);
                }

                accessor.WriteArray(
                    position: position,
                    array: patternToReplace,
                    offset: 0,
                    count: patternToReplace.Length);

                Pad0(searchPattern, patternToReplace, bytes, position);
            }
            finally
            {
                if (pointer != null)
                {
                    accessor.SafeMemoryMappedViewHandle.ReleasePointer();
                }
            }
        }