#include "fuzzutil.h"

#include <utility>

std::optional<two_inputs> SplitInputs(const uint8_t *Data, size_t Size)

{

	if (!Size) {

		return std::nullopt;

	}

	// figure out a random point in [0, Size] to split our input.

	size_t left_size = (Data[0] / 255.0) * (Size - 1);

	// Copy inputs to new allocations so if bdiff over-reads

	// AddressSanitizer can detect it.

	std::unique_ptr<char[]> left(new char[left_size]);

	memcpy(left.get(), Data + 1, left_size);

	// right starts at the next byte after left ends

	size_t right_size = Size - (left_size + 1);

	std::unique_ptr<char[]> right(new char[right_size]);

	memcpy(right.get(), Data + 1 + left_size, right_size);

	LOG(2) << "inputs are  " << left_size << " and " << right_size

	       << " bytes" << std::endl;

	two_inputs result = {std::move(right), right_size, std::move(left),

	                     left_size};

	return result;

}