Add 'external/ircolib/' from commit 'ce3cd726c8df8388d554abf8bb55d55020eb4450'

git-subtree-dir: external/ircolib
git-subtree-mainline: e64eb40b38
git-subtree-split: ce3cd726c8

external/ircolib/file.hpp

@@ -0,0 +1,43 @@
+#pragma once
+#include <types.hpp>
+#include <fstream>
+#include <vector>
+#include <filesystem>
+
+namespace fs = std::filesystem;
+
+namespace ircolib {
+static inline std::vector<u8> ReadFileBinary(const std::string &path) {
+  std::ifstream file(path, std::ios::binary);
+  return {std::istreambuf_iterator{file}, {}};
+}
+
+static inline void WriteFileBinary(const std::vector<u8> &data, const std::string &path) {
+  std::ofstream file(path, std::ios::binary);
+  std::copy(data.begin(), data.end(), std::ostreambuf_iterator{file});
+}
+
+static inline void WriteFileBinary(const u8 *data, const size_t size, const std::string &path) {
+  FILE *out = fopen(path.c_str(), "wb");
+  fwrite(data, size, 1, out);
+  fclose(out);
+}
+
+template <size_t Size>
+static inline void WriteFileBinary(const std::array<u8, Size> &data, const std::string &path) {
+  std::ofstream file(path, std::ios::binary);
+  std::copy(data.begin(), data.end(), std::ostreambuf_iterator{file});
+}
+
+static inline size_t NextPow2(size_t num) {
+  // Taken from "Bit Twiddling Hacks" by Sean Anderson:
+  // https://graphics.stanford.edu/~seander/bithacks.html#RoundUpPowerOf2
+  --num;
+  num |= num >> 1;
+  num |= num >> 2;
+  num |= num >> 4;
+  num |= num >> 8;
+  num |= num >> 16;
+  return num + 1;
+}
+} // namespace Util