1 files changed, 22 insertions, 0 deletions
diff --git a/src/util/string_util.cpp b/src/util/string_util.cpp
new file mode 100644
index 00000000..c9391fc6
--- /dev/null
+++ b/src/util/string_util.cpp
@@ -0,0 +1,22 @@
+#include "string_util.hpp"
+
+#include <Windows.h>
+
+#include "exception.hpp"
+
+namespace cru::util {
+MultiByteString ToUtf8String(const StringView& string) {
+  if (string.empty()) return MultiByteString();
+
+  const auto length = ::WideCharToMultiByte(CP_UTF8, 0, string.data(), -1,
+                                            nullptr, 0, nullptr, nullptr);
+  MultiByteString result;
+  result.reserve(length);
+  if (::WideCharToMultiByte(CP_UTF8, 0, string.data(), -1, result.data(),
+                            static_cast<int>(result.capacity()), nullptr,
+                            nullptr) == 0)
+    throw Win32Error(::GetLastError(),
+                     "Failed to convert wide string to UTF-8.");
+  return result;
+}
+}  // namespace cru::util