1 files changed, 20 insertions, 0 deletions
diff --git a/src/win/string_util.cpp b/src/win/string_util.cpp
new file mode 100644
index 00000000..dd513b12
--- /dev/null
+++ b/src/win/string_util.cpp
@@ -0,0 +1,20 @@
+#include "cru/platform/string_util.hpp"
+
+#include "cru/win/exception.hpp"
+
+namespace cru::platform {
+std::string ToUtf8String(const std::wstring_view& string) {
+  if (string.empty()) return std::string();
+
+  const auto length = ::WideCharToMultiByte(CP_UTF8, 0, string.data(), -1,
+                                            nullptr, 0, nullptr, nullptr);
+  std::string result;
+  result.resize(length);
+  if (::WideCharToMultiByte(CP_UTF8, 0, string.data(), -1, result.data(),
+                            static_cast<int>(result.size()), nullptr,
+                            nullptr) == 0)
+    throw win::Win32Error(::GetLastError(),
+                          "Failed to convert wide string to UTF-8.");
+  return result;
+}
+}  // namespace cru::platform