fallback to boost::locale on linux

1 files changed, 44 insertions, 0 deletions

diff --git a/include/llmr/util/utf.hpp b/include/llmr/util/utf.hpp
new file mode 100644
index 0000000000..fb9ab2048b
--- /dev/null
+++ b/include/llmr/util/utf.hpp
@@ -0,0 +1,44 @@
+#ifndef LLMR_UTIL_UTF
+#define LLMR_UTIL_UTF
+
+#include <memory>
+
+// g++/libstdc++ is missing c++11 codecvt support
+#ifdef __linux__
+#include <boost/locale.hpp>
+#else
+#include <codecvt>
+#endif
+
+namespace llmr {
+
+namespace util {
+
+#ifdef __linux__
+
+class utf8_to_utf32 {
+ public:
+    explicit utf8_to_utf32()
+        : utf32conv_() {}
+    std::u32string convert(std::string const& utf8) {
+        return boost::locale::conv::utf_to_utf<char32_t>(utf8)
+    }
+};
+#else
+
+class utf8_to_utf32 {
+ public:
+    explicit utf8_to_utf32()
+        : utf32conv_() {}
+    std::u32string convert(std::string const& utf8) {
+        return utf32conv_.from_bytes(utf8);
+    }
+ private:
+    std::wstring_convert<std::codecvt_utf8<char32_t>, char32_t> utf32conv_;
+};
+
+#endif
+
+}}
+
+#endif