fix transform commit shader

src/util.cpp

@@ -293,6 +293,26 @@ std::string unescape(const std::string& s)
     return res;
 }
 
+std::wstring str2wstr(const std::string& str)
+{
+    mbstate_t st = {};
+    std::wstring converted;
+    converted.resize(str.size());
+    const char* ptr = str.c_str();
+    std::mbsrtowcs((wchar_t*)converted.data(), &ptr, converted.capacity(), &st);
+    return converted;
+}
+
+std::string wstr2str(const std::wstring & wstr)
+{
+    mbstate_t st = {};
+    std::string converted;
+    converted.resize(wstr.size());
+    const wchar_t * wptr = wstr.c_str();
+    std::wcsrtombs((char*)converted.data(), &wptr, converted.capacity(), &st);
+    return converted;
+}
+
 static const char* gl2str(GLenum err)
 {
     switch (err)