Set _fmode to utf8 for Windows builds.

Author: evoskuil

src/main.cpp

@@ -31,6 +31,15 @@ BC_USE_LIBBITCOIN_MAIN
  */
 int bc::main(int argc, char* argv[])
 {
+#ifdef _MSC_VER
+    if (_setmode(_fileno(stdin), _O_U8TEXT) == -1)
+        throw std::exception("Could not set STDIN to utf8 mode.");
+    if (_setmode(_fileno(stdout), _O_U8TEXT) == -1)
+        throw std::exception("Could not set STDOUT to utf8 mode.");
+    if (_setmode(_fileno(stderr), _O_U8TEXT) == -1)
+        throw std::exception("Could not set STDERR to utf8 mode.");
+#endif
+
     return bc::server::dispatch(argc, const_cast<const char**>(argv),
         bc::cin, bc::cout, bc::cerr);
 }