Determine language code and type of format for address.

third_party/libaddressinput/chromium/cpp/src/util.cc

+// Copyright (C) 2014 Google Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "util.h"
+
+#include <string>
+
+namespace i18n {
+namespace addressinput {
+
+std::string NormalizeLanguageCode(const std::string& language_code) {
+  std::string::size_type pos = language_code.find('-');
+  if (pos == std::string::npos) {
+    return language_code;
+  }
+  if (language_code.substr(pos) == "-latn") {
+    return language_code;
+  }
+  return language_code.substr(0, pos);
+}
+
+}  // namespace addressinput
+}  // namespace i18n