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+// Copyright (C) 2012 The Libphonenumber Authors
+//
+// 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.
+
+// Utility for international short phone numbers, such as short codes and
+// emergency numbers. Note most commercial short numbers are not handled here,
+// but by the phonenumberutil.
+//
+// Author: David Yonge-Mallo
+//
+// This is a direct port from ShortNumberUtil.java.
+// Changes to this class should also happen to the Java version, whenever it
+// makes sense.
+
+#ifndef I18N_PHONENUMBERS_SHORTNUMBERUTIL_H_
+#define I18N_PHONENUMBERS_SHORTNUMBERUTIL_H_
+
+#include <string>
+
+#include "phonenumbers/base/basictypes.h"
+
+namespace i18n {
+namespace phonenumbers {
+
+using std::string;
+
+class PhoneNumberUtil;
+
+class ShortNumberUtil {
+ public:
+  ShortNumberUtil();
+
+  // Returns true if the number might be used to connect to an emergency service
+  // in the given region.
+  //
+  // This method takes into account cases where the number might contain
+  // formatting, or might have additional digits appended (when it is okay to do
+  // that in the region specified).
+  bool ConnectsToEmergencyNumber(const string& number,
+                                 const string& region_code) const;
+
+  // Returns true if the number exactly matches an emergency service number in
+  // the given region.
+  //
+  // This method takes into account cases where the number might contain
+  // formatting, but doesn't allow additional digits to be appended.
+  bool IsEmergencyNumber(const string& number,
+                         const string& region_code) const;
+
+ private:
+  const PhoneNumberUtil& phone_util_;
+
+  bool MatchesEmergencyNumberHelper(const string& number,
+                                    const string& region_code,
+                                    bool allow_prefix_match) const;
+
+  DISALLOW_COPY_AND_ASSIGN(ShortNumberUtil);
+};
+
+}  // namespace phonenumbers
+}  // namespace i18n
+
+#endif  // I18N_PHONENUMBERS_SHORTNUMBERUTIL_H_