| // 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. |
| // |
| // Author: Patrick Mezard |
| |
| #ifndef I18N_PHONENUMBERS_AREA_CODE_MAP_H_ |
| #define I18N_PHONENUMBERS_AREA_CODE_MAP_H_ |
| |
| #include <map> |
| #include <string> |
| |
| #include "phonenumbers/base/basictypes.h" |
| #include "phonenumbers/base/memory/scoped_ptr.h" |
| |
| namespace i18n { |
| namespace phonenumbers { |
| |
| using std::map; |
| using std::string; |
| |
| class DefaultMapStorage; |
| class PhoneNumber; |
| class PhoneNumberUtil; |
| struct PrefixDescriptions; |
| |
| // A utility that maps phone number prefixes to a string describing the |
| // geographical area the prefix covers. |
| class AreaCodeMap { |
| public: |
| AreaCodeMap(); |
| ~AreaCodeMap(); |
| |
| // Returns the description of the geographical area the number corresponds |
| // to. This method distinguishes the case of an invalid prefix and a prefix |
| // for which the name is not available in the current language. If the |
| // description is not available in the current language an empty string is |
| // returned. If no description was found for the provided number, null is |
| // returned. |
| const char* Lookup(const PhoneNumber& number) const; |
| |
| // Creates an AreaCodeMap initialized with area_codes. Note that the |
| // underlying implementation of this method is expensive thus should |
| // not be called by time-critical applications. |
| // |
| // area_codes maps phone number prefixes to geographical area description. |
| void ReadAreaCodeMap(const PrefixDescriptions* descriptions); |
| |
| private: |
| // Does a binary search for value in the provided array from start to end |
| // (inclusive). Returns the position if {@code value} is found; otherwise, |
| // returns the position which has the largest value that is less than value. |
| // This means if value is the smallest, -1 will be returned. |
| int BinarySearch(int start, int end, int64 value) const; |
| |
| const PhoneNumberUtil& phone_util_; |
| scoped_ptr<const DefaultMapStorage> storage_; |
| |
| DISALLOW_COPY_AND_ASSIGN(AreaCodeMap); |
| }; |
| |
| } // namespace phonenumbers |
| } // namespace i18n |
| |
| #endif /* I18N_PHONENUMBERS_AREA_CODE_MAP_H_ */ |