| // 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: David Yonge-Mallo |
| |
| #include "phonenumbers/shortnumberinfo.h" |
| |
| #include <string.h> |
| #include <iterator> |
| #include <map> |
| |
| #include "phonenumbers/base/memory/scoped_ptr.h" |
| #include "phonenumbers/default_logger.h" |
| #include "phonenumbers/phonemetadata.pb.h" |
| #include "phonenumbers/phonenumberutil.h" |
| #include "phonenumbers/regexp_adapter.h" |
| #include "phonenumbers/regexp_factory.h" |
| #include "phonenumbers/region_code.h" |
| #include "phonenumbers/short_metadata.h" |
| |
| namespace i18n { |
| namespace phonenumbers { |
| |
| using std::make_pair; |
| using std::map; |
| using std::string; |
| |
| bool LoadCompiledInMetadata(PhoneMetadataCollection* metadata) { |
| if (!metadata->ParseFromArray(short_metadata_get(), short_metadata_size())) { |
| LOG(ERROR) << "Could not parse binary data."; |
| return false; |
| } |
| return true; |
| } |
| |
| ShortNumberInfo::ShortNumberInfo() |
| : phone_util_(*PhoneNumberUtil::GetInstance()), |
| region_to_short_metadata_map_(new map<string, PhoneMetadata>()), |
| regions_where_emergency_numbers_must_be_exact_(new set<string>()) { |
| PhoneMetadataCollection metadata_collection; |
| if (!LoadCompiledInMetadata(&metadata_collection)) { |
| LOG(DFATAL) << "Could not parse compiled-in metadata."; |
| return; |
| } |
| for (RepeatedPtrField<PhoneMetadata>::const_iterator it = |
| metadata_collection.metadata().begin(); |
| it != metadata_collection.metadata().end(); |
| ++it) { |
| const string& region_code = it->id(); |
| region_to_short_metadata_map_->insert(make_pair(region_code, *it)); |
| } |
| regions_where_emergency_numbers_must_be_exact_->insert("BR"); |
| regions_where_emergency_numbers_must_be_exact_->insert("CL"); |
| regions_where_emergency_numbers_must_be_exact_->insert("NI"); |
| } |
| |
| // Returns a pointer to the phone metadata for the appropriate region or NULL |
| // if the region code is invalid or unknown. |
| const PhoneMetadata* ShortNumberInfo::GetMetadataForRegion( |
| const string& region_code) const { |
| map<string, PhoneMetadata>::const_iterator it = |
| region_to_short_metadata_map_->find(region_code); |
| if (it != region_to_short_metadata_map_->end()) { |
| return &it->second; |
| } |
| return NULL; |
| } |
| |
| bool ShortNumberInfo::IsPossibleShortNumberForRegion(const string& short_number, |
| const string& region_dialing_from) const { |
| const PhoneMetadata* phone_metadata = |
| GetMetadataForRegion(region_dialing_from); |
| if (!phone_metadata) { |
| return false; |
| } |
| const PhoneNumberDesc& general_desc = phone_metadata->general_desc(); |
| return phone_util_.IsNumberPossibleForDesc(short_number, general_desc); |
| } |
| |
| bool ShortNumberInfo::IsPossibleShortNumber(const PhoneNumber& number) const { |
| list<string> region_codes; |
| phone_util_.GetRegionCodesForCountryCallingCode(number.country_code(), |
| ®ion_codes); |
| string short_number; |
| phone_util_.GetNationalSignificantNumber(number, &short_number); |
| for (list<string>::const_iterator it = region_codes.begin(); |
| it != region_codes.end(); ++it) { |
| const PhoneMetadata* phone_metadata = GetMetadataForRegion(*it); |
| if (phone_util_.IsNumberPossibleForDesc(short_number, |
| phone_metadata->general_desc())) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| bool ShortNumberInfo::IsValidShortNumberForRegion(const string& short_number, |
| const string& region_dialing_from) const { |
| const PhoneMetadata* phone_metadata = |
| GetMetadataForRegion(region_dialing_from); |
| if (!phone_metadata) { |
| return false; |
| } |
| const PhoneNumberDesc& general_desc = phone_metadata->general_desc(); |
| if (!general_desc.has_national_number_pattern() || |
| !phone_util_.IsNumberMatchingDesc(short_number, general_desc)) { |
| return false; |
| } |
| const PhoneNumberDesc& short_number_desc = phone_metadata->short_code(); |
| if (!short_number_desc.has_national_number_pattern()) { |
| LOG(WARNING) << "No short code national number pattern found for region: " |
| << region_dialing_from; |
| return false; |
| } |
| return phone_util_.IsNumberMatchingDesc(short_number, short_number_desc); |
| } |
| |
| bool ShortNumberInfo::IsValidShortNumber(const PhoneNumber& number) const { |
| list<string> region_codes; |
| phone_util_.GetRegionCodesForCountryCallingCode(number.country_code(), |
| ®ion_codes); |
| string short_number; |
| phone_util_.GetNationalSignificantNumber(number, &short_number); |
| string region_code; |
| GetRegionCodeForShortNumberFromRegionList(number, |
| region_codes, ®ion_code); |
| if (region_codes.size() > 1 && region_code != RegionCode::GetUnknown()) { |
| return true; |
| } |
| return IsValidShortNumberForRegion(short_number, region_code); |
| } |
| |
| ShortNumberInfo::ShortNumberCost ShortNumberInfo::GetExpectedCostForRegion( |
| const string& short_number, const string& region_dialing_from) const { |
| const PhoneMetadata* phone_metadata = GetMetadataForRegion( |
| region_dialing_from); |
| if (!phone_metadata) { |
| return ShortNumberInfo::UNKNOWN_COST; |
| } |
| |
| // The cost categories are tested in order of decreasing expense, since if |
| // for some reason the patterns overlap the most expensive matching cost |
| // category should be returned. |
| if (phone_util_.IsNumberMatchingDesc(short_number, |
| phone_metadata->premium_rate())) { |
| return ShortNumberInfo::PREMIUM_RATE; |
| } |
| if (phone_util_.IsNumberMatchingDesc(short_number, |
| phone_metadata->standard_rate())) { |
| return ShortNumberInfo::STANDARD_RATE; |
| } |
| if (phone_util_.IsNumberMatchingDesc(short_number, |
| phone_metadata->toll_free())) { |
| return ShortNumberInfo::TOLL_FREE; |
| } |
| if (IsEmergencyNumber(short_number, region_dialing_from)) { |
| // Emergency numbers are implicitly toll-free. |
| return ShortNumberInfo::TOLL_FREE; |
| } |
| return ShortNumberInfo::UNKNOWN_COST; |
| } |
| |
| ShortNumberInfo::ShortNumberCost ShortNumberInfo::GetExpectedCost( |
| const PhoneNumber& number) const { |
| list<string> region_codes; |
| phone_util_.GetRegionCodesForCountryCallingCode(number.country_code(), |
| ®ion_codes); |
| if (region_codes.size() == 0) { |
| return ShortNumberInfo::UNKNOWN_COST; |
| } |
| string short_number; |
| phone_util_.GetNationalSignificantNumber(number, &short_number); |
| if (region_codes.size() == 1) { |
| return GetExpectedCostForRegion(short_number, region_codes.front()); |
| } |
| ShortNumberInfo::ShortNumberCost cost = |
| ShortNumberInfo::TOLL_FREE; |
| for (list<string>::const_iterator it = region_codes.begin(); |
| it != region_codes.end(); ++it) { |
| ShortNumberInfo::ShortNumberCost cost_for_region = |
| GetExpectedCostForRegion(short_number, *it); |
| switch (cost_for_region) { |
| case ShortNumberInfo::PREMIUM_RATE: |
| return ShortNumberInfo::PREMIUM_RATE; |
| case ShortNumberInfo::UNKNOWN_COST: |
| return ShortNumberInfo::UNKNOWN_COST; |
| case ShortNumberInfo::STANDARD_RATE: |
| if (cost != ShortNumberInfo::UNKNOWN_COST) { |
| cost = ShortNumberInfo::STANDARD_RATE; |
| } |
| break; |
| case ShortNumberInfo::TOLL_FREE: |
| // Do nothing. |
| break; |
| default: |
| LOG(ERROR) << "Unrecognised cost for region: " |
| << static_cast<int>(cost_for_region); |
| break; |
| } |
| } |
| return cost; |
| } |
| |
| void ShortNumberInfo::GetRegionCodeForShortNumberFromRegionList( |
| const PhoneNumber& number, const list<string>& region_codes, |
| string* region_code) const { |
| if (region_codes.size() == 0) { |
| region_code->assign(RegionCode::GetUnknown()); |
| } else if (region_codes.size() == 1) { |
| region_code->assign(region_codes.front()); |
| } |
| string national_number; |
| phone_util_.GetNationalSignificantNumber(number, &national_number); |
| for (list<string>::const_iterator it = region_codes.begin(); |
| it != region_codes.end(); ++it) { |
| const PhoneMetadata* phone_metadata = GetMetadataForRegion(*it); |
| if (phone_metadata != NULL && |
| phone_util_.IsNumberMatchingDesc(national_number, |
| phone_metadata->short_code())) { |
| // The number is valid for this region. |
| region_code->assign(*it); |
| } |
| } |
| region_code->assign(RegionCode::GetUnknown()); |
| } |
| |
| string ShortNumberInfo::GetExampleShortNumber(const string& region_code) const { |
| const PhoneMetadata* phone_metadata = GetMetadataForRegion(region_code); |
| if (!phone_metadata) { |
| return ""; |
| } |
| const PhoneNumberDesc& desc = phone_metadata->short_code(); |
| if (desc.has_example_number()) { |
| return desc.example_number(); |
| } |
| return ""; |
| } |
| |
| string ShortNumberInfo::GetExampleShortNumberForCost(const string& region_code, |
| ShortNumberInfo::ShortNumberCost cost) const { |
| const PhoneMetadata* phone_metadata = GetMetadataForRegion(region_code); |
| if (!phone_metadata) { |
| return ""; |
| } |
| const PhoneNumberDesc* desc = NULL; |
| switch (cost) { |
| case TOLL_FREE: |
| desc = &(phone_metadata->toll_free()); |
| break; |
| case STANDARD_RATE: |
| desc = &(phone_metadata->standard_rate()); |
| break; |
| case PREMIUM_RATE: |
| desc = &(phone_metadata->premium_rate()); |
| break; |
| default: |
| // UNKNOWN_COST numbers are computed by the process of elimination from |
| // the other cost categories. |
| break; |
| } |
| if (desc != NULL && desc->has_example_number()) { |
| return desc->example_number(); |
| } |
| return ""; |
| } |
| |
| bool ShortNumberInfo::ConnectsToEmergencyNumber(const string& number, |
| const string& region_code) const { |
| return MatchesEmergencyNumberHelper(number, region_code, |
| true /* allows prefix match */); |
| } |
| |
| bool ShortNumberInfo::IsEmergencyNumber(const string& number, |
| const string& region_code) const { |
| return MatchesEmergencyNumberHelper(number, region_code, |
| false /* doesn't allow prefix match */); |
| } |
| |
| bool ShortNumberInfo::MatchesEmergencyNumberHelper(const string& number, |
| const string& region_code, bool allow_prefix_match) const { |
| string extracted_number; |
| phone_util_.ExtractPossibleNumber(number, &extracted_number); |
| if (phone_util_.StartsWithPlusCharsPattern(extracted_number)) { |
| // Returns false if the number starts with a plus sign. We don't believe |
| // dialing the country code before emergency numbers (e.g. +1911) works, |
| // but later, if that proves to work, we can add additional logic here to |
| // handle it. |
| return false; |
| } |
| const PhoneMetadata* metadata = GetMetadataForRegion(region_code); |
| if (!metadata || !metadata->has_emergency()) { |
| return false; |
| } |
| const scoped_ptr<const AbstractRegExpFactory> regexp_factory( |
| new RegExpFactory()); |
| const scoped_ptr<const RegExp> emergency_number_pattern( |
| regexp_factory->CreateRegExp( |
| metadata->emergency().national_number_pattern())); |
| phone_util_.NormalizeDigitsOnly(&extracted_number); |
| const scoped_ptr<RegExpInput> normalized_number_input( |
| regexp_factory->CreateInput(extracted_number)); |
| |
| return (!allow_prefix_match || |
| regions_where_emergency_numbers_must_be_exact_->find(region_code) |
| != regions_where_emergency_numbers_must_be_exact_->end()) |
| ? emergency_number_pattern->FullMatch(extracted_number) |
| : emergency_number_pattern->Consume(normalized_number_input.get()); |
| } |
| |
| bool ShortNumberInfo::IsCarrierSpecific(const PhoneNumber& number) const { |
| list<string> region_codes; |
| phone_util_.GetRegionCodesForCountryCallingCode(number.country_code(), |
| ®ion_codes); |
| string region_code; |
| GetRegionCodeForShortNumberFromRegionList(number, |
| region_codes, ®ion_code); |
| string national_number; |
| phone_util_.GetNationalSignificantNumber(number, &national_number); |
| const PhoneMetadata* phone_metadata = GetMetadataForRegion(region_code); |
| return phone_metadata && |
| phone_util_.IsNumberMatchingDesc(national_number, |
| phone_metadata->carrier_specific()); |
| } |
| |
| } // namespace phonenumbers |
| } // namespace i18n |