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78 lines
2.8 KiB
78 lines
2.8 KiB
// Copyright (C) 2012 The Libphonenumber Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// Author: David Yonge-Mallo
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#include "phonenumbers/shortnumberutil.h"
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#include "base/memory/scoped_ptr.h"
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#include "phonenumbers/phonemetadata.pb.h"
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#include "phonenumbers/phonenumberutil.h"
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#include "phonenumbers/regexp_adapter.h"
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#include "phonenumbers/regexp_factory.h"
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namespace i18n {
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namespace phonenumbers {
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using std::string;
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ShortNumberUtil::ShortNumberUtil()
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: phone_util_(*PhoneNumberUtil::GetInstance()) {
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}
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bool ShortNumberUtil::ConnectsToEmergencyNumber(const string& number,
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const string& region_code) const {
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return MatchesEmergencyNumberHelper(number, region_code,
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true /* allows prefix match */);
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}
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bool ShortNumberUtil::IsEmergencyNumber(const string& number,
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const string& region_code) const {
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return MatchesEmergencyNumberHelper(number, region_code,
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false /* doesn't allow prefix match */);
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}
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bool ShortNumberUtil::MatchesEmergencyNumberHelper(const string& number,
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const string& region_code, bool allow_prefix_match) const {
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string extracted_number;
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phone_util_.ExtractPossibleNumber(number, &extracted_number);
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if (phone_util_.StartsWithPlusCharsPattern(extracted_number)) {
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// Returns false if the number starts with a plus sign. We don't believe
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// dialing the country code before emergency numbers (e.g. +1911) works,
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// but later, if that proves to work, we can add additional logic here to
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// handle it.
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return false;
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}
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const PhoneMetadata* metadata = phone_util_.GetMetadataForRegion(region_code);
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if (!metadata || !metadata->has_emergency()) {
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return false;
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}
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const scoped_ptr<const AbstractRegExpFactory> regexp_factory(
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new RegExpFactory());
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const scoped_ptr<const RegExp> emergency_number_pattern(
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regexp_factory->CreateRegExp(
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metadata->emergency().national_number_pattern()));
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phone_util_.NormalizeDigitsOnly(&extracted_number);
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const scoped_ptr<RegExpInput> normalized_number_input(
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regexp_factory->CreateInput(extracted_number));
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// In Brazil, emergency numbers don't work when additional digits are
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// appended.
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return (!allow_prefix_match || region_code == "BR")
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? emergency_number_pattern->FullMatch(extracted_number)
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: emergency_number_pattern->Consume(normalized_number_input.get());
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}
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} // namespace phonenumbers
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} // namespace i18n
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