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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.
// Author: David Yonge-Mallo
#include "phonenumbers/shortnumberutil.h"
#include "phonenumbers/base/memory/scoped_ptr.h"
#include "phonenumbers/phonemetadata.pb.h"
#include "phonenumbers/phonenumberutil.h"
#include "phonenumbers/regexp_adapter.h"
#include "phonenumbers/regexp_factory.h"
namespace i18n {
namespace phonenumbers {
using std::string;
ShortNumberUtil::ShortNumberUtil()
: phone_util_(*PhoneNumberUtil::GetInstance()) {
}
bool ShortNumberUtil::ConnectsToEmergencyNumber(const string& number,
const string& region_code) const {
return MatchesEmergencyNumberHelper(number, region_code,
true /* allows prefix match */);
}
bool ShortNumberUtil::IsEmergencyNumber(const string& number,
const string& region_code) const {
return MatchesEmergencyNumberHelper(number, region_code,
false /* doesn't allow prefix match */);
}
bool ShortNumberUtil::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 = phone_util_.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));
// In Brazil, emergency numbers don't work when additional digits are
// appended.
return (!allow_prefix_match || region_code == "BR")
? emergency_number_pattern->FullMatch(extracted_number)
: emergency_number_pattern->Consume(normalized_number_input.get());
}
} // namespace phonenumbers
} // namespace i18n
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