48 lines
1.1 KiB
C++
48 lines
1.1 KiB
C++
#include "phone_number.h"
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#include <algorithm>
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#include <cctype>
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using namespace std;
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static const size_t number_size = 10;
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static const size_t area_code_size = 3;
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static const size_t exchange_size = 3;
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static const char invalid_number[] = "0000000000";
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phone_number::phone_number(const string &str)
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{
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number_.resize(str.size());
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string::iterator iter = copy_if(str.cbegin(), str.cend(),
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number_.begin(), static_cast<int (*)(int)>(isdigit));
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number_.resize(distance(number_.begin(), iter));
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if (number_.size() == number_size + 1 && number_.front() == '1') {
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number_.erase(number_.begin());
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}
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else if (number_.size() != number_size) {
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number_ = invalid_number;
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}
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}
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string phone_number::number() const
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{
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return number_;
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}
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string phone_number::area_code() const
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{
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return number_.substr(0, area_code_size);
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}
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phone_number::operator string() const
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{
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return string("(") + area_code() + ") "
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+ number_.substr(area_code_size, exchange_size)
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+ '-'
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+ number_.substr(area_code_size + exchange_size);
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}
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