| |
| // Copyright 1998-2002 John Maddock |
| // Copyright 2017 Peter Dimov |
| // |
| // Distributed under the Boost Software License, Version 1.0. |
| // |
| // See accompanying file LICENSE_1_0.txt or copy at |
| // http://www.boost.org/LICENSE_1_0.txt |
| |
| // See library home page at http://www.boost.org/libs/regex |
| |
| #include <boost/regex.hpp> |
| #include <boost/core/lightweight_test.hpp> |
| #include <string> |
| |
| bool validate_card_format(const std::string& s) |
| { |
| static const boost::regex e("(\\d{4}[- ]){3}\\d{4}"); |
| return boost::regex_match(s, e); |
| } |
| |
| const boost::regex card_rx("\\A(\\d{3,4})[- ]?(\\d{4})[- ]?(\\d{4})[- ]?(\\d{4})\\z"); |
| const std::string machine_format("\\1\\2\\3\\4"); |
| const std::string human_format("\\1-\\2-\\3-\\4"); |
| |
| std::string machine_readable_card_number(const std::string& s) |
| { |
| return boost::regex_replace(s, card_rx, machine_format, boost::match_default | boost::format_sed); |
| } |
| |
| std::string human_readable_card_number(const std::string& s) |
| { |
| return boost::regex_replace(s, card_rx, human_format, boost::match_default | boost::format_sed); |
| } |
| |
| int main() |
| { |
| std::string s[ 4 ] = { "0000111122223333", "0000 1111 2222 3333", "0000-1111-2222-3333", "000-1111-2222-3333" }; |
| |
| BOOST_TEST( !validate_card_format( s[0] ) ); |
| BOOST_TEST_EQ( machine_readable_card_number( s[0] ), s[0] ); |
| BOOST_TEST_EQ( human_readable_card_number( s[0] ), s[2] ); |
| |
| BOOST_TEST( validate_card_format( s[1] ) ); |
| BOOST_TEST_EQ( machine_readable_card_number( s[1] ), s[0] ); |
| BOOST_TEST_EQ( human_readable_card_number( s[1] ), s[2] ); |
| |
| BOOST_TEST( validate_card_format( s[2] ) ); |
| BOOST_TEST_EQ( machine_readable_card_number( s[2] ), s[0] ); |
| BOOST_TEST_EQ( human_readable_card_number( s[2] ), s[2] ); |
| |
| BOOST_TEST( !validate_card_format( s[3] ) ); |
| |
| return boost::report_errors(); |
| } |