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- // 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();
- }
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