ceph/src/boost/libs/regex/test/quick.cpp

   1
   2 // Copyright 1998-2002 John Maddock
   3 // Copyright 2017 Peter Dimov
   4 //
   5 // Distributed under the Boost Software License, Version 1.0.
   6 //
   7 // See accompanying file LICENSE_1_0.txt or copy at
   8 // http://www.boost.org/LICENSE_1_0.txt
   9
  10 // See library home page at http://www.boost.org/libs/regex
  11
  12 #include <boost/regex.hpp>
  13 #include <cassert>
  14 #include <string>
  15
  16 bool validate_card_format(const std::string& s)
  17 {
  18     static const boost::regex e("(\\d{4}[- ]){3}\\d{4}");
  19     return boost::regex_match(s, e);
  20 }
  21
  22 const boost::regex card_rx("\\A(\\d{3,4})[- ]?(\\d{4})[- ]?(\\d{4})[- ]?(\\d{4})\\z");
  23 const std::string machine_format("\\1\\2\\3\\4");
  24 const std::string human_format("\\1-\\2-\\3-\\4");
  25
  26 std::string machine_readable_card_number(const std::string& s)
  27 {
  28     return boost::regex_replace(s, card_rx, machine_format, boost::match_default | boost::format_sed);
  29 }
  30
  31 std::string human_readable_card_number(const std::string& s)
  32 {
  33     return boost::regex_replace(s, card_rx, human_format, boost::match_default | boost::format_sed);
  34 }
  35
  36 int main()
  37 {
  38     std::string s[ 4 ] = { "0000111122223333", "0000 1111 2222 3333", "0000-1111-2222-3333", "000-1111-2222-3333" };
  39
  40     assert(!validate_card_format(s[0]));
  41     assert(machine_readable_card_number(s[0]) == s[0]);
  42     assert(human_readable_card_number(s[0]) == s[2]);
  43
  44     assert(validate_card_format(s[1]));
  45     assert(machine_readable_card_number(s[1]) == s[0]);
  46     assert(human_readable_card_number(s[1]) == s[2]);
  47
  48     assert(validate_card_format(s[2]));
  49     assert(machine_readable_card_number(s[2]) == s[0]);
  50     assert(human_readable_card_number(s[2]) == s[2]);
  51
  52     assert(!validate_card_format(s[3]));
  53
  54     return 0;
  55 }