ceph/src/boost/libs/regex/example/snippets/credit_card_example.cpp

   1 /*
   2  *
   3  * Copyright (c) 1998-2002
   4  * John Maddock
   5  *
   6  * Use, modification and distribution are subject to the
   7  * Boost Software License, Version 1.0. (See accompanying file
   8  * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   9  *
  10  */
  11
  12  /*
  13   *   LOCATION:    see http://www.boost.org for most recent version.
  14   *   FILE         credit_card_example.cpp
  15   *   VERSION      see <boost/version.hpp>
  16   *   DESCRIPTION: Credit card number formatting code.
  17   */
  18
  19 #include <string>
  20 #include <boost/regex.hpp>
  21
  22 bool validate_card_format(const std::string& s)
  23 {
  24    static const boost::regex e("(\\d{4}[- ]){3}\\d{4}");
  25    return boost::regex_match(s, e);
  26 }
  27
  28 const boost::regex e("\\A(\\d{3,4})[- ]?(\\d{4})[- ]?(\\d{4})[- ]?(\\d{4})\\z");
  29 const std::string machine_format("\\1\\2\\3\\4");
  30 const std::string human_format("\\1-\\2-\\3-\\4");
  31
  32 std::string machine_readable_card_number(const std::string& s)
  33 {
  34    return boost::regex_replace(s, e, machine_format, boost::match_default | boost::format_sed);
  35 }
  36
  37 std::string human_readable_card_number(const std::string& s)
  38 {
  39    return boost::regex_replace(s, e, human_format, boost::match_default | boost::format_sed);
  40 }
  41
  42 #include <iostream>
  43 using namespace std;
  44
  45 int main()
  46 {
  47    string s[4] = { "0000111122223333", "0000 1111 2222 3333",
  48                    "0000-1111-2222-3333", "000-1111-2222-3333", };
  49    int i;
  50    for(i = 0; i < 4; ++i)
  51    {
  52       cout << "validate_card_format(\"" << s[i] << "\") returned " << validate_card_format(s[i]) << endl;
  53    }
  54    for(i = 0; i < 4; ++i)
  55    {
  56       cout << "machine_readable_card_number(\"" << s[i] << "\") returned " << machine_readable_card_number(s[i]) << endl;
  57    }
  58    for(i = 0; i < 4; ++i)
  59    {
  60       cout << "human_readable_card_number(\"" << s[i] << "\") returned " << human_readable_card_number(s[i]) << endl;
  61    }
  62    return 0;
  63 }
  64
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