encryption.cpp
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// Copyright (c) 2009-2020 Vladimir Batov.
// Use, modification and distribution are subject to the Boost Software License,
// Version 1.0. See http://www.boost.org/LICENSE_1_0.txt.
#include "./test.hpp"
#if !defined(BOOST_CONVERT_CXX14)
int main(int, char const* []) { return 0; }
#else
#include <boost/convert.hpp>
static
bool
my_cypher(std::string const& value_in, boost::optional<std::string>& value_out)
{
size_t const cypher = 'A' - '1';
value_out = value_in;
for (std::string::iterator it = value_out->begin(); it != value_out->end(); ++it)
(*it < 'A') ? (*it += cypher) : (*it -= cypher);
return true;
}
int
main(int, char const* [])
{
////////////////////////////////////////////////////////////////////////////
// Testing custom converter.
////////////////////////////////////////////////////////////////////////////
std::string encrypted = boost::convert<std::string>("ABC", my_cypher).value();
std::string decrypted = boost::convert<std::string>(encrypted, my_cypher).value();
BOOST_TEST(encrypted == "123");
BOOST_TEST(decrypted == "ABC");
return boost::report_errors();
}
#endif