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- // Boost.Convert test and usage example
- // Copyright (c) 2009-2016 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_IS_NOT_SUPPORTED)
- int main(int, char const* []) { return 0; }
- #else
- #include <boost/convert.hpp>
- #include <boost/convert/printf.hpp>
- #include <boost/convert/stream.hpp>
- #include <boost/detail/lightweight_test.hpp>
- #include <boost/random/mersenne_twister.hpp>
- #include <boost/random/uniform_int_distribution.hpp>
- #include <boost/random/uniform_01.hpp>
- #include <boost/lexical_cast.hpp>
- #include <boost/utility/string_view.hpp>
- //[strtol_basic_deployment_header
- #include <boost/convert.hpp>
- #include <boost/convert/strtol.hpp>
- using std::string;
- using std::wstring;
- using boost::convert;
- struct boost::cnv::by_default : boost::cnv::strtol {};
- //]
- static
- void
- test_str_to_uint()
- {
- string const bad_str = "not an int";
- string const neg_str = "-11";
- string const std_str = "11";
- char const* const c_str = "12";
- boost::string_view v_str = boost::string_view(c_str, 1);
- unsigned int const imax = (std::numeric_limits<unsigned int>::max)();
- unsigned long int const lmax = (std::numeric_limits<unsigned long int>::max)();
- std::string const imax_str = boost::lexical_cast<std::string>(imax);
- std::string const lmax_str = boost::lexical_cast<std::string>(lmax);
- BOOST_TEST( 0 == convert<unsigned int>(bad_str).value_or(0));
- BOOST_TEST( 0 == convert<unsigned int>(neg_str).value_or(0));
- BOOST_TEST( 0 == convert<unsigned long int>(neg_str).value_or(0));
- BOOST_TEST( 0 == convert<unsigned long int>(neg_str).value_or(0));
- BOOST_TEST(11 == convert<unsigned int>(std_str).value());
- BOOST_TEST(12 == convert<unsigned int>( c_str).value());
- BOOST_TEST( 1 == convert<unsigned int>( v_str).value_or(0));
- BOOST_TEST(11 == convert<unsigned long int>(std_str).value());
- BOOST_TEST(12 == convert<unsigned long int>( c_str).value());
- BOOST_TEST(imax == convert< unsigned int>(imax_str).value());
- BOOST_TEST(lmax == convert<unsigned long int>(lmax_str).value());
- }
- static
- void
- test_str_to_int()
- {
- //[strtol_basic_deployment
- string const bad_str = "not an int";
- string const std_str = "-11";
- char const* const c_str = "-12";
- boost::string_view v_str = boost::string_view(c_str, 2);
- BOOST_TEST( -1 == convert<int>(bad_str).value_or(-1));
- BOOST_TEST(-11 == convert<int>(std_str).value());
- BOOST_TEST(-12 == convert<int>( c_str).value());
- BOOST_TEST( -1 == convert<int>( v_str).value_or(0));
- //]
- wstring const bad_wstr = L"not an int";
- wstring const wstd_str = L"-11";
- wchar_t const* const wc_str = L"-12";
- BOOST_TEST( -1 == convert<int>(bad_wstr).value_or(-1));
- BOOST_TEST(-11 == convert<int>(wstd_str).value());
- BOOST_TEST(-12 == convert<int>( wc_str).value());
- }
- static
- void
- test_int_to_str()
- {
- short const s_int = -123;
- int const i_int = -123;
- long const l_int = -123;
- long long const ll_int = -123;
- BOOST_TEST( "-123" == convert< std::string> ( s_int).value());
- BOOST_TEST( "-123" == convert< std::string> ( i_int).value());
- BOOST_TEST( "-123" == convert< std::string> ( l_int).value());
- BOOST_TEST( "-123" == convert< std::string> (ll_int).value());
- BOOST_TEST(L"-123" == convert<std::wstring> ( s_int).value());
- BOOST_TEST(L"-123" == convert<std::wstring> ( i_int).value());
- BOOST_TEST(L"-123" == convert<std::wstring> ( l_int).value());
- BOOST_TEST(L"-123" == convert<std::wstring> (ll_int).value());
- int const imin = (std::numeric_limits<int>::min)();
- int const imax = (std::numeric_limits<int>::max)();
- long int const lmin = (std::numeric_limits<long int>::min)();
- long int const lmax = (std::numeric_limits<long int>::max)();
- long long int const llmin = (std::numeric_limits<long long int>::min)();
- long long int const llmax = (std::numeric_limits<long long int>::max)();
- std::string const imin_str = boost::lexical_cast<std::string>(imin);
- std::string const imax_str = boost::lexical_cast<std::string>(imax);
- std::string const lmin_str = boost::lexical_cast<std::string>(lmin);
- std::string const lmax_str = boost::lexical_cast<std::string>(lmax);
- std::string const llmin_str = boost::lexical_cast<std::string>(llmin);
- std::string const llmax_str = boost::lexical_cast<std::string>(llmax);
- BOOST_TEST( imin_str == convert<std::string>( imin).value());
- BOOST_TEST( imax_str == convert<std::string>( imax).value());
- BOOST_TEST( lmin_str == convert<std::string>( lmin).value());
- BOOST_TEST( lmax_str == convert<std::string>( lmax).value());
- BOOST_TEST(llmin_str == convert<std::string>(llmin).value());
- BOOST_TEST(llmax_str == convert<std::string>(llmax).value());
- }
- static
- void
- test_uint_to_str()
- {
- unsigned short const us_int = 123;
- unsigned int const ui_int = 123;
- unsigned long const ul_int = 123;
- unsigned long long const ull_int = 123;
- BOOST_TEST( "123" == convert< std::string> ( us_int).value());
- BOOST_TEST( "123" == convert< std::string> ( ui_int).value());
- BOOST_TEST( "123" == convert< std::string> ( ul_int).value());
- BOOST_TEST( "123" == convert< std::string> (ull_int).value());
- BOOST_TEST(L"123" == convert<std::wstring> ( us_int).value());
- BOOST_TEST(L"123" == convert<std::wstring> ( ui_int).value());
- BOOST_TEST(L"123" == convert<std::wstring> ( ul_int).value());
- BOOST_TEST(L"123" == convert<std::wstring> (ull_int).value());
- unsigned int const uimax = (std::numeric_limits<unsigned int>::max)();
- unsigned long int const ulmax = (std::numeric_limits<unsigned long int>::max)();
- unsigned long long int const ullmax = (std::numeric_limits<unsigned long long int>::max)();
- std::string const uimax_str = boost::lexical_cast<std::string>( uimax);
- std::string const ulmax_str = boost::lexical_cast<std::string>( ulmax);
- std::string const ullmax_str = boost::lexical_cast<std::string>(ullmax);
- BOOST_TEST( uimax_str == convert<std::string>( uimax).value());
- BOOST_TEST( ulmax_str == convert<std::string>( ulmax).value());
- BOOST_TEST(ullmax_str == convert<std::string>(ullmax).value());
- }
- //[strtol_numeric_base_header
- #include <boost/convert.hpp>
- #include <boost/convert/strtol.hpp>
- using std::string;
- using std::wstring;
- using boost::convert;
- namespace cnv = boost::cnv;
- namespace arg = boost::cnv::parameter;
- //]
- static
- void
- test_width()
- {
- //[strtol_width
- boost::cnv::strtol cnv;
- string s01 = convert<string>( 12, cnv(arg::width = 4)).value();
- string s02 = convert<string>( 12, cnv(arg::width = 5)
- (arg::fill = '*')).value();
- string s03 = convert<string>( 12, cnv(arg::width = 5)
- (arg::fill = 'x')
- (arg::adjust = cnv::adjust::left)).value();
- string s04 = convert<string>(-98, cnv(arg::width = 6)
- (arg::fill = 'Z')
- (arg::adjust = cnv::adjust::right)).value();
- string s05 = convert<string>(-12.3451, cnv(arg::precision = 2)
- (arg::width = 10)
- (arg::fill = '*')
- (arg::adjust = cnv::adjust::left)).value();
- string s06 = convert<string>(-12.3450, cnv(arg::adjust = cnv::adjust::right)).value();
- string s07 = convert<string>(-12.3450, cnv(arg::adjust = cnv::adjust::center)).value();
- BOOST_TEST(s01 == " 12");
- BOOST_TEST(s02 == "***12");
- BOOST_TEST(s03 == "12xxx");
- BOOST_TEST(s04 == "ZZZ-98");
- BOOST_TEST(s05 == "-12.35****");
- BOOST_TEST(s06 == "****-12.35");
- BOOST_TEST(s07 == "**-12.35**");
- //]
- }
- static
- void
- test_base()
- {
- //[strtol_numeric_base
- boost::cnv::strtol cnv;
- BOOST_TEST( "11111110" == convert< string>(254, cnv(arg::base = cnv::base::bin)).value());
- BOOST_TEST( "254" == convert< string>(254, cnv(arg::base = cnv::base::dec)).value());
- BOOST_TEST( "FE" == convert< string>(254, cnv(arg::base = cnv::base::hex)).value());
- BOOST_TEST( "376" == convert< string>(254, cnv(arg::base = cnv::base::oct)).value());
- //]
- //[wide_strtol_numeric_base
- BOOST_TEST(L"11111110" == convert<wstring>(254, cnv(arg::base = cnv::base::bin)).value());
- BOOST_TEST( L"254" == convert<wstring>(254, cnv(arg::base = cnv::base::dec)).value());
- BOOST_TEST( L"FE" == convert<wstring>(254, cnv(arg::base = cnv::base::hex)).value());
- BOOST_TEST( L"376" == convert<wstring>(254, cnv(arg::base = cnv::base::oct)).value());
- //]
- }
- static
- void
- test_upper()
- {
- // boost::cnv::strtol cnv;
- // char const* c_lcase = "abcde";
- // char const* c_ucase = "ABCDE";
- // wchar_t const* w_lcase = L"abcde";
- // wchar_t const* w_ucase = L"ABCDE";
- //
- // BOOST_TEST(c_lcase == convert< string>(c_lcase, cnv(arg::uppercase = false)).value_or(""));
- // BOOST_TEST(c_ucase == convert< string>(c_lcase, cnv(arg::uppercase = true)).value_or(""));
- // BOOST_TEST(w_ucase == convert<wstring>(w_lcase, cnv(arg::uppercase = false)).value_or(""));
- // BOOST_TEST(w_ucase == convert<wstring>(w_lcase, cnv(arg::uppercase = true)).value_or(""));
- }
- static
- void
- test_skipws()
- {
- //[strtol_skipws
- boost::cnv::strtol cnv;
- BOOST_TEST(-1 == convert<int>( " 12", cnv(arg::skipws = false)).value_or(-1));
- BOOST_TEST(12 == convert<int>( " 12", cnv(arg::skipws = true)).value_or(-1));
- //]
- //[wide_strtol_skipws
- BOOST_TEST(-1 == convert<int>(L" 12", cnv(arg::skipws = false)).value_or(-1));
- BOOST_TEST(12 == convert<int>(L" 12", cnv(arg::skipws = true)).value_or(-1));
- //]
- }
- static
- void
- dbl_to_str_example()
- {
- //[strtol_precision
- boost::cnv::strtol cnv;
- BOOST_TEST( "12.3" == convert<string>(12.3456, cnv(arg::precision = 1)).value());
- BOOST_TEST( "12.35" == convert<string>(12.3456, cnv(arg::precision = 2)).value());
- BOOST_TEST("12.346" == convert<string>(12.3456, cnv(arg::precision = 3)).value());
- BOOST_TEST( "-12.3" == convert<string>(-12.3456, cnv(arg::precision = 1)).value());
- BOOST_TEST( "-12.35" == convert<string>(-12.3456, cnv(arg::precision = 2)).value());
- BOOST_TEST("-12.346" == convert<string>(-12.3456, cnv(arg::precision = 3)).value());
- //]
- }
- static
- std::pair<double, int>
- get_random()
- {
- namespace rdm = boost::random;
- static rdm::mt19937 gen (::time(0));
- static rdm::uniform_int_distribution<> precision (0, 6);
- static rdm::uniform_int_distribution<> int_part (0, SHRT_MAX);
- static rdm::uniform_01<double> fraction; // uniform double in [0,1)
- static bool sign;
- double dbl = (int_part(gen) + fraction(gen)) * ((sign = !sign) ? 1 : -1);
- // printf("%.12f\n", dbl);
- return std::make_pair(dbl, precision(gen));
- }
- static
- void
- compare(std::pair<double, int const> pair)
- {
- boost::cnv::strtol cnv1;
- boost::cnv::printf cnv2;
- string s1 = convert<string>(pair.first, cnv1(arg::precision = pair.second)).value();
- string s2 = convert<string>(pair.first, cnv2(arg::precision = pair.second)).value();
- if (s1 != s2)
- printf("dbl=%.12f(%d).strtol/printf=%s/%s.\n", pair.first, pair.second, s1.c_str(), s2.c_str());
- }
- static
- void
- test_str_to_dbl()
- {
- char const* const c_str = "1.23456";
- BOOST_TEST(1.2 == convert<double>(boost::string_view(c_str, 3)).value_or(0));
- BOOST_TEST(1.23 == convert<double>(boost::string_view(c_str, 4)).value_or(0));
- }
- static
- void
- test_dbl_to_str()
- {
- // double round_up_abs01 = ::rint(-0.5);
- // double round_up_abs02 = ::round(-0.5);
- // double round_up_abs11 = ::rint(0.5);
- // double round_up_abs12 = ::round(0.5);
- // double huge_v = 987654321098765432109.123;
- //
- // printf("%f\n", huge_v);
- // string huge = convert<string>(huge_v, cnv1(arg::precision = 2)).value();
- // printf("%s\n", huge.c_str());
- int const num_tries = 1000000;
- double const dbls[] = { 0.90, 1.0, 1.1, 0.94, 0.96, 1.04, 1.05, 1.06, 9.654, 999.888 };
- int const num_dbls = sizeof(dbls) / sizeof(dbls[0]);
- printf("cnv::strtol::%s: started with %d random numbers...\n", __FUNCTION__, num_tries);
- BOOST_TEST( "0" == convert<string>( 0.0, cnv::strtol()(arg::precision = 0)).value());
- BOOST_TEST( "0.0" == convert<string>( 0.0, cnv::strtol()(arg::precision = 1)).value());
- BOOST_TEST("0.00" == convert<string>( 0.0, cnv::strtol()(arg::precision = 2)).value());
- BOOST_TEST( "1" == convert<string>(0.95, cnv::strtol()(arg::precision = 0)).value());
- BOOST_TEST( "1.0" == convert<string>(0.95, cnv::strtol()(arg::precision = 1)).value());
- BOOST_TEST("0.95" == convert<string>(0.95, cnv::strtol()(arg::precision = 2)).value());
- for (int k = 0; k < num_tries; ++k)
- compare(get_random());
- for (int k = 0; k < num_dbls; ++k)
- for (int precision = 0; precision < 3; ++precision)
- {
- compare(std::make_pair( dbls[k], precision));
- compare(std::make_pair(-dbls[k], precision));
- }
- printf("cnv::strtol::%s: finished.\n", __FUNCTION__);
- }
- static
- void
- test_user_string()
- {
- //[strtol_user_string
- boost::cnv::strtol cnv;
- BOOST_TEST( "12" == convert<my_string>(12, cnv).value());
- BOOST_TEST("0.95" == convert<my_string>(0.95, cnv(arg::precision = 2)).value());
- //]
- }
- static
- void
- test_user_type()
- {
- //[strtol_user_type
- boost::cnv::strtol cnv;
- change up_chg = change::up;
- change dn_chg = change::dn;
- BOOST_TEST(convert<std::string>(up_chg, cnv, "bad") == "up");
- BOOST_TEST(convert<std::string>(dn_chg, cnv, "bad") == "dn");
- BOOST_TEST(convert<std::string>( 12, cnv, "bad") == "12");
- BOOST_TEST(convert<change>("up", cnv, change::no) == change::up);
- BOOST_TEST(convert<change>("dn", cnv, change::no) == change::dn);
- BOOST_TEST(convert< int>("12", cnv, -1) == 12);
- //]
- }
- int
- main(int, char const* [])
- {
- dbl_to_str_example();
- test_str_to_int();
- test_str_to_uint();
- test_int_to_str();
- test_uint_to_str();
- test_base();
- test_upper();
- test_skipws();
- test_str_to_dbl();
- test_dbl_to_str();
- test_width();
- test_user_string();
- test_user_type();
- return boost::report_errors();
- }
- #endif
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