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57 lines
2.3 KiB
C++
57 lines
2.3 KiB
C++
// Boost.Convert library test and usage example
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// Copyright (c) 2009-2014 Vladimir Batov.
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// Use, modification and distribution are subject to the Boost Software License,
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// Version 1.0. See http://www.boost.org/LICENSE_1_0.txt.
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#include "./test.hpp"
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using std::string;
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void
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test::sstream_locale()
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{
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boost::cstringstream_converter cnv;
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char const* eng_locale_name = test::is_msc ? "" // I do not know MS presentation of US locale
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: test::is_gcc ? "en_US.UTF-8"
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: "";
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char const* rus_locale_name = test::is_msc ? "Russian_Russia.1251"
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: test::is_gcc ? "ru_RU.UTF-8"
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: "";
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char const* rus_expected = test::is_msc ? "1,235e-002" : test::is_gcc ? "1,235e-02" : "";
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char const* eng_expected = test::is_msc ? "1.235e-002" : test::is_gcc ? "1.235e-02" : "";
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std::locale rus_locale;
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std::locale eng_locale;
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char const* double_s01 = test::is_msc ? "1.2345E-002"
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: test::is_gcc ? "1.2345E-02"
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: "";
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// cnv(std::setprecision(4))(std::uppercase)(std::scientific);
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cnv(arg::precision = 4)
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(arg::uppercase = true)
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(arg::notation = cnv::notation::scientific);
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double double_v01 = boost::convert<double>(double_s01, cnv).value();
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string double_s02 = boost::convert<string>(double_v01, cnv).value();
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BOOST_TEST(double_s01 == double_s02);
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try { rus_locale = std::locale(rus_locale_name); }
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catch (...) { printf("Test failed: bad locale %s.\n", rus_locale_name); exit(1); }
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try { eng_locale = std::locale(eng_locale_name); }
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catch (...) { printf("Test failed: bad locale %s.\n", eng_locale_name); exit(1); }
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// cnv(std::setprecision(3))(std::nouppercase);
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cnv(arg::precision = 3)(arg::uppercase = false);
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string double_rus = boost::convert<string>(double_v01, cnv(rus_locale)).value();
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string double_eng = boost::convert<string>(double_v01, cnv(eng_locale)).value();
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printf("rus locale=%s, presentation=%s.\n", rus_locale.name().c_str(), double_rus.c_str());
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printf("eng locale=%s, presentation=%s.\n", eng_locale.name().c_str(), double_eng.c_str());
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BOOST_TEST(double_rus == rus_expected);
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BOOST_TEST(double_eng == eng_expected);
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}
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