test/std/localization/locale.categories/category.ctype/locale.ctype.byname/narrow_many.pass.cpp

//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//

// REQUIRES: locale.en_US.UTF-8
// REQUIRES: locale.fr_CA.ISO8859-1

// <locale>

// template <class charT> class ctype_byname;

// const charT* narrow(const charT* low, const charT*, char dfault, char* to) const;

#include <locale>
#include <string>
#include <vector>
#include <cassert>

#include "test_macros.h"
#include "platform_support.h" // locale name macros

int main(int, char**)
{
    {
        std::locale l(LOCALE_fr_CA_ISO8859_1);
        {
            typedef std::ctype<wchar_t> F;
            const F& f = std::use_facet<F>(l);
            std::wstring in(L" A\x07.a1\xDA");
            std::vector<char> v(in.size());

            assert(f.narrow(&in[0], in.data() + in.size(), '*', v.data()) == in.data() + in.size());
            assert(v[0] == ' ');
            assert(v[1] == 'A');
            assert(v[2] == '\x07');
            assert(v[3] == '.');
            assert(v[4] == 'a');
            assert(v[5] == '1');
            assert(v[6] == '\xDA');
        }
    }
    {
        std::locale l(LOCALE_en_US_UTF_8);
        {
            typedef std::ctype<wchar_t> F;
            const F& f = std::use_facet<F>(l);
            std::wstring in(L" A\x07.a1\xDA");
            std::vector<char> v(in.size());

            assert(f.narrow(&in[0], in.data() + in.size(), '*', v.data()) == in.data() + in.size());
            assert(v[0] == ' ');
            assert(v[1] == 'A');
            assert(v[2] == '\x07');
            assert(v[3] == '.');
            assert(v[4] == 'a');
            assert(v[5] == '1');
            assert(v[6] == '*');
        }
    }

  return 0;
}