llvm/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype.byname/scan_is.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
//
//===----------------------------------------------------------------------===//

// <locale>

// template <class charT> class ctype_byname;

// const charT* scan_is(mask m, const charT* low, const charT* high) const;

// REQUIRES: locale.en_US.UTF-8
// XFAIL: no-wide-characters

// Bionic has minimal locale support, investigate this later.
// XFAIL: LIBCXX-ANDROID-FIXME

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

#include <stdio.h>

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

int main(int, char**)
{
    {
        std::locale l(LOCALE_en_US_UTF_8);
        {
            typedef std::ctype<wchar_t> F;
            const F& f = std::use_facet<F>(l);
            const std::wstring in(L"\x00DA A\x07.a1");
            std::vector<F::mask> m(in.size());
            assert(f.scan_is(F::space, in.data(), in.data() + in.size()) - in.data() == 1);
            assert(f.scan_is(F::print, in.data(), in.data() + in.size()) - in.data() == 0);
            assert(f.scan_is(F::cntrl, in.data(), in.data() + in.size()) - in.data() == 3);
            assert(f.scan_is(F::upper, in.data(), in.data() + in.size()) - in.data() == 0);
            assert(f.scan_is(F::lower, in.data(), in.data() + in.size()) - in.data() == 5);
            assert(f.scan_is(F::alpha, in.data(), in.data() + in.size()) - in.data() == 0);
            assert(f.scan_is(F::digit, in.data(), in.data() + in.size()) - in.data() == 6);
            assert(f.scan_is(F::punct, in.data(), in.data() + in.size()) - in.data() == 4);
            assert(f.scan_is(F::xdigit, in.data(), in.data() + in.size()) - in.data() == 2);
            assert(f.scan_is(F::blank, in.data(), in.data() + in.size()) - in.data() == 1);
            assert(f.scan_is(F::alnum, in.data(), in.data() + in.size()) - in.data() == 0);
            assert(f.scan_is(F::graph, in.data(), in.data() + in.size()) - in.data() == 0);
        }
    }
    {
        std::locale l("C");
        {
            typedef std::ctype<wchar_t> F;
            const F& f = std::use_facet<F>(l);
            const std::wstring in(L"\x00DA A\x07.a1");
            std::vector<F::mask> m(in.size());
            assert(f.scan_is(F::space, in.data(), in.data() + in.size()) - in.data() == 1);
            assert(f.scan_is(F::cntrl, in.data(), in.data() + in.size()) - in.data() == 3);
            assert(f.scan_is(F::lower, in.data(), in.data() + in.size()) - in.data() == 5);
            assert(f.scan_is(F::digit, in.data(), in.data() + in.size()) - in.data() == 6);
            assert(f.scan_is(F::punct, in.data(), in.data() + in.size()) - in.data() == 4);
            assert(f.scan_is(F::xdigit, in.data(), in.data() + in.size()) - in.data() == 2);
            assert(f.scan_is(F::blank, in.data(), in.data() + in.size()) - in.data() == 1);
#if !defined(_WIN32)
            // On Windows, these wchars are classified according to their
            // Unicode interpretation even in the "C" locale, where
            // the scan_is function returns the same as above for the
            // en_US.UTF-8 locale.
            assert(f.scan_is(F::print, in.data(), in.data() + in.size()) - in.data() == 1);
            assert(f.scan_is(F::upper, in.data(), in.data() + in.size()) - in.data() == 2);
            assert(f.scan_is(F::alpha, in.data(), in.data() + in.size()) - in.data() == 2);
            assert(f.scan_is(F::alnum, in.data(), in.data() + in.size()) - in.data() == 2);
            assert(f.scan_is(F::graph, in.data(), in.data() + in.size()) - in.data() == 2);
#endif
        }
    }

  return 0;
}