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// Copyright (C) 2004-2019 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING3. If not see
// <http://www.gnu.org/licenses/>.
// 27.6.1.3 unformatted input functions
#include <cwchar> // for wcslen
#include <istream>
#include <testsuite_hooks.h>
class Inbuf : public std::wstreambuf
{
static const wchar_t buf[];
const wchar_t* current;
int size;
public:
Inbuf()
{
current = buf;
size = std::wcslen(buf);
}
int_type underflow()
{
if (current < buf + size)
return traits_type::to_int_type(*current);
return traits_type::eof();
}
int_type uflow()
{
if (current < buf + size)
return traits_type::to_int_type(*current++);
return traits_type::eof();
}
};
const wchar_t Inbuf::buf[] = L"1234567890abcdefghij";
void test01()
{
using namespace std;
typedef char_traits<wchar_t> traits_type;
Inbuf inbuf1;
wistream is(&inbuf1);
wchar_t buffer[10];
traits_type::assign(buffer, sizeof(buffer) / sizeof(wchar_t), L'X');
is.getline(buffer, sizeof(buffer) / sizeof(wchar_t), L'0');
VERIFY( is.rdstate() == ios_base::goodbit );
VERIFY( !traits_type::compare(buffer, L"123456789\0",
sizeof(buffer) / sizeof(wchar_t)) );
VERIFY( is.gcount() == 10 );
is.clear();
traits_type::assign(buffer, sizeof(buffer) / sizeof(wchar_t), L'X');
is.getline(buffer, sizeof(buffer) / sizeof(wchar_t));
VERIFY( is.rdstate() == ios_base::failbit );
VERIFY( !traits_type::compare(buffer, L"abcdefghi\0",
sizeof(buffer) / sizeof(wchar_t)) );
VERIFY( is.gcount() == 9 );
is.clear();
traits_type::assign(buffer, sizeof(buffer) / sizeof(wchar_t), L'X');
is.getline(buffer, sizeof(buffer) / sizeof(wchar_t));
VERIFY( is.rdstate() == ios_base::eofbit );
VERIFY( !traits_type::compare(buffer, L"j\0XXXXXXXX",
sizeof(buffer) / sizeof(wchar_t)) );
VERIFY( is.gcount() == 1 );
is.clear();
traits_type::assign(buffer, sizeof(buffer) / sizeof(wchar_t), L'X');
is.getline(buffer, sizeof(buffer) / sizeof(wchar_t));
VERIFY( is.rdstate() == (ios_base::eofbit | ios_base::failbit) );
VERIFY( !traits_type::compare(buffer, L"\0XXXXXXXXX",
sizeof(buffer) / sizeof(wchar_t)) );
VERIFY( is.gcount() == 0 );
}
int main()
{
test01();
return 0;
}
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