| // Copyright (C) 2004-2021 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 <cstring> // for strlen |
| #include <istream> |
| #include <testsuite_hooks.h> |
| |
| class Inbuf : public std::streambuf |
| { |
| static const char buf[]; |
| const char* current; |
| int size; |
| |
| public: |
| Inbuf() |
| { |
| current = buf; |
| size = std::strlen(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 char Inbuf::buf[] = "1234567890abcdefghij"; |
| |
| void test01() |
| { |
| using namespace std; |
| |
| typedef char_traits<char> traits_type; |
| |
| Inbuf inbuf1; |
| istream is(&inbuf1); |
| |
| char buffer[10]; |
| traits_type::assign(buffer, sizeof(buffer), 'X'); |
| |
| is.getline(buffer, sizeof(buffer), '0'); |
| VERIFY( is.rdstate() == ios_base::goodbit ); |
| VERIFY( !traits_type::compare(buffer, "123456789\0", sizeof(buffer)) ); |
| VERIFY( is.gcount() == 10 ); |
| |
| is.clear(); |
| traits_type::assign(buffer, sizeof(buffer), 'X'); |
| is.getline(buffer, sizeof(buffer)); |
| VERIFY( is.rdstate() == ios_base::failbit ); |
| VERIFY( !traits_type::compare(buffer, "abcdefghi\0", sizeof(buffer)) ); |
| VERIFY( is.gcount() == 9 ); |
| |
| is.clear(); |
| traits_type::assign(buffer, sizeof(buffer), 'X'); |
| is.getline(buffer, sizeof(buffer)); |
| VERIFY( is.rdstate() == ios_base::eofbit ); |
| VERIFY( !traits_type::compare(buffer, "j\0XXXXXXXX", sizeof(buffer)) ); |
| VERIFY( is.gcount() == 1 ); |
| |
| is.clear(); |
| traits_type::assign(buffer, sizeof(buffer), 'X'); |
| is.getline(buffer, sizeof(buffer)); |
| VERIFY( is.rdstate() == (ios_base::eofbit | ios_base::failbit) ); |
| VERIFY( !traits_type::compare(buffer, "\0XXXXXXXXX", sizeof(buffer)) ); |
| VERIFY( is.gcount() == 0 ); |
| } |
| |
| int main() |
| { |
| test01(); |
| return 0; |
| } |