| // Copyright (C) 2004, 2005 Free Software Foundation |
| // |
| // 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 2, 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 COPYING. If not, write to the Free |
| // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, |
| // USA. |
| |
| // 27.6.1.2.3 character extractors |
| |
| #include <istream> |
| #include <sstream> |
| #include <testsuite_hooks.h> |
| |
| void test01() |
| { |
| bool test __attribute__((unused)) = true; |
| std::wstring str_01; |
| const std::wstring str_02(L"coltrane playing 'softly as a morning sunrise'"); |
| const std::wstring str_03(L"coltrane"); |
| |
| std::wstringbuf isbuf_01(std::ios_base::in); |
| std::wstringbuf isbuf_02(str_02, std::ios_base::in); |
| std::wistream is_01(NULL); |
| std::wistream is_02(&isbuf_02); |
| |
| std::ios_base::iostate state1, state2, statefail; |
| statefail = std::ios_base::failbit; |
| |
| // template<_CharT, _Traits> |
| // basic_istream& operator>>(istream&, _CharT*) |
| const int n = 20; |
| wchar_t array1[n]; |
| array1[0] = L'\0'; |
| typedef std::wios::traits_type ctraits_type; |
| ctraits_type::int_type i1, i2; |
| |
| state1 = is_01.rdstate(); |
| i1 = ctraits_type::length(array1); |
| is_01 >> array1; // should snake 0 characters, not alter stream state |
| i2 = ctraits_type::length(array1); |
| state2 = is_01.rdstate(); |
| VERIFY( i1 == i2 ); |
| VERIFY( state1 != state2 ); |
| VERIFY( static_cast<bool>(state2 & statefail) ); |
| |
| state1 = is_02.rdstate(); |
| is_02 >> array1; // should snake L"coltrane" |
| state2 = is_02.rdstate(); |
| VERIFY( state1 == state2 ); |
| VERIFY( !static_cast<bool>(state2 & statefail) ); |
| VERIFY( array1[str_03.size() - 1] == L'e' ); |
| array1[str_03.size()] = L'\0'; |
| VERIFY( !str_03.compare(0, str_03.size(), array1) ); |
| std::wistream::int_type int1 = is_02.peek(); // should be L' ' |
| VERIFY( int1 == L' ' ); |
| |
| state1 = is_02.rdstate(); |
| is_02 >> array1; // should snake L"playing" as sentry "eats" ws |
| state2 = is_02.rdstate(); |
| int1 = is_02.peek(); // should be L' ' |
| VERIFY( int1 == L' ' ); |
| VERIFY( state1 == state2 ); |
| VERIFY( !static_cast<bool>(state2 & statefail) ); |
| } |
| |
| int main() |
| { |
| test01(); |
| return 0; |
| } |