1// Copyright (C) 2004-2015 Free Software Foundation, Inc. 2// 3// This file is part of the GNU ISO C++ Library. This library is free 4// software; you can redistribute it and/or modify it under the 5// terms of the GNU General Public License as published by the 6// Free Software Foundation; either version 3, or (at your option) 7// any later version. 8 9// This library is distributed in the hope that it will be useful, 10// but WITHOUT ANY WARRANTY; without even the implied warranty of 11// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12// GNU General Public License for more details. 13 14// You should have received a copy of the GNU General Public License along 15// with this library; see the file COPYING3. If not see 16// <http://www.gnu.org/licenses/>. 17 18// 27.6.1.2.3 character extractors 19 20#include <istream> 21#include <sstream> 22#include <testsuite_hooks.h> 23 24void test01() 25{ 26 bool test __attribute__((unused)) = true; 27 std::wstring str_01; 28 const std::wstring str_02(L"coltrane playing 'softly as a morning sunrise'"); 29 const std::wstring str_03(L"coltrane"); 30 31 std::wstringbuf isbuf_01(std::ios_base::in); 32 std::wstringbuf isbuf_02(str_02, std::ios_base::in); 33 std::wistream is_01(0); 34 std::wistream is_02(&isbuf_02); 35 36 std::ios_base::iostate state1, state2, statefail; 37 statefail = std::ios_base::failbit; 38 39 // template<_CharT, _Traits> 40 // basic_istream& operator>>(istream&, _CharT*) 41 const int n = 20; 42 wchar_t array1[n]; 43 array1[0] = L'\0'; 44 typedef std::wios::traits_type ctraits_type; 45 ctraits_type::int_type i1, i2; 46 47 state1 = is_01.rdstate(); 48 i1 = ctraits_type::length(array1); 49 is_01 >> array1; // should snake 0 characters, not alter stream state 50 i2 = ctraits_type::length(array1); 51 state2 = is_01.rdstate(); 52 VERIFY( i1 == i2 ); 53 VERIFY( state1 != state2 ); 54 VERIFY( static_cast<bool>(state2 & statefail) ); 55 56 state1 = is_02.rdstate(); 57 is_02 >> array1; // should snake L"coltrane" 58 state2 = is_02.rdstate(); 59 VERIFY( state1 == state2 ); 60 VERIFY( !static_cast<bool>(state2 & statefail) ); 61 VERIFY( array1[str_03.size() - 1] == L'e' ); 62 array1[str_03.size()] = L'\0'; 63 VERIFY( !str_03.compare(0, str_03.size(), array1) ); 64 std::wistream::int_type int1 = is_02.peek(); // should be L' ' 65 VERIFY( int1 == L' ' ); 66 67 state1 = is_02.rdstate(); 68 is_02 >> array1; // should snake L"playing" as sentry "eats" ws 69 state2 = is_02.rdstate(); 70 int1 = is_02.peek(); // should be L' ' 71 VERIFY( int1 == L' ' ); 72 VERIFY( state1 == state2 ); 73 VERIFY( !static_cast<bool>(state2 & statefail) ); 74} 75 76int main() 77{ 78 test01(); 79 return 0; 80} 81