1// Copyright (C) 2004, 2005 Free Software Foundation 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 2, 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 COPYING. If not, write to the Free 16// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 17// USA. 18 19// 27.6.1.2.3 character extractors 20 21#include <istream> 22#include <sstream> 23#include <testsuite_hooks.h> 24 25void test01() 26{ 27 bool test __attribute__((unused)) = true; 28 std::wstring str_01; 29 const std::wstring str_02(L"coltrane playing 'softly as a morning sunrise'"); 30 const std::wstring str_03(L"coltrane"); 31 32 std::wstringbuf isbuf_01(std::ios_base::in); 33 std::wstringbuf isbuf_02(str_02, std::ios_base::in); 34 std::wistream is_01(NULL); 35 std::wistream is_02(&isbuf_02); 36 37 std::ios_base::iostate state1, state2, statefail; 38 statefail = std::ios_base::failbit; 39 40 // template<_CharT, _Traits> 41 // basic_istream& operator>>(istream&, _CharT*) 42 const int n = 20; 43 wchar_t array1[n]; 44 array1[0] = L'\0'; 45 typedef std::wios::traits_type ctraits_type; 46 ctraits_type::int_type i1, i2; 47 48 state1 = is_01.rdstate(); 49 i1 = ctraits_type::length(array1); 50 is_01 >> array1; // should snake 0 characters, not alter stream state 51 i2 = ctraits_type::length(array1); 52 state2 = is_01.rdstate(); 53 VERIFY( i1 == i2 ); 54 VERIFY( state1 != state2 ); 55 VERIFY( static_cast<bool>(state2 & statefail) ); 56 57 state1 = is_02.rdstate(); 58 is_02 >> array1; // should snake L"coltrane" 59 state2 = is_02.rdstate(); 60 VERIFY( state1 == state2 ); 61 VERIFY( !static_cast<bool>(state2 & statefail) ); 62 VERIFY( array1[str_03.size() - 1] == L'e' ); 63 array1[str_03.size()] = L'\0'; 64 VERIFY( !str_03.compare(0, str_03.size(), array1) ); 65 std::wistream::int_type int1 = is_02.peek(); // should be L' ' 66 VERIFY( int1 == L' ' ); 67 68 state1 = is_02.rdstate(); 69 is_02 >> array1; // should snake L"playing" as sentry "eats" ws 70 state2 = is_02.rdstate(); 71 int1 = is_02.peek(); // should be L' ' 72 VERIFY( int1 == L' ' ); 73 VERIFY( state1 == state2 ); 74 VERIFY( !static_cast<bool>(state2 & statefail) ); 75} 76 77int main() 78{ 79 test01(); 80 return 0; 81} 82