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1 | // Copyright (C) 2004-2024 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 | ||
24 | void test01() | |
25 | { | |
26 | std::wstring str_01; | |
27 | const std::wstring str_02(L"coltrane playing 'softly as a morning sunrise'"); | |
28 | const std::wstring str_03(L"coltrane"); | |
29 | ||
30 | std::wstringbuf isbuf_01(std::ios_base::in); | |
31 | std::wstringbuf isbuf_02(str_02, std::ios_base::in); | |
32 | std::wistream is_01(0); | |
33 | std::wistream is_02(&isbuf_02); | |
34 | ||
35 | std::ios_base::iostate state1, state2, statefail; | |
36 | statefail = std::ios_base::failbit; | |
37 | ||
38 | // template<_CharT, _Traits> | |
39 | // basic_istream& operator>>(istream&, _CharT*) | |
40 | const int n = 20; | |
41 | wchar_t array1[n]; | |
42 | array1[0] = L'\0'; | |
43 | typedef std::wios::traits_type ctraits_type; | |
44 | ctraits_type::int_type i1, i2; | |
45 | ||
46 | state1 = is_01.rdstate(); | |
47 | i1 = ctraits_type::length(array1); | |
48 | is_01 >> array1; // should snake 0 characters, not alter stream state | |
49 | i2 = ctraits_type::length(array1); | |
50 | state2 = is_01.rdstate(); | |
51 | VERIFY( i1 == i2 ); | |
52 | VERIFY( state1 != state2 ); | |
53 | VERIFY( static_cast<bool>(state2 & statefail) ); | |
54 | ||
55 | state1 = is_02.rdstate(); | |
56 | is_02 >> array1; // should snake L"coltrane" | |
57 | state2 = is_02.rdstate(); | |
58 | VERIFY( state1 == state2 ); | |
59 | VERIFY( !static_cast<bool>(state2 & statefail) ); | |
60 | VERIFY( array1[str_03.size() - 1] == L'e' ); | |
61 | array1[str_03.size()] = L'\0'; | |
62 | VERIFY( !str_03.compare(0, str_03.size(), array1) ); | |
63 | std::wistream::int_type int1 = is_02.peek(); // should be L' ' | |
64 | VERIFY( int1 == L' ' ); | |
65 | ||
66 | state1 = is_02.rdstate(); | |
67 | is_02 >> array1; // should snake L"playing" as sentry "eats" ws | |
68 | state2 = is_02.rdstate(); | |
69 | int1 = is_02.peek(); // should be L' ' | |
70 | VERIFY( int1 == L' ' ); | |
71 | VERIFY( state1 == state2 ); | |
72 | VERIFY( !static_cast<bool>(state2 & statefail) ); | |
73 | } | |
74 | ||
75 | int main() | |
76 | { | |
77 | test01(); | |
78 | return 0; | |
79 | } |