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a945c346 | 1 | // Copyright (C) 2017-2024 Free Software Foundation, Inc. |
e324f9cb FD |
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 | // { dg-require-fileio "" } | |
19 | ||
20 | #include <iterator> | |
21 | #include <fstream> | |
22 | #include <algorithm> | |
23 | ||
24 | #include <testsuite_hooks.h> | |
25 | ||
26 | void test01() | |
27 | { | |
28 | using namespace std; | |
29 | ||
30 | typedef istreambuf_iterator<char> in_iterator_type; | |
31 | ||
32 | unsigned found = 0; | |
33 | ||
34 | { | |
35 | ifstream fbuf("istream_unformatted-1.txt"); | |
36 | ||
37 | in_iterator_type beg(fbuf); | |
38 | in_iterator_type end; | |
39 | ||
40 | for (;;) | |
41 | { | |
42 | beg = find(beg, end, '1'); | |
43 | if (beg == end) | |
44 | break; | |
45 | ||
46 | ++found; | |
47 | VERIFY( *beg == '1' ); | |
48 | ||
49 | advance(beg, 9); | |
50 | VERIFY( *beg == '0' ); | |
51 | } | |
52 | } | |
53 | ||
54 | { | |
55 | ifstream fbuf("istream_unformatted-1.txt"); | |
56 | ||
57 | in_iterator_type beg(fbuf); | |
58 | in_iterator_type end; | |
59 | ||
60 | beg = find(beg, end, '1'); | |
61 | VERIFY( beg != end ); | |
62 | VERIFY( *beg == '1' ); | |
63 | ||
64 | advance(beg, 9); | |
65 | VERIFY( *beg == '0' ); | |
66 | ||
67 | unsigned line_length = 10; | |
68 | while (*++beg != '1') | |
69 | ++line_length; | |
70 | ||
71 | // Try to jump directly to the end through advance. | |
72 | advance(beg, (found - 2) * line_length + 9); | |
73 | VERIFY( *beg == '0' ); | |
74 | VERIFY( find(beg, end, '1') == end ); | |
75 | } | |
76 | } | |
77 | ||
78 | int main() | |
79 | { | |
80 | test01(); | |
81 | return 0; | |
82 | } |