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7adcbafe | 1 | // Copyright (C) 2004-2022 Free Software Foundation, Inc. |
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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 | |
748086b7 | 6 | // Free Software Foundation; either version 3, or (at your option) |
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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 | |
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15 | // with this library; see the file COPYING3. If not see |
16 | // <http://www.gnu.org/licenses/>. | |
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17 | |
18 | // 27.6.1.3 unformatted input functions | |
19 | ||
5a0727d9 | 20 | // { dg-options "-DMAX_LENGTH=7" { target simulator } } |
6cec3c81 | 21 | // { dg-require-fileio "" } |
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22 | |
23 | #ifndef MAX_LENGTH | |
24 | #define MAX_LENGTH 777 | |
25 | #endif | |
26 | ||
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27 | #include <istream> |
28 | #include <string> | |
29 | #include <fstream> | |
debac9f4 | 30 | #include <cstdlib> |
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31 | #include <testsuite_hooks.h> |
32 | ||
33 | using namespace std; | |
34 | ||
35 | wstring | |
36 | prepare(wstring::size_type len, unsigned nchunks, wchar_t delim) | |
37 | { | |
38 | wstring ret; | |
39 | for (unsigned i = 0; i < nchunks; ++i) | |
40 | { | |
41 | for (wstring::size_type j = 0; j < len; ++j) | |
42 | ret.push_back(L'a' + rand() % 26); | |
43 | len *= 2; | |
44 | ret.push_back(delim); | |
45 | } | |
46 | return ret; | |
47 | } | |
48 | ||
49 | void | |
50 | check(wistream& stream, const wstring& str, unsigned nchunks, wchar_t delim) | |
51 | { | |
a47add83 | 52 | static wchar_t buf[1000000]; |
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53 | wstring::size_type index = 0, index_new = 0; |
54 | unsigned n = 0; | |
55 | ||
56 | while (stream.getline(buf, sizeof(buf) / sizeof(wchar_t), delim)) | |
57 | { | |
58 | index_new = str.find(delim, index); | |
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59 | VERIFY( static_cast<string::size_type>(stream.gcount()) == |
60 | index_new - index + 1 ); | |
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61 | VERIFY( !str.compare(index, index_new - index, buf) ); |
62 | index = index_new + 1; | |
63 | ++n; | |
64 | } | |
65 | VERIFY( stream.gcount() == 0 ); | |
66 | VERIFY( stream.eof() ); | |
67 | VERIFY( n == nchunks ); | |
68 | } | |
69 | ||
70 | void test01() | |
71 | { | |
72 | const char filename[] = "wistream_getline.txt"; | |
73 | ||
74 | const wchar_t delim = L'|'; | |
75 | const unsigned nchunks = 10; | |
5a0727d9 | 76 | const wstring data = prepare(MAX_LENGTH, nchunks, delim); |
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77 | |
78 | wofstream ofstrm; | |
79 | ofstrm.open(filename); | |
80 | ofstrm.write(data.data(), data.size()); | |
81 | ofstrm.close(); | |
82 | ||
83 | wifstream ifstrm; | |
84 | ifstrm.open(filename); | |
85 | check(ifstrm, data, nchunks, delim); | |
86 | ifstrm.close(); | |
87 | } | |
88 | ||
89 | int main() | |
90 | { | |
91 | test01(); | |
92 | return 0; | |
93 | } |