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83ffe9cd | 1 | // Copyright (C) 2004-2023 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 | // 21.3.7.9 inserters and extractors | |
19 | ||
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20 | // { dg-require-fileio "" } |
21 | ||
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22 | #include <istream> |
23 | #include <string> | |
24 | #include <fstream> | |
debac9f4 | 25 | #include <cstdlib> |
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26 | #include <testsuite_hooks.h> |
27 | ||
28 | using namespace std; | |
29 | ||
30 | string prepare(string::size_type len, unsigned nchunks, char delim) | |
31 | { | |
32 | string ret; | |
33 | for (unsigned i = 0; i < nchunks; ++i) | |
34 | { | |
35 | for (string::size_type j = 0; j < len; ++j) | |
36 | ret.push_back('a' + rand() % 26); | |
37 | len *= 2; | |
38 | ret.push_back(delim); | |
39 | } | |
40 | return ret; | |
41 | } | |
42 | ||
b1c5b5a0 | 43 | void check(istream& stream, const string& str, unsigned nchunks, char delim) |
c26fa757 | 44 | { |
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45 | string chunk; |
46 | string::size_type index = 0, index_new = 0; | |
b1c5b5a0 | 47 | unsigned n = 0; |
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48 | |
49 | while (getline(stream, chunk, delim)) | |
50 | { | |
51 | index_new = str.find(delim, index); | |
52 | VERIFY( !str.compare(index, index_new - index, chunk) ); | |
53 | index = index_new + 1; | |
b1c5b5a0 | 54 | ++n; |
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55 | } |
56 | VERIFY( stream.eof() ); | |
b1c5b5a0 | 57 | VERIFY( n == nchunks ); |
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58 | } |
59 | ||
60 | // istream& getline(istream&, string&, char) | |
61 | void test01() | |
62 | { | |
63 | const char filename[] = "inserters_extractors-2.txt"; | |
64 | ||
65 | const char delim = '|'; | |
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66 | const unsigned nchunks = 10; |
67 | const string data = prepare(777, nchunks, delim); | |
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68 | |
69 | ofstream ofstrm; | |
70 | ofstrm.open(filename); | |
71 | ofstrm.write(data.data(), data.size()); | |
72 | ofstrm.close(); | |
73 | ||
74 | ifstream ifstrm; | |
75 | ifstrm.open(filename); | |
b1c5b5a0 | 76 | check(ifstrm, data, nchunks, delim); |
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77 | ifstrm.close(); |
78 | } | |
79 | ||
80 | int main() | |
81 | { | |
82 | test01(); | |
83 | return 0; | |
84 | } |