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a5544970 | 1 | // Copyright (C) 2004-2019 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 | ||
20 | #include <cwchar> // for wcslen | |
21 | #include <istream> | |
22 | #include <sstream> | |
23 | #include <testsuite_hooks.h> | |
24 | ||
25 | // [patch] bits/istream.tcc - getline(char_type*,streamsize,char_type) | |
26 | // http://gcc.gnu.org/ml/libstdc++/2000-07/msg00003.html | |
27 | void | |
28 | test05() | |
29 | { | |
30 | const wchar_t* charray = L"\n" | |
31 | L"a\n" | |
32 | L"aa\n" | |
33 | L"aaa\n" | |
34 | L"aaaa\n" | |
35 | L"aaaaa\n" | |
36 | L"aaaaaa\n" | |
37 | L"aaaaaaa\n" | |
38 | L"aaaaaaaa\n" | |
39 | L"aaaaaaaaa\n" | |
40 | L"aaaaaaaaaa\n" | |
41 | L"aaaaaaaaaaa\n" | |
42 | L"aaaaaaaaaaaa\n" | |
43 | L"aaaaaaaaaaaaa\n" | |
44 | L"aaaaaaaaaaaaaa\n"; | |
45 | ||
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46 | const std::streamsize it = 5; |
47 | std::streamsize br = 0; | |
48 | wchar_t tmp[it]; | |
49 | std::wstringbuf sb(charray, std::ios_base::in); | |
50 | std::wistream ifs(&sb); | |
51 | std::streamsize blen = std::wcslen(charray); | |
52 | VERIFY(!(!ifs)); | |
53 | while(ifs.getline(tmp, it) || ifs.gcount()) | |
54 | { | |
55 | br += ifs.gcount(); | |
56 | if(ifs.eof()) | |
57 | { | |
58 | // Just sanity checks to make sure we've extracted the same | |
59 | // number of chars that were in the streambuf | |
60 | VERIFY( br == blen ); | |
61 | // Also, we should only set the failbit if we could | |
62 | // _extract_ no chars from the stream, i.e. the first read | |
63 | // returned EOF. | |
64 | VERIFY( ifs.fail() && ifs.gcount() == 0 ); | |
65 | } | |
66 | else if(ifs.fail()) | |
67 | { | |
68 | // delimiter not read | |
69 | // | |
70 | // either | |
71 | // -> extracted no characters | |
72 | // or | |
73 | // -> n - 1 characters are stored | |
74 | ifs.clear(ifs.rdstate() & ~std::ios::failbit); | |
75 | VERIFY( (ifs.gcount() == 0) || (std::wcslen(tmp) == it - 1) ); | |
76 | VERIFY( !(!ifs) ); | |
77 | continue; | |
78 | } | |
79 | else | |
80 | { | |
81 | // delimiter was read. | |
82 | // | |
83 | // -> wcslen(__s) < n - 1 | |
fcfbdb74 | 84 | // -> delimiter was seen -> gcount() > wcslen(__s) |
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85 | VERIFY( ifs.gcount() == static_cast<std::streamsize>(std::wcslen(tmp) |
86 | + 1) ); | |
87 | continue; | |
88 | } | |
89 | } | |
90 | } | |
91 | ||
92 | int | |
93 | main() | |
94 | { | |
95 | test05(); | |
96 | return 0; | |
97 | } |