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1 | // 1999-08-11 bkoz |
2 | ||
748086b7 | 3 | // Copyright (C) 1999, 2000, 2001, 2002, 2003, 2009 Free Software Foundation |
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4 | // |
5 | // This file is part of the GNU ISO C++ Library. This library is free | |
6 | // software; you can redistribute it and/or modify it under the | |
7 | // terms of the GNU General Public License as published by the | |
748086b7 | 8 | // Free Software Foundation; either version 3, or (at your option) |
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9 | // any later version. |
10 | ||
11 | // This library is distributed in the hope that it will be useful, | |
12 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | // GNU General Public License for more details. | |
15 | ||
16 | // You should have received a copy of the GNU General Public License along | |
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17 | // with this library; see the file COPYING3. If not see |
18 | // <http://www.gnu.org/licenses/>. | |
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19 | |
20 | // 27.6.1.3 unformatted input functions | |
23cac885 | 21 | |
b80115c4 | 22 | #include <cstring> // for strlen |
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23 | #include <istream> |
24 | #include <sstream> | |
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25 | #include <testsuite_hooks.h> |
26 | ||
27 | // [patch] bits/istream.tcc - getline(char_type*,streamsize,char_type) | |
28 | // http://gcc.gnu.org/ml/libstdc++/2000-07/msg00003.html | |
29 | void | |
30 | test05() | |
31 | { | |
32 | const char* charray = "\n" | |
33 | "a\n" | |
34 | "aa\n" | |
35 | "aaa\n" | |
36 | "aaaa\n" | |
37 | "aaaaa\n" | |
38 | "aaaaaa\n" | |
39 | "aaaaaaa\n" | |
40 | "aaaaaaaa\n" | |
41 | "aaaaaaaaa\n" | |
42 | "aaaaaaaaaa\n" | |
43 | "aaaaaaaaaaa\n" | |
44 | "aaaaaaaaaaaa\n" | |
45 | "aaaaaaaaaaaaa\n" | |
46 | "aaaaaaaaaaaaaa\n"; | |
47 | ||
11f10e6b | 48 | bool test __attribute__((unused)) = true; |
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49 | const std::streamsize it = 5; |
50 | std::streamsize br = 0; | |
51 | char tmp[it]; | |
52 | std::stringbuf sb(charray, std::ios_base::in); | |
53 | std::istream ifs(&sb); | |
54 | std::streamsize blen = std::strlen(charray); | |
55 | VERIFY(!(!ifs)); | |
56 | while(ifs.getline(tmp, it) || ifs.gcount()) | |
57 | { | |
58 | br += ifs.gcount(); | |
59 | if(ifs.eof()) | |
60 | { | |
61 | // Just sanity checks to make sure we've extracted the same | |
62 | // number of chars that were in the streambuf | |
63 | VERIFY(br == blen); | |
64 | // Also, we should only set the failbit if we could | |
65 | // _extract_ no chars from the stream, i.e. the first read | |
66 | // returned EOF. | |
67 | VERIFY(ifs.fail() && ifs.gcount() == 0); | |
68 | } | |
69 | else if(ifs.fail()) | |
70 | { | |
71 | // delimiter not read | |
72 | // | |
73 | // either | |
74 | // -> extracted no characters | |
75 | // or | |
76 | // -> n - 1 characters are stored | |
77 | ifs.clear(ifs.rdstate() & ~std::ios::failbit); | |
78 | VERIFY((ifs.gcount() == 0) || (std::strlen(tmp) == it - 1)); | |
79 | VERIFY(!(!ifs)); | |
80 | continue; | |
81 | } | |
82 | else | |
83 | { | |
84 | // delimiter was read. | |
85 | // | |
86 | // -> strlen(__s) < n - 1 | |
87 | // -> delimiter was seen -> gcount() > strlen(__s) | |
11f10e6b | 88 | VERIFY(ifs.gcount() == static_cast<std::streamsize>(std::strlen(tmp) + 1) ); |
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89 | continue; |
90 | } | |
91 | } | |
92 | } | |
93 | ||
94 | int | |
95 | main() | |
96 | { | |
97 | test05(); | |
98 | return 0; | |
99 | } |