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gcc.gnu.org Git - gcc.git/blob - libstdc++-v3/testsuite/27_io/basic_istream/getline/wchar_t/5.cc
1 // Copyright (C) 2004-2024 Free Software Foundation, Inc.
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)
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.
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/>.
18 // 27.6.1.3 unformatted input functions
20 // { dg-options "-DMAX_LENGTH=7" { target simulator } }
21 // { dg-require-fileio "" }
24 #define MAX_LENGTH 777
31 #include <testsuite_hooks.h>
36 prepare(wstring::size_type len
, unsigned nchunks
, wchar_t delim
)
39 for (unsigned i
= 0; i
< nchunks
; ++i
)
41 for (wstring::size_type j
= 0; j
< len
; ++j
)
42 ret
.push_back(L
'a' + rand() % 26);
50 check(wistream
& stream
, const wstring
& str
, unsigned nchunks
, wchar_t delim
)
52 static wchar_t buf
[1000000];
53 wstring::size_type index
= 0, index_new
= 0;
56 while (stream
.getline(buf
, sizeof(buf
) / sizeof(wchar_t), delim
))
58 index_new
= str
.find(delim
, index
);
59 VERIFY( static_cast<string::size_type
>(stream
.gcount()) ==
60 index_new
- index
+ 1 );
61 VERIFY( !str
.compare(index
, index_new
- index
, buf
) );
62 index
= index_new
+ 1;
65 VERIFY( stream
.gcount() == 0 );
66 VERIFY( stream
.eof() );
67 VERIFY( n
== nchunks
);
72 const char filename
[] = "wistream_getline.txt";
74 const wchar_t delim
= L
'|';
75 const unsigned nchunks
= 10;
76 const wstring data
= prepare(MAX_LENGTH
, nchunks
, delim
);
79 ofstrm
.open(filename
);
80 ofstrm
.write(data
.data(), data
.size());
84 ifstrm
.open(filename
);
85 check(ifstrm
, data
, nchunks
, delim
);
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