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git.ipfire.org Git - thirdparty/gcc.git/blob - libstdc++-v3/testsuite/27_io/basic_istream/ignore/char/2.cc
1 // Copyright (C) 2004-2016 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-require-fileio "" }
27 #include <testsuite_hooks.h>
31 string
prepare(string::size_type len
, unsigned nchunks
, char delim
)
34 for (unsigned i
= 0; i
< nchunks
; ++i
)
36 for (string::size_type j
= 0; j
< len
; ++j
)
37 ret
.push_back('a' + rand() % 26);
44 void check(istream
& stream
, const string
& str
, unsigned nchunks
, char delim
)
46 bool test
__attribute__((unused
)) = true;
48 string::size_type index
= 0, index_new
= 0;
51 while (stream
.ignore(numeric_limits
<streamsize
>::max(), delim
).good())
53 index_new
= str
.find(delim
, index
);
54 VERIFY( static_cast<string::size_type
>(stream
.gcount()) ==
55 index_new
- index
+ 1 );
56 index
= index_new
+ 1;
59 VERIFY( stream
.gcount() == 0 );
60 VERIFY( !stream
.fail() );
61 VERIFY( n
== nchunks
);
66 const char filename
[] = "istream_ignore.txt";
68 const char delim
= '|';
69 const unsigned nchunks
= 10;
70 const string data
= prepare(555, nchunks
, delim
);
73 ofstrm
.open(filename
);
74 ofstrm
.write(data
.data(), data
.size());
78 ifstrm
.open(filename
);
79 check(ifstrm
, data
, nchunks
, delim
);