| // 2000-06-29 bkoz |
| |
| // Copyright (C) 2000, 2001, 2002, 2003, 2004 Free Software Foundation |
| // |
| // This file is part of the GNU ISO C++ Library. This library is free |
| // software; you can redistribute it and/or modify it under the |
| // terms of the GNU General Public License as published by the |
| // Free Software Foundation; either version 2, or (at your option) |
| // any later version. |
| |
| // This library is distributed in the hope that it will be useful, |
| // but WITHOUT ANY WARRANTY; without even the implied warranty of |
| // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| // GNU General Public License for more details. |
| |
| // You should have received a copy of the GNU General Public License along |
| // with this library; see the file COPYING. If not, write to the Free |
| // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, |
| // USA. |
| |
| // 27.6.2.4 basic_ostream seek members [lib.ostream.seeks] |
| // @require@ %-*.tst %-*.txt |
| // @diff@ %-*.tst %-*.txt |
| |
| #include <ostream> |
| #include <istream> |
| #include <fstream> |
| #include <testsuite_hooks.h> |
| |
| const char* s = " lootpack, peanut butter wolf, rob swift, madlib, quasimoto"; |
| const int times = 10; |
| |
| void write_rewind(std::iostream& stream) |
| { |
| bool test __attribute__((unused)) = true; |
| |
| for (int j = 0; j < times; j++) |
| { |
| std::streampos begin = stream.tellp(); |
| |
| for (int i = 0; i < times; ++i) |
| stream << j << '-' << i << s << '\n'; |
| |
| stream.seekp(begin); |
| } |
| VERIFY( stream.good() ); |
| } |
| |
| void check_contents(std::iostream& stream) |
| { |
| bool test __attribute__((unused)) = true; |
| |
| stream.clear(); |
| stream.seekg(0, std::ios::beg); |
| int i = 0; |
| int loop = times * times + 2; |
| while (i < loop) |
| { |
| stream.ignore(80, '\n'); |
| if (stream.good()) |
| ++i; |
| else |
| break; |
| } |
| VERIFY( i == times ); |
| } |
| |
| // fstream |
| // libstdc++/2346 |
| void test02() |
| { |
| std::fstream ofstrm; |
| ofstrm.open("istream_seeks-3.txt", std::ios::out); |
| if (!ofstrm) |
| std::abort(); |
| write_rewind(ofstrm); |
| ofstrm.close(); |
| |
| std::fstream ifstrm; |
| ifstrm.open("istream_seeks-3.txt", std::ios::in); |
| check_contents(ifstrm); |
| ifstrm.close(); |
| } |
| |
| int main() |
| { |
| test02(); |
| return 0; |
| } |