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[/] [openrisc/] [trunk/] [gnu-src/] [gcc-4.5.1/] [libstdc++-v3/] [testsuite/] [27_io/] [basic_istream/] [ignore/] [char/] [2.cc] - Rev 424
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// Copyright (C) 2004, 2005, 2006, 2007, 2009 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 3, 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 COPYING3. If not see // <http://www.gnu.org/licenses/>. // 27.6.1.3 unformatted input functions // { dg-require-fileio "" } #include <istream> #include <string> #include <fstream> #include <limits> #include <cstdlib> #include <testsuite_hooks.h> using namespace std; string prepare(string::size_type len, unsigned nchunks, char delim) { string ret; for (unsigned i = 0; i < nchunks; ++i) { for (string::size_type j = 0; j < len; ++j) ret.push_back('a' + rand() % 26); len *= 2; ret.push_back(delim); } return ret; } void check(istream& stream, const string& str, unsigned nchunks, char delim) { bool test __attribute__((unused)) = true; string::size_type index = 0, index_new = 0; unsigned n = 0; while (stream.ignore(numeric_limits<streamsize>::max(), delim).good()) { index_new = str.find(delim, index); VERIFY( static_cast<string::size_type>(stream.gcount()) == index_new - index + 1 ); index = index_new + 1; ++n; } VERIFY( stream.gcount() == 0 ); VERIFY( !stream.fail() ); VERIFY( n == nchunks ); } void test01() { const char filename[] = "istream_ignore.txt"; const char delim = '|'; const unsigned nchunks = 10; const string data = prepare(555, nchunks, delim); ofstream ofstrm; ofstrm.open(filename); ofstrm.write(data.data(), data.size()); ofstrm.close(); ifstream ifstrm; ifstrm.open(filename); check(ifstrm, data, nchunks, delim); ifstrm.close(); } int main() { test01(); return 0; }