1// Copyright (C) 2004 Free Software Foundation 2// 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 2, or (at your option) 7// any later version. 8 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. 13 14// You should have received a copy of the GNU General Public License along 15// with this library; see the file COPYING. If not, write to the Free 16// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 17// USA. 18 19// 27.6.1.3 unformatted input functions 20 21#include <istream> 22#include <string> 23#include <fstream> 24#include <limits> 25#include <testsuite_hooks.h> 26 27using namespace std; 28 29wstring 30prepare(wstring::size_type len, unsigned nchunks, wchar_t delim) 31{ 32 wstring ret; 33 for (unsigned i = 0; i < nchunks; ++i) 34 { 35 for (wstring::size_type j = 0; j < len; ++j) 36 ret.push_back(L'a' + rand() % 26); 37 len *= 2; 38 ret.push_back(delim); 39 } 40 return ret; 41} 42 43void 44check(wistream& stream, const wstring& str, unsigned nchunks, wchar_t delim) 45{ 46 bool test __attribute__((unused)) = true; 47 48 wstring::size_type index = 0, index_new = 0; 49 unsigned n = 0; 50 51 while (stream.ignore(numeric_limits<streamsize>::max(), delim).good()) 52 { 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; 57 ++n; 58 } 59 VERIFY( stream.gcount() == 0 ); 60 VERIFY( !stream.fail() ); 61 VERIFY( n == nchunks ); 62} 63 64void test01() 65{ 66 const char filename[] = "wistream_ignore.txt"; 67 68 const wchar_t delim = L'|'; 69 const unsigned nchunks = 10; 70 const wstring data = prepare(555, nchunks, delim); 71 72 wofstream ofstrm; 73 ofstrm.open(filename); 74 ofstrm.write(data.data(), data.size()); 75 ofstrm.close(); 76 77 wifstream ifstrm; 78 ifstrm.open(filename); 79 check(ifstrm, data, nchunks, delim); 80 ifstrm.close(); 81} 82 83int main() 84{ 85 test01(); 86 return 0; 87} 88