1// 2003-05-03 Petur Runolfsson <peturr02@ru.is> 2 3// Copyright (C) 2003-2015 Free Software Foundation, Inc. 4// 5// This file is part of the GNU ISO C++ Library. This library is free 6// software; you can redistribute it and/or modify it under the 7// terms of the GNU General Public License as published by the 8// Free Software Foundation; either version 3, or (at your option) 9// any later version. 10 11// This library is distributed in the hope that it will be useful, 12// but WITHOUT ANY WARRANTY; without even the implied warranty of 13// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14// GNU General Public License for more details. 15 16// You should have received a copy of the GNU General Public License along 17// with this library; see the file COPYING3. If not see 18// <http://www.gnu.org/licenses/>. 19 20// 27.8.1.4 Overridden virtual functions 21 22#include <fstream> 23#include <locale> 24#include <string> 25#include <testsuite_hooks.h> 26 27// Check that basic_filebuf::underflow() handles 28// codecvt::always_noconv() == false and codecvt::in() == noconv. 29class NoconvCvt : public std::codecvt<char, char, std::mbstate_t> 30{ 31protected: 32 virtual bool 33 do_always_noconv() const throw() 34 { return false; } 35 36 virtual result 37 do_in(state_type&, const char* from, const char*, const char*& from_next, 38 char* to, char*, char*& to_next) 39 { 40 from_next = from; 41 to_next = to; 42 return noconv; 43 } 44}; 45 46void test01() 47{ 48 using namespace std; 49 bool test __attribute__((unused)) = true; 50 const char* name = "filebuf_virtuals-1.txt"; 51 52 string str; 53 filebuf fb; 54 filebuf::int_type c1; 55 56 if (fb.open(name, ios_base::in)) 57 { 58 while ((c1 = fb.sbumpc()) != EOF) 59 str.push_back(filebuf::traits_type::to_char_type(c1)); 60 fb.close(); 61 } 62 63 locale loc(locale::classic(), new NoconvCvt); 64 fb.pubimbue(loc); 65 66 if (fb.open(name, ios_base::in)) 67 { 68 for (string::iterator i = str.begin(); i != str.end(); ++i) 69 { 70 c1 = fb.sbumpc(); 71 VERIFY( c1 != filebuf::traits_type::eof() ); 72 VERIFY( c1 == filebuf::traits_type::to_int_type(*i) ); 73 } 74 VERIFY( fb.sgetc() == filebuf::traits_type::eof() ); 75 fb.close(); 76 } 77} 78 79int main() 80{ 81 test01(); 82 return 0; 83} 84