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// 2003-05-03 Petur Runolfsson <peturr02@ru.is>
// Copyright (C) 2003-2019 Free Software Foundation, Inc.
//
// 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/>.
// 27.8.1.4 Overridden virtual functions
#include <fstream>
#include <locale>
#include <string>
#include <testsuite_hooks.h>
// Check that basic_filebuf::underflow() handles
// codecvt::always_noconv() == false and codecvt::in() == noconv.
class NoconvCvt : public std::codecvt<char, char, std::mbstate_t>
{
protected:
virtual bool
do_always_noconv() const throw()
{ return false; }
virtual result
do_in(state_type&, const char* from, const char*, const char*& from_next,
char* to, char*, char*& to_next)
{
from_next = from;
to_next = to;
return noconv;
}
};
void test01()
{
using namespace std;
const char* name = "filebuf_virtuals-1.txt";
string str;
filebuf fb;
filebuf::int_type c1;
if (fb.open(name, ios_base::in))
{
while ((c1 = fb.sbumpc()) != EOF)
str.push_back(filebuf::traits_type::to_char_type(c1));
fb.close();
}
locale loc(locale::classic(), new NoconvCvt);
fb.pubimbue(loc);
if (fb.open(name, ios_base::in))
{
for (string::iterator i = str.begin(); i != str.end(); ++i)
{
c1 = fb.sbumpc();
VERIFY( c1 != filebuf::traits_type::eof() );
VERIFY( c1 == filebuf::traits_type::to_int_type(*i) );
}
VERIFY( fb.sgetc() == filebuf::traits_type::eof() );
fb.close();
}
}
int main()
{
test01();
return 0;
}
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