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// 1999-10-11 bkoz
// Copyright (C) 1999-2022 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/>.
// 27.5.2 template class basic_streambuf
#include <streambuf>
#include <cwchar>
#include <cstring>
#include <testsuite_hooks.h>
class testbuf : public std::wstreambuf
{
public:
// Typedefs:
typedef std::wstreambuf::traits_type traits_type;
typedef std::wstreambuf::char_type char_type;
testbuf(): std::wstreambuf()
{ }
void
check_pointers()
{
VERIFY( !this->eback() );
VERIFY( !this->gptr() );
VERIFY( !this->egptr() );
VERIFY( !this->pbase() );
VERIFY( !this->pptr() );
VERIFY( !this->epptr() );
}
int_type
pub_uflow()
{ return (this->uflow()); }
int_type
pub_overflow(int_type __c = traits_type::eof())
{ return (this->overflow(__c)); }
int_type
pub_pbackfail(int_type __c)
{ return (this->pbackfail(__c)); }
void
pub_setg(wchar_t* beg, wchar_t* cur, wchar_t* end)
{ this->setg(beg, cur, end); }
void
pub_setp(wchar_t* beg, wchar_t* end)
{ this->setp(beg, end); }
protected:
int_type
underflow()
{
int_type __retval = traits_type::eof();
if (this->gptr() < this->egptr())
__retval = traits_type::not_eof(0);
return __retval;
}
};
void test01()
{
typedef testbuf::traits_type traits_type;
typedef testbuf::int_type int_type;
testbuf buf01;
// sputn/xsputn
wchar_t lit02[] = L"isotope 217: the unstable molecule on thrill jockey";
const int i02 = std::wcslen(lit02);
wchar_t carray[i02 + 1];
std::wmemset(carray, 0, i02 + 1);
buf01.pub_setp(carray, (carray + i02));
buf01.sputn(lit02, 0);
VERIFY( carray[0] == 0 );
VERIFY( lit02[0] == L'i' );
buf01.sputn(lit02, 1);
VERIFY( lit02[0] == carray[0] );
VERIFY( lit02[1] == L's' );
VERIFY( carray[1] == 0 );
buf01.sputn(lit02 + 1, 10);
VERIFY( std::memcmp(lit02, carray, 10) == 0 );
buf01.sputn(lit02 + 11, 20);
VERIFY( std::memcmp(lit02, carray, 30) == 0 );
}
int main()
{
test01();
return 0;
}