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122 lines
2.8 KiB
C++
122 lines
2.8 KiB
C++
// 1999-10-11 bkoz
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// Copyright (C) 1999-2014 Free Software Foundation, Inc.
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 3, or (at your option)
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// any later version.
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License along
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// with this library; see the file COPYING3. If not see
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// <http://www.gnu.org/licenses/>.
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// 27.5.2 template class basic_streambuf
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#include <streambuf>
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#include <cstring>
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#include <testsuite_hooks.h>
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class testbuf : public std::streambuf
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{
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public:
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// Typedefs:
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typedef std::streambuf::traits_type traits_type;
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typedef std::streambuf::char_type char_type;
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testbuf(): std::streambuf()
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{ }
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bool
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check_pointers()
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{
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bool test __attribute__((unused)) = true;
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VERIFY( !this->eback() );
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VERIFY( !this->gptr() );
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VERIFY( !this->egptr() );
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VERIFY( !this->pbase() );
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VERIFY( !this->pptr() );
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VERIFY( !this->epptr() );
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return test;
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}
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int_type
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pub_uflow()
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{ return (this->uflow()); }
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int_type
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pub_overflow(int_type __c = traits_type::eof())
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{ return (this->overflow(__c)); }
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int_type
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pub_pbackfail(int_type __c)
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{ return (this->pbackfail(__c)); }
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void
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pub_setg(char* beg, char* cur, char *end)
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{ this->setg(beg, cur, end); }
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void
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pub_setp(char* beg, char* end)
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{ this->setp(beg, end); }
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protected:
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int_type
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underflow()
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{
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int_type __retval = traits_type::eof();
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if (this->gptr() < this->egptr())
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__retval = traits_type::not_eof(0);
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return __retval;
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}
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};
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void test02()
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{
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typedef testbuf::traits_type traits_type;
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typedef testbuf::int_type int_type;
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bool test __attribute__((unused)) = true;
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char lit01[] = "chicago underground trio/possible cube on delmark";
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size_t i01 = traits_type::length(lit01);
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testbuf buf01;
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// 27.5.2.1 basic_streambuf ctors
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// default ctor initializes
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// - all pointer members to null pointers
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// - locale to current global locale
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VERIFY( buf01.check_pointers() );
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VERIFY( buf01.getloc() == std::locale() );
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// 27.5.2.2.5 Put area
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char carray01[i01];
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std::memset(carray01, 0, i01);
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buf01.pub_setg(lit01, lit01, lit01 + i01);
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buf01.sgetn(carray01, 0);
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VERIFY( carray01[0] == 0 );
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buf01.sgetn(carray01, 1);
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VERIFY( carray01[0] == 'c' );
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buf01.sgetn(carray01 + 1, i01 - 1);
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VERIFY( carray01[0] == 'c' );
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VERIFY( carray01[1] == 'h' );
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VERIFY( carray01[i01 - 1] == 'k' );
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}
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int main()
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{
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test02();
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return 0;
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}
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