| // 1999-07-28 bkoz |
| |
| // Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006 |
| // Free Software Foundation |
| // |
| // 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 2, 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 COPYING. If not, write to the Free |
| // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, |
| // USA. |
| |
| // 27.6.1.2.3 basic_istream::operator>> |
| |
| #include <istream> |
| #include <sstream> |
| #include <testsuite_hooks.h> |
| |
| // stringbufs. |
| void test01() |
| { |
| typedef std::ios::traits_type ctraits_type; |
| |
| bool test __attribute__((unused)) = true; |
| const std::string str_01; |
| const std::string str_02("art taylor kickin it on DAKAR"); |
| std::string strtmp; |
| |
| std::stringbuf isbuf_00(std::ios_base::in); |
| std::stringbuf isbuf_01(std::ios_base::in | std::ios_base::out); |
| std::stringbuf isbuf_02(str_01, std::ios_base::in); |
| std::stringbuf isbuf_03(str_01, std::ios_base::in | std::ios_base::out); |
| std::stringbuf isbuf_04(str_02, std::ios_base::in); |
| std::stringbuf isbuf_05(str_02, std::ios_base::in | std::ios_base::out); |
| |
| std::istream is_00(NULL); |
| std::istream is_01(&isbuf_01); |
| std::istream is_02(&isbuf_02); |
| std::istream is_03(&isbuf_03); |
| std::istream is_04(&isbuf_04); |
| std::istream is_05(&isbuf_05); |
| std::ios_base::iostate state1, state2, statefail, stateeof; |
| statefail = std::ios_base::failbit; |
| stateeof = std::ios_base::eofbit; |
| |
| |
| // template<_CharT, _Traits> |
| // basic_istream& operator>>(basic_streambuf*) |
| |
| // null istream to empty in_buf |
| state1 = is_00.rdstate(); |
| is_00 >> &isbuf_00; |
| state2 = is_00.rdstate(); |
| VERIFY( state1 != state2 ); |
| VERIFY( static_cast<bool>(state2 & statefail) ); |
| VERIFY( isbuf_00.str() == str_01 ); |
| |
| // null istream to empty in_out_buf |
| is_00.clear(std::ios_base::goodbit); |
| state1 = is_00.rdstate(); |
| is_00 >> &isbuf_01; |
| state2 = is_00.rdstate(); |
| VERIFY( state1 != state2 ); |
| VERIFY( static_cast<bool>(state2 & statefail) ); |
| VERIFY( isbuf_01.str() == str_01 ); |
| |
| // null istream to full in_buf |
| is_00.clear(std::ios_base::goodbit); |
| state1 = is_00.rdstate(); |
| is_00 >> &isbuf_04; |
| state2 = is_00.rdstate(); |
| VERIFY( state1 != state2 ); |
| VERIFY( static_cast<bool>(state2 & statefail) ); |
| VERIFY( isbuf_04.str() == str_02 ); |
| |
| // null istream to full in_out_buf |
| is_00.clear(std::ios_base::goodbit); |
| state1 = is_00.rdstate(); |
| is_00 >> &isbuf_05; |
| state2 = is_00.rdstate(); |
| VERIFY( state1 != state2 ); |
| VERIFY( static_cast<bool>(state2 & statefail) ); |
| VERIFY( isbuf_05.str() == str_02 ); |
| |
| // empty but non-null istream to full in_buf |
| state1 = is_02.rdstate(); |
| is_02 >> &isbuf_04; |
| state2 = is_02.rdstate(); |
| VERIFY( state1 != state2 ); |
| VERIFY( static_cast<bool>(state2 & statefail) ); |
| VERIFY( isbuf_04.str() == str_02 ); // as only an "in" buffer |
| VERIFY( isbuf_04.sgetc() == 'a' ); |
| |
| // empty but non-null istream to full in_out_buf |
| is_02.clear(std::ios_base::goodbit); |
| state1 = is_02.rdstate(); |
| is_02 >> &isbuf_05; |
| state2 = is_02.rdstate(); |
| VERIFY( state1 != state2 ); |
| VERIFY( static_cast<bool>(state2 & statefail) ); |
| VERIFY( isbuf_05.str() == str_02 ); // as only an "in" buffer |
| VERIFY( isbuf_05.sgetc() == 'a' ); |
| |
| // full istream to empty in_buf (need out_buf, you know?) |
| state1 = is_04.rdstate(); |
| is_04 >> &isbuf_02; |
| state2 = is_04.rdstate(); |
| VERIFY( state1 != state2 ); |
| VERIFY( static_cast<bool>(state2 & statefail) ); |
| VERIFY( isbuf_02.str() == str_01 ); // as only an "in" buffer |
| VERIFY( isbuf_02.sgetc() == ctraits_type::eof() ); |
| VERIFY( is_04.peek() == ctraits_type::eof() ); // as failed |
| |
| // full istream to empty in_out_buf |
| is_04.clear(std::ios_base::goodbit); |
| state1 = is_04.rdstate(); |
| is_04 >> &isbuf_03; |
| state2 = is_04.rdstate(); |
| VERIFY( state1 != state2 ); |
| VERIFY( !static_cast<bool>(state2 & statefail) ); |
| VERIFY( state2 == stateeof ); |
| strtmp = isbuf_03.str(); |
| VERIFY( strtmp == str_02 ); // as only an "in" buffer |
| VERIFY( isbuf_03.sgetc() == 'a' ); |
| VERIFY( is_04.peek() == ctraits_type::eof() ); |
| } |
| |
| int main() |
| { |
| test01(); |
| return 0; |
| } |