| // { dg-require-fileio "" } |
| |
| // Copyright (C) 2010-2014 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 <cwchar> |
| #include <cstring> |
| #include <testsuite_hooks.h> |
| |
| void test01() |
| { |
| using namespace std; |
| bool test __attribute__((unused)) = true; |
| |
| typedef wfilebuf::pos_type pos_type; |
| const char name[] = "tmp_seekoff-4.tst"; |
| |
| const size_t size = 12; |
| wchar_t buf[size]; |
| streamsize n; |
| |
| wfilebuf fb; |
| fb.open(name, ios_base::in | ios_base::out | ios_base::trunc); |
| |
| n = fb.sputn(L"abcd", 4); |
| VERIFY( n == 4 ); |
| |
| fb.pubseekoff(0, ios_base::beg); |
| n = fb.sgetn(buf, 3); |
| VERIFY( n == 3 ); |
| VERIFY( !wmemcmp(buf, L"abc", 3) ); |
| |
| // Check read => write without pubseekoff(0, ios_base::cur) |
| |
| n = fb.sputn(L"ef", 2); |
| VERIFY( n == 2 ); |
| |
| fb.pubseekoff(0, ios_base::beg); |
| |
| n = fb.sgetn(buf, size); |
| VERIFY( n == 5 ); |
| VERIFY( !wmemcmp(buf, L"abcef", 5) ); |
| |
| fb.pubseekoff(0, ios_base::beg); |
| n = fb.sputn(L"gh", 2); |
| VERIFY( n == 2 ); |
| |
| // Check write => read without pubseekoff(0, ios_base::cur) |
| |
| n = fb.sgetn( buf, 3 ); |
| VERIFY( !memcmp(buf, L"cef", 3) ); |
| |
| n = fb.sputn(L"ijkl", 4); |
| VERIFY( n == 4 ); |
| |
| fb.pubseekoff(0, ios_base::beg); |
| n = fb.sgetn(buf, 2); |
| VERIFY( n == 2 ); |
| VERIFY( !wmemcmp(buf, L"gh", 2) ); |
| |
| fb.pubseekoff(0, ios_base::end); |
| n = fb.sputn(L"mno", 3); |
| VERIFY( n == 3 ); |
| |
| fb.pubseekoff(0, ios_base::beg); |
| n = fb.sgetn(buf, size); |
| VERIFY( n == 12 ); |
| VERIFY( !wmemcmp(buf, L"ghcefijklmno", 12) ); |
| |
| fb.close(); |
| } |
| |
| int main() |
| { |
| test01(); |
| return 0; |
| } |