| // Copyright (C) 2004, 2009 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 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/>. |
| |
| // 27.6.1.3 unformatted input functions |
| |
| #include <cwchar> // for wcslen |
| #include <istream> |
| #include <sstream> |
| #include <testsuite_hooks.h> |
| |
| // [patch] bits/istream.tcc - getline(char_type*,streamsize,char_type) |
| // http://gcc.gnu.org/ml/libstdc++/2000-07/msg00003.html |
| void |
| test05() |
| { |
| const wchar_t* charray = L"\n" |
| L"a\n" |
| L"aa\n" |
| L"aaa\n" |
| L"aaaa\n" |
| L"aaaaa\n" |
| L"aaaaaa\n" |
| L"aaaaaaa\n" |
| L"aaaaaaaa\n" |
| L"aaaaaaaaa\n" |
| L"aaaaaaaaaa\n" |
| L"aaaaaaaaaaa\n" |
| L"aaaaaaaaaaaa\n" |
| L"aaaaaaaaaaaaa\n" |
| L"aaaaaaaaaaaaaa\n"; |
| |
| bool test __attribute__((unused)) = true; |
| const std::streamsize it = 5; |
| std::streamsize br = 0; |
| wchar_t tmp[it]; |
| std::wstringbuf sb(charray, std::ios_base::in); |
| std::wistream ifs(&sb); |
| std::streamsize blen = std::wcslen(charray); |
| VERIFY(!(!ifs)); |
| while(ifs.getline(tmp, it) || ifs.gcount()) |
| { |
| br += ifs.gcount(); |
| if(ifs.eof()) |
| { |
| // Just sanity checks to make sure we've extracted the same |
| // number of chars that were in the streambuf |
| VERIFY( br == blen ); |
| // Also, we should only set the failbit if we could |
| // _extract_ no chars from the stream, i.e. the first read |
| // returned EOF. |
| VERIFY( ifs.fail() && ifs.gcount() == 0 ); |
| } |
| else if(ifs.fail()) |
| { |
| // delimiter not read |
| // |
| // either |
| // -> extracted no characters |
| // or |
| // -> n - 1 characters are stored |
| ifs.clear(ifs.rdstate() & ~std::ios::failbit); |
| VERIFY( (ifs.gcount() == 0) || (std::wcslen(tmp) == it - 1) ); |
| VERIFY( !(!ifs) ); |
| continue; |
| } |
| else |
| { |
| // delimiter was read. |
| // |
| // -> wcslen(__s) < n - 1 |
| // -> delimiter was seen -> gcount() > wcslen(__s) |
| VERIFY( ifs.gcount() == static_cast<std::streamsize>(std::wcslen(tmp) |
| + 1) ); |
| continue; |
| } |
| } |
| } |
| |
| int |
| main() |
| { |
| test05(); |
| return 0; |
| } |