1// 2000-08-17 Benjamin Kosnik <bkoz@cygnus.com> 2 3// Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2009 4// Free Software Foundation 5// 6// This file is part of the GNU ISO C++ Library. This library is free 7// software; you can redistribute it and/or modify it under the 8// terms of the GNU General Public License as published by the 9// Free Software Foundation; either version 3, or (at your option) 10// any later version. 11 12// This library is distributed in the hope that it will be useful, 13// but WITHOUT ANY WARRANTY; without even the implied warranty of 14// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15// GNU General Public License for more details. 16 17// You should have received a copy of the GNU General Public License along 18// with this library; see the file COPYING3. If not see 19// <http://www.gnu.org/licenses/>. 20 21// 22.2.1.5 - Template class codecvt [lib.locale.codecvt] 22 23#include <locale> 24#include <cstring> 25#include <testsuite_hooks.h> 26 27// Need to explicitly set the state(mbstate_t) to zero. 28// How to do this is not specified by the ISO C99 standard, so we 29// might need to add some operators to make the intuiative case 30// work: 31// w_codecvt::state_type state00; 32// state00 = 0; 33// or, can use this explicit "C" initialization: 34// w_codecvt::state_type state01 = {0, 0}; 35// .. except Ulrich says: Use memset. Always use memset. Feel the force... 36void 37zero_state(std::mbstate_t& state) 38{ std::memset(&state, 0, sizeof(std::mbstate_t)); } 39 40// Required instantiation 41// codecvt<wchar_t, char, mbstate_t> 42void test01() 43{ 44 using namespace std; 45 typedef codecvt<wchar_t, char, mbstate_t> w_codecvt; 46 typedef char ext_type; 47 48 bool test __attribute__((unused)) = true; 49 const ext_type* e_lit = "black pearl jasmine tea"; 50 int size = strlen(e_lit); 51 52 locale loc; 53 const w_codecvt* cvt = &use_facet<w_codecvt>(loc); 54 55 w_codecvt::state_type state04; 56 zero_state(state04); 57 int j = cvt->length(state04, e_lit, e_lit + size, 5); 58 VERIFY( j == 5 ); 59} 60 61int main () 62{ 63 test01(); 64 return 0; 65} 66