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 codecvt_base::result result; 47 typedef wchar_t int_type; 48 typedef char ext_type; 49 50 bool test __attribute__((unused)) = true; 51 const ext_type* e_lit = "black pearl jasmine tea"; 52 int size = strlen(e_lit); 53 ext_type* e_arr = new ext_type[size + 1]; 54 ext_type* eto_next; 55 56 locale loc; 57 const w_codecvt* cvt = &use_facet<w_codecvt>(loc); 58 59 // unshift 60 strcpy(e_arr, e_lit); 61 w_codecvt::state_type state03; 62 zero_state(state03); 63 result r3 = cvt->unshift(state03, e_arr, e_arr + size, eto_next); 64 VERIFY( r3 == codecvt_base::noconv ); 65 VERIFY( !strcmp(e_arr, e_lit) ); 66 VERIFY( eto_next == e_arr ); 67 68 delete [] e_arr; 69} 70 71int main () 72{ 73 test01(); 74 return 0; 75} 76