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