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