1 // 2003-02-06 Petur Runolfsson <peturr02@ru.is>
3 // Copyright (C) 2003 Free Software Foundation
5 // This file is part of the GNU ISO C++ Library. This library is free
6 // software; you can redistribute it and/or modify it under the
7 // terms of the GNU General Public License as published by the
8 // Free Software Foundation; either version 2, or (at your option)
11 // This library is distributed in the hope that it will be useful,
12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 // GNU General Public License for more details.
16 // You should have received a copy of the GNU General Public License along
17 // with this library; see the file COPYING. If not, write to the Free
18 // Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
21 // 22.2.1.5 - Template class codecvt [lib.locale.codecvt]
24 #include <testsuite_hooks.h>
26 // Need to explicitly set the state(mbstate_t) to zero.
27 // How to do this is not specified by the ISO C99 standard, so we
28 // might need to add some operators to make the intuiative case
30 // w_codecvt::state_type state00;
32 // or, can use this explicit "C" initialization:
33 // w_codecvt::state_type state01 = {0, 0};
34 // .. except Ulrich says: Use memset. Always use memset. Feel the force...
36 zero_state(std::mbstate_t& state)
37 { std::memset(&state, 0, sizeof(std::mbstate_t)); }
39 bool length_called = false;
41 class length_codecvt : public std::codecvt<wchar_t, char, std::mbstate_t>
43 typedef std::codecvt<wchar_t, char, std::mbstate_t> w_codecvt;
46 // DR75: type of first argument of do_length is state_type&
47 virtual int do_length(state_type& state, const extern_type* from,
48 const extern_type* end, std::size_t max) const
51 return w_codecvt::do_length(state, from, end, max);
55 // Required instantiation
56 // codecvt<wchar_t, char, mbstate_t>
62 typedef codecvt<wchar_t, char, mbstate_t> w_codecvt;
63 typedef char ext_type;
65 bool test __attribute__((unused)) = true;
66 const ext_type* e_lit = "black pearl jasmine tea";
67 int size = strlen(e_lit);
70 loc = locale(loc, new length_codecvt);
71 const w_codecvt* cvt = &use_facet<w_codecvt>(loc);
73 w_codecvt::state_type state04;
75 length_called = false;
76 cvt->length(state04, e_lit, e_lit + size, 5);
77 VERIFY( length_called );