libstdc++-v3/testsuite/22_locale/codecvt/in/wchar_t/1.cc

   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...
  36 void
  37 zero_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>
  42 //
  43 // Baseline test for "C" locale
  44 void test01()
  45 {
  46   using namespace std;
  47   typedef codecvt<wchar_t, char, mbstate_t>     w_codecvt;
  48   typedef codecvt_base::result                  result;
  49   typedef wchar_t                               int_type;
  50   typedef char                                  ext_type;
  51   typedef char_traits<wchar_t>                  int_traits;
  52
  53   bool test __attribute__((unused)) = true;
  54   const ext_type*       e_lit = "black pearl jasmine tea";
  55   const ext_type*       efrom_next;
  56   const int_type*       i_lit = L"black pearl jasmine tea";
  57   size_t                size = strlen(e_lit);
  58   int_type*             i_arr = new int_type[size + 1];
  59   int_type*             i_ref = new int_type[size + 1];
  60   wmemset(i_arr, static_cast<wchar_t>(0xdeadbeef), size + 1);
  61   wmemset(i_ref, static_cast<wchar_t>(0xdeadbeef), size + 1);
  62   int_type*             ito_next;
  63
  64   locale                loc;
  65   const w_codecvt*      cvt = &use_facet<w_codecvt>(loc);
  66
  67   // in
  68   w_codecvt::state_type state01;
  69   zero_state(state01);
  70   result r1 = cvt->in(state01, e_lit, e_lit + size, efrom_next,
  71                       i_arr, i_arr + size, ito_next);
  72   VERIFY( r1 == codecvt_base::ok );
  73   VERIFY( efrom_next == e_lit + size );
  74   VERIFY( ito_next == i_arr + size );
  75   VERIFY( !int_traits::compare(i_arr, i_lit, size) );
  76   VERIFY( !int_traits::compare(ito_next, i_ref, 1) );
  77
  78   delete [] i_arr;
  79   delete [] i_ref;
  80 }
  81
  82 int main ()
  83 {
  84   test01();
  85   return 0;
  86 }