libstdc++-v3/testsuite/22_locale/codecvt_members_wchar_t_char.cc

   1 // 2000-08-18 Benjamin Kosnik <bkoz@cygnus.com>
   2
   3 // Copyright (C) 2000, 2002 Free Software Foundation
   4 //
   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)
   9 // any later version.
  10
  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.
  15
  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,
  19 // USA.
  20
  21 // 22.2.1.5 - Template class codecvt [lib.locale.codecvt]
  22
  23 #include <cwchar> // for mbstate_t
  24 #include <locale>
  25 #include <testsuite_hooks.h>
  26
  27
  28 // Need to explicitly set the state(mbstate_t) to zero.
  29 // How to do this is not specified by the ISO C99 standard, so we
  30 // might need to add some operators to make the intuiative case
  31 // work:
  32 //   w_codecvt::state_type state00;
  33 //   state00 = 0;
  34 // or, can use this explicit "C" initialization:
  35 //   w_codecvt::state_type state01 = {0, 0};
  36 // .. except Ulrich says: Use memset. Always use memset. Feel the force...
  37 #ifdef _GLIBCPP_USE_WCHAR_T
  38 void
  39 zero_state(std::mbstate_t& state)
  40 { std::memset(&state, 0, sizeof(std::mbstate_t)); }
  41
  42 // Required instantiation
  43 // codecvt<wchar_t, char, mbstate_t>
  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   typedef char_traits<char>                     ext_traits;
  53
  54   bool                  test = true;
  55   const ext_type*       e_lit = "black pearl jasmine tea";
  56   const ext_type*       efrom_next;
  57   const int_type*       i_lit = L"black pearl jasmine tea";
  58   const int_type*       ifrom_next;
  59   int                   size = strlen(e_lit);
  60   ext_type*             e_arr = new ext_type[size + 1];
  61   ext_type*             eto_next;
  62   int_type*             i_arr = new int_type[size + 1];
  63   int_type*             ito_next;
  64
  65   locale                loc;
  66   const w_codecvt*      cvt = &use_facet<w_codecvt>(loc);
  67
  68   // in
  69   w_codecvt::state_type state01;
  70   zero_state(state01);
  71   result r1 = cvt->in(state01, e_lit, e_lit + size, efrom_next,
  72                       i_arr, i_arr + size, ito_next);
  73   VERIFY( r1 == codecvt_base::ok );
  74   VERIFY( !int_traits::compare(i_arr, i_lit, size) );
  75   VERIFY( efrom_next == e_lit + size );
  76   VERIFY( ito_next == i_arr + size );
  77
  78   // out
  79   w_codecvt::state_type state02;
  80   zero_state(state02);
  81   result r2 = cvt->out(state02, i_lit, i_lit + size, ifrom_next,
  82                        e_arr, e_arr + size, eto_next);
  83   VERIFY( r2 == codecvt_base::ok );
  84   VERIFY( !ext_traits::compare(e_arr, e_lit, size) );
  85   VERIFY( ifrom_next == i_lit + size );
  86   VERIFY( eto_next == e_arr + size );
  87
  88   // unshift
  89   strcpy(e_arr, e_lit);
  90   w_codecvt::state_type state03;
  91   zero_state(state03);
  92   result r3 = cvt->unshift(state03, e_arr, e_arr + size, eto_next);
  93   VERIFY( r3 == codecvt_base::noconv );
  94   VERIFY( !strcmp(e_arr, e_lit) );
  95   VERIFY( eto_next == e_arr );
  96
  97   int i = cvt->encoding();
  98   VERIFY( i == 4 ); // Target-dependent.
  99
 100   VERIFY( !cvt->always_noconv() );
 101
 102   w_codecvt::state_type state04;
 103   zero_state(state04);
 104   int j = cvt->length(state03, e_lit, e_lit + size, 5);
 105   VERIFY( j == 5 );
 106
 107   int k = cvt->max_length();
 108   VERIFY( k == 1 );
 109
 110   delete [] e_arr;
 111   delete [] i_arr;
 112 }
 113
 114 // libstdc++/5280
 115 void test02()
 116 {
 117 #ifdef _GLIBCPP_HAVE_SETENV
 118   // Set the global locale to non-"C".
 119   std::locale loc_de("de_DE");
 120   std::locale::global(loc_de);
 121
 122   // Set LANG environment variable to de_DE.
 123   const char* oldLANG = getenv("LANG");
 124   if (!setenv("LANG", "de_DE", 1))
 125     {
 126       test01();
 127       setenv("LANG", oldLANG ? oldLANG : "", 1);
 128     }
 129 #endif
 130 }
 131
 132 // http://gcc.gnu.org/ml/libstdc++/2002-05/msg00038.html
 133 void test03()
 134 {
 135   bool test = true;
 136
 137   const char* tentLANG = std::setlocale(LC_ALL, "ja_JP.eucjp");
 138   if (tentLANG != NULL)
 139     {
 140       std::string preLANG = tentLANG;
 141       test01();
 142       std::string postLANG = std::setlocale(LC_ALL, NULL);
 143       VERIFY( preLANG == postLANG );
 144     }
 145 }
 146 #endif /* !defined(_GLIBCPP_USE_WCHAR_T) */
 147
 148
 149 int main ()
 150 {
 151 #if _GLIBCPP_USE_WCHAR_T
 152   test01();
 153   test02();
 154   test03();
 155 #endif
 156
 157   return 0;
 158 }