libstdc++-v3/testsuite/22_locale/codecvt/unshift/wchar_t/2.cc

   1 // 2003-02-06  Petur Runolfsson  <peturr02@ru.is>
   2
   3 // Copyright (C) 2003 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 <locale>
  24 #include <testsuite_hooks.h>
  25
  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
  29 // work:
  30 //   w_codecvt::state_type state00;
  31 //   state00 = 0;
  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...
  35 void
  36 zero_state(std::mbstate_t& state)
  37 { std::memset(&state, 0, sizeof(std::mbstate_t)); }
  38
  39 // Required instantiation
  40 // codecvt<wchar_t, char, mbstate_t>
  41 void test02()
  42 {
  43   using namespace std;
  44   typedef codecvt<wchar_t, char, mbstate_t>     w_codecvt;
  45   typedef codecvt_base::result                  result;
  46   typedef wchar_t                               int_type;
  47   typedef char                                  ext_type;
  48   typedef char_traits<char>                     ext_traits;
  49
  50   bool test __attribute__((unused)) = true;
  51   const int_type*       i_lit =
  52     L"\x1\x2\x3\x4\x5\x6\x7\x8\x9\xa\xb\xc\xd\xe\xf\x10\x11\x12\x13"
  53     L"\x14\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f\x20!\"#$%&"
  54     L"'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`"
  55     L"abcdefghijklmnopqrstuvwxyz{|}~\x7f\x80\x81\x82\x83\x84\x85\x86"
  56     L"\x87\x88\x89\x8a\x8b\x8c\x8d\x8e\x8f\x90\x91\x92\x93\x94\x95"
  57     L"\x96\x97\x98\x99\x9a\x9b\x9c\x9d\x9e\x9f\xa0\xa1\xa2\xa3\xa4"
  58     L"\xa5\xa6\xa7\xa8\xa9\xaa\xab\xac\xad\xae\xaf\xb0\xb1\xb2\xb3"
  59     L"\xb4\xb5\xb6\xb7\xb8\xb9\xba\xbb\xbc\xbd\xbe\xbf\xc0\xc1\xc2"
  60     L"\xc3\xc4\xc5\xc6\xc7\xc8\xc9\xca\xcb\xcc\xcd\xce\xcf\xd0\xd1"
  61     L"\xd2\xd3\xd4\xd5\xd6\xd7\xd8\xd9\xda\xdb\xdc\xdd\xde\xdf\xe0"
  62     L"\xe1\xe2\xe3\xe4\xe5\xe6\xe7\xe8\xe9\xea\xeb\xec\xed\xee\xef"
  63     L"\xf0\xf1\xf2\xf3\xf4\xf5\xf6\xf7\xf8\xf9\xfa\xfb\xfc\xfd\xfe"
  64     L"\xff";
  65
  66   const int_type*       ifrom_next;
  67   int                   size = wcslen(i_lit);
  68   ext_type*             e_arr = new ext_type[size + 1];
  69   ext_type*             e_ref = new ext_type[size + 1];
  70   memset(e_arr, 0xf0, size + 1);
  71   memset(e_ref, 0xf0, size + 1);
  72   ext_type*             eto_next;
  73
  74   locale loc = __gnu_test::try_named_locale("en_US.ISO-8859-1");
  75   locale::global(loc);
  76   const w_codecvt*      cvt = &use_facet<w_codecvt>(loc);
  77
  78   // unshift
  79   w_codecvt::state_type state01;
  80   zero_state(state01);
  81   result r1 = cvt->unshift(state01, e_arr, e_arr + size, eto_next);
  82   VERIFY( r1 == codecvt_base::noconv );
  83   VERIFY( !ext_traits::compare(e_arr, e_ref, size + 1) );
  84   VERIFY( eto_next == e_arr );
  85
  86   for (int i = 0; i < size; ++i)
  87     {
  88       w_codecvt::state_type state02;
  89       zero_state(state02);
  90       cvt->out(state02, i_lit + i, i_lit + i + 1, ifrom_next,
  91                e_arr, e_arr + size, eto_next);
  92       memset(e_arr, 0xf0, size + 1);
  93       result r2 = cvt->unshift(state02, e_arr, e_arr + size, eto_next);
  94       VERIFY( r2 == codecvt_base::noconv );
  95       VERIFY( !ext_traits::compare(e_arr, e_ref, size + 1) );
  96       VERIFY( eto_next == e_arr );
  97     }
  98
  99   delete [] e_arr;
 100   delete [] e_ref;
 101 }
 102
 103 int main ()
 104 {
 105   test02();
 106   return 0;
 107 }