libstdc++-v3/testsuite/22_locale/codecvt/unshift/wchar_t/4.cc

   1 // { dg-require-namedlocale "" }
   2
   3 // 2003-02-06  Petur Runolfsson  <peturr02@ru.is>
   4
   5 // Copyright (C) 2003, 2005 Free Software Foundation
   6 //
   7 // This file is part of the GNU ISO C++ Library.  This library is free
   8 // software; you can redistribute it and/or modify it under the
   9 // terms of the GNU General Public License as published by the
  10 // Free Software Foundation; either version 2, or (at your option)
  11 // any later version.
  12
  13 // This library is distributed in the hope that it will be useful,
  14 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 // GNU General Public License for more details.
  17
  18 // You should have received a copy of the GNU General Public License along
  19 // with this library; see the file COPYING.  If not, write to the Free
  20 // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
  21 // USA.
  22
  23 // 22.2.1.5 - Template class codecvt [lib.locale.codecvt]
  24
  25 #include <locale>
  26 #include <testsuite_hooks.h>
  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 void
  38 zero_state(std::mbstate_t& state)
  39 { std::memset(&state, 0, sizeof(std::mbstate_t)); }
  40
  41 // Required instantiation
  42 // codecvt<wchar_t, char, mbstate_t>
  43 void test04()
  44 {
  45   using namespace std;
  46   typedef codecvt<wchar_t, char, mbstate_t>     w_codecvt;
  47   typedef codecvt_base::result                  result;
  48   typedef wchar_t                               int_type;
  49   typedef char                                  ext_type;
  50   typedef char_traits<char>                     ext_traits;
  51
  52   bool test __attribute__((unused)) = true;
  53   const int_type        i_lit[] = {
  54     0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8, 0x9, 0xa, 0xb, 0xc,
  55     0xd, 0xe, 0xf, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
  56     0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 0x20, L'!',
  57     L'"', L'#', L'$', L'%', L'&', L'\'', L'(', L')', L'*', L'+',
  58     L',', L'-', L'.', L'/', L'0', L'1', L'2', L'3', L'4', L'5',
  59     L'6', L'7', L'8', L'9', L':', L';', L'<', L'=', L'>', L'?',
  60     L'@', L'}', L'~', 0x7f, 0x80, 0x81, 0x82, 0x83, 0x84, 0x85,
  61     0x86, 0x87, 0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f,
  62     0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99,
  63     0x9a, 0x9b, 0x9c, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff, 0x100,
  64     0x101, 0x102, 0x103, 0x104, 0x105, 0x106, 0x107, 0x108, 0x109,
  65     0x10a, 0x10b, 0x10c, 0x10d, 0x10e, 0x10f, 0x110, 0x111, 0x112,
  66     0x113, 0x114, 0x115, 0x116, 0x117, 0x118, 0x119, 0x7f8, 0x7f9,
  67     0x7fa, 0x7fb, 0x7fc, 0x7fd, 0x7fe, 0x7ff, 0x800, 0x801, 0x802,
  68     0x803, 0x804, 0x805, 0x806, 0x807, 0x808, 0x809, 0x80a, 0x80b,
  69     0x80c, 0x80d, 0x80e, 0x80f, 0x810, 0x811, 0x812, 0x813, 0x814,
  70     0x815, 0x816, 0x817, 0x1, 0x2, 0x4, 0x8, 0x10, 0x20, L'@',
  71     0x80, 0x100, 0x200, 0x400, 0x800, 0x1000, 0x2000, 0x4000, 0x8000,
  72     0x10000, 0x20000, 0x40000, 0x80000, 0x100000, 0x200000, 0x400000,
  73     0x800000, 0x1000000, 0x2000000, 0x4000000, 0x8000000, 0x10000000,
  74     0x20000000, 0x40000000, 0x0
  75   };
  76
  77   const int_type*       ifrom_next;
  78   int                   size = wcslen(i_lit);
  79   ext_type*             e_arr = new ext_type[size + 1];
  80   ext_type*             e_ref = new ext_type[size + 1];
  81   memset(e_arr, 0xf0, size + 1);
  82   memset(e_ref, 0xf0, size + 1);
  83   ext_type*             eto_next;
  84
  85   locale loc = locale("en_US.UTF-8");
  86   locale::global(loc);
  87   const w_codecvt*      cvt = &use_facet<w_codecvt>(loc);
  88
  89   // unshift
  90   w_codecvt::state_type state01;
  91   zero_state(state01);
  92   result r1 = cvt->unshift(state01, e_arr, e_arr + size, eto_next);
  93   VERIFY( r1 == codecvt_base::noconv );
  94   VERIFY( !ext_traits::compare(e_arr, e_ref, size + 1) );
  95   VERIFY( eto_next == e_arr );
  96
  97   for (int i = 0; i < size; ++i)
  98     {
  99       w_codecvt::state_type state02;
 100       zero_state(state02);
 101       cvt->out(state02, i_lit + i, i_lit + i + 1, ifrom_next,
 102                e_arr, e_arr + size, eto_next);
 103       memset(e_arr, 0xf0, size + 1);
 104       result r2 = cvt->unshift(state02, e_arr, e_arr + size, eto_next);
 105       VERIFY( r2 == codecvt_base::noconv );
 106       VERIFY( !ext_traits::compare(e_arr, e_ref, size + 1) );
 107       VERIFY( eto_next == e_arr );
 108     }
 109
 110   delete [] e_arr;
 111   delete [] e_ref;
 112 }
 113
 114 int main ()
 115 {
 116   test04();
 117   return 0;
 118 }