libstdc++-v3/testsuite/22_locale/codecvt/unshift/wchar_t/4.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 test04()
  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 = true;
  51   const int_type        i_lit[] = {
  52     0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8, 0x9, 0xa, 0xb, 0xc,
  53     0xd, 0xe, 0xf, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
  54     0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 0x20, L'!',
  55     L'"', L'#', L'$', L'%', L'&', L'\'', L'(', L')', L'*', L'+',
  56     L',', L'-', L'.', L'/', L'0', L'1', L'2', L'3', L'4', L'5',
  57     L'6', L'7', L'8', L'9', L':', L';', L'<', L'=', L'>', L'?',
  58     L'@', L'}', L'~', 0x7f, 0x80, 0x81, 0x82, 0x83, 0x84, 0x85,
  59     0x86, 0x87, 0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f,
  60     0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99,
  61     0x9a, 0x9b, 0x9c, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff, 0x100,
  62     0x101, 0x102, 0x103, 0x104, 0x105, 0x106, 0x107, 0x108, 0x109,
  63     0x10a, 0x10b, 0x10c, 0x10d, 0x10e, 0x10f, 0x110, 0x111, 0x112,
  64     0x113, 0x114, 0x115, 0x116, 0x117, 0x118, 0x119, 0x7f8, 0x7f9,
  65     0x7fa, 0x7fb, 0x7fc, 0x7fd, 0x7fe, 0x7ff, 0x800, 0x801, 0x802,
  66     0x803, 0x804, 0x805, 0x806, 0x807, 0x808, 0x809, 0x80a, 0x80b,
  67     0x80c, 0x80d, 0x80e, 0x80f, 0x810, 0x811, 0x812, 0x813, 0x814,
  68     0x815, 0x816, 0x817, 0x1, 0x2, 0x4, 0x8, 0x10, 0x20, L'@',
  69     0x80, 0x100, 0x200, 0x400, 0x800, 0x1000, 0x2000, 0x4000, 0x8000,
  70     0x10000, 0x20000, 0x40000, 0x80000, 0x100000, 0x200000, 0x400000,
  71     0x800000, 0x1000000, 0x2000000, 0x4000000, 0x8000000, 0x10000000,
  72     0x20000000, 0x40000000, 0x0
  73   };
  74
  75   const int_type*       ifrom_next;
  76   int                   size = wcslen(i_lit);
  77   ext_type*             e_arr = new ext_type[size + 1];
  78   ext_type*             e_ref = new ext_type[size + 1];
  79   memset(e_arr, 0xf0, size + 1);
  80   memset(e_ref, 0xf0, size + 1);
  81   ext_type*             eto_next;
  82
  83   locale loc = __gnu_cxx_test::try_named_locale("en_US.UTF-8");
  84   locale::global(loc);
  85   const w_codecvt*      cvt = &use_facet<w_codecvt>(loc);
  86
  87   // unshift
  88   w_codecvt::state_type state01;
  89   zero_state(state01);
  90   result r1 = cvt->unshift(state01, e_arr, e_arr + size, eto_next);
  91   VERIFY( r1 == codecvt_base::noconv );
  92   VERIFY( !ext_traits::compare(e_arr, e_ref, size + 1) );
  93   VERIFY( eto_next == e_arr );
  94
  95   for (int i = 0; i < size; ++i)
  96     {
  97       w_codecvt::state_type state02;
  98       zero_state(state02);
  99       cvt->out(state02, i_lit + i, i_lit + i + 1, ifrom_next,
 100                e_arr, e_arr + size, eto_next);
 101       memset(e_arr, 0xf0, size + 1);
 102       result r2 = cvt->unshift(state02, e_arr, e_arr + size, eto_next);
 103       VERIFY( r2 == codecvt_base::noconv );
 104       VERIFY( !ext_traits::compare(e_arr, e_ref, size + 1) );
 105       VERIFY( eto_next == e_arr );
 106     }
 107
 108   delete [] e_arr;
 109   delete [] e_ref;
 110 }
 111
 112 int main ()
 113 {
 114   test04();
 115   return 0;
 116 }