libstdc++-v3/testsuite/27_io/basic_stringbuf/seekpos/wchar_t/1.cc

   1 // 981208 bkoz test functionality of basic_stringbuf for char_type == wchar_t
   2
   3 // Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2009, 2010
   4 // Free Software Foundation, Inc.
   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 #include <sstream>
  22 #include <testsuite_hooks.h>
  23
  24 std::wstring str_01(L"mykonos. . . or what?");
  25 std::wstringbuf strb_01(str_01);
  26
  27 // test overloaded virtual functions
  28 void test04()
  29 {
  30   bool test __attribute__((unused)) = true;
  31   std::wstring          str_tmp;
  32   typedef std::wstringbuf::int_type int_type;
  33   typedef std::wstringbuf::pos_type pos_type;
  34   typedef std::wstringbuf::off_type off_type;
  35
  36   int_type c1 = strb_01.sbumpc();
  37   int_type c3 = strb_01.sbumpc();
  38
  39   pos_type pt_1(off_type(-1));
  40   pos_type pt_2(off_type(0));
  41   off_type off_1 = 0;
  42   off_type off_2 = 0;
  43
  44   // BUFFER MANAGEMENT & POSITIONING
  45
  46   // seekpos
  47   // pubseekpos(pos_type sp, ios_base::openmode)
  48   // alters the stream position to sp
  49   strb_01.str(str_01); //in|out ("mykonos. . . or what?");
  50
  51   //IN|OUT
  52   //beg
  53   pt_1 = strb_01.pubseekoff(2, std::ios_base::beg);
  54   off_1 = off_type(pt_1);
  55   VERIFY( off_1 >= 0 );
  56   pt_1 = strb_01.pubseekoff(0, std::ios_base::cur, std::ios_base::out);
  57   off_1 = off_type(pt_1);
  58   c1 = strb_01.snextc(); //current in pointer +1
  59   VERIFY( c1 == L'o' );
  60   strb_01.sputc(L'x');  //test current out pointer
  61   str_tmp = std::wstring(L"myxonos. . . or what?");
  62   VERIFY( strb_01.str() == str_tmp );
  63   strb_01.pubsync(); //resets pointers
  64   pt_2 = strb_01.pubseekpos(pt_1, std::ios_base::in|std::ios_base::out);
  65   off_2 = off_type(pt_2);
  66   VERIFY( off_1 == off_2 );
  67   c3 = strb_01.snextc(); //current in pointer +1
  68   VERIFY( c1 == c3 );
  69   strb_01.sputc(L'x');  //test current out pointer
  70   str_tmp = std::wstring(L"myxonos. . . or what?");
  71   VERIFY( strb_01.str() == str_tmp );
  72 }
  73
  74 int main()
  75 {
  76   test04();
  77   return 0;
  78 }
  79
  80
  81
  82 // more candy!!!