old-autovect-branch/libstdc++-v3/testsuite/27_io/basic_istream/getline/wchar_t/4.cc

   1 // Copyright (C) 2004 Free Software Foundation, Inc.
   2 //
   3 // This file is part of the GNU ISO C++ Library.  This library is free
   4 // software; you can redistribute it and/or modify it under the
   5 // terms of the GNU General Public License as published by the
   6 // Free Software Foundation; either version 2, or (at your option)
   7 // any later version.
   8
   9 // This library is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13
  14 // You should have received a copy of the GNU General Public License along
  15 // with this library; see the file COPYING.  If not, write to the Free
  16 // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
  17 // USA.
  18
  19 // As a special exception, you may use this file as part of a free software
  20 // library without restriction.  Specifically, if other files instantiate
  21 // templates or use macros or inline functions from this file, or you compile
  22 // this file and link it with other files to produce an executable, this
  23 // file does not by itself cause the resulting executable to be covered by
  24 // the GNU General Public License.  This exception does not however
  25 // invalidate any other reasons why the executable file might be covered by
  26 // the GNU General Public License.
  27
  28 // 27.6.1.3 unformatted input functions
  29
  30 #include <cwchar> // for wcslen
  31 #include <istream>
  32 #include <testsuite_hooks.h>
  33
  34 class Inbuf : public std::wstreambuf
  35 {
  36   static const wchar_t buf[];
  37   const wchar_t* current;
  38   int size;
  39
  40 public:
  41   Inbuf()
  42   {
  43     current = buf;
  44     size = std::wcslen(buf);
  45   }
  46
  47   int_type underflow()
  48   {
  49     if (current < buf + size)
  50       return traits_type::to_int_type(*current);
  51     return traits_type::eof();
  52   }
  53
  54   int_type uflow()
  55   {
  56     if (current < buf + size)
  57       return traits_type::to_int_type(*current++);
  58     return traits_type::eof();
  59   }
  60 };
  61
  62 const wchar_t Inbuf::buf[] = L"1234567890abcdefghij";
  63
  64 void test01()
  65 {
  66   using namespace std;
  67   bool test __attribute__((unused)) = true;
  68
  69   typedef char_traits<wchar_t>   traits_type;
  70
  71   Inbuf inbuf1;
  72   wistream is(&inbuf1);
  73
  74   wchar_t buffer[10];
  75   traits_type::assign(buffer, sizeof(buffer) / sizeof(wchar_t), L'X');
  76
  77   is.getline(buffer, sizeof(buffer) / sizeof(wchar_t), L'0');
  78   VERIFY( is.rdstate() == ios_base::goodbit );
  79   VERIFY( !traits_type::compare(buffer, L"123456789\0",
  80                                 sizeof(buffer) / sizeof(wchar_t)) );
  81   VERIFY( is.gcount() == 10 );
  82
  83   is.clear();
  84   traits_type::assign(buffer, sizeof(buffer) / sizeof(wchar_t), L'X');
  85   is.getline(buffer, sizeof(buffer) / sizeof(wchar_t));
  86   VERIFY( is.rdstate() == ios_base::failbit );
  87   VERIFY( !traits_type::compare(buffer, L"abcdefghi\0",
  88                                 sizeof(buffer) / sizeof(wchar_t)) );
  89   VERIFY( is.gcount() == 9 );
  90
  91   is.clear();
  92   traits_type::assign(buffer, sizeof(buffer) / sizeof(wchar_t), L'X');
  93   is.getline(buffer, sizeof(buffer) / sizeof(wchar_t));
  94   VERIFY( is.rdstate() == ios_base::eofbit );
  95   VERIFY( !traits_type::compare(buffer, L"j\0XXXXXXXX",
  96                                 sizeof(buffer) / sizeof(wchar_t)) );
  97   VERIFY( is.gcount() == 1 );
  98
  99   is.clear();
 100   traits_type::assign(buffer, sizeof(buffer) / sizeof(wchar_t), L'X');
 101   is.getline(buffer, sizeof(buffer) / sizeof(wchar_t));
 102   VERIFY( is.rdstate() == (ios_base::eofbit | ios_base::failbit) );
 103   VERIFY( !traits_type::compare(buffer, L"\0XXXXXXXXX",
 104                                 sizeof(buffer) / sizeof(wchar_t)) );
 105   VERIFY( is.gcount() == 0 );
 106 }
 107
 108 int main()
 109 {
 110   test01();
 111   return 0;
 112 }