gomp-20050608-branch/libstdc++-v3/testsuite/27_io/basic_ostream/inserters_other/wchar_t/4.cc

   1 // Copyright (C) 2005 Free Software Foundation
   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 // 27.6.2.5.4 basic_ostream character inserters
  20
  21 #include <ostream>
  22 #include <sstream>
  23 #include <testsuite_hooks.h>
  24
  25 class test_buffer_1 : public std::wstreambuf
  26 {
  27 public:
  28   test_buffer_1(const std::wstring& s)
  29   : str(s), it(str.begin()) { }
  30
  31 protected:
  32   virtual int_type
  33   underflow()
  34   { return (it != str.end() ? *it : WEOF); }
  35
  36   virtual int_type
  37   uflow()
  38   { return (it != str.end() ? *it++ : WEOF); }
  39
  40 private:
  41   const std::wstring str;
  42   std::wstring::const_iterator it;
  43 };
  44
  45
  46 class test_buffer_2 : public std::wstreambuf
  47 {
  48 public:
  49   test_buffer_2(const std::wstring& s)
  50   : str(s), it(str.begin()) { }
  51
  52 protected:
  53   virtual int_type
  54   underflow()
  55   { return (it != str.end() ? *it : WEOF); }
  56
  57   virtual int_type
  58   uflow()
  59   { return (it != str.end() ? *it++ : WEOF); }
  60
  61   virtual std::streamsize
  62   showmanyc()
  63   { return std::distance(it, str.end()); }
  64
  65 private:
  66   const std::wstring str;
  67   std::wstring::const_iterator it;
  68 };
  69
  70
  71 class test_buffer_3 : public std::wstreambuf
  72 {
  73 public:
  74   test_buffer_3(const std::wstring& s)
  75   : str(s), it(str.begin()) { }
  76
  77 protected:
  78   virtual int_type
  79   underflow()
  80   { return (it != str.end() ? *it : WEOF); }
  81
  82   virtual int_type
  83   uflow()
  84   { return (it != str.end() ? *it++ : WEOF); }
  85
  86   virtual std::streamsize
  87   showmanyc()
  88   {
  89     std::streamsize ret = std::distance(it, str.end());
  90     return ret > 0 ? ret : -1;
  91   }
  92
  93 private:
  94   const std::wstring str;
  95   std::wstring::const_iterator it;
  96 };
  97
  98 class test_buffer_4 : public std::wstreambuf
  99 {
 100 public:
 101   test_buffer_4(const std::wstring& s)
 102   : str(s), it(str.begin())
 103   {
 104     if (it != str.end())
 105       {
 106         buf[0] = *it++;
 107         setg(buf, buf, buf+1);
 108       }
 109   }
 110
 111 protected:
 112   virtual int_type
 113   underflow()
 114   { return (it != str.end() ? *it : WEOF); }
 115
 116   virtual int_type
 117   uflow()
 118   { return (it != str.end() ? *it++ : WEOF); }
 119
 120   virtual std::streamsize
 121   showmanyc()
 122   {
 123     std::streamsize ret = std::distance(it, str.end());
 124     return ret > 0 ? ret : -1;
 125   }
 126
 127 private:
 128   const std::wstring str;
 129   std::wstring::const_iterator it;
 130   wchar_t buf[1];
 131 };
 132
 133 void test(const std::wstring& str, std::wstreambuf& buf)
 134 {
 135   bool test __attribute__((unused)) = true;
 136
 137   std::wostringstream out;
 138   std::wistream in(&buf);
 139
 140   out << in.rdbuf();
 141
 142   if (out.str() != str)
 143     VERIFY( false );
 144 }
 145
 146 // libstdc++/6745
 147 // libstdc++/8071
 148 // libstdc++/8127
 149 // Jonathan Lennox  <lennox@cs.columbia.edu>
 150 void test05()
 151 {
 152   std::wstring string_a(L"Hello, world!");
 153   std::wstring string_b(L"");
 154
 155   test_buffer_1 buf1a(string_a);
 156   test_buffer_1 buf1b(string_b);
 157
 158   test_buffer_2 buf2a(string_a);
 159   test_buffer_2 buf2b(string_b);
 160
 161   test_buffer_3 buf3a(string_a);
 162   test_buffer_3 buf3b(string_b);
 163
 164   test_buffer_4 buf4a(string_a);
 165   test_buffer_4 buf4b(string_b);
 166
 167   test(string_a, buf1a);
 168   test(string_b, buf1b);
 169
 170   test(string_a, buf2a);
 171   test(string_b, buf2b);
 172
 173   test(string_a, buf3a);
 174   test(string_b, buf3b);
 175
 176   test(string_a, buf4a);
 177   test(string_b, buf4b);
 178 }
 179
 180 int
 181 main()
 182 {
 183   test05();
 184   return 0;
 185 }