libstdc++-v3/testsuite/27_io/basic_istream/getline/char/1.cc

   1 // 1999-08-11 bkoz
   2
   3 // Copyright (C) 1999, 2000, 2001, 2002, 2003, 2009, 2010
   4 // Free Software Foundation
   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 // 27.6.1.3 unformatted input functions
  22
  23 #include <istream>
  24 #include <sstream>
  25 #include <testsuite_hooks.h>
  26
  27 void
  28 test02()
  29 {
  30   typedef std::char_traits<char>        traits_type;
  31
  32   bool test __attribute__((unused)) = true;
  33   const char str_lit01[] = "\t\t\t    sun*ra \n"
  34   "                            "
  35   "and his myth science arkestra present\n"
  36   "                            "
  37   "angles and demons @ play\n"
  38   "                            "
  39   "the nubians of plutonia";
  40   std::string str01(str_lit01);
  41   std::string strtmp;
  42
  43   std::stringbuf sbuf_04(str01, std::ios_base::in);
  44
  45   std::istream is_00(0);
  46   std::istream is_04(&sbuf_04);
  47   std::ios_base::iostate state1, state2, statefail, stateeof;
  48   statefail = std::ios_base::failbit;
  49   stateeof = std::ios_base::eofbit;
  50   char carray1[400] = "";
  51
  52   // istream& getline(char* s, streamsize n, char delim)
  53   // istream& getline(char* s, streamsize n)
  54   state1 = is_00.rdstate();
  55   is_00.getline(carray1, 20, '*');
  56   state2 = is_00.rdstate();
  57   // make sure failbit was set, since we couldn't extract
  58   // from the null streambuf...
  59   VERIFY( state1 != state2 );
  60   VERIFY( static_cast<bool>(state2 & statefail) );
  61
  62   VERIFY( is_04.gcount() == 0 );
  63   state1 = is_04.rdstate();
  64   is_04.getline(carray1, 1, '\t'); // extracts, throws away
  65   state2 = is_04.rdstate();
  66   VERIFY( is_04.gcount() == 1 );
  67   VERIFY( state1 == state2 );
  68   VERIFY( state1 == 0 );
  69   VERIFY( !traits_type::compare("", carray1, 1) );
  70
  71   state1 = is_04.rdstate();
  72   is_04.getline(carray1, 20, '*');
  73   state2 = is_04.rdstate();
  74   VERIFY( is_04.gcount() == 10 );
  75   VERIFY( state1 == state2 );
  76   VERIFY( state1 == 0 );
  77   VERIFY( !traits_type::compare("\t\t    sun", carray1, 10) );
  78
  79   state1 = is_04.rdstate();
  80   is_04.getline(carray1, 20);
  81   state2 = is_04.rdstate();
  82   VERIFY( is_04.gcount() == 4 );
  83   VERIFY( state1 == state2 );
  84   VERIFY( state1 == 0 );
  85   VERIFY( !traits_type::compare("ra ", carray1, 4) );
  86
  87   state1 = is_04.rdstate();
  88   is_04.getline(carray1, 65);
  89   state2 = is_04.rdstate();
  90   VERIFY( is_04.gcount() == 64 );
  91   VERIFY( state1 != state2 );
  92   VERIFY( state2 == statefail );
  93   VERIFY( !traits_type::compare(
  94   "                            and his myth science arkestra presen",
  95                                carray1, 65) );
  96
  97   is_04.clear();
  98   state1 = is_04.rdstate();
  99   is_04.getline(carray1, 120, '|');
 100   state2 = is_04.rdstate();
 101   VERIFY( is_04.gcount() == 106 );
 102   VERIFY( state1 != state2 );
 103   VERIFY( state2 == stateeof );
 104
 105   is_04.clear();
 106   state1 = is_04.rdstate();
 107   is_04.getline(carray1, 100, '|');
 108   state2 = is_04.rdstate();
 109   VERIFY( is_04.gcount() == 0 );
 110   VERIFY( state1 != state2 );
 111   VERIFY( static_cast<bool>(state2 & stateeof) );
 112   VERIFY( static_cast<bool>(state2 & statefail) );
 113 }
 114
 115 int
 116 main()
 117 {
 118   test02();
 119   return 0;
 120 }