num_put_members_char.cc

俄罗斯高人Mamaich的Pocket gcc编译器（运行在PocketPC上）的全部源代码。

// 2001-11-19 Benjamin Kosnik  <[e-mail]>

// Copyright (C) 2001, 2002, 2003 Free Software Foundation
//
// This file is part of the GNU ISO C++ Library.  This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 2, or (at your option)
// any later version.

// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING.  If not, write to the Free
// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
// USA.

// 22.2.2.2.1  num_put members

#include <locale>
#include <sstream>
#include <testsuite_hooks.h>

// XXX This test is not working for non-glibc locale models.
// { dg-do run { xfail *-*-* } }

void test01()
{
  using namespace std;
  typedef ostreambuf_iterator<char> iterator_type;

  bool test = true;

  // basic construction
  locale loc_c = locale::classic();
  locale loc_hk("en_HK");
  locale loc_fr("fr_FR@euro");
  locale loc_de("de_DE");
  VERIFY( loc_c != loc_de );
  VERIFY( loc_hk != loc_fr );
  VERIFY( loc_hk != loc_de );
  VERIFY( loc_de != loc_fr );

  // cache the numpunct facets
  const numpunct<char>& numpunct_c = use_facet<numpunct<char> >(loc_c); 
  const numpunct<char>& numpunct_de = use_facet<numpunct<char> >(loc_de); 
  const numpunct<char>& numpunct_hk = use_facet<numpunct<char> >(loc_hk); 

  // sanity check the data is correct.
  const string empty;
  string result1;
  string result2;
  char c;

  bool b1 = true;
  bool b0 = false;
  long l1 = 2147483647;
  long l2 = -2147483647;
  unsigned long ul1 = 1294967294;
  unsigned long ul2 = 0;
  double d1 =  1.7976931348623157e+308;
  double d2 = 2.2250738585072014e-308;
  long double ld1 = 1.7976931348623157e+308;
  long double ld2 = 2.2250738585072014e-308;
  const void* cv = &ld1;

  // cache the num_put facet
  ostringstream oss;
  oss.imbue(loc_de);
  const num_put<char>& np = use_facet<num_put<char> >(oss.getloc()); 

  // bool, simple
  iterator_type os_it00 = oss.rdbuf();
  iterator_type os_it01 = np.put(os_it00, oss, '+', b1);
  result1 = oss.str();
  VERIFY( result1 == "1" );
  //  VERIFY( os_it00 != os_it01 );

  oss.str(empty);
  np.put(oss.rdbuf(), oss, '+', b0);
  result2 = oss.str();
  VERIFY( result2 == "0" );

  // bool, more twisted examples
  oss.imbue(loc_c);
  oss.str(empty);
  oss.width(20);
  oss.setf(ios_base::right, ios_base::adjustfield);
  np.put(oss.rdbuf(), oss, '+', b0);
  result1 = oss.str();
  VERIFY( result1 == "+++++++++++++++++++0" );

  oss.str(empty);
  oss.width(20);
  oss.setf(ios_base::left, ios_base::adjustfield);
  oss.setf(ios_base::boolalpha);
  np.put(oss.rdbuf(), oss, '+', b1);
  result2 = oss.str();
  VERIFY( result2 == "true++++++++++++++++" );

  // long, in a locale that expects grouping
  oss.imbue(loc_hk);
  oss.str(empty);
  oss.clear();
  np.put(oss.rdbuf(), oss, '+', l1);
  result1 = oss.str();
  VERIFY( result1 == "2,147,483,647" );

  oss.str(empty);
  oss.clear();
  oss.width(20);
  oss.setf(ios_base::left, ios_base::adjustfield);
  np.put(oss.rdbuf(), oss, '+', l2);
  result1 = oss.str();
  VERIFY( result1 == "-2,147,483,647++++++" );

  // unsigned long, in a locale that does not group
  oss.imbue(loc_c);
  oss.str(empty);
  oss.clear();
  np.put(oss.rdbuf(), oss, '+', ul1);
  result1 = oss.str();
  VERIFY( result1 == "1294967294" );

  oss.str(empty);
  oss.clear();
  oss.width(20);
  oss.setf(ios_base::left, ios_base::adjustfield);
  np.put(oss.rdbuf(), oss, '+', ul2);
  result1 = oss.str();
  VERIFY( result1 == "0+++++++++++++++++++" );

  // ... and one that does
  oss.imbue(loc_de);
  oss.str(empty);
  oss.clear();
  oss.width(20);
  oss.setf(ios_base::left, ios_base::adjustfield);
  np.put(oss.rdbuf(), oss, '+', ul1);
  result1 = oss.str();
  VERIFY( result1 == "1.294.967.294+++++++" );

  // double
  oss.str(empty);
  oss.clear();
  oss.width(20);
  oss.setf(ios_base::left, ios_base::adjustfield);
  np.put(oss.rdbuf(), oss, '+', d1);
  result1 = oss.str();
  VERIFY( result1 == "1,79769e+308++++++++" );

  oss.str(empty);
  oss.clear();
  oss.width(20);
  oss.setf(ios_base::right, ios_base::adjustfield);
  np.put(oss.rdbuf(), oss, '+', d2);
  result1 = oss.str();
  VERIFY( result1 == "++++++++2,22507e-308" );

  oss.str(empty);
  oss.clear();
  oss.width(20);
  oss.setf(ios_base::right, ios_base::adjustfield);
  oss.setf(ios_base::scientific, ios_base::floatfield);
  np.put(oss.rdbuf(), oss, '+', d2);
  result2 = oss.str();
  VERIFY( result2 == "+++++++2,225074e-308" );

  oss.str(empty);
  oss.clear();
  oss.width(20);
  oss.precision(10);
  oss.setf(ios_base::right, ios_base::adjustfield);
  oss.setf(ios_base::scientific, ios_base::floatfield);
  oss.setf(ios_base::uppercase);
  np.put(oss.rdbuf(), oss, '+', d2);
  result1 = oss.str();
  VERIFY( result1 == "+++2,2250738585E-308" );

  // long double
  oss.str(empty);
  oss.clear();
  np.put(oss.rdbuf(), oss, '+', ld1);
  result1 = oss.str();
  VERIFY( result1 == "1,7976931349E+308" );

  oss.str(empty);
  oss.clear();
  oss.precision(0);
  oss.setf(ios_base::fixed, ios_base::floatfield);
  np.put(oss.rdbuf(), oss, '+', ld2);
  result1 = oss.str();
  VERIFY( result1 == "0" );

  // const void
  oss.str(empty);
  oss.clear();
  np.put(oss.rdbuf(), oss, '+', cv);
  result1 = oss.str();
  // No grouping characters.
  VERIFY( !char_traits<char>::find(result1.c_str(), 
				   result1.size(),
				   numpunct_de.decimal_point()) );
  // Should contain an 'x'.
  VERIFY( result1.find('x') == 1 );

#ifdef _GLIBCPP_USE_LONG_LONG
  long long ll1 = 9223372036854775807LL;
  long long ll2 = -9223372036854775807LL;

  oss.str(empty);
  oss.clear();
  np.put(oss.rdbuf(), oss, '+', ll1);
  result1 = oss.str();
  VERIFY( result1 == "9.223.372.036.854.775.807" );
#endif
}

void test02()
{
  using namespace std;
  bool test = true;

  // Check num_put works with other iterators besides streambuf
  // output iterators. (As long as output_iterator requirements are met.)
  typedef string::iterator iter_type;
  typedef char_traits<char> traits;
  typedef num_put<char, iter_type> num_put_type;
  const ios_base::iostate goodbit = ios_base::goodbit;
  const ios_base::iostate eofbit = ios_base::eofbit;
  const locale loc_c = locale::classic();
  const string str("1798 Lady Elgin");
  const string str2("0 true 0xbffff74c Mary Nisbet");
  const string x(15, 'x'); // have to have allocated string!
  string res;

  ostringstream oss; 
  oss.imbue(locale(loc_c, new num_put_type));

  // Iterator advanced, state, output.
  const num_put_type& tp = use_facet<num_put_type>(oss.getloc());

  // 01 put(long)
  // 02 put(long double)
  // 03 put(bool)
  // 04 put(void*)

  // 01 put(long)
  const long l = 1798;
  res = x;
  iter_type ret1 = tp.put(res.begin(), oss, ' ', l);
  string sanity1(res.begin(), ret1);
  VERIFY( res == "1798xxxxxxxxxxx" );
  VERIFY( sanity1 == "1798" );

  // 02 put(long double)
  const long double ld = 1798.0;
  res = x;
  iter_type ret2 = tp.put(res.begin(), oss, ' ', ld);
  string sanity2(res.begin(), ret2);
  VERIFY( res == "1798xxxxxxxxxxx" );
  VERIFY( sanity2 == "1798" );

  // 03 put(bool)
  bool b = 1;
  res = x;
  iter_type ret3 = tp.put(res.begin(), oss, ' ', b);
  string sanity3(res.begin(), ret3);
  VERIFY( res == "1xxxxxxxxxxxxxx" );
  VERIFY( sanity3 == "1" );

  b = 0;
  res = x;
  oss.setf(ios_base::boolalpha);
  iter_type ret4 = tp.put(res.begin(), oss, ' ', b);
  string sanity4(res.begin(), ret4);
  VERIFY( res == "falsexxxxxxxxxx" );
  VERIFY( sanity4 == "false" );

  // 04 put(void*)
  oss.clear();
  const void* cv = &ld;
  res = x;
  oss.setf(ios_base::fixed, ios_base::floatfield);
  iter_type ret5 = tp.put(res.begin(), oss, ' ', cv);
  string sanity5(res.begin(), ret5);
  VERIFY( sanity5.size() );
  VERIFY( sanity5[1] == 'x' );
}

// libstdc++/5280
void test03()
{
#ifdef _GLIBCPP_HAVE_SETENV 
  // Set the global locale to non-"C".
  std::locale loc_de("de_DE");
  std::locale::global(loc_de);

  // Set LANG environment variable to de_DE.
  const char* oldLANG = getenv("LANG");
  if (!setenv("LANG", "de_DE", 1))
    {
      test01();
      test02();
      setenv("LANG", oldLANG ? oldLANG : "", 1);
    }
#endif
}

// http://gcc.gnu.org/ml/libstdc++/2002-05/msg00038.html
void test04()
{
  bool test = true;

  const char* tentLANG = std::setlocale(LC_ALL, "ja_JP.eucjp");
  if (tentLANG != NULL)
    {
      std::string preLANG = tentLANG;
      test01();
      test02();
      std::string postLANG = std::setlocale(LC_ALL, NULL);
      VERIFY( preLANG == postLANG );
    }
}

// Make sure that, in a locale that expects grouping, when showbase
// is true, an hexadecimal or octal zero is correctly output (the case 
// of zero is special since there is no 0x, 0 respectively, prefix)
void test05()
{
  using namespace std;
  bool test = true;

  // A locale that expects grouping.
  locale loc_de("de_DE");

  const string empty;
  string result;

  ostringstream oss;
  oss.imbue(loc_de);
  const num_put<char>& np = use_facet<num_put<char> >(oss.getloc()); 

  long l = 0;

  oss.str(empty);
  oss.clear();
  oss.setf(ios::showbase);
  oss.setf(ios::hex, ios::basefield);
  np.put(oss.rdbuf(), oss, '+', l);
  result = oss.str();
  VERIFY( result == "0" );

  oss.str(empty);
  oss.clear();
  oss.setf(ios::showbase);
  oss.setf(ios::oct, ios::basefield);
  np.put(oss.rdbuf(), oss, '+', l);
  result = oss.str();
  VERIFY( result == "0" );
}

// libstdc++/9548 and DR 231
void test06()
{
  using namespace std;
  bool test = true;

  const locale loc_c = locale::classic();

  ostringstream oss1, oss2;
  oss1.imbue(loc_c);
  oss2.imbue(loc_c);
  const num_put<char>& np1 = use_facet<num_put<char> >(oss1.getloc());
  const num_put<char>& np2 = use_facet<num_put<char> >(oss2.getloc());

  string result1, result2;

  oss1.precision(-1);
  oss1.setf(ios_base::fixed, ios_base::floatfield);
  np1.put(oss1.rdbuf(), oss1, '+', 30.5);
  result1 = oss1.str();
  VERIFY( result1 == "30.500000" );

  oss2.precision(0);
  oss2.setf(ios_base::scientific, ios_base::floatfield);
  np2.put(oss2.rdbuf(), oss2, '+', 1.0);
  result2 = oss2.str();
  VERIFY( result2 == "1e+00" );
}

int main()
{
  test01();
  test02();
  test03();
  test04();
  test05();
  test06();
  return 0;
}