libstdc++-v3/src/locale_facets.cc

   1 // Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
   2 // 2006, 2007, 2008, 2009, 2010
   3 // Free Software Foundation, Inc.
   4 //
   5 // This file is part of the GNU ISO C++ Library.  This library is free
   6 // software; you can redistribute it and/or modify it under the
   7 // terms of the GNU General Public License as published by the
   8 // Free Software Foundation; either version 3, or (at your option)
   9 // any later version.
  10
  11 // This library is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 // GNU General Public License for more details.
  15
  16 // Under Section 7 of GPL version 3, you are granted additional
  17 // permissions described in the GCC Runtime Library Exception, version
  18 // 3.1, as published by the Free Software Foundation.
  19
  20 // You should have received a copy of the GNU General Public License and
  21 // a copy of the GCC Runtime Library Exception along with this program;
  22 // see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
  23 // <http://www.gnu.org/licenses/>.
  24
  25 #include <locale>
  26
  27 namespace std _GLIBCXX_VISIBILITY(default)
  28 {
  29 _GLIBCXX_BEGIN_NAMESPACE_VERSION
  30
  31   // Definitions for static const data members of time_base.
  32   template<>
  33     const char*
  34     __timepunct_cache<char>::_S_timezones[14] =
  35     {
  36       "GMT", "HST", "AKST", "PST", "MST", "CST", "EST", "AST", "NST", "CET",
  37       "IST", "EET", "CST", "JST"
  38     };
  39
  40 #ifdef _GLIBCXX_USE_WCHAR_T
  41   template<>
  42     const wchar_t*
  43     __timepunct_cache<wchar_t>::_S_timezones[14] =
  44     {
  45       L"GMT", L"HST", L"AKST", L"PST", L"MST", L"CST", L"EST", L"AST",
  46       L"NST", L"CET", L"IST", L"EET", L"CST", L"JST"
  47     };
  48 #endif
  49
  50   // Definitions for static const data members of money_base.
  51   const money_base::pattern
  52   money_base::_S_default_pattern =  { {symbol, sign, none, value} };
  53
  54   const char* money_base::_S_atoms = "-0123456789";
  55
  56   const char* __num_base::_S_atoms_in = "-+xX0123456789abcdefABCDEF";
  57   const char* __num_base::_S_atoms_out ="-+xX0123456789abcdef0123456789ABCDEF";
  58
  59   // _GLIBCXX_RESOLVE_LIB_DEFECTS
  60   // According to the resolution of DR 231, about 22.2.2.2.2, p11,
  61   // "str.precision() is specified in the conversion specification".
  62   void
  63   __num_base::_S_format_float(const ios_base& __io, char* __fptr,
  64                               char __mod) throw()
  65   {
  66     ios_base::fmtflags __flags = __io.flags();
  67     *__fptr++ = '%';
  68     // [22.2.2.2.2] Table 60
  69     if (__flags & ios_base::showpos)
  70       *__fptr++ = '+';
  71     if (__flags & ios_base::showpoint)
  72       *__fptr++ = '#';
  73
  74     // As per DR 231: _always_, not only when
  75     // __flags & ios_base::fixed || __prec > 0
  76     *__fptr++ = '.';
  77     *__fptr++ = '*';
  78
  79     if (__mod)
  80       *__fptr++ = __mod;
  81     ios_base::fmtflags __fltfield = __flags & ios_base::floatfield;
  82     // [22.2.2.2.2] Table 58
  83     if (__fltfield == ios_base::fixed)
  84       *__fptr++ = 'f';
  85     else if (__fltfield == ios_base::scientific)
  86       *__fptr++ = (__flags & ios_base::uppercase) ? 'E' : 'e';
  87     else
  88       *__fptr++ = (__flags & ios_base::uppercase) ? 'G' : 'g';
  89     *__fptr = '\0';
  90   }
  91
  92   bool
  93   __verify_grouping(const char* __grouping, size_t __grouping_size,
  94                     const string& __grouping_tmp) throw()
  95   {
  96     const size_t __n = __grouping_tmp.size() - 1;
  97     const size_t __min = std::min(__n, size_t(__grouping_size - 1));
  98     size_t __i = __n;
  99     bool __test = true;
 100
 101     // Parsed number groupings have to match the
 102     // numpunct::grouping string exactly, starting at the
 103     // right-most point of the parsed sequence of elements ...
 104     for (size_t __j = 0; __j < __min && __test; --__i, ++__j)
 105       __test = __grouping_tmp[__i] == __grouping[__j];
 106     for (; __i && __test; --__i)
 107       __test = __grouping_tmp[__i] == __grouping[__min];
 108     // ... but the first parsed grouping can be <= numpunct
 109     // grouping (only do the check if the numpunct char is > 0
 110     // because <= 0 means any size is ok).
 111     if (static_cast<signed char>(__grouping[__min]) > 0
 112         && __grouping[__min] != __gnu_cxx::__numeric_traits<char>::__max)
 113       __test &= __grouping_tmp[0] <= __grouping[__min];
 114     return __test;
 115   }
 116
 117 _GLIBCXX_END_NAMESPACE_VERSION
 118 } // namespace