libstdc++-v3/src/c++98/locale_facets.cc

   1 // Copyright (C) 1997-2014 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 3, 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 // Under Section 7 of GPL version 3, you are granted additional
  15 // permissions described in the GCC Runtime Library Exception, version
  16 // 3.1, as published by the Free Software Foundation.
  17
  18 // You should have received a copy of the GNU General Public License and
  19 // a copy of the GCC Runtime Library Exception along with this program;
  20 // see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
  21 // <http://www.gnu.org/licenses/>.
  22
  23 #include <locale>
  24
  25 namespace std _GLIBCXX_VISIBILITY(default)
  26 {
  27 _GLIBCXX_BEGIN_NAMESPACE_VERSION
  28
  29   // Definitions for static const data members of time_base.
  30   template<>
  31     const char*
  32     __timepunct_cache<char>::_S_timezones[14] =
  33     {
  34       "GMT", "HST", "AKST", "PST", "MST", "CST", "EST", "AST", "NST", "CET",
  35       "IST", "EET", "CST", "JST"
  36     };
  37
  38 #ifdef _GLIBCXX_USE_WCHAR_T
  39   template<>
  40     const wchar_t*
  41     __timepunct_cache<wchar_t>::_S_timezones[14] =
  42     {
  43       L"GMT", L"HST", L"AKST", L"PST", L"MST", L"CST", L"EST", L"AST",
  44       L"NST", L"CET", L"IST", L"EET", L"CST", L"JST"
  45     };
  46 #endif
  47
  48   // Definitions for static const data members of money_base.
  49   const money_base::pattern
  50   money_base::_S_default_pattern =  { {symbol, sign, none, value} };
  51
  52   const char* money_base::_S_atoms = "-0123456789";
  53
  54   const char* __num_base::_S_atoms_in = "-+xX0123456789abcdefABCDEF";
  55   const char* __num_base::_S_atoms_out ="-+xX0123456789abcdef0123456789ABCDEF";
  56
  57   // _GLIBCXX_RESOLVE_LIB_DEFECTS
  58   // According to the resolution of DR 231, about 22.2.2.2.2, p11,
  59   // "str.precision() is specified in the conversion specification".
  60   void
  61   __num_base::_S_format_float(const ios_base& __io, char* __fptr,
  62                               char __mod) throw()
  63   {
  64     ios_base::fmtflags __flags = __io.flags();
  65     *__fptr++ = '%';
  66     // [22.2.2.2.2] Table 60
  67     if (__flags & ios_base::showpos)
  68       *__fptr++ = '+';
  69     if (__flags & ios_base::showpoint)
  70       *__fptr++ = '#';
  71
  72     // As per DR 231: _always_, not only when
  73     // __flags & ios_base::fixed || __prec > 0
  74     *__fptr++ = '.';
  75     *__fptr++ = '*';
  76
  77     if (__mod)
  78       *__fptr++ = __mod;
  79     ios_base::fmtflags __fltfield = __flags & ios_base::floatfield;
  80     // [22.2.2.2.2] Table 58
  81     if (__fltfield == ios_base::fixed)
  82       *__fptr++ = 'f';
  83     else if (__fltfield == ios_base::scientific)
  84       *__fptr++ = (__flags & ios_base::uppercase) ? 'E' : 'e';
  85     else
  86       *__fptr++ = (__flags & ios_base::uppercase) ? 'G' : 'g';
  87     *__fptr = '\0';
  88   }
  89
  90   bool
  91   __verify_grouping(const char* __grouping, size_t __grouping_size,
  92                     const string& __grouping_tmp) throw()
  93   {
  94     const size_t __n = __grouping_tmp.size() - 1;
  95     const size_t __min = std::min(__n, size_t(__grouping_size - 1));
  96     size_t __i = __n;
  97     bool __test = true;
  98
  99     // Parsed number groupings have to match the
 100     // numpunct::grouping string exactly, starting at the
 101     // right-most point of the parsed sequence of elements ...
 102     for (size_t __j = 0; __j < __min && __test; --__i, ++__j)
 103       __test = __grouping_tmp[__i] == __grouping[__j];
 104     for (; __i && __test; --__i)
 105       __test = __grouping_tmp[__i] == __grouping[__min];
 106     // ... but the first parsed grouping can be <= numpunct
 107     // grouping (only do the check if the numpunct char is > 0
 108     // because <= 0 means any size is ok).
 109     if (static_cast<signed char>(__grouping[__min]) > 0
 110         && __grouping[__min] != __gnu_cxx::__numeric_traits<char>::__max)
 111       __test &= __grouping_tmp[0] <= __grouping[__min];
 112     return __test;
 113   }
 114
 115 _GLIBCXX_END_NAMESPACE_VERSION
 116 } // namespace