libstdc++-v3/config/locale/darwin/ctype_members.cc

   1 // std::ctype implementation details, GNU version -*- C++ -*-
   2
   3 // Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
   4 // Free Software Foundation, Inc.
   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 2, 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 COPYING.  If not, write to the Free
  19 // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
  20 // USA.
  21
  22 // As a special exception, you may use this file as part of a free software
  23 // library without restriction.  Specifically, if other files instantiate
  24 // templates or use macros or inline functions from this file, or you compile
  25 // this file and link it with other files to produce an executable, this
  26 // file does not by itself cause the resulting executable to be covered by
  27 // the GNU General Public License.  This exception does not however
  28 // invalidate any other reasons why the executable file might be covered by
  29 // the GNU General Public License.
  30
  31 //
  32 // ISO C++ 14882: 22.2.1.1.2  ctype virtual functions.
  33 //
  34
  35 // Written by Benjamin Kosnik <bkoz@redhat.com>
  36
  37 #include <locale>
  38 #include <bits/c++locale_internal.h>
  39 #include <cstdlib>
  40 #include <cstring>
  41
  42 namespace std
  43 {
  44   // NB: The other ctype<char> specializations are in src/locale.cc and
  45   // various /config/os/* files.
  46
  47   ctype_byname<char>::ctype_byname(const char* __s, size_t __refs)
  48   : ctype<char>(0, false, __refs)
  49   {
  50     if (std::strcmp(__s, "C") != 0 && std::strcmp(__s, "POSIX") != 0)
  51       {
  52         this->_S_destroy_c_locale(this->_M_c_locale_ctype);
  53         this->_S_create_c_locale(this->_M_c_locale_ctype, __s);
  54       }
  55   }
  56
  57   ctype_byname<char>::~ctype_byname()
  58   { }
  59
  60 #ifdef _GLIBCXX_USE_WCHAR_T
  61   ctype<wchar_t>::__wmask_type
  62   ctype<wchar_t>::_M_convert_to_wmask(const mask __m) const
  63   {
  64     // Darwin uses the same codes for 'char' as 'wchar_t', so this routine
  65     // never gets called.
  66     return __m;
  67   };
  68
  69   wchar_t
  70   ctype<wchar_t>::do_toupper(wchar_t __c) const
  71   { return towupper(__c); }
  72
  73   const wchar_t*
  74   ctype<wchar_t>::do_toupper(wchar_t* __lo, const wchar_t* __hi) const
  75   {
  76     while (__lo < __hi)
  77       {
  78         *__lo = towupper(*__lo);
  79         ++__lo;
  80       }
  81     return __hi;
  82   }
  83
  84   wchar_t
  85   ctype<wchar_t>::do_tolower(wchar_t __c) const
  86   { return towlower(__c); }
  87
  88   const wchar_t*
  89   ctype<wchar_t>::do_tolower(wchar_t* __lo, const wchar_t* __hi) const
  90   {
  91     while (__lo < __hi)
  92       {
  93         *__lo = towlower(*__lo);
  94         ++__lo;
  95       }
  96     return __hi;
  97   }
  98
  99   wchar_t
 100   ctype<wchar_t>::
 101   do_widen(char __c) const
 102   { return _M_widen[static_cast<unsigned char>(__c)]; }
 103
 104   const char*
 105   ctype<wchar_t>::
 106   do_widen(const char* __lo, const char* __hi, wchar_t* __dest) const
 107   {
 108     while (__lo < __hi)
 109       {
 110         *__dest = _M_widen[static_cast<unsigned char>(*__lo)];
 111         ++__lo;
 112         ++__dest;
 113       }
 114     return __hi;
 115   }
 116
 117   char
 118   ctype<wchar_t>::
 119   do_narrow(wchar_t __wc, char __dfault) const
 120   {
 121     if (__wc >= 0 && __wc < 128 && _M_narrow_ok)
 122       return _M_narrow[__wc];
 123     const int __c = wctob(__wc);
 124     return (__c == EOF ? __dfault : static_cast<char>(__c));
 125   }
 126
 127   const wchar_t*
 128   ctype<wchar_t>::
 129   do_narrow(const wchar_t* __lo, const wchar_t* __hi, char __dfault,
 130             char* __dest) const
 131   {
 132     if (_M_narrow_ok)
 133       while (__lo < __hi)
 134         {
 135           if (*__lo >= 0 && *__lo < 128)
 136             *__dest = _M_narrow[*__lo];
 137           else
 138             {
 139               const int __c = wctob(*__lo);
 140               *__dest = (__c == EOF ? __dfault : static_cast<char>(__c));
 141             }
 142           ++__lo;
 143           ++__dest;
 144         }
 145     else
 146       while (__lo < __hi)
 147         {
 148           const int __c = wctob(*__lo);
 149           *__dest = (__c == EOF ? __dfault : static_cast<char>(__c));
 150           ++__lo;
 151           ++__dest;
 152         }
 153     return __hi;
 154   }
 155
 156   void
 157   ctype<wchar_t>::_M_initialize_ctype()
 158   {
 159     wint_t __i;
 160     for (__i = 0; __i < 128; ++__i)
 161       {
 162         const int __c = wctob(__i);
 163         if (__c == EOF)
 164           break;
 165         else
 166           _M_narrow[__i] = static_cast<char>(__c);
 167       }
 168     if (__i == 128)
 169       _M_narrow_ok = true;
 170     else
 171       _M_narrow_ok = false;
 172     for (size_t __i = 0;
 173          __i < sizeof(_M_widen) / sizeof(wint_t); ++__i)
 174       _M_widen[__i] = btowc(__i);
 175   }
 176 #endif //  _GLIBCXX_USE_WCHAR_T
 177 }