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

   1 // std::ctype implementation details, GNU version -*- C++ -*-
   2
   3 // Copyright (C) 2001-2020 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 //
  26 // ISO C++ 14882: 22.2.1.1.2  ctype virtual functions.
  27 //
  28
  29 // Written by Benjamin Kosnik <bkoz@redhat.com>
  30
  31 #include <locale>
  32 #include <bits/c++locale_internal.h>
  33 #include <cstdlib>
  34 #include <cstring>
  35 #include <cstdio>
  36
  37 namespace std _GLIBCXX_VISIBILITY(default)
  38 {
  39   // NB: The other ctype<char> specializations are in src/locale.cc and
  40   // various /config/os/* files.
  41
  42   ctype_byname<char>::ctype_byname(const char* __s, size_t __refs)
  43   : ctype<char>(0, false, __refs)
  44   {
  45     if (std::strcmp(__s, "C") != 0 && std::strcmp(__s, "POSIX") != 0)
  46       {
  47         this->_S_destroy_c_locale(this->_M_c_locale_ctype);
  48         this->_S_create_c_locale(this->_M_c_locale_ctype, __s);
  49       }
  50   }
  51
  52   ctype_byname<char>::~ctype_byname()
  53   { }
  54
  55 #ifdef _GLIBCXX_USE_WCHAR_T
  56   ctype<wchar_t>::__wmask_type
  57   ctype<wchar_t>::_M_convert_to_wmask(const mask __m) const throw()
  58   {
  59     // Darwin uses the same codes for 'char' as 'wchar_t', so this routine
  60     // never gets called.
  61     return __m;
  62   };
  63
  64   wchar_t
  65   ctype<wchar_t>::do_toupper(wchar_t __c) const
  66   { return towupper(__c); }
  67
  68   const wchar_t*
  69   ctype<wchar_t>::do_toupper(wchar_t* __lo, const wchar_t* __hi) const
  70   {
  71     while (__lo < __hi)
  72       {
  73         *__lo = towupper(*__lo);
  74         ++__lo;
  75       }
  76     return __hi;
  77   }
  78
  79   wchar_t
  80   ctype<wchar_t>::do_tolower(wchar_t __c) const
  81   { return towlower(__c); }
  82
  83   const wchar_t*
  84   ctype<wchar_t>::do_tolower(wchar_t* __lo, const wchar_t* __hi) const
  85   {
  86     while (__lo < __hi)
  87       {
  88         *__lo = towlower(*__lo);
  89         ++__lo;
  90       }
  91     return __hi;
  92   }
  93
  94   wchar_t
  95   ctype<wchar_t>::
  96   do_widen(char __c) const
  97   { return _M_widen[static_cast<unsigned char>(__c)]; }
  98
  99   const char*
 100   ctype<wchar_t>::
 101   do_widen(const char* __lo, const char* __hi, wchar_t* __dest) const
 102   {
 103     while (__lo < __hi)
 104       {
 105         *__dest = _M_widen[static_cast<unsigned char>(*__lo)];
 106         ++__lo;
 107         ++__dest;
 108       }
 109     return __hi;
 110   }
 111
 112   char
 113   ctype<wchar_t>::
 114   do_narrow(wchar_t __wc, char __dfault) const
 115   {
 116     if (__wc >= 0 && __wc < 128 && _M_narrow_ok)
 117       return _M_narrow[__wc];
 118     const int __c = wctob(__wc);
 119     return (__c == EOF ? __dfault : static_cast<char>(__c));
 120   }
 121
 122   const wchar_t*
 123   ctype<wchar_t>::
 124   do_narrow(const wchar_t* __lo, const wchar_t* __hi, char __dfault,
 125             char* __dest) const
 126   {
 127     if (_M_narrow_ok)
 128       while (__lo < __hi)
 129         {
 130           if (*__lo >= 0 && *__lo < 128)
 131             *__dest = _M_narrow[*__lo];
 132           else
 133             {
 134               const int __c = wctob(*__lo);
 135               *__dest = (__c == EOF ? __dfault : static_cast<char>(__c));
 136             }
 137           ++__lo;
 138           ++__dest;
 139         }
 140     else
 141       while (__lo < __hi)
 142         {
 143           const int __c = wctob(*__lo);
 144           *__dest = (__c == EOF ? __dfault : static_cast<char>(__c));
 145           ++__lo;
 146           ++__dest;
 147         }
 148     return __hi;
 149   }
 150
 151   void
 152   ctype<wchar_t>::_M_initialize_ctype() throw()
 153   {
 154     wint_t __i;
 155     for (__i = 0; __i < 128; ++__i)
 156       {
 157         const int __c = wctob(__i);
 158         if (__c == EOF)
 159           break;
 160         else
 161           _M_narrow[__i] = static_cast<char>(__c);
 162       }
 163     if (__i == 128)
 164       _M_narrow_ok = true;
 165     else
 166       _M_narrow_ok = false;
 167     for (size_t __i = 0;
 168          __i < sizeof(_M_widen) / sizeof(wint_t); ++__i)
 169       _M_widen[__i] = btowc(__i);
 170   }
 171 #endif //  _GLIBCXX_USE_WCHAR_T
 172 }