libstdc++-v3/config/newlib/ctype.cc

   1 // Locale support -*- C++ -*-
   2
   3 // Copyright (C) 2000 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 2, 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 // You should have received a copy of the GNU General Public License along
  17 // with this library; see the file COPYING.  If not, write to the Free
  18 // Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
  19 // USA.
  20
  21 // As a special exception, you may use this file as part of a free software
  22 // library without restriction.  Specifically, if other files instantiate
  23 // templates or use macros or inline functions from this file, or you compile
  24 // this file and link it with other files to produce an executable, this
  25 // file does not by itself cause the resulting executable to be covered by
  26 // the GNU General Public License.  This exception does not however
  27 // invalidate any other reasons why the executable file might be covered by
  28 // the GNU General Public License.
  29
  30 //
  31 // ISO C++ 14882: 22.1  Locales
  32 //
  33
  34 // Information as gleaned from /usr/include/ctype.h
  35
  36   ctype<char>::ctype(const mask* __table = 0, bool __del = false,
  37         size_t __refs = 0) throw()
  38     : _Ctype_nois<char>(__refs), _M_del(__table != 0 && __del),
  39       _M_toupper(NULL), _M_tolower(NULL),
  40       _M_ctable(_ctype_), _M_table(__table == 0 ? _M_ctable: __table)
  41     { }
  42
  43   char
  44   ctype<char>::do_toupper(char __c) const
  45   {
  46     int __x = __c;
  47     return (this->is(ctype_base::upper, __c) ? (__x - 'A' + 'a') : __x);
  48   }
  49
  50   const char*
  51   ctype<char>::do_toupper(char* __low, const char* __high) const
  52   {
  53     while (__low < __high)
  54       {
  55         *__low = this->do_toupper(*__low);
  56         ++__low;
  57       }
  58     return __high;
  59   }
  60
  61   char
  62   ctype<char>::do_tolower(char __c) const
  63   {
  64     int __x = __c;
  65     return (this->is(ctype_base::lower, __c) ? (__x - 'A' + 'a') : __x);
  66   }
  67
  68   const char*
  69   ctype<char>::do_tolower(char* __low, const char* __high) const
  70   {
  71     while (__low < __high)
  72       {
  73         *__low = this->do_tolower(*__low);
  74         ++__low;
  75       }
  76     return __high;
  77   }
  78