libstdc++-v3/src/ctype.cc

   1 // Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2004, 2005,
   2 // 2006, 2007, 2008, 2009
   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 #include <cstdlib>
  27 #include <cstring>
  28
  29 _GLIBCXX_BEGIN_NAMESPACE(std)
  30
  31   // Definitions for static const data members of ctype_base.
  32   const ctype_base::mask ctype_base::space;
  33   const ctype_base::mask ctype_base::print;
  34   const ctype_base::mask ctype_base::cntrl;
  35   const ctype_base::mask ctype_base::upper;
  36   const ctype_base::mask ctype_base::lower;
  37   const ctype_base::mask ctype_base::alpha;
  38   const ctype_base::mask ctype_base::digit;
  39   const ctype_base::mask ctype_base::punct;
  40   const ctype_base::mask ctype_base::xdigit;
  41   const ctype_base::mask ctype_base::alnum;
  42   const ctype_base::mask ctype_base::graph;
  43
  44   // Definitions for locale::id of standard facets that are specialized.
  45   locale::id ctype<char>::id;
  46
  47 #ifdef _GLIBCXX_USE_WCHAR_T
  48   locale::id ctype<wchar_t>::id;
  49 #endif
  50
  51   // XXX At some point, just rename this file to ctype_configure_char.cc
  52   // and compile it as a separate file instead of including it here.
  53   // Platform-specific initialization code for ctype tables.
  54 #include <bits/ctype_noninline.h>
  55
  56   const size_t ctype<char>::table_size;
  57
  58   ctype<char>::~ctype()
  59   {
  60     _S_destroy_c_locale(_M_c_locale_ctype);
  61     if (_M_del)
  62       delete[] this->table();
  63   }
  64
  65   // Fill in the narrowing cache and flag whether all values are
  66   // valid or not.  _M_narrow_ok is set to 2 if memcpy can't
  67   // be used.
  68   void
  69   ctype<char>::
  70   _M_narrow_init() const
  71   {
  72     char __tmp[sizeof(_M_narrow)];
  73     for (size_t __i = 0; __i < sizeof(_M_narrow); ++__i)
  74       __tmp[__i] = __i;
  75     do_narrow(__tmp, __tmp + sizeof(__tmp), 0, _M_narrow);
  76
  77     _M_narrow_ok = 1;
  78     if (__builtin_memcmp(__tmp, _M_narrow, sizeof(_M_narrow)))
  79       _M_narrow_ok = 2;
  80     else
  81       {
  82         // Deal with the special case of zero: renarrow with a
  83         // different default and compare.
  84         char __c;
  85         do_narrow(__tmp, __tmp + 1, 1, &__c);
  86         if (__c == 1)
  87           _M_narrow_ok = 2;
  88       }
  89   }
  90
  91   void
  92   ctype<char>::
  93   _M_widen_init() const
  94   {
  95     char __tmp[sizeof(_M_widen)];
  96     for (size_t __i = 0; __i < sizeof(_M_widen); ++__i)
  97       __tmp[__i] = __i;
  98     do_widen(__tmp, __tmp + sizeof(__tmp), _M_widen);
  99
 100     _M_widen_ok = 1;
 101     // Set _M_widen_ok to 2 if memcpy can't be used.
 102     if (__builtin_memcmp(__tmp, _M_widen, sizeof(_M_widen)))
 103       _M_widen_ok = 2;
 104   }
 105
 106 #ifdef _GLIBCXX_USE_WCHAR_T
 107   ctype<wchar_t>::ctype(size_t __refs)
 108   : __ctype_abstract_base<wchar_t>(__refs),
 109   _M_c_locale_ctype(_S_get_c_locale()), _M_narrow_ok(false)
 110   { _M_initialize_ctype(); }
 111
 112   ctype<wchar_t>::ctype(__c_locale __cloc, size_t __refs)
 113   : __ctype_abstract_base<wchar_t>(__refs),
 114   _M_c_locale_ctype(_S_clone_c_locale(__cloc)), _M_narrow_ok(false)
 115   { _M_initialize_ctype(); }
 116
 117   ctype<wchar_t>::~ctype()
 118   { _S_destroy_c_locale(_M_c_locale_ctype); }
 119
 120   ctype_byname<wchar_t>::ctype_byname(const char* __s, size_t __refs)
 121   : ctype<wchar_t>(__refs)
 122   {
 123     if (std::strcmp(__s, "C") != 0 && std::strcmp(__s, "POSIX") != 0)
 124       {
 125         this->_S_destroy_c_locale(this->_M_c_locale_ctype);
 126         this->_S_create_c_locale(this->_M_c_locale_ctype, __s);
 127         this->_M_initialize_ctype();
 128       }
 129   }
 130
 131   ctype_byname<wchar_t>::~ctype_byname()
 132   { }
 133
 134 #endif
 135
 136 _GLIBCXX_END_NAMESPACE