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

   1 // std::ctype implementation details, vxworks specific version -*- C++ -*-
   2
   3 // Copyright (C) 2001-2024 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 // Originally written by Benjamin Kosnik <bkoz@redhat.com>.
  30 // Ported to vxworks by Corentin Gay <gay@adacore.com>.
  31
  32 #include <locale>
  33 #include <cstdlib>
  34 #include <cstring>
  35 #include <cstdio>
  36
  37 namespace std _GLIBCXX_VISIBILITY(default)
  38 {
  39 _GLIBCXX_BEGIN_NAMESPACE_VERSION
  40
  41   // NB: The other ctype<char> specializations are in src/locale.cc and
  42   // various /config/os/* files.
  43   ctype_byname<char>::ctype_byname(const char* __s, size_t __refs)
  44   : ctype<char>(0, false, __refs)
  45   {
  46     if (std::strcmp(__s, "C") != 0 && std::strcmp(__s, "POSIX") != 0)
  47       {
  48         this->_S_destroy_c_locale(this->_M_c_locale_ctype);
  49         this->_S_create_c_locale(this->_M_c_locale_ctype, __s);
  50       }
  51   }
  52
  53   ctype_byname<char>::~ctype_byname()
  54   { }
  55
  56 #ifdef _GLIBCXX_USE_WCHAR_T
  57   ctype<wchar_t>::__wmask_type
  58   ctype<wchar_t>::_M_convert_to_wmask(const mask __m) const throw()
  59   {
  60     __wmask_type __ret;
  61
  62     switch (__m)
  63       {
  64       case space:
  65         __ret = wctype("space");
  66         break;
  67       case print:
  68         __ret = wctype("print");
  69         break;
  70       case cntrl:
  71         __ret = wctype("cntrl");
  72         break;
  73       case upper:
  74         __ret = wctype("upper");
  75         break;
  76       case lower:
  77         __ret = wctype("lower");
  78         break;
  79       case alpha:
  80         __ret = wctype("alpha");
  81         break;
  82       case digit:
  83         __ret = wctype("digit");
  84         break;
  85       case punct:
  86         __ret = wctype("punct");
  87         break;
  88       case xdigit:
  89         __ret = wctype("xdigit");
  90         break;
  91       case alnum:
  92         __ret = wctype("alnum");
  93         break;
  94       case graph:
  95         __ret = wctype("graph");
  96         break;
  97       default:
  98           __ret = __wmask_type();
  99           break;
 100       }
 101     return __ret;
 102   };
 103
 104   wchar_t
 105   ctype<wchar_t>::do_toupper(wchar_t __c) const
 106   { return towupper(__c); }
 107
 108   const wchar_t*
 109   ctype<wchar_t>::do_toupper(wchar_t* __lo, const wchar_t* __hi) const
 110   {
 111     while (__lo < __hi)
 112       {
 113         *__lo = towupper(*__lo);
 114         ++__lo;
 115       }
 116     return __hi;
 117   }
 118
 119   wchar_t
 120   ctype<wchar_t>::do_tolower(wchar_t __c) const
 121   { return towlower(__c); }
 122
 123   const wchar_t*
 124   ctype<wchar_t>::do_tolower(wchar_t* __lo, const wchar_t* __hi) const
 125   {
 126     while (__lo < __hi)
 127       {
 128         *__lo = towlower(*__lo);
 129         ++__lo;
 130       }
 131     return __hi;
 132   }
 133
 134   bool
 135   ctype<wchar_t>::
 136   do_is(mask __m, char_type __c) const
 137   {
 138     bool __ret = false;
 139     // In VxWorks, a ctype is a short int, thus if we go up to the 15th index,
 140     // we will overflow.
 141     const size_t __bitmasksize = 14;
 142
 143     // VxWorks does not consider spaces to be blank, however, the testsuite
 144     // and more generally the libstdc++ rely on it, we explicitly handle
 145     // that case here.
 146     if ((__m & blank) && isspace(__c))
 147       {
 148         __ret = true;
 149       }
 150     else
 151       {
 152         for (size_t __bitcur = 0; __bitcur <= __bitmasksize; ++__bitcur) {
 153           if (__m & _M_bit[__bitcur]
 154               && iswctype(__c, _M_wmask[__bitcur]))
 155             {
 156               __ret = true;
 157               break;
 158             }
 159         }
 160       }
 161     return __ret;
 162   }
 163
 164   const wchar_t*
 165   ctype<wchar_t>::
 166   do_is(const wchar_t* __lo, const wchar_t* __hi, mask* __vec) const
 167   {
 168     for (;__lo < __hi; ++__vec, ++__lo)
 169       {
 170         const size_t __bitmasksize = 14;
 171         // In VxWorks, a ctype is a short int, thus if we go up to the 15th index,
 172         // we will overflow.
 173         mask __m = 0;
 174         // VxWorks does not consider space as blank, so let's add an explicit
 175         // check.
 176         if (isspace(*__lo))
 177           __m |= blank;
 178         for (size_t __bitcur = 0; __bitcur <= __bitmasksize; ++__bitcur)
 179           if (iswctype(*__lo, _M_wmask[__bitcur]))
 180             __m |= _M_bit[__bitcur];
 181         *__vec = __m;
 182       }
 183     return __hi;
 184   }
 185
 186   const wchar_t*
 187   ctype<wchar_t>::
 188   do_scan_is(mask __m, const wchar_t* __lo, const wchar_t* __hi) const
 189   {
 190     while (__lo < __hi && !this->do_is(__m, *__lo))
 191       ++__lo;
 192     return __lo;
 193   }
 194
 195   const wchar_t*
 196   ctype<wchar_t>::
 197   do_scan_not(mask __m, const char_type* __lo, const char_type* __hi) const
 198   {
 199     while (__lo < __hi && this->do_is(__m, *__lo) != 0)
 200       ++__lo;
 201     return __lo;
 202   }
 203
 204   wchar_t
 205   ctype<wchar_t>::
 206   do_widen(char __c) const
 207   { return _M_widen[static_cast<unsigned char>(__c)]; }
 208
 209   const char*
 210   ctype<wchar_t>::
 211   do_widen(const char* __lo, const char* __hi, wchar_t* __dest) const
 212   {
 213     while (__lo < __hi)
 214       {
 215         *__dest = _M_widen[static_cast<unsigned char>(*__lo)];
 216         ++__lo;
 217         ++__dest;
 218       }
 219     return __hi;
 220   }
 221
 222   char
 223   ctype<wchar_t>::
 224   do_narrow(wchar_t __wc, char __dfault) const
 225   {
 226     if (__wc >= 0 && __wc < 128 && _M_narrow_ok)
 227       return _M_narrow[__wc];
 228     const int __c = wctob(__wc);
 229     return (__c == EOF ? __dfault : static_cast<char>(__c));
 230   }
 231
 232   const wchar_t*
 233   ctype<wchar_t>::
 234   do_narrow(const wchar_t* __lo, const wchar_t* __hi, char __dfault,
 235             char* __dest) const
 236   {
 237     if (_M_narrow_ok)
 238       while (__lo < __hi)
 239         {
 240           if (*__lo >= 0 && *__lo < 128)
 241             *__dest = _M_narrow[*__lo];
 242           else
 243             {
 244               const int __c = wctob(*__lo);
 245               *__dest = (__c == EOF ? __dfault : static_cast<char>(__c));
 246             }
 247           ++__lo;
 248           ++__dest;
 249         }
 250     else
 251       while (__lo < __hi)
 252         {
 253           const int __c = wctob(*__lo);
 254           *__dest = (__c == EOF ? __dfault : static_cast<char>(__c));
 255           ++__lo;
 256           ++__dest;
 257         }
 258     return __hi;
 259   }
 260
 261   void
 262   ctype<wchar_t>::_M_initialize_ctype() throw()
 263   {
 264     wint_t __i;
 265     for (__i = 0; __i < 128; ++__i)
 266       {
 267         const int __c = wctob(__i);
 268         if (__c == EOF)
 269           break;
 270         else
 271           _M_narrow[__i] = static_cast<char>(__c);
 272       }
 273     if (__i == 128)
 274       _M_narrow_ok = true;
 275     else
 276       _M_narrow_ok = false;
 277     for (size_t __i = 0;
 278          __i < sizeof(_M_widen) / sizeof(wint_t); ++__i)
 279       _M_widen[__i] = btowc(__i);
 280
 281     // In VxWorks, a ctype is a short int, thus if we go up to the 15th index,
 282     // we will overflow.
 283     for (size_t __i = 0; __i <= 14; ++__i)
 284       {
 285         _M_bit[__i] = static_cast<mask>(1 << __i);
 286         _M_wmask[__i] = _M_convert_to_wmask(_M_bit[__i]);
 287       }
 288   }
 289 #endif //  _GLIBCXX_USE_WCHAR_T
 290 _GLIBCXX_END_NAMESPACE_VERSION
 291 } // namespace