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

   1 // std::ctype implementation details, vxworks specific version -*- C++ -*-
   2
   3 // Copyright (C) 2001-2022 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 #include <iostream>
  37
  38 namespace std _GLIBCXX_VISIBILITY(default)
  39 {
  40 _GLIBCXX_BEGIN_NAMESPACE_VERSION
  41
  42   // NB: The other ctype<char> specializations are in src/locale.cc and
  43   // various /config/os/* files.
  44   ctype_byname<char>::ctype_byname(const char* __s, size_t __refs)
  45   : ctype<char>(0, false, __refs)
  46   {
  47     if (std::strcmp(__s, "C") != 0 && std::strcmp(__s, "POSIX") != 0)
  48       {
  49         this->_S_destroy_c_locale(this->_M_c_locale_ctype);
  50         this->_S_create_c_locale(this->_M_c_locale_ctype, __s);
  51       }
  52   }
  53
  54   ctype_byname<char>::~ctype_byname()
  55   { }
  56
  57 #ifdef _GLIBCXX_USE_WCHAR_T
  58   ctype<wchar_t>::__wmask_type
  59   ctype<wchar_t>::_M_convert_to_wmask(const mask __m) const throw()
  60   {
  61     __wmask_type __ret;
  62
  63     switch (__m)
  64       {
  65       case space:
  66         __ret = wctype("space");
  67         break;
  68       case print:
  69         __ret = wctype("print");
  70         break;
  71       case cntrl:
  72         __ret = wctype("cntrl");
  73         break;
  74       case upper:
  75         __ret = wctype("upper");
  76         break;
  77       case lower:
  78         __ret = wctype("lower");
  79         break;
  80       case alpha:
  81         __ret = wctype("alpha");
  82         break;
  83       case digit:
  84         __ret = wctype("digit");
  85         break;
  86       case punct:
  87         __ret = wctype("punct");
  88         break;
  89       case xdigit:
  90         __ret = wctype("xdigit");
  91         break;
  92       case alnum:
  93         __ret = wctype("alnum");
  94         break;
  95       case graph:
  96         __ret = wctype("graph");
  97         break;
  98       default:
  99           __ret = __wmask_type();
 100           break;
 101       }
 102     return __ret;
 103   };
 104
 105   wchar_t
 106   ctype<wchar_t>::do_toupper(wchar_t __c) const
 107   { return towupper(__c); }
 108
 109   const wchar_t*
 110   ctype<wchar_t>::do_toupper(wchar_t* __lo, const wchar_t* __hi) const
 111   {
 112     while (__lo < __hi)
 113       {
 114         *__lo = towupper(*__lo);
 115         ++__lo;
 116       }
 117     return __hi;
 118   }
 119
 120   wchar_t
 121   ctype<wchar_t>::do_tolower(wchar_t __c) const
 122   { return towlower(__c); }
 123
 124   const wchar_t*
 125   ctype<wchar_t>::do_tolower(wchar_t* __lo, const wchar_t* __hi) const
 126   {
 127     while (__lo < __hi)
 128       {
 129         *__lo = towlower(*__lo);
 130         ++__lo;
 131       }
 132     return __hi;
 133   }
 134
 135   bool
 136   ctype<wchar_t>::
 137   do_is(mask __m, char_type __c) const
 138   {
 139     bool __ret = false;
 140     // In VxWorks, a ctype is a short int, thus if we go up to the 15th index,
 141     // we will overflow.
 142     const size_t __bitmasksize = 14;
 143
 144     // VxWorks does not consider spaces to be blank, however, the testsuite
 145     // and more generally the libstdc++ rely on it, we explicitly handle
 146     // that case here.
 147     if ((__m & blank) && isspace(__c))
 148       {
 149         __ret = true;
 150       }
 151     else
 152       {
 153         for (size_t __bitcur = 0; __bitcur <= __bitmasksize; ++__bitcur) {
 154           if (__m & _M_bit[__bitcur]
 155               && iswctype(__c, _M_wmask[__bitcur]))
 156             {
 157               __ret = true;
 158               break;
 159             }
 160         }
 161       }
 162     return __ret;
 163   }
 164
 165   const wchar_t*
 166   ctype<wchar_t>::
 167   do_is(const wchar_t* __lo, const wchar_t* __hi, mask* __vec) const
 168   {
 169     for (;__lo < __hi; ++__vec, ++__lo)
 170       {
 171         const size_t __bitmasksize = 14;
 172         // In VxWorks, a ctype is a short int, thus if we go up to the 15th index,
 173         // we will overflow.
 174         mask __m = 0;
 175         // VxWorks does not consider space as blank, so let's add an explicit
 176         // check.
 177         if (isspace(*__lo))
 178           __m |= blank;
 179         for (size_t __bitcur = 0; __bitcur <= __bitmasksize; ++__bitcur)
 180           if (iswctype(*__lo, _M_wmask[__bitcur]))
 181             __m |= _M_bit[__bitcur];
 182         *__vec = __m;
 183       }
 184     return __hi;
 185   }
 186
 187   const wchar_t*
 188   ctype<wchar_t>::
 189   do_scan_is(mask __m, const wchar_t* __lo, const wchar_t* __hi) const
 190   {
 191     while (__lo < __hi && !this->do_is(__m, *__lo))
 192       ++__lo;
 193     return __lo;
 194   }
 195
 196   const wchar_t*
 197   ctype<wchar_t>::
 198   do_scan_not(mask __m, const char_type* __lo, const char_type* __hi) const
 199   {
 200     while (__lo < __hi && this->do_is(__m, *__lo) != 0)
 201       ++__lo;
 202     return __lo;
 203   }
 204
 205   wchar_t
 206   ctype<wchar_t>::
 207   do_widen(char __c) const
 208   { return _M_widen[static_cast<unsigned char>(__c)]; }
 209
 210   const char*
 211   ctype<wchar_t>::
 212   do_widen(const char* __lo, const char* __hi, wchar_t* __dest) const
 213   {
 214     while (__lo < __hi)
 215       {
 216         *__dest = _M_widen[static_cast<unsigned char>(*__lo)];
 217         ++__lo;
 218         ++__dest;
 219       }
 220     return __hi;
 221   }
 222
 223   char
 224   ctype<wchar_t>::
 225   do_narrow(wchar_t __wc, char __dfault) const
 226   {
 227     if (__wc >= 0 && __wc < 128 && _M_narrow_ok)
 228       return _M_narrow[__wc];
 229     const int __c = wctob(__wc);
 230     return (__c == EOF ? __dfault : static_cast<char>(__c));
 231   }
 232
 233   const wchar_t*
 234   ctype<wchar_t>::
 235   do_narrow(const wchar_t* __lo, const wchar_t* __hi, char __dfault,
 236             char* __dest) const
 237   {
 238     if (_M_narrow_ok)
 239       while (__lo < __hi)
 240         {
 241           if (*__lo >= 0 && *__lo < 128)
 242             *__dest = _M_narrow[*__lo];
 243           else
 244             {
 245               const int __c = wctob(*__lo);
 246               *__dest = (__c == EOF ? __dfault : static_cast<char>(__c));
 247             }
 248           ++__lo;
 249           ++__dest;
 250         }
 251     else
 252       while (__lo < __hi)
 253         {
 254           const int __c = wctob(*__lo);
 255           *__dest = (__c == EOF ? __dfault : static_cast<char>(__c));
 256           ++__lo;
 257           ++__dest;
 258         }
 259     return __hi;
 260   }
 261
 262   void
 263   ctype<wchar_t>::_M_initialize_ctype() throw()
 264   {
 265     wint_t __i;
 266     for (__i = 0; __i < 128; ++__i)
 267       {
 268         const int __c = wctob(__i);
 269         if (__c == EOF)
 270           break;
 271         else
 272           _M_narrow[__i] = static_cast<char>(__c);
 273       }
 274     if (__i == 128)
 275       _M_narrow_ok = true;
 276     else
 277       _M_narrow_ok = false;
 278     for (size_t __i = 0;
 279          __i < sizeof(_M_widen) / sizeof(wint_t); ++__i)
 280       _M_widen[__i] = btowc(__i);
 281
 282     // In VxWorks, a ctype is a short int, thus if we go up to the 15th index,
 283     // we will overflow.
 284     for (size_t __i = 0; __i <= 14; ++__i)
 285       {
 286         _M_bit[__i] = static_cast<mask>(1 << __i);
 287         _M_wmask[__i] = _M_convert_to_wmask(_M_bit[__i]);
 288       }
 289   }
 290 #endif //  _GLIBCXX_USE_WCHAR_T
 291 _GLIBCXX_END_NAMESPACE_VERSION
 292 } // namespace