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      1 // -*- C++ -*- forwarding header.
      2 
      3 // Copyright (C) 1997-2022 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 /** @file include/cwchar
     26  *  This is a Standard C++ Library file.  You should @c \#include this file
     27  *  in your programs, rather than any of the @a *.h implementation files.
     28  *
     29  *  This is the C++ version of the Standard C Library header @c wchar.h,
     30  *  and its contents are (mostly) the same as that header, but are all
     31  *  contained in the namespace @c std (except for names which are defined
     32  *  as macros in C).
     33  */
     34 
     35 //
     36 // ISO C++ 14882: 21.4
     37 //
     38 
     39 #pragma GCC system_header
     40 
     41 #include <bits/c++config.h>
     42 
     43 #if _GLIBCXX_HAVE_WCHAR_H
     44 #include <wchar.h>
     45 #endif
     46 
     47 #ifndef _GLIBCXX_CWCHAR
     48 #define _GLIBCXX_CWCHAR 1
     49 
     50 // Need to do a bit of trickery here with mbstate_t as char_traits
     51 // assumes it is in wchar.h, regardless of wchar_t specializations.
     52 #ifndef _GLIBCXX_HAVE_MBSTATE_T
     53 extern "C"
     54 {
     55   typedef struct
     56   {
     57     int __fill[6];
     58   } mbstate_t;
     59 }
     60 #endif
     61 
     62 namespace std
     63 {
     64   using ::mbstate_t;
     65 } // namespace std
     66 
     67 // Get rid of those macros defined in <wchar.h> in lieu of real functions.
     68 #undef btowc
     69 #undef fgetwc
     70 #undef fgetws
     71 #undef fputwc
     72 #undef fputws
     73 #undef fwide
     74 #undef fwprintf
     75 #undef fwscanf
     76 #undef getwc
     77 #undef getwchar
     78 #undef mbrlen
     79 #undef mbrtowc
     80 #undef mbsinit
     81 #undef mbsrtowcs
     82 #undef putwc
     83 #undef putwchar
     84 #undef swprintf
     85 #undef swscanf
     86 #undef ungetwc
     87 #undef vfwprintf
     88 #if _GLIBCXX_HAVE_VFWSCANF
     89 # undef vfwscanf
     90 #endif
     91 #undef vswprintf
     92 #if _GLIBCXX_HAVE_VSWSCANF
     93 # undef vswscanf
     94 #endif
     95 #undef vwprintf
     96 #if _GLIBCXX_HAVE_VWSCANF
     97 # undef vwscanf
     98 #endif
     99 #undef wcrtomb
    100 #undef wcscat
    101 #undef wcschr
    102 #undef wcscmp
    103 #undef wcscoll
    104 #undef wcscpy
    105 #undef wcscspn
    106 #undef wcsftime
    107 #undef wcslen
    108 #undef wcsncat
    109 #undef wcsncmp
    110 #undef wcsncpy
    111 #undef wcspbrk
    112 #undef wcsrchr
    113 #undef wcsrtombs
    114 #undef wcsspn
    115 #undef wcsstr
    116 #undef wcstod
    117 #if _GLIBCXX_HAVE_WCSTOF
    118 # undef wcstof
    119 #endif
    120 #undef wcstok
    121 #undef wcstol
    122 #undef wcstoul
    123 #undef wcsxfrm
    124 #undef wctob
    125 #undef wmemchr
    126 #undef wmemcmp
    127 #undef wmemcpy
    128 #undef wmemmove
    129 #undef wmemset
    130 #undef wprintf
    131 #undef wscanf
    132 
    133 #if _GLIBCXX_USE_WCHAR_T
    134 
    135 extern "C++"
    136 {
    137 namespace std _GLIBCXX_VISIBILITY(default)
    138 {
    139 _GLIBCXX_BEGIN_NAMESPACE_VERSION
    140 
    141   using ::wint_t;
    142 
    143   using ::btowc;
    144   using ::fgetwc;
    145   using ::fgetws;
    146   using ::fputwc;
    147   using ::fputws;
    148   using ::fwide;
    149   using ::fwprintf;
    150   using ::fwscanf;
    151   using ::getwc;
    152   using ::getwchar;
    153   using ::mbrlen;
    154   using ::mbrtowc;
    155   using ::mbsinit;
    156   using ::mbsrtowcs;
    157   using ::putwc;
    158   using ::putwchar;
    159 #ifndef _GLIBCXX_HAVE_BROKEN_VSWPRINTF
    160   using ::swprintf;
    161 #endif
    162   using ::swscanf;
    163   using ::ungetwc;
    164   using ::vfwprintf;
    165 #if _GLIBCXX_HAVE_VFWSCANF
    166   using ::vfwscanf;
    167 #endif
    168 #ifndef _GLIBCXX_HAVE_BROKEN_VSWPRINTF
    169   using ::vswprintf;
    170 #endif
    171 #if _GLIBCXX_HAVE_VSWSCANF
    172   using ::vswscanf;
    173 #endif
    174   using ::vwprintf;
    175 #if _GLIBCXX_HAVE_VWSCANF
    176   using ::vwscanf;
    177 #endif
    178   using ::wcrtomb;
    179   using ::wcscat;
    180   using ::wcscmp;
    181   using ::wcscoll;
    182   using ::wcscpy;
    183   using ::wcscspn;
    184   using ::wcsftime;
    185   using ::wcslen;
    186   using ::wcsncat;
    187   using ::wcsncmp;
    188   using ::wcsncpy;
    189   using ::wcsrtombs;
    190   using ::wcsspn;
    191   using ::wcstod;
    192 #if _GLIBCXX_HAVE_WCSTOF
    193   using ::wcstof;
    194 #endif
    195   using ::wcstok;
    196   using ::wcstol;
    197   using ::wcstoul;
    198   using ::wcsxfrm;
    199   using ::wctob;
    200   using ::wmemcmp;
    201   using ::wmemcpy;
    202   using ::wmemmove;
    203   using ::wmemset;
    204   using ::wprintf;
    205   using ::wscanf;
    206   using ::wcschr;
    207   using ::wcspbrk;
    208   using ::wcsrchr;
    209   using ::wcsstr;
    210   using ::wmemchr;
    211 
    212 #ifndef __CORRECT_ISO_CPP_WCHAR_H_PROTO
    213   inline wchar_t*
    214   wcschr(wchar_t* __p, wchar_t __c)
    215   { return wcschr(const_cast<const wchar_t*>(__p), __c); }
    216 
    217   inline wchar_t*
    218   wcspbrk(wchar_t* __s1, const wchar_t* __s2)
    219   { return wcspbrk(const_cast<const wchar_t*>(__s1), __s2); }
    220 
    221   inline wchar_t*
    222   wcsrchr(wchar_t* __p, wchar_t __c)
    223   { return wcsrchr(const_cast<const wchar_t*>(__p), __c); }
    224 
    225   inline wchar_t*
    226   wcsstr(wchar_t* __s1, const wchar_t* __s2)
    227   { return wcsstr(const_cast<const wchar_t*>(__s1), __s2); }
    228 
    229   inline wchar_t*
    230   wmemchr(wchar_t* __p, wchar_t __c, size_t __n)
    231   { return wmemchr(const_cast<const wchar_t*>(__p), __c, __n); }
    232 #endif
    233 
    234 _GLIBCXX_END_NAMESPACE_VERSION
    235 } // namespace
    236 } // extern "C++"
    237 
    238 #if _GLIBCXX_USE_C99_WCHAR
    239 
    240 #undef wcstold
    241 #undef wcstoll
    242 #undef wcstoull
    243 
    244 namespace __gnu_cxx
    245 {
    246 #if _GLIBCXX_USE_C99_CHECK || _GLIBCXX_USE_C99_DYNAMIC
    247   extern "C" long double
    248     (wcstold)(const wchar_t * __restrict, wchar_t ** __restrict) throw ();
    249 #endif
    250 #if !_GLIBCXX_USE_C99_DYNAMIC
    251   using ::wcstold;
    252 #endif
    253 #if _GLIBCXX_USE_C99_LONG_LONG_CHECK || _GLIBCXX_USE_C99_LONG_LONG_DYNAMIC
    254   extern "C" long long int
    255     (wcstoll)(const wchar_t * __restrict, wchar_t ** __restrict, int) throw ();
    256   extern "C" unsigned long long int
    257     (wcstoull)(const wchar_t * __restrict, wchar_t ** __restrict, int) throw ();
    258 #endif
    259 #if !_GLIBCXX_USE_C99_LONG_LONG_DYNAMIC
    260   using ::wcstoll;
    261   using ::wcstoull;
    262 #endif
    263 } // namespace __gnu_cxx
    264 
    265 namespace std
    266 {
    267   using ::__gnu_cxx::wcstold;
    268   using ::__gnu_cxx::wcstoll;
    269   using ::__gnu_cxx::wcstoull;
    270 } // namespace
    271 
    272 #endif
    273 
    274 #endif //_GLIBCXX_USE_WCHAR_T
    275 
    276 #if __cplusplus >= 201103L
    277 
    278 #ifdef _GLIBCXX_USE_WCHAR_T
    279 
    280 namespace std
    281 {
    282 #if _GLIBCXX_HAVE_WCSTOF
    283   using std::wcstof;
    284 #endif
    285 #if _GLIBCXX_HAVE_VFWSCANF
    286   using std::vfwscanf;
    287 #endif
    288 #if _GLIBCXX_HAVE_VSWSCANF
    289   using std::vswscanf;
    290 #endif
    291 #if _GLIBCXX_HAVE_VWSCANF
    292   using std::vwscanf;
    293 #endif
    294 
    295 #if _GLIBCXX_USE_C99_WCHAR
    296   using std::wcstold;
    297   using std::wcstoll;
    298   using std::wcstoull;
    299 #endif
    300 } // namespace
    301 
    302 #endif // _GLIBCXX_USE_WCHAR_T
    303 
    304 #endif // C++11
    305 
    306 #endif
    307