1 // std::ctype implementation details, GNU version -*- C++ -*-
3 // Copyright (C) 2014-2015 Free Software Foundation, Inc.
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)
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.
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.
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/>.
26 // ISO C++ 14882: 22.2.1.1.2 ctype virtual functions.
29 // Written by Benjamin Kosnik <bkoz@redhat.com>
32 #include <bits/c++locale_internal.h>
37 namespace std _GLIBCXX_VISIBILITY(default)
39 // NB: The other ctype<char> specializations are in src/locale.cc and
40 // various /config/os/* files.
42 ctype_byname<char>::ctype_byname(const char* __s, size_t __refs)
43 : ctype<char>(0, false, __refs)
45 if (std::strcmp(__s, "C") != 0 && std::strcmp(__s, "POSIX") != 0)
47 this->_S_destroy_c_locale(this->_M_c_locale_ctype);
48 this->_S_create_c_locale(this->_M_c_locale_ctype, __s);
52 ctype_byname<char>::~ctype_byname()
55 #ifdef _GLIBCXX_USE_WCHAR_T
56 ctype<wchar_t>::__wmask_type
57 ctype<wchar_t>::_M_convert_to_wmask(
58 const mask __attribute__((__unused__)) __m) const throw()
60 // DragonFly uses the same codes for 'char' as 'wchar_t', so this routine
62 return __wmask_type();
66 ctype<wchar_t>::do_toupper(wchar_t __c) const
67 { return towupper(__c); }
70 ctype<wchar_t>::do_toupper(wchar_t* __lo, const wchar_t* __hi) const
74 *__lo = towupper(*__lo);
81 ctype<wchar_t>::do_tolower(wchar_t __c) const
82 { return towlower(__c); }
85 ctype<wchar_t>::do_tolower(wchar_t* __lo, const wchar_t* __hi) const
89 *__lo = towlower(*__lo);
97 do_widen(char __c) const
98 { return _M_widen[static_cast<unsigned char>(__c)]; }
102 do_widen(const char* __lo, const char* __hi, wchar_t* __dest) const
106 *__dest = _M_widen[static_cast<unsigned char>(*__lo)];
115 do_narrow(wchar_t __wc, char __dfault) const
117 if (__wc >= 0 && __wc < 128 && _M_narrow_ok)
118 return _M_narrow[__wc];
119 const int __c = wctob(__wc);
120 return (__c == EOF ? __dfault : static_cast<char>(__c));
125 do_narrow(const wchar_t* __lo, const wchar_t* __hi, char __dfault,
131 if (*__lo >= 0 && *__lo < 128)
132 *__dest = _M_narrow[*__lo];
135 const int __c = wctob(*__lo);
136 *__dest = (__c == EOF ? __dfault : static_cast<char>(__c));
144 const int __c = wctob(*__lo);
145 *__dest = (__c == EOF ? __dfault : static_cast<char>(__c));
153 ctype<wchar_t>::_M_initialize_ctype() throw()
156 for (__i = 0; __i < 128; ++__i)
158 const int __c = wctob(__i);
162 _M_narrow[__i] = static_cast<char>(__c);
167 _M_narrow_ok = false;
169 __i < sizeof(_M_widen) / sizeof(wint_t); ++__i)
170 _M_widen[__i] = btowc(__i);
172 #endif // _GLIBCXX_USE_WCHAR_T