1// std::ctype implementation details, GNU version -*- C++ -*- 2 3// Copyright (C) 2001, 2002, 2003, 2004 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 2, 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// You should have received a copy of the GNU General Public License along 17// with this library; see the file COPYING. If not, write to the Free 18// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 19// USA. 20 21// As a special exception, you may use this file as part of a free software 22// library without restriction. Specifically, if other files instantiate 23// templates or use macros or inline functions from this file, or you compile 24// this file and link it with other files to produce an executable, this 25// file does not by itself cause the resulting executable to be covered by 26// the GNU General Public License. This exception does not however 27// invalidate any other reasons why the executable file might be covered by 28// the GNU General Public License. 29 30// 31// ISO C++ 14882: 22.2.1.1.2 ctype virtual functions. 32// 33 34// Written by Benjamin Kosnik <bkoz@redhat.com> 35 36#include <locale> 37#include <bits/c++locale_internal.h> 38 39namespace std 40{ 41 // NB: The other ctype<char> specializations are in src/locale.cc and 42 // various /config/os/* files. 43 template<> 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#ifdef _GLIBCXX_USE_WCHAR_T 55 ctype<wchar_t>::__wmask_type 56 ctype<wchar_t>::_M_convert_to_wmask(const mask __m) const 57 { 58 // Darwin uses the same codes for 'char' as 'wchar_t', so this routine 59 // never gets called. 60 return __m; 61 }; 62 63 wchar_t 64 ctype<wchar_t>::do_toupper(wchar_t __c) const 65 { return towupper(__c); } 66 67 const wchar_t* 68 ctype<wchar_t>::do_toupper(wchar_t* __lo, const wchar_t* __hi) const 69 { 70 while (__lo < __hi) 71 { 72 *__lo = towupper(*__lo); 73 ++__lo; 74 } 75 return __hi; 76 } 77 78 wchar_t 79 ctype<wchar_t>::do_tolower(wchar_t __c) const 80 { return towlower(__c); } 81 82 const wchar_t* 83 ctype<wchar_t>::do_tolower(wchar_t* __lo, const wchar_t* __hi) const 84 { 85 while (__lo < __hi) 86 { 87 *__lo = towlower(*__lo); 88 ++__lo; 89 } 90 return __hi; 91 } 92 93 wchar_t 94 ctype<wchar_t>:: 95 do_widen(char __c) const 96 { return _M_widen[static_cast<unsigned char>(__c)]; } 97 98 const char* 99 ctype<wchar_t>:: 100 do_widen(const char* __lo, const char* __hi, wchar_t* __dest) const 101 { 102 while (__lo < __hi) 103 { 104 *__dest = _M_widen[static_cast<unsigned char>(*__lo)]; 105 ++__lo; 106 ++__dest; 107 } 108 return __hi; 109 } 110 111 char 112 ctype<wchar_t>:: 113 do_narrow(wchar_t __wc, char __dfault) const 114 { 115 if (__wc >= 0 && __wc < 128 && _M_narrow_ok) 116 return _M_narrow[__wc]; 117 const int __c = wctob(__wc); 118 return (__c == EOF ? __dfault : static_cast<char>(__c)); 119 } 120 121 const wchar_t* 122 ctype<wchar_t>:: 123 do_narrow(const wchar_t* __lo, const wchar_t* __hi, char __dfault, 124 char* __dest) const 125 { 126 if (_M_narrow_ok) 127 while (__lo < __hi) 128 { 129 if (*__lo >= 0 && *__lo < 128) 130 *__dest = _M_narrow[*__lo]; 131 else 132 { 133 const int __c = wctob(*__lo); 134 *__dest = (__c == EOF ? __dfault : static_cast<char>(__c)); 135 } 136 ++__lo; 137 ++__dest; 138 } 139 else 140 while (__lo < __hi) 141 { 142 const int __c = wctob(*__lo); 143 *__dest = (__c == EOF ? __dfault : static_cast<char>(__c)); 144 ++__lo; 145 ++__dest; 146 } 147 return __hi; 148 } 149 150 void 151 ctype<wchar_t>::_M_initialize_ctype() 152 { 153 wint_t __i; 154 for (__i = 0; __i < 128; ++__i) 155 { 156 const int __c = wctob(__i); 157 if (__c == EOF) 158 break; 159 else 160 _M_narrow[__i] = static_cast<char>(__c); 161 } 162 if (__i == 128) 163 _M_narrow_ok = true; 164 else 165 _M_narrow_ok = false; 166 for (size_t __i = 0; 167 __i < sizeof(_M_widen) / sizeof(wint_t); ++__i) 168 _M_widen[__i] = btowc(__i); 169 } 170#endif // _GLIBCXX_USE_WCHAR_T 171} 172