1 // std::ctype implementation details, generic version -*- C++ -*-
3 // Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
4 // Free Software Foundation, Inc.
6 // This file is part of the GNU ISO C++ Library. This library is free
7 // software; you can redistribute it and/or modify it under the
8 // terms of the GNU General Public License as published by the
9 // Free Software Foundation; either version 2, or (at your option)
12 // This library is distributed in the hope that it will be useful,
13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 // GNU General Public License for more details.
17 // You should have received a copy of the GNU General Public License along
18 // with this library; see the file COPYING. If not, write to the Free
19 // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
22 // As a special exception, you may use this file as part of a free software
23 // library without restriction. Specifically, if other files instantiate
24 // templates or use macros or inline functions from this file, or you compile
25 // this file and link it with other files to produce an executable, this
26 // file does not by itself cause the resulting executable to be covered by
27 // the GNU General Public License. This exception does not however
28 // invalidate any other reasons why the executable file might be covered by
29 // the GNU General Public License.
32 // ISO C++ 14882: 22.2.1.1.2 ctype virtual functions.
35 // Written by Benjamin Kosnik <bkoz@redhat.com>
41 _GLIBCXX_BEGIN_NAMESPACE(std)
43 // NB: The other ctype<char> specializations are in src/locale.cc and
44 // various /config/os/* files.
45 ctype_byname<char>::ctype_byname(const char* __s, size_t __refs)
46 : ctype<char>(0, false, __refs)
48 if (std::strcmp(__s, "C") != 0 && std::strcmp(__s, "POSIX") != 0)
50 this->_S_destroy_c_locale(this->_M_c_locale_ctype);
51 this->_S_create_c_locale(this->_M_c_locale_ctype, __s);
55 ctype_byname<char>::~ctype_byname()
58 #ifdef _GLIBCXX_USE_WCHAR_T
59 ctype<wchar_t>::__wmask_type
60 ctype<wchar_t>::_M_convert_to_wmask(const mask __m) const
66 __ret = wctype("space");
69 __ret = wctype("print");
72 __ret = wctype("cntrl");
75 __ret = wctype("upper");
78 __ret = wctype("lower");
81 __ret = wctype("alpha");
84 __ret = wctype("digit");
87 __ret = wctype("punct");
90 __ret = wctype("xdigit");
93 __ret = wctype("alnum");
96 __ret = wctype("graph");
99 __ret = __wmask_type();
105 ctype<wchar_t>::do_toupper(wchar_t __c) const
106 { return towupper(__c); }
109 ctype<wchar_t>::do_toupper(wchar_t* __lo, const wchar_t* __hi) const
113 *__lo = towupper(*__lo);
120 ctype<wchar_t>::do_tolower(wchar_t __c) const
121 { return towlower(__c); }
124 ctype<wchar_t>::do_tolower(wchar_t* __lo, const wchar_t* __hi) const
128 *__lo = towlower(*__lo);
136 do_is(mask __m, char_type __c) const
139 // Generically, 15 (instead of 10) since we don't know the numerical
140 // encoding of the various categories in /usr/include/ctype.h.
141 const size_t __bitmasksize = 15;
142 for (size_t __bitcur = 0; __bitcur <= __bitmasksize; ++__bitcur)
143 if (__m & _M_bit[__bitcur]
144 && iswctype(__c, _M_wmask[__bitcur]))
154 do_is(const wchar_t* __lo, const wchar_t* __hi, mask* __vec) const
156 for (;__lo < __hi; ++__vec, ++__lo)
158 // Generically, 15 (instead of 10) since we don't know the numerical
159 // encoding of the various categories in /usr/include/ctype.h.
160 const size_t __bitmasksize = 15;
162 for (size_t __bitcur = 0; __bitcur <= __bitmasksize; ++__bitcur)
163 if (iswctype(*__lo, _M_wmask[__bitcur]))
164 __m |= _M_bit[__bitcur];
172 do_scan_is(mask __m, const wchar_t* __lo, const wchar_t* __hi) const
174 while (__lo < __hi && !this->do_is(__m, *__lo))
181 do_scan_not(mask __m, const char_type* __lo, const char_type* __hi) const
183 while (__lo < __hi && this->do_is(__m, *__lo) != 0)
190 do_widen(char __c) const
191 { return _M_widen[static_cast<unsigned char>(__c)]; }
195 do_widen(const char* __lo, const char* __hi, wchar_t* __dest) const
199 *__dest = _M_widen[static_cast<unsigned char>(*__lo)];
208 do_narrow(wchar_t __wc, char __dfault) const
210 if (__wc >= 0 && __wc < 128 && _M_narrow_ok)
211 return _M_narrow[__wc];
212 const int __c = wctob(__wc);
213 return (__c == EOF ? __dfault : static_cast<char>(__c));
218 do_narrow(const wchar_t* __lo, const wchar_t* __hi, char __dfault,
224 if (*__lo >= 0 && *__lo < 128)
225 *__dest = _M_narrow[*__lo];
228 const int __c = wctob(*__lo);
229 *__dest = (__c == EOF ? __dfault : static_cast<char>(__c));
237 const int __c = wctob(*__lo);
238 *__dest = (__c == EOF ? __dfault : static_cast<char>(__c));
246 ctype<wchar_t>::_M_initialize_ctype()
249 for (__i = 0; __i < 128; ++__i)
251 const int __c = wctob(__i);
255 _M_narrow[__i] = static_cast<char>(__c);
260 _M_narrow_ok = false;
262 __i < sizeof(_M_widen) / sizeof(wint_t); ++__i)
263 _M_widen[__i] = btowc(__i);
265 for (size_t __i = 0; __i <= 15; ++__i)
267 _M_bit[__i] = static_cast<mask>(1 << __i);
268 _M_wmask[__i] = _M_convert_to_wmask(_M_bit[__i]);
271 #endif // _GLIBCXX_USE_WCHAR_T
273 _GLIBCXX_END_NAMESPACE