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git.ipfire.org Git - thirdparty/gcc.git/blob - libstdc++-v3/config/locale/generic/ctype_members.cc
1 // std::ctype implementation details, generic version -*- C++ -*-
3 // Copyright (C) 2001, 2002, 2003 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 2, 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 // 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, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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.
31 // ISO C++ 14882: 22.2.1.1.2 ctype virtual functions.
34 // Written by Benjamin Kosnik <bkoz@redhat.com>
40 // NB: The other ctype<char> specializations are in src/locale.cc and
41 // various /config/os/* files.
43 ctype_byname
<char>::ctype_byname(const char* __s
, size_t __refs
)
44 : ctype
<char>(0, false, __refs
)
46 if (std::strcmp(__s
, "C") != 0 && std::strcmp(__s
, "POSIX") != 0)
48 _S_destroy_c_locale(_M_c_locale_ctype
);
49 _S_create_c_locale(_M_c_locale_ctype
, __s
);
53 #ifdef _GLIBCXX_USE_WCHAR_T
54 ctype
<wchar_t>::__wmask_type
55 ctype
<wchar_t>::_M_convert_to_wmask(const mask __m
) const
61 __ret
= wctype("space");
64 __ret
= wctype("print");
67 __ret
= wctype("cntrl");
70 __ret
= wctype("upper");
73 __ret
= wctype("lower");
76 __ret
= wctype("alpha");
79 __ret
= wctype("digit");
82 __ret
= wctype("punct");
85 __ret
= wctype("xdigit");
88 __ret
= wctype("alnum");
91 __ret
= wctype("graph");
100 ctype
<wchar_t>::do_toupper(wchar_t __c
) const
101 { return towupper(__c
); }
104 ctype
<wchar_t>::do_toupper(wchar_t* __lo
, const wchar_t* __hi
) const
108 *__lo
= towupper(*__lo
);
115 ctype
<wchar_t>::do_tolower(wchar_t __c
) const
116 { return towlower(__c
); }
119 ctype
<wchar_t>::do_tolower(wchar_t* __lo
, const wchar_t* __hi
) const
123 *__lo
= towlower(*__lo
);
131 do_is(mask __m
, char_type __c
) const
134 // Generically, 15 (instead of 10) since we don't know the numerical
135 // encoding of the various categories in /usr/include/ctype.h.
136 const size_t __bitmasksize
= 15;
137 for (size_t __bitcur
= 0; __bitcur
<= __bitmasksize
; ++__bitcur
)
139 const mask __bit
= static_cast<mask
>(1 << __bitcur
);
141 __ret
|= iswctype(__c
, _M_convert_to_wmask(__bit
));
148 do_is(const wchar_t* __lo
, const wchar_t* __hi
, mask
* __vec
) const
150 for (;__lo
< __hi
; ++__vec
, ++__lo
)
152 // Generically, 15 (instead of 10) since we don't know the numerical
153 // encoding of the various categories in /usr/include/ctype.h.
154 const size_t __bitmasksize
= 15;
156 for (size_t __bitcur
= 0; __bitcur
<= __bitmasksize
; ++__bitcur
)
158 const mask __bit
= static_cast<mask
>(1 << __bitcur
);
159 if (iswctype(*__lo
, _M_convert_to_wmask(__bit
)))
169 do_scan_is(mask __m
, const wchar_t* __lo
, const wchar_t* __hi
) const
171 while (__lo
< __hi
&& !this->do_is(__m
, *__lo
))
178 do_scan_not(mask __m
, const char_type
* __lo
, const char_type
* __hi
) const
180 while (__lo
< __hi
&& this->do_is(__m
, *__lo
) != 0)
187 do_widen(char __c
) const
188 { return _M_widen
[static_cast<unsigned char>(__c
)]; }
192 do_widen(const char* __lo
, const char* __hi
, wchar_t* __dest
) const
196 *__dest
= _M_widen
[static_cast<unsigned char>(*__lo
)];
205 do_narrow(wchar_t __wc
, char __dfault
) const
207 if (__wc
>= 0 && __wc
< 128 && _M_narrow_ok
)
208 return _M_narrow
[__wc
];
209 const int __c
= wctob(__wc
);
210 return (__c
== EOF
? __dfault
: static_cast<char>(__c
));
215 do_narrow(const wchar_t* __lo
, const wchar_t* __hi
, char __dfault
,
221 if (*__lo
>= 0 && *__lo
< 128)
222 *__dest
= _M_narrow
[*__lo
];
225 const int __c
= wctob(*__lo
);
226 *__dest
= (__c
== EOF
? __dfault
: static_cast<char>(__c
));
234 const int __c
= wctob(*__lo
);
235 *__dest
= (__c
== EOF
? __dfault
: static_cast<char>(__c
));
243 ctype
<wchar_t>::_M_initialize_ctype()
246 for (__i
= 0; __i
< 128; ++__i
)
248 const int __c
= wctob(__i
);
252 _M_narrow
[__i
] = static_cast<char>(__c
);
257 _M_narrow_ok
= false;
259 __i
< sizeof(_M_widen
) / sizeof(wint_t); ++__i
)
260 _M_widen
[__i
] = btowc(__i
);
262 #endif // _GLIBCXX_USE_WCHAR_T