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git.ipfire.org Git - thirdparty/gcc.git/blob - libstdc++-v3/config/locale/gnu/ctype_members.cc
1 // std::ctype implementation details, GNU version -*- C++ -*-
3 // Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
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 3, 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 // Under Section 7 of GPL version 3, you are granted additional
18 // permissions described in the GCC Runtime Library Exception, version
19 // 3.1, as published by the Free Software Foundation.
21 // You should have received a copy of the GNU General Public License and
22 // a copy of the GCC Runtime Library Exception along with this program;
23 // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
24 // <http://www.gnu.org/licenses/>.
27 // ISO C++ 14882: 22.2.1.1.2 ctype virtual functions.
30 // Written by Benjamin Kosnik <bkoz@redhat.com>
34 #include <bits/c++locale_internal.h>
36 _GLIBCXX_BEGIN_NAMESPACE(std
)
38 // NB: The other ctype<char> specializations are in src/locale.cc and
39 // various /config/os/* files.
40 ctype_byname
<char>::ctype_byname(const char* __s
, size_t __refs
)
41 : ctype
<char>(0, false, __refs
)
43 if (std::strcmp(__s
, "C") != 0 && std::strcmp(__s
, "POSIX") != 0)
45 this->_S_destroy_c_locale(this->_M_c_locale_ctype
);
46 this->_S_create_c_locale(this->_M_c_locale_ctype
, __s
);
47 this->_M_toupper
= this->_M_c_locale_ctype
->__ctype_toupper
;
48 this->_M_tolower
= this->_M_c_locale_ctype
->__ctype_tolower
;
49 this->_M_table
= this->_M_c_locale_ctype
->__ctype_b
;
53 ctype_byname
<char>::~ctype_byname()
56 #ifdef _GLIBCXX_USE_WCHAR_T
57 ctype
<wchar_t>::__wmask_type
58 ctype
<wchar_t>::_M_convert_to_wmask(const mask __m
) const
64 __ret
= __wctype_l("space", _M_c_locale_ctype
);
67 __ret
= __wctype_l("print", _M_c_locale_ctype
);
70 __ret
= __wctype_l("cntrl", _M_c_locale_ctype
);
73 __ret
= __wctype_l("upper", _M_c_locale_ctype
);
76 __ret
= __wctype_l("lower", _M_c_locale_ctype
);
79 __ret
= __wctype_l("alpha", _M_c_locale_ctype
);
82 __ret
= __wctype_l("digit", _M_c_locale_ctype
);
85 __ret
= __wctype_l("punct", _M_c_locale_ctype
);
88 __ret
= __wctype_l("xdigit", _M_c_locale_ctype
);
91 __ret
= __wctype_l("alnum", _M_c_locale_ctype
);
94 __ret
= __wctype_l("graph", _M_c_locale_ctype
);
97 __ret
= __wmask_type();
103 ctype
<wchar_t>::do_toupper(wchar_t __c
) const
104 { return __towupper_l(__c
, _M_c_locale_ctype
); }
107 ctype
<wchar_t>::do_toupper(wchar_t* __lo
, const wchar_t* __hi
) const
111 *__lo
= __towupper_l(*__lo
, _M_c_locale_ctype
);
118 ctype
<wchar_t>::do_tolower(wchar_t __c
) const
119 { return __towlower_l(__c
, _M_c_locale_ctype
); }
122 ctype
<wchar_t>::do_tolower(wchar_t* __lo
, const wchar_t* __hi
) const
126 *__lo
= __towlower_l(*__lo
, _M_c_locale_ctype
);
134 do_is(mask __m
, wchar_t __c
) const
136 // The case of __m == ctype_base::space is particularly important,
137 // due to its use in many istream functions. Therefore we deal with
138 // it first, exploiting the knowledge that on GNU systems _M_bit[5]
139 // is the mask corresponding to ctype_base::space. NB: an encoding
140 // change would not affect correctness!
142 if (__m
== _M_bit
[5])
143 __ret
= __iswctype_l(__c
, _M_wmask
[5], _M_c_locale_ctype
);
146 // Highest bitmask in ctype_base == 10, but extra in "C"
147 // library for blank.
148 const size_t __bitmasksize
= 11;
149 for (size_t __bitcur
= 0; __bitcur
<= __bitmasksize
; ++__bitcur
)
150 if (__m
& _M_bit
[__bitcur
])
152 if (__iswctype_l(__c
, _M_wmask
[__bitcur
], _M_c_locale_ctype
))
157 else if (__m
== _M_bit
[__bitcur
])
166 do_is(const wchar_t* __lo
, const wchar_t* __hi
, mask
* __vec
) const
168 for (; __lo
< __hi
; ++__vec
, ++__lo
)
170 // Highest bitmask in ctype_base == 10, but extra in "C"
171 // library for blank.
172 const size_t __bitmasksize
= 11;
174 for (size_t __bitcur
= 0; __bitcur
<= __bitmasksize
; ++__bitcur
)
175 if (__iswctype_l(*__lo
, _M_wmask
[__bitcur
], _M_c_locale_ctype
))
176 __m
|= _M_bit
[__bitcur
];
184 do_scan_is(mask __m
, const wchar_t* __lo
, const wchar_t* __hi
) const
186 while (__lo
< __hi
&& !this->do_is(__m
, *__lo
))
193 do_scan_not(mask __m
, const char_type
* __lo
, const char_type
* __hi
) const
195 while (__lo
< __hi
&& this->do_is(__m
, *__lo
) != 0)
202 do_widen(char __c
) const
203 { return _M_widen
[static_cast<unsigned char>(__c
)]; }
207 do_widen(const char* __lo
, const char* __hi
, wchar_t* __dest
) const
211 *__dest
= _M_widen
[static_cast<unsigned char>(*__lo
)];
220 do_narrow(wchar_t __wc
, char __dfault
) const
222 if (__wc
>= 0 && __wc
< 128 && _M_narrow_ok
)
223 return _M_narrow
[__wc
];
224 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2)
225 __c_locale __old
= __uselocale(_M_c_locale_ctype
);
227 const int __c
= wctob(__wc
);
228 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2)
231 return (__c
== EOF
? __dfault
: static_cast<char>(__c
));
236 do_narrow(const wchar_t* __lo
, const wchar_t* __hi
, char __dfault
,
239 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2)
240 __c_locale __old
= __uselocale(_M_c_locale_ctype
);
245 if (*__lo
>= 0 && *__lo
< 128)
246 *__dest
= _M_narrow
[*__lo
];
249 const int __c
= wctob(*__lo
);
250 *__dest
= (__c
== EOF
? __dfault
: static_cast<char>(__c
));
258 const int __c
= wctob(*__lo
);
259 *__dest
= (__c
== EOF
? __dfault
: static_cast<char>(__c
));
263 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2)
270 ctype
<wchar_t>::_M_initialize_ctype()
272 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2)
273 __c_locale __old
= __uselocale(_M_c_locale_ctype
);
276 for (__i
= 0; __i
< 128; ++__i
)
278 const int __c
= wctob(__i
);
282 _M_narrow
[__i
] = static_cast<char>(__c
);
287 _M_narrow_ok
= false;
289 __j
< sizeof(_M_widen
) / sizeof(wint_t); ++__j
)
290 _M_widen
[__j
] = btowc(__j
);
292 for (size_t __k
= 0; __k
<= 11; ++__k
)
294 _M_bit
[__k
] = static_cast<mask
>(_ISbit(__k
));
295 _M_wmask
[__k
] = _M_convert_to_wmask(_M_bit
[__k
]);
297 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2)
301 #endif // _GLIBCXX_USE_WCHAR_T
303 _GLIBCXX_END_NAMESPACE