ctype_members.cc revision 1.1.1.3 
1// std::ctype implementation details, DragonFly version -*- C++ -*-
2
3// Copyright (C) 2014-2017 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 3, 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// 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.
19
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/>.
24
25//
26// ISO C++ 14882: 22.2.1.1.2  ctype virtual functions.
27//
28
29// Written by Benjamin Kosnik <bkoz@redhat.com>
30// Modified for DragonFly by John Marino <gnugcc@marino.st>
31
32#include <locale>
33#include <cstring>
34#include <cstdio>
35
36#ifndef _ISbit
37#define _ISbit(bit) ((bit) < 8 ? ((1 << (bit)) << 8) : ((1 << (bit)) >> 8))
38#endif
39
40namespace std _GLIBCXX_VISIBILITY(default)
41{
42_GLIBCXX_BEGIN_NAMESPACE_VERSION
43
44  // NB: The other ctype<char> specializations are in src/locale.cc and
45  // various /config/os/* files.
46  ctype_byname<char>::ctype_byname(const char* __s, size_t __refs)
47  : ctype<char>(0, false, __refs)
48  {
49    if (std::strcmp(__s, "C") != 0 && std::strcmp(__s, "POSIX") != 0)
50      {
51	this->_S_destroy_c_locale(this->_M_c_locale_ctype);
52	this->_S_create_c_locale(this->_M_c_locale_ctype, __s);
53      }
54  }
55
56  ctype_byname<char>::~ctype_byname()
57  { }
58
59#ifdef _GLIBCXX_USE_WCHAR_T
60  ctype<wchar_t>::__wmask_type
61  ctype<wchar_t>::_M_convert_to_wmask(const mask __m) const throw()
62  {
63    __wmask_type __ret;
64    switch (__m)
65      {
66      case space:
67	__ret = wctype_l("space", (locale_t)_M_c_locale_ctype);
68	break;
69      case print:
70	__ret = wctype_l("print", (locale_t)_M_c_locale_ctype);
71	break;
72      case cntrl:
73	__ret = wctype_l("cntrl", (locale_t)_M_c_locale_ctype);
74	break;
75      case upper:
76	__ret = wctype_l("upper", (locale_t)_M_c_locale_ctype);
77	break;
78      case lower:
79	__ret = wctype_l("lower", (locale_t)_M_c_locale_ctype);
80	break;
81      case alpha:
82	__ret = wctype_l("alpha", (locale_t)_M_c_locale_ctype);
83	break;
84      case digit:
85	__ret = wctype_l("digit", (locale_t)_M_c_locale_ctype);
86	break;
87      case punct:
88	__ret = wctype_l("punct", (locale_t)_M_c_locale_ctype);
89	break;
90      case xdigit:
91	__ret = wctype_l("xdigit", (locale_t)_M_c_locale_ctype);
92	break;
93      case alnum:
94	__ret = wctype_l("alnum", (locale_t)_M_c_locale_ctype);
95	break;
96      case graph:
97	__ret = wctype_l("graph", (locale_t)_M_c_locale_ctype);
98	break;
99      case blank:
100	__ret = wctype_l("blank", (locale_t)_M_c_locale_ctype);
101	break;
102      default:
103	__ret = __wmask_type();
104      }
105    return __ret;
106  }
107
108  wchar_t
109  ctype<wchar_t>::do_toupper(wchar_t __c) const
110  { return towupper_l(__c, (locale_t)_M_c_locale_ctype); }
111
112  const wchar_t*
113  ctype<wchar_t>::do_toupper(wchar_t* __lo, const wchar_t* __hi) const
114  {
115    while (__lo < __hi)
116      {
117        *__lo = towupper_l(*__lo, (locale_t)_M_c_locale_ctype);
118        ++__lo;
119      }
120    return __hi;
121  }
122
123  wchar_t
124  ctype<wchar_t>::do_tolower(wchar_t __c) const
125  { return towlower_l(__c, (locale_t)_M_c_locale_ctype); }
126
127  const wchar_t*
128  ctype<wchar_t>::do_tolower(wchar_t* __lo, const wchar_t* __hi) const
129  {
130    while (__lo < __hi)
131      {
132        *__lo = towlower_l(*__lo, (locale_t)_M_c_locale_ctype);
133        ++__lo;
134      }
135    return __hi;
136  }
137
138  wchar_t
139  ctype<wchar_t>::
140  do_widen(char __c) const
141  { return _M_widen[static_cast<unsigned char>(__c)]; }
142
143  const char*
144  ctype<wchar_t>::
145  do_widen(const char* __lo, const char* __hi, wchar_t* __dest) const
146  {
147    while (__lo < __hi)
148      {
149	*__dest = _M_widen[static_cast<unsigned char>(*__lo)];
150	++__lo;
151	++__dest;
152      }
153    return __hi;
154  }
155
156  char
157  ctype<wchar_t>::
158  do_narrow(wchar_t __wc, char __dfault) const
159  {
160    if (__wc >= 0 && __wc < 128 && _M_narrow_ok)
161      return _M_narrow[__wc];
162    __c_locale __old = (__c_locale)uselocale((locale_t)_M_c_locale_ctype);
163    const int __c = wctob(__wc);
164    uselocale((locale_t)__old);
165    return (__c == EOF ? __dfault : static_cast<char>(__c));
166  }
167
168  const wchar_t*
169  ctype<wchar_t>::
170  do_narrow(const wchar_t* __lo, const wchar_t* __hi, char __dfault,
171	    char* __dest) const
172  {
173    __c_locale __old = (__c_locale)uselocale((locale_t)_M_c_locale_ctype);
174    if (_M_narrow_ok)
175      while (__lo < __hi)
176	{
177	  if (*__lo >= 0 && *__lo < 128)
178	    *__dest = _M_narrow[*__lo];
179	  else
180	    {
181	      const int __c = wctob(*__lo);
182	      *__dest = (__c == EOF ? __dfault : static_cast<char>(__c));
183	    }
184	  ++__lo;
185	  ++__dest;
186	}
187    else
188      while (__lo < __hi)
189	{
190	  const int __c = wctob(*__lo);
191	  *__dest = (__c == EOF ? __dfault : static_cast<char>(__c));
192	  ++__lo;
193	  ++__dest;
194	}
195    uselocale((locale_t)__old);
196    return __hi;
197  }
198
199  void
200  ctype<wchar_t>::_M_initialize_ctype() throw()
201  {
202    __c_locale __old = (__c_locale)uselocale((locale_t)_M_c_locale_ctype);
203    wint_t __i;
204    for (__i = 0; __i < 128; ++__i)
205      {
206	const int __c = wctob(__i);
207	if (__c == EOF)
208	  break;
209	else
210	  _M_narrow[__i] = static_cast<char>(__c);
211      }
212    if (__i == 128)
213      _M_narrow_ok = true;
214    else
215      _M_narrow_ok = false;
216    for (size_t __j = 0;
217	 __j < sizeof(_M_widen) / sizeof(wint_t); ++__j)
218      _M_widen[__j] = btowc(__j);
219
220    for (size_t __k = 0; __k <= 11; ++__k)
221      {
222	_M_bit[__k] = static_cast<mask>(_ISbit(__k));
223	_M_wmask[__k] = _M_convert_to_wmask(_M_bit[__k]);
224      }
225    uselocale((locale_t)__old);
226  }
227#endif //  _GLIBCXX_USE_WCHAR_T
228
229_GLIBCXX_END_NAMESPACE_VERSION
230} // namespace
231