// std::ctype implementation details, generic version -*- C++ -*-
// Copyright (C) 2001-2013 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// Under Section 7 of GPL version 3, you are granted additional
// permissions described in the GCC Runtime Library Exception, version
// 3.1, as published by the Free Software Foundation.
// You should have received a copy of the GNU General Public License and
// a copy of the GCC Runtime Library Exception along with this program;
// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
// <http://www.gnu.org/licenses/>.
//
// ISO C++ 14882: 22.2.1.1.2 ctype virtual functions.
//
// Written by Benjamin Kosnik <bkoz@redhat.com>
#include <locale>
#include <cstdlib>
#include <cstring>
#include <cstdio>
namespace std _GLIBCXX_VISIBILITY(default)
{
_GLIBCXX_BEGIN_NAMESPACE_VERSION
// NB: The other ctype<char> specializations are in src/locale.cc and
// various /config/os/* files.
ctype_byname<char>::ctype_byname(const char* __s, size_t __refs)
: ctype<char>(0, false, __refs)
{
if (std::strcmp(__s, "C") != 0 && std::strcmp(__s, "POSIX") != 0)
{
this->_S_destroy_c_locale(this->_M_c_locale_ctype);
this->_S_create_c_locale(this->_M_c_locale_ctype, __s);
}
}
ctype_byname<char>::~ctype_byname()
{ }
#ifdef _GLIBCXX_USE_WCHAR_T
ctype<wchar_t>::__wmask_type
ctype<wchar_t>::_M_convert_to_wmask(const mask __m) const throw()
{
__wmask_type __ret;
switch (__m)
{
case space:
__ret = wctype("space");
break;
case print:
__ret = wctype("print");
break;
case cntrl:
__ret = wctype("cntrl");
break;
case upper:
__ret = wctype("upper");
break;
case lower:
__ret = wctype("lower");
break;
case alpha:
__ret = wctype("alpha");
break;
case digit:
__ret = wctype("digit");
break;
case punct:
__ret = wctype("punct");
break;
case xdigit:
__ret = wctype("xdigit");
break;
case alnum:
__ret = wctype("alnum");
break;
case graph:
__ret = wctype("graph");
break;
default:
__ret = __wmask_type();
}
return __ret;
};
wchar_t
ctype<wchar_t>::do_toupper(wchar_t __c) const
{ return towupper(__c); }
const wchar_t*
ctype<wchar_t>::do_toupper(wchar_t* __lo, const wchar_t* __hi) const
{
while (__lo < __hi)
{
*__lo = towupper(*__lo);
++__lo;
}
return __hi;
}
wchar_t
ctype<wchar_t>::do_tolower(wchar_t __c) const
{ return towlower(__c); }
const wchar_t*
ctype<wchar_t>::do_tolower(wchar_t* __lo, const wchar_t* __hi) const
{
while (__lo < __hi)
{
*__lo = towlower(*__lo);
++__lo;
}
return __hi;
}
bool
ctype<wchar_t>::
do_is(mask __m, char_type __c) const
{
bool __ret = false;
// Generically, 15 (instead of 10) since we don't know the numerical
// encoding of the various categories in /usr/include/ctype.h.
const size_t __bitmasksize = 15;
for (size_t __bitcur = 0; __bitcur <= __bitmasksize; ++__bitcur)
if (__m & _M_bit[__bitcur]
&& iswctype(__c, _M_wmask[__bitcur]))
{
__ret = true;
break;
}
return __ret;
}
const wchar_t*
ctype<wchar_t>::
do_is(const wchar_t* __lo, const wchar_t* __hi, mask* __vec) const
{
for (;__lo < __hi; ++__vec, ++__lo)
{
// Generically, 15 (instead of 10) since we don't know the numerical
// encoding of the various categories in /usr/include/ctype.h.
const size_t __bitmasksize = 15;
mask __m = 0;
for (size_t __bitcur = 0; __bitcur <= __bitmasksize; ++__bitcur)
if (iswctype(*__lo, _M_wmask[__bitcur]))
__m |= _M_bit[__bitcur];
*__vec = __m;
}
return __hi;
}
const wchar_t*
ctype<wchar_t>::
do_scan_is(mask __m, const wchar_t* __lo, const wchar_t* __hi) const
{
while (__lo < __hi && !this->do_is(__m, *__lo))
++__lo;
return __lo;
}
const wchar_t*
ctype<wchar_t>::
do_scan_not(mask __m, const char_type* __lo, const char_type* __hi) const
{
while (__lo < __hi && this->do_is(__m, *__lo) != 0)
++__lo;
return __lo;
}
wchar_t
ctype<wchar_t>::
do_widen(char __c) const
{ return _M_widen[static_cast<unsigned char>(__c)]; }
const char*
ctype<wchar_t>::
do_widen(const char* __lo, const char* __hi, wchar_t* __dest) const
{
while (__lo < __hi)
{
*__dest = _M_widen[static_cast<unsigned char>(*__lo)];
++__lo;
++__dest;
}
return __hi;
}
char
ctype<wchar_t>::
do_narrow(wchar_t __wc, char __dfault) const
{
if (__wc >= 0 && __wc < 128 && _M_narrow_ok)
return _M_narrow[__wc];
const int __c = wctob(__wc);
return (__c == EOF ? __dfault : static_cast<char>(__c));
}
const wchar_t*
ctype<wchar_t>::
do_narrow(const wchar_t* __lo, const wchar_t* __hi, char __dfault,
char* __dest) const
{
if (_M_narrow_ok)
while (__lo < __hi)
{
if (*__lo >= 0 && *__lo < 128)
*__dest = _M_narrow[*__lo];
else
{
const int __c = wctob(*__lo);
*__dest = (__c == EOF ? __dfault : static_cast<char>(__c));
}
++__lo;
++__dest;
}
else
while (__lo < __hi)
{
const int __c = wctob(*__lo);
*__dest = (__c == EOF ? __dfault : static_cast<char>(__c));
++__lo;
++__dest;
}
return __hi;
}
void
ctype<wchar_t>::_M_initialize_ctype() throw()
{
wint_t __i;
for (__i = 0; __i < 128; ++__i)
{
const int __c = wctob(__i);
if (__c == EOF)
break;
else
_M_narrow[__i] = static_cast<char>(__c);
}
if (__i == 128)
_M_narrow_ok = true;
else
_M_narrow_ok = false;
for (size_t __i = 0;
__i < sizeof(_M_widen) / sizeof(wint_t); ++__i)
_M_widen[__i] = btowc(__i);
for (size_t __i = 0; __i <= 15; ++__i)
{
_M_bit[__i] = static_cast<mask>(1 << __i);
_M_wmask[__i] = _M_convert_to_wmask(_M_bit[__i]);
}
}
#endif // _GLIBCXX_USE_WCHAR_T
_GLIBCXX_END_NAMESPACE_VERSION
} // namespace