libstdc++-v3/config/locale/gnu/ctype_members.cc - gcc - Git at Google

 // std::ctype implementation details, GNU version -*- C++ -*-

 // Copyright (C) 2001-2021 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 <cstdio>
 #include <bits/c++locale_internal.h>

 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);
 	this->_M_toupper = this->_M_c_locale_ctype->__ctype_toupper;
 	this->_M_tolower = this->_M_c_locale_ctype->__ctype_tolower;
 	this->_M_table = this->_M_c_locale_ctype->__ctype_b;
       }
   }

   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_l("space", _M_c_locale_ctype);
 	break;
       case print:
 	__ret = __wctype_l("print", _M_c_locale_ctype);
 	break;
       case cntrl:
 	__ret = __wctype_l("cntrl", _M_c_locale_ctype);
 	break;
       case upper:
 	__ret = __wctype_l("upper", _M_c_locale_ctype);
 	break;
       case lower:
 	__ret = __wctype_l("lower", _M_c_locale_ctype);
 	break;
       case alpha:
 	__ret = __wctype_l("alpha", _M_c_locale_ctype);
 	break;
       case digit:
 	__ret = __wctype_l("digit", _M_c_locale_ctype);
 	break;
       case punct:
 	__ret = __wctype_l("punct", _M_c_locale_ctype);
 	break;
       case xdigit:
 	__ret = __wctype_l("xdigit", _M_c_locale_ctype);
 	break;
       case alnum:
 	__ret = __wctype_l("alnum", _M_c_locale_ctype);
 	break;
       case graph:
 	__ret = __wctype_l("graph", _M_c_locale_ctype);
 	break;
       case blank:
 	__ret = __wctype_l("blank", _M_c_locale_ctype);
 	break;
       default:
 	__ret = __wmask_type();
       }
     return __ret;
   }

   wchar_t
   ctype<wchar_t>::do_toupper(wchar_t __c) const
   { return __towupper_l(__c, _M_c_locale_ctype); }

   const wchar_t*
   ctype<wchar_t>::do_toupper(wchar_t* __lo, const wchar_t* __hi) const
   {
     while (__lo < __hi)
       {
         *__lo = __towupper_l(*__lo, _M_c_locale_ctype);
         ++__lo;
       }
     return __hi;
   }

   wchar_t
   ctype<wchar_t>::do_tolower(wchar_t __c) const
   { return __towlower_l(__c, _M_c_locale_ctype); }

   const wchar_t*
   ctype<wchar_t>::do_tolower(wchar_t* __lo, const wchar_t* __hi) const
   {
     while (__lo < __hi)
       {
         *__lo = __towlower_l(*__lo, _M_c_locale_ctype);
         ++__lo;
       }
     return __hi;
   }

   bool
   ctype<wchar_t>::
   do_is(mask __m, wchar_t __c) const
   {
     // The case of __m == ctype_base::space is particularly important,
     // due to its use in many istream functions.  Therefore we deal with
     // it first, exploiting the knowledge that on GNU systems _M_bit[5]
     // is the mask corresponding to ctype_base::space.  NB: an encoding
     // change would not affect correctness!
     bool __ret = false;
     if (__m == _M_bit[5])
       __ret = __iswctype_l(__c, _M_wmask[5], _M_c_locale_ctype);
     else
       {
 	// Highest bitmask in ctype_base == 11
 	const size_t __bitmasksize = 11;
 	for (size_t __bitcur = 0; __bitcur <= __bitmasksize; ++__bitcur)
 	  if (__m & _M_bit[__bitcur])
 	    {
 	      if (__iswctype_l(__c, _M_wmask[__bitcur], _M_c_locale_ctype))
 		{
 		  __ret = true;
 		  break;
 		}
 	      else if (__m == _M_bit[__bitcur])
 		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)
       {
 	// Highest bitmask in ctype_base == 11
 	const size_t __bitmasksize = 11;
 	mask __m = 0;
 	for (size_t __bitcur = 0; __bitcur <= __bitmasksize; ++__bitcur)
 	  if (__iswctype_l(*__lo, _M_wmask[__bitcur], _M_c_locale_ctype))
 	    __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];
 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2)
     __c_locale __old = __uselocale(_M_c_locale_ctype);
 #endif
     const int __c = wctob(__wc);
 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2)
     __uselocale(__old);
 #endif
     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 __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2)
     __c_locale __old = __uselocale(_M_c_locale_ctype);
 #endif
     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;
 	}
 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2)
     __uselocale(__old);
 #endif
     return __hi;
   }

   void
   ctype<wchar_t>::_M_initialize_ctype() throw()
   {
 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2)
     __c_locale __old = __uselocale(_M_c_locale_ctype);
 #endif
     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 __j = 0;
 	 __j < sizeof(_M_widen) / sizeof(wint_t); ++__j)
       _M_widen[__j] = btowc(__j);

     for (size_t __k = 0; __k <= 11; ++__k)
       {
 	_M_bit[__k] = static_cast<mask>(_ISbit(__k));
 	_M_wmask[__k] = _M_convert_to_wmask(_M_bit[__k]);
       }
 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2)
     __uselocale(__old);
 #endif
   }
 #endif //  _GLIBCXX_USE_WCHAR_T

 _GLIBCXX_END_NAMESPACE_VERSION
 } // namespace
	// std::ctype implementation details, GNU version -- C++ --

	// Copyright (C) 2001-2021 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 <cstdio>
	#include <bits/c++locale_internal.h>

	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);
	this->_M_toupper = this->_M_c_locale_ctype->__ctype_toupper;
	this->_M_tolower = this->_M_c_locale_ctype->__ctype_tolower;
	this->_M_table = this->_M_c_locale_ctype->__ctype_b;
	}
	}

	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_l("space", _M_c_locale_ctype);
	break;
	case print:
	__ret = __wctype_l("print", _M_c_locale_ctype);
	break;
	case cntrl:
	__ret = __wctype_l("cntrl", _M_c_locale_ctype);
	break;
	case upper:
	__ret = __wctype_l("upper", _M_c_locale_ctype);
	break;
	case lower:
	__ret = __wctype_l("lower", _M_c_locale_ctype);
	break;
	case alpha:
	__ret = __wctype_l("alpha", _M_c_locale_ctype);
	break;
	case digit:
	__ret = __wctype_l("digit", _M_c_locale_ctype);
	break;
	case punct:
	__ret = __wctype_l("punct", _M_c_locale_ctype);
	break;
	case xdigit:
	__ret = __wctype_l("xdigit", _M_c_locale_ctype);
	break;
	case alnum:
	__ret = __wctype_l("alnum", _M_c_locale_ctype);
	break;
	case graph:
	__ret = __wctype_l("graph", _M_c_locale_ctype);
	break;
	case blank:
	__ret = __wctype_l("blank", _M_c_locale_ctype);
	break;
	default:
	__ret = __wmask_type();
	}
	return __ret;
	}

	wchar_t
	ctype<wchar_t>::do_toupper(wchar_t __c) const
	{ return __towupper_l(__c, _M_c_locale_ctype); }

	const wchar_t*
	ctype<wchar_t>::do_toupper(wchar_t* __lo, const wchar_t* __hi) const
	{
	while (__lo < __hi)
	{
	__lo = __towupper_l(__lo, _M_c_locale_ctype);
	++__lo;
	}
	return __hi;
	}

	wchar_t
	ctype<wchar_t>::do_tolower(wchar_t __c) const
	{ return __towlower_l(__c, _M_c_locale_ctype); }

	const wchar_t*
	ctype<wchar_t>::do_tolower(wchar_t* __lo, const wchar_t* __hi) const
	{
	while (__lo < __hi)
	{
	__lo = __towlower_l(__lo, _M_c_locale_ctype);
	++__lo;
	}
	return __hi;
	}

	bool
	ctype<wchar_t>::
	do_is(mask __m, wchar_t __c) const
	{
	// The case of __m == ctype_base::space is particularly important,
	// due to its use in many istream functions. Therefore we deal with
	// it first, exploiting the knowledge that on GNU systems _M_bit[5]
	// is the mask corresponding to ctype_base::space. NB: an encoding
	// change would not affect correctness!
	bool __ret = false;
	if (__m == _M_bit[5])
	__ret = __iswctype_l(__c, _M_wmask[5], _M_c_locale_ctype);
	else
	{
	// Highest bitmask in ctype_base == 11
	const size_t __bitmasksize = 11;
	for (size_t __bitcur = 0; __bitcur <= __bitmasksize; ++__bitcur)
	if (__m & _M_bit[__bitcur])
	{
	if (__iswctype_l(__c, _M_wmask[__bitcur], _M_c_locale_ctype))
	{
	__ret = true;
	break;
	}
	else if (__m == _M_bit[__bitcur])
	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)
	{
	// Highest bitmask in ctype_base == 11
	const size_t __bitmasksize = 11;
	mask __m = 0;
	for (size_t __bitcur = 0; __bitcur <= __bitmasksize; ++__bitcur)
	if (__iswctype_l(*__lo, _M_wmask[__bitcur], _M_c_locale_ctype))
	__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];
	#if __GLIBC__ > 2 \|\| (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2)
	__c_locale __old = __uselocale(_M_c_locale_ctype);
	#endif
	const int __c = wctob(__wc);
	#if __GLIBC__ > 2 \|\| (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2)
	__uselocale(__old);
	#endif
	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 __GLIBC__ > 2 \|\| (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2)
	__c_locale __old = __uselocale(_M_c_locale_ctype);
	#endif
	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;
	}
	#if __GLIBC__ > 2 \|\| (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2)
	__uselocale(__old);
	#endif
	return __hi;
	}

	void
	ctype<wchar_t>::_M_initialize_ctype() throw()
	{
	#if __GLIBC__ > 2 \|\| (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2)
	__c_locale __old = __uselocale(_M_c_locale_ctype);
	#endif
	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 __j = 0;
	__j < sizeof(_M_widen) / sizeof(wint_t); ++__j)
	_M_widen[__j] = btowc(__j);

	for (size_t __k = 0; __k <= 11; ++__k)
	{
	_M_bit[__k] = static_cast<mask>(_ISbit(__k));
	_M_wmask[__k] = _M_convert_to_wmask(_M_bit[__k]);
	}
	#if __GLIBC__ > 2 \|\| (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2)
	__uselocale(__old);
	#endif
	}
	#endif // _GLIBCXX_USE_WCHAR_T

	_GLIBCXX_END_NAMESPACE_VERSION
	} // namespace