libstdc++-v3/src/locale.cc - gcc - Git at Google

 // Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004
 // 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 2, 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.

 // You should have received a copy of the GNU General Public License along
 // with this library; see the file COPYING.  If not, write to the Free
 // Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
 // USA.

 // As a special exception, you may use this file as part of a free software
 // library without restriction.  Specifically, if other files instantiate
 // templates or use macros or inline functions from this file, or you compile
 // this file and link it with other files to produce an executable, this
 // file does not by itself cause the resulting executable to be covered by
 // the GNU General Public License.  This exception does not however
 // invalidate any other reasons why the executable file might be covered by
 // the GNU General Public License.

 #include <clocale>
 #include <cstring>
 #include <cstdlib>     // For getenv
 #include <cctype>
 #include <cwctype>     // For towupper, etc.
 #include <locale>
 #include <bits/atomicity.h>

 namespace std
 {
   // Definitions for static const data members of locale.
   const locale::category 	locale::none;
   const locale::category 	locale::ctype;
   const locale::category 	locale::numeric;
   const locale::category 	locale::collate;
   const locale::category 	locale::time;
   const locale::category 	locale::monetary;
   const locale::category 	locale::messages;
   const locale::category 	locale::all;

   // These are no longer exported.
   locale::_Impl*                locale::_S_classic;
   locale::_Impl* 		locale::_S_global;
   const size_t 			locale::_S_categories_size;

 #ifdef __GTHREADS
   __gthread_once_t 		locale::_S_once = __GTHREAD_ONCE_INIT;
 #endif

   locale::locale(const locale& __other) throw()
   : _M_impl(__other._M_impl)
   { _M_impl->_M_add_reference(); }

   // This is used to initialize global and classic locales, and
   // assumes that the _Impl objects are constructed correctly.
   // The lack of a reference increment is intentional.
   locale::locale(_Impl* __ip) throw() : _M_impl(__ip)
   { }

   locale::~locale() throw()
   { _M_impl->_M_remove_reference(); }

   bool
   locale::operator==(const locale& __rhs) const throw()
   {
     bool __ret = false;
     if (_M_impl == __rhs._M_impl)
       __ret = true;
     else
       {
 	const string __name = this->name();
 	if (__name != "*" && __name == __rhs.name())
 	  __ret = true;
       }
     return __ret;
   }

   const locale&
   locale::operator=(const locale& __other) throw()
   {
     __other._M_impl->_M_add_reference();
     _M_impl->_M_remove_reference();
     _M_impl = __other._M_impl;
     return *this;
   }

   string
   locale::name() const
   {
     string __ret;
     if (_M_impl->_M_check_same_name())
       __ret = _M_impl->_M_names[0];
     else
       {
 	__ret += _S_categories[0];
 	__ret += '=';
 	__ret += _M_impl->_M_names[0];
 	for (size_t __i = 1; __i < _S_categories_size; ++__i)
 	  {
 	    __ret += ';';
 	    __ret += _S_categories[__i];
 	    __ret += '=';
 	    __ret += _M_impl->_M_names[__i];
 	  }
       }
     return __ret;
   }

   locale::category
   locale::_S_normalize_category(category __cat)
   {
     int __ret = 0;
     if (__cat == none || (__cat & all) && !(__cat & ~all))
       __ret = __cat;
     else
       {
 	// NB: May be a C-style "LC_ALL" category; convert.
 	switch (__cat)
 	  {
 	  case LC_COLLATE:
 	    __ret = collate;
 	    break;
 	  case LC_CTYPE:
 	    __ret = ctype;
 	    break;
 	  case LC_MONETARY:
 	    __ret = monetary;
 	    break;
 	  case LC_NUMERIC:
 	    __ret = numeric;
 	    break;
 	  case LC_TIME:
 	    __ret = time;
 	    break;
 #ifdef _GLIBCXX_HAVE_LC_MESSAGES
 	  case LC_MESSAGES:
 	    __ret = messages;
 	    break;
 #endif
 	  case LC_ALL:
 	    __ret = all;
 	    break;
 	  default:
 	    __throw_runtime_error(__N("locale::_S_normalize_category "
 				  "category not found"));
 	  }
       }
     return __ret;
   }

   // locale::facet
   __c_locale locale::facet::_S_c_locale;

   const char locale::facet::_S_c_name[2] = "C";

 #ifdef __GTHREADS
   __gthread_once_t locale::facet::_S_once = __GTHREAD_ONCE_INIT;
 #endif

   void
   locale::facet::_S_initialize_once()
   {
     // Initialize the underlying locale model.
     _S_create_c_locale(_S_c_locale, _S_c_name);
   }

   __c_locale
   locale::facet::_S_get_c_locale()
   {
 #ifdef __GHTREADS
     if (__gthread_active_p())
       __gthread_once(&_S_once, _S_initialize_once);
     else
 #endif
       {
 	if (!_S_c_locale)
 	  _S_initialize_once();
       }
     return _S_c_locale;
   }

   const char*
   locale::facet::_S_get_c_name()
   { return _S_c_name; }

   locale::facet::
   ~facet() { }

   // locale::_Impl
   locale::_Impl::
   ~_Impl() throw()
   {
     if (_M_facets)
       for (size_t __i = 0; __i < _M_facets_size; ++__i)
 	if (_M_facets[__i])
 	  _M_facets[__i]->_M_remove_reference();
     delete [] _M_facets;

     if (_M_caches)
       for (size_t __i = 0; __i < _M_facets_size; ++__i)
 	if (_M_caches[__i])
 	  _M_caches[__i]->_M_remove_reference();
     delete [] _M_caches;

     if (_M_names)
       for (size_t __i = 0; __i < _S_categories_size; ++__i)
 	delete [] _M_names[__i];
     delete [] _M_names;
   }

   // Clone existing _Impl object.
   locale::_Impl::
   _Impl(const _Impl& __imp, size_t __refs)
   : _M_refcount(__refs), _M_facets(0), _M_facets_size(__imp._M_facets_size),
   _M_caches(0), _M_names(0)
   {
     try
       {
 	_M_facets = new const facet*[_M_facets_size];
 	for (size_t __i = 0; __i < _M_facets_size; ++__i)
 	  {
 	    _M_facets[__i] = __imp._M_facets[__i];
 	    if (_M_facets[__i])
 	      _M_facets[__i]->_M_add_reference();
 	  }
 	_M_caches = new const facet*[_M_facets_size];
 	for (size_t __j = 0; __j < _M_facets_size; ++__j)
 	  {
 	    _M_caches[__j] = __imp._M_caches[__j];
 	    if (_M_caches[__j])
 	      _M_caches[__j]->_M_add_reference();
 	  }
 	_M_names = new char*[_S_categories_size];
 	for (size_t __k = 0; __k < _S_categories_size; ++__k)
 	  _M_names[__k] = 0;

 	// Name all the categories.
 	for (size_t __l = 0; __l < _S_categories_size; ++__l)
 	  {
 	    char* __new = new char[std::strlen(__imp._M_names[__l]) + 1];
 	    std::strcpy(__new, __imp._M_names[__l]);
 	    _M_names[__l] = __new;
 	  }
       }
     catch(...)
       {
 	this->~_Impl();
 	__throw_exception_again;
       }
   }

   void
   locale::_Impl::
   _M_replace_category(const _Impl* __imp,
 		      const locale::id* const* __idpp)
   {
     for (; *__idpp; ++__idpp)
       _M_replace_facet(__imp, *__idpp);
   }

   void
   locale::_Impl::
   _M_replace_facet(const _Impl* __imp, const locale::id* __idp)
   {
     size_t __index = __idp->_M_id();
     if ((__index > (__imp->_M_facets_size - 1))
 	|| !__imp->_M_facets[__index])
       __throw_runtime_error(__N("locale::_Impl::_M_replace_facet"));
     _M_install_facet(__idp, __imp->_M_facets[__index]);
   }

   void
   locale::_Impl::
   _M_install_facet(const locale::id* __idp, const facet* __fp)
   {
     if (__fp)
       {
 	size_t __index = __idp->_M_id();

 	// Check size of facet vector to ensure adequate room.
 	if (__index > _M_facets_size - 1)
 	  {
 	    const size_t __new_size = __index + 4;

 	    // New facet array.
 	    const facet** __oldf = _M_facets;
 	    const facet** __newf;
 	    __newf = new const facet*[__new_size];
 	    for (size_t __i = 0; __i < _M_facets_size; ++__i)
 	      __newf[__i] = _M_facets[__i];
 	    for (size_t __l = _M_facets_size; __l < __new_size; ++__l)
 	      __newf[__l] = 0;

 	    // New cache array.
 	    const facet** __oldc = _M_caches;
 	    const facet** __newc;
 	    try
 	      {
 		__newc = new const facet*[__new_size];
 	      }
 	    catch(...)
 	      {
 		delete [] __newf;
 		__throw_exception_again;
 	      }
 	    for (size_t __j = 0; __j < _M_facets_size; ++__j)
 	      __newc[__j] = _M_caches[__j];
 	    for (size_t __k = _M_facets_size; __k < __new_size; ++__k)
 	      __newc[__k] = 0;

 	    _M_facets_size = __new_size;
 	    _M_facets = __newf;
 	    _M_caches = __newc;
 	    delete [] __oldf;
 	    delete [] __oldc;
 	  }

 	__fp->_M_add_reference();
 	const facet*& __fpr = _M_facets[__index];
 	if (__fpr)
 	  {
 	    // Replacing an existing facet. Order matters.
 	    __fpr->_M_remove_reference();
 	    __fpr = __fp;
 	  }
 	else
 	  {
 	    // Installing a newly created facet into an empty
 	    // _M_facets container, say a newly-constructed,
 	    // swanky-fresh _Impl.
 	    _M_facets[__index] = __fp;
 	  }

 	// Ideally, it would be nice to only remove the caches that
 	// are now incorrect. However, some of the caches depend on
 	// multiple facets, and we only know about one facet
 	// here. It's no great loss: the first use of the new facet
 	// will create a new, correctly cached facet anyway.
 	for (size_t __i = 0; __i < _M_facets_size; ++__i)
 	  {
 	    const facet* __cpr = _M_caches[__i];
 	    if (__cpr)
 	      {
 		__cpr->_M_remove_reference();
 		_M_caches[__i] = 0;
 	      }
 	  }
       }
   }


   // locale::id
   // Definitions for static const data members of locale::id
   _Atomic_word locale::id::_S_refcount;  // init'd to 0 by linker

   size_t
   locale::id::_M_id() const
   {
     if (!_M_index)
       _M_index = 1 + __gnu_cxx::__exchange_and_add(&_S_refcount, 1);
     return _M_index - 1;
   }
 } // namespace std
	// Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004
	// 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 2, 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.

	// You should have received a copy of the GNU General Public License along
	// with this library; see the file COPYING. If not, write to the Free
	// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
	// USA.

	// As a special exception, you may use this file as part of a free software
	// library without restriction. Specifically, if other files instantiate
	// templates or use macros or inline functions from this file, or you compile
	// this file and link it with other files to produce an executable, this
	// file does not by itself cause the resulting executable to be covered by
	// the GNU General Public License. This exception does not however
	// invalidate any other reasons why the executable file might be covered by
	// the GNU General Public License.

	#include <clocale>
	#include <cstring>
	#include <cstdlib> // For getenv
	#include <cctype>
	#include <cwctype> // For towupper, etc.
	#include <locale>
	#include <bits/atomicity.h>

	namespace std
	{
	// Definitions for static const data members of locale.
	const locale::category locale::none;
	const locale::category locale::ctype;
	const locale::category locale::numeric;
	const locale::category locale::collate;
	const locale::category locale::time;
	const locale::category locale::monetary;
	const locale::category locale::messages;
	const locale::category locale::all;

	// These are no longer exported.
	locale::_Impl* locale::_S_classic;
	locale::_Impl* locale::_S_global;
	const size_t locale::_S_categories_size;

	#ifdef __GTHREADS
	__gthread_once_t locale::_S_once = __GTHREAD_ONCE_INIT;
	#endif

	locale::locale(const locale& __other) throw()
	: _M_impl(__other._M_impl)
	{ _M_impl->_M_add_reference(); }

	// This is used to initialize global and classic locales, and
	// assumes that the _Impl objects are constructed correctly.
	// The lack of a reference increment is intentional.
	locale::locale(_Impl* __ip) throw() : _M_impl(__ip)
	{ }

	locale::~locale() throw()
	{ _M_impl->_M_remove_reference(); }

	bool
	locale::operator==(const locale& __rhs) const throw()
	{
	bool __ret = false;
	if (_M_impl == __rhs._M_impl)
	__ret = true;
	else
	{
	const string __name = this->name();
	if (__name != "*" && __name == __rhs.name())
	__ret = true;
	}
	return __ret;
	}

	const locale&
	locale::operator=(const locale& __other) throw()
	{
	__other._M_impl->_M_add_reference();
	_M_impl->_M_remove_reference();
	_M_impl = __other._M_impl;
	return *this;
	}

	string
	locale::name() const
	{
	string __ret;
	if (_M_impl->_M_check_same_name())
	__ret = _M_impl->_M_names[0];
	else
	{
	__ret += _S_categories[0];
	__ret += '=';
	__ret += _M_impl->_M_names[0];
	for (size_t __i = 1; __i < _S_categories_size; ++__i)
	{
	__ret += ';';
	__ret += _S_categories[__i];
	__ret += '=';
	__ret += _M_impl->_M_names[__i];
	}
	}
	return __ret;
	}

	locale::category
	locale::_S_normalize_category(category __cat)
	{
	int __ret = 0;
	if (__cat == none \|\| (__cat & all) && !(__cat & ~all))
	__ret = __cat;
	else
	{
	// NB: May be a C-style "LC_ALL" category; convert.
	switch (__cat)
	{
	case LC_COLLATE:
	__ret = collate;
	break;
	case LC_CTYPE:
	__ret = ctype;
	break;
	case LC_MONETARY:
	__ret = monetary;
	break;
	case LC_NUMERIC:
	__ret = numeric;
	break;
	case LC_TIME:
	__ret = time;
	break;
	#ifdef _GLIBCXX_HAVE_LC_MESSAGES
	case LC_MESSAGES:
	__ret = messages;
	break;
	#endif
	case LC_ALL:
	__ret = all;
	break;
	default:
	__throw_runtime_error(__N("locale::_S_normalize_category "
	"category not found"));
	}
	}
	return __ret;
	}

	// locale::facet
	__c_locale locale::facet::_S_c_locale;

	const char locale::facet::_S_c_name[2] = "C";

	#ifdef __GTHREADS
	__gthread_once_t locale::facet::_S_once = __GTHREAD_ONCE_INIT;
	#endif

	void
	locale::facet::_S_initialize_once()
	{
	// Initialize the underlying locale model.
	_S_create_c_locale(_S_c_locale, _S_c_name);
	}

	__c_locale
	locale::facet::_S_get_c_locale()
	{
	#ifdef __GHTREADS
	if (__gthread_active_p())
	__gthread_once(&_S_once, _S_initialize_once);
	else
	#endif
	{
	if (!_S_c_locale)
	_S_initialize_once();
	}
	return _S_c_locale;
	}

	const char*
	locale::facet::_S_get_c_name()
	{ return _S_c_name; }

	locale::facet::
	~facet() { }

	// locale::_Impl
	locale::_Impl::
	~_Impl() throw()
	{
	if (_M_facets)
	for (size_t __i = 0; __i < _M_facets_size; ++__i)
	if (_M_facets[__i])
	_M_facets[__i]->_M_remove_reference();
	delete [] _M_facets;

	if (_M_caches)
	for (size_t __i = 0; __i < _M_facets_size; ++__i)
	if (_M_caches[__i])
	_M_caches[__i]->_M_remove_reference();
	delete [] _M_caches;

	if (_M_names)
	for (size_t __i = 0; __i < _S_categories_size; ++__i)
	delete [] _M_names[__i];
	delete [] _M_names;
	}

	// Clone existing _Impl object.
	locale::_Impl::
	_Impl(const _Impl& __imp, size_t __refs)
	: _M_refcount(__refs), _M_facets(0), _M_facets_size(__imp._M_facets_size),
	_M_caches(0), _M_names(0)
	{
	try
	{
	_M_facets = new const facet*[_M_facets_size];
	for (size_t __i = 0; __i < _M_facets_size; ++__i)
	{
	_M_facets[__i] = __imp._M_facets[__i];
	if (_M_facets[__i])
	_M_facets[__i]->_M_add_reference();
	}
	_M_caches = new const facet*[_M_facets_size];
	for (size_t __j = 0; __j < _M_facets_size; ++__j)
	{
	_M_caches[__j] = __imp._M_caches[__j];
	if (_M_caches[__j])
	_M_caches[__j]->_M_add_reference();
	}
	_M_names = new char*[_S_categories_size];
	for (size_t __k = 0; __k < _S_categories_size; ++__k)
	_M_names[__k] = 0;

	// Name all the categories.
	for (size_t __l = 0; __l < _S_categories_size; ++__l)
	{
	char* __new = new char[std::strlen(__imp._M_names[__l]) + 1];
	std::strcpy(__new, __imp._M_names[__l]);
	_M_names[__l] = __new;
	}
	}
	catch(...)
	{
	this->~_Impl();
	__throw_exception_again;
	}
	}

	void
	locale::_Impl::
	_M_replace_category(const _Impl* __imp,
	const locale::id* const* __idpp)
	{
	for (; *__idpp; ++__idpp)
	_M_replace_facet(__imp, *__idpp);
	}

	void
	locale::_Impl::
	_M_replace_facet(const _Impl* __imp, const locale::id* __idp)
	{
	size_t __index = __idp->_M_id();
	if ((__index > (__imp->_M_facets_size - 1))
	\|\| !__imp->_M_facets[__index])
	__throw_runtime_error(__N("locale::_Impl::_M_replace_facet"));
	_M_install_facet(__idp, __imp->_M_facets[__index]);
	}

	void
	locale::_Impl::
	_M_install_facet(const locale::id* __idp, const facet* __fp)
	{
	if (__fp)
	{
	size_t __index = __idp->_M_id();

	// Check size of facet vector to ensure adequate room.
	if (__index > _M_facets_size - 1)
	{
	const size_t __new_size = __index + 4;

	// New facet array.
	const facet** __oldf = _M_facets;
	const facet** __newf;
	__newf = new const facet*[__new_size];
	for (size_t __i = 0; __i < _M_facets_size; ++__i)
	__newf[__i] = _M_facets[__i];
	for (size_t __l = _M_facets_size; __l < __new_size; ++__l)
	__newf[__l] = 0;

	// New cache array.
	const facet** __oldc = _M_caches;
	const facet** __newc;
	try
	{
	__newc = new const facet*[__new_size];
	}
	catch(...)
	{
	delete [] __newf;
	__throw_exception_again;
	}
	for (size_t __j = 0; __j < _M_facets_size; ++__j)
	__newc[__j] = _M_caches[__j];
	for (size_t __k = _M_facets_size; __k < __new_size; ++__k)
	__newc[__k] = 0;

	_M_facets_size = __new_size;
	_M_facets = __newf;
	_M_caches = __newc;
	delete [] __oldf;
	delete [] __oldc;
	}

	__fp->_M_add_reference();
	const facet*& __fpr = _M_facets[__index];
	if (__fpr)
	{
	// Replacing an existing facet. Order matters.
	__fpr->_M_remove_reference();
	__fpr = __fp;
	}
	else
	{
	// Installing a newly created facet into an empty
	// _M_facets container, say a newly-constructed,
	// swanky-fresh _Impl.
	_M_facets[__index] = __fp;
	}

	// Ideally, it would be nice to only remove the caches that
	// are now incorrect. However, some of the caches depend on
	// multiple facets, and we only know about one facet
	// here. It's no great loss: the first use of the new facet
	// will create a new, correctly cached facet anyway.
	for (size_t __i = 0; __i < _M_facets_size; ++__i)
	{
	const facet* __cpr = _M_caches[__i];
	if (__cpr)
	{
	__cpr->_M_remove_reference();
	_M_caches[__i] = 0;
	}
	}
	}
	}


	// locale::id
	// Definitions for static const data members of locale::id
	_Atomic_word locale::id::_S_refcount; // init'd to 0 by linker

	size_t
	locale::id::_M_id() const
	{
	if (!_M_index)
	_M_index = 1 + __gnu_cxx::__exchange_and_add(&_S_refcount, 1);
	return _M_index - 1;
	}
	} // namespace std