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// Copyright (C) 1997-2015 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

// .

#define _GLIBCXX_USE_CXX11_ABI 1

#include 

#include 

#include      // For getenv

#include 

#include      // For towupper, etc.

#include 

#include 

namespace

{

  __gnu_cxx::__mutex&

  get_locale_cache_mutex()

  {

    static __gnu_cxx::__mutex locale_cache_mutex;

    return locale_cache_mutex;

  }

} // anonymous namespace

// XXX GLIBCXX_ABI Deprecated

#ifdef _GLIBCXX_LONG_DOUBLE_COMPAT

# define _GLIBCXX_LOC_ID(mangled) extern std::locale::id mangled

_GLIBCXX_LOC_ID (_ZNSt7num_getIcSt19istreambuf_iteratorIcSt11char_traitsIcEEE2idE);

_GLIBCXX_LOC_ID (_ZNSt7num_putIcSt19ostreambuf_iteratorIcSt11char_traitsIcEEE2idE);

_GLIBCXX_LOC_ID (_ZNSt9money_getIcSt19istreambuf_iteratorIcSt11char_traitsIcEEE2idE);

_GLIBCXX_LOC_ID (_ZNSt9money_putIcSt19ostreambuf_iteratorIcSt11char_traitsIcEEE2idE);

# ifdef _GLIBCXX_USE_WCHAR_T

_GLIBCXX_LOC_ID (_ZNSt7num_getIwSt19istreambuf_iteratorIwSt11char_traitsIwEEE2idE);

_GLIBCXX_LOC_ID (_ZNSt7num_putIwSt19ostreambuf_iteratorIwSt11char_traitsIwEEE2idE);

_GLIBCXX_LOC_ID (_ZNSt9money_getIwSt19istreambuf_iteratorIwSt11char_traitsIwEEE2idE);

_GLIBCXX_LOC_ID (_ZNSt9money_putIwSt19ostreambuf_iteratorIwSt11char_traitsIwEEE2idE);

# endif

#endif

namespace std _GLIBCXX_VISIBILITY(default)

{

_GLIBCXX_BEGIN_NAMESPACE_VERSION

  // 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;

#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()

  {

    // Deal first with the common cases, fast to process: refcopies,

    // unnamed (i.e., !_M_names[0]), "simple" (!_M_names[1] => all the

    // categories same name, i.e., _M_names[0]). Otherwise fall back

    // to the general locale::name().

    bool __ret;

    if (_M_impl == __rhs._M_impl)

      __ret = true;

    else if (!_M_impl->_M_names[0] || !__rhs._M_impl->_M_names[0]

	     || std::strcmp(_M_impl->_M_names[0],

			    __rhs._M_impl->_M_names[0]) != 0)

      __ret = false;

    else if (!_M_impl->_M_names[1] && !__rhs._M_impl->_M_names[1])

      __ret = true;

    else

      __ret = this->name() == __rhs.name();

    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;

  }

  _GLIBCXX_DEFAULT_ABI_TAG

  string

  locale::name() const

  {

    string __ret;

    if (!_M_impl->_M_names[0])

      __ret = '*';

    else if (_M_impl->_M_check_same_name())

      __ret = _M_impl->_M_names[0];

    else

      {

	__ret.reserve(128);

	__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 __GTHREADS

    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() throw()

  { 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 the categories.

	for (size_t __l = 0; (__l < _S_categories_size

			      && __imp._M_names[__l]); ++__l)

	  {

	    const size_t __len = std::strlen(__imp._M_names[__l]) + 1;

	    _M_names[__l] = new char[__len];

	    std::memcpy(_M_names[__l], __imp._M_names[__l], __len);

	  }

      }

    __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)

	  {

#if _GLIBCXX_USE_DUAL_ABI

            // If this is a twinned facet replace its twin with a shim.

            for (const id* const* p = _S_twinned_facets; *p != 0; p += 2)

              {

                if (p[0]->_M_id() == __index)

                  {

                    // replacing the old ABI facet, also replace new ABI twin

                    const facet*& __fpr2 = _M_facets[p[1]->_M_id()];

                    if (__fpr2)

                      {

                        const facet* __fp2 = __fp->_M_sso_shim(p[1]);

                        __fp2->_M_add_reference();

                        __fpr2->_M_remove_reference();

                        __fpr2 = __fp2;

                      }

                    break;

                  }

                else if (p[1]->_M_id() == __index)

                  {

                    // replacing the new ABI facet, also replace old ABI twin

                    const facet*& __fpr2 = _M_facets[p[0]->_M_id()];

                    if (__fpr2)

                      {

                        const facet* __fp2 = __fp->_M_cow_shim(p[0]);

                        __fp2->_M_add_reference();

                        __fpr2->_M_remove_reference();

                        __fpr2 = __fp2;

                      }

                    break;

                  }

              }

#endif

	    // 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;

	      }

	  }

      }

  }

  void

  locale::_Impl::

  _M_install_cache(const facet* __cache, size_t __index)

  {

    __gnu_cxx::__scoped_lock sentry(get_locale_cache_mutex());

#if _GLIBCXX_USE_DUAL_ABI

    // If this cache is for one of the facets that is instantiated twice,

    // for old and new std::string ABI, install it in both slots.

    size_t __index2 = -1;

    for (const id* const* p = _S_twinned_facets; *p != 0; p += 2)

      {

        if (p[0]->_M_id() == __index)

          {

            __index2 = p[1]->_M_id();

            break;

          }

        else if (p[1]->_M_id() == __index)

          {

            __index2 = __index;

            __index = p[0]->_M_id();

            break;

          }

      }

#endif

    if (_M_caches[__index] != 0)

      {

	// Some other thread got in first.

	delete __cache;

      }

    else

      {

	__cache->_M_add_reference();

	_M_caches[__index] = __cache;

#if _GLIBCXX_USE_DUAL_ABI

        if (__index2 != size_t(-1))

          {

            __cache->_M_add_reference();

            _M_caches[__index2] = __cache;

          }

#endif

      }

  }

  // 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 throw()

  {

    if (!_M_index)

      {

	// XXX GLIBCXX_ABI Deprecated

#ifdef _GLIBCXX_LONG_DOUBLE_COMPAT

	locale::id *f = 0;

# define _GLIBCXX_SYNC_ID(facet, mangled) \

	if (this == &::mangled)				\

	  f = &facet::id

	_GLIBCXX_SYNC_ID (num_get, _ZNSt7num_getIcSt19istreambuf_iteratorIcSt11char_traitsIcEEE2idE);

	_GLIBCXX_SYNC_ID (num_put, _ZNSt7num_putIcSt19ostreambuf_iteratorIcSt11char_traitsIcEEE2idE);

	_GLIBCXX_SYNC_ID (money_get, _ZNSt9money_getIcSt19istreambuf_iteratorIcSt11char_traitsIcEEE2idE);

	_GLIBCXX_SYNC_ID (money_put, _ZNSt9money_putIcSt19ostreambuf_iteratorIcSt11char_traitsIcEEE2idE);

# ifdef _GLIBCXX_USE_WCHAR_T

	_GLIBCXX_SYNC_ID (num_get, _ZNSt7num_getIwSt19istreambuf_iteratorIwSt11char_traitsIwEEE2idE);

	_GLIBCXX_SYNC_ID (num_put, _ZNSt7num_putIwSt19ostreambuf_iteratorIwSt11char_traitsIwEEE2idE);

	_GLIBCXX_SYNC_ID (money_get, _ZNSt9money_getIwSt19istreambuf_iteratorIwSt11char_traitsIwEEE2idE);

	_GLIBCXX_SYNC_ID (money_put, _ZNSt9money_putIwSt19ostreambuf_iteratorIwSt11char_traitsIwEEE2idE);

# endif

	if (f)

	  _M_index = 1 + f->_M_id();

	else

#endif

	  _M_index = 1 + __gnu_cxx::__exchange_and_add_dispatch(&_S_refcount,

								1);

      }

    return _M_index - 1;

  }

_GLIBCXX_END_NAMESPACE_VERSION

} // namespace