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locale.cpp
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//===------------------------- locale.cpp ---------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// On Solaris, we need to define something to make the C99 parts of localeconv
// visible.
#ifdef __sun__
#define _LCONV_C99
#endif
#include "string"
#include "locale"
#include "codecvt"
#include "vector"
#include "algorithm"
#include "typeinfo"
#ifndef _LIBCPP_NO_EXCEPTIONS
# include "type_traits"
#endif
#include "clocale"
#include "cstring"
#if defined(_LIBCPP_MSVCRT)
#define _CTYPE_DISABLE_MACROS
#endif
#include "cwctype"
#include "__sso_allocator"
#if defined(_LIBCPP_MSVCRT) || defined(__MINGW32__)
#include "support/win32/locale_win32.h"
#elif !defined(__BIONIC__)
#include <langinfo.h>
#endif
#include <stdlib.h>
#include <stdio.h>
#include "include/atomic_support.h"
#include "__undef_macros"
// On Linux, wint_t and wchar_t have different signed-ness, and this causes
// lots of noise in the build log, but no bugs that I know of.
#if defined(__clang__)
#pragma clang diagnostic ignored "-Wsign-conversion"
#endif
_LIBCPP_BEGIN_NAMESPACE_STD
struct __libcpp_unique_locale {
__libcpp_unique_locale(const char* nm) : __loc_(newlocale(LC_ALL_MASK, nm, 0)) {}
~__libcpp_unique_locale() {
if (__loc_)
freelocale(__loc_);
}
explicit operator bool() const { return __loc_; }
locale_t& get() { return __loc_; }
locale_t __loc_;
private:
__libcpp_unique_locale(__libcpp_unique_locale const&);
__libcpp_unique_locale& operator=(__libcpp_unique_locale const&);
};
#ifdef __cloc_defined
locale_t __cloc() {
// In theory this could create a race condition. In practice
// the race condition is non-fatal since it will just create
// a little resource leak. Better approach would be appreciated.
static locale_t result = newlocale(LC_ALL_MASK, "C", 0);
return result;
}
#endif // __cloc_defined
namespace {
struct release
{
void operator()(locale::facet* p) {p->__release_shared();}
};
template <class T, class A0>
inline
T&
make(A0 a0)
{
static typename aligned_storage<sizeof(T)>::type buf;
auto *obj = ::new (&buf) T(a0);
return *obj;
}
template <class T, class A0, class A1>
inline
T&
make(A0 a0, A1 a1)
{
static typename aligned_storage<sizeof(T)>::type buf;
::new (&buf) T(a0, a1);
return *reinterpret_cast<T*>(&buf);
}
template <class T, class A0, class A1, class A2>
inline
T&
make(A0 a0, A1 a1, A2 a2)
{
static typename aligned_storage<sizeof(T)>::type buf;
auto *obj = ::new (&buf) T(a0, a1, a2);
return *obj;
}
template <typename T, size_t N>
inline
_LIBCPP_CONSTEXPR
size_t
countof(const T (&)[N])
{
return N;
}
template <typename T>
inline
_LIBCPP_CONSTEXPR
size_t
countof(const T * const begin, const T * const end)
{
return static_cast<size_t>(end - begin);
}
_LIBCPP_NORETURN static void __throw_runtime_error(const string &msg)
{
#ifndef _LIBCPP_NO_EXCEPTIONS
throw runtime_error(msg);
#else
(void)msg;
_VSTD::abort();
#endif
}
}
#if defined(_AIX)
// Set priority to INT_MIN + 256 + 150
# pragma priority ( -2147483242 )
#endif
const locale::category locale::none;
const locale::category locale::collate;
const locale::category locale::ctype;
const locale::category locale::monetary;
const locale::category locale::numeric;
const locale::category locale::time;
const locale::category locale::messages;
const locale::category locale::all;
class _LIBCPP_HIDDEN locale::__imp
: public facet
{
enum {N = 28};
#if defined(_LIBCPP_COMPILER_MSVC)
// FIXME: MSVC doesn't support aligned parameters by value.
// I can't get the __sso_allocator to work here
// for MSVC I think for this reason.
vector<facet*> facets_;
#else
vector<facet*, __sso_allocator<facet*, N> > facets_;
#endif
string name_;
public:
explicit __imp(size_t refs = 0);
explicit __imp(const string& name, size_t refs = 0);
__imp(const __imp&);
__imp(const __imp&, const string&, locale::category c);
__imp(const __imp& other, const __imp& one, locale::category c);
__imp(const __imp&, facet* f, long id);
~__imp();
const string& name() const {return name_;}
bool has_facet(long id) const
{return static_cast<size_t>(id) < facets_.size() && facets_[static_cast<size_t>(id)];}
const locale::facet* use_facet(long id) const;
static const locale& make_classic();
static locale& make_global();
private:
void install(facet* f, long id);
template <class F> void install(F* f) {install(f, f->id.__get());}
template <class F> void install_from(const __imp& other);
};
locale::__imp::__imp(size_t refs)
: facet(refs),
facets_(N),
name_("C")
{
facets_.clear();
install(&make<_VSTD::collate<char> >(1u));
install(&make<_VSTD::collate<wchar_t> >(1u));
install(&make<_VSTD::ctype<char> >(nullptr, false, 1u));
install(&make<_VSTD::ctype<wchar_t> >(1u));
install(&make<codecvt<char, char, mbstate_t> >(1u));
install(&make<codecvt<wchar_t, char, mbstate_t> >(1u));
install(&make<codecvt<char16_t, char, mbstate_t> >(1u));
install(&make<codecvt<char32_t, char, mbstate_t> >(1u));
install(&make<numpunct<char> >(1u));
install(&make<numpunct<wchar_t> >(1u));
install(&make<num_get<char> >(1u));
install(&make<num_get<wchar_t> >(1u));
install(&make<num_put<char> >(1u));
install(&make<num_put<wchar_t> >(1u));
install(&make<moneypunct<char, false> >(1u));
install(&make<moneypunct<char, true> >(1u));
install(&make<moneypunct<wchar_t, false> >(1u));
install(&make<moneypunct<wchar_t, true> >(1u));
install(&make<money_get<char> >(1u));
install(&make<money_get<wchar_t> >(1u));
install(&make<money_put<char> >(1u));
install(&make<money_put<wchar_t> >(1u));
install(&make<time_get<char> >(1u));
install(&make<time_get<wchar_t> >(1u));
install(&make<time_put<char> >(1u));
install(&make<time_put<wchar_t> >(1u));
install(&make<_VSTD::messages<char> >(1u));
install(&make<_VSTD::messages<wchar_t> >(1u));
}
locale::__imp::__imp(const string& name, size_t refs)
: facet(refs),
facets_(N),
name_(name)
{
#ifndef _LIBCPP_NO_EXCEPTIONS
try
{
#endif // _LIBCPP_NO_EXCEPTIONS
facets_ = locale::classic().__locale_->facets_;
for (unsigned i = 0; i < facets_.size(); ++i)
if (facets_[i])
facets_[i]->__add_shared();
install(new collate_byname<char>(name_));
install(new collate_byname<wchar_t>(name_));
install(new ctype_byname<char>(name_));
install(new ctype_byname<wchar_t>(name_));
install(new codecvt_byname<char, char, mbstate_t>(name_));
install(new codecvt_byname<wchar_t, char, mbstate_t>(name_));
install(new codecvt_byname<char16_t, char, mbstate_t>(name_));
install(new codecvt_byname<char32_t, char, mbstate_t>(name_));
install(new numpunct_byname<char>(name_));
install(new numpunct_byname<wchar_t>(name_));
install(new moneypunct_byname<char, false>(name_));
install(new moneypunct_byname<char, true>(name_));
install(new moneypunct_byname<wchar_t, false>(name_));
install(new moneypunct_byname<wchar_t, true>(name_));
install(new time_get_byname<char>(name_));
install(new time_get_byname<wchar_t>(name_));
install(new time_put_byname<char>(name_));
install(new time_put_byname<wchar_t>(name_));
install(new messages_byname<char>(name_));
install(new messages_byname<wchar_t>(name_));
#ifndef _LIBCPP_NO_EXCEPTIONS
}
catch (...)
{
for (unsigned i = 0; i < facets_.size(); ++i)
if (facets_[i])
facets_[i]->__release_shared();
throw;
}
#endif // _LIBCPP_NO_EXCEPTIONS
}
// NOTE avoid the `base class should be explicitly initialized in the
// copy constructor` warning emitted by GCC
#if defined(__clang__) || _GNUC_VER >= 406
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wextra"
#endif
locale::__imp::__imp(const __imp& other)
: facets_(max<size_t>(N, other.facets_.size())),
name_(other.name_)
{
facets_ = other.facets_;
for (unsigned i = 0; i < facets_.size(); ++i)
if (facets_[i])
facets_[i]->__add_shared();
}
#if defined(__clang__) || _GNUC_VER >= 406
#pragma GCC diagnostic pop
#endif
locale::__imp::__imp(const __imp& other, const string& name, locale::category c)
: facets_(N),
name_("*")
{
facets_ = other.facets_;
for (unsigned i = 0; i < facets_.size(); ++i)
if (facets_[i])
facets_[i]->__add_shared();
#ifndef _LIBCPP_NO_EXCEPTIONS
try
{
#endif // _LIBCPP_NO_EXCEPTIONS
if (c & locale::collate)
{
install(new collate_byname<char>(name));
install(new collate_byname<wchar_t>(name));
}
if (c & locale::ctype)
{
install(new ctype_byname<char>(name));
install(new ctype_byname<wchar_t>(name));
install(new codecvt_byname<char, char, mbstate_t>(name));
install(new codecvt_byname<wchar_t, char, mbstate_t>(name));
install(new codecvt_byname<char16_t, char, mbstate_t>(name));
install(new codecvt_byname<char32_t, char, mbstate_t>(name));
}
if (c & locale::monetary)
{
install(new moneypunct_byname<char, false>(name));
install(new moneypunct_byname<char, true>(name));
install(new moneypunct_byname<wchar_t, false>(name));
install(new moneypunct_byname<wchar_t, true>(name));
}
if (c & locale::numeric)
{
install(new numpunct_byname<char>(name));
install(new numpunct_byname<wchar_t>(name));
}
if (c & locale::time)
{
install(new time_get_byname<char>(name));
install(new time_get_byname<wchar_t>(name));
install(new time_put_byname<char>(name));
install(new time_put_byname<wchar_t>(name));
}
if (c & locale::messages)
{
install(new messages_byname<char>(name));
install(new messages_byname<wchar_t>(name));
}
#ifndef _LIBCPP_NO_EXCEPTIONS
}
catch (...)
{
for (unsigned i = 0; i < facets_.size(); ++i)
if (facets_[i])
facets_[i]->__release_shared();
throw;
}
#endif // _LIBCPP_NO_EXCEPTIONS
}
template<class F>
inline
void
locale::__imp::install_from(const locale::__imp& one)
{
long id = F::id.__get();
install(const_cast<F*>(static_cast<const F*>(one.use_facet(id))), id);
}
locale::__imp::__imp(const __imp& other, const __imp& one, locale::category c)
: facets_(N),
name_("*")
{
facets_ = other.facets_;
for (unsigned i = 0; i < facets_.size(); ++i)
if (facets_[i])
facets_[i]->__add_shared();
#ifndef _LIBCPP_NO_EXCEPTIONS
try
{
#endif // _LIBCPP_NO_EXCEPTIONS
if (c & locale::collate)
{
install_from<_VSTD::collate<char> >(one);
install_from<_VSTD::collate<wchar_t> >(one);
}
if (c & locale::ctype)
{
install_from<_VSTD::ctype<char> >(one);
install_from<_VSTD::ctype<wchar_t> >(one);
install_from<_VSTD::codecvt<char, char, mbstate_t> >(one);
install_from<_VSTD::codecvt<char16_t, char, mbstate_t> >(one);
install_from<_VSTD::codecvt<char32_t, char, mbstate_t> >(one);
install_from<_VSTD::codecvt<wchar_t, char, mbstate_t> >(one);
}
if (c & locale::monetary)
{
install_from<moneypunct<char, false> >(one);
install_from<moneypunct<char, true> >(one);
install_from<moneypunct<wchar_t, false> >(one);
install_from<moneypunct<wchar_t, true> >(one);
install_from<money_get<char> >(one);
install_from<money_get<wchar_t> >(one);
install_from<money_put<char> >(one);
install_from<money_put<wchar_t> >(one);
}
if (c & locale::numeric)
{
install_from<numpunct<char> >(one);
install_from<numpunct<wchar_t> >(one);
install_from<num_get<char> >(one);
install_from<num_get<wchar_t> >(one);
install_from<num_put<char> >(one);
install_from<num_put<wchar_t> >(one);
}
if (c & locale::time)
{
install_from<time_get<char> >(one);
install_from<time_get<wchar_t> >(one);
install_from<time_put<char> >(one);
install_from<time_put<wchar_t> >(one);
}
if (c & locale::messages)
{
install_from<_VSTD::messages<char> >(one);
install_from<_VSTD::messages<wchar_t> >(one);
}
#ifndef _LIBCPP_NO_EXCEPTIONS
}
catch (...)
{
for (unsigned i = 0; i < facets_.size(); ++i)
if (facets_[i])
facets_[i]->__release_shared();
throw;
}
#endif // _LIBCPP_NO_EXCEPTIONS
}
locale::__imp::__imp(const __imp& other, facet* f, long id)
: facets_(max<size_t>(N, other.facets_.size()+1)),
name_("*")
{
f->__add_shared();
unique_ptr<facet, release> hold(f);
facets_ = other.facets_;
for (unsigned i = 0; i < other.facets_.size(); ++i)
if (facets_[i])
facets_[i]->__add_shared();
install(hold.get(), id);
}
locale::__imp::~__imp()
{
for (unsigned i = 0; i < facets_.size(); ++i)
if (facets_[i])
facets_[i]->__release_shared();
}
void
locale::__imp::install(facet* f, long id)
{
f->__add_shared();
unique_ptr<facet, release> hold(f);
if (static_cast<size_t>(id) >= facets_.size())
facets_.resize(static_cast<size_t>(id+1));
if (facets_[static_cast<size_t>(id)])
facets_[static_cast<size_t>(id)]->__release_shared();
facets_[static_cast<size_t>(id)] = hold.release();
}
const locale::facet*
locale::__imp::use_facet(long id) const
{
if (!has_facet(id))
__throw_bad_cast();
return facets_[static_cast<size_t>(id)];
}
// locale
const locale&
locale::__imp::make_classic()
{
// only one thread can get in here and it only gets in once
static aligned_storage<sizeof(locale)>::type buf;
locale* c = reinterpret_cast<locale*>(&buf);
c->__locale_ = &make<__imp>(1u);
return *c;
}
const locale&
locale::classic()
{
static const locale& c = __imp::make_classic();
return c;
}
locale&
locale::__imp::make_global()
{
// only one thread can get in here and it only gets in once
static aligned_storage<sizeof(locale)>::type buf;
auto *obj = ::new (&buf) locale(locale::classic());
return *obj;
}
locale&
locale::__global()
{
static locale& g = __imp::make_global();
return g;
}
locale::locale() _NOEXCEPT
: __locale_(__global().__locale_)
{
__locale_->__add_shared();
}
locale::locale(const locale& l) _NOEXCEPT
: __locale_(l.__locale_)
{
__locale_->__add_shared();
}
locale::~locale()
{
__locale_->__release_shared();
}
const locale&
locale::operator=(const locale& other) _NOEXCEPT
{
other.__locale_->__add_shared();
__locale_->__release_shared();
__locale_ = other.__locale_;
return *this;
}
locale::locale(const char* name)
: __locale_(name ? new __imp(name)
: (__throw_runtime_error("locale constructed with null"), (__imp*)0))
{
__locale_->__add_shared();
}
locale::locale(const string& name)
: __locale_(new __imp(name))
{
__locale_->__add_shared();
}
locale::locale(const locale& other, const char* name, category c)
: __locale_(name ? new __imp(*other.__locale_, name, c)
: (__throw_runtime_error("locale constructed with null"), (__imp*)0))
{
__locale_->__add_shared();
}
locale::locale(const locale& other, const string& name, category c)
: __locale_(new __imp(*other.__locale_, name, c))
{
__locale_->__add_shared();
}
locale::locale(const locale& other, const locale& one, category c)
: __locale_(new __imp(*other.__locale_, *one.__locale_, c))
{
__locale_->__add_shared();
}
string
locale::name() const
{
return __locale_->name();
}
void
locale::__install_ctor(const locale& other, facet* f, long id)
{
if (f)
__locale_ = new __imp(*other.__locale_, f, id);
else
__locale_ = other.__locale_;
__locale_->__add_shared();
}
locale
locale::global(const locale& loc)
{
locale& g = __global();
locale r = g;
g = loc;
if (g.name() != "*")
setlocale(LC_ALL, g.name().c_str());
return r;
}
bool
locale::has_facet(id& x) const
{
return __locale_->has_facet(x.__get());
}
const locale::facet*
locale::use_facet(id& x) const
{
return __locale_->use_facet(x.__get());
}
bool
locale::operator==(const locale& y) const
{
return (__locale_ == y.__locale_)
|| (__locale_->name() != "*" && __locale_->name() == y.__locale_->name());
}
// locale::facet
locale::facet::~facet()
{
}
void
locale::facet::__on_zero_shared() _NOEXCEPT
{
delete this;
}
// locale::id
int32_t locale::id::__next_id = 0;
namespace
{
class __fake_bind
{
locale::id* id_;
void (locale::id::* pmf_)();
public:
__fake_bind(void (locale::id::* pmf)(), locale::id* id)
: id_(id), pmf_(pmf) {}
void operator()() const
{
(id_->*pmf_)();
}
};
}
long
locale::id::__get()
{
call_once(__flag_, __fake_bind(&locale::id::__init, this));
return __id_ - 1;
}
void
locale::id::__init()
{
__id_ = __libcpp_atomic_add(&__next_id, 1);
}
// template <> class collate_byname<char>
collate_byname<char>::collate_byname(const char* n, size_t refs)
: collate<char>(refs),
__l(newlocale(LC_ALL_MASK, n, 0))
{
if (__l == 0)
__throw_runtime_error("collate_byname<char>::collate_byname"
" failed to construct for " + string(n));
}
collate_byname<char>::collate_byname(const string& name, size_t refs)
: collate<char>(refs),
__l(newlocale(LC_ALL_MASK, name.c_str(), 0))
{
if (__l == 0)
__throw_runtime_error("collate_byname<char>::collate_byname"
" failed to construct for " + name);
}
collate_byname<char>::~collate_byname()
{
freelocale(__l);
}
int
collate_byname<char>::do_compare(const char_type* __lo1, const char_type* __hi1,
const char_type* __lo2, const char_type* __hi2) const
{
string_type lhs(__lo1, __hi1);
string_type rhs(__lo2, __hi2);
int r = strcoll_l(lhs.c_str(), rhs.c_str(), __l);
if (r < 0)
return -1;
if (r > 0)
return 1;
return r;
}
collate_byname<char>::string_type
collate_byname<char>::do_transform(const char_type* lo, const char_type* hi) const
{
const string_type in(lo, hi);
string_type out(strxfrm_l(0, in.c_str(), 0, __l), char());
strxfrm_l(const_cast<char*>(out.c_str()), in.c_str(), out.size()+1, __l);
return out;
}
// template <> class collate_byname<wchar_t>
collate_byname<wchar_t>::collate_byname(const char* n, size_t refs)
: collate<wchar_t>(refs),
__l(newlocale(LC_ALL_MASK, n, 0))
{
if (__l == 0)
__throw_runtime_error("collate_byname<wchar_t>::collate_byname(size_t refs)"
" failed to construct for " + string(n));
}
collate_byname<wchar_t>::collate_byname(const string& name, size_t refs)
: collate<wchar_t>(refs),
__l(newlocale(LC_ALL_MASK, name.c_str(), 0))
{
if (__l == 0)
__throw_runtime_error("collate_byname<wchar_t>::collate_byname(size_t refs)"
" failed to construct for " + name);
}
collate_byname<wchar_t>::~collate_byname()
{
freelocale(__l);
}
int
collate_byname<wchar_t>::do_compare(const char_type* __lo1, const char_type* __hi1,
const char_type* __lo2, const char_type* __hi2) const
{
string_type lhs(__lo1, __hi1);
string_type rhs(__lo2, __hi2);
int r = wcscoll_l(lhs.c_str(), rhs.c_str(), __l);
if (r < 0)
return -1;
if (r > 0)
return 1;
return r;
}
collate_byname<wchar_t>::string_type
collate_byname<wchar_t>::do_transform(const char_type* lo, const char_type* hi) const
{
const string_type in(lo, hi);
string_type out(wcsxfrm_l(0, in.c_str(), 0, __l), wchar_t());
wcsxfrm_l(const_cast<wchar_t*>(out.c_str()), in.c_str(), out.size()+1, __l);
return out;
}
// template <> class ctype<wchar_t>;
const ctype_base::mask ctype_base::space;
const ctype_base::mask ctype_base::print;
const ctype_base::mask ctype_base::cntrl;
const ctype_base::mask ctype_base::upper;
const ctype_base::mask ctype_base::lower;
const ctype_base::mask ctype_base::alpha;
const ctype_base::mask ctype_base::digit;
const ctype_base::mask ctype_base::punct;
const ctype_base::mask ctype_base::xdigit;
const ctype_base::mask ctype_base::blank;
const ctype_base::mask ctype_base::alnum;
const ctype_base::mask ctype_base::graph;
locale::id ctype<wchar_t>::id;
ctype<wchar_t>::~ctype()
{
}
bool
ctype<wchar_t>::do_is(mask m, char_type c) const
{
return isascii(c) ? (ctype<char>::classic_table()[c] & m) != 0 : false;
}
const wchar_t*
ctype<wchar_t>::do_is(const char_type* low, const char_type* high, mask* vec) const
{
for (; low != high; ++low, ++vec)
*vec = static_cast<mask>(isascii(*low) ?
ctype<char>::classic_table()[*low] : 0);
return low;
}
const wchar_t*
ctype<wchar_t>::do_scan_is(mask m, const char_type* low, const char_type* high) const
{
for (; low != high; ++low)
if (isascii(*low) && (ctype<char>::classic_table()[*low] & m))
break;
return low;
}
const wchar_t*
ctype<wchar_t>::do_scan_not(mask m, const char_type* low, const char_type* high) const
{
for (; low != high; ++low)
if (!(isascii(*low) && (ctype<char>::classic_table()[*low] & m)))
break;
return low;
}
wchar_t
ctype<wchar_t>::do_toupper(char_type c) const
{
#ifdef _LIBCPP_HAS_DEFAULTRUNELOCALE
return isascii(c) ? _DefaultRuneLocale.__mapupper[c] : c;
#elif defined(__GLIBC__) || defined(__EMSCRIPTEN__) || \
defined(__NetBSD__)
return isascii(c) ? ctype<char>::__classic_upper_table()[c] : c;
#else
return (isascii(c) && iswlower_l(c, _LIBCPP_GET_C_LOCALE)) ? c-L'a'+L'A' : c;
#endif
}
const wchar_t*
ctype<wchar_t>::do_toupper(char_type* low, const char_type* high) const
{
for (; low != high; ++low)
#ifdef _LIBCPP_HAS_DEFAULTRUNELOCALE
*low = isascii(*low) ? _DefaultRuneLocale.__mapupper[*low] : *low;
#elif defined(__GLIBC__) || defined(__EMSCRIPTEN__) || \
defined(__NetBSD__)
*low = isascii(*low) ? ctype<char>::__classic_upper_table()[*low]
: *low;
#else
*low = (isascii(*low) && islower_l(*low, _LIBCPP_GET_C_LOCALE)) ? (*low-L'a'+L'A') : *low;
#endif
return low;
}
wchar_t
ctype<wchar_t>::do_tolower(char_type c) const
{
#ifdef _LIBCPP_HAS_DEFAULTRUNELOCALE
return isascii(c) ? _DefaultRuneLocale.__maplower[c] : c;
#elif defined(__GLIBC__) || defined(__EMSCRIPTEN__) || \
defined(__NetBSD__)
return isascii(c) ? ctype<char>::__classic_lower_table()[c] : c;
#else
return (isascii(c) && isupper_l(c, _LIBCPP_GET_C_LOCALE)) ? c-L'A'+'a' : c;
#endif
}
const wchar_t*
ctype<wchar_t>::do_tolower(char_type* low, const char_type* high) const
{
for (; low != high; ++low)
#ifdef _LIBCPP_HAS_DEFAULTRUNELOCALE
*low = isascii(*low) ? _DefaultRuneLocale.__maplower[*low] : *low;
#elif defined(__GLIBC__) || defined(__EMSCRIPTEN__) || \
defined(__NetBSD__)
*low = isascii(*low) ? ctype<char>::__classic_lower_table()[*low]
: *low;
#else
*low = (isascii(*low) && isupper_l(*low, _LIBCPP_GET_C_LOCALE)) ? *low-L'A'+L'a' : *low;
#endif
return low;
}
wchar_t
ctype<wchar_t>::do_widen(char c) const
{
return c;
}
const char*
ctype<wchar_t>::do_widen(const char* low, const char* high, char_type* dest) const
{
for (; low != high; ++low, ++dest)
*dest = *low;
return low;
}
char
ctype<wchar_t>::do_narrow(char_type c, char dfault) const
{
if (isascii(c))
return static_cast<char>(c);
return dfault;
}
const wchar_t*
ctype<wchar_t>::do_narrow(const char_type* low, const char_type* high, char dfault, char* dest) const
{
for (; low != high; ++low, ++dest)
if (isascii(*low))
*dest = static_cast<char>(*low);
else
*dest = dfault;
return low;
}
// template <> class ctype<char>;
locale::id ctype<char>::id;
ctype<char>::ctype(const mask* tab, bool del, size_t refs)
: locale::facet(refs),
__tab_(tab),
__del_(del)
{
if (__tab_ == 0)
__tab_ = classic_table();
}
ctype<char>::~ctype()
{
if (__tab_ && __del_)
delete [] __tab_;
}
char
ctype<char>::do_toupper(char_type c) const
{
#ifdef _LIBCPP_HAS_DEFAULTRUNELOCALE
return isascii(c) ?
static_cast<char>(_DefaultRuneLocale.__mapupper[static_cast<ptrdiff_t>(c)]) : c;
#elif defined(__NetBSD__)
return static_cast<char>(__classic_upper_table()[static_cast<unsigned char>(c)]);
#elif defined(__GLIBC__) || defined(__EMSCRIPTEN__)
return isascii(c) ?
static_cast<char>(__classic_upper_table()[static_cast<unsigned char>(c)]) : c;
#else
return (isascii(c) && islower_l(c, _LIBCPP_GET_C_LOCALE)) ? c-'a'+'A' : c;
#endif
}
const char*
ctype<char>::do_toupper(char_type* low, const char_type* high) const
{
for (; low != high; ++low)
#ifdef _LIBCPP_HAS_DEFAULTRUNELOCALE
*low = isascii(*low) ?
static_cast<char>(_DefaultRuneLocale.__mapupper[static_cast<ptrdiff_t>(*low)]) : *low;
#elif defined(__NetBSD__)
*low = static_cast<char>(__classic_upper_table()[static_cast<unsigned char>(*low)]);
#elif defined(__GLIBC__) || defined(__EMSCRIPTEN__)
*low = isascii(*low) ?
static_cast<char>(__classic_upper_table()[static_cast<size_t>(*low)]) : *low;
#else
*low = (isascii(*low) && islower_l(*low, _LIBCPP_GET_C_LOCALE)) ? *low-'a'+'A' : *low;
#endif
return low;
}
char
ctype<char>::do_tolower(char_type c) const
{
#ifdef _LIBCPP_HAS_DEFAULTRUNELOCALE
return isascii(c) ?
static_cast<char>(_DefaultRuneLocale.__maplower[static_cast<ptrdiff_t>(c)]) : c;
#elif defined(__NetBSD__)
return static_cast<char>(__classic_lower_table()[static_cast<unsigned char>(c)]);
#elif defined(__GLIBC__) || defined(__EMSCRIPTEN__)
return isascii(c) ?
static_cast<char>(__classic_lower_table()[static_cast<size_t>(c)]) : c;
#else
return (isascii(c) && isupper_l(c, _LIBCPP_GET_C_LOCALE)) ? c-'A'+'a' : c;
#endif
}
const char*
ctype<char>::do_tolower(char_type* low, const char_type* high) const
{
for (; low != high; ++low)
#ifdef _LIBCPP_HAS_DEFAULTRUNELOCALE
*low = isascii(*low) ? static_cast<char>(_DefaultRuneLocale.__maplower[static_cast<ptrdiff_t>(*low)]) : *low;
#elif defined(__NetBSD__)
*low = static_cast<char>(__classic_lower_table()[static_cast<unsigned char>(*low)]);
#elif defined(__GLIBC__) || defined(__EMSCRIPTEN__)
*low = isascii(*low) ? static_cast<char>(__classic_lower_table()[static_cast<size_t>(*low)]) : *low;
#else
*low = (isascii(*low) && isupper_l(*low, _LIBCPP_GET_C_LOCALE)) ? *low-'A'+'a' : *low;
#endif
return low;
}
char
ctype<char>::do_widen(char c) const
{
return c;
}
const char*
ctype<char>::do_widen(const char* low, const char* high, char_type* dest) const
{
for (; low != high; ++low, ++dest)
*dest = *low;
return low;