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cosmopolitan/third_party/libcxx/__filesystem/path.h
Justine Tunney 5660ec4741
Release Cosmopolitan v3.6.0 
This release is an atomic upgrade to GCC 14.1.0 with C23 and C++23
2024-07-23 03:28:19 -07:00

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// -*- C++ -*-
//===----------------------------------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCPP___FILESYSTEM_PATH_H
#define _LIBCPP___FILESYSTEM_PATH_H
#include <__algorithm/replace.h>
#include <__algorithm/replace_copy.h>
#include <__config>
#include <__functional/unary_function.h>
#include <__fwd/functional.h>
#include <__iterator/back_insert_iterator.h>
#include <__iterator/iterator_traits.h>
#include <__type_traits/decay.h>
#include <__type_traits/is_pointer.h>
#include <__type_traits/remove_const.h>
#include <__type_traits/remove_pointer.h>
#include <cstddef>
#include <string>
#include <string_view>
#if !defined(_LIBCPP_HAS_NO_LOCALIZATION)
# include <iomanip> // for quoted
# include <locale>
#endif
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
#if _LIBCPP_STD_VER >= 17
_LIBCPP_BEGIN_NAMESPACE_FILESYSTEM
_LIBCPP_AVAILABILITY_FILESYSTEM_LIBRARY_PUSH
template <class _Tp>
struct __can_convert_char {
static const bool value = false;
};
template <class _Tp>
struct __can_convert_char<const _Tp> : public __can_convert_char<_Tp> {};
template <>
struct __can_convert_char<char> {
static const bool value = true;
using __char_type = char;
};
template <>
struct __can_convert_char<wchar_t> {
static const bool value = true;
using __char_type = wchar_t;
};
# ifndef _LIBCPP_HAS_NO_CHAR8_T
template <>
struct __can_convert_char<char8_t> {
static const bool value = true;
using __char_type = char8_t;
};
# endif
template <>
struct __can_convert_char<char16_t> {
static const bool value = true;
using __char_type = char16_t;
};
template <>
struct __can_convert_char<char32_t> {
static const bool value = true;
using __char_type = char32_t;
};
template <class _ECharT, __enable_if_t<__can_convert_char<_ECharT>::value, int> = 0>
_LIBCPP_HIDE_FROM_ABI bool __is_separator(_ECharT __e) {
# if defined(_LIBCPP_WIN32API)
return __e == _ECharT('/') || __e == _ECharT('\\');
# else
return __e == _ECharT('/');
# endif
}
# ifndef _LIBCPP_HAS_NO_CHAR8_T
typedef u8string __u8_string;
# else
typedef string __u8_string;
# endif
struct _NullSentinel {};
template <class _Tp>
using _Void = void;
template <class _Tp, class = void>
struct __is_pathable_string : public false_type {};
template <class _ECharT, class _Traits, class _Alloc>
struct __is_pathable_string< basic_string<_ECharT, _Traits, _Alloc>,
_Void<typename __can_convert_char<_ECharT>::__char_type> >
: public __can_convert_char<_ECharT> {
using _Str = basic_string<_ECharT, _Traits, _Alloc>;
_LIBCPP_HIDE_FROM_ABI static _ECharT const* __range_begin(_Str const& __s) { return __s.data(); }
_LIBCPP_HIDE_FROM_ABI static _ECharT const* __range_end(_Str const& __s) { return __s.data() + __s.length(); }
_LIBCPP_HIDE_FROM_ABI static _ECharT __first_or_null(_Str const& __s) { return __s.empty() ? _ECharT{} : __s[0]; }
};
template <class _ECharT, class _Traits>
struct __is_pathable_string< basic_string_view<_ECharT, _Traits>,
_Void<typename __can_convert_char<_ECharT>::__char_type> >
: public __can_convert_char<_ECharT> {
using _Str = basic_string_view<_ECharT, _Traits>;
_LIBCPP_HIDE_FROM_ABI static _ECharT const* __range_begin(_Str const& __s) { return __s.data(); }
_LIBCPP_HIDE_FROM_ABI static _ECharT const* __range_end(_Str const& __s) { return __s.data() + __s.length(); }
_LIBCPP_HIDE_FROM_ABI static _ECharT __first_or_null(_Str const& __s) { return __s.empty() ? _ECharT{} : __s[0]; }
};
template <class _Source,
class _DS = __decay_t<_Source>,
class _UnqualPtrType = __remove_const_t<__remove_pointer_t<_DS> >,
bool _IsCharPtr = is_pointer<_DS>::value && __can_convert_char<_UnqualPtrType>::value>
struct __is_pathable_char_array : false_type {};
template <class _Source, class _ECharT, class _UPtr>
struct __is_pathable_char_array<_Source, _ECharT*, _UPtr, true> : __can_convert_char<__remove_const_t<_ECharT> > {
_LIBCPP_HIDE_FROM_ABI static _ECharT const* __range_begin(const _ECharT* __b) { return __b; }
_LIBCPP_HIDE_FROM_ABI static _ECharT const* __range_end(const _ECharT* __b) {
using _Iter = const _ECharT*;
const _ECharT __sentinel = _ECharT{};
_Iter __e = __b;
for (; *__e != __sentinel; ++__e)
;
return __e;
}
_LIBCPP_HIDE_FROM_ABI static _ECharT __first_or_null(const _ECharT* __b) { return *__b; }
};
template <class _Iter, bool _IsIt = __has_input_iterator_category<_Iter>::value, class = void>
struct __is_pathable_iter : false_type {};
template <class _Iter>
struct __is_pathable_iter<
_Iter,
true,
_Void<typename __can_convert_char< typename iterator_traits<_Iter>::value_type>::__char_type> >
: __can_convert_char<typename iterator_traits<_Iter>::value_type> {
using _ECharT = typename iterator_traits<_Iter>::value_type;
_LIBCPP_HIDE_FROM_ABI static _Iter __range_begin(_Iter __b) { return __b; }
_LIBCPP_HIDE_FROM_ABI static _NullSentinel __range_end(_Iter) { return _NullSentinel{}; }
_LIBCPP_HIDE_FROM_ABI static _ECharT __first_or_null(_Iter __b) { return *__b; }
};
template <class _Tp,
bool _IsStringT = __is_pathable_string<_Tp>::value,
bool _IsCharIterT = __is_pathable_char_array<_Tp>::value,
bool _IsIterT = !_IsCharIterT && __is_pathable_iter<_Tp>::value>
struct __is_pathable : false_type {
static_assert(!_IsStringT && !_IsCharIterT && !_IsIterT, "Must all be false");
};
template <class _Tp>
struct __is_pathable<_Tp, true, false, false> : __is_pathable_string<_Tp> {};
template <class _Tp>
struct __is_pathable<_Tp, false, true, false> : __is_pathable_char_array<_Tp> {};
template <class _Tp>
struct __is_pathable<_Tp, false, false, true> : __is_pathable_iter<_Tp> {};
# if defined(_LIBCPP_WIN32API)
typedef wstring __path_string;
typedef wchar_t __path_value;
# else
typedef string __path_string;
typedef char __path_value;
# endif
# if defined(_LIBCPP_WIN32API)
_LIBCPP_EXPORTED_FROM_ABI size_t __wide_to_char(const wstring&, char*, size_t);
_LIBCPP_EXPORTED_FROM_ABI size_t __char_to_wide(const string&, wchar_t*, size_t);
# endif
template <class _ECharT>
struct _PathCVT;
# if !defined(_LIBCPP_HAS_NO_LOCALIZATION)
template <class _ECharT>
struct _PathCVT {
static_assert(__can_convert_char<_ECharT>::value, "Char type not convertible");
typedef __narrow_to_utf8<sizeof(_ECharT) * __CHAR_BIT__> _Narrower;
# if defined(_LIBCPP_WIN32API)
typedef __widen_from_utf8<sizeof(wchar_t) * __CHAR_BIT__> _Widener;
# endif
_LIBCPP_HIDE_FROM_ABI static void __append_range(__path_string& __dest, _ECharT const* __b, _ECharT const* __e) {
# if defined(_LIBCPP_WIN32API)
string __utf8;
_Narrower()(back_inserter(__utf8), __b, __e);
_Widener()(back_inserter(__dest), __utf8.data(), __utf8.data() + __utf8.size());
# else
_Narrower()(back_inserter(__dest), __b, __e);
# endif
}
template <class _Iter>
_LIBCPP_HIDE_FROM_ABI static void __append_range(__path_string& __dest, _Iter __b, _Iter __e) {
static_assert(!is_same<_Iter, _ECharT*>::value, "Call const overload");
if (__b == __e)
return;
basic_string<_ECharT> __tmp(__b, __e);
# if defined(_LIBCPP_WIN32API)
string __utf8;
_Narrower()(back_inserter(__utf8), __tmp.data(), __tmp.data() + __tmp.length());
_Widener()(back_inserter(__dest), __utf8.data(), __utf8.data() + __utf8.size());
# else
_Narrower()(back_inserter(__dest), __tmp.data(), __tmp.data() + __tmp.length());
# endif
}
template <class _Iter>
_LIBCPP_HIDE_FROM_ABI static void __append_range(__path_string& __dest, _Iter __b, _NullSentinel) {
static_assert(!is_same<_Iter, _ECharT*>::value, "Call const overload");
const _ECharT __sentinel = _ECharT{};
if (*__b == __sentinel)
return;
basic_string<_ECharT> __tmp;
for (; *__b != __sentinel; ++__b)
__tmp.push_back(*__b);
# if defined(_LIBCPP_WIN32API)
string __utf8;
_Narrower()(back_inserter(__utf8), __tmp.data(), __tmp.data() + __tmp.length());
_Widener()(back_inserter(__dest), __utf8.data(), __utf8.data() + __utf8.size());
# else
_Narrower()(back_inserter(__dest), __tmp.data(), __tmp.data() + __tmp.length());
# endif
}
template <class _Source>
_LIBCPP_HIDE_FROM_ABI static void __append_source(__path_string& __dest, _Source const& __s) {
using _Traits = __is_pathable<_Source>;
__append_range(__dest, _Traits::__range_begin(__s), _Traits::__range_end(__s));
}
};
# endif // !_LIBCPP_HAS_NO_LOCALIZATION
template <>
struct _PathCVT<__path_value> {
template <class _Iter, __enable_if_t<__has_exactly_input_iterator_category<_Iter>::value, int> = 0>
_LIBCPP_HIDE_FROM_ABI static void __append_range(__path_string& __dest, _Iter __b, _Iter __e) {
for (; __b != __e; ++__b)
__dest.push_back(*__b);
}
template <class _Iter, __enable_if_t<__has_forward_iterator_category<_Iter>::value, int> = 0>
_LIBCPP_HIDE_FROM_ABI static void __append_range(__path_string& __dest, _Iter __b, _Iter __e) {
__dest.append(__b, __e);
}
template <class _Iter>
_LIBCPP_HIDE_FROM_ABI static void __append_range(__path_string& __dest, _Iter __b, _NullSentinel) {
const char __sentinel = char{};
for (; *__b != __sentinel; ++__b)
__dest.push_back(*__b);
}
template <class _Source>
_LIBCPP_HIDE_FROM_ABI static void __append_source(__path_string& __dest, _Source const& __s) {
using _Traits = __is_pathable<_Source>;
__append_range(__dest, _Traits::__range_begin(__s), _Traits::__range_end(__s));
}
};
# if defined(_LIBCPP_WIN32API)
template <>
struct _PathCVT<char> {
_LIBCPP_HIDE_FROM_ABI static void __append_string(__path_string& __dest, const basic_string<char>& __str) {
size_t __size = __char_to_wide(__str, nullptr, 0);
size_t __pos = __dest.size();
__dest.resize(__pos + __size);
__char_to_wide(__str, const_cast<__path_value*>(__dest.data()) + __pos, __size);
}
template <class _Iter, __enable_if_t<__has_exactly_input_iterator_category<_Iter>::value, int> = 0>
_LIBCPP_HIDE_FROM_ABI static void __append_range(__path_string& __dest, _Iter __b, _Iter __e) {
basic_string<char> __tmp(__b, __e);
__append_string(__dest, __tmp);
}
template <class _Iter, __enable_if_t<__has_forward_iterator_category<_Iter>::value, int> = 0>
_LIBCPP_HIDE_FROM_ABI static void __append_range(__path_string& __dest, _Iter __b, _Iter __e) {
basic_string<char> __tmp(__b, __e);
__append_string(__dest, __tmp);
}
template <class _Iter>
_LIBCPP_HIDE_FROM_ABI static void __append_range(__path_string& __dest, _Iter __b, _NullSentinel) {
const char __sentinel = char{};
basic_string<char> __tmp;
for (; *__b != __sentinel; ++__b)
__tmp.push_back(*__b);
__append_string(__dest, __tmp);
}
template <class _Source>
_LIBCPP_HIDE_FROM_ABI static void __append_source(__path_string& __dest, _Source const& __s) {
using _Traits = __is_pathable<_Source>;
__append_range(__dest, _Traits::__range_begin(__s), _Traits::__range_end(__s));
}
};
template <class _ECharT>
struct _PathExport {
typedef __narrow_to_utf8<sizeof(wchar_t) * __CHAR_BIT__> _Narrower;
typedef __widen_from_utf8<sizeof(_ECharT) * __CHAR_BIT__> _Widener;
template <class _Str>
_LIBCPP_HIDE_FROM_ABI static void __append(_Str& __dest, const __path_string& __src) {
string __utf8;
_Narrower()(back_inserter(__utf8), __src.data(), __src.data() + __src.size());
_Widener()(back_inserter(__dest), __utf8.data(), __utf8.data() + __utf8.size());
}
};
template <>
struct _PathExport<char> {
template <class _Str>
_LIBCPP_HIDE_FROM_ABI static void __append(_Str& __dest, const __path_string& __src) {
size_t __size = __wide_to_char(__src, nullptr, 0);
size_t __pos = __dest.size();
__dest.resize(__size);
__wide_to_char(__src, const_cast<char*>(__dest.data()) + __pos, __size);
}
};
template <>
struct _PathExport<wchar_t> {
template <class _Str>
_LIBCPP_HIDE_FROM_ABI static void __append(_Str& __dest, const __path_string& __src) {
__dest.append(__src.begin(), __src.end());
}
};
template <>
struct _PathExport<char16_t> {
template <class _Str>
_LIBCPP_HIDE_FROM_ABI static void __append(_Str& __dest, const __path_string& __src) {
__dest.append(__src.begin(), __src.end());
}
};
# ifndef _LIBCPP_HAS_NO_CHAR8_T
template <>
struct _PathExport<char8_t> {
typedef __narrow_to_utf8<sizeof(wchar_t) * __CHAR_BIT__> _Narrower;
template <class _Str>
_LIBCPP_HIDE_FROM_ABI static void __append(_Str& __dest, const __path_string& __src) {
_Narrower()(back_inserter(__dest), __src.data(), __src.data() + __src.size());
}
};
# endif /* !_LIBCPP_HAS_NO_CHAR8_T */
# endif /* _LIBCPP_WIN32API */
class _LIBCPP_EXPORTED_FROM_ABI path {
template <class _SourceOrIter, class _Tp = path&>
using _EnableIfPathable = __enable_if_t<__is_pathable<_SourceOrIter>::value, _Tp>;
template <class _Tp>
using _SourceChar = typename __is_pathable<_Tp>::__char_type;
template <class _Tp>
using _SourceCVT = _PathCVT<_SourceChar<_Tp> >;
public:
# if defined(_LIBCPP_WIN32API)
typedef wchar_t value_type;
static constexpr value_type preferred_separator = L'\\';
# else
typedef char value_type;
static constexpr value_type preferred_separator = '/';
# endif
typedef basic_string<value_type> string_type;
typedef basic_string_view<value_type> __string_view;
enum format : unsigned char { auto_format, native_format, generic_format };
// constructors and destructor
_LIBCPP_HIDE_FROM_ABI path() noexcept {}
_LIBCPP_HIDE_FROM_ABI path(const path& __p) : __pn_(__p.__pn_) {}
_LIBCPP_HIDE_FROM_ABI path(path&& __p) noexcept : __pn_(std::move(__p.__pn_)) {}
_LIBCPP_HIDE_FROM_ABI path(string_type&& __s, format = format::auto_format) noexcept : __pn_(std::move(__s)) {}
template <class _Source, class = _EnableIfPathable<_Source, void> >
_LIBCPP_HIDE_FROM_ABI path(const _Source& __src, format = format::auto_format) {
_SourceCVT<_Source>::__append_source(__pn_, __src);
}
template <class _InputIt>
_LIBCPP_HIDE_FROM_ABI path(_InputIt __first, _InputIt __last, format = format::auto_format) {
typedef typename iterator_traits<_InputIt>::value_type _ItVal;
_PathCVT<_ItVal>::__append_range(__pn_, __first, __last);
}
/*
#if !defined(_LIBCPP_HAS_NO_LOCALIZATION)
// TODO Implement locale conversions.
template <class _Source, class = _EnableIfPathable<_Source, void> >
path(const _Source& __src, const locale& __loc, format = format::auto_format);
template <class _InputIt>
path(_InputIt __first, _InputIt _last, const locale& __loc,
format = format::auto_format);
#endif
*/
_LIBCPP_HIDE_FROM_ABI ~path() = default;
// assignments
_LIBCPP_HIDE_FROM_ABI path& operator=(const path& __p) {
__pn_ = __p.__pn_;
return *this;
}
_LIBCPP_HIDE_FROM_ABI path& operator=(path&& __p) noexcept {
__pn_ = std::move(__p.__pn_);
return *this;
}
_LIBCPP_HIDE_FROM_ABI path& operator=(string_type&& __s) noexcept {
__pn_ = std::move(__s);
return *this;
}
_LIBCPP_HIDE_FROM_ABI path& assign(string_type&& __s) noexcept {
__pn_ = std::move(__s);
return *this;
}
template <class _Source>
_LIBCPP_HIDE_FROM_ABI _EnableIfPathable<_Source> operator=(const _Source& __src) {
return this->assign(__src);
}
template <class _Source>
_LIBCPP_HIDE_FROM_ABI _EnableIfPathable<_Source> assign(const _Source& __src) {
__pn_.clear();
_SourceCVT<_Source>::__append_source(__pn_, __src);
return *this;
}
template <class _InputIt>
_LIBCPP_HIDE_FROM_ABI path& assign(_InputIt __first, _InputIt __last) {
typedef typename iterator_traits<_InputIt>::value_type _ItVal;
__pn_.clear();
_PathCVT<_ItVal>::__append_range(__pn_, __first, __last);
return *this;
}
public:
// appends
# if defined(_LIBCPP_WIN32API)
_LIBCPP_HIDE_FROM_ABI path& operator/=(const path& __p) {
auto __p_root_name = __p.__root_name();
auto __p_root_name_size = __p_root_name.size();
if (__p.is_absolute() || (!__p_root_name.empty() && __p_root_name != __string_view(root_name().__pn_))) {
__pn_ = __p.__pn_;
return *this;
}
if (__p.has_root_directory()) {
path __root_name_str = root_name();
__pn_ = __root_name_str.native();
__pn_ += __string_view(__p.__pn_).substr(__p_root_name_size);
return *this;
}
if (has_filename() || (!has_root_directory() && is_absolute()))
__pn_ += preferred_separator;
__pn_ += __string_view(__p.__pn_).substr(__p_root_name_size);
return *this;
}
template <class _Source>
_LIBCPP_HIDE_FROM_ABI _EnableIfPathable<_Source> operator/=(const _Source& __src) {
return operator/=(path(__src));
}
template <class _Source>
_LIBCPP_HIDE_FROM_ABI _EnableIfPathable<_Source> append(const _Source& __src) {
return operator/=(path(__src));
}
template <class _InputIt>
_LIBCPP_HIDE_FROM_ABI path& append(_InputIt __first, _InputIt __last) {
return operator/=(path(__first, __last));
}
# else
_LIBCPP_HIDE_FROM_ABI path& operator/=(const path& __p) {
if (__p.is_absolute()) {
__pn_ = __p.__pn_;
return *this;
}
if (has_filename())
__pn_ += preferred_separator;
__pn_ += __p.native();
return *this;
}
// FIXME: Use _LIBCPP_DIAGNOSE_WARNING to produce a diagnostic when __src
// is known at compile time to be "/' since the user almost certainly intended
// to append a separator instead of overwriting the path with "/"
template <class _Source>
_LIBCPP_HIDE_FROM_ABI _EnableIfPathable<_Source> operator/=(const _Source& __src) {
return this->append(__src);
}
template <class _Source>
_LIBCPP_HIDE_FROM_ABI _EnableIfPathable<_Source> append(const _Source& __src) {
using _Traits = __is_pathable<_Source>;
using _CVT = _PathCVT<_SourceChar<_Source> >;
bool __source_is_absolute = filesystem::__is_separator(_Traits::__first_or_null(__src));
if (__source_is_absolute)
__pn_.clear();
else if (has_filename())
__pn_ += preferred_separator;
_CVT::__append_source(__pn_, __src);
return *this;
}
template <class _InputIt>
_LIBCPP_HIDE_FROM_ABI path& append(_InputIt __first, _InputIt __last) {
typedef typename iterator_traits<_InputIt>::value_type _ItVal;
static_assert(__can_convert_char<_ItVal>::value, "Must convertible");
using _CVT = _PathCVT<_ItVal>;
if (__first != __last && filesystem::__is_separator(*__first))
__pn_.clear();
else if (has_filename())
__pn_ += preferred_separator;
_CVT::__append_range(__pn_, __first, __last);
return *this;
}
# endif
// concatenation
_LIBCPP_HIDE_FROM_ABI path& operator+=(const path& __x) {
__pn_ += __x.__pn_;
return *this;
}
_LIBCPP_HIDE_FROM_ABI path& operator+=(const string_type& __x) {
__pn_ += __x;
return *this;
}
_LIBCPP_HIDE_FROM_ABI path& operator+=(__string_view __x) {
__pn_ += __x;
return *this;
}
_LIBCPP_HIDE_FROM_ABI path& operator+=(const value_type* __x) {
__pn_ += __x;
return *this;
}
_LIBCPP_HIDE_FROM_ABI path& operator+=(value_type __x) {
__pn_ += __x;
return *this;
}
template <class _ECharT, __enable_if_t<__can_convert_char<_ECharT>::value, int> = 0>
_LIBCPP_HIDE_FROM_ABI path& operator+=(_ECharT __x) {
_PathCVT<_ECharT>::__append_source(__pn_, basic_string_view<_ECharT>(&__x, 1));
return *this;
}
template <class _Source>
_LIBCPP_HIDE_FROM_ABI _EnableIfPathable<_Source> operator+=(const _Source& __x) {
return this->concat(__x);
}
template <class _Source>
_LIBCPP_HIDE_FROM_ABI _EnableIfPathable<_Source> concat(const _Source& __x) {
_SourceCVT<_Source>::__append_source(__pn_, __x);
return *this;
}
template <class _InputIt>
_LIBCPP_HIDE_FROM_ABI path& concat(_InputIt __first, _InputIt __last) {
typedef typename iterator_traits<_InputIt>::value_type _ItVal;
_PathCVT<_ItVal>::__append_range(__pn_, __first, __last);
return *this;
}
// modifiers
_LIBCPP_HIDE_FROM_ABI void clear() noexcept { __pn_.clear(); }
_LIBCPP_HIDE_FROM_ABI path& make_preferred() {
# if defined(_LIBCPP_WIN32API)
std::replace(__pn_.begin(), __pn_.end(), L'/', L'\\');
# endif
return *this;
}
_LIBCPP_HIDE_FROM_ABI path& remove_filename() {
auto __fname = __filename();
if (!__fname.empty())
__pn_.erase(__fname.data() - __pn_.data());
return *this;
}
_LIBCPP_HIDE_FROM_ABI path& replace_filename(const path& __replacement) {
remove_filename();
return (*this /= __replacement);
}
path& replace_extension(const path& __replacement = path());
friend _LIBCPP_HIDE_FROM_ABI bool operator==(const path& __lhs, const path& __rhs) noexcept {
return __lhs.__compare(__rhs.__pn_) == 0;
}
# if _LIBCPP_STD_VER <= 17
friend _LIBCPP_HIDE_FROM_ABI bool operator!=(const path& __lhs, const path& __rhs) noexcept {
return __lhs.__compare(__rhs.__pn_) != 0;
}
friend _LIBCPP_HIDE_FROM_ABI bool operator<(const path& __lhs, const path& __rhs) noexcept {
return __lhs.__compare(__rhs.__pn_) < 0;
}
friend _LIBCPP_HIDE_FROM_ABI bool operator<=(const path& __lhs, const path& __rhs) noexcept {
return __lhs.__compare(__rhs.__pn_) <= 0;
}
friend _LIBCPP_HIDE_FROM_ABI bool operator>(const path& __lhs, const path& __rhs) noexcept {
return __lhs.__compare(__rhs.__pn_) > 0;
}
friend _LIBCPP_HIDE_FROM_ABI bool operator>=(const path& __lhs, const path& __rhs) noexcept {
return __lhs.__compare(__rhs.__pn_) >= 0;
}
# else // _LIBCPP_STD_VER <= 17
friend _LIBCPP_HIDE_FROM_ABI strong_ordering operator<=>(const path& __lhs, const path& __rhs) noexcept {
return __lhs.__compare(__rhs.__pn_) <=> 0;
}
# endif // _LIBCPP_STD_VER <= 17
friend _LIBCPP_HIDE_FROM_ABI path operator/(const path& __lhs, const path& __rhs) {
path __result(__lhs);
__result /= __rhs;
return __result;
}
_LIBCPP_HIDE_FROM_ABI void swap(path& __rhs) noexcept { __pn_.swap(__rhs.__pn_); }
// private helper to allow reserving memory in the path
_LIBCPP_HIDE_FROM_ABI void __reserve(size_t __s) { __pn_.reserve(__s); }
// native format observers
_LIBCPP_HIDE_FROM_ABI const string_type& native() const noexcept { return __pn_; }
_LIBCPP_HIDE_FROM_ABI const value_type* c_str() const noexcept { return __pn_.c_str(); }
_LIBCPP_HIDE_FROM_ABI operator string_type() const { return __pn_; }
# if defined(_LIBCPP_WIN32API)
_LIBCPP_HIDE_FROM_ABI std::wstring wstring() const { return __pn_; }
_LIBCPP_HIDE_FROM_ABI std::wstring generic_wstring() const {
std::wstring __s;
__s.resize(__pn_.size());
std::replace_copy(__pn_.begin(), __pn_.end(), __s.begin(), '\\', '/');
return __s;
}
# if !defined(_LIBCPP_HAS_NO_LOCALIZATION)
template <class _ECharT, class _Traits = char_traits<_ECharT>, class _Allocator = allocator<_ECharT> >
_LIBCPP_HIDE_FROM_ABI basic_string<_ECharT, _Traits, _Allocator> string(const _Allocator& __a = _Allocator()) const {
using _Str = basic_string<_ECharT, _Traits, _Allocator>;
_Str __s(__a);
__s.reserve(__pn_.size());
_PathExport<_ECharT>::__append(__s, __pn_);
return __s;
}
_LIBCPP_HIDE_FROM_ABI std::string string() const { return string<char>(); }
_LIBCPP_HIDE_FROM_ABI __u8_string u8string() const {
using _CVT = __narrow_to_utf8<sizeof(wchar_t) * __CHAR_BIT__>;
__u8_string __s;
__s.reserve(__pn_.size());
_CVT()(back_inserter(__s), __pn_.data(), __pn_.data() + __pn_.size());
return __s;
}
_LIBCPP_HIDE_FROM_ABI std::u16string u16string() const { return string<char16_t>(); }
_LIBCPP_HIDE_FROM_ABI std::u32string u32string() const { return string<char32_t>(); }
// generic format observers
template <class _ECharT, class _Traits = char_traits<_ECharT>, class _Allocator = allocator<_ECharT> >
_LIBCPP_HIDE_FROM_ABI basic_string<_ECharT, _Traits, _Allocator>
generic_string(const _Allocator& __a = _Allocator()) const {
using _Str = basic_string<_ECharT, _Traits, _Allocator>;
_Str __s = string<_ECharT, _Traits, _Allocator>(__a);
// Note: This (and generic_u8string below) is slightly suboptimal as
// it iterates twice over the string; once to convert it to the right
// character type, and once to replace path delimiters.
std::replace(__s.begin(), __s.end(), static_cast<_ECharT>('\\'), static_cast<_ECharT>('/'));
return __s;
}
_LIBCPP_HIDE_FROM_ABI std::string generic_string() const { return generic_string<char>(); }
_LIBCPP_HIDE_FROM_ABI std::u16string generic_u16string() const { return generic_string<char16_t>(); }
_LIBCPP_HIDE_FROM_ABI std::u32string generic_u32string() const { return generic_string<char32_t>(); }
_LIBCPP_HIDE_FROM_ABI __u8_string generic_u8string() const {
__u8_string __s = u8string();
std::replace(__s.begin(), __s.end(), '\\', '/');
return __s;
}
# endif /* !_LIBCPP_HAS_NO_LOCALIZATION */
# else /* _LIBCPP_WIN32API */
_LIBCPP_HIDE_FROM_ABI std::string string() const { return __pn_; }
# ifndef _LIBCPP_HAS_NO_CHAR8_T
_LIBCPP_HIDE_FROM_ABI std::u8string u8string() const { return std::u8string(__pn_.begin(), __pn_.end()); }
# else
_LIBCPP_HIDE_FROM_ABI std::string u8string() const { return __pn_; }
# endif
# if !defined(_LIBCPP_HAS_NO_LOCALIZATION)
template <class _ECharT, class _Traits = char_traits<_ECharT>, class _Allocator = allocator<_ECharT> >
_LIBCPP_HIDE_FROM_ABI basic_string<_ECharT, _Traits, _Allocator> string(const _Allocator& __a = _Allocator()) const {
using _CVT = __widen_from_utf8<sizeof(_ECharT) * __CHAR_BIT__>;
using _Str = basic_string<_ECharT, _Traits, _Allocator>;
_Str __s(__a);
__s.reserve(__pn_.size());
_CVT()(std::back_inserter(__s), __pn_.data(), __pn_.data() + __pn_.size());
return __s;
}
# ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
_LIBCPP_HIDE_FROM_ABI std::wstring wstring() const { return string<wchar_t>(); }
# endif
_LIBCPP_HIDE_FROM_ABI std::u16string u16string() const { return string<char16_t>(); }
_LIBCPP_HIDE_FROM_ABI std::u32string u32string() const { return string<char32_t>(); }
# endif /* !_LIBCPP_HAS_NO_LOCALIZATION */
// generic format observers
_LIBCPP_HIDE_FROM_ABI std::string generic_string() const { return __pn_; }
# ifndef _LIBCPP_HAS_NO_CHAR8_T
_LIBCPP_HIDE_FROM_ABI std::u8string generic_u8string() const { return std::u8string(__pn_.begin(), __pn_.end()); }
# else
_LIBCPP_HIDE_FROM_ABI std::string generic_u8string() const { return __pn_; }
# endif
# if !defined(_LIBCPP_HAS_NO_LOCALIZATION)
template <class _ECharT, class _Traits = char_traits<_ECharT>, class _Allocator = allocator<_ECharT> >
_LIBCPP_HIDE_FROM_ABI basic_string<_ECharT, _Traits, _Allocator>
generic_string(const _Allocator& __a = _Allocator()) const {
return string<_ECharT, _Traits, _Allocator>(__a);
}
# ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
_LIBCPP_HIDE_FROM_ABI std::wstring generic_wstring() const { return string<wchar_t>(); }
# endif
_LIBCPP_HIDE_FROM_ABI std::u16string generic_u16string() const { return string<char16_t>(); }
_LIBCPP_HIDE_FROM_ABI std::u32string generic_u32string() const { return string<char32_t>(); }
# endif /* !_LIBCPP_HAS_NO_LOCALIZATION */
# endif /* !_LIBCPP_WIN32API */
private:
int __compare(__string_view) const;
__string_view __root_name() const;
__string_view __root_directory() const;
__string_view __root_path_raw() const;
__string_view __relative_path() const;
__string_view __parent_path() const;
__string_view __filename() const;
__string_view __stem() const;
__string_view __extension() const;
public:
// compare
_LIBCPP_HIDE_FROM_ABI int compare(const path& __p) const noexcept { return __compare(__p.__pn_); }
_LIBCPP_HIDE_FROM_ABI int compare(const string_type& __s) const { return __compare(__s); }
_LIBCPP_HIDE_FROM_ABI int compare(__string_view __s) const { return __compare(__s); }
_LIBCPP_HIDE_FROM_ABI int compare(const value_type* __s) const { return __compare(__s); }
// decomposition
_LIBCPP_HIDE_FROM_ABI path root_name() const { return string_type(__root_name()); }
_LIBCPP_HIDE_FROM_ABI path root_directory() const { return string_type(__root_directory()); }
_LIBCPP_HIDE_FROM_ABI path root_path() const {
# if defined(_LIBCPP_WIN32API)
return string_type(__root_path_raw());
# else
return root_name().append(string_type(__root_directory()));
# endif
}
_LIBCPP_HIDE_FROM_ABI path relative_path() const { return string_type(__relative_path()); }
_LIBCPP_HIDE_FROM_ABI path parent_path() const { return string_type(__parent_path()); }
_LIBCPP_HIDE_FROM_ABI path filename() const { return string_type(__filename()); }
_LIBCPP_HIDE_FROM_ABI path stem() const { return string_type(__stem()); }
_LIBCPP_HIDE_FROM_ABI path extension() const { return string_type(__extension()); }
// query
_LIBCPP_NODISCARD _LIBCPP_HIDE_FROM_ABI bool empty() const noexcept { return __pn_.empty(); }
_LIBCPP_HIDE_FROM_ABI bool has_root_name() const { return !__root_name().empty(); }
_LIBCPP_HIDE_FROM_ABI bool has_root_directory() const { return !__root_directory().empty(); }
_LIBCPP_HIDE_FROM_ABI bool has_root_path() const { return !__root_path_raw().empty(); }
_LIBCPP_HIDE_FROM_ABI bool has_relative_path() const { return !__relative_path().empty(); }
_LIBCPP_HIDE_FROM_ABI bool has_parent_path() const { return !__parent_path().empty(); }
_LIBCPP_HIDE_FROM_ABI bool has_filename() const { return !__filename().empty(); }
_LIBCPP_HIDE_FROM_ABI bool has_stem() const { return !__stem().empty(); }
_LIBCPP_HIDE_FROM_ABI bool has_extension() const { return !__extension().empty(); }
_LIBCPP_HIDE_FROM_ABI bool is_absolute() const {
# if defined(_LIBCPP_WIN32API)
__string_view __root_name_str = __root_name();
__string_view __root_dir = __root_directory();
if (__root_name_str.size() == 2 && __root_name_str[1] == ':') {
// A drive letter with no root directory is relative, e.g. x:example.
return !__root_dir.empty();
}
// If no root name, it's relative, e.g. \example is relative to the current drive
if (__root_name_str.empty())
return false;
if (__root_name_str.size() < 3)
return false;
// A server root name, like \\server, is always absolute
if (__root_name_str[0] != '/' && __root_name_str[0] != '\\')
return false;
if (__root_name_str[1] != '/' && __root_name_str[1] != '\\')
return false;
// Seems to be a server root name
return true;
# else
return has_root_directory();
# endif
}
_LIBCPP_HIDE_FROM_ABI bool is_relative() const { return !is_absolute(); }
// relative paths
path lexically_normal() const;
path lexically_relative(const path& __base) const;
_LIBCPP_HIDE_FROM_ABI path lexically_proximate(const path& __base) const {
path __result = this->lexically_relative(__base);
if (__result.native().empty())
return *this;
return __result;
}
// iterators
class _LIBCPP_EXPORTED_FROM_ABI iterator;
typedef iterator const_iterator;
iterator begin() const;
iterator end() const;
# if !defined(_LIBCPP_HAS_NO_LOCALIZATION)
template <
class _CharT,
class _Traits,
__enable_if_t<is_same<_CharT, value_type>::value && is_same<_Traits, char_traits<value_type> >::value, int> = 0>
_LIBCPP_HIDE_FROM_ABI friend basic_ostream<_CharT, _Traits>&
operator<<(basic_ostream<_CharT, _Traits>& __os, const path& __p) {
__os << std::__quoted(__p.native());
return __os;
}
template <
class _CharT,
class _Traits,
__enable_if_t<!is_same<_CharT, value_type>::value || !is_same<_Traits, char_traits<value_type> >::value, int> = 0>
_LIBCPP_HIDE_FROM_ABI friend basic_ostream<_CharT, _Traits>&
operator<<(basic_ostream<_CharT, _Traits>& __os, const path& __p) {
__os << std::__quoted(__p.string<_CharT, _Traits>());
return __os;
}
template <class _CharT, class _Traits>
_LIBCPP_HIDE_FROM_ABI friend basic_istream<_CharT, _Traits>&
operator>>(basic_istream<_CharT, _Traits>& __is, path& __p) {
basic_string<_CharT, _Traits> __tmp;
__is >> std::__quoted(__tmp);
__p = __tmp;
return __is;
}
# endif // !_LIBCPP_HAS_NO_LOCALIZATION
private:
inline _LIBCPP_HIDE_FROM_ABI path& __assign_view(__string_view const& __s) {
__pn_ = string_type(__s);
return *this;
}
string_type __pn_;
};
inline _LIBCPP_HIDE_FROM_ABI void swap(path& __lhs, path& __rhs) noexcept { __lhs.swap(__rhs); }
_LIBCPP_EXPORTED_FROM_ABI size_t hash_value(const path& __p) noexcept;
_LIBCPP_AVAILABILITY_FILESYSTEM_LIBRARY_POP
_LIBCPP_END_NAMESPACE_FILESYSTEM
_LIBCPP_BEGIN_NAMESPACE_STD
template <>
struct _LIBCPP_AVAILABILITY_FILESYSTEM_LIBRARY hash<filesystem::path> : __unary_function<filesystem::path, size_t> {
_LIBCPP_HIDE_FROM_ABI size_t operator()(filesystem::path const& __p) const noexcept {
return filesystem::hash_value(__p);
}
};
_LIBCPP_END_NAMESPACE_STD
#endif // _LIBCPP_STD_VER >= 17
_LIBCPP_POP_MACROS
#endif // _LIBCPP___FILESYSTEM_PATH_H
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