mirror of
https://github.com/autc04/Retro68.git
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1287 lines
35 KiB
C++
1287 lines
35 KiB
C++
// Class filesystem::path -*- C++ -*-
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// Copyright (C) 2014-2019 Free Software Foundation, Inc.
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 3, or (at your option)
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// any later version.
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// Under Section 7 of GPL version 3, you are granted additional
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// permissions described in the GCC Runtime Library Exception, version
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// 3.1, as published by the Free Software Foundation.
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// You should have received a copy of the GNU General Public License and
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// a copy of the GCC Runtime Library Exception along with this program;
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// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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// <http://www.gnu.org/licenses/>.
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/** @file include/bits/fs_path.h
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* This is an internal header file, included by other library headers.
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* Do not attempt to use it directly. @headername{filesystem}
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*/
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#ifndef _GLIBCXX_FS_PATH_H
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#define _GLIBCXX_FS_PATH_H 1
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#if __cplusplus >= 201703L
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#include <utility>
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#include <type_traits>
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#include <locale>
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#include <iosfwd>
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#include <iomanip>
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#include <codecvt>
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#include <string_view>
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#include <system_error>
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#include <bits/stl_algobase.h>
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#include <bits/locale_conv.h>
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#include <ext/concurrence.h>
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#include <bits/shared_ptr.h>
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#include <bits/unique_ptr.h>
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#if defined(_WIN32) && !defined(__CYGWIN__)
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# define _GLIBCXX_FILESYSTEM_IS_WINDOWS 1
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# include <algorithm>
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#endif
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namespace std _GLIBCXX_VISIBILITY(default)
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{
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_GLIBCXX_BEGIN_NAMESPACE_VERSION
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namespace filesystem
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{
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_GLIBCXX_BEGIN_NAMESPACE_CXX11
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/**
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* @ingroup filesystem
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* @{
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*/
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/// A filesystem path.
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class path
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{
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template<typename _CharT, typename _Ch = remove_const_t<_CharT>>
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using __is_encoded_char
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= __or_<is_same<_Ch, char>,
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#ifdef _GLIBCXX_USE_CHAR8_T
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is_same<_Ch, char8_t>,
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#endif
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is_same<_Ch, wchar_t>,
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is_same<_Ch, char16_t>,
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is_same<_Ch, char32_t>>;
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template<typename _Iter,
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typename _Iter_traits = std::iterator_traits<_Iter>>
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using __is_path_iter_src
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= __and_<__is_encoded_char<typename _Iter_traits::value_type>,
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std::is_base_of<std::input_iterator_tag,
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typename _Iter_traits::iterator_category>>;
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template<typename _Iter>
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static __is_path_iter_src<_Iter>
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__is_path_src(_Iter, int);
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template<typename _CharT, typename _Traits, typename _Alloc>
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static __is_encoded_char<_CharT>
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__is_path_src(const basic_string<_CharT, _Traits, _Alloc>&, int);
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template<typename _CharT, typename _Traits>
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static __is_encoded_char<_CharT>
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__is_path_src(const basic_string_view<_CharT, _Traits>&, int);
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template<typename _Unknown>
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static std::false_type
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__is_path_src(const _Unknown&, ...);
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template<typename _Tp1, typename _Tp2>
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struct __constructible_from;
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template<typename _Iter>
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struct __constructible_from<_Iter, _Iter>
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: __is_path_iter_src<_Iter>
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{ };
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template<typename _Source>
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struct __constructible_from<_Source, void>
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: decltype(__is_path_src(std::declval<_Source>(), 0))
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{ };
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template<typename _Tp1, typename _Tp2 = void>
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using _Path = typename
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std::enable_if<__and_<__not_<is_same<remove_cv_t<_Tp1>, path>>,
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__not_<is_void<_Tp1>>,
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__constructible_from<_Tp1, _Tp2>>::value,
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path>::type;
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template<typename _Source>
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static _Source
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_S_range_begin(_Source __begin) { return __begin; }
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struct __null_terminated { };
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template<typename _Source>
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static __null_terminated
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_S_range_end(_Source) { return {}; }
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template<typename _CharT, typename _Traits, typename _Alloc>
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static const _CharT*
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_S_range_begin(const basic_string<_CharT, _Traits, _Alloc>& __str)
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{ return __str.data(); }
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template<typename _CharT, typename _Traits, typename _Alloc>
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static const _CharT*
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_S_range_end(const basic_string<_CharT, _Traits, _Alloc>& __str)
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{ return __str.data() + __str.size(); }
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template<typename _CharT, typename _Traits>
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static const _CharT*
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_S_range_begin(const basic_string_view<_CharT, _Traits>& __str)
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{ return __str.data(); }
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template<typename _CharT, typename _Traits>
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static const _CharT*
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_S_range_end(const basic_string_view<_CharT, _Traits>& __str)
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{ return __str.data() + __str.size(); }
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template<typename _Tp,
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typename _Iter = decltype(_S_range_begin(std::declval<_Tp>())),
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typename _Val = typename std::iterator_traits<_Iter>::value_type>
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using __value_type_is_char
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= std::enable_if_t<std::is_same_v<std::remove_const_t<_Val>, char>>;
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public:
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#ifdef _GLIBCXX_FILESYSTEM_IS_WINDOWS
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typedef wchar_t value_type;
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static constexpr value_type preferred_separator = L'\\';
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#else
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typedef char value_type;
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static constexpr value_type preferred_separator = '/';
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#endif
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typedef std::basic_string<value_type> string_type;
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enum format : unsigned char { native_format, generic_format, auto_format };
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// constructors and destructor
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path() noexcept { }
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path(const path& __p) = default;
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path(path&& __p)
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#if _GLIBCXX_USE_CXX11_ABI || _GLIBCXX_FULLY_DYNAMIC_STRING == 0
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noexcept
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#endif
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: _M_pathname(std::move(__p._M_pathname)),
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_M_cmpts(std::move(__p._M_cmpts))
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{ __p.clear(); }
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path(string_type&& __source, format = auto_format)
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: _M_pathname(std::move(__source))
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{ _M_split_cmpts(); }
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template<typename _Source,
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typename _Require = _Path<_Source>>
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path(_Source const& __source, format = auto_format)
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: _M_pathname(_S_convert(_S_range_begin(__source),
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_S_range_end(__source)))
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{ _M_split_cmpts(); }
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template<typename _InputIterator,
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typename _Require = _Path<_InputIterator, _InputIterator>>
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path(_InputIterator __first, _InputIterator __last, format = auto_format)
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: _M_pathname(_S_convert(__first, __last))
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{ _M_split_cmpts(); }
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template<typename _Source,
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typename _Require = _Path<_Source>,
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typename _Require2 = __value_type_is_char<_Source>>
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path(_Source const& __source, const locale& __loc, format = auto_format)
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: _M_pathname(_S_convert_loc(_S_range_begin(__source),
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_S_range_end(__source), __loc))
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{ _M_split_cmpts(); }
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template<typename _InputIterator,
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typename _Require = _Path<_InputIterator, _InputIterator>,
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typename _Require2 = __value_type_is_char<_InputIterator>>
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path(_InputIterator __first, _InputIterator __last, const locale& __loc,
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format = auto_format)
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: _M_pathname(_S_convert_loc(__first, __last, __loc))
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{ _M_split_cmpts(); }
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~path() = default;
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// assignments
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path& operator=(const path&);
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path& operator=(path&&) noexcept;
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path& operator=(string_type&& __source);
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path& assign(string_type&& __source);
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template<typename _Source>
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_Path<_Source>&
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operator=(_Source const& __source)
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{ return *this = path(__source); }
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template<typename _Source>
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_Path<_Source>&
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assign(_Source const& __source)
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{ return *this = path(__source); }
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template<typename _InputIterator>
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_Path<_InputIterator, _InputIterator>&
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assign(_InputIterator __first, _InputIterator __last)
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{ return *this = path(__first, __last); }
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// appends
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path& operator/=(const path& __p);
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template <class _Source>
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_Path<_Source>&
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operator/=(_Source const& __source)
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{
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_M_append(_S_convert(_S_range_begin(__source), _S_range_end(__source)));
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return *this;
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}
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template<typename _Source>
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_Path<_Source>&
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append(_Source const& __source)
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{
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_M_append(_S_convert(_S_range_begin(__source), _S_range_end(__source)));
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return *this;
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}
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template<typename _InputIterator>
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_Path<_InputIterator, _InputIterator>&
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append(_InputIterator __first, _InputIterator __last)
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{
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_M_append(_S_convert(__first, __last));
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return *this;
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}
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// concatenation
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path& operator+=(const path& __x);
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path& operator+=(const string_type& __x);
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path& operator+=(const value_type* __x);
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path& operator+=(value_type __x);
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path& operator+=(basic_string_view<value_type> __x);
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template<typename _Source>
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_Path<_Source>&
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operator+=(_Source const& __x) { return concat(__x); }
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template<typename _CharT>
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_Path<_CharT*, _CharT*>&
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operator+=(_CharT __x);
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template<typename _Source>
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_Path<_Source>&
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concat(_Source const& __x)
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{
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_M_concat(_S_convert(_S_range_begin(__x), _S_range_end(__x)));
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return *this;
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}
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template<typename _InputIterator>
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_Path<_InputIterator, _InputIterator>&
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concat(_InputIterator __first, _InputIterator __last)
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{
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_M_concat(_S_convert(__first, __last));
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return *this;
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}
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// modifiers
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void clear() noexcept { _M_pathname.clear(); _M_split_cmpts(); }
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path& make_preferred();
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path& remove_filename();
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path& replace_filename(const path& __replacement);
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path& replace_extension(const path& __replacement = path());
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void swap(path& __rhs) noexcept;
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// native format observers
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const string_type& native() const noexcept { return _M_pathname; }
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const value_type* c_str() const noexcept { return _M_pathname.c_str(); }
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operator string_type() const { return _M_pathname; }
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template<typename _CharT, typename _Traits = std::char_traits<_CharT>,
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typename _Allocator = std::allocator<_CharT>>
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std::basic_string<_CharT, _Traits, _Allocator>
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string(const _Allocator& __a = _Allocator()) const;
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std::string string() const;
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#if _GLIBCXX_USE_WCHAR_T
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std::wstring wstring() const;
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#endif
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#ifdef _GLIBCXX_USE_CHAR8_T
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__attribute__((__abi_tag__("__u8")))
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std::u8string u8string() const;
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#else
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std::string u8string() const;
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#endif // _GLIBCXX_USE_CHAR8_T
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std::u16string u16string() const;
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std::u32string u32string() const;
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// generic format observers
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template<typename _CharT, typename _Traits = std::char_traits<_CharT>,
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typename _Allocator = std::allocator<_CharT>>
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std::basic_string<_CharT, _Traits, _Allocator>
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generic_string(const _Allocator& __a = _Allocator()) const;
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std::string generic_string() const;
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#if _GLIBCXX_USE_WCHAR_T
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std::wstring generic_wstring() const;
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#endif
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#ifdef _GLIBCXX_USE_CHAR8_T
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__attribute__((__abi_tag__("__u8")))
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std::u8string generic_u8string() const;
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#else
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std::string generic_u8string() const;
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#endif // _GLIBCXX_USE_CHAR8_T
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std::u16string generic_u16string() const;
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std::u32string generic_u32string() const;
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// compare
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int compare(const path& __p) const noexcept;
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int compare(const string_type& __s) const noexcept;
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int compare(const value_type* __s) const noexcept;
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int compare(basic_string_view<value_type> __s) const noexcept;
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// decomposition
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path root_name() const;
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path root_directory() const;
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path root_path() const;
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path relative_path() const;
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path parent_path() const;
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path filename() const;
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path stem() const;
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path extension() const;
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// query
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[[nodiscard]] bool empty() const noexcept { return _M_pathname.empty(); }
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bool has_root_name() const noexcept;
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bool has_root_directory() const noexcept;
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bool has_root_path() const noexcept;
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bool has_relative_path() const noexcept;
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bool has_parent_path() const noexcept;
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bool has_filename() const noexcept;
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bool has_stem() const noexcept;
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bool has_extension() const noexcept;
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bool is_absolute() const noexcept;
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bool is_relative() const noexcept { return !is_absolute(); }
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// generation
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path lexically_normal() const;
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path lexically_relative(const path& base) const;
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path lexically_proximate(const path& base) const;
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// iterators
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class iterator;
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typedef iterator const_iterator;
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iterator begin() const;
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iterator end() const;
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/// Write a path to a stream
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template<typename _CharT, typename _Traits>
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friend std::basic_ostream<_CharT, _Traits>&
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operator<<(std::basic_ostream<_CharT, _Traits>& __os, const path& __p)
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{
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__os << std::quoted(__p.string<_CharT, _Traits>());
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return __os;
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}
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/// Read a path from a stream
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template<typename _CharT, typename _Traits>
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friend std::basic_istream<_CharT, _Traits>&
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operator>>(std::basic_istream<_CharT, _Traits>& __is, path& __p)
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{
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std::basic_string<_CharT, _Traits> __tmp;
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if (__is >> std::quoted(__tmp))
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__p = std::move(__tmp);
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return __is;
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}
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// non-member operators
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/// Compare paths
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friend bool operator<(const path& __lhs, const path& __rhs) noexcept
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{ return __lhs.compare(__rhs) < 0; }
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/// Compare paths
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friend bool operator<=(const path& __lhs, const path& __rhs) noexcept
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{ return !(__rhs < __lhs); }
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/// Compare paths
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friend bool operator>(const path& __lhs, const path& __rhs) noexcept
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{ return __rhs < __lhs; }
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/// Compare paths
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friend bool operator>=(const path& __lhs, const path& __rhs) noexcept
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{ return !(__lhs < __rhs); }
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/// Compare paths
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friend bool operator==(const path& __lhs, const path& __rhs) noexcept
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{ return __lhs.compare(__rhs) == 0; }
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/// Compare paths
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friend bool operator!=(const path& __lhs, const path& __rhs) noexcept
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{ return !(__lhs == __rhs); }
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/// Append one path to another
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friend path operator/(const path& __lhs, const path& __rhs)
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{
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path __result(__lhs);
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__result /= __rhs;
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return __result;
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}
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// Create a basic_string by reading until a null character.
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template<typename _InputIterator,
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typename _Traits = std::iterator_traits<_InputIterator>,
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typename _CharT
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= typename std::remove_cv_t<typename _Traits::value_type>>
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static std::basic_string<_CharT>
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_S_string_from_iter(_InputIterator __source)
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{
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std::basic_string<_CharT> __str;
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for (_CharT __ch = *__source; __ch != _CharT(); __ch = *++__source)
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__str.push_back(__ch);
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return __str;
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}
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private:
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enum class _Type : unsigned char {
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_Multi = 0, _Root_name, _Root_dir, _Filename
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};
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path(basic_string_view<value_type> __str, _Type __type)
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: _M_pathname(__str)
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{
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__glibcxx_assert(__type != _Type::_Multi);
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_M_cmpts.type(__type);
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}
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enum class _Split { _Stem, _Extension };
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void _M_append(basic_string_view<value_type>);
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void _M_concat(basic_string_view<value_type>);
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pair<const string_type*, size_t> _M_find_extension() const noexcept;
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template<typename _CharT>
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struct _Cvt;
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static basic_string_view<value_type>
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_S_convert(value_type* __src, __null_terminated)
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{ return __src; }
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static basic_string_view<value_type>
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_S_convert(const value_type* __src, __null_terminated)
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{ return __src; }
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static basic_string_view<value_type>
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_S_convert(value_type* __first, value_type* __last)
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{ return {__first, __last - __first}; }
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static basic_string_view<value_type>
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_S_convert(const value_type* __first, const value_type* __last)
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{ return {__first, __last - __first}; }
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template<typename _Iter>
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static string_type
|
|
_S_convert(_Iter __first, _Iter __last)
|
|
{
|
|
using __value_type = typename std::iterator_traits<_Iter>::value_type;
|
|
return _Cvt<typename remove_cv<__value_type>::type>::
|
|
_S_convert(__first, __last);
|
|
}
|
|
|
|
template<typename _InputIterator>
|
|
static string_type
|
|
_S_convert(_InputIterator __src, __null_terminated)
|
|
{
|
|
// Read from iterator into basic_string until a null value is seen:
|
|
auto __s = _S_string_from_iter(__src);
|
|
// Convert (if needed) from iterator's value type to path::value_type:
|
|
return string_type(_S_convert(__s.data(), __s.data() + __s.size()));
|
|
}
|
|
|
|
static string_type
|
|
_S_convert_loc(const char* __first, const char* __last,
|
|
const std::locale& __loc);
|
|
|
|
template<typename _Iter>
|
|
static string_type
|
|
_S_convert_loc(_Iter __first, _Iter __last, const std::locale& __loc)
|
|
{
|
|
const std::string __str(__first, __last);
|
|
return _S_convert_loc(__str.data(), __str.data()+__str.size(), __loc);
|
|
}
|
|
|
|
template<typename _InputIterator>
|
|
static string_type
|
|
_S_convert_loc(_InputIterator __src, __null_terminated,
|
|
const std::locale& __loc)
|
|
{
|
|
std::string __s = _S_string_from_iter(__src);
|
|
return _S_convert_loc(__s.data(), __s.data() + __s.size(), __loc);
|
|
}
|
|
|
|
template<typename _CharT, typename _Traits, typename _Allocator>
|
|
static basic_string<_CharT, _Traits, _Allocator>
|
|
_S_str_convert(const string_type&, const _Allocator& __a);
|
|
|
|
void _M_split_cmpts();
|
|
|
|
_Type _M_type() const noexcept { return _M_cmpts.type(); }
|
|
|
|
string_type _M_pathname;
|
|
|
|
struct _Cmpt;
|
|
|
|
struct _List
|
|
{
|
|
using value_type = _Cmpt;
|
|
using iterator = value_type*;
|
|
using const_iterator = const value_type*;
|
|
|
|
_List();
|
|
_List(const _List&);
|
|
_List(_List&&) = default;
|
|
_List& operator=(const _List&);
|
|
_List& operator=(_List&&) = default;
|
|
~_List() = default;
|
|
|
|
_Type type() const noexcept
|
|
{ return _Type{reinterpret_cast<uintptr_t>(_M_impl.get()) & 0x3}; }
|
|
|
|
void type(_Type) noexcept;
|
|
|
|
int size() const noexcept; // zero unless type() == _Type::_Multi
|
|
bool empty() const noexcept; // true unless type() == _Type::_Multi
|
|
void clear();
|
|
void swap(_List& __l) noexcept { _M_impl.swap(__l._M_impl); }
|
|
int capacity() const noexcept;
|
|
void reserve(int, bool); ///< @pre type() == _Type::_Multi
|
|
|
|
// All the member functions below here have a precondition !empty()
|
|
// (and they should only be called from within the library).
|
|
|
|
iterator begin();
|
|
iterator end();
|
|
const_iterator begin() const;
|
|
const_iterator end() const;
|
|
|
|
value_type& front() noexcept;
|
|
value_type& back() noexcept;
|
|
const value_type& front() const noexcept;
|
|
const value_type& back() const noexcept;
|
|
|
|
void pop_back();
|
|
void _M_erase_from(const_iterator __pos); // erases [__pos,end())
|
|
|
|
struct _Impl;
|
|
struct _Impl_deleter
|
|
{
|
|
void operator()(_Impl*) const noexcept;
|
|
};
|
|
unique_ptr<_Impl, _Impl_deleter> _M_impl;
|
|
};
|
|
_List _M_cmpts;
|
|
|
|
struct _Parser;
|
|
};
|
|
|
|
inline void swap(path& __lhs, path& __rhs) noexcept { __lhs.swap(__rhs); }
|
|
|
|
size_t hash_value(const path& __p) noexcept;
|
|
|
|
template<typename _InputIterator>
|
|
inline auto
|
|
u8path(_InputIterator __first, _InputIterator __last)
|
|
-> decltype(filesystem::path(__first, __last, std::locale::classic()))
|
|
{
|
|
#ifdef _GLIBCXX_FILESYSTEM_IS_WINDOWS
|
|
codecvt_utf8<path::value_type> __cvt;
|
|
path::string_type __tmp;
|
|
if constexpr (is_pointer_v<_InputIterator>)
|
|
{
|
|
if (__str_codecvt_in(__first, __last, __tmp, __cvt))
|
|
return path{ __tmp };
|
|
}
|
|
else
|
|
{
|
|
const std::string __u8str{__first, __last};
|
|
const char* const __ptr = __u8str.data();
|
|
if (__str_codecvt_in(__ptr, __ptr + __u8str.size(), __tmp, __cvt))
|
|
return path{ __tmp };
|
|
}
|
|
return {};
|
|
#else
|
|
return path{ __first, __last };
|
|
#endif
|
|
}
|
|
|
|
template<typename _Source>
|
|
inline auto
|
|
u8path(const _Source& __source)
|
|
-> decltype(filesystem::path(__source, std::locale::classic()))
|
|
{
|
|
#ifdef _GLIBCXX_FILESYSTEM_IS_WINDOWS
|
|
if constexpr (is_convertible_v<const _Source&, std::string_view>)
|
|
{
|
|
const std::string_view __s = __source;
|
|
return filesystem::u8path(__s.data(), __s.data() + __s.size());
|
|
}
|
|
else
|
|
{
|
|
std::string __s = path::_S_string_from_iter(__source);
|
|
return filesystem::u8path(__s.data(), __s.data() + __s.size());
|
|
}
|
|
#else
|
|
return path{ __source };
|
|
#endif
|
|
}
|
|
|
|
class filesystem_error : public std::system_error
|
|
{
|
|
public:
|
|
filesystem_error(const string& __what_arg, error_code __ec);
|
|
|
|
filesystem_error(const string& __what_arg, const path& __p1,
|
|
error_code __ec);
|
|
|
|
filesystem_error(const string& __what_arg, const path& __p1,
|
|
const path& __p2, error_code __ec);
|
|
|
|
filesystem_error(const filesystem_error&) = default;
|
|
filesystem_error& operator=(const filesystem_error&) = default;
|
|
|
|
// No move constructor or assignment operator.
|
|
// Copy rvalues instead, so that _M_impl is not left empty.
|
|
|
|
~filesystem_error();
|
|
|
|
const path& path1() const noexcept;
|
|
const path& path2() const noexcept;
|
|
const char* what() const noexcept;
|
|
|
|
private:
|
|
struct _Impl;
|
|
std::__shared_ptr<const _Impl> _M_impl;
|
|
};
|
|
|
|
struct path::_Cmpt : path
|
|
{
|
|
_Cmpt(basic_string_view<value_type> __s, _Type __t, size_t __pos)
|
|
: path(__s, __t), _M_pos(__pos) { }
|
|
|
|
_Cmpt() : _M_pos(-1) { }
|
|
|
|
size_t _M_pos;
|
|
};
|
|
|
|
// specialize _Cvt for degenerate 'noconv' case
|
|
template<>
|
|
struct path::_Cvt<path::value_type>
|
|
{
|
|
template<typename _Iter>
|
|
static string_type
|
|
_S_convert(_Iter __first, _Iter __last)
|
|
{ return string_type{__first, __last}; }
|
|
};
|
|
|
|
template<typename _CharT>
|
|
struct path::_Cvt
|
|
{
|
|
#ifdef _GLIBCXX_FILESYSTEM_IS_WINDOWS
|
|
static string_type
|
|
_S_wconvert(const char* __f, const char* __l, true_type)
|
|
{
|
|
using _Cvt = std::codecvt<wchar_t, char, mbstate_t>;
|
|
const auto& __cvt = std::use_facet<_Cvt>(std::locale{});
|
|
std::wstring __wstr;
|
|
if (__str_codecvt_in(__f, __l, __wstr, __cvt))
|
|
return __wstr;
|
|
_GLIBCXX_THROW_OR_ABORT(filesystem_error(
|
|
"Cannot convert character sequence",
|
|
std::make_error_code(errc::illegal_byte_sequence)));
|
|
}
|
|
|
|
static string_type
|
|
_S_wconvert(const _CharT* __f, const _CharT* __l, false_type)
|
|
{
|
|
std::codecvt_utf8<_CharT> __cvt;
|
|
std::string __str;
|
|
if (__str_codecvt_out(__f, __l, __str, __cvt))
|
|
{
|
|
const char* __f2 = __str.data();
|
|
const char* __l2 = __f2 + __str.size();
|
|
std::codecvt_utf8<wchar_t> __wcvt;
|
|
std::wstring __wstr;
|
|
if (__str_codecvt_in(__f2, __l2, __wstr, __wcvt))
|
|
return __wstr;
|
|
}
|
|
_GLIBCXX_THROW_OR_ABORT(filesystem_error(
|
|
"Cannot convert character sequence",
|
|
std::make_error_code(errc::illegal_byte_sequence)));
|
|
}
|
|
|
|
static string_type
|
|
_S_convert(const _CharT* __f, const _CharT* __l)
|
|
{
|
|
return _S_wconvert(__f, __l, is_same<_CharT, char>{});
|
|
}
|
|
#else
|
|
static string_type
|
|
_S_convert(const _CharT* __f, const _CharT* __l)
|
|
{
|
|
#ifdef _GLIBCXX_USE_CHAR8_T
|
|
if constexpr (is_same_v<_CharT, char8_t>)
|
|
{
|
|
string_type __str(__f, __l);
|
|
return __str;
|
|
}
|
|
else
|
|
{
|
|
#endif
|
|
std::codecvt_utf8<_CharT> __cvt;
|
|
std::string __str;
|
|
if (__str_codecvt_out(__f, __l, __str, __cvt))
|
|
return __str;
|
|
#ifdef _GLIBCXX_USE_CHAR8_T
|
|
}
|
|
#endif
|
|
_GLIBCXX_THROW_OR_ABORT(filesystem_error(
|
|
"Cannot convert character sequence",
|
|
std::make_error_code(errc::illegal_byte_sequence)));
|
|
}
|
|
#endif
|
|
|
|
static string_type
|
|
_S_convert(_CharT* __f, _CharT* __l)
|
|
{
|
|
return _S_convert(const_cast<const _CharT*>(__f),
|
|
const_cast<const _CharT*>(__l));
|
|
}
|
|
|
|
template<typename _Iter>
|
|
static string_type
|
|
_S_convert(_Iter __first, _Iter __last)
|
|
{
|
|
const std::basic_string<_CharT> __str(__first, __last);
|
|
return _S_convert(__str.data(), __str.data() + __str.size());
|
|
}
|
|
|
|
template<typename _Iter, typename _Cont>
|
|
static string_type
|
|
_S_convert(__gnu_cxx::__normal_iterator<_Iter, _Cont> __first,
|
|
__gnu_cxx::__normal_iterator<_Iter, _Cont> __last)
|
|
{ return _S_convert(__first.base(), __last.base()); }
|
|
};
|
|
|
|
/// An iterator for the components of a path
|
|
class path::iterator
|
|
{
|
|
public:
|
|
using difference_type = std::ptrdiff_t;
|
|
using value_type = path;
|
|
using reference = const path&;
|
|
using pointer = const path*;
|
|
using iterator_category = std::bidirectional_iterator_tag;
|
|
|
|
iterator() : _M_path(nullptr), _M_cur(), _M_at_end() { }
|
|
|
|
iterator(const iterator&) = default;
|
|
iterator& operator=(const iterator&) = default;
|
|
|
|
reference operator*() const;
|
|
pointer operator->() const { return std::__addressof(**this); }
|
|
|
|
iterator& operator++();
|
|
iterator operator++(int) { auto __tmp = *this; ++*this; return __tmp; }
|
|
|
|
iterator& operator--();
|
|
iterator operator--(int) { auto __tmp = *this; --*this; return __tmp; }
|
|
|
|
friend bool operator==(const iterator& __lhs, const iterator& __rhs)
|
|
{ return __lhs._M_equals(__rhs); }
|
|
|
|
friend bool operator!=(const iterator& __lhs, const iterator& __rhs)
|
|
{ return !__lhs._M_equals(__rhs); }
|
|
|
|
private:
|
|
friend class path;
|
|
|
|
bool _M_is_multi() const { return _M_path->_M_type() == _Type::_Multi; }
|
|
|
|
friend difference_type
|
|
__path_iter_distance(const iterator& __first, const iterator& __last)
|
|
{
|
|
__glibcxx_assert(__first._M_path != nullptr);
|
|
__glibcxx_assert(__first._M_path == __last._M_path);
|
|
if (__first._M_is_multi())
|
|
return std::distance(__first._M_cur, __last._M_cur);
|
|
else if (__first._M_at_end == __last._M_at_end)
|
|
return 0;
|
|
else
|
|
return __first._M_at_end ? -1 : 1;
|
|
}
|
|
|
|
friend void
|
|
__path_iter_advance(iterator& __i, difference_type __n)
|
|
{
|
|
if (__n == 1)
|
|
++__i;
|
|
else if (__n == -1)
|
|
--__i;
|
|
else if (__n != 0)
|
|
{
|
|
__glibcxx_assert(__i._M_path != nullptr);
|
|
__glibcxx_assert(__i._M_is_multi());
|
|
// __glibcxx_assert(__i._M_path->_M_cmpts.end() - __i._M_cur >= __n);
|
|
__i._M_cur += __n;
|
|
}
|
|
}
|
|
|
|
iterator(const path* __path, path::_List::const_iterator __iter)
|
|
: _M_path(__path), _M_cur(__iter), _M_at_end()
|
|
{ }
|
|
|
|
iterator(const path* __path, bool __at_end)
|
|
: _M_path(__path), _M_cur(), _M_at_end(__at_end)
|
|
{ }
|
|
|
|
bool _M_equals(iterator) const;
|
|
|
|
const path* _M_path;
|
|
path::_List::const_iterator _M_cur;
|
|
bool _M_at_end; // only used when type != _Multi
|
|
};
|
|
|
|
|
|
inline path&
|
|
path::operator=(path&& __p) noexcept
|
|
{
|
|
if (&__p == this) [[__unlikely__]]
|
|
return *this;
|
|
|
|
_M_pathname = std::move(__p._M_pathname);
|
|
_M_cmpts = std::move(__p._M_cmpts);
|
|
__p.clear();
|
|
return *this;
|
|
}
|
|
|
|
inline path&
|
|
path::operator=(string_type&& __source)
|
|
{ return *this = path(std::move(__source)); }
|
|
|
|
inline path&
|
|
path::assign(string_type&& __source)
|
|
{ return *this = path(std::move(__source)); }
|
|
|
|
inline path&
|
|
path::operator+=(const string_type& __x)
|
|
{
|
|
_M_concat(__x);
|
|
return *this;
|
|
}
|
|
|
|
inline path&
|
|
path::operator+=(const value_type* __x)
|
|
{
|
|
_M_concat(__x);
|
|
return *this;
|
|
}
|
|
|
|
inline path&
|
|
path::operator+=(value_type __x)
|
|
{
|
|
_M_concat(basic_string_view<value_type>(&__x, 1));
|
|
return *this;
|
|
}
|
|
|
|
inline path&
|
|
path::operator+=(basic_string_view<value_type> __x)
|
|
{
|
|
_M_concat(__x);
|
|
return *this;
|
|
}
|
|
|
|
template<typename _CharT>
|
|
inline path::_Path<_CharT*, _CharT*>&
|
|
path::operator+=(_CharT __x)
|
|
{
|
|
auto* __addr = std::__addressof(__x);
|
|
return concat(__addr, __addr + 1);
|
|
}
|
|
|
|
inline path&
|
|
path::make_preferred()
|
|
{
|
|
#ifdef _GLIBCXX_FILESYSTEM_IS_WINDOWS
|
|
std::replace(_M_pathname.begin(), _M_pathname.end(), L'/',
|
|
preferred_separator);
|
|
#endif
|
|
return *this;
|
|
}
|
|
|
|
inline void path::swap(path& __rhs) noexcept
|
|
{
|
|
_M_pathname.swap(__rhs._M_pathname);
|
|
_M_cmpts.swap(__rhs._M_cmpts);
|
|
}
|
|
|
|
template<typename _CharT, typename _Traits, typename _Allocator>
|
|
std::basic_string<_CharT, _Traits, _Allocator>
|
|
path::_S_str_convert(const string_type& __str, const _Allocator& __a)
|
|
{
|
|
if (__str.size() == 0)
|
|
return std::basic_string<_CharT, _Traits, _Allocator>(__a);
|
|
|
|
const value_type* __first = __str.data();
|
|
const value_type* __last = __first + __str.size();
|
|
|
|
#ifdef _GLIBCXX_FILESYSTEM_IS_WINDOWS
|
|
using _CharAlloc = __alloc_rebind<_Allocator, char>;
|
|
using _String = basic_string<char, char_traits<char>, _CharAlloc>;
|
|
using _WString = basic_string<_CharT, _Traits, _Allocator>;
|
|
|
|
// use codecvt_utf8<wchar_t> to convert native string to UTF-8
|
|
codecvt_utf8<value_type> __cvt;
|
|
_String __u8str{_CharAlloc{__a}};
|
|
if (__str_codecvt_out(__first, __last, __u8str, __cvt))
|
|
{
|
|
if constexpr (is_same_v<_CharT, char>)
|
|
return __u8str;
|
|
#ifdef _GLIBCXX_USE_CHAR8_T
|
|
else if constexpr (is_same_v<_CharT, char8_t>)
|
|
{
|
|
const char* __f = __u8str.data();
|
|
const char* __l = __f + __u8str.size();
|
|
_WString __wstr(__f, __l);
|
|
return __wstr;
|
|
}
|
|
#endif
|
|
else
|
|
{
|
|
_WString __wstr;
|
|
// use codecvt_utf8<_CharT> to convert UTF-8 to wide string
|
|
codecvt_utf8<_CharT> __cvt;
|
|
const char* __f = __u8str.data();
|
|
const char* __l = __f + __u8str.size();
|
|
if (__str_codecvt_in(__f, __l, __wstr, __cvt))
|
|
return __wstr;
|
|
}
|
|
}
|
|
#else
|
|
#ifdef _GLIBCXX_USE_CHAR8_T
|
|
if constexpr (is_same_v<_CharT, char8_t>)
|
|
{
|
|
basic_string<_CharT, _Traits, _Allocator> __wstr{__first, __last, __a};
|
|
return __wstr;
|
|
}
|
|
else
|
|
{
|
|
#endif
|
|
codecvt_utf8<_CharT> __cvt;
|
|
basic_string<_CharT, _Traits, _Allocator> __wstr{__a};
|
|
if (__str_codecvt_in(__first, __last, __wstr, __cvt))
|
|
return __wstr;
|
|
#ifdef _GLIBCXX_USE_CHAR8_T
|
|
}
|
|
#endif
|
|
#endif
|
|
_GLIBCXX_THROW_OR_ABORT(filesystem_error(
|
|
"Cannot convert character sequence",
|
|
std::make_error_code(errc::illegal_byte_sequence)));
|
|
}
|
|
|
|
template<typename _CharT, typename _Traits, typename _Allocator>
|
|
inline basic_string<_CharT, _Traits, _Allocator>
|
|
path::string(const _Allocator& __a) const
|
|
{
|
|
if constexpr (is_same_v<_CharT, value_type>)
|
|
return { _M_pathname, __a };
|
|
else
|
|
return _S_str_convert<_CharT, _Traits>(_M_pathname, __a);
|
|
}
|
|
|
|
inline std::string
|
|
path::string() const { return string<char>(); }
|
|
|
|
#if _GLIBCXX_USE_WCHAR_T
|
|
inline std::wstring
|
|
path::wstring() const { return string<wchar_t>(); }
|
|
#endif
|
|
|
|
#ifdef _GLIBCXX_USE_CHAR8_T
|
|
inline std::u8string
|
|
path::u8string() const { return string<char8_t>(); }
|
|
#else
|
|
inline std::string
|
|
path::u8string() const
|
|
{
|
|
#ifdef _GLIBCXX_FILESYSTEM_IS_WINDOWS
|
|
std::string __str;
|
|
// convert from native encoding to UTF-8
|
|
codecvt_utf8<value_type> __cvt;
|
|
const value_type* __first = _M_pathname.data();
|
|
const value_type* __last = __first + _M_pathname.size();
|
|
if (__str_codecvt_out(__first, __last, __str, __cvt))
|
|
return __str;
|
|
_GLIBCXX_THROW_OR_ABORT(filesystem_error(
|
|
"Cannot convert character sequence",
|
|
std::make_error_code(errc::illegal_byte_sequence)));
|
|
#else
|
|
return _M_pathname;
|
|
#endif
|
|
}
|
|
#endif // _GLIBCXX_USE_CHAR8_T
|
|
|
|
inline std::u16string
|
|
path::u16string() const { return string<char16_t>(); }
|
|
|
|
inline std::u32string
|
|
path::u32string() const { return string<char32_t>(); }
|
|
|
|
template<typename _CharT, typename _Traits, typename _Allocator>
|
|
inline std::basic_string<_CharT, _Traits, _Allocator>
|
|
path::generic_string(const _Allocator& __a) const
|
|
{
|
|
#ifdef _GLIBCXX_FILESYSTEM_IS_WINDOWS
|
|
const value_type __slash = L'/';
|
|
#else
|
|
const value_type __slash = '/';
|
|
#endif
|
|
string_type __str(__a);
|
|
|
|
if (_M_type() == _Type::_Root_dir)
|
|
__str.assign(1, __slash);
|
|
else
|
|
{
|
|
__str.reserve(_M_pathname.size());
|
|
bool __add_slash = false;
|
|
for (auto& __elem : *this)
|
|
{
|
|
if (__add_slash)
|
|
__str += __slash;
|
|
__str += __elem._M_pathname;
|
|
__add_slash = __elem._M_type() == _Type::_Filename;
|
|
}
|
|
}
|
|
|
|
if constexpr (is_same_v<_CharT, value_type>)
|
|
return __str;
|
|
else
|
|
return _S_str_convert<_CharT, _Traits>(__str, __a);
|
|
}
|
|
|
|
inline std::string
|
|
path::generic_string() const
|
|
{ return generic_string<char>(); }
|
|
|
|
#if _GLIBCXX_USE_WCHAR_T
|
|
inline std::wstring
|
|
path::generic_wstring() const
|
|
{ return generic_string<wchar_t>(); }
|
|
#endif
|
|
|
|
#ifdef _GLIBCXX_USE_CHAR8_T
|
|
inline std::u8string
|
|
path::generic_u8string() const
|
|
{ return generic_string<char8_t>(); }
|
|
#else
|
|
inline std::string
|
|
path::generic_u8string() const
|
|
{ return generic_string(); }
|
|
#endif
|
|
|
|
inline std::u16string
|
|
path::generic_u16string() const
|
|
{ return generic_string<char16_t>(); }
|
|
|
|
inline std::u32string
|
|
path::generic_u32string() const
|
|
{ return generic_string<char32_t>(); }
|
|
|
|
inline int
|
|
path::compare(const string_type& __s) const noexcept
|
|
{ return compare(basic_string_view<value_type>(__s)); }
|
|
|
|
inline int
|
|
path::compare(const value_type* __s) const noexcept
|
|
{ return compare(basic_string_view<value_type>(__s)); }
|
|
|
|
inline path
|
|
path::filename() const
|
|
{
|
|
if (empty())
|
|
return {};
|
|
else if (_M_type() == _Type::_Filename)
|
|
return *this;
|
|
else if (_M_type() == _Type::_Multi)
|
|
{
|
|
if (_M_pathname.back() == preferred_separator)
|
|
return {};
|
|
auto& __last = *--end();
|
|
if (__last._M_type() == _Type::_Filename)
|
|
return __last;
|
|
}
|
|
return {};
|
|
}
|
|
|
|
inline path
|
|
path::stem() const
|
|
{
|
|
auto ext = _M_find_extension();
|
|
if (ext.first && ext.second != 0)
|
|
return path{ext.first->substr(0, ext.second)};
|
|
return {};
|
|
}
|
|
|
|
inline path
|
|
path::extension() const
|
|
{
|
|
auto ext = _M_find_extension();
|
|
if (ext.first && ext.second != string_type::npos)
|
|
return path{ext.first->substr(ext.second)};
|
|
return {};
|
|
}
|
|
|
|
inline bool
|
|
path::has_stem() const noexcept
|
|
{
|
|
auto ext = _M_find_extension();
|
|
return ext.first && ext.second != 0;
|
|
}
|
|
|
|
inline bool
|
|
path::has_extension() const noexcept
|
|
{
|
|
auto ext = _M_find_extension();
|
|
return ext.first && ext.second != string_type::npos;
|
|
}
|
|
|
|
inline bool
|
|
path::is_absolute() const noexcept
|
|
{
|
|
#ifdef _GLIBCXX_FILESYSTEM_IS_WINDOWS
|
|
return has_root_name() && has_root_directory();
|
|
#else
|
|
return has_root_directory();
|
|
#endif
|
|
}
|
|
|
|
inline path::iterator
|
|
path::begin() const
|
|
{
|
|
if (_M_type() == _Type::_Multi)
|
|
return iterator(this, _M_cmpts.begin());
|
|
return iterator(this, empty());
|
|
}
|
|
|
|
inline path::iterator
|
|
path::end() const
|
|
{
|
|
if (_M_type() == _Type::_Multi)
|
|
return iterator(this, _M_cmpts.end());
|
|
return iterator(this, true);
|
|
}
|
|
|
|
inline path::iterator&
|
|
path::iterator::operator++()
|
|
{
|
|
__glibcxx_assert(_M_path != nullptr);
|
|
if (_M_path->_M_type() == _Type::_Multi)
|
|
{
|
|
__glibcxx_assert(_M_cur != _M_path->_M_cmpts.end());
|
|
++_M_cur;
|
|
}
|
|
else
|
|
{
|
|
__glibcxx_assert(!_M_at_end);
|
|
_M_at_end = true;
|
|
}
|
|
return *this;
|
|
}
|
|
|
|
inline path::iterator&
|
|
path::iterator::operator--()
|
|
{
|
|
__glibcxx_assert(_M_path != nullptr);
|
|
if (_M_path->_M_type() == _Type::_Multi)
|
|
{
|
|
__glibcxx_assert(_M_cur != _M_path->_M_cmpts.begin());
|
|
--_M_cur;
|
|
}
|
|
else
|
|
{
|
|
__glibcxx_assert(_M_at_end);
|
|
_M_at_end = false;
|
|
}
|
|
return *this;
|
|
}
|
|
|
|
inline path::iterator::reference
|
|
path::iterator::operator*() const
|
|
{
|
|
__glibcxx_assert(_M_path != nullptr);
|
|
if (_M_path->_M_type() == _Type::_Multi)
|
|
{
|
|
__glibcxx_assert(_M_cur != _M_path->_M_cmpts.end());
|
|
return *_M_cur;
|
|
}
|
|
return *_M_path;
|
|
}
|
|
|
|
inline bool
|
|
path::iterator::_M_equals(iterator __rhs) const
|
|
{
|
|
if (_M_path != __rhs._M_path)
|
|
return false;
|
|
if (_M_path == nullptr)
|
|
return true;
|
|
if (_M_path->_M_type() == path::_Type::_Multi)
|
|
return _M_cur == __rhs._M_cur;
|
|
return _M_at_end == __rhs._M_at_end;
|
|
}
|
|
|
|
// @} group filesystem
|
|
_GLIBCXX_END_NAMESPACE_CXX11
|
|
} // namespace filesystem
|
|
|
|
inline ptrdiff_t
|
|
distance(filesystem::path::iterator __first, filesystem::path::iterator __last)
|
|
{ return __path_iter_distance(__first, __last); }
|
|
|
|
template<typename _InputIterator, typename _Distance>
|
|
void
|
|
advance(filesystem::path::iterator& __i, _Distance __n)
|
|
{ __path_iter_advance(__i, static_cast<ptrdiff_t>(__n)); }
|
|
|
|
extern template class __shared_ptr<const filesystem::filesystem_error::_Impl>;
|
|
|
|
_GLIBCXX_END_NAMESPACE_VERSION
|
|
} // namespace std
|
|
|
|
#endif // C++17
|
|
|
|
#endif // _GLIBCXX_FS_PATH_H
|