From dccd8f3c2ab9245a3b5dcf673924e9a22462faae Mon Sep 17 00:00:00 2001 From: Elliott Hughes Date: Wed, 5 Jun 2024 13:09:01 +0000 Subject: [PATCH] Remove android.hardware.automotive@libc++fs. It's no longer used (now libc++fs is part of libc++), and it's dangerously opting out of the global cpp_std default. Bug: http://b/344590580 Change-Id: I17648b573600ff2ee1ab45383c7fda7d5bcfc7a2 --- .../can/1.0/default/libc++fs/.clang-format | 13 - .../can/1.0/default/libc++fs/Android.bp | 70 - .../libc++fs/include/automotive/filesystem | 2713 ----------------- .../src/filesystem/directory_iterator.cpp | 405 --- .../src/filesystem/filesystem_common.h | 441 --- .../libc++fs/src/filesystem/operations.cpp | 1780 ----------- 6 files changed, 5422 deletions(-) delete mode 100644 automotive/can/1.0/default/libc++fs/.clang-format delete mode 100644 automotive/can/1.0/default/libc++fs/Android.bp delete mode 100644 automotive/can/1.0/default/libc++fs/include/automotive/filesystem delete mode 100644 automotive/can/1.0/default/libc++fs/src/filesystem/directory_iterator.cpp delete mode 100644 automotive/can/1.0/default/libc++fs/src/filesystem/filesystem_common.h delete mode 100644 automotive/can/1.0/default/libc++fs/src/filesystem/operations.cpp diff --git a/automotive/can/1.0/default/libc++fs/.clang-format b/automotive/can/1.0/default/libc++fs/.clang-format deleted file mode 100644 index dd596813fb..0000000000 --- a/automotive/can/1.0/default/libc++fs/.clang-format +++ /dev/null @@ -1,13 +0,0 @@ -BasedOnStyle: LLVM - ---- -Language: Cpp -Standard: Cpp03 - -AlwaysBreakTemplateDeclarations: true -PointerAlignment: Left - -# Disable formatting options which may break tests. -SortIncludes: false -ReflowComments: false ---- diff --git a/automotive/can/1.0/default/libc++fs/Android.bp b/automotive/can/1.0/default/libc++fs/Android.bp deleted file mode 100644 index 06419919ac..0000000000 --- a/automotive/can/1.0/default/libc++fs/Android.bp +++ /dev/null @@ -1,70 +0,0 @@ -// -// Copyright (C) 2020 The Android Open Source Project -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. -// - -// TODO(152067309): Stop building this yourself once it's ABI stable and has -// been made vendor available. Just use libc++fs instead of this. - -package { - // See: http://go/android-license-faq - // A large-scale-change added 'default_applicable_licenses' to import - // all of the 'license_kinds' from "hardware_interfaces_license" - // to get the below license kinds: - // SPDX-license-identifier-NCSA - default_applicable_licenses: ["hardware_interfaces_license"], -} - -cc_defaults { - name: "android.hardware.automotive@libc++fsdefaults", - local_include_dirs: ["include"], - export_include_dirs: ["include"], - cflags: [ - "-Wall", - "-Werror", - "-Wno-unused-parameter", - ], - cppflags: [ - "-std=c++17", - "-fexceptions", - "-DLIBCXX_BUILDING_LIBCXXABI", - "-D_LIBCPP_BUILDING_LIBRARY", - ], - rtti: true, -} - -cc_library_static { - name: "android.hardware.automotive@libc++fs", - recovery_available: true, - vendor: true, - defaults: ["android.hardware.automotive@libc++fsdefaults"], - srcs: [ - "src/filesystem/directory_iterator.cpp", - "src/filesystem/operations.cpp", - ], - multilib: { - lib32: { - // off_t usage is constrained to within the libc++ source (not the - // headers), so we can build the filesystem library with a 64-bit - // off_t on LP32 to get large file support without needing all users - // of the library to match. - cflags: ["-D_FILE_OFFSET_BITS=64"], - }, - }, - target: { - windows: { - enabled: false, - }, - }, -} diff --git a/automotive/can/1.0/default/libc++fs/include/automotive/filesystem b/automotive/can/1.0/default/libc++fs/include/automotive/filesystem deleted file mode 100644 index bd3dda5518..0000000000 --- a/automotive/can/1.0/default/libc++fs/include/automotive/filesystem +++ /dev/null @@ -1,2713 +0,0 @@ -// -*- C++ -*- -//===--------------------------- filesystem -------------------------------===// -// -// The LLVM Compiler Infrastructure -// -// This file is dual licensed under the MIT and the University of Illinois Open -// Source Licenses. See LICENSE.TXT for details. -// -//===----------------------------------------------------------------------===// -#ifndef _LIBAUTO_FILESYSTEM -#define _LIBAUTO_FILESYSTEM - -// TODO(152067309): Remove this once the libc++ upgrade is complete. -#include <__config> -#if defined(_LIBCPP_VERSION) && _LIBCPP_VERSION > 8000 - -#include -namespace android::hardware::automotive { -namespace filesystem = std::filesystem; -} - -#else - -/* - filesystem synopsis - - namespace android::hardware::automotive { namespace filesystem { - - class path; - - void swap(path& lhs, path& rhs) noexcept; - size_t hash_value(const path& p) noexcept; - - bool operator==(const path& lhs, const path& rhs) noexcept; - bool operator!=(const path& lhs, const path& rhs) noexcept; - bool operator< (const path& lhs, const path& rhs) noexcept; - bool operator<=(const path& lhs, const path& rhs) noexcept; - bool operator> (const path& lhs, const path& rhs) noexcept; - bool operator>=(const path& lhs, const path& rhs) noexcept; - - path operator/ (const path& lhs, const path& rhs); - - // fs.path.io operators are friends of path. - template - friend basic_ostream& - operator<<(basic_ostream& os, const path& p); - - template - friend basic_istream& - operator>>(basic_istream& is, path& p); - - template - path u8path(const Source& source); - template - path u8path(InputIterator first, InputIterator last); - - class filesystem_error; - class directory_entry; - - class directory_iterator; - - // enable directory_iterator range-based for statements - directory_iterator begin(directory_iterator iter) noexcept; - directory_iterator end(const directory_iterator&) noexcept; - - class recursive_directory_iterator; - - // enable recursive_directory_iterator range-based for statements - recursive_directory_iterator begin(recursive_directory_iterator iter) noexcept; - recursive_directory_iterator end(const recursive_directory_iterator&) noexcept; - - class file_status; - - struct space_info - { - uintmax_t capacity; - uintmax_t free; - uintmax_t available; - }; - - enum class file_type; - enum class perms; - enum class perm_options; - enum class copy_options; - enum class directory_options; - - typedef chrono::time_point file_time_type; - - // operational functions - - path absolute(const path& p); - path absolute(const path& p, error_code &ec); - - path canonical(const path& p); - path canonical(const path& p, error_code& ec); - - void copy(const path& from, const path& to); - void copy(const path& from, const path& to, error_code& ec); - void copy(const path& from, const path& to, copy_options options); - void copy(const path& from, const path& to, copy_options options, - error_code& ec); - - bool copy_file(const path& from, const path& to); - bool copy_file(const path& from, const path& to, error_code& ec); - bool copy_file(const path& from, const path& to, copy_options option); - bool copy_file(const path& from, const path& to, copy_options option, - error_code& ec); - - void copy_symlink(const path& existing_symlink, const path& new_symlink); - void copy_symlink(const path& existing_symlink, const path& new_symlink, - error_code& ec) noexcept; - - bool create_directories(const path& p); - bool create_directories(const path& p, error_code& ec); - - bool create_directory(const path& p); - bool create_directory(const path& p, error_code& ec) noexcept; - - bool create_directory(const path& p, const path& attributes); - bool create_directory(const path& p, const path& attributes, - error_code& ec) noexcept; - - void create_directory_symlink(const path& to, const path& new_symlink); - void create_directory_symlink(const path& to, const path& new_symlink, - error_code& ec) noexcept; - - void create_hard_link(const path& to, const path& new_hard_link); - void create_hard_link(const path& to, const path& new_hard_link, - error_code& ec) noexcept; - - void create_symlink(const path& to, const path& new_symlink); - void create_symlink(const path& to, const path& new_symlink, - error_code& ec) noexcept; - - path current_path(); - path current_path(error_code& ec); - void current_path(const path& p); - void current_path(const path& p, error_code& ec) noexcept; - - bool exists(file_status s) noexcept; - bool exists(const path& p); - bool exists(const path& p, error_code& ec) noexcept; - - bool equivalent(const path& p1, const path& p2); - bool equivalent(const path& p1, const path& p2, error_code& ec) noexcept; - - uintmax_t file_size(const path& p); - uintmax_t file_size(const path& p, error_code& ec) noexcept; - - uintmax_t hard_link_count(const path& p); - uintmax_t hard_link_count(const path& p, error_code& ec) noexcept; - - bool is_block_file(file_status s) noexcept; - bool is_block_file(const path& p); - bool is_block_file(const path& p, error_code& ec) noexcept; - - bool is_character_file(file_status s) noexcept; - bool is_character_file(const path& p); - bool is_character_file(const path& p, error_code& ec) noexcept; - - bool is_directory(file_status s) noexcept; - bool is_directory(const path& p); - bool is_directory(const path& p, error_code& ec) noexcept; - - bool is_empty(const path& p); - bool is_empty(const path& p, error_code& ec) noexcept; - - bool is_fifo(file_status s) noexcept; - bool is_fifo(const path& p); - bool is_fifo(const path& p, error_code& ec) noexcept; - - bool is_other(file_status s) noexcept; - bool is_other(const path& p); - bool is_other(const path& p, error_code& ec) noexcept; - - bool is_regular_file(file_status s) noexcept; - bool is_regular_file(const path& p); - bool is_regular_file(const path& p, error_code& ec) noexcept; - - bool is_socket(file_status s) noexcept; - bool is_socket(const path& p); - bool is_socket(const path& p, error_code& ec) noexcept; - - bool is_symlink(file_status s) noexcept; - bool is_symlink(const path& p); - bool is_symlink(const path& p, error_code& ec) noexcept; - - file_time_type last_write_time(const path& p); - file_time_type last_write_time(const path& p, error_code& ec) noexcept; - void last_write_time(const path& p, file_time_type new_time); - void last_write_time(const path& p, file_time_type new_time, - error_code& ec) noexcept; - - void permissions(const path& p, perms prms, - perm_options opts=perm_options::replace); - void permissions(const path& p, perms prms, error_code& ec) noexcept; - void permissions(const path& p, perms prms, perm_options opts, - error_code& ec); - - path proximate(const path& p, error_code& ec); - path proximate(const path& p, const path& base = current_path()); - path proximate(const path& p, const path& base, error_code &ec); - - path read_symlink(const path& p); - path read_symlink(const path& p, error_code& ec); - - path relative(const path& p, error_code& ec); - path relative(const path& p, const path& base=current_path()); - path relative(const path& p, const path& base, error_code& ec); - - bool remove(const path& p); - bool remove(const path& p, error_code& ec) noexcept; - - uintmax_t remove_all(const path& p); - uintmax_t remove_all(const path& p, error_code& ec); - - void rename(const path& from, const path& to); - void rename(const path& from, const path& to, error_code& ec) noexcept; - - void resize_file(const path& p, uintmax_t size); - void resize_file(const path& p, uintmax_t size, error_code& ec) noexcept; - - space_info space(const path& p); - space_info space(const path& p, error_code& ec) noexcept; - - file_status status(const path& p); - file_status status(const path& p, error_code& ec) noexcept; - - bool status_known(file_status s) noexcept; - - file_status symlink_status(const path& p); - file_status symlink_status(const path& p, error_code& ec) noexcept; - - path temp_directory_path(); - path temp_directory_path(error_code& ec); - - path weakly_canonical(path const& p); - path weakly_canonical(path const& p, error_code& ec); - - -} } // namespace android::hardware::automotive::filesystem - -*/ - -#include <__config> -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include // for quoted -#include -#include - -#include <__debug> - -#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) -#pragma GCC system_header -#endif - -_LIBCPP_PUSH_MACROS -#include <__undef_macros> - -#ifndef _LIBCPP_CXX03_LANG - -namespace android::hardware::automotive::filesystem { -using namespace std; -using namespace std::chrono; - -using std::basic_string; -using std::enable_if; -using std::error_code; -using std::false_type; - -#ifndef _VSTD -#define _LIBAUTO_UNDEF_VSTD -#define _VSTD std -#endif - -#ifdef _VSTD_FS -#pragma push_macro("_VSTD_FS") -#else -#define _LIBAUTO_UNDEF_VSTD_FS -#endif -#define _VSTD_FS android::hardware::automotive::filesystem - -/* Begin copy of _FilesystemClock from include/chrono */ -struct _FilesystemClock { -#if !defined(_LIBCPP_HAS_NO_INT128) - typedef __int128_t rep; - typedef nano period; -#else - typedef long long rep; - typedef nano period; -#endif - - typedef chrono::duration duration; - typedef chrono::time_point<_FilesystemClock> time_point; - - static _LIBCPP_CONSTEXPR_AFTER_CXX11 const bool is_steady = false; - - _LIBCPP_FUNC_VIS static time_point now() noexcept; - - _LIBCPP_INLINE_VISIBILITY - static time_t to_time_t(const time_point& __t) noexcept { - typedef chrono::duration __secs; - return time_t( - chrono::duration_cast<__secs>(__t.time_since_epoch()).count()); - } - - _LIBCPP_INLINE_VISIBILITY - static time_point from_time_t(time_t __t) noexcept { - typedef chrono::duration __secs; - return time_point(__secs(__t)); - } -}; -/* End copy of _FilesystemClock from include/chrono */ - -typedef chrono::time_point<_FilesystemClock> file_time_type; - -struct _LIBCPP_TYPE_VIS space_info { - uintmax_t capacity; - uintmax_t free; - uintmax_t available; -}; - -enum class _LIBCPP_ENUM_VIS file_type : signed char { - none = 0, - not_found = -1, - regular = 1, - directory = 2, - symlink = 3, - block = 4, - character = 5, - fifo = 6, - socket = 7, - unknown = 8 -}; - -enum class _LIBCPP_ENUM_VIS perms : unsigned { - none = 0, - - owner_read = 0400, - owner_write = 0200, - owner_exec = 0100, - owner_all = 0700, - - group_read = 040, - group_write = 020, - group_exec = 010, - group_all = 070, - - others_read = 04, - others_write = 02, - others_exec = 01, - others_all = 07, - - all = 0777, - - set_uid = 04000, - set_gid = 02000, - sticky_bit = 01000, - mask = 07777, - unknown = 0xFFFF, -}; - -_LIBCPP_INLINE_VISIBILITY -inline constexpr perms operator&(perms _LHS, perms _RHS) { - return static_cast(static_cast(_LHS) & - static_cast(_RHS)); -} - -_LIBCPP_INLINE_VISIBILITY -inline constexpr perms operator|(perms _LHS, perms _RHS) { - return static_cast(static_cast(_LHS) | - static_cast(_RHS)); -} - -_LIBCPP_INLINE_VISIBILITY -inline constexpr perms operator^(perms _LHS, perms _RHS) { - return static_cast(static_cast(_LHS) ^ - static_cast(_RHS)); -} - -_LIBCPP_INLINE_VISIBILITY -inline constexpr perms operator~(perms _LHS) { - return static_cast(~static_cast(_LHS)); -} - -_LIBCPP_INLINE_VISIBILITY -inline perms& operator&=(perms& _LHS, perms _RHS) { return _LHS = _LHS & _RHS; } - -_LIBCPP_INLINE_VISIBILITY -inline perms& operator|=(perms& _LHS, perms _RHS) { return _LHS = _LHS | _RHS; } - -_LIBCPP_INLINE_VISIBILITY -inline perms& operator^=(perms& _LHS, perms _RHS) { return _LHS = _LHS ^ _RHS; } - -enum class _LIBCPP_ENUM_VIS perm_options : unsigned char { - replace = 1, - add = 2, - remove = 4, - nofollow = 8 -}; - -_LIBCPP_INLINE_VISIBILITY -inline constexpr perm_options operator&(perm_options _LHS, perm_options _RHS) { - return static_cast(static_cast(_LHS) & - static_cast(_RHS)); -} - -_LIBCPP_INLINE_VISIBILITY -inline constexpr perm_options operator|(perm_options _LHS, perm_options _RHS) { - return static_cast(static_cast(_LHS) | - static_cast(_RHS)); -} - -_LIBCPP_INLINE_VISIBILITY -inline constexpr perm_options operator^(perm_options _LHS, perm_options _RHS) { - return static_cast(static_cast(_LHS) ^ - static_cast(_RHS)); -} - -_LIBCPP_INLINE_VISIBILITY -inline constexpr perm_options operator~(perm_options _LHS) { - return static_cast(~static_cast(_LHS)); -} - -_LIBCPP_INLINE_VISIBILITY -inline perm_options& operator&=(perm_options& _LHS, perm_options _RHS) { - return _LHS = _LHS & _RHS; -} - -_LIBCPP_INLINE_VISIBILITY -inline perm_options& operator|=(perm_options& _LHS, perm_options _RHS) { - return _LHS = _LHS | _RHS; -} - -_LIBCPP_INLINE_VISIBILITY -inline perm_options& operator^=(perm_options& _LHS, perm_options _RHS) { - return _LHS = _LHS ^ _RHS; -} - -enum class _LIBCPP_ENUM_VIS copy_options : unsigned short { - none = 0, - skip_existing = 1, - overwrite_existing = 2, - update_existing = 4, - recursive = 8, - copy_symlinks = 16, - skip_symlinks = 32, - directories_only = 64, - create_symlinks = 128, - create_hard_links = 256, - __in_recursive_copy = 512, -}; - -_LIBCPP_INLINE_VISIBILITY -inline constexpr copy_options operator&(copy_options _LHS, copy_options _RHS) { - return static_cast(static_cast(_LHS) & - static_cast(_RHS)); -} - -_LIBCPP_INLINE_VISIBILITY -inline constexpr copy_options operator|(copy_options _LHS, copy_options _RHS) { - return static_cast(static_cast(_LHS) | - static_cast(_RHS)); -} - -_LIBCPP_INLINE_VISIBILITY -inline constexpr copy_options operator^(copy_options _LHS, copy_options _RHS) { - return static_cast(static_cast(_LHS) ^ - static_cast(_RHS)); -} - -_LIBCPP_INLINE_VISIBILITY -inline constexpr copy_options operator~(copy_options _LHS) { - return static_cast(~static_cast(_LHS)); -} - -_LIBCPP_INLINE_VISIBILITY -inline copy_options& operator&=(copy_options& _LHS, copy_options _RHS) { - return _LHS = _LHS & _RHS; -} - -_LIBCPP_INLINE_VISIBILITY -inline copy_options& operator|=(copy_options& _LHS, copy_options _RHS) { - return _LHS = _LHS | _RHS; -} - -_LIBCPP_INLINE_VISIBILITY -inline copy_options& operator^=(copy_options& _LHS, copy_options _RHS) { - return _LHS = _LHS ^ _RHS; -} - -enum class _LIBCPP_ENUM_VIS directory_options : unsigned char { - none = 0, - follow_directory_symlink = 1, - skip_permission_denied = 2 -}; - -_LIBCPP_INLINE_VISIBILITY -inline constexpr directory_options operator&(directory_options _LHS, - directory_options _RHS) { - return static_cast(static_cast(_LHS) & - static_cast(_RHS)); -} - -_LIBCPP_INLINE_VISIBILITY -inline constexpr directory_options operator|(directory_options _LHS, - directory_options _RHS) { - return static_cast(static_cast(_LHS) | - static_cast(_RHS)); -} - -_LIBCPP_INLINE_VISIBILITY -inline constexpr directory_options operator^(directory_options _LHS, - directory_options _RHS) { - return static_cast(static_cast(_LHS) ^ - static_cast(_RHS)); -} - -_LIBCPP_INLINE_VISIBILITY -inline constexpr directory_options operator~(directory_options _LHS) { - return static_cast(~static_cast(_LHS)); -} - -_LIBCPP_INLINE_VISIBILITY -inline directory_options& operator&=(directory_options& _LHS, - directory_options _RHS) { - return _LHS = _LHS & _RHS; -} - -_LIBCPP_INLINE_VISIBILITY -inline directory_options& operator|=(directory_options& _LHS, - directory_options _RHS) { - return _LHS = _LHS | _RHS; -} - -_LIBCPP_INLINE_VISIBILITY -inline directory_options& operator^=(directory_options& _LHS, - directory_options _RHS) { - return _LHS = _LHS ^ _RHS; -} - -class _LIBCPP_TYPE_VIS file_status { -public: - // constructors - _LIBCPP_INLINE_VISIBILITY - file_status() noexcept : file_status(file_type::none) {} - _LIBCPP_INLINE_VISIBILITY - explicit file_status(file_type __ft, perms __prms = perms::unknown) noexcept - : __ft_(__ft), - __prms_(__prms) {} - - file_status(const file_status&) noexcept = default; - file_status(file_status&&) noexcept = default; - - _LIBCPP_INLINE_VISIBILITY - ~file_status() {} - - file_status& operator=(const file_status&) noexcept = default; - file_status& operator=(file_status&&) noexcept = default; - - // observers - _LIBCPP_INLINE_VISIBILITY - file_type type() const noexcept { return __ft_; } - - _LIBCPP_INLINE_VISIBILITY - perms permissions() const noexcept { return __prms_; } - - // modifiers - _LIBCPP_INLINE_VISIBILITY - void type(file_type __ft) noexcept { __ft_ = __ft; } - - _LIBCPP_INLINE_VISIBILITY - void permissions(perms __p) noexcept { __prms_ = __p; } - -private: - file_type __ft_; - perms __prms_; -}; - -class _LIBCPP_TYPE_VIS directory_entry; - -template -struct __can_convert_char { - static const bool value = false; -}; -template -struct __can_convert_char : public __can_convert_char<_Tp> {}; -template <> -struct __can_convert_char { - static const bool value = true; - using __char_type = char; -}; -template <> -struct __can_convert_char { - static const bool value = true; - using __char_type = wchar_t; -}; -template <> -struct __can_convert_char { - static const bool value = true; - using __char_type = char16_t; -}; -template <> -struct __can_convert_char { - static const bool value = true; - using __char_type = char32_t; -}; - -template -typename enable_if<__can_convert_char<_ECharT>::value, bool>::type -__is_separator(_ECharT __e) { - return __e == _ECharT('/'); -} - -struct _NullSentinal {}; - -template -using _Void = void; - -template -struct __is_pathable_string : public false_type {}; - -template -struct __is_pathable_string< - basic_string<_ECharT, _Traits, _Alloc>, - _Void::__char_type> > - : public __can_convert_char<_ECharT> { - using _Str = basic_string<_ECharT, _Traits, _Alloc>; - using _Base = __can_convert_char<_ECharT>; - static _ECharT const* __range_begin(_Str const& __s) { return __s.data(); } - static _ECharT const* __range_end(_Str const& __s) { - return __s.data() + __s.length(); - } - static _ECharT __first_or_null(_Str const& __s) { - return __s.empty() ? _ECharT{} : __s[0]; - } -}; - -template -struct __is_pathable_string< - basic_string_view<_ECharT, _Traits>, - _Void::__char_type> > - : public __can_convert_char<_ECharT> { - using _Str = basic_string_view<_ECharT, _Traits>; - using _Base = __can_convert_char<_ECharT>; - static _ECharT const* __range_begin(_Str const& __s) { return __s.data(); } - static _ECharT const* __range_end(_Str const& __s) { - return __s.data() + __s.length(); - } - static _ECharT __first_or_null(_Str const& __s) { - return __s.empty() ? _ECharT{} : __s[0]; - } -}; - -template ::type, - class _UnqualPtrType = - typename remove_const::type>::type, - bool _IsCharPtr = is_pointer<_DS>::value&& - __can_convert_char<_UnqualPtrType>::value> -struct __is_pathable_char_array : false_type {}; - -template -struct __is_pathable_char_array<_Source, _ECharT*, _UPtr, true> - : __can_convert_char::type> { - using _Base = __can_convert_char::type>; - - static _ECharT const* __range_begin(const _ECharT* __b) { return __b; } - static _ECharT const* __range_end(const _ECharT* __b) { - using _Iter = const _ECharT*; - const _ECharT __sentinal = _ECharT{}; - _Iter __e = __b; - for (; *__e != __sentinal; ++__e) - ; - return __e; - } - - static _ECharT __first_or_null(const _ECharT* __b) { return *__b; } -}; - -template ::value, - class = void> -struct __is_pathable_iter : false_type {}; - -template -struct __is_pathable_iter< - _Iter, true, - _Void::value_type>::__char_type> > - : __can_convert_char::value_type> { - using _ECharT = typename iterator_traits<_Iter>::value_type; - using _Base = __can_convert_char<_ECharT>; - - static _Iter __range_begin(_Iter __b) { return __b; } - static _NullSentinal __range_end(_Iter) { return _NullSentinal{}; } - - static _ECharT __first_or_null(_Iter __b) { return *__b; } -}; - -template ::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 -struct __is_pathable<_Tp, true, false, false> : __is_pathable_string<_Tp> {}; - -template -struct __is_pathable<_Tp, false, true, false> : __is_pathable_char_array<_Tp> { -}; - -template -struct __is_pathable<_Tp, false, false, true> : __is_pathable_iter<_Tp> {}; - -template -struct _PathCVT { - static_assert(__can_convert_char<_ECharT>::value, - "Char type not convertible"); - - typedef __narrow_to_utf8 _Narrower; - - static void __append_range(string& __dest, _ECharT const* __b, - _ECharT const* __e) { - _Narrower()(back_inserter(__dest), __b, __e); - } - - template - static void __append_range(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); - _Narrower()(back_inserter(__dest), __tmp.data(), - __tmp.data() + __tmp.length()); - } - - template - static void __append_range(string& __dest, _Iter __b, _NullSentinal) { - static_assert(!is_same<_Iter, _ECharT*>::value, "Call const overload"); - const _ECharT __sentinal = _ECharT{}; - if (*__b == __sentinal) - return; - basic_string<_ECharT> __tmp; - for (; *__b != __sentinal; ++__b) - __tmp.push_back(*__b); - _Narrower()(back_inserter(__dest), __tmp.data(), - __tmp.data() + __tmp.length()); - } - - template - static void __append_source(string& __dest, _Source const& __s) { - using _Traits = __is_pathable<_Source>; - __append_range(__dest, _Traits::__range_begin(__s), - _Traits::__range_end(__s)); - } -}; - -template <> -struct _PathCVT { - - template - static typename enable_if<__is_exactly_input_iterator<_Iter>::value>::type - __append_range(string& __dest, _Iter __b, _Iter __e) { - for (; __b != __e; ++__b) - __dest.push_back(*__b); - } - - template - static typename enable_if<__is_forward_iterator<_Iter>::value>::type - __append_range(string& __dest, _Iter __b, _Iter __e) { - __dest.__append_forward_unsafe(__b, __e); - } - - template - static void __append_range(string& __dest, _Iter __b, _NullSentinal) { - const char __sentinal = char{}; - for (; *__b != __sentinal; ++__b) - __dest.push_back(*__b); - } - - template - static void __append_source(string& __dest, _Source const& __s) { - using _Traits = __is_pathable<_Source>; - __append_range(__dest, _Traits::__range_begin(__s), - _Traits::__range_end(__s)); - } -}; - -class _LIBCPP_TYPE_VIS path { - template - using _EnableIfPathable = - typename enable_if<__is_pathable<_SourceOrIter>::value, _Tp>::type; - - template - using _SourceChar = typename __is_pathable<_Tp>::__char_type; - - template - using _SourceCVT = _PathCVT<_SourceChar<_Tp> >; - -public: - typedef char value_type; - typedef basic_string string_type; - typedef _VSTD::string_view __string_view; - static constexpr value_type preferred_separator = '/'; - - enum class _LIBCPP_ENUM_VIS format : unsigned char { - auto_format, - native_format, - generic_format - }; - - // constructors and destructor - _LIBCPP_INLINE_VISIBILITY path() noexcept {} - _LIBCPP_INLINE_VISIBILITY path(const path& __p) : __pn_(__p.__pn_) {} - _LIBCPP_INLINE_VISIBILITY path(path&& __p) noexcept - : __pn_(_VSTD::move(__p.__pn_)) {} - - _LIBCPP_INLINE_VISIBILITY - path(string_type&& __s, format = format::auto_format) noexcept - : __pn_(_VSTD::move(__s)) {} - - template > - path(const _Source& __src, format = format::auto_format) { - _SourceCVT<_Source>::__append_source(__pn_, __src); - } - - template - path(_InputIt __first, _InputIt __last, format = format::auto_format) { - typedef typename iterator_traits<_InputIt>::value_type _ItVal; - _PathCVT<_ItVal>::__append_range(__pn_, __first, __last); - } - - // TODO Implement locale conversions. - template > - path(const _Source& __src, const locale& __loc, format = format::auto_format); - template - path(_InputIt __first, _InputIt _last, const locale& __loc, - format = format::auto_format); - - _LIBCPP_INLINE_VISIBILITY - ~path() = default; - - // assignments - _LIBCPP_INLINE_VISIBILITY - path& operator=(const path& __p) { - __pn_ = __p.__pn_; - return *this; - } - - _LIBCPP_INLINE_VISIBILITY - path& operator=(path&& __p) noexcept { - __pn_ = _VSTD::move(__p.__pn_); - return *this; - } - - template - _LIBCPP_INLINE_VISIBILITY path& operator=(string_type&& __s) noexcept { - __pn_ = _VSTD::move(__s); - return *this; - } - - _LIBCPP_INLINE_VISIBILITY - path& assign(string_type&& __s) noexcept { - __pn_ = _VSTD::move(__s); - return *this; - } - - template - _LIBCPP_INLINE_VISIBILITY _EnableIfPathable<_Source> - operator=(const _Source& __src) { - return this->assign(__src); - } - - template - _EnableIfPathable<_Source> assign(const _Source& __src) { - __pn_.clear(); - _SourceCVT<_Source>::__append_source(__pn_, __src); - return *this; - } - - template - 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; - } - -private: - template - static bool __source_is_absolute(_ECharT __first_or_null) { - return __is_separator(__first_or_null); - } - -public: - // appends - 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 - _LIBCPP_INLINE_VISIBILITY _EnableIfPathable<_Source> - operator/=(const _Source& __src) { - return this->append(__src); - } - - template - _EnableIfPathable<_Source> append(const _Source& __src) { - using _Traits = __is_pathable<_Source>; - using _CVT = _PathCVT<_SourceChar<_Source> >; - if (__source_is_absolute(_Traits::__first_or_null(__src))) - __pn_.clear(); - else if (has_filename()) - __pn_ += preferred_separator; - _CVT::__append_source(__pn_, __src); - return *this; - } - - template - 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 && __source_is_absolute(*__first)) - __pn_.clear(); - else if (has_filename()) - __pn_ += preferred_separator; - _CVT::__append_range(__pn_, __first, __last); - return *this; - } - - // concatenation - _LIBCPP_INLINE_VISIBILITY - path& operator+=(const path& __x) { - __pn_ += __x.__pn_; - return *this; - } - - _LIBCPP_INLINE_VISIBILITY - path& operator+=(const string_type& __x) { - __pn_ += __x; - return *this; - } - - _LIBCPP_INLINE_VISIBILITY - path& operator+=(__string_view __x) { - __pn_ += __x; - return *this; - } - - _LIBCPP_INLINE_VISIBILITY - path& operator+=(const value_type* __x) { - __pn_ += __x; - return *this; - } - - _LIBCPP_INLINE_VISIBILITY - path& operator+=(value_type __x) { - __pn_ += __x; - return *this; - } - - template - typename enable_if<__can_convert_char<_ECharT>::value, path&>::type - operator+=(_ECharT __x) { - basic_string<_ECharT> __tmp; - __tmp += __x; - _PathCVT<_ECharT>::__append_source(__pn_, __tmp); - return *this; - } - - template - _EnableIfPathable<_Source> operator+=(const _Source& __x) { - return this->concat(__x); - } - - template - _EnableIfPathable<_Source> concat(const _Source& __x) { - _SourceCVT<_Source>::__append_source(__pn_, __x); - return *this; - } - - template - 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_INLINE_VISIBILITY - void clear() noexcept { __pn_.clear(); } - - path& make_preferred() { return *this; } - - _LIBCPP_INLINE_VISIBILITY - path& remove_filename() { - auto __fname = __filename(); - if (!__fname.empty()) - __pn_.erase(__fname.data() - __pn_.data()); - return *this; - } - - path& replace_filename(const path& __replacement) { - remove_filename(); - return (*this /= __replacement); - } - - path& replace_extension(const path& __replacement = path()); - - _LIBCPP_INLINE_VISIBILITY - void swap(path& __rhs) noexcept { __pn_.swap(__rhs.__pn_); } - - // private helper to allow reserving memory in the path - _LIBCPP_INLINE_VISIBILITY - void __reserve(size_t __s) { __pn_.reserve(__s); } - - // native format observers - _LIBCPP_INLINE_VISIBILITY - const string_type& native() const noexcept { return __pn_; } - - _LIBCPP_INLINE_VISIBILITY - const value_type* c_str() const noexcept { return __pn_.c_str(); } - - _LIBCPP_INLINE_VISIBILITY operator string_type() const { return __pn_; } - - template , - class _Allocator = allocator<_ECharT> > - basic_string<_ECharT, _Traits, _Allocator> - string(const _Allocator& __a = _Allocator()) const { - using _CVT = __widen_from_utf8; - using _Str = basic_string<_ECharT, _Traits, _Allocator>; - _Str __s(__a); - __s.reserve(__pn_.size()); - _CVT()(back_inserter(__s), __pn_.data(), __pn_.data() + __pn_.size()); - return __s; - } - - _LIBCPP_INLINE_VISIBILITY std::string string() const { return __pn_; } - _LIBCPP_INLINE_VISIBILITY std::wstring wstring() const { - return string(); - } - _LIBCPP_INLINE_VISIBILITY std::string u8string() const { return __pn_; } - _LIBCPP_INLINE_VISIBILITY std::u16string u16string() const { - return string(); - } - _LIBCPP_INLINE_VISIBILITY std::u32string u32string() const { - return string(); - } - - // generic format observers - template , - class _Allocator = allocator<_ECharT> > - basic_string<_ECharT, _Traits, _Allocator> - generic_string(const _Allocator& __a = _Allocator()) const { - return string<_ECharT, _Traits, _Allocator>(__a); - } - - std::string generic_string() const { return __pn_; } - std::wstring generic_wstring() const { return string(); } - std::string generic_u8string() const { return __pn_; } - std::u16string generic_u16string() const { return string(); } - std::u32string generic_u32string() const { return string(); } - -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_INLINE_VISIBILITY int compare(const path& __p) const noexcept { - return __compare(__p.__pn_); - } - _LIBCPP_INLINE_VISIBILITY int compare(const string_type& __s) const { - return __compare(__s); - } - _LIBCPP_INLINE_VISIBILITY int compare(__string_view __s) const { - return __compare(__s); - } - _LIBCPP_INLINE_VISIBILITY int compare(const value_type* __s) const { - return __compare(__s); - } - - // decomposition - _LIBCPP_INLINE_VISIBILITY path root_name() const { - return string_type(__root_name()); - } - _LIBCPP_INLINE_VISIBILITY path root_directory() const { - return string_type(__root_directory()); - } - _LIBCPP_INLINE_VISIBILITY path root_path() const { - return root_name().append(string_type(__root_directory())); - } - _LIBCPP_INLINE_VISIBILITY path relative_path() const { - return string_type(__relative_path()); - } - _LIBCPP_INLINE_VISIBILITY path parent_path() const { - return string_type(__parent_path()); - } - _LIBCPP_INLINE_VISIBILITY path filename() const { - return string_type(__filename()); - } - _LIBCPP_INLINE_VISIBILITY path stem() const { return string_type(__stem()); } - _LIBCPP_INLINE_VISIBILITY path extension() const { - return string_type(__extension()); - } - - // query - _LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_INLINE_VISIBILITY bool - empty() const noexcept { - return __pn_.empty(); - } - - _LIBCPP_INLINE_VISIBILITY bool has_root_name() const { - return !__root_name().empty(); - } - _LIBCPP_INLINE_VISIBILITY bool has_root_directory() const { - return !__root_directory().empty(); - } - _LIBCPP_INLINE_VISIBILITY bool has_root_path() const { - return !__root_path_raw().empty(); - } - _LIBCPP_INLINE_VISIBILITY bool has_relative_path() const { - return !__relative_path().empty(); - } - _LIBCPP_INLINE_VISIBILITY bool has_parent_path() const { - return !__parent_path().empty(); - } - _LIBCPP_INLINE_VISIBILITY bool has_filename() const { - return !__filename().empty(); - } - _LIBCPP_INLINE_VISIBILITY bool has_stem() const { return !__stem().empty(); } - _LIBCPP_INLINE_VISIBILITY bool has_extension() const { - return !__extension().empty(); - } - - _LIBCPP_INLINE_VISIBILITY bool is_absolute() const { - return has_root_directory(); - } - _LIBCPP_INLINE_VISIBILITY bool is_relative() const { return !is_absolute(); } - - // relative paths - path lexically_normal() const; - path lexically_relative(const path& __base) const; - - _LIBCPP_INLINE_VISIBILITY path lexically_proximate(const path& __base) const { - path __result = this->lexically_relative(__base); - if (__result.native().empty()) - return *this; - return __result; - } - - // iterators - class _LIBCPP_TYPE_VIS iterator; - typedef iterator const_iterator; - - iterator begin() const; - iterator end() const; - - template - _LIBCPP_INLINE_VISIBILITY friend - typename enable_if::value && - is_same<_Traits, char_traits >::value, - basic_ostream<_CharT, _Traits>&>::type - operator<<(basic_ostream<_CharT, _Traits>& __os, const path& __p) { - __os << std::__quoted(__p.native()); - return __os; - } - - template - _LIBCPP_INLINE_VISIBILITY friend - typename enable_if::value || - !is_same<_Traits, char_traits >::value, - basic_ostream<_CharT, _Traits>&>::type - operator<<(basic_ostream<_CharT, _Traits>& __os, const path& __p) { - __os << std::__quoted(__p.string<_CharT, _Traits>()); - return __os; - } - - template - _LIBCPP_INLINE_VISIBILITY friend basic_istream<_CharT, _Traits>& - operator>>(basic_istream<_CharT, _Traits>& __is, path& __p) { - basic_string<_CharT, _Traits> __tmp; - __is >> __quoted(__tmp); - __p = __tmp; - return __is; - } - - friend _LIBCPP_INLINE_VISIBILITY bool operator==(const path& __lhs, const path& __rhs) noexcept { - return __lhs.compare(__rhs) == 0; - } - friend _LIBCPP_INLINE_VISIBILITY bool operator!=(const path& __lhs, const path& __rhs) noexcept { - return __lhs.compare(__rhs) != 0; - } - friend _LIBCPP_INLINE_VISIBILITY bool operator<(const path& __lhs, const path& __rhs) noexcept { - return __lhs.compare(__rhs) < 0; - } - friend _LIBCPP_INLINE_VISIBILITY bool operator<=(const path& __lhs, const path& __rhs) noexcept { - return __lhs.compare(__rhs) <= 0; - } - friend _LIBCPP_INLINE_VISIBILITY bool operator>(const path& __lhs, const path& __rhs) noexcept { - return __lhs.compare(__rhs) > 0; - } - friend _LIBCPP_INLINE_VISIBILITY bool operator>=(const path& __lhs, const path& __rhs) noexcept { - return __lhs.compare(__rhs) >= 0; - } - - friend _LIBCPP_INLINE_VISIBILITY path operator/(const path& __lhs, - const path& __rhs) { - path __result(__lhs); - __result /= __rhs; - return __result; - } -private: - inline _LIBCPP_INLINE_VISIBILITY path& - __assign_view(__string_view const& __s) noexcept { - __pn_ = string_type(__s); - return *this; - } - string_type __pn_; -}; - -inline _LIBCPP_INLINE_VISIBILITY void swap(path& __lhs, path& __rhs) noexcept { - __lhs.swap(__rhs); -} - -_LIBCPP_FUNC_VIS -size_t hash_value(const path& __p) noexcept; - -template -_LIBCPP_INLINE_VISIBILITY - typename enable_if<__is_pathable<_Source>::value, path>::type - u8path(const _Source& __s) { - static_assert( - is_same::__char_type, char>::value, - "u8path(Source const&) requires Source have a character type of type " - "'char'"); - return path(__s); -} - -template -_LIBCPP_INLINE_VISIBILITY - typename enable_if<__is_pathable<_InputIt>::value, path>::type - u8path(_InputIt __f, _InputIt __l) { - static_assert( - is_same::__char_type, char>::value, - "u8path(Iter, Iter) requires Iter have a value_type of type 'char'"); - return path(__f, __l); -} - -class _LIBCPP_TYPE_VIS path::iterator { -public: - enum _ParserState : unsigned char { - _Singular, - _BeforeBegin, - _InRootName, - _InRootDir, - _InFilenames, - _InTrailingSep, - _AtEnd - }; - -public: - typedef bidirectional_iterator_tag iterator_category; - - typedef path value_type; - typedef std::ptrdiff_t difference_type; - typedef const path* pointer; - typedef const path& reference; - - typedef void - __stashing_iterator_tag; // See reverse_iterator and __is_stashing_iterator - -public: - _LIBCPP_INLINE_VISIBILITY - iterator() - : __stashed_elem_(), __path_ptr_(nullptr), __entry_(), - __state_(_Singular) {} - - iterator(const iterator&) = default; - ~iterator() = default; - - iterator& operator=(const iterator&) = default; - - _LIBCPP_INLINE_VISIBILITY - reference operator*() const { return __stashed_elem_; } - - _LIBCPP_INLINE_VISIBILITY - pointer operator->() const { return &__stashed_elem_; } - - _LIBCPP_INLINE_VISIBILITY - iterator& operator++() { - _LIBCPP_ASSERT(__state_ != _Singular, - "attempting to increment a singular iterator"); - _LIBCPP_ASSERT(__state_ != _AtEnd, - "attempting to increment the end iterator"); - return __increment(); - } - - _LIBCPP_INLINE_VISIBILITY - iterator operator++(int) { - iterator __it(*this); - this->operator++(); - return __it; - } - - _LIBCPP_INLINE_VISIBILITY - iterator& operator--() { - _LIBCPP_ASSERT(__state_ != _Singular, - "attempting to decrement a singular iterator"); - _LIBCPP_ASSERT(__entry_.data() != __path_ptr_->native().data(), - "attempting to decrement the begin iterator"); - return __decrement(); - } - - _LIBCPP_INLINE_VISIBILITY - iterator operator--(int) { - iterator __it(*this); - this->operator--(); - return __it; - } - -private: - friend class path; - - inline _LIBCPP_INLINE_VISIBILITY friend bool operator==(const iterator&, - const iterator&); - - iterator& __increment(); - iterator& __decrement(); - - path __stashed_elem_; - const path* __path_ptr_; - path::__string_view __entry_; - _ParserState __state_; -}; - -inline _LIBCPP_INLINE_VISIBILITY bool operator==(const path::iterator& __lhs, - const path::iterator& __rhs) { - return __lhs.__path_ptr_ == __rhs.__path_ptr_ && - __lhs.__entry_.data() == __rhs.__entry_.data(); -} - -inline _LIBCPP_INLINE_VISIBILITY bool operator!=(const path::iterator& __lhs, - const path::iterator& __rhs) { - return !(__lhs == __rhs); -} - -class _LIBCPP_EXCEPTION_ABI filesystem_error : public system_error { -public: - _LIBCPP_INLINE_VISIBILITY - filesystem_error(const string& __what, error_code __ec) - : system_error(__ec, __what), - __storage_(make_shared<_Storage>(path(), path())) { - __create_what(0); - } - - _LIBCPP_INLINE_VISIBILITY - filesystem_error(const string& __what, const path& __p1, error_code __ec) - : system_error(__ec, __what), - __storage_(make_shared<_Storage>(__p1, path())) { - __create_what(1); - } - - _LIBCPP_INLINE_VISIBILITY - filesystem_error(const string& __what, const path& __p1, const path& __p2, - error_code __ec) - : system_error(__ec, __what), - __storage_(make_shared<_Storage>(__p1, __p2)) { - __create_what(2); - } - - _LIBCPP_INLINE_VISIBILITY - const path& path1() const noexcept { return __storage_->__p1_; } - - _LIBCPP_INLINE_VISIBILITY - const path& path2() const noexcept { return __storage_->__p2_; } - - ~filesystem_error() override; // key function - - _LIBCPP_INLINE_VISIBILITY - const char* what() const noexcept override { - return __storage_->__what_.c_str(); - } - - _LIBCPP_FUNC_VIS - void __create_what(int __num_paths); - -private: - struct _Storage { - _LIBCPP_INLINE_VISIBILITY - _Storage(const path& __p1, const path& __p2) : __p1_(__p1), __p2_(__p2) {} - - path __p1_; - path __p2_; - string __what_; - }; - shared_ptr<_Storage> __storage_; -}; - -template -_LIBCPP_NORETURN inline _LIBCPP_INLINE_VISIBILITY -#ifndef _LIBCPP_NO_EXCEPTIONS - void - __throw_filesystem_error(_Args&&... __args) { - throw filesystem_error(std::forward<_Args>(__args)...); -} -#else - void - __throw_filesystem_error(_Args&&...) { - _VSTD::abort(); -} -#endif - -// operational functions - -_LIBCPP_FUNC_VIS -path __absolute(const path&, error_code* __ec = nullptr); -_LIBCPP_FUNC_VIS -path __canonical(const path&, error_code* __ec = nullptr); -_LIBCPP_FUNC_VIS -void __copy(const path& __from, const path& __to, copy_options __opt, - error_code* __ec = nullptr); -_LIBCPP_FUNC_VIS -bool __copy_file(const path& __from, const path& __to, copy_options __opt, - error_code* __ec = nullptr); -_LIBCPP_FUNC_VIS -void __copy_symlink(const path& __existing_symlink, const path& __new_symlink, - error_code* __ec = nullptr); -_LIBCPP_FUNC_VIS -bool __create_directories(const path& p, error_code* ec = nullptr); -_LIBCPP_FUNC_VIS -bool __create_directory(const path& p, error_code* ec = nullptr); -_LIBCPP_FUNC_VIS -bool __create_directory(const path& p, const path& attributes, - error_code* ec = nullptr); -_LIBCPP_FUNC_VIS -void __create_directory_symlink(const path& __to, const path& __new_symlink, - error_code* __ec = nullptr); -_LIBCPP_FUNC_VIS -void __create_hard_link(const path& __to, const path& __new_hard_link, - error_code* __ec = nullptr); -_LIBCPP_FUNC_VIS -void __create_symlink(const path& __to, const path& __new_symlink, - error_code* __ec = nullptr); -_LIBCPP_FUNC_VIS -path __current_path(error_code* __ec = nullptr); -_LIBCPP_FUNC_VIS -void __current_path(const path&, error_code* __ec = nullptr); -_LIBCPP_FUNC_VIS -bool __equivalent(const path&, const path&, error_code* __ec = nullptr); -_LIBCPP_FUNC_VIS -uintmax_t __file_size(const path&, error_code* __ec = nullptr); -_LIBCPP_FUNC_VIS -uintmax_t __hard_link_count(const path&, error_code* __ec = nullptr); -_LIBCPP_FUNC_VIS -bool __fs_is_empty(const path& p, error_code* ec = nullptr); -_LIBCPP_FUNC_VIS -file_time_type __last_write_time(const path& p, error_code* ec = nullptr); -_LIBCPP_FUNC_VIS -void __last_write_time(const path& p, file_time_type new_time, - error_code* ec = nullptr); -_LIBCPP_FUNC_VIS -void __permissions(const path&, perms, perm_options, error_code* = nullptr); -_LIBCPP_FUNC_VIS -path __read_symlink(const path& p, error_code* ec = nullptr); -_LIBCPP_FUNC_VIS -bool __remove(const path& p, error_code* ec = nullptr); -_LIBCPP_FUNC_VIS -uintmax_t __remove_all(const path& p, error_code* ec = nullptr); -_LIBCPP_FUNC_VIS -void __rename(const path& from, const path& to, error_code* ec = nullptr); -_LIBCPP_FUNC_VIS -void __resize_file(const path& p, uintmax_t size, error_code* ec = nullptr); -_LIBCPP_FUNC_VIS -space_info __space(const path&, error_code* __ec = nullptr); -_LIBCPP_FUNC_VIS -file_status __status(const path&, error_code* __ec = nullptr); -_LIBCPP_FUNC_VIS -file_status __symlink_status(const path&, error_code* __ec = nullptr); -_LIBCPP_FUNC_VIS -path __system_complete(const path&, error_code* __ec = nullptr); -_LIBCPP_FUNC_VIS -path __temp_directory_path(error_code* __ec = nullptr); -_LIBCPP_FUNC_VIS -path __weakly_canonical(path const& __p, error_code* __ec = nullptr); - -inline _LIBCPP_INLINE_VISIBILITY path current_path() { - return __current_path(); -} - -inline _LIBCPP_INLINE_VISIBILITY path current_path(error_code& __ec) { - return __current_path(&__ec); -} - -inline _LIBCPP_INLINE_VISIBILITY void current_path(const path& __p) { - __current_path(__p); -} - -inline _LIBCPP_INLINE_VISIBILITY void current_path(const path& __p, - error_code& __ec) noexcept { - __current_path(__p, &__ec); -} - -inline _LIBCPP_INLINE_VISIBILITY path absolute(const path& __p) { - return __absolute(__p); -} - -inline _LIBCPP_INLINE_VISIBILITY path absolute(const path& __p, - error_code& __ec) { - return __absolute(__p, &__ec); -} - -inline _LIBCPP_INLINE_VISIBILITY path canonical(const path& __p) { - return __canonical(__p); -} - -inline _LIBCPP_INLINE_VISIBILITY path canonical(const path& __p, - error_code& __ec) { - return __canonical(__p, &__ec); -} - -inline _LIBCPP_INLINE_VISIBILITY void copy(const path& __from, - const path& __to) { - __copy(__from, __to, copy_options::none); -} - -inline _LIBCPP_INLINE_VISIBILITY void copy(const path& __from, const path& __to, - error_code& __ec) { - __copy(__from, __to, copy_options::none, &__ec); -} - -inline _LIBCPP_INLINE_VISIBILITY void copy(const path& __from, const path& __to, - copy_options __opt) { - __copy(__from, __to, __opt); -} - -inline _LIBCPP_INLINE_VISIBILITY void copy(const path& __from, const path& __to, - copy_options __opt, - error_code& __ec) { - __copy(__from, __to, __opt, &__ec); -} - -inline _LIBCPP_INLINE_VISIBILITY bool copy_file(const path& __from, - const path& __to) { - return __copy_file(__from, __to, copy_options::none); -} - -inline _LIBCPP_INLINE_VISIBILITY bool -copy_file(const path& __from, const path& __to, error_code& __ec) { - return __copy_file(__from, __to, copy_options::none, &__ec); -} - -inline _LIBCPP_INLINE_VISIBILITY bool -copy_file(const path& __from, const path& __to, copy_options __opt) { - return __copy_file(__from, __to, __opt); -} - -inline _LIBCPP_INLINE_VISIBILITY bool copy_file(const path& __from, - const path& __to, - copy_options __opt, - error_code& __ec) { - return __copy_file(__from, __to, __opt, &__ec); -} - -inline _LIBCPP_INLINE_VISIBILITY void copy_symlink(const path& __existing, - const path& __new) { - __copy_symlink(__existing, __new); -} - -inline _LIBCPP_INLINE_VISIBILITY void -copy_symlink(const path& __ext, const path& __new, error_code& __ec) noexcept { - __copy_symlink(__ext, __new, &__ec); -} - -inline _LIBCPP_INLINE_VISIBILITY bool create_directories(const path& __p) { - return __create_directories(__p); -} - -inline _LIBCPP_INLINE_VISIBILITY bool create_directories(const path& __p, - error_code& __ec) { - return __create_directories(__p, &__ec); -} - -inline _LIBCPP_INLINE_VISIBILITY bool create_directory(const path& __p) { - return __create_directory(__p); -} - -inline _LIBCPP_INLINE_VISIBILITY bool -create_directory(const path& __p, error_code& __ec) noexcept { - return __create_directory(__p, &__ec); -} - -inline _LIBCPP_INLINE_VISIBILITY bool create_directory(const path& __p, - const path& __attrs) { - return __create_directory(__p, __attrs); -} - -inline _LIBCPP_INLINE_VISIBILITY bool -create_directory(const path& __p, const path& __attrs, - error_code& __ec) noexcept { - return __create_directory(__p, __attrs, &__ec); -} - -inline _LIBCPP_INLINE_VISIBILITY void -create_directory_symlink(const path& __to, const path& __new) { - __create_directory_symlink(__to, __new); -} - -inline _LIBCPP_INLINE_VISIBILITY void -create_directory_symlink(const path& __to, const path& __new, - error_code& __ec) noexcept { - __create_directory_symlink(__to, __new, &__ec); -} - -inline _LIBCPP_INLINE_VISIBILITY void create_hard_link(const path& __to, - const path& __new) { - __create_hard_link(__to, __new); -} - -inline _LIBCPP_INLINE_VISIBILITY void -create_hard_link(const path& __to, const path& __new, - error_code& __ec) noexcept { - __create_hard_link(__to, __new, &__ec); -} - -inline _LIBCPP_INLINE_VISIBILITY void create_symlink(const path& __to, - const path& __new) { - __create_symlink(__to, __new); -} - -inline _LIBCPP_INLINE_VISIBILITY void -create_symlink(const path& __to, const path& __new, error_code& __ec) noexcept { - return __create_symlink(__to, __new, &__ec); -} - -inline _LIBCPP_INLINE_VISIBILITY bool status_known(file_status __s) noexcept { - return __s.type() != file_type::none; -} - -inline _LIBCPP_INLINE_VISIBILITY bool exists(file_status __s) noexcept { - return status_known(__s) && __s.type() != file_type::not_found; -} - -inline _LIBCPP_INLINE_VISIBILITY bool exists(const path& __p) { - return exists(__status(__p)); -} - -inline _LIBCPP_INLINE_VISIBILITY bool exists(const path& __p, - error_code& __ec) noexcept { - auto __s = __status(__p, &__ec); - if (status_known(__s)) - __ec.clear(); - return exists(__s); -} - -inline _LIBCPP_INLINE_VISIBILITY bool equivalent(const path& __p1, - const path& __p2) { - return __equivalent(__p1, __p2); -} - -inline _LIBCPP_INLINE_VISIBILITY bool -equivalent(const path& __p1, const path& __p2, error_code& __ec) noexcept { - return __equivalent(__p1, __p2, &__ec); -} - -inline _LIBCPP_INLINE_VISIBILITY uintmax_t file_size(const path& __p) { - return __file_size(__p); -} - -inline _LIBCPP_INLINE_VISIBILITY uintmax_t -file_size(const path& __p, error_code& __ec) noexcept { - return __file_size(__p, &__ec); -} - -inline _LIBCPP_INLINE_VISIBILITY uintmax_t hard_link_count(const path& __p) { - return __hard_link_count(__p); -} - -inline _LIBCPP_INLINE_VISIBILITY uintmax_t -hard_link_count(const path& __p, error_code& __ec) noexcept { - return __hard_link_count(__p, &__ec); -} - -inline _LIBCPP_INLINE_VISIBILITY bool is_block_file(file_status __s) noexcept { - return __s.type() == file_type::block; -} - -inline _LIBCPP_INLINE_VISIBILITY bool is_block_file(const path& __p) { - return is_block_file(__status(__p)); -} - -inline _LIBCPP_INLINE_VISIBILITY bool is_block_file(const path& __p, - error_code& __ec) noexcept { - return is_block_file(__status(__p, &__ec)); -} - -inline _LIBCPP_INLINE_VISIBILITY bool -is_character_file(file_status __s) noexcept { - return __s.type() == file_type::character; -} - -inline _LIBCPP_INLINE_VISIBILITY bool is_character_file(const path& __p) { - return is_character_file(__status(__p)); -} - -inline _LIBCPP_INLINE_VISIBILITY bool -is_character_file(const path& __p, error_code& __ec) noexcept { - return is_character_file(__status(__p, &__ec)); -} - -inline _LIBCPP_INLINE_VISIBILITY bool is_directory(file_status __s) noexcept { - return __s.type() == file_type::directory; -} - -inline _LIBCPP_INLINE_VISIBILITY bool is_directory(const path& __p) { - return is_directory(__status(__p)); -} - -inline _LIBCPP_INLINE_VISIBILITY bool is_directory(const path& __p, - error_code& __ec) noexcept { - return is_directory(__status(__p, &__ec)); -} - -inline _LIBCPP_INLINE_VISIBILITY bool is_empty(const path& __p) { - return __fs_is_empty(__p); -} - -inline _LIBCPP_INLINE_VISIBILITY bool is_empty(const path& __p, - error_code& __ec) { - return __fs_is_empty(__p, &__ec); -} - -inline _LIBCPP_INLINE_VISIBILITY bool is_fifo(file_status __s) noexcept { - return __s.type() == file_type::fifo; -} -inline _LIBCPP_INLINE_VISIBILITY bool is_fifo(const path& __p) { - return is_fifo(__status(__p)); -} - -inline _LIBCPP_INLINE_VISIBILITY bool is_fifo(const path& __p, - error_code& __ec) noexcept { - return is_fifo(__status(__p, &__ec)); -} - -inline _LIBCPP_INLINE_VISIBILITY bool -is_regular_file(file_status __s) noexcept { - return __s.type() == file_type::regular; -} - -inline _LIBCPP_INLINE_VISIBILITY bool is_regular_file(const path& __p) { - return is_regular_file(__status(__p)); -} - -inline _LIBCPP_INLINE_VISIBILITY bool -is_regular_file(const path& __p, error_code& __ec) noexcept { - return is_regular_file(__status(__p, &__ec)); -} - -inline _LIBCPP_INLINE_VISIBILITY bool is_socket(file_status __s) noexcept { - return __s.type() == file_type::socket; -} - -inline _LIBCPP_INLINE_VISIBILITY bool is_socket(const path& __p) { - return is_socket(__status(__p)); -} - -inline _LIBCPP_INLINE_VISIBILITY bool is_socket(const path& __p, - error_code& __ec) noexcept { - return is_socket(__status(__p, &__ec)); -} - -inline _LIBCPP_INLINE_VISIBILITY bool is_symlink(file_status __s) noexcept { - return __s.type() == file_type::symlink; -} - -inline _LIBCPP_INLINE_VISIBILITY bool is_symlink(const path& __p) { - return is_symlink(__symlink_status(__p)); -} - -inline _LIBCPP_INLINE_VISIBILITY bool is_symlink(const path& __p, - error_code& __ec) noexcept { - return is_symlink(__symlink_status(__p, &__ec)); -} - -inline _LIBCPP_INLINE_VISIBILITY bool is_other(file_status __s) noexcept { - return exists(__s) && !is_regular_file(__s) && !is_directory(__s) && - !is_symlink(__s); -} - -inline _LIBCPP_INLINE_VISIBILITY bool is_other(const path& __p) { - return is_other(__status(__p)); -} - -inline _LIBCPP_INLINE_VISIBILITY bool is_other(const path& __p, - error_code& __ec) noexcept { - return is_other(__status(__p, &__ec)); -} - -inline _LIBCPP_INLINE_VISIBILITY file_time_type -last_write_time(const path& __p) { - return __last_write_time(__p); -} - -inline _LIBCPP_INLINE_VISIBILITY file_time_type -last_write_time(const path& __p, error_code& __ec) noexcept { - return __last_write_time(__p, &__ec); -} - -inline _LIBCPP_INLINE_VISIBILITY void last_write_time(const path& __p, - file_time_type __t) { - __last_write_time(__p, __t); -} - -inline _LIBCPP_INLINE_VISIBILITY void -last_write_time(const path& __p, file_time_type __t, - error_code& __ec) noexcept { - __last_write_time(__p, __t, &__ec); -} - -inline _LIBCPP_INLINE_VISIBILITY void -permissions(const path& __p, perms __prms, - perm_options __opts = perm_options::replace) { - __permissions(__p, __prms, __opts); -} - -inline _LIBCPP_INLINE_VISIBILITY void permissions(const path& __p, perms __prms, - error_code& __ec) noexcept { - __permissions(__p, __prms, perm_options::replace, &__ec); -} - -inline _LIBCPP_INLINE_VISIBILITY void permissions(const path& __p, perms __prms, - perm_options __opts, - error_code& __ec) { - __permissions(__p, __prms, __opts, &__ec); -} - -inline _LIBCPP_INLINE_VISIBILITY path proximate(const path& __p, - const path& __base, - error_code& __ec) { - path __tmp = __weakly_canonical(__p, &__ec); - if (__ec) - return {}; - path __tmp_base = __weakly_canonical(__base, &__ec); - if (__ec) - return {}; - return __tmp.lexically_proximate(__tmp_base); -} - -inline _LIBCPP_INLINE_VISIBILITY path proximate(const path& __p, - error_code& __ec) { - return proximate(__p, current_path(), __ec); -} - -inline _LIBCPP_INLINE_VISIBILITY path -proximate(const path& __p, const path& __base = current_path()) { - return __weakly_canonical(__p).lexically_proximate( - __weakly_canonical(__base)); -} - -inline _LIBCPP_INLINE_VISIBILITY path read_symlink(const path& __p) { - return __read_symlink(__p); -} - -inline _LIBCPP_INLINE_VISIBILITY path read_symlink(const path& __p, - error_code& __ec) { - return __read_symlink(__p, &__ec); -} - -inline _LIBCPP_INLINE_VISIBILITY path relative(const path& __p, - const path& __base, - error_code& __ec) { - path __tmp = __weakly_canonical(__p, &__ec); - if (__ec) - return path(); - path __tmpbase = __weakly_canonical(__base, &__ec); - if (__ec) - return path(); - return __tmp.lexically_relative(__tmpbase); -} - -inline _LIBCPP_INLINE_VISIBILITY path relative(const path& __p, - error_code& __ec) { - return relative(__p, current_path(), __ec); -} - -inline _LIBCPP_INLINE_VISIBILITY path -relative(const path& __p, const path& __base = current_path()) { - return __weakly_canonical(__p).lexically_relative(__weakly_canonical(__base)); -} - -inline _LIBCPP_INLINE_VISIBILITY bool remove(const path& __p) { - return __remove(__p); -} - -inline _LIBCPP_INLINE_VISIBILITY bool remove(const path& __p, - error_code& __ec) noexcept { - return __remove(__p, &__ec); -} - -inline _LIBCPP_INLINE_VISIBILITY uintmax_t remove_all(const path& __p) { - return __remove_all(__p); -} - -inline _LIBCPP_INLINE_VISIBILITY uintmax_t remove_all(const path& __p, - error_code& __ec) { - return __remove_all(__p, &__ec); -} - -inline _LIBCPP_INLINE_VISIBILITY void rename(const path& __from, - const path& __to) { - return __rename(__from, __to); -} - -inline _LIBCPP_INLINE_VISIBILITY void -rename(const path& __from, const path& __to, error_code& __ec) noexcept { - return __rename(__from, __to, &__ec); -} - -inline _LIBCPP_INLINE_VISIBILITY void resize_file(const path& __p, - uintmax_t __ns) { - return __resize_file(__p, __ns); -} - -inline _LIBCPP_INLINE_VISIBILITY void -resize_file(const path& __p, uintmax_t __ns, error_code& __ec) noexcept { - return __resize_file(__p, __ns, &__ec); -} - -inline _LIBCPP_INLINE_VISIBILITY space_info space(const path& __p) { - return __space(__p); -} - -inline _LIBCPP_INLINE_VISIBILITY space_info space(const path& __p, - error_code& __ec) noexcept { - return __space(__p, &__ec); -} - -inline _LIBCPP_INLINE_VISIBILITY file_status status(const path& __p) { - return __status(__p); -} - -inline _LIBCPP_INLINE_VISIBILITY file_status status(const path& __p, - error_code& __ec) noexcept { - return __status(__p, &__ec); -} - -inline _LIBCPP_INLINE_VISIBILITY file_status symlink_status(const path& __p) { - return __symlink_status(__p); -} - -inline _LIBCPP_INLINE_VISIBILITY file_status -symlink_status(const path& __p, error_code& __ec) noexcept { - return __symlink_status(__p, &__ec); -} - -inline _LIBCPP_INLINE_VISIBILITY path temp_directory_path() { - return __temp_directory_path(); -} - -inline _LIBCPP_INLINE_VISIBILITY path temp_directory_path(error_code& __ec) { - return __temp_directory_path(&__ec); -} - -inline _LIBCPP_INLINE_VISIBILITY path weakly_canonical(path const& __p) { - return __weakly_canonical(__p); -} - -inline _LIBCPP_INLINE_VISIBILITY path weakly_canonical(path const& __p, - error_code& __ec) { - return __weakly_canonical(__p, &__ec); -} - -class directory_iterator; -class recursive_directory_iterator; -class __dir_stream; - -class directory_entry { - typedef _VSTD_FS::path _Path; - -public: - // constructors and destructors - directory_entry() noexcept = default; - directory_entry(directory_entry const&) = default; - directory_entry(directory_entry&&) noexcept = default; - - _LIBCPP_INLINE_VISIBILITY - explicit directory_entry(_Path const& __p) : __p_(__p) { - error_code __ec; - __refresh(&__ec); - } - - _LIBCPP_INLINE_VISIBILITY - directory_entry(_Path const& __p, error_code& __ec) : __p_(__p) { - __refresh(&__ec); - } - - ~directory_entry() {} - - directory_entry& operator=(directory_entry const&) = default; - directory_entry& operator=(directory_entry&&) noexcept = default; - - _LIBCPP_INLINE_VISIBILITY - void assign(_Path const& __p) { - __p_ = __p; - error_code __ec; - __refresh(&__ec); - } - - _LIBCPP_INLINE_VISIBILITY - void assign(_Path const& __p, error_code& __ec) { - __p_ = __p; - __refresh(&__ec); - } - - _LIBCPP_INLINE_VISIBILITY - void replace_filename(_Path const& __p) { - __p_.replace_filename(__p); - error_code __ec; - __refresh(&__ec); - } - - _LIBCPP_INLINE_VISIBILITY - void replace_filename(_Path const& __p, error_code& __ec) { - __p_ = __p_.parent_path() / __p; - __refresh(&__ec); - } - - _LIBCPP_INLINE_VISIBILITY - void refresh() { __refresh(); } - - _LIBCPP_INLINE_VISIBILITY - void refresh(error_code& __ec) noexcept { __refresh(&__ec); } - - _LIBCPP_INLINE_VISIBILITY - _Path const& path() const noexcept { return __p_; } - - _LIBCPP_INLINE_VISIBILITY - operator const _Path&() const noexcept { return __p_; } - - _LIBCPP_INLINE_VISIBILITY - bool exists() const { return _VSTD_FS::exists(file_status{__get_ft()}); } - - _LIBCPP_INLINE_VISIBILITY - bool exists(error_code& __ec) const noexcept { - return _VSTD_FS::exists(file_status{__get_ft(&__ec)}); - } - - _LIBCPP_INLINE_VISIBILITY - bool is_block_file() const { return __get_ft() == file_type::block; } - - _LIBCPP_INLINE_VISIBILITY - bool is_block_file(error_code& __ec) const noexcept { - return __get_ft(&__ec) == file_type::block; - } - - _LIBCPP_INLINE_VISIBILITY - bool is_character_file() const { return __get_ft() == file_type::character; } - - _LIBCPP_INLINE_VISIBILITY - bool is_character_file(error_code& __ec) const noexcept { - return __get_ft(&__ec) == file_type::character; - } - - _LIBCPP_INLINE_VISIBILITY - bool is_directory() const { return __get_ft() == file_type::directory; } - - _LIBCPP_INLINE_VISIBILITY - bool is_directory(error_code& __ec) const noexcept { - return __get_ft(&__ec) == file_type::directory; - } - - _LIBCPP_INLINE_VISIBILITY - bool is_fifo() const { return __get_ft() == file_type::fifo; } - - _LIBCPP_INLINE_VISIBILITY - bool is_fifo(error_code& __ec) const noexcept { - return __get_ft(&__ec) == file_type::fifo; - } - - _LIBCPP_INLINE_VISIBILITY - bool is_other() const { return _VSTD_FS::is_other(file_status{__get_ft()}); } - - _LIBCPP_INLINE_VISIBILITY - bool is_other(error_code& __ec) const noexcept { - return _VSTD_FS::is_other(file_status{__get_ft(&__ec)}); - } - - _LIBCPP_INLINE_VISIBILITY - bool is_regular_file() const { return __get_ft() == file_type::regular; } - - _LIBCPP_INLINE_VISIBILITY - bool is_regular_file(error_code& __ec) const noexcept { - return __get_ft(&__ec) == file_type::regular; - } - - _LIBCPP_INLINE_VISIBILITY - bool is_socket() const { return __get_ft() == file_type::socket; } - - _LIBCPP_INLINE_VISIBILITY - bool is_socket(error_code& __ec) const noexcept { - return __get_ft(&__ec) == file_type::socket; - } - - _LIBCPP_INLINE_VISIBILITY - bool is_symlink() const { return __get_sym_ft() == file_type::symlink; } - - _LIBCPP_INLINE_VISIBILITY - bool is_symlink(error_code& __ec) const noexcept { - return __get_sym_ft(&__ec) == file_type::symlink; - } - _LIBCPP_INLINE_VISIBILITY - uintmax_t file_size() const { return __get_size(); } - - _LIBCPP_INLINE_VISIBILITY - uintmax_t file_size(error_code& __ec) const noexcept { - return __get_size(&__ec); - } - - _LIBCPP_INLINE_VISIBILITY - uintmax_t hard_link_count() const { return __get_nlink(); } - - _LIBCPP_INLINE_VISIBILITY - uintmax_t hard_link_count(error_code& __ec) const noexcept { - return __get_nlink(&__ec); - } - - _LIBCPP_INLINE_VISIBILITY - file_time_type last_write_time() const { return __get_write_time(); } - - _LIBCPP_INLINE_VISIBILITY - file_time_type last_write_time(error_code& __ec) const noexcept { - return __get_write_time(&__ec); - } - - _LIBCPP_INLINE_VISIBILITY - file_status status() const { return __get_status(); } - - _LIBCPP_INLINE_VISIBILITY - file_status status(error_code& __ec) const noexcept { - return __get_status(&__ec); - } - - _LIBCPP_INLINE_VISIBILITY - file_status symlink_status() const { return __get_symlink_status(); } - - _LIBCPP_INLINE_VISIBILITY - file_status symlink_status(error_code& __ec) const noexcept { - return __get_symlink_status(&__ec); - } - - _LIBCPP_INLINE_VISIBILITY - bool operator<(directory_entry const& __rhs) const noexcept { - return __p_ < __rhs.__p_; - } - - _LIBCPP_INLINE_VISIBILITY - bool operator==(directory_entry const& __rhs) const noexcept { - return __p_ == __rhs.__p_; - } - - _LIBCPP_INLINE_VISIBILITY - bool operator!=(directory_entry const& __rhs) const noexcept { - return __p_ != __rhs.__p_; - } - - _LIBCPP_INLINE_VISIBILITY - bool operator<=(directory_entry const& __rhs) const noexcept { - return __p_ <= __rhs.__p_; - } - - _LIBCPP_INLINE_VISIBILITY - bool operator>(directory_entry const& __rhs) const noexcept { - return __p_ > __rhs.__p_; - } - - _LIBCPP_INLINE_VISIBILITY - bool operator>=(directory_entry const& __rhs) const noexcept { - return __p_ >= __rhs.__p_; - } - -private: - friend class directory_iterator; - friend class recursive_directory_iterator; - friend class __dir_stream; - - enum _CacheType : unsigned char { - _Empty, - _IterSymlink, - _IterNonSymlink, - _RefreshSymlink, - _RefreshSymlinkUnresolved, - _RefreshNonSymlink - }; - - struct __cached_data { - uintmax_t __size_; - uintmax_t __nlink_; - file_time_type __write_time_; - perms __sym_perms_; - perms __non_sym_perms_; - file_type __type_; - _CacheType __cache_type_; - - _LIBCPP_INLINE_VISIBILITY - __cached_data() noexcept { __reset(); } - - _LIBCPP_INLINE_VISIBILITY - void __reset() { - __cache_type_ = _Empty; - __type_ = file_type::none; - __sym_perms_ = __non_sym_perms_ = perms::unknown; - __size_ = __nlink_ = uintmax_t(-1); - __write_time_ = file_time_type::min(); - } - }; - - _LIBCPP_INLINE_VISIBILITY - static __cached_data __create_iter_result(file_type __ft) { - __cached_data __data; - __data.__type_ = __ft; - __data.__cache_type_ = [&]() { - switch (__ft) { - case file_type::none: - return _Empty; - case file_type::symlink: - return _IterSymlink; - default: - return _IterNonSymlink; - } - }(); - return __data; - } - - _LIBCPP_INLINE_VISIBILITY - void __assign_iter_entry(_Path&& __p, __cached_data __dt) { - __p_ = std::move(__p); - __data_ = __dt; - } - - _LIBCPP_FUNC_VIS - error_code __do_refresh() noexcept; - - _LIBCPP_INLINE_VISIBILITY - static bool __is_dne_error(error_code const& __ec) { - if (!__ec) - return true; - switch (static_cast(__ec.value())) { - case errc::no_such_file_or_directory: - case errc::not_a_directory: - return true; - default: - return false; - } - } - - _LIBCPP_INLINE_VISIBILITY - void __handle_error(const char* __msg, error_code* __dest_ec, - error_code const& __ec, bool __allow_dne = false) const { - if (__dest_ec) { - *__dest_ec = __ec; - return; - } - if (__ec && (!__allow_dne || !__is_dne_error(__ec))) - __throw_filesystem_error(__msg, __p_, __ec); - } - - _LIBCPP_INLINE_VISIBILITY - void __refresh(error_code* __ec = nullptr) { - __handle_error("in directory_entry::refresh", __ec, __do_refresh(), - /*allow_dne*/ true); - } - - _LIBCPP_INLINE_VISIBILITY - file_type __get_sym_ft(error_code* __ec = nullptr) const { - switch (__data_.__cache_type_) { - case _Empty: - return __symlink_status(__p_, __ec).type(); - case _IterSymlink: - case _RefreshSymlink: - case _RefreshSymlinkUnresolved: - if (__ec) - __ec->clear(); - return file_type::symlink; - case _IterNonSymlink: - case _RefreshNonSymlink: - file_status __st(__data_.__type_); - if (__ec && !_VSTD_FS::exists(__st)) - *__ec = make_error_code(errc::no_such_file_or_directory); - else if (__ec) - __ec->clear(); - return __data_.__type_; - } - _LIBCPP_UNREACHABLE(); - } - - _LIBCPP_INLINE_VISIBILITY - file_type __get_ft(error_code* __ec = nullptr) const { - switch (__data_.__cache_type_) { - case _Empty: - case _IterSymlink: - case _RefreshSymlinkUnresolved: - return __status(__p_, __ec).type(); - case _IterNonSymlink: - case _RefreshNonSymlink: - case _RefreshSymlink: { - file_status __st(__data_.__type_); - if (__ec && !_VSTD_FS::exists(__st)) - *__ec = make_error_code(errc::no_such_file_or_directory); - else if (__ec) - __ec->clear(); - return __data_.__type_; - } - } - _LIBCPP_UNREACHABLE(); - } - - _LIBCPP_INLINE_VISIBILITY - file_status __get_status(error_code* __ec = nullptr) const { - switch (__data_.__cache_type_) { - case _Empty: - case _IterNonSymlink: - case _IterSymlink: - case _RefreshSymlinkUnresolved: - return __status(__p_, __ec); - case _RefreshNonSymlink: - case _RefreshSymlink: - return file_status(__get_ft(__ec), __data_.__non_sym_perms_); - } - _LIBCPP_UNREACHABLE(); - } - - _LIBCPP_INLINE_VISIBILITY - file_status __get_symlink_status(error_code* __ec = nullptr) const { - switch (__data_.__cache_type_) { - case _Empty: - case _IterNonSymlink: - case _IterSymlink: - return __symlink_status(__p_, __ec); - case _RefreshNonSymlink: - return file_status(__get_sym_ft(__ec), __data_.__non_sym_perms_); - case _RefreshSymlink: - case _RefreshSymlinkUnresolved: - return file_status(__get_sym_ft(__ec), __data_.__sym_perms_); - } - _LIBCPP_UNREACHABLE(); - } - - _LIBCPP_INLINE_VISIBILITY - uintmax_t __get_size(error_code* __ec = nullptr) const { - switch (__data_.__cache_type_) { - case _Empty: - case _IterNonSymlink: - case _IterSymlink: - case _RefreshSymlinkUnresolved: - return _VSTD_FS::__file_size(__p_, __ec); - case _RefreshSymlink: - case _RefreshNonSymlink: { - error_code __m_ec; - file_status __st(__get_ft(&__m_ec)); - __handle_error("in directory_entry::file_size", __ec, __m_ec); - if (_VSTD_FS::exists(__st) && !_VSTD_FS::is_regular_file(__st)) { - errc __err_kind = _VSTD_FS::is_directory(__st) ? errc::is_a_directory - : errc::not_supported; - __handle_error("in directory_entry::file_size", __ec, - make_error_code(__err_kind)); - } - return __data_.__size_; - } - } - _LIBCPP_UNREACHABLE(); - } - - _LIBCPP_INLINE_VISIBILITY - uintmax_t __get_nlink(error_code* __ec = nullptr) const { - switch (__data_.__cache_type_) { - case _Empty: - case _IterNonSymlink: - case _IterSymlink: - case _RefreshSymlinkUnresolved: - return _VSTD_FS::__hard_link_count(__p_, __ec); - case _RefreshSymlink: - case _RefreshNonSymlink: { - error_code __m_ec; - (void)__get_ft(&__m_ec); - __handle_error("in directory_entry::hard_link_count", __ec, __m_ec); - return __data_.__nlink_; - } - } - _LIBCPP_UNREACHABLE(); - } - - _LIBCPP_INLINE_VISIBILITY - file_time_type __get_write_time(error_code* __ec = nullptr) const { - switch (__data_.__cache_type_) { - case _Empty: - case _IterNonSymlink: - case _IterSymlink: - case _RefreshSymlinkUnresolved: - return _VSTD_FS::__last_write_time(__p_, __ec); - case _RefreshSymlink: - case _RefreshNonSymlink: { - error_code __m_ec; - file_status __st(__get_ft(&__m_ec)); - __handle_error("in directory_entry::last_write_time", __ec, __m_ec); - if (_VSTD_FS::exists(__st) && - __data_.__write_time_ == file_time_type::min()) - __handle_error("in directory_entry::last_write_time", __ec, - make_error_code(errc::value_too_large)); - return __data_.__write_time_; - } - } - _LIBCPP_UNREACHABLE(); - } - -private: - _Path __p_; - __cached_data __data_; -}; - -class __dir_element_proxy { -public: - inline _LIBCPP_INLINE_VISIBILITY directory_entry operator*() { - return _VSTD::move(__elem_); - } - -private: - friend class directory_iterator; - friend class recursive_directory_iterator; - explicit __dir_element_proxy(directory_entry const& __e) : __elem_(__e) {} - __dir_element_proxy(__dir_element_proxy&& __o) - : __elem_(_VSTD::move(__o.__elem_)) {} - directory_entry __elem_; -}; - -class directory_iterator { -public: - typedef directory_entry value_type; - typedef ptrdiff_t difference_type; - typedef value_type const* pointer; - typedef value_type const& reference; - typedef input_iterator_tag iterator_category; - -public: - //ctor & dtor - directory_iterator() noexcept {} - - explicit directory_iterator(const path& __p) - : directory_iterator(__p, nullptr) {} - - directory_iterator(const path& __p, directory_options __opts) - : directory_iterator(__p, nullptr, __opts) {} - - directory_iterator(const path& __p, error_code& __ec) - : directory_iterator(__p, &__ec) {} - - directory_iterator(const path& __p, directory_options __opts, - error_code& __ec) - : directory_iterator(__p, &__ec, __opts) {} - - directory_iterator(const directory_iterator&) = default; - directory_iterator(directory_iterator&&) = default; - directory_iterator& operator=(const directory_iterator&) = default; - - directory_iterator& operator=(directory_iterator&& __o) noexcept { - // non-default implementation provided to support self-move assign. - if (this != &__o) { - __imp_ = _VSTD::move(__o.__imp_); - } - return *this; - } - - ~directory_iterator() = default; - - const directory_entry& operator*() const { - _LIBCPP_ASSERT(__imp_, "The end iterator cannot be dereferenced"); - return __dereference(); - } - - const directory_entry* operator->() const { return &**this; } - - directory_iterator& operator++() { return __increment(); } - - __dir_element_proxy operator++(int) { - __dir_element_proxy __p(**this); - __increment(); - return __p; - } - - directory_iterator& increment(error_code& __ec) { return __increment(&__ec); } - -private: - inline _LIBCPP_INLINE_VISIBILITY friend bool - operator==(const directory_iterator& __lhs, - const directory_iterator& __rhs) noexcept; - - // construct the dir_stream - _LIBCPP_FUNC_VIS - directory_iterator(const path&, error_code*, - directory_options = directory_options::none); - - _LIBCPP_FUNC_VIS - directory_iterator& __increment(error_code* __ec = nullptr); - - _LIBCPP_FUNC_VIS - const directory_entry& __dereference() const; - -private: - shared_ptr<__dir_stream> __imp_; -}; - -inline _LIBCPP_INLINE_VISIBILITY bool -operator==(const directory_iterator& __lhs, - const directory_iterator& __rhs) noexcept { - return __lhs.__imp_ == __rhs.__imp_; -} - -inline _LIBCPP_INLINE_VISIBILITY bool -operator!=(const directory_iterator& __lhs, - const directory_iterator& __rhs) noexcept { - return !(__lhs == __rhs); -} - -// enable directory_iterator range-based for statements -inline _LIBCPP_INLINE_VISIBILITY directory_iterator -begin(directory_iterator __iter) noexcept { - return __iter; -} - -inline _LIBCPP_INLINE_VISIBILITY directory_iterator -end(const directory_iterator&) noexcept { - return directory_iterator(); -} - -class recursive_directory_iterator { -public: - using value_type = directory_entry; - using difference_type = std::ptrdiff_t; - using pointer = directory_entry const*; - using reference = directory_entry const&; - using iterator_category = std::input_iterator_tag; - -public: - // constructors and destructor - _LIBCPP_INLINE_VISIBILITY - recursive_directory_iterator() noexcept : __rec_(false) {} - - _LIBCPP_INLINE_VISIBILITY - explicit recursive_directory_iterator( - const path& __p, directory_options __xoptions = directory_options::none) - : recursive_directory_iterator(__p, __xoptions, nullptr) {} - - _LIBCPP_INLINE_VISIBILITY - recursive_directory_iterator(const path& __p, directory_options __xoptions, - error_code& __ec) - : recursive_directory_iterator(__p, __xoptions, &__ec) {} - - _LIBCPP_INLINE_VISIBILITY - recursive_directory_iterator(const path& __p, error_code& __ec) - : recursive_directory_iterator(__p, directory_options::none, &__ec) {} - - recursive_directory_iterator(const recursive_directory_iterator&) = default; - recursive_directory_iterator(recursive_directory_iterator&&) = default; - - recursive_directory_iterator& - operator=(const recursive_directory_iterator&) = default; - - _LIBCPP_INLINE_VISIBILITY - recursive_directory_iterator& - operator=(recursive_directory_iterator&& __o) noexcept { - // non-default implementation provided to support self-move assign. - if (this != &__o) { - __imp_ = _VSTD::move(__o.__imp_); - __rec_ = __o.__rec_; - } - return *this; - } - - ~recursive_directory_iterator() = default; - - _LIBCPP_INLINE_VISIBILITY - const directory_entry& operator*() const { return __dereference(); } - - _LIBCPP_INLINE_VISIBILITY - const directory_entry* operator->() const { return &__dereference(); } - - recursive_directory_iterator& operator++() { return __increment(); } - - _LIBCPP_INLINE_VISIBILITY - __dir_element_proxy operator++(int) { - __dir_element_proxy __p(**this); - __increment(); - return __p; - } - - _LIBCPP_INLINE_VISIBILITY - recursive_directory_iterator& increment(error_code& __ec) { - return __increment(&__ec); - } - - _LIBCPP_FUNC_VIS directory_options options() const; - _LIBCPP_FUNC_VIS int depth() const; - - _LIBCPP_INLINE_VISIBILITY - void pop() { __pop(); } - - _LIBCPP_INLINE_VISIBILITY - void pop(error_code& __ec) { __pop(&__ec); } - - _LIBCPP_INLINE_VISIBILITY - bool recursion_pending() const { return __rec_; } - - _LIBCPP_INLINE_VISIBILITY - void disable_recursion_pending() { __rec_ = false; } - -private: - recursive_directory_iterator(const path& __p, directory_options __opt, - error_code* __ec); - - _LIBCPP_FUNC_VIS - const directory_entry& __dereference() const; - - _LIBCPP_FUNC_VIS - bool __try_recursion(error_code* __ec); - - _LIBCPP_FUNC_VIS - void __advance(error_code* __ec = nullptr); - - _LIBCPP_FUNC_VIS - recursive_directory_iterator& __increment(error_code* __ec = nullptr); - - _LIBCPP_FUNC_VIS - void __pop(error_code* __ec = nullptr); - - inline _LIBCPP_INLINE_VISIBILITY friend bool - operator==(const recursive_directory_iterator&, - const recursive_directory_iterator&) noexcept; - - struct __shared_imp; - shared_ptr<__shared_imp> __imp_; - bool __rec_; -}; // class recursive_directory_iterator - -inline _LIBCPP_INLINE_VISIBILITY bool -operator==(const recursive_directory_iterator& __lhs, - const recursive_directory_iterator& __rhs) noexcept { - return __lhs.__imp_ == __rhs.__imp_; -} - -_LIBCPP_INLINE_VISIBILITY -inline bool operator!=(const recursive_directory_iterator& __lhs, - const recursive_directory_iterator& __rhs) noexcept { - return !(__lhs == __rhs); -} -// enable recursive_directory_iterator range-based for statements -inline _LIBCPP_INLINE_VISIBILITY recursive_directory_iterator -begin(recursive_directory_iterator __iter) noexcept { - return __iter; -} - -inline _LIBCPP_INLINE_VISIBILITY recursive_directory_iterator -end(const recursive_directory_iterator&) noexcept { - return recursive_directory_iterator(); -} - -} // namespace android::hardware::automotive::filesystem -#ifdef _LIBAUTO_UNDEF_VSTD -#undef _VSTD -#undef _LIBAUTO_UNDEF_VSTD -#endif - -#ifndef _LIBAUTO_UNDEF_VSTD_FS -#pragma pop_macro("_VSTD_FS") -#else -#undef _VSTD -#undef _LIBAUTO_UNDEF_VSTD_FS -#endif - -#endif // !_LIBCPP_CXX03_LANG - -_LIBCPP_POP_MACROS - -#endif // defined(_LIBCPP_VERSION) && _LIBCPP_VERSION > 8000 - -#endif // _LIBAUTO_FILESYSTEM diff --git a/automotive/can/1.0/default/libc++fs/src/filesystem/directory_iterator.cpp b/automotive/can/1.0/default/libc++fs/src/filesystem/directory_iterator.cpp deleted file mode 100644 index 0dbf492106..0000000000 --- a/automotive/can/1.0/default/libc++fs/src/filesystem/directory_iterator.cpp +++ /dev/null @@ -1,405 +0,0 @@ -//===------------------ directory_iterator.cpp ----------------------------===// -// -// The LLVM Compiler Infrastructure -// -// This file is dual licensed under the MIT and the University of Illinois Open -// Source Licenses. See LICENSE.TXT for details. -// -//===----------------------------------------------------------------------===// - -// TODO(152067309): Remove this once the libc++ upgrade is complete. -#include <__config> -#if defined(_LIBCPP_VERSION) && _LIBCPP_VERSION <= 8000 - -/* clang-format off */ -#include "automotive/filesystem" -#include <__config> - -#if defined(_LIBCPP_WIN32API) -#define WIN32_LEAN_AND_MEAN -#include -#else -#include -#endif -#include - -#include "filesystem_common.h" - -namespace android::hardware::automotive::filesystem { - -namespace detail { -namespace { - -#if !defined(_LIBCPP_WIN32API) -template -static file_type get_file_type(DirEntT* ent, int) { - switch (ent->d_type) { - case DT_BLK: - return file_type::block; - case DT_CHR: - return file_type::character; - case DT_DIR: - return file_type::directory; - case DT_FIFO: - return file_type::fifo; - case DT_LNK: - return file_type::symlink; - case DT_REG: - return file_type::regular; - case DT_SOCK: - return file_type::socket; - // Unlike in lstat, hitting "unknown" here simply means that the underlying - // filesystem doesn't support d_type. Report is as 'none' so we correctly - // set the cache to empty. - case DT_UNKNOWN: - break; - } - return file_type::none; -} - -template -static file_type get_file_type(DirEntT* ent, long) { - return file_type::none; -} - -static pair posix_readdir(DIR* dir_stream, - error_code& ec) { - struct dirent* dir_entry_ptr = nullptr; - errno = 0; // zero errno in order to detect errors - ec.clear(); - if ((dir_entry_ptr = ::readdir(dir_stream)) == nullptr) { - if (errno) - ec = capture_errno(); - return {}; - } else { - return {dir_entry_ptr->d_name, get_file_type(dir_entry_ptr, 0)}; - } -} -#else - -static file_type get_file_type(const WIN32_FIND_DATA& data) { - //auto attrs = data.dwFileAttributes; - // FIXME(EricWF) - return file_type::unknown; -} -static uintmax_t get_file_size(const WIN32_FIND_DATA& data) { - return (data.nFileSizeHight * (MAXDWORD + 1)) + data.nFileSizeLow; -} -static file_time_type get_write_time(const WIN32_FIND_DATA& data) { - ULARGE_INTEGER tmp; - FILETIME& time = data.ftLastWriteTime; - tmp.u.LowPart = time.dwLowDateTime; - tmp.u.HighPart = time.dwHighDateTime; - return file_time_type(file_time_type::duration(time.QuadPart)); -} - -#endif - -} // namespace -} // namespace detail - -using detail::ErrorHandler; - -#if defined(_LIBCPP_WIN32API) -class __dir_stream { -public: - __dir_stream() = delete; - __dir_stream& operator=(const __dir_stream&) = delete; - - __dir_stream(__dir_stream&& __ds) noexcept : __stream_(__ds.__stream_), - __root_(move(__ds.__root_)), - __entry_(move(__ds.__entry_)) { - __ds.__stream_ = INVALID_HANDLE_VALUE; - } - - __dir_stream(const path& root, directory_options opts, error_code& ec) - : __stream_(INVALID_HANDLE_VALUE), __root_(root) { - __stream_ = ::FindFirstFileEx(root.c_str(), &__data_); - if (__stream_ == INVALID_HANDLE_VALUE) { - ec = error_code(::GetLastError(), generic_category()); - const bool ignore_permission_denied = - bool(opts & directory_options::skip_permission_denied); - if (ignore_permission_denied && ec.value() == ERROR_ACCESS_DENIED) - ec.clear(); - return; - } - } - - ~__dir_stream() noexcept { - if (__stream_ == INVALID_HANDLE_VALUE) - return; - close(); - } - - bool good() const noexcept { return __stream_ != INVALID_HANDLE_VALUE; } - - bool advance(error_code& ec) { - while (::FindNextFile(__stream_, &__data_)) { - if (!strcmp(__data_.cFileName, ".") || strcmp(__data_.cFileName, "..")) - continue; - // FIXME: Cache more of this - //directory_entry::__cached_data cdata; - //cdata.__type_ = get_file_type(__data_); - //cdata.__size_ = get_file_size(__data_); - //cdata.__write_time_ = get_write_time(__data_); - __entry_.__assign_iter_entry( - __root_ / __data_.cFileName, - directory_entry::__create_iter_result(get_file_type(__data))); - return true; - } - ec = error_code(::GetLastError(), generic_category()); - close(); - return false; - } - -private: - error_code close() noexcept { - error_code ec; - if (!::FindClose(__stream_)) - ec = error_code(::GetLastError(), generic_category()); - __stream_ = INVALID_HANDLE_VALUE; - return ec; - } - - HANDLE __stream_{INVALID_HANDLE_VALUE}; - WIN32_FIND_DATA __data_; - -public: - path __root_; - directory_entry __entry_; -}; -#else -class __dir_stream { -public: - __dir_stream() = delete; - __dir_stream& operator=(const __dir_stream&) = delete; - - __dir_stream(__dir_stream&& other) noexcept : __stream_(other.__stream_), - __root_(std::move(other.__root_)), - __entry_(std::move(other.__entry_)) { - other.__stream_ = nullptr; - } - - __dir_stream(const path& root, directory_options opts, error_code& ec) - : __stream_(nullptr), __root_(root) { - if ((__stream_ = ::opendir(root.c_str())) == nullptr) { - ec = detail::capture_errno(); - const bool allow_eacess = - bool(opts & directory_options::skip_permission_denied); - if (allow_eacess && ec.value() == EACCES) - ec.clear(); - return; - } - advance(ec); - } - - ~__dir_stream() noexcept { - if (__stream_) - close(); - } - - bool good() const noexcept { return __stream_ != nullptr; } - - bool advance(error_code& ec) { - while (true) { - auto str_type_pair = detail::posix_readdir(__stream_, ec); - auto& str = str_type_pair.first; - if (str == "." || str == "..") { - continue; - } else if (ec || str.empty()) { - close(); - return false; - } else { - __entry_.__assign_iter_entry( - __root_ / str, - directory_entry::__create_iter_result(str_type_pair.second)); - return true; - } - } - } - -private: - error_code close() noexcept { - error_code m_ec; - if (::closedir(__stream_) == -1) - m_ec = detail::capture_errno(); - __stream_ = nullptr; - return m_ec; - } - - DIR* __stream_{nullptr}; - -public: - path __root_; - directory_entry __entry_; -}; -#endif - -// directory_iterator - -directory_iterator::directory_iterator(const path& p, error_code* ec, - directory_options opts) { - ErrorHandler err("directory_iterator::directory_iterator(...)", ec, &p); - - error_code m_ec; - __imp_ = make_shared<__dir_stream>(p, opts, m_ec); - if (ec) - *ec = m_ec; - if (!__imp_->good()) { - __imp_.reset(); - if (m_ec) - err.report(m_ec); - } -} - -directory_iterator& directory_iterator::__increment(error_code* ec) { - _LIBCPP_ASSERT(__imp_, "Attempting to increment an invalid iterator"); - ErrorHandler err("directory_iterator::operator++()", ec); - - error_code m_ec; - if (!__imp_->advance(m_ec)) { - path root = std::move(__imp_->__root_); - __imp_.reset(); - if (m_ec) - err.report(m_ec, "at root \"%s\"", root); - } - return *this; -} - -directory_entry const& directory_iterator::__dereference() const { - _LIBCPP_ASSERT(__imp_, "Attempting to dereference an invalid iterator"); - return __imp_->__entry_; -} - -// recursive_directory_iterator - -struct recursive_directory_iterator::__shared_imp { - stack<__dir_stream> __stack_; - directory_options __options_; -}; - -recursive_directory_iterator::recursive_directory_iterator( - const path& p, directory_options opt, error_code* ec) - : __imp_(nullptr), __rec_(true) { - ErrorHandler err("recursive_directory_iterator", ec, &p); - - error_code m_ec; - __dir_stream new_s(p, opt, m_ec); - if (m_ec) - err.report(m_ec); - if (m_ec || !new_s.good()) - return; - - __imp_ = make_shared<__shared_imp>(); - __imp_->__options_ = opt; - __imp_->__stack_.push(std::move(new_s)); -} - -void recursive_directory_iterator::__pop(error_code* ec) { - _LIBCPP_ASSERT(__imp_, "Popping the end iterator"); - if (ec) - ec->clear(); - __imp_->__stack_.pop(); - if (__imp_->__stack_.size() == 0) - __imp_.reset(); - else - __advance(ec); -} - -directory_options recursive_directory_iterator::options() const { - return __imp_->__options_; -} - -int recursive_directory_iterator::depth() const { - return __imp_->__stack_.size() - 1; -} - -const directory_entry& recursive_directory_iterator::__dereference() const { - return __imp_->__stack_.top().__entry_; -} - -recursive_directory_iterator& -recursive_directory_iterator::__increment(error_code* ec) { - if (ec) - ec->clear(); - if (recursion_pending()) { - if (__try_recursion(ec) || (ec && *ec)) - return *this; - } - __rec_ = true; - __advance(ec); - return *this; -} - -void recursive_directory_iterator::__advance(error_code* ec) { - ErrorHandler err("recursive_directory_iterator::operator++()", ec); - - const directory_iterator end_it; - auto& stack = __imp_->__stack_; - error_code m_ec; - while (stack.size() > 0) { - if (stack.top().advance(m_ec)) - return; - if (m_ec) - break; - stack.pop(); - } - - if (m_ec) { - path root = std::move(stack.top().__root_); - __imp_.reset(); - err.report(m_ec, "at root \"%s\"", root); - } else { - __imp_.reset(); - } -} - -bool recursive_directory_iterator::__try_recursion(error_code* ec) { - ErrorHandler err("recursive_directory_iterator::operator++()", ec); - - bool rec_sym = bool(options() & directory_options::follow_directory_symlink); - - auto& curr_it = __imp_->__stack_.top(); - - bool skip_rec = false; - error_code m_ec; - if (!rec_sym) { - file_status st(curr_it.__entry_.__get_sym_ft(&m_ec)); - if (m_ec && status_known(st)) - m_ec.clear(); - if (m_ec || is_symlink(st) || !is_directory(st)) - skip_rec = true; - } else { - file_status st(curr_it.__entry_.__get_ft(&m_ec)); - if (m_ec && status_known(st)) - m_ec.clear(); - if (m_ec || !is_directory(st)) - skip_rec = true; - } - - if (!skip_rec) { - __dir_stream new_it(curr_it.__entry_.path(), __imp_->__options_, m_ec); - if (new_it.good()) { - __imp_->__stack_.push(std::move(new_it)); - return true; - } - } - if (m_ec) { - const bool allow_eacess = - bool(__imp_->__options_ & directory_options::skip_permission_denied); - if (m_ec.value() == EACCES && allow_eacess) { - if (ec) - ec->clear(); - } else { - path at_ent = std::move(curr_it.__entry_.__p_); - __imp_.reset(); - err.report(m_ec, "attempting recursion into \"%s\"", at_ent); - } - } - return false; -} - -} // namespace android::hardware::automotive::filesystem -/* clang-format on */ - -#endif // defined(_LIBCPP_VERSION) && _LIBCPP_VERSION <= 8000 diff --git a/automotive/can/1.0/default/libc++fs/src/filesystem/filesystem_common.h b/automotive/can/1.0/default/libc++fs/src/filesystem/filesystem_common.h deleted file mode 100644 index 4f4466120a..0000000000 --- a/automotive/can/1.0/default/libc++fs/src/filesystem/filesystem_common.h +++ /dev/null @@ -1,441 +0,0 @@ -//===----------------------------------------------------------------------===//// -// -// The LLVM Compiler Infrastructure -// -// This file is dual licensed under the MIT and the University of Illinois Open -// Source Licenses. See LICENSE.TXT for details. -// -//===----------------------------------------------------------------------===//// -/* clang-format off */ -#ifndef AUTO_FILESYSTEM_COMMON_H -#define AUTO_FILESYSTEM_COMMON_H - -#include "automotive/filesystem" -#include -#include -#include -#include - -#include -#include -#include -#include // for ::utimes as used in __last_write_time -#include /* values for fchmodat */ - -#if !defined(__APPLE__) -// We can use the presence of UTIME_OMIT to detect platforms that provide -// utimensat. -#if defined(UTIME_OMIT) -#define _LIBCPP_USE_UTIMENSAT -#endif -#endif - -#if defined(__GNUC__) -#pragma GCC diagnostic push -#pragma GCC diagnostic ignored "-Wunused-function" -#endif - -namespace android::hardware::automotive::filesystem { -using namespace std::chrono; - -using std::error_code; -using std::is_floating_point; -using std::micro; -using std::nano; -using std::ratio; - -namespace detail { -namespace { - -static string format_string_imp(const char* msg, ...) { - // we might need a second shot at this, so pre-emptivly make a copy - struct GuardVAList { - va_list& target; - bool active = true; - GuardVAList(va_list& target) : target(target), active(true) {} - void clear() { - if (active) - va_end(target); - active = false; - } - ~GuardVAList() { - if (active) - va_end(target); - } - }; - va_list args; - va_start(args, msg); - GuardVAList args_guard(args); - - va_list args_cp; - va_copy(args_cp, args); - GuardVAList args_copy_guard(args_cp); - - std::string result; - - array local_buff; - size_t size_with_null = local_buff.size(); - auto ret = ::vsnprintf(local_buff.data(), size_with_null, msg, args_cp); - - args_copy_guard.clear(); - - // handle empty expansion - if (ret == 0) - return result; - if (static_cast(ret) < size_with_null) { - result.assign(local_buff.data(), static_cast(ret)); - return result; - } - - // we did not provide a long enough buffer on our first attempt. The - // return value is the number of bytes (excluding the null byte) that are - // needed for formatting. - size_with_null = static_cast(ret) + 1; - result.__resize_default_init(size_with_null - 1); - ret = ::vsnprintf(&result[0], size_with_null, msg, args); - _LIBCPP_ASSERT(static_cast(ret) == (size_with_null - 1), "TODO"); - - return result; -} - -const char* unwrap(string const& s) { return s.c_str(); } -const char* unwrap(path const& p) { return p.native().c_str(); } -template -Arg const& unwrap(Arg const& a) { - static_assert(!is_class::value, "cannot pass class here"); - return a; -} - -template -string format_string(const char* fmt, Args const&... args) { - return format_string_imp(fmt, unwrap(args)...); -} - -error_code capture_errno() { - _LIBCPP_ASSERT(errno, "Expected errno to be non-zero"); - return error_code(errno, generic_category()); -} - -template -T error_value(); -template <> -_LIBCPP_CONSTEXPR_AFTER_CXX11 void error_value() {} -template <> -bool error_value() { - return false; -} -template <> -uintmax_t error_value() { - return uintmax_t(-1); -} -template <> -_LIBCPP_CONSTEXPR_AFTER_CXX11 file_time_type error_value() { - return file_time_type::min(); -} -template <> -path error_value() { - return {}; -} - -template -struct ErrorHandler { - const char* func_name; - error_code* ec = nullptr; - const path* p1 = nullptr; - const path* p2 = nullptr; - - ErrorHandler(const char* fname, error_code* ec, const path* p1 = nullptr, - const path* p2 = nullptr) - : func_name(fname), ec(ec), p1(p1), p2(p2) { - if (ec) - ec->clear(); - } - - T report(const error_code& m_ec) const { - if (ec) { - *ec = m_ec; - return error_value(); - } - string what = string("in ") + func_name; - switch (bool(p1) + bool(p2)) { - case 0: - __throw_filesystem_error(what, m_ec); - case 1: - __throw_filesystem_error(what, *p1, m_ec); - case 2: - __throw_filesystem_error(what, *p1, *p2, m_ec); - } - _LIBCPP_UNREACHABLE(); - } - - template - T report(const error_code& m_ec, const char* msg, Args const&... args) const { - if (ec) { - *ec = m_ec; - return error_value(); - } - string what = - string("in ") + func_name + ": " + format_string(msg, args...); - switch (bool(p1) + bool(p2)) { - case 0: - __throw_filesystem_error(what, m_ec); - case 1: - __throw_filesystem_error(what, *p1, m_ec); - case 2: - __throw_filesystem_error(what, *p1, *p2, m_ec); - } - _LIBCPP_UNREACHABLE(); - } - - T report(errc const& err) const { return report(make_error_code(err)); } - - template - T report(errc const& err, const char* msg, Args const&... args) const { - return report(make_error_code(err), msg, args...); - } - -private: - ErrorHandler(ErrorHandler const&) = delete; - ErrorHandler& operator=(ErrorHandler const&) = delete; -}; - -using chrono::duration; -using chrono::duration_cast; - -using TimeSpec = struct ::timespec; -using StatT = struct ::stat; - -template ::value> -struct time_util_base { - using rep = typename FileTimeT::rep; - using fs_duration = typename FileTimeT::duration; - using fs_seconds = duration; - using fs_nanoseconds = duration; - using fs_microseconds = duration; - - static constexpr rep max_seconds = - duration_cast(FileTimeT::duration::max()).count(); - - static constexpr rep max_nsec = - duration_cast(FileTimeT::duration::max() - - fs_seconds(max_seconds)) - .count(); - - static constexpr rep min_seconds = - duration_cast(FileTimeT::duration::min()).count(); - - static constexpr rep min_nsec_timespec = - duration_cast( - (FileTimeT::duration::min() - fs_seconds(min_seconds)) + - fs_seconds(1)) - .count(); - -private: -#if _LIBCPP_STD_VER > 11 && !defined(_LIBCPP_HAS_NO_CXX14_CONSTEXPR) - static constexpr fs_duration get_min_nsecs() { - return duration_cast( - fs_nanoseconds(min_nsec_timespec) - - duration_cast(fs_seconds(1))); - } - // Static assert that these values properly round trip. - static_assert(fs_seconds(min_seconds) + get_min_nsecs() == - FileTimeT::duration::min(), - "value doesn't roundtrip"); - - static constexpr bool check_range() { - // This kinda sucks, but it's what happens when we don't have __int128_t. - if (sizeof(TimeT) == sizeof(rep)) { - typedef duration > Years; - return duration_cast(fs_seconds(max_seconds)) > Years(250) && - duration_cast(fs_seconds(min_seconds)) < Years(-250); - } - return max_seconds >= numeric_limits::max() && - min_seconds <= numeric_limits::min(); - } - static_assert(check_range(), "the representable range is unacceptable small"); -#endif -}; - -template -struct time_util_base { - using rep = typename FileTimeT::rep; - using fs_duration = typename FileTimeT::duration; - using fs_seconds = duration; - using fs_nanoseconds = duration; - using fs_microseconds = duration; - - static const rep max_seconds; - static const rep max_nsec; - static const rep min_seconds; - static const rep min_nsec_timespec; -}; - -template -const typename FileTimeT::rep - time_util_base::max_seconds = - duration_cast(FileTimeT::duration::max()).count(); - -template -const typename FileTimeT::rep time_util_base::max_nsec = - duration_cast(FileTimeT::duration::max() - - fs_seconds(max_seconds)) - .count(); - -template -const typename FileTimeT::rep - time_util_base::min_seconds = - duration_cast(FileTimeT::duration::min()).count(); - -template -const typename FileTimeT::rep - time_util_base::min_nsec_timespec = - duration_cast((FileTimeT::duration::min() - - fs_seconds(min_seconds)) + - fs_seconds(1)) - .count(); - -template -struct time_util : time_util_base { - using Base = time_util_base; - using Base::max_nsec; - using Base::max_seconds; - using Base::min_nsec_timespec; - using Base::min_seconds; - - using typename Base::fs_duration; - using typename Base::fs_microseconds; - using typename Base::fs_nanoseconds; - using typename Base::fs_seconds; - -public: - template - static _LIBCPP_CONSTEXPR_AFTER_CXX11 bool checked_set(CType* out, - ChronoType time) { - using Lim = numeric_limits; - if (time > Lim::max() || time < Lim::min()) - return false; - *out = static_cast(time); - return true; - } - - static _LIBCPP_CONSTEXPR_AFTER_CXX11 bool is_representable(TimeSpecT tm) { - if (tm.tv_sec >= 0) { - return tm.tv_sec < max_seconds || - (tm.tv_sec == max_seconds && tm.tv_nsec <= max_nsec); - } else if (tm.tv_sec == (min_seconds - 1)) { - return tm.tv_nsec >= min_nsec_timespec; - } else { - return tm.tv_sec >= min_seconds; - } - } - - static _LIBCPP_CONSTEXPR_AFTER_CXX11 bool is_representable(FileTimeT tm) { - auto secs = duration_cast(tm.time_since_epoch()); - auto nsecs = duration_cast(tm.time_since_epoch() - secs); - if (nsecs.count() < 0) { - secs = secs + fs_seconds(1); - nsecs = nsecs + fs_seconds(1); - } - using TLim = numeric_limits; - if (secs.count() >= 0) - return secs.count() <= TLim::max(); - return secs.count() >= TLim::min(); - } - - static _LIBCPP_CONSTEXPR_AFTER_CXX11 FileTimeT - convert_from_timespec(TimeSpecT tm) { - if (tm.tv_sec >= 0 || tm.tv_nsec == 0) { - return FileTimeT(fs_seconds(tm.tv_sec) + - duration_cast(fs_nanoseconds(tm.tv_nsec))); - } else { // tm.tv_sec < 0 - auto adj_subsec = duration_cast(fs_seconds(1) - - fs_nanoseconds(tm.tv_nsec)); - auto Dur = fs_seconds(tm.tv_sec + 1) - adj_subsec; - return FileTimeT(Dur); - } - } - - template - static _LIBCPP_CONSTEXPR_AFTER_CXX11 bool - set_times_checked(TimeT* sec_out, SubSecT* subsec_out, FileTimeT tp) { - auto dur = tp.time_since_epoch(); - auto sec_dur = duration_cast(dur); - auto subsec_dur = duration_cast(dur - sec_dur); - // The tv_nsec and tv_usec fields must not be negative so adjust accordingly - if (subsec_dur.count() < 0) { - if (sec_dur.count() > min_seconds) { - sec_dur = sec_dur - fs_seconds(1); - subsec_dur = subsec_dur + fs_seconds(1); - } else { - subsec_dur = fs_nanoseconds::zero(); - } - } - return checked_set(sec_out, sec_dur.count()) && - checked_set(subsec_out, subsec_dur.count()); - } - static _LIBCPP_CONSTEXPR_AFTER_CXX11 bool convert_to_timespec(TimeSpecT& dest, - FileTimeT tp) { - if (!is_representable(tp)) - return false; - return set_times_checked(&dest.tv_sec, &dest.tv_nsec, tp); - } -}; - -using fs_time = time_util; - -#if defined(__APPLE__) -TimeSpec extract_mtime(StatT const& st) { return st.st_mtimespec; } -TimeSpec extract_atime(StatT const& st) { return st.st_atimespec; } -#else -TimeSpec extract_mtime(StatT const& st) { return st.st_mtim; } -TimeSpec extract_atime(StatT const& st) { return st.st_atim; } -#endif - -// allow the utimes implementation to compile even it we're not going -// to use it. - -bool posix_utimes(const path& p, std::array const& TS, - error_code& ec) { - using namespace chrono; - auto Convert = [](long nsec) { - using int_type = decltype(std::declval< ::timeval>().tv_usec); - auto dur = duration_cast(nanoseconds(nsec)).count(); - return static_cast(dur); - }; - struct ::timeval ConvertedTS[2] = {{TS[0].tv_sec, Convert(TS[0].tv_nsec)}, - {TS[1].tv_sec, Convert(TS[1].tv_nsec)}}; - if (::utimes(p.c_str(), ConvertedTS) == -1) { - ec = capture_errno(); - return true; - } - return false; -} - -#if defined(_LIBCPP_USE_UTIMENSAT) -bool posix_utimensat(const path& p, std::array const& TS, - error_code& ec) { - if (::utimensat(AT_FDCWD, p.c_str(), TS.data(), 0) == -1) { - ec = capture_errno(); - return true; - } - return false; -} -#endif - -bool set_file_times(const path& p, std::array const& TS, - error_code& ec) { -#if !defined(_LIBCPP_USE_UTIMENSAT) - return posix_utimes(p, TS, ec); -#else - return posix_utimensat(p, TS, ec); -#endif -} - -} // namespace -} // end namespace detail - -} // namespace android::hardware::automotive::filesystem - -#endif // AUTO_FILESYSTEM_COMMON_H -/* clang-format on */ diff --git a/automotive/can/1.0/default/libc++fs/src/filesystem/operations.cpp b/automotive/can/1.0/default/libc++fs/src/filesystem/operations.cpp deleted file mode 100644 index 6a76bdce55..0000000000 --- a/automotive/can/1.0/default/libc++fs/src/filesystem/operations.cpp +++ /dev/null @@ -1,1780 +0,0 @@ -//===--------------------- filesystem/ops.cpp -----------------------------===// -// -// The LLVM Compiler Infrastructure -// -// This file is dual licensed under the MIT and the University of Illinois Open -// Source Licenses. See LICENSE.TXT for details. -// -//===----------------------------------------------------------------------===// - -// TODO(152067309): Remove this once the libc++ upgrade is complete. -#include <__config> -#if defined(_LIBCPP_VERSION) && _LIBCPP_VERSION <= 8000 - -/* clang-format off */ -#include "automotive/filesystem" -#include -#include -#include -#include /* for unique_path */ -#include -#include -#include -#include -#include - -#include "filesystem_common.h" - -#include -#include -#include -#include -#include /* values for fchmodat */ - -#if defined(__linux__) -#include -#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 33) -#include -#define _LIBCPP_USE_SENDFILE -#endif -#elif defined(__APPLE__) || __has_include() -#include -#define _LIBCPP_USE_COPYFILE -#endif - -#if !defined(__APPLE__) -#define _LIBCPP_USE_CLOCK_GETTIME -#endif - -#if !defined(CLOCK_REALTIME) || !defined(_LIBCPP_USE_CLOCK_GETTIME) -#include // for gettimeofday and timeval -#endif // !defined(CLOCK_REALTIME) - -#if defined(_LIBCPP_COMPILER_GCC) -#if _GNUC_VER < 500 -#pragma GCC diagnostic ignored "-Wmissing-field-initializers" -#endif -#endif - -namespace android::hardware::automotive::filesystem { - -#ifdef _VSTD_FS -#pragma push_macro("_VSTD_FS") -#else -#define _LIBAUTO_UNDEF_VSTD_FS -#endif -#define _VSTD_FS android::hardware::automotive::filesystem - -namespace { -namespace parser { - -using string_view_t = path::__string_view; -using string_view_pair = pair; -using PosPtr = path::value_type const*; - -struct PathParser { - enum ParserState : unsigned char { - // Zero is a special sentinel value used by default constructed iterators. - PS_BeforeBegin = path::iterator::_BeforeBegin, - PS_InRootName = path::iterator::_InRootName, - PS_InRootDir = path::iterator::_InRootDir, - PS_InFilenames = path::iterator::_InFilenames, - PS_InTrailingSep = path::iterator::_InTrailingSep, - PS_AtEnd = path::iterator::_AtEnd - }; - - const string_view_t Path; - string_view_t RawEntry; - ParserState State; - -private: - PathParser(string_view_t P, ParserState State) noexcept : Path(P), - State(State) {} - -public: - PathParser(string_view_t P, string_view_t E, unsigned char S) - : Path(P), RawEntry(E), State(static_cast(S)) { - // S cannot be '0' or PS_BeforeBegin. - } - - static PathParser CreateBegin(string_view_t P) noexcept { - PathParser PP(P, PS_BeforeBegin); - PP.increment(); - return PP; - } - - static PathParser CreateEnd(string_view_t P) noexcept { - PathParser PP(P, PS_AtEnd); - return PP; - } - - PosPtr peek() const noexcept { - auto TkEnd = getNextTokenStartPos(); - auto End = getAfterBack(); - return TkEnd == End ? nullptr : TkEnd; - } - - void increment() noexcept { - const PosPtr End = getAfterBack(); - const PosPtr Start = getNextTokenStartPos(); - if (Start == End) - return makeState(PS_AtEnd); - - switch (State) { - case PS_BeforeBegin: { - PosPtr TkEnd = consumeSeparator(Start, End); - if (TkEnd) - return makeState(PS_InRootDir, Start, TkEnd); - else - return makeState(PS_InFilenames, Start, consumeName(Start, End)); - } - case PS_InRootDir: - return makeState(PS_InFilenames, Start, consumeName(Start, End)); - - case PS_InFilenames: { - PosPtr SepEnd = consumeSeparator(Start, End); - if (SepEnd != End) { - PosPtr TkEnd = consumeName(SepEnd, End); - if (TkEnd) - return makeState(PS_InFilenames, SepEnd, TkEnd); - } - return makeState(PS_InTrailingSep, Start, SepEnd); - } - - case PS_InTrailingSep: - return makeState(PS_AtEnd); - - case PS_InRootName: - case PS_AtEnd: - _LIBCPP_UNREACHABLE(); - } - } - - void decrement() noexcept { - const PosPtr REnd = getBeforeFront(); - const PosPtr RStart = getCurrentTokenStartPos() - 1; - if (RStart == REnd) // we're decrementing the begin - return makeState(PS_BeforeBegin); - - switch (State) { - case PS_AtEnd: { - // Try to consume a trailing separator or root directory first. - if (PosPtr SepEnd = consumeSeparator(RStart, REnd)) { - if (SepEnd == REnd) - return makeState(PS_InRootDir, Path.data(), RStart + 1); - return makeState(PS_InTrailingSep, SepEnd + 1, RStart + 1); - } else { - PosPtr TkStart = consumeName(RStart, REnd); - return makeState(PS_InFilenames, TkStart + 1, RStart + 1); - } - } - case PS_InTrailingSep: - return makeState(PS_InFilenames, consumeName(RStart, REnd) + 1, - RStart + 1); - case PS_InFilenames: { - PosPtr SepEnd = consumeSeparator(RStart, REnd); - if (SepEnd == REnd) - return makeState(PS_InRootDir, Path.data(), RStart + 1); - PosPtr TkEnd = consumeName(SepEnd, REnd); - return makeState(PS_InFilenames, TkEnd + 1, SepEnd + 1); - } - case PS_InRootDir: - // return makeState(PS_InRootName, Path.data(), RStart + 1); - case PS_InRootName: - case PS_BeforeBegin: - _LIBCPP_UNREACHABLE(); - } - } - - /// \brief Return a view with the "preferred representation" of the current - /// element. For example trailing separators are represented as a '.' - string_view_t operator*() const noexcept { - switch (State) { - case PS_BeforeBegin: - case PS_AtEnd: - return ""; - case PS_InRootDir: - return "/"; - case PS_InTrailingSep: - return ""; - case PS_InRootName: - case PS_InFilenames: - return RawEntry; - } - _LIBCPP_UNREACHABLE(); - } - - explicit operator bool() const noexcept { - return State != PS_BeforeBegin && State != PS_AtEnd; - } - - PathParser& operator++() noexcept { - increment(); - return *this; - } - - PathParser& operator--() noexcept { - decrement(); - return *this; - } - - bool atEnd() const noexcept { - return State == PS_AtEnd; - } - - bool inRootDir() const noexcept { - return State == PS_InRootDir; - } - - bool inRootName() const noexcept { - return State == PS_InRootName; - } - - bool inRootPath() const noexcept { - return inRootName() || inRootDir(); - } - -private: - void makeState(ParserState NewState, PosPtr Start, PosPtr End) noexcept { - State = NewState; - RawEntry = string_view_t(Start, End - Start); - } - void makeState(ParserState NewState) noexcept { - State = NewState; - RawEntry = {}; - } - - PosPtr getAfterBack() const noexcept { return Path.data() + Path.size(); } - - PosPtr getBeforeFront() const noexcept { return Path.data() - 1; } - - /// \brief Return a pointer to the first character after the currently - /// lexed element. - PosPtr getNextTokenStartPos() const noexcept { - switch (State) { - case PS_BeforeBegin: - return Path.data(); - case PS_InRootName: - case PS_InRootDir: - case PS_InFilenames: - return &RawEntry.back() + 1; - case PS_InTrailingSep: - case PS_AtEnd: - return getAfterBack(); - } - _LIBCPP_UNREACHABLE(); - } - - /// \brief Return a pointer to the first character in the currently lexed - /// element. - PosPtr getCurrentTokenStartPos() const noexcept { - switch (State) { - case PS_BeforeBegin: - case PS_InRootName: - return &Path.front(); - case PS_InRootDir: - case PS_InFilenames: - case PS_InTrailingSep: - return &RawEntry.front(); - case PS_AtEnd: - return &Path.back() + 1; - } - _LIBCPP_UNREACHABLE(); - } - - PosPtr consumeSeparator(PosPtr P, PosPtr End) const noexcept { - if (P == End || *P != '/') - return nullptr; - const int Inc = P < End ? 1 : -1; - P += Inc; - while (P != End && *P == '/') - P += Inc; - return P; - } - - PosPtr consumeName(PosPtr P, PosPtr End) const noexcept { - if (P == End || *P == '/') - return nullptr; - const int Inc = P < End ? 1 : -1; - P += Inc; - while (P != End && *P != '/') - P += Inc; - return P; - } -}; - -string_view_pair separate_filename(string_view_t const& s) { - if (s == "." || s == ".." || s.empty()) - return string_view_pair{s, ""}; - auto pos = s.find_last_of('.'); - if (pos == string_view_t::npos || pos == 0) - return string_view_pair{s, string_view_t{}}; - return string_view_pair{s.substr(0, pos), s.substr(pos)}; -} - -string_view_t createView(PosPtr S, PosPtr E) noexcept { - return {S, static_cast(E - S) + 1}; -} - -} // namespace parser -} // namespace - -// POSIX HELPERS - -namespace detail { -namespace { - -using value_type = path::value_type; -using string_type = path::string_type; - -struct FileDescriptor { - const path& name; - int fd = -1; - StatT m_stat; - file_status m_status; - - template - static FileDescriptor create(const path* p, error_code& ec, Args... args) { - ec.clear(); - int fd; - if ((fd = ::open(p->c_str(), args...)) == -1) { - ec = capture_errno(); - return FileDescriptor{p}; - } - return FileDescriptor(p, fd); - } - - template - static FileDescriptor create_with_status(const path* p, error_code& ec, - Args... args) { - FileDescriptor fd = create(p, ec, args...); - if (!ec) - fd.refresh_status(ec); - - return fd; - } - - file_status get_status() const { return m_status; } - StatT const& get_stat() const { return m_stat; } - - bool status_known() const { return _VSTD_FS::status_known(m_status); } - - file_status refresh_status(error_code& ec); - - void close() noexcept { - if (fd != -1) - ::close(fd); - fd = -1; - } - - FileDescriptor(FileDescriptor&& other) - : name(other.name), fd(other.fd), m_stat(other.m_stat), - m_status(other.m_status) { - other.fd = -1; - other.m_status = file_status{}; - } - - ~FileDescriptor() { close(); } - - FileDescriptor(FileDescriptor const&) = delete; - FileDescriptor& operator=(FileDescriptor const&) = delete; - -private: - explicit FileDescriptor(const path* p, int fd = -1) : name(*p), fd(fd) {} -}; - -perms posix_get_perms(const StatT& st) noexcept { - return static_cast(st.st_mode) & perms::mask; -} - -::mode_t posix_convert_perms(perms prms) { - return static_cast< ::mode_t>(prms & perms::mask); -} - -file_status create_file_status(error_code& m_ec, path const& p, - const StatT& path_stat, error_code* ec) { - if (ec) - *ec = m_ec; - if (m_ec && (m_ec.value() == ENOENT || m_ec.value() == ENOTDIR)) { - return file_status(file_type::not_found); - } else if (m_ec) { - ErrorHandler err("posix_stat", ec, &p); - err.report(m_ec, "failed to determine attributes for the specified path"); - return file_status(file_type::none); - } - // else - - file_status fs_tmp; - auto const mode = path_stat.st_mode; - if (S_ISLNK(mode)) - fs_tmp.type(file_type::symlink); - else if (S_ISREG(mode)) - fs_tmp.type(file_type::regular); - else if (S_ISDIR(mode)) - fs_tmp.type(file_type::directory); - else if (S_ISBLK(mode)) - fs_tmp.type(file_type::block); - else if (S_ISCHR(mode)) - fs_tmp.type(file_type::character); - else if (S_ISFIFO(mode)) - fs_tmp.type(file_type::fifo); - else if (S_ISSOCK(mode)) - fs_tmp.type(file_type::socket); - else - fs_tmp.type(file_type::unknown); - - fs_tmp.permissions(detail::posix_get_perms(path_stat)); - return fs_tmp; -} - -file_status posix_stat(path const& p, StatT& path_stat, error_code* ec) { - error_code m_ec; - if (::stat(p.c_str(), &path_stat) == -1) - m_ec = detail::capture_errno(); - return create_file_status(m_ec, p, path_stat, ec); -} - -file_status posix_stat(path const& p, error_code* ec) { - StatT path_stat; - return posix_stat(p, path_stat, ec); -} - -file_status posix_lstat(path const& p, StatT& path_stat, error_code* ec) { - error_code m_ec; - if (::lstat(p.c_str(), &path_stat) == -1) - m_ec = detail::capture_errno(); - return create_file_status(m_ec, p, path_stat, ec); -} - -file_status posix_lstat(path const& p, error_code* ec) { - StatT path_stat; - return posix_lstat(p, path_stat, ec); -} - -bool posix_ftruncate(const FileDescriptor& fd, size_t to_size, error_code& ec) { - if (::ftruncate(fd.fd, to_size) == -1) { - ec = capture_errno(); - return true; - } - ec.clear(); - return false; -} - -bool posix_fchmod(const FileDescriptor& fd, const StatT& st, error_code& ec) { - if (::fchmod(fd.fd, st.st_mode) == -1) { - ec = capture_errno(); - return true; - } - ec.clear(); - return false; -} - -bool stat_equivalent(const StatT& st1, const StatT& st2) { - return (st1.st_dev == st2.st_dev && st1.st_ino == st2.st_ino); -} - -file_status FileDescriptor::refresh_status(error_code& ec) { - // FD must be open and good. - m_status = file_status{}; - m_stat = {}; - error_code m_ec; - if (::fstat(fd, &m_stat) == -1) - m_ec = capture_errno(); - m_status = create_file_status(m_ec, name, m_stat, &ec); - return m_status; -} -} // namespace -} // end namespace detail - -using detail::capture_errno; -using detail::ErrorHandler; -using detail::StatT; -using detail::TimeSpec; -using parser::createView; -using parser::PathParser; -using parser::string_view_t; - -const bool _FilesystemClock::is_steady; - -_FilesystemClock::time_point _FilesystemClock::now() noexcept { - typedef chrono::duration __secs; -#if defined(_LIBCPP_USE_CLOCK_GETTIME) && defined(CLOCK_REALTIME) - typedef chrono::duration __nsecs; - struct timespec tp; - if (0 != clock_gettime(CLOCK_REALTIME, &tp)) - __throw_system_error(errno, "clock_gettime(CLOCK_REALTIME) failed"); - return time_point(__secs(tp.tv_sec) + - chrono::duration_cast(__nsecs(tp.tv_nsec))); -#else - typedef chrono::duration __microsecs; - timeval tv; - gettimeofday(&tv, 0); - return time_point(__secs(tv.tv_sec) + __microsecs(tv.tv_usec)); -#endif // _LIBCPP_USE_CLOCK_GETTIME && CLOCK_REALTIME -} - -filesystem_error::~filesystem_error() {} - -void filesystem_error::__create_what(int __num_paths) { - const char* derived_what = system_error::what(); - __storage_->__what_ = [&]() -> string { - const char* p1 = path1().native().empty() ? "\"\"" : path1().c_str(); - const char* p2 = path2().native().empty() ? "\"\"" : path2().c_str(); - switch (__num_paths) { - default: - return detail::format_string("filesystem error: %s", derived_what); - case 1: - return detail::format_string("filesystem error: %s [%s]", derived_what, - p1); - case 2: - return detail::format_string("filesystem error: %s [%s] [%s]", - derived_what, p1, p2); - } - }(); -} - -static path __do_absolute(const path& p, path* cwd, error_code* ec) { - if (ec) - ec->clear(); - if (p.is_absolute()) - return p; - *cwd = __current_path(ec); - if (ec && *ec) - return {}; - return (*cwd) / p; -} - -path __absolute(const path& p, error_code* ec) { - path cwd; - return __do_absolute(p, &cwd, ec); -} - -path __canonical(path const& orig_p, error_code* ec) { - path cwd; - ErrorHandler err("canonical", ec, &orig_p, &cwd); - - path p = __do_absolute(orig_p, &cwd, ec); - char buff[PATH_MAX + 1]; - char* ret; - if ((ret = ::realpath(p.c_str(), buff)) == nullptr) - return err.report(capture_errno()); - return {ret}; -} - -void __copy(const path& from, const path& to, copy_options options, - error_code* ec) { - ErrorHandler err("copy", ec, &from, &to); - - const bool sym_status = bool( - options & (copy_options::create_symlinks | copy_options::skip_symlinks)); - - const bool sym_status2 = bool(options & copy_options::copy_symlinks); - - error_code m_ec1; - StatT f_st = {}; - const file_status f = sym_status || sym_status2 - ? detail::posix_lstat(from, f_st, &m_ec1) - : detail::posix_stat(from, f_st, &m_ec1); - if (m_ec1) - return err.report(m_ec1); - - StatT t_st = {}; - const file_status t = sym_status ? detail::posix_lstat(to, t_st, &m_ec1) - : detail::posix_stat(to, t_st, &m_ec1); - - if (not status_known(t)) - return err.report(m_ec1); - - if (!exists(f) || is_other(f) || is_other(t) || - (is_directory(f) && is_regular_file(t)) || - detail::stat_equivalent(f_st, t_st)) { - return err.report(errc::function_not_supported); - } - - if (ec) - ec->clear(); - - if (is_symlink(f)) { - if (bool(copy_options::skip_symlinks & options)) { - // do nothing - } else if (not exists(t)) { - __copy_symlink(from, to, ec); - } else { - return err.report(errc::file_exists); - } - return; - } else if (is_regular_file(f)) { - if (bool(copy_options::directories_only & options)) { - // do nothing - } else if (bool(copy_options::create_symlinks & options)) { - __create_symlink(from, to, ec); - } else if (bool(copy_options::create_hard_links & options)) { - __create_hard_link(from, to, ec); - } else if (is_directory(t)) { - __copy_file(from, to / from.filename(), options, ec); - } else { - __copy_file(from, to, options, ec); - } - return; - } else if (is_directory(f) && bool(copy_options::create_symlinks & options)) { - return err.report(errc::is_a_directory); - } else if (is_directory(f) && (bool(copy_options::recursive & options) || - copy_options::none == options)) { - - if (!exists(t)) { - // create directory to with attributes from 'from'. - __create_directory(to, from, ec); - if (ec && *ec) { - return; - } - } - directory_iterator it = - ec ? directory_iterator(from, *ec) : directory_iterator(from); - if (ec && *ec) { - return; - } - error_code m_ec2; - for (; it != directory_iterator(); it.increment(m_ec2)) { - if (m_ec2) { - return err.report(m_ec2); - } - __copy(it->path(), to / it->path().filename(), - options | copy_options::__in_recursive_copy, ec); - if (ec && *ec) { - return; - } - } - } -} - -namespace detail { -namespace { - -#ifdef _LIBCPP_USE_SENDFILE -bool copy_file_impl_sendfile(FileDescriptor& read_fd, FileDescriptor& write_fd, - error_code& ec) { - - size_t count = read_fd.get_stat().st_size; - do { - ssize_t res; - if ((res = ::sendfile(write_fd.fd, read_fd.fd, nullptr, count)) == -1) { - ec = capture_errno(); - return false; - } - count -= res; - } while (count > 0); - - ec.clear(); - - return true; -} -#elif defined(_LIBCPP_USE_COPYFILE) -bool copy_file_impl_copyfile(FileDescriptor& read_fd, FileDescriptor& write_fd, - error_code& ec) { - struct CopyFileState { - copyfile_state_t state; - CopyFileState() { state = copyfile_state_alloc(); } - ~CopyFileState() { copyfile_state_free(state); } - - private: - CopyFileState(CopyFileState const&) = delete; - CopyFileState& operator=(CopyFileState const&) = delete; - }; - - CopyFileState cfs; - if (fcopyfile(read_fd.fd, write_fd.fd, cfs.state, COPYFILE_DATA) < 0) { - ec = capture_errno(); - return false; - } - - ec.clear(); - return true; -} -#endif - -// Note: This function isn't guarded by ifdef's even though it may be unused -// in order to assure it still compiles. -__attribute__((unused)) bool copy_file_impl_default(FileDescriptor& read_fd, - FileDescriptor& write_fd, - error_code& ec) { - ifstream in; - in.__open(read_fd.fd, ios::binary); - if (!in.is_open()) { - // This assumes that __open didn't reset the error code. - ec = capture_errno(); - return false; - } - ofstream out; - out.__open(write_fd.fd, ios::binary); - if (!out.is_open()) { - ec = capture_errno(); - return false; - } - - if (in.good() && out.good()) { - using InIt = istreambuf_iterator; - using OutIt = ostreambuf_iterator; - InIt bin(in); - InIt ein; - OutIt bout(out); - copy(bin, ein, bout); - } - if (out.fail() || in.fail()) { - ec = make_error_code(errc::io_error); - return false; - } - - ec.clear(); - return true; -} - -bool copy_file_impl(FileDescriptor& from, FileDescriptor& to, error_code& ec) { -#if defined(_LIBCPP_USE_SENDFILE) - return copy_file_impl_sendfile(from, to, ec); -#elif defined(_LIBCPP_USE_COPYFILE) - return copy_file_impl_copyfile(from, to, ec); -#else - return copy_file_impl_default(from, to, ec); -#endif -} - -} // namespace -} // namespace detail - -bool __copy_file(const path& from, const path& to, copy_options options, - error_code* ec) { - using detail::FileDescriptor; - ErrorHandler err("copy_file", ec, &to, &from); - - error_code m_ec; - FileDescriptor from_fd = - FileDescriptor::create_with_status(&from, m_ec, O_RDONLY | O_NONBLOCK); - if (m_ec) - return err.report(m_ec); - - auto from_st = from_fd.get_status(); - StatT const& from_stat = from_fd.get_stat(); - if (!is_regular_file(from_st)) { - if (not m_ec) - m_ec = make_error_code(errc::not_supported); - return err.report(m_ec); - } - - const bool skip_existing = bool(copy_options::skip_existing & options); - const bool update_existing = bool(copy_options::update_existing & options); - const bool overwrite_existing = - bool(copy_options::overwrite_existing & options); - - StatT to_stat_path; - file_status to_st = detail::posix_stat(to, to_stat_path, &m_ec); - if (!status_known(to_st)) - return err.report(m_ec); - - const bool to_exists = exists(to_st); - if (to_exists && !is_regular_file(to_st)) - return err.report(errc::not_supported); - - if (to_exists && detail::stat_equivalent(from_stat, to_stat_path)) - return err.report(errc::file_exists); - - if (to_exists && skip_existing) - return false; - - bool ShouldCopy = [&]() { - if (to_exists && update_existing) { - auto from_time = detail::extract_mtime(from_stat); - auto to_time = detail::extract_mtime(to_stat_path); - if (from_time.tv_sec < to_time.tv_sec) - return false; - if (from_time.tv_sec == to_time.tv_sec && - from_time.tv_nsec <= to_time.tv_nsec) - return false; - return true; - } - if (!to_exists || overwrite_existing) - return true; - return err.report(errc::file_exists); - }(); - if (!ShouldCopy) - return false; - - // Don't truncate right away. We may not be opening the file we originally - // looked at; we'll check this later. - int to_open_flags = O_WRONLY; - if (!to_exists) - to_open_flags |= O_CREAT; - FileDescriptor to_fd = FileDescriptor::create_with_status( - &to, m_ec, to_open_flags, from_stat.st_mode); - if (m_ec) - return err.report(m_ec); - - if (to_exists) { - // Check that the file we initially stat'ed is equivalent to the one - // we opened. - // FIXME: report this better. - if (!detail::stat_equivalent(to_stat_path, to_fd.get_stat())) - return err.report(errc::bad_file_descriptor); - - // Set the permissions and truncate the file we opened. - if (detail::posix_fchmod(to_fd, from_stat, m_ec)) - return err.report(m_ec); - if (detail::posix_ftruncate(to_fd, 0, m_ec)) - return err.report(m_ec); - } - - if (!copy_file_impl(from_fd, to_fd, m_ec)) { - // FIXME: Remove the dest file if we failed, and it didn't exist previously. - return err.report(m_ec); - } - - return true; -} - -void __copy_symlink(const path& existing_symlink, const path& new_symlink, - error_code* ec) { - const path real_path(__read_symlink(existing_symlink, ec)); - if (ec && *ec) { - return; - } - // NOTE: proposal says you should detect if you should call - // create_symlink or create_directory_symlink. I don't think this - // is needed with POSIX - __create_symlink(real_path, new_symlink, ec); -} - -bool __create_directories(const path& p, error_code* ec) { - ErrorHandler err("create_directories", ec, &p); - - error_code m_ec; - auto const st = detail::posix_stat(p, &m_ec); - if (!status_known(st)) - return err.report(m_ec); - else if (is_directory(st)) - return false; - else if (exists(st)) - return err.report(errc::file_exists); - - const path parent = p.parent_path(); - if (!parent.empty()) { - const file_status parent_st = status(parent, m_ec); - if (not status_known(parent_st)) - return err.report(m_ec); - if (not exists(parent_st)) { - __create_directories(parent, ec); - if (ec && *ec) { - return false; - } - } - } - return __create_directory(p, ec); -} - -bool __create_directory(const path& p, error_code* ec) { - ErrorHandler err("create_directory", ec, &p); - - if (::mkdir(p.c_str(), static_cast(perms::all)) == 0) - return true; - if (errno != EEXIST) - err.report(capture_errno()); - return false; -} - -bool __create_directory(path const& p, path const& attributes, error_code* ec) { - ErrorHandler err("create_directory", ec, &p, &attributes); - - StatT attr_stat; - error_code mec; - auto st = detail::posix_stat(attributes, attr_stat, &mec); - if (!status_known(st)) - return err.report(mec); - if (!is_directory(st)) - return err.report(errc::not_a_directory, - "the specified attribute path is invalid"); - - if (::mkdir(p.c_str(), attr_stat.st_mode) == 0) - return true; - if (errno != EEXIST) - err.report(capture_errno()); - return false; -} - -void __create_directory_symlink(path const& from, path const& to, - error_code* ec) { - ErrorHandler err("create_directory_symlink", ec, &from, &to); - if (::symlink(from.c_str(), to.c_str()) != 0) - return err.report(capture_errno()); -} - -void __create_hard_link(const path& from, const path& to, error_code* ec) { - ErrorHandler err("create_hard_link", ec, &from, &to); - if (::link(from.c_str(), to.c_str()) == -1) - return err.report(capture_errno()); -} - -void __create_symlink(path const& from, path const& to, error_code* ec) { - ErrorHandler err("create_symlink", ec, &from, &to); - if (::symlink(from.c_str(), to.c_str()) == -1) - return err.report(capture_errno()); -} - -path __current_path(error_code* ec) { - ErrorHandler err("current_path", ec); - - auto size = ::pathconf(".", _PC_PATH_MAX); - _LIBCPP_ASSERT(size >= 0, "pathconf returned a 0 as max size"); - - auto buff = unique_ptr(new char[size + 1]); - char* ret; - if ((ret = ::getcwd(buff.get(), static_cast(size))) == nullptr) - return err.report(capture_errno(), "call to getcwd failed"); - - return {buff.get()}; -} - -void __current_path(const path& p, error_code* ec) { - ErrorHandler err("current_path", ec, &p); - if (::chdir(p.c_str()) == -1) - err.report(capture_errno()); -} - -bool __equivalent(const path& p1, const path& p2, error_code* ec) { - ErrorHandler err("equivalent", ec, &p1, &p2); - - error_code ec1, ec2; - StatT st1 = {}, st2 = {}; - auto s1 = detail::posix_stat(p1.native(), st1, &ec1); - if (!exists(s1)) - return err.report(errc::not_supported); - auto s2 = detail::posix_stat(p2.native(), st2, &ec2); - if (!exists(s2)) - return err.report(errc::not_supported); - - return detail::stat_equivalent(st1, st2); -} - -uintmax_t __file_size(const path& p, error_code* ec) { - ErrorHandler err("file_size", ec, &p); - - error_code m_ec; - StatT st; - file_status fst = detail::posix_stat(p, st, &m_ec); - if (!exists(fst) || !is_regular_file(fst)) { - errc error_kind = - is_directory(fst) ? errc::is_a_directory : errc::not_supported; - if (!m_ec) - m_ec = make_error_code(error_kind); - return err.report(m_ec); - } - // is_regular_file(p) == true - return static_cast(st.st_size); -} - -uintmax_t __hard_link_count(const path& p, error_code* ec) { - ErrorHandler err("hard_link_count", ec, &p); - - error_code m_ec; - StatT st; - detail::posix_stat(p, st, &m_ec); - if (m_ec) - return err.report(m_ec); - return static_cast(st.st_nlink); -} - -bool __fs_is_empty(const path& p, error_code* ec) { - ErrorHandler err("is_empty", ec, &p); - - error_code m_ec; - StatT pst; - auto st = detail::posix_stat(p, pst, &m_ec); - if (m_ec) - return err.report(m_ec); - else if (!is_directory(st) && !is_regular_file(st)) - return err.report(errc::not_supported); - else if (is_directory(st)) { - auto it = ec ? directory_iterator(p, *ec) : directory_iterator(p); - if (ec && *ec) - return false; - return it == directory_iterator{}; - } else if (is_regular_file(st)) - return static_cast(pst.st_size) == 0; - - _LIBCPP_UNREACHABLE(); -} - -static file_time_type __extract_last_write_time(const path& p, const StatT& st, - error_code* ec) { - using detail::fs_time; - ErrorHandler err("last_write_time", ec, &p); - - auto ts = detail::extract_mtime(st); - if (!fs_time::is_representable(ts)) - return err.report(errc::value_too_large); - - return fs_time::convert_from_timespec(ts); -} - -file_time_type __last_write_time(const path& p, error_code* ec) { - using namespace chrono; - ErrorHandler err("last_write_time", ec, &p); - - error_code m_ec; - StatT st; - detail::posix_stat(p, st, &m_ec); - if (m_ec) - return err.report(m_ec); - return __extract_last_write_time(p, st, ec); -} - -void __last_write_time(const path& p, file_time_type new_time, error_code* ec) { - using detail::fs_time; - ErrorHandler err("last_write_time", ec, &p); - - error_code m_ec; - array tbuf; -#if !defined(_LIBCPP_USE_UTIMENSAT) - // This implementation has a race condition between determining the - // last access time and attempting to set it to the same value using - // ::utimes - StatT st; - file_status fst = detail::posix_stat(p, st, &m_ec); - if (m_ec) - return err.report(m_ec); - tbuf[0] = detail::extract_atime(st); -#else - tbuf[0].tv_sec = 0; - tbuf[0].tv_nsec = UTIME_OMIT; -#endif - if (!fs_time::convert_to_timespec(tbuf[1], new_time)) - return err.report(errc::value_too_large); - - detail::set_file_times(p, tbuf, m_ec); - if (m_ec) - return err.report(m_ec); -} - -void __permissions(const path& p, perms prms, perm_options opts, - error_code* ec) { - ErrorHandler err("permissions", ec, &p); - - auto has_opt = [&](perm_options o) { return bool(o & opts); }; - const bool resolve_symlinks = !has_opt(perm_options::nofollow); - const bool add_perms = has_opt(perm_options::add); - const bool remove_perms = has_opt(perm_options::remove); - _LIBCPP_ASSERT( - (add_perms + remove_perms + has_opt(perm_options::replace)) == 1, - "One and only one of the perm_options constants replace, add, or remove " - "is present in opts"); - - bool set_sym_perms = false; - prms &= perms::mask; - if (!resolve_symlinks || (add_perms || remove_perms)) { - error_code m_ec; - file_status st = resolve_symlinks ? detail::posix_stat(p, &m_ec) - : detail::posix_lstat(p, &m_ec); - set_sym_perms = is_symlink(st); - if (m_ec) - return err.report(m_ec); - _LIBCPP_ASSERT(st.permissions() != perms::unknown, - "Permissions unexpectedly unknown"); - if (add_perms) - prms |= st.permissions(); - else if (remove_perms) - prms = st.permissions() & ~prms; - } - const auto real_perms = detail::posix_convert_perms(prms); - -#if defined(AT_SYMLINK_NOFOLLOW) && defined(AT_FDCWD) - const int flags = set_sym_perms ? AT_SYMLINK_NOFOLLOW : 0; - if (::fchmodat(AT_FDCWD, p.c_str(), real_perms, flags) == -1) { - return err.report(capture_errno()); - } -#else - if (set_sym_perms) - return err.report(errc::operation_not_supported); - if (::chmod(p.c_str(), real_perms) == -1) { - return err.report(capture_errno()); - } -#endif -} - -path __read_symlink(const path& p, error_code* ec) { - ErrorHandler err("read_symlink", ec, &p); - - char buff[PATH_MAX + 1]; - error_code m_ec; - ::ssize_t ret; - if ((ret = ::readlink(p.c_str(), buff, PATH_MAX)) == -1) { - return err.report(capture_errno()); - } - _LIBCPP_ASSERT(ret <= PATH_MAX, "TODO"); - _LIBCPP_ASSERT(ret > 0, "TODO"); - buff[ret] = 0; - return {buff}; -} - -bool __remove(const path& p, error_code* ec) { - ErrorHandler err("remove", ec, &p); - if (::remove(p.c_str()) == -1) { - if (errno != ENOENT) - err.report(capture_errno()); - return false; - } - return true; -} - -namespace { - -uintmax_t remove_all_impl(path const& p, error_code& ec) { - const auto npos = static_cast(-1); - const file_status st = __symlink_status(p, &ec); - if (ec) - return npos; - uintmax_t count = 1; - if (is_directory(st)) { - for (directory_iterator it(p, ec); !ec && it != directory_iterator(); - it.increment(ec)) { - auto other_count = remove_all_impl(it->path(), ec); - if (ec) - return npos; - count += other_count; - } - if (ec) - return npos; - } - if (!__remove(p, &ec)) - return npos; - return count; -} - -} // end namespace - -uintmax_t __remove_all(const path& p, error_code* ec) { - ErrorHandler err("remove_all", ec, &p); - - error_code mec; - auto count = remove_all_impl(p, mec); - if (mec) { - if (mec == errc::no_such_file_or_directory) - return 0; - return err.report(mec); - } - return count; -} - -void __rename(const path& from, const path& to, error_code* ec) { - ErrorHandler err("rename", ec, &from, &to); - if (::rename(from.c_str(), to.c_str()) == -1) - err.report(capture_errno()); -} - -void __resize_file(const path& p, uintmax_t size, error_code* ec) { - ErrorHandler err("resize_file", ec, &p); - if (::truncate(p.c_str(), static_cast< ::off_t>(size)) == -1) - return err.report(capture_errno()); -} - -space_info __space(const path& p, error_code* ec) { - ErrorHandler err("space", ec, &p); - space_info si; - struct statvfs m_svfs = {}; - if (::statvfs(p.c_str(), &m_svfs) == -1) { - err.report(capture_errno()); - si.capacity = si.free = si.available = static_cast(-1); - return si; - } - // Multiply with overflow checking. - auto do_mult = [&](uintmax_t& out, uintmax_t other) { - out = other * m_svfs.f_frsize; - if (other == 0 || out / other != m_svfs.f_frsize) - out = static_cast(-1); - }; - do_mult(si.capacity, m_svfs.f_blocks); - do_mult(si.free, m_svfs.f_bfree); - do_mult(si.available, m_svfs.f_bavail); - return si; -} - -file_status __status(const path& p, error_code* ec) { - return detail::posix_stat(p, ec); -} - -file_status __symlink_status(const path& p, error_code* ec) { - return detail::posix_lstat(p, ec); -} - -path __temp_directory_path(error_code* ec) { - ErrorHandler err("temp_directory_path", ec); - - const char* env_paths[] = {"TMPDIR", "TMP", "TEMP", "TEMPDIR"}; - const char* ret = nullptr; - - for (auto& ep : env_paths) - if ((ret = getenv(ep))) - break; - if (ret == nullptr) - ret = "/tmp"; - - path p(ret); - error_code m_ec; - file_status st = detail::posix_stat(p, &m_ec); - if (!status_known(st)) - return err.report(m_ec, "cannot access path \"%s\"", p); - - if (!exists(st) || !is_directory(st)) - return err.report(errc::not_a_directory, "path \"%s\" is not a directory", - p); - - return p; -} - -path __weakly_canonical(const path& p, error_code* ec) { - ErrorHandler err("weakly_canonical", ec, &p); - - if (p.empty()) - return __canonical("", ec); - - path result; - path tmp; - tmp.__reserve(p.native().size()); - auto PP = PathParser::CreateEnd(p.native()); - --PP; - vector DNEParts; - - while (PP.State != PathParser::PS_BeforeBegin) { - tmp.assign(createView(p.native().data(), &PP.RawEntry.back())); - error_code m_ec; - file_status st = __status(tmp, &m_ec); - if (!status_known(st)) { - return err.report(m_ec); - } else if (exists(st)) { - result = __canonical(tmp, ec); - break; - } - DNEParts.push_back(*PP); - --PP; - } - if (PP.State == PathParser::PS_BeforeBegin) - result = __canonical("", ec); - if (ec) - ec->clear(); - if (DNEParts.empty()) - return result; - for (auto It = DNEParts.rbegin(); It != DNEParts.rend(); ++It) - result /= *It; - return result.lexically_normal(); -} - -/////////////////////////////////////////////////////////////////////////////// -// path definitions -/////////////////////////////////////////////////////////////////////////////// - -constexpr path::value_type path::preferred_separator; - -path& path::replace_extension(path const& replacement) { - path p = extension(); - if (not p.empty()) { - __pn_.erase(__pn_.size() - p.native().size()); - } - if (!replacement.empty()) { - if (replacement.native()[0] != '.') { - __pn_ += "."; - } - __pn_.append(replacement.__pn_); - } - return *this; -} - -/////////////////////////////////////////////////////////////////////////////// -// path.decompose - -string_view_t path::__root_name() const { - auto PP = PathParser::CreateBegin(__pn_); - if (PP.State == PathParser::PS_InRootName) - return *PP; - return {}; -} - -string_view_t path::__root_directory() const { - auto PP = PathParser::CreateBegin(__pn_); - if (PP.State == PathParser::PS_InRootName) - ++PP; - if (PP.State == PathParser::PS_InRootDir) - return *PP; - return {}; -} - -string_view_t path::__root_path_raw() const { - auto PP = PathParser::CreateBegin(__pn_); - if (PP.State == PathParser::PS_InRootName) { - auto NextCh = PP.peek(); - if (NextCh && *NextCh == '/') { - ++PP; - return createView(__pn_.data(), &PP.RawEntry.back()); - } - return PP.RawEntry; - } - if (PP.State == PathParser::PS_InRootDir) - return *PP; - return {}; -} - -static bool ConsumeRootName(PathParser *PP) { - static_assert(PathParser::PS_BeforeBegin == 1 && - PathParser::PS_InRootName == 2, - "Values for enums are incorrect"); - while (PP->State <= PathParser::PS_InRootName) - ++(*PP); - return PP->State == PathParser::PS_AtEnd; -} - -static bool ConsumeRootDir(PathParser* PP) { - static_assert(PathParser::PS_BeforeBegin == 1 && - PathParser::PS_InRootName == 2 && - PathParser::PS_InRootDir == 3, "Values for enums are incorrect"); - while (PP->State <= PathParser::PS_InRootDir) - ++(*PP); - return PP->State == PathParser::PS_AtEnd; -} - -string_view_t path::__relative_path() const { - auto PP = PathParser::CreateBegin(__pn_); - if (ConsumeRootDir(&PP)) - return {}; - return createView(PP.RawEntry.data(), &__pn_.back()); -} - -string_view_t path::__parent_path() const { - if (empty()) - return {}; - // Determine if we have a root path but not a relative path. In that case - // return *this. - { - auto PP = PathParser::CreateBegin(__pn_); - if (ConsumeRootDir(&PP)) - return __pn_; - } - // Otherwise remove a single element from the end of the path, and return - // a string representing that path - { - auto PP = PathParser::CreateEnd(__pn_); - --PP; - if (PP.RawEntry.data() == __pn_.data()) - return {}; - --PP; - return createView(__pn_.data(), &PP.RawEntry.back()); - } -} - -string_view_t path::__filename() const { - if (empty()) - return {}; - { - PathParser PP = PathParser::CreateBegin(__pn_); - if (ConsumeRootDir(&PP)) - return {}; - } - return *(--PathParser::CreateEnd(__pn_)); -} - -string_view_t path::__stem() const { - return parser::separate_filename(__filename()).first; -} - -string_view_t path::__extension() const { - return parser::separate_filename(__filename()).second; -} - -//////////////////////////////////////////////////////////////////////////// -// path.gen - -enum PathPartKind : unsigned char { - PK_None, - PK_RootSep, - PK_Filename, - PK_Dot, - PK_DotDot, - PK_TrailingSep -}; - -static PathPartKind ClassifyPathPart(string_view_t Part) { - if (Part.empty()) - return PK_TrailingSep; - if (Part == ".") - return PK_Dot; - if (Part == "..") - return PK_DotDot; - if (Part == "/") - return PK_RootSep; - return PK_Filename; -} - -path path::lexically_normal() const { - if (__pn_.empty()) - return *this; - - using PartKindPair = pair; - vector Parts; - // Guess as to how many elements the path has to avoid reallocating. - Parts.reserve(32); - - // Track the total size of the parts as we collect them. This allows the - // resulting path to reserve the correct amount of memory. - size_t NewPathSize = 0; - auto AddPart = [&](PathPartKind K, string_view_t P) { - NewPathSize += P.size(); - Parts.emplace_back(P, K); - }; - auto LastPartKind = [&]() { - if (Parts.empty()) - return PK_None; - return Parts.back().second; - }; - - bool MaybeNeedTrailingSep = false; - // Build a stack containing the remaining elements of the path, popping off - // elements which occur before a '..' entry. - for (auto PP = PathParser::CreateBegin(__pn_); PP; ++PP) { - auto Part = *PP; - PathPartKind Kind = ClassifyPathPart(Part); - switch (Kind) { - case PK_Filename: - case PK_RootSep: { - // Add all non-dot and non-dot-dot elements to the stack of elements. - AddPart(Kind, Part); - MaybeNeedTrailingSep = false; - break; - } - case PK_DotDot: { - // Only push a ".." element if there are no elements preceding the "..", - // or if the preceding element is itself "..". - auto LastKind = LastPartKind(); - if (LastKind == PK_Filename) { - NewPathSize -= Parts.back().first.size(); - Parts.pop_back(); - } else if (LastKind != PK_RootSep) - AddPart(PK_DotDot, ".."); - MaybeNeedTrailingSep = LastKind == PK_Filename; - break; - } - case PK_Dot: - case PK_TrailingSep: { - MaybeNeedTrailingSep = true; - break; - } - case PK_None: - _LIBCPP_UNREACHABLE(); - } - } - // [fs.path.generic]p6.8: If the path is empty, add a dot. - if (Parts.empty()) - return "."; - - // [fs.path.generic]p6.7: If the last filename is dot-dot, remove any - // trailing directory-separator. - bool NeedTrailingSep = MaybeNeedTrailingSep && LastPartKind() == PK_Filename; - - path Result; - Result.__pn_.reserve(Parts.size() + NewPathSize + NeedTrailingSep); - for (auto& PK : Parts) - Result /= PK.first; - - if (NeedTrailingSep) - Result /= ""; - - return Result; -} - -static int DetermineLexicalElementCount(PathParser PP) { - int Count = 0; - for (; PP; ++PP) { - auto Elem = *PP; - if (Elem == "..") - --Count; - else if (Elem != "." && Elem != "") - ++Count; - } - return Count; -} - -path path::lexically_relative(const path& base) const { - { // perform root-name/root-directory mismatch checks - auto PP = PathParser::CreateBegin(__pn_); - auto PPBase = PathParser::CreateBegin(base.__pn_); - auto CheckIterMismatchAtBase = [&]() { - return PP.State != PPBase.State && - (PP.inRootPath() || PPBase.inRootPath()); - }; - if (PP.inRootName() && PPBase.inRootName()) { - if (*PP != *PPBase) - return {}; - } else if (CheckIterMismatchAtBase()) - return {}; - - if (PP.inRootPath()) - ++PP; - if (PPBase.inRootPath()) - ++PPBase; - if (CheckIterMismatchAtBase()) - return {}; - } - - // Find the first mismatching element - auto PP = PathParser::CreateBegin(__pn_); - auto PPBase = PathParser::CreateBegin(base.__pn_); - while (PP && PPBase && PP.State == PPBase.State && *PP == *PPBase) { - ++PP; - ++PPBase; - } - - // If there is no mismatch, return ".". - if (!PP && !PPBase) - return "."; - - // Otherwise, determine the number of elements, 'n', which are not dot or - // dot-dot minus the number of dot-dot elements. - int ElemCount = DetermineLexicalElementCount(PPBase); - if (ElemCount < 0) - return {}; - - // if n == 0 and (a == end() || a->empty()), returns path("."); otherwise - if (ElemCount == 0 && (PP.atEnd() || *PP == "")) - return "."; - - // return a path constructed with 'n' dot-dot elements, followed by the - // elements of '*this' after the mismatch. - path Result; - // FIXME: Reserve enough room in Result that it won't have to re-allocate. - while (ElemCount--) - Result /= ".."; - for (; PP; ++PP) - Result /= *PP; - return Result; -} - -//////////////////////////////////////////////////////////////////////////// -// path.comparisons -static int CompareRootName(PathParser *LHS, PathParser *RHS) { - if (!LHS->inRootName() && !RHS->inRootName()) - return 0; - - auto GetRootName = [](PathParser *Parser) -> string_view_t { - return Parser->inRootName() ? **Parser : ""; - }; - int res = GetRootName(LHS).compare(GetRootName(RHS)); - ConsumeRootName(LHS); - ConsumeRootName(RHS); - return res; -} - -static int CompareRootDir(PathParser *LHS, PathParser *RHS) { - if (!LHS->inRootDir() && RHS->inRootDir()) - return -1; - else if (LHS->inRootDir() && !RHS->inRootDir()) - return 1; - else { - ConsumeRootDir(LHS); - ConsumeRootDir(RHS); - return 0; - } -} - -static int CompareRelative(PathParser *LHSPtr, PathParser *RHSPtr) { - auto &LHS = *LHSPtr; - auto &RHS = *RHSPtr; - - int res; - while (LHS && RHS) { - if ((res = (*LHS).compare(*RHS)) != 0) - return res; - ++LHS; - ++RHS; - } - return 0; -} - -static int CompareEndState(PathParser *LHS, PathParser *RHS) { - if (LHS->atEnd() && !RHS->atEnd()) - return -1; - else if (!LHS->atEnd() && RHS->atEnd()) - return 1; - return 0; -} - -int path::__compare(string_view_t __s) const { - auto LHS = PathParser::CreateBegin(__pn_); - auto RHS = PathParser::CreateBegin(__s); - int res; - - if ((res = CompareRootName(&LHS, &RHS)) != 0) - return res; - - if ((res = CompareRootDir(&LHS, &RHS)) != 0) - return res; - - if ((res = CompareRelative(&LHS, &RHS)) != 0) - return res; - - return CompareEndState(&LHS, &RHS); -} - -//////////////////////////////////////////////////////////////////////////// -// path.nonmembers -size_t hash_value(const path& __p) noexcept { - auto PP = PathParser::CreateBegin(__p.native()); - size_t hash_value = 0; - hash hasher; - while (PP) { - hash_value = __hash_combine(hash_value, hasher(*PP)); - ++PP; - } - return hash_value; -} - -//////////////////////////////////////////////////////////////////////////// -// path.itr -path::iterator path::begin() const { - auto PP = PathParser::CreateBegin(__pn_); - iterator it; - it.__path_ptr_ = this; - it.__state_ = static_cast(PP.State); - it.__entry_ = PP.RawEntry; - it.__stashed_elem_.__assign_view(*PP); - return it; -} - -path::iterator path::end() const { - iterator it{}; - it.__state_ = path::iterator::_AtEnd; - it.__path_ptr_ = this; - return it; -} - -path::iterator& path::iterator::__increment() { - PathParser PP(__path_ptr_->native(), __entry_, __state_); - ++PP; - __state_ = static_cast<_ParserState>(PP.State); - __entry_ = PP.RawEntry; - __stashed_elem_.__assign_view(*PP); - return *this; -} - -path::iterator& path::iterator::__decrement() { - PathParser PP(__path_ptr_->native(), __entry_, __state_); - --PP; - __state_ = static_cast<_ParserState>(PP.State); - __entry_ = PP.RawEntry; - __stashed_elem_.__assign_view(*PP); - return *this; -} - -/////////////////////////////////////////////////////////////////////////////// -// directory entry definitions -/////////////////////////////////////////////////////////////////////////////// - -#ifndef _LIBCPP_WIN32API -error_code directory_entry::__do_refresh() noexcept { - __data_.__reset(); - error_code failure_ec; - - StatT full_st; - file_status st = detail::posix_lstat(__p_, full_st, &failure_ec); - if (!status_known(st)) { - __data_.__reset(); - return failure_ec; - } - - if (!_VSTD_FS::exists(st) || !_VSTD_FS::is_symlink(st)) { - __data_.__cache_type_ = directory_entry::_RefreshNonSymlink; - __data_.__type_ = st.type(); - __data_.__non_sym_perms_ = st.permissions(); - } else { // we have a symlink - __data_.__sym_perms_ = st.permissions(); - // Get the information about the linked entity. - // Ignore errors from stat, since we don't want errors regarding symlink - // resolution to be reported to the user. - error_code ignored_ec; - st = detail::posix_stat(__p_, full_st, &ignored_ec); - - __data_.__type_ = st.type(); - __data_.__non_sym_perms_ = st.permissions(); - - // If we failed to resolve the link, then only partially populate the - // cache. - if (!status_known(st)) { - __data_.__cache_type_ = directory_entry::_RefreshSymlinkUnresolved; - return error_code{}; - } - // Otherwise, we resolved the link, potentially as not existing. - // That's OK. - __data_.__cache_type_ = directory_entry::_RefreshSymlink; - } - - if (_VSTD_FS::is_regular_file(st)) - __data_.__size_ = static_cast(full_st.st_size); - - if (_VSTD_FS::exists(st)) { - __data_.__nlink_ = static_cast(full_st.st_nlink); - - // Attempt to extract the mtime, and fail if it's not representable using - // file_time_type. For now we ignore the error, as we'll report it when - // the value is actually used. - error_code ignored_ec; - __data_.__write_time_ = - __extract_last_write_time(__p_, full_st, &ignored_ec); - } - - return failure_ec; -} -#else -error_code directory_entry::__do_refresh() noexcept { - __data_.__reset(); - error_code failure_ec; - - file_status st = _VSTD_FS::symlink_status(__p_, failure_ec); - if (!status_known(st)) { - __data_.__reset(); - return failure_ec; - } - - if (!_VSTD_FS::exists(st) || !_VSTD_FS::is_symlink(st)) { - __data_.__cache_type_ = directory_entry::_RefreshNonSymlink; - __data_.__type_ = st.type(); - __data_.__non_sym_perms_ = st.permissions(); - } else { // we have a symlink - __data_.__sym_perms_ = st.permissions(); - // Get the information about the linked entity. - // Ignore errors from stat, since we don't want errors regarding symlink - // resolution to be reported to the user. - error_code ignored_ec; - st = _VSTD_FS::status(__p_, ignored_ec); - - __data_.__type_ = st.type(); - __data_.__non_sym_perms_ = st.permissions(); - - // If we failed to resolve the link, then only partially populate the - // cache. - if (!status_known(st)) { - __data_.__cache_type_ = directory_entry::_RefreshSymlinkUnresolved; - return error_code{}; - } - __data_.__cache_type_ = directory_entry::_RefreshSymlink; - } - - // FIXME: This is currently broken, and the implementation only a placeholder. - // We need to cache last_write_time, file_size, and hard_link_count here before - // the implementation actually works. - - return failure_ec; -} -#endif - -#ifndef _LIBAUTO_UNDEF_VSTD_FS -#pragma pop_macro("_VSTD_FS") -#else -#undef _VSTD -#undef _LIBAUTO_UNDEF_VSTD_FS -#endif -} // namespace android::hardware::automotive::filesystem -/* clang-format on */ - -#endif // defined(_LIBCPP_VERSION) && _LIBCPP_VERSION <= 8000