// -*- C++ -*-
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCPP___FILESYSTEM_DIRECTORY_ENTRY_H
#define _LIBCPP___FILESYSTEM_DIRECTORY_ENTRY_H
#include <__chrono/time_point.h>
#include <__compare/ordering.h>
#include <__config>
#include <__filesystem/file_status.h>
#include <__filesystem/file_time_type.h>
#include <__filesystem/file_type.h>
#include <__filesystem/filesystem_error.h>
#include <__filesystem/operations.h>
#include <__filesystem/path.h>
#include <__filesystem/perms.h>
#include <__fwd/ostream.h>
#include <__system_error/errc.h>
#include <__system_error/error_code.h>
#include <__utility/move.h>
#include <__utility/unreachable.h>
#include <cstdint>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
#if _LIBCPP_STD_VER >= 17 && !defined(_LIBCPP_HAS_NO_FILESYSTEM)
_LIBCPP_BEGIN_NAMESPACE_FILESYSTEM
_LIBCPP_AVAILABILITY_FILESYSTEM_LIBRARY_PUSH
class directory_entry {
typedef filesystem::path _Path;
public:
// constructors and destructors
_LIBCPP_HIDE_FROM_ABI directory_entry() noexcept = default;
_LIBCPP_HIDE_FROM_ABI directory_entry(directory_entry const&) = default;
_LIBCPP_HIDE_FROM_ABI directory_entry(directory_entry&&) noexcept = default;
_LIBCPP_HIDE_FROM_ABI explicit directory_entry(_Path const& __p) : __p_(__p) {
error_code __ec;
__refresh(&__ec);
}
_LIBCPP_HIDE_FROM_ABI directory_entry(_Path const& __p, error_code& __ec) : __p_(__p) { __refresh(&__ec); }
_LIBCPP_HIDE_FROM_ABI ~directory_entry() {}
_LIBCPP_HIDE_FROM_ABI directory_entry& operator=(directory_entry const&) = default;
_LIBCPP_HIDE_FROM_ABI directory_entry& operator=(directory_entry&&) noexcept = default;
_LIBCPP_HIDE_FROM_ABI void assign(_Path const& __p) {
__p_ = __p;
error_code __ec;
__refresh(&__ec);
}
_LIBCPP_HIDE_FROM_ABI void assign(_Path const& __p, error_code& __ec) {
__p_ = __p;
__refresh(&__ec);
}
_LIBCPP_HIDE_FROM_ABI void replace_filename(_Path const& __p) {
__p_.replace_filename(__p);
error_code __ec;
__refresh(&__ec);
}
_LIBCPP_HIDE_FROM_ABI void replace_filename(_Path const& __p, error_code& __ec) {
__p_ = __p_.parent_path() / __p;
__refresh(&__ec);
}
_LIBCPP_HIDE_FROM_ABI void refresh() { __refresh(); }
_LIBCPP_HIDE_FROM_ABI void refresh(error_code& __ec) noexcept { __refresh(&__ec); }
_LIBCPP_HIDE_FROM_ABI _Path const& path() const noexcept { return __p_; }
_LIBCPP_HIDE_FROM_ABI operator const _Path&() const noexcept { return __p_; }
_LIBCPP_HIDE_FROM_ABI bool exists() const { return filesystem::exists(file_status{__get_ft()}); }
_LIBCPP_HIDE_FROM_ABI bool exists(error_code& __ec) const noexcept {
return filesystem::exists(file_status{__get_ft(&__ec)});
}
_LIBCPP_HIDE_FROM_ABI bool is_block_file() const { return __get_ft() == file_type::block; }
_LIBCPP_HIDE_FROM_ABI bool is_block_file(error_code& __ec) const noexcept {
return __get_ft(&__ec) == file_type::block;
}
_LIBCPP_HIDE_FROM_ABI bool is_character_file() const { return __get_ft() == file_type::character; }
_LIBCPP_HIDE_FROM_ABI bool is_character_file(error_code& __ec) const noexcept {
return __get_ft(&__ec) == file_type::character;
}
_LIBCPP_HIDE_FROM_ABI bool is_directory() const { return __get_ft() == file_type::directory; }
_LIBCPP_HIDE_FROM_ABI bool is_directory(error_code& __ec) const noexcept {
return __get_ft(&__ec) == file_type::directory;
}
_LIBCPP_HIDE_FROM_ABI bool is_fifo() const { return __get_ft() == file_type::fifo; }
_LIBCPP_HIDE_FROM_ABI bool is_fifo(error_code& __ec) const noexcept { return __get_ft(&__ec) == file_type::fifo; }
_LIBCPP_HIDE_FROM_ABI bool is_other() const { return filesystem::is_other(file_status{__get_ft()}); }
_LIBCPP_HIDE_FROM_ABI bool is_other(error_code& __ec) const noexcept {
return filesystem::is_other(file_status{__get_ft(&__ec)});
}
_LIBCPP_HIDE_FROM_ABI bool is_regular_file() const { return __get_ft() == file_type::regular; }
_LIBCPP_HIDE_FROM_ABI bool is_regular_file(error_code& __ec) const noexcept {
return __get_ft(&__ec) == file_type::regular;
}
_LIBCPP_HIDE_FROM_ABI bool is_socket() const { return __get_ft() == file_type::socket; }
_LIBCPP_HIDE_FROM_ABI bool is_socket(error_code& __ec) const noexcept { return __get_ft(&__ec) == file_type::socket; }
_LIBCPP_HIDE_FROM_ABI bool is_symlink() const { return __get_sym_ft() == file_type::symlink; }
_LIBCPP_HIDE_FROM_ABI bool is_symlink(error_code& __ec) const noexcept {
return __get_sym_ft(&__ec) == file_type::symlink;
}
_LIBCPP_HIDE_FROM_ABI uintmax_t file_size() const { return __get_size(); }
_LIBCPP_HIDE_FROM_ABI uintmax_t file_size(error_code& __ec) const noexcept { return __get_size(&__ec); }
_LIBCPP_HIDE_FROM_ABI uintmax_t hard_link_count() const { return __get_nlink(); }
_LIBCPP_HIDE_FROM_ABI uintmax_t hard_link_count(error_code& __ec) const noexcept { return __get_nlink(&__ec); }
_LIBCPP_HIDE_FROM_ABI file_time_type last_write_time() const { return __get_write_time(); }
_LIBCPP_HIDE_FROM_ABI file_time_type last_write_time(error_code& __ec) const noexcept {
return __get_write_time(&__ec);
}
_LIBCPP_HIDE_FROM_ABI file_status status() const { return __get_status(); }
_LIBCPP_HIDE_FROM_ABI file_status status(error_code& __ec) const noexcept { return __get_status(&__ec); }
_LIBCPP_HIDE_FROM_ABI file_status symlink_status() const { return __get_symlink_status(); }
_LIBCPP_HIDE_FROM_ABI file_status symlink_status(error_code& __ec) const noexcept {
return __get_symlink_status(&__ec);
}
_LIBCPP_HIDE_FROM_ABI bool operator==(directory_entry const& __rhs) const noexcept { return __p_ == __rhs.__p_; }
# if _LIBCPP_STD_VER <= 17
_LIBCPP_HIDE_FROM_ABI bool operator!=(directory_entry const& __rhs) const noexcept { return __p_ != __rhs.__p_; }
_LIBCPP_HIDE_FROM_ABI bool operator<(directory_entry const& __rhs) const noexcept { return __p_ < __rhs.__p_; }
_LIBCPP_HIDE_FROM_ABI bool operator<=(directory_entry const& __rhs) const noexcept { return __p_ <= __rhs.__p_; }
_LIBCPP_HIDE_FROM_ABI bool operator>(directory_entry const& __rhs) const noexcept { return __p_ > __rhs.__p_; }
_LIBCPP_HIDE_FROM_ABI bool operator>=(directory_entry const& __rhs) const noexcept { return __p_ >= __rhs.__p_; }
# else // _LIBCPP_STD_VER <= 17
_LIBCPP_HIDE_FROM_ABI strong_ordering operator<=>(const directory_entry& __rhs) const noexcept {
return __p_ <=> __rhs.__p_;
}
# endif // _LIBCPP_STD_VER <= 17
template <class _CharT, class _Traits>
_LIBCPP_HIDE_FROM_ABI friend basic_ostream<_CharT, _Traits>&
operator<<(basic_ostream<_CharT, _Traits>& __os, const directory_entry& __d) {
return __os << __d.path();
}
private:
friend class directory_iterator;
friend class recursive_directory_iterator;
friend class _LIBCPP_HIDDEN __dir_stream;
enum _CacheType : unsigned char {
_Empty,
_IterSymlink,
_IterNonSymlink,
_RefreshSymlink,
_RefreshSymlinkUnresolved,
_RefreshNonSymlink,
_IterCachedSymlink,
_IterCachedNonSymlink
};
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_HIDE_FROM_ABI __cached_data() noexcept { __reset(); }
_LIBCPP_HIDE_FROM_ABI 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_HIDE_FROM_ABI 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_HIDE_FROM_ABI static __cached_data
__create_iter_cached_result(file_type __ft, uintmax_t __size, perms __perm, file_time_type __write_time) {
__cached_data __data;
__data.__type_ = __ft;
__data.__size_ = __size;
__data.__write_time_ = __write_time;
if (__ft == file_type::symlink)
__data.__sym_perms_ = __perm;
else
__data.__non_sym_perms_ = __perm;
__data.__cache_type_ = [&]() {
switch (__ft) {
case file_type::none:
return _Empty;
case file_type::symlink:
return _IterCachedSymlink;
default:
return _IterCachedNonSymlink;
}
}();
return __data;
}
_LIBCPP_HIDE_FROM_ABI void __assign_iter_entry(_Path&& __p, __cached_data __dt) {
__p_ = std::move(__p);
__data_ = __dt;
}
_LIBCPP_EXPORTED_FROM_ABI error_code __do_refresh() noexcept;
_LIBCPP_HIDE_FROM_ABI static bool __is_dne_error(error_code const& __ec) {
if (!__ec)
return true;
switch (static_cast<errc>(__ec.value())) {
case errc::no_such_file_or_directory:
case errc::not_a_directory:
return true;
default:
return false;
}
}
_LIBCPP_HIDE_FROM_ABI 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_HIDE_FROM_ABI void __refresh(error_code* __ec = nullptr) {
__handle_error("in directory_entry::refresh",
__ec,
__do_refresh(),
/*allow_dne*/ true);
}
_LIBCPP_HIDE_FROM_ABI 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 _IterCachedSymlink:
case _RefreshSymlink:
case _RefreshSymlinkUnresolved:
if (__ec)
__ec->clear();
return file_type::symlink;
case _IterCachedNonSymlink:
case _IterNonSymlink:
case _RefreshNonSymlink: {
file_status __st(__data_.__type_);
if (__ec && !filesystem::exists(__st))
*__ec = make_error_code(errc::no_such_file_or_directory);
else if (__ec)
__ec->clear();
return __data_.__type_;
}
}
__libcpp_unreachable();
}
_LIBCPP_HIDE_FROM_ABI file_type __get_ft(error_code* __ec = nullptr) const {
switch (__data_.__cache_type_) {
case _Empty:
case _IterSymlink:
case _IterCachedSymlink:
case _RefreshSymlinkUnresolved:
return __status(__p_, __ec).type();
case _IterCachedNonSymlink:
case _IterNonSymlink:
case _RefreshNonSymlink:
case _RefreshSymlink: {
file_status __st(__data_.__type_);
if (__ec && !filesystem::exists(__st))
*__ec = make_error_code(errc::no_such_file_or_directory);
else if (__ec)
__ec->clear();
return __data_.__type_;
}
}
__libcpp_unreachable();
}
_LIBCPP_HIDE_FROM_ABI file_status __get_status(error_code* __ec = nullptr) const {
switch (__data_.__cache_type_) {
case _Empty:
case _IterNonSymlink:
case _IterSymlink:
case _IterCachedSymlink:
case _RefreshSymlinkUnresolved:
return __status(__p_, __ec);
case _IterCachedNonSymlink:
case _RefreshNonSymlink:
case _RefreshSymlink:
return file_status(__get_ft(__ec), __data_.__non_sym_perms_);
}
__libcpp_unreachable();
}
_LIBCPP_HIDE_FROM_ABI 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 _IterCachedNonSymlink:
case _RefreshNonSymlink:
return file_status(__get_sym_ft(__ec), __data_.__non_sym_perms_);
case _IterCachedSymlink:
case _RefreshSymlink:
case _RefreshSymlinkUnresolved:
return file_status(__get_sym_ft(__ec), __data_.__sym_perms_);
}
__libcpp_unreachable();
}
_LIBCPP_HIDE_FROM_ABI uintmax_t __get_size(error_code* __ec = nullptr) const {
switch (__data_.__cache_type_) {
case _Empty:
case _IterNonSymlink:
case _IterSymlink:
case _IterCachedSymlink:
case _RefreshSymlinkUnresolved:
return filesystem::__file_size(__p_, __ec);
case _IterCachedNonSymlink:
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 (filesystem::exists(__st) && !filesystem::is_regular_file(__st)) {
errc __err_kind = filesystem::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_HIDE_FROM_ABI uintmax_t __get_nlink(error_code* __ec = nullptr) const {
switch (__data_.__cache_type_) {
case _Empty:
case _IterNonSymlink:
case _IterSymlink:
case _IterCachedNonSymlink:
case _IterCachedSymlink:
case _RefreshSymlinkUnresolved:
return filesystem::__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_HIDE_FROM_ABI file_time_type __get_write_time(error_code* __ec = nullptr) const {
switch (__data_.__cache_type_) {
case _Empty:
case _IterNonSymlink:
case _IterSymlink:
case _IterCachedSymlink:
case _RefreshSymlinkUnresolved:
return filesystem::__last_write_time(__p_, __ec);
case _IterCachedNonSymlink:
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 (filesystem::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_HIDE_FROM_ABI directory_entry operator*() { return std::move(__elem_); }
private:
friend class directory_iterator;
friend class recursive_directory_iterator;
_LIBCPP_HIDE_FROM_ABI explicit __dir_element_proxy(directory_entry const& __e) : __elem_(__e) {}
_LIBCPP_HIDE_FROM_ABI __dir_element_proxy(__dir_element_proxy&& __o) : __elem_(std::move(__o.__elem_)) {}
directory_entry __elem_;
};
_LIBCPP_AVAILABILITY_FILESYSTEM_LIBRARY_POP
_LIBCPP_END_NAMESPACE_FILESYSTEM
#endif // _LIBCPP_STD_VER >= 17 && !defined(_LIBCPP_HAS_NO_FILESYSTEM)
_LIBCPP_POP_MACROS
#endif // _LIBCPP___FILESYSTEM_DIRECTORY_ENTRY_H
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