std::filesystem::directory_entry::path

 

C++

语言

标准库头文件

自立与有宿主实现

具名要求

语言支持库

概念库 (C++20)

诊断库

工具库

字符串库

容器库

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范围库 (C++20)

算法库

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本地化库

输入/输出库

文件系统库 (C++17)

正则表达式库 (C++11)

原子操作库 (C++11)

线程支持库 (C++11)

技术规范

 

文件系统库

类
filesystem::path filesystem::filesystem_error filesystem::directory_entry filesystem::directory_iterator filesystem::recursive_directory_iterator filesystem::file_status	filesystem::space_info filesystem::file_type filesystem::perms filesystem::perm_options filesystem::copy_options filesystem::directory_options filesystem::file_time_type
函数
filesystem::absolute filesystem::canonicalfilesystem::weakly_canonical filesystem::relativefilesystem::proximate filesystem::copy filesystem::copy_file filesystem::copy_symlink filesystem::create_directory filesystem::create_directories filesystem::create_hard_link filesystem::create_symlink filesystem::create_directory_symlink filesystem::current_path	filesystem::exists filesystem::equivalent filesystem::file_size filesystem::hard_link_count filesystem::last_write_time filesystem::permissions filesystem::read_symlink filesystem::remove filesystem::remove_all filesystem::rename filesystem::resize_file filesystem::space filesystem::status filesystem::symlink_status filesystem::temp_directory_path
文件类型
filesystem::is_block_file filesystem::is_character_file filesystem::is_directory filesystem::is_empty filesystem::status_known	filesystem::is_fifo filesystem::is_other filesystem::is_regular_file filesystem::is_socket filesystem::is_symlink

 

std::filesystem::directory_entry

成员函数

directory_entry::directory_entry

修改器

directory_entry::operator=

directory_entry::assign

directory_entry::replace_filename

directory_entry::refresh

观察器

directory_entry::pathdirectory_entry::operator const path&

directory_entry::exists

directory_entry::is_block_file

directory_entry::is_character_file

directory_entry::is_directory

directory_entry::is_fifo

directory_entry::is_other

directory_entry::is_regular_file

directory_entry::is_socket

directory_entry::is_symlink

directory_entry::file_size

directory_entry::hard_link_count

directory_entry::last_write_time

directory_entry::statusdirectory_entry::symlink_status

directory_entry::operator==directory_entry::operator!=directory_entry::operator<directory_entry::operator>directory_entry::operator<=directory_entry::operator>=directory_entry::operator<=> (C++20 前)(C++20 前)(C++20 前)(C++20 前)(C++20 前)(C++20)

非成员函数

operator<<

 

const std::filesystem::path& path() const noexcept;		(C++17 起)
operator const std::filesystem::path& () const noexcept;		(C++17 起)

返回 directory_entry 所保有的路径对象。

参数

（无）

返回值

directory_entry 所保有的 path 对象。

示例

运行此代码

#include <filesystem>
#include <fstream>
#include <iostream>
 
namespace fs = std::filesystem;
 
std::string get_stem(const fs::path &p) { return (p.stem().string()); }
void create_file(const fs::path &p) { std::ofstream o{p}; }
 
int main()
{
        const fs::path dir{"tmp_dir"};
        fs::create_directory(dir);
        create_file(dir / "one");
        create_file(dir / "two");
        create_file(dir / "three");
 
        for (const auto &file : fs::directory_iterator(dir)) {
                // 显式转换
                std::cout << get_stem(file.path()) << '\n';
 
                // 隐式转换
                std::cout << get_stem(file) << '\n';
        }
 
        fs::remove_all(dir);
}

可能的输出：

two
two
one
one
three
three