std::filesystem::path::filename

 

C++

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檔案系統庫

類
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::file_time_type filesystem::perms filesystem::perm_options filesystem::copy_options filesystem::directory_options
函式
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::temp_directory_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
檔案型別
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::path

成員型別
成員常量
path::native_formatpath::generic_formatpath::auto_format
成員函式
path::path path::~path path::operator= path::assign path::appendpath::operator/= path::concatpath::operator+= path::clear path::make_preferred path::remove_filename path::replace_filename path::replace_extension    path::swap path::compare path::beginpath::end	path::c_strpath::nativepath::operator string_type path::stringpath::u8stringpath::u16stringpath::u32stringpath::wstring path::generic_stringpath::generic_u8stringpath::generic_u16stringpath::generic_u32stringpath::generic_wstring path::lexically_normalpath::lexically_relativepath::lexically_proximate
路徑分解
path::root_name path::root_directory path::root_path path::relative_path path::parent_path path::filename path::stem path::extension path::empty	path::has_root_pathpath::has_root_namepath::has_root_directorypath::has_relative_pathpath::has_parent_pathpath::has_filenamepath::has_stempath::has_extension path::is_absolutepath::is_relative
非成員函式
operator==operator!=operator<operator<=operator>operator>=operator<=> (C++20 前)(C++20 前)(C++20 前)(C++20 前)(C++20 前)(C++20)	operator/ operator<<operator>> swap(std::filesystem::path) hash_value u8path
輔助類
hash<std::filesystem::path>	formatter<std::filesystem::path> (C++26)

 

path filename() const;		(C++17 起)

返回路徑的通用格式檔名元件。

等價於 relative_path().empty() ? path() : *--end()。

引數

(無)

返回值

該路徑所標識的檔名。

異常

可能丟擲實現定義的異常。

示例

執行此程式碼

#include <filesystem>
#include <iostream>
namespace fs = std::filesystem;
 
int main()
{
    std::cout << fs::path("/foo/bar.txt").filename() << '\n'
              << fs::path("/foo/.bar").filename() << '\n'
              << fs::path("/foo/bar/").filename() << '\n'
              << fs::path("/foo/.").filename() << '\n'
              << fs::path("/foo/..").filename() << '\n'
              << fs::path(".").filename() << '\n'
              << fs::path("..").filename() << '\n'
              << fs::path("/").filename() << '\n'
              << fs::path("//host").filename() << '\n';
}

輸出

"bar.txt"
".bar"
""
"."
".."
"."
".."
""
"host"

參閱

extension	返回副檔名路徑元件 (公開成員函式)
stem	返回主檔名路徑元件（不帶最終副檔名的檔名） (公開成員函式)
replace_filename	用另一個路徑替換最後一個路徑元件 (公開成員函式)
has_filename	檢查相應路徑元素是否不為空 (公開成員函式)