std::filesystem::path:: generic_string, std::filesystem::path:: generic_wstring, std::filesystem::path:: generic_u8string, std::filesystem::path:: generic_u16string, std::filesystem::path:: generic_u32string

Returns the internal pathname in generic pathname format, converted to specific string type. Conversion, if any, is specified as follows:

• If path::value_type is char , conversion, if any, is system-dependent. This is the case on typical POSIX systems (such as Linux), where native encoding is UTF-8 and string() performs no conversion.
• Otherwise, if path::value_type is wchar_t , conversion, if any, is unspecified. This is the case on Windows, where wchar_t is 16 bit and the native encoding is UTF-16.
• Otherwise, if path::value_type is char16_t , native encoding is UTF-16 and the conversion method is unspecified.
• Otherwise, if path::value_type is char32_t , native encoding is UTF-32 and the conversion method is unspecified.
• Otherwise, if path::value_type is char8_t , native encoding is UTF-8 and the conversion method is unspecified.

The / character is used as the directory separator.

Parameters

Return value

The internal pathname in generic pathname format, converted to specified string type.

Exceptions

May throw implementation-defined exceptions.

Example

#include <cstddef>
#include <filesystem>
#include <iomanip>
#include <iostream>
#include <span>
#include <string_view>
 
void print(std::string_view rem, auto const& str)
{
    std::cout << rem << std::hex << std::uppercase << std::setfill('0');
    for (const auto b : std::as_bytes(std::span{str}))
        std::cout << std::setw(2) << std::to_integer<unsigned>(b) << ' ';
    std::cout << '\n';
}
 
int main()
{
    std::filesystem::path p{"/家/屋"};
    std::cout << p << '\n';
 
    print("string    : ", p.generic_string());
    print("u8string  : ", p.generic_u8string());
    print("u16string : ", p.generic_u16string());
    print("u32string : ", p.generic_u32string());
    print("wstring   : ", p.generic_wstring());
}

"/家/屋"
string    : 2F E5 AE B6 2F E5 B1 8B
u8string  : 2F E5 AE B6 2F E5 B1 8B
u16string : 2F 00 B6 5B 2F 00 4B 5C
u32string : 2F 00 00 00 B6 5B 00 00 2F 00 00 00 4B 5C 00 00
wstring   : 2F 00 00 00 B6 5B 00 00 2F 00 00 00 4B 5C 00 00

See also