path root_name() const;
Returns: root-name, if the pathname in the generic format includes root-name, otherwise path().
path root_directory() const;
path root_path() const;
Returns: root_name() / root_directory().
path relative_path() const;
Returns: A path composed from the pathname in the generic format, if !empty(), beginning with the first filename after root-path. Otherwise, path().
path parent_path() const;
Returns: *this if !has_relative_path(), otherwise a path whose generic format pathname is the longest prefix of the generic format pathname of *this that produces one fewer element in its iteration.
path filename() const;
Returns: relative_path().empty() ? path() : *--end().
[ Example:
path("/foo/bar.txt").filename(); path("/foo/bar").filename(); path("/foo/bar/").filename(); path("/").filename(); path("//host").filename(); path(".").filename(); path("..").filename();
— end example ]
path stem() const;
Returns: Let f be the generic format pathname of filename(). Returns a path whose pathname in the generic format is
f, if it contains no periods other than a leading period or consists solely of one or two periods;
otherwise, the prefix of f ending before its last period.
[ Example:
std::cout << path("/foo/bar.txt").stem(); path p = "foo.bar.baz.tar";
for (; !p.extension().empty(); p = p.stem())
std::cout << p.extension() << '\n';
— end example ]
path extension() const;
Returns: a path whose pathname in the generic format is the suffix of filename() not included in stem().
[ Example:
path("/foo/bar.txt").extension(); path("/foo/bar").extension(); path("/foo/.profile").extension(); path(".bar").extension(); path("..bar").extension();
— end example ]
[ Note: The period is included in the return value so that it is possible to distinguish between no extension and an empty extension. — end note ]
[ Note: On non-POSIX operating systems, for a path p, it may not be the case that p.stem() + p.extension() == p.filename(), even though the generic format pathnames are the same. — end note ]
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