true
}
+ /// Yields a mutable reference to the underlying [`OsString`] instance.
+ ///
+ /// # Examples
+ ///
+ /// ```
+ /// #![feature(path_as_mut_os_str)]
+ /// use std::path::{Path, PathBuf};
+ ///
+ /// let mut path = PathBuf::from("/foo");
+ ///
+ /// path.push("bar");
+ /// assert_eq!(path, Path::new("/foo/bar"));
+ ///
+ /// // OsString's `push` does not add a separator.
+ /// path.as_mut_os_string().push("baz");
+ /// assert_eq!(path, Path::new("/foo/barbaz"));
+ /// ```
+ #[unstable(feature = "path_as_mut_os_str", issue = "105021")]
+ #[must_use]
+ #[inline]
+ pub fn as_mut_os_string(&mut self) -> &mut OsString {
+ &mut self.inner
+ }
+
/// Consumes the `PathBuf`, yielding its internal [`OsString`] storage.
///
/// # Examples
&self.inner
}
+ /// Yields a mutable reference to the underlying [`OsStr`] slice.
+ ///
+ /// # Examples
+ ///
+ /// ```
+ /// #![feature(path_as_mut_os_str)]
+ /// use std::path::{Path, PathBuf};
+ ///
+ /// let mut path = PathBuf::from("/Foo.TXT").into_boxed_path();
+ ///
+ /// assert_ne!(&*path, Path::new("/foo.txt"));
+ ///
+ /// path.as_mut_os_str().make_ascii_lowercase();
+ /// assert_eq!(&*path, Path::new("/foo.txt"));
+ /// ```
+ #[unstable(feature = "path_as_mut_os_str", issue = "105021")]
+ #[must_use]
+ #[inline]
+ pub fn as_mut_os_str(&mut self) -> &mut OsStr {
+ &mut self.inner
+ }
+
/// Yields a [`&str`] slice if the `Path` is valid unicode.
///
/// This conversion may entail doing a check for UTF-8 validity.
/// Returns the `Path` without its final component, if there is one.
///
- /// Returns [`None`] if the path terminates in a root or prefix.
+ /// This means it returns `Some("")` for relative paths with one component.
+ ///
+ /// Returns [`None`] if the path terminates in a root or prefix, or if it's
+ /// the empty string.
///
/// # Examples
///
/// let grand_parent = parent.parent().unwrap();
/// assert_eq!(grand_parent, Path::new("/"));
/// assert_eq!(grand_parent.parent(), None);
+ ///
+ /// let relative_path = Path::new("foo/bar");
+ /// let parent = relative_path.parent();
+ /// assert_eq!(parent, Some(Path::new("foo")));
+ /// let grand_parent = parent.and_then(Path::parent);
+ /// assert_eq!(grand_parent, Some(Path::new("")));
+ /// let great_grand_parent = grand_parent.and_then(Path::parent);
+ /// assert_eq!(great_grand_parent, None);
/// ```
#[stable(feature = "rust1", since = "1.0.0")]
+ #[doc(alias = "dirname")]
#[must_use]
pub fn parent(&self) -> Option<&Path> {
let mut comps = self.components();
/// assert_eq!(None, Path::new("/").file_name());
/// ```
#[stable(feature = "rust1", since = "1.0.0")]
+ #[doc(alias = "basename")]
#[must_use]
pub fn file_name(&self) -> Option<&OsStr> {
self.components().next_back().and_then(|p| match p {