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Implemented Path::file_name

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Wouter Geraedts 2019-10-13 19:03:33 +02:00
parent a7eaae91ae
commit a6e1abecfc
1 changed files with 27 additions and 1 deletions
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28
src/path/path.rs
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@ -183,7 +183,7 @@ impl Path {
/// * Otherwise, the portion of the file name after the final `.`
///
/// [`self.file_name`]: struct.Path.html#method.file_name
/// [`None`]: https://doc.rust-lang.org/std/option/enum.Option.html
/// [`None`]: https://doc.rust-lang.org/std/option/enum.Option.html#variant.None
///
/// # Examples
///
@ -198,6 +198,32 @@ impl Path {
self.inner.extension()
}
/// Returns the final component of the `Path`, if there is one.
///
/// If the path is a normal file, this is the file name. If it's the path of a directory, this
/// is the directory name.
///
/// Returns [`None`] if the path terminates in `..`.
///
/// [`None`]: https://doc.rust-lang.org/std/option/enum.Option.html#variant.None
///
/// # Examples
///
/// ```
/// use async_std::path::Path;
/// use std::ffi::OsStr;
///
/// assert_eq!(Some(OsStr::new("bin")), Path::new("/usr/bin/").file_name());
/// assert_eq!(Some(OsStr::new("foo.txt")), Path::new("tmp/foo.txt").file_name());
/// assert_eq!(Some(OsStr::new("foo.txt")), Path::new("foo.txt/.").file_name());
/// assert_eq!(Some(OsStr::new("foo.txt")), Path::new("foo.txt/.//").file_name());
/// assert_eq!(None, Path::new("foo.txt/..").file_name());
/// assert_eq!(None, Path::new("/").file_name());
/// ```
pub fn file_name(&self) -> Option<&OsStr> {
self.inner.file_name()
}
/// Converts a [`Box<Path>`][`Box`] into a [`PathBuf`] without copying or
/// allocating.
///