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//! Unix-specific extensions to primitives in the `tokio_fs` module.
use std::io;
use std::path::Path;
use std::os::unix::fs;
use futures::{Future, Poll};
/// Creates a new symbolic link on the filesystem.
///
/// The `dst` path will be a symbolic link pointing to the `src` path.
///
/// This is an async version of [`std::os::unix::fs::symlink`][std]
///
/// [std]: https://doc.rust-lang.org/std/os/unix/fs/fn.symlink.html
pub fn symlink<P: AsRef<Path>, Q: AsRef<Path>>(src: P, dst: Q) -> SymlinkFuture<P, Q> {
SymlinkFuture::new(src, dst)
}
/// Future returned by `symlink`.
#[derive(Debug)]
pub struct SymlinkFuture<P, Q>
where
P: AsRef<Path>,
Q: AsRef<Path>
{
src: P,
dst: Q,
}
impl<P, Q> SymlinkFuture<P, Q>
where
P: AsRef<Path>,
Q: AsRef<Path>
{
fn new(src: P, dst: Q) -> SymlinkFuture<P, Q> {
SymlinkFuture {
src: src,
dst: dst,
}
}
}
impl<P, Q> Future for SymlinkFuture<P, Q>
where
P: AsRef<Path>,
Q: AsRef<Path>
{
type Item = ();
type Error = io::Error;
fn poll(&mut self) -> Poll<Self::Item, Self::Error> {
::blocking_io(|| fs::symlink(&self.src, &self.dst) )
}
}
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