| use std::fs; |
| use std::io; |
| use std::path::Path; |
| |
| use futures::{Future, Poll}; |
| |
| /// Rename a file or directory to a new name, replacing the original file if |
| /// `to` already exists. |
| /// |
| /// This will not work if the new name is on a different mount point. |
| /// |
| /// This is an async version of [`std::fs::rename`][std] |
| /// |
| /// [std]: https://doc.rust-lang.org/std/fs/fn.rename.html |
| pub fn rename<P: AsRef<Path>, Q: AsRef<Path>>(from: P, to: Q) -> RenameFuture<P, Q> { |
| RenameFuture::new(from, to) |
| } |
| |
| /// Future returned by `rename`. |
| #[derive(Debug)] |
| pub struct RenameFuture<P, Q> |
| where |
| P: AsRef<Path>, |
| Q: AsRef<Path> |
| { |
| from: P, |
| to: Q, |
| } |
| |
| impl<P, Q> RenameFuture<P, Q> |
| where |
| P: AsRef<Path>, |
| Q: AsRef<Path> |
| { |
| fn new(from: P, to: Q) -> RenameFuture<P, Q> { |
| RenameFuture { |
| from: from, |
| to: to, |
| } |
| } |
| } |
| |
| impl<P, Q> Future for RenameFuture<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::rename(&self.from, &self.to) ) |
| } |
| } |