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use std::ffi::OsString;
use std::fs;
use std::path::PathBuf;
use std::sync::Arc;
use cfg_if::cfg_if;
use crate::io;
use crate::task::blocking;
/// An entry inside a directory.
///
/// An instance of `DirEntry` represents an entry inside a directory on the filesystem. Each entry
/// carriers additional information like the full path or metadata.
///
/// This type is an async version of [`std::fs::DirEntry`].
///
/// [`std::fs::DirEntry`]: https://doc.rust-lang.org/std/fs/struct.DirEntry.html
#[derive(Debug)]
pub struct DirEntry {
/// The inner synchronous `DirEntry`.
inner: Arc<fs::DirEntry>,
#[cfg(unix)]
ino: u64,
}
impl DirEntry {
/// Creates an asynchronous `DirEntry` from a synchronous handle.
pub(crate) fn new(inner: fs::DirEntry) -> DirEntry {
#[cfg(unix)]
let dir_entry = DirEntry {
ino: inner.ino(),
inner: Arc::new(inner),
};
#[cfg(windows)]
let dir_entry = DirEntry {
inner: Arc::new(inner),
};
dir_entry
}
/// Returns the full path to this entry.
///
/// The full path is created by joining the original path passed to [`read_dir`] with the name
/// of this entry.
///
/// [`read_dir`]: fn.read_dir.html
///
/// # Examples
///
/// ```no_run
/// # fn main() -> std::io::Result<()> { async_std::task::block_on(async {
/// #
/// use async_std::fs;
/// use async_std::prelude::*;
///
/// let mut dir = fs::read_dir(".").await?;
///
/// while let Some(entry) = dir.next().await {
/// let entry = entry?;
/// println!("{:?}", entry.path());
/// }
/// #
/// # Ok(()) }) }
/// ```
pub fn path(&self) -> PathBuf {
self.inner.path()
}
/// Returns the metadata for this entry.
///
/// This function will not traverse symlinks if this entry points at a symlink.
///
/// # Examples
///
/// ```no_run
/// # fn main() -> std::io::Result<()> { async_std::task::block_on(async {
/// #
/// use async_std::fs;
/// use async_std::prelude::*;
///
/// let mut dir = fs::read_dir(".").await?;
///
/// while let Some(entry) = dir.next().await {
/// let entry = entry?;
/// println!("{:?}", entry.metadata().await?);
/// }
/// #
/// # Ok(()) }) }
/// ```
pub async fn metadata(&self) -> io::Result<fs::Metadata> {
let inner = self.inner.clone();
blocking::spawn(async move { inner.metadata() }).await
}
/// Returns the file type for this entry.
///
/// This function will not traverse symlinks if this entry points at a symlink.
///
/// # Examples
///
/// ```no_run
/// # fn main() -> std::io::Result<()> { async_std::task::block_on(async {
/// #
/// use async_std::fs;
/// use async_std::prelude::*;
///
/// let mut dir = fs::read_dir(".").await?;
///
/// while let Some(entry) = dir.next().await {
/// let entry = entry?;
/// println!("{:?}", entry.file_type().await?);
/// }
/// #
/// # Ok(()) }) }
/// ```
pub async fn file_type(&self) -> io::Result<fs::FileType> {
let inner = self.inner.clone();
blocking::spawn(async move { inner.file_type() }).await
}
/// Returns the bare name of this entry without the leading path.
///
/// # Examples
///
/// ```no_run
/// # fn main() -> std::io::Result<()> { async_std::task::block_on(async {
/// #
/// use async_std::fs;
/// use async_std::prelude::*;
///
/// let mut dir = fs::read_dir(".").await?;
///
/// while let Some(entry) = dir.next().await {
/// let entry = entry?;
/// println!("{:?}", entry.file_name());
/// }
/// #
/// # Ok(()) }) }
/// ```
pub fn file_name(&self) -> OsString {
self.inner.file_name()
}
}
cfg_if! {
if #[cfg(feature = "docs")] {
use crate::os::unix::fs::DirEntryExt;
} else if #[cfg(unix)] {
use std::os::unix::fs::DirEntryExt;
}
}
#[cfg_attr(feature = "docs", doc(cfg(unix)))]
cfg_if! {
if #[cfg(any(unix, feature = "docs"))] {
impl DirEntryExt for DirEntry {
fn ino(&self) -> u64 {
self.ino
}
}
}
}