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use crate::fs::asyncify;
use std::io;
use std::path::Path;
/// A builder for creating directories in various manners.
///
/// This is a specialized version of [`std::fs::DirBuilder`] for usage on
/// the Tokio runtime.
#[derive(Debug, Default)]
pub struct DirBuilder {
/// Indicates whether to create parent directories if they are missing.
recursive: bool,
/// Sets the Unix mode for newly created directories.
#[cfg(unix)]
pub(super) mode: Option<u32>,
}
impl DirBuilder {
/// Creates a new set of options with default mode/security settings for all
/// platforms and also non-recursive.
///
/// This is an async version of [`std::fs::DirBuilder::new`].
///
/// # Examples
///
/// ```no_run
/// use tokio::fs::DirBuilder;
///
/// let builder = DirBuilder::new();
/// ```
pub fn new() -> Self {
DirBuilder::default()
}
/// Indicates whether to create directories recursively (including all parent directories).
/// Parents that do not exist are created with the same security and permissions settings.
///
/// This option defaults to `false`.
///
/// This is an async version of [`std::fs::DirBuilder::recursive`].
///
/// # Examples
///
/// ```no_run
/// use tokio::fs::DirBuilder;
///
/// let mut builder = DirBuilder::new();
/// builder.recursive(true);
/// ```
pub fn recursive(&mut self, recursive: bool) -> &mut Self {
self.recursive = recursive;
self
}
/// Creates the specified directory with the configured options.
///
/// It is considered an error if the directory already exists unless
/// recursive mode is enabled.
///
/// This is an async version of [`std::fs::DirBuilder::create`].
///
/// # Errors
///
/// An error will be returned under the following circumstances:
///
/// * Path already points to an existing file.
/// * Path already points to an existing directory and the mode is
/// non-recursive.
/// * The calling process doesn't have permissions to create the directory
/// or its missing parents.
/// * Other I/O error occurred.
///
/// # Examples
///
/// ```no_run
/// use tokio::fs::DirBuilder;
/// use std::io;
///
/// #[tokio::main]
/// async fn main() -> io::Result<()> {
/// DirBuilder::new()
/// .recursive(true)
/// .create("/tmp/foo/bar/baz")
/// .await?;
///
/// Ok(())
/// }
/// ```
pub async fn create(&self, path: impl AsRef<Path>) -> io::Result<()> {
let path = path.as_ref().to_owned();
let mut builder = std::fs::DirBuilder::new();
builder.recursive(self.recursive);
#[cfg(unix)]
{
if let Some(mode) = self.mode {
std::os::unix::fs::DirBuilderExt::mode(&mut builder, mode);
}
}
asyncify(move || builder.create(path)).await
}
}
feature! {
#![unix]
impl DirBuilder {
/// Sets the mode to create new directories with.
///
/// This option defaults to 0o777.
///
/// # Examples
///
///
/// ```no_run
/// use tokio::fs::DirBuilder;
///
/// let mut builder = DirBuilder::new();
/// builder.mode(0o775);
/// ```
pub fn mode(&mut self, mode: u32) -> &mut Self {
self.mode = Some(mode);
self
}
}
}