Struct TempDir

pub struct TempDir { /* private fields */ }

A directory in a filesystem that is automatically deleted when it goes out of scope.

This corresponds to tempfile::TempDir.

Unlike tempfile::TempDir, this API has no TempDir::path, TempDir::into_path, or impl AsRef<Path>, because absolute paths don’t interoperate well with the capability model.

Implementations

impl TempDir

pub fn new(ambient_authority: AmbientAuthority) -> Result<Self>

Attempts to make a temporary directory inside of env::temp_dir().

This corresponds to tempfile::TempDir::new.

Ambient Authority

This function makes use of ambient authority to access temporary directories.

pub fn new_in(dir: &Dir) -> Result<Self>

Create a new temporary directory.

This corresponds to tempfile::TempDir::new_in.

pub fn into_dir(self) -> Result<Dir>

Make this directory persistent.

This corresponds to tempfile::TempDir::into_path, but returns a Dir.

pub fn close(self) -> Result<()>

Closes and removes the temporary directory, returning a Result.

This corresponds to tempfile::TempDir::close.

Methods from Deref<Target = Dir>

pub fn open<P>(&self, path: P) -> Result<File, Error>

where P: AsRef<Path>,

Attempts to open a file in read-only mode.

This corresponds to std::fs::File::open, but only accesses paths relative to self.

pub fn open_with<P>( &self, path: P, options: &OpenOptions, ) -> Result<File, Error>

where P: AsRef<Path>,

Opens a file at path with the options specified by options.

This corresponds to std::fs::OpenOptions::open.

Instead of being a method on OpenOptions, this is a method on Dir, and it only accesses paths relative to self.

pub fn open_dir<P>(&self, path: P) -> Result<Dir, Error>

where P: AsRef<Path>,

Attempts to open a directory.

pub fn create_dir<P>(&self, path: P) -> Result<(), Error>

where P: AsRef<Path>,

Creates a new, empty directory at the provided path.

This corresponds to std::fs::create_dir, but only accesses paths relative to self.

pub fn create_dir_all<P>(&self, path: P) -> Result<(), Error>

where P: AsRef<Path>,

Recursively create a directory and all of its parent components if they are missing.

This corresponds to std::fs::create_dir_all, but only accesses paths relative to self.

pub fn create_dir_with<P>( &self, path: P, dir_builder: &DirBuilder, ) -> Result<(), Error>

where P: AsRef<Path>,

Creates the specified directory with the options configured in this builder.

This corresponds to std::fs::DirBuilder::create.

pub fn create<P>(&self, path: P) -> Result<File, Error>

where P: AsRef<Path>,

Opens a file in write-only mode.

This corresponds to std::fs::File::create, but only accesses paths relative to self.

pub fn canonicalize<P>(&self, path: P) -> Result<PathBuf, Error>

where P: AsRef<Path>,

Returns the canonical form of a path with all intermediate components normalized and symbolic links resolved.

This corresponds to std::fs::canonicalize, but instead of returning an absolute path, returns a path relative to the directory represented by self.

pub fn copy<P, Q>(&self, from: P, to_dir: &Dir, to: Q) -> Result<u64, Error>

where P: AsRef<Path>, Q: AsRef<Path>,

Copies the contents of one file to another. This function will also copy the permission bits of the original file to the destination file.

This corresponds to std::fs::copy, but only accesses paths relative to self.

pub fn hard_link<P, Q>( &self, src: P, dst_dir: &Dir, dst: Q, ) -> Result<(), Error>

where P: AsRef<Path>, Q: AsRef<Path>,

Creates a new hard link on a filesystem.

This corresponds to std::fs::hard_link, but only accesses paths relative to self.

pub fn metadata<P>(&self, path: P) -> Result<Metadata, Error>

where P: AsRef<Path>,

Given a path, query the file system to get information about a file, directory, etc.

This corresponds to std::fs::metadata, but only accesses paths relative to self.

pub fn dir_metadata(&self) -> Result<Metadata, Error>

Queries metadata about the underlying directory.

This is similar to std::fs::File::metadata, but for Dir rather than for File.

pub fn entries(&self) -> Result<ReadDir, Error>

Returns an iterator over the entries within self.

pub fn read_dir<P>(&self, path: P) -> Result<ReadDir, Error>

where P: AsRef<Path>,

Returns an iterator over the entries within a directory.

This corresponds to std::fs::read_dir, but only accesses paths relative to self.

pub fn read<P>(&self, path: P) -> Result<Vec<u8>, Error>

where P: AsRef<Path>,

Read the entire contents of a file into a bytes vector.

This corresponds to std::fs::read, but only accesses paths relative to self.

pub fn read_link<P>(&self, path: P) -> Result<PathBuf, Error>

where P: AsRef<Path>,

Reads a symbolic link, returning the file that the link points to.

This corresponds to std::fs::read_link, but only accesses paths relative to self. Unlike read_link_contents, this method considers it an error if the link’s target is an absolute path.

pub fn read_link_contents<P>(&self, path: P) -> Result<PathBuf, Error>

where P: AsRef<Path>,

Reads a symbolic link, returning the file that the link points to.

This corresponds to std::fs::read_link. but only accesses paths relative to self.

pub fn read_to_string<P>(&self, path: P) -> Result<String, Error>

where P: AsRef<Path>,

Read the entire contents of a file into a string.

This corresponds to std::fs::read_to_string, but only accesses paths relative to self.

pub fn remove_dir<P>(&self, path: P) -> Result<(), Error>

where P: AsRef<Path>,

Removes an empty directory.

This corresponds to std::fs::remove_dir, but only accesses paths relative to self.

pub fn remove_dir_all<P>(&self, path: P) -> Result<(), Error>

where P: AsRef<Path>,

Removes a directory at this path, after removing all its contents. Use carefully!

This corresponds to std::fs::remove_dir_all, but only accesses paths relative to self.

pub fn remove_file<P>(&self, path: P) -> Result<(), Error>

where P: AsRef<Path>,

Removes a file from a filesystem.

This corresponds to std::fs::remove_file, but only accesses paths relative to self.

pub fn rename<P, Q>(&self, from: P, to_dir: &Dir, to: Q) -> Result<(), Error>

where P: AsRef<Path>, Q: AsRef<Path>,

Rename a file or directory to a new name, replacing the original file if to already exists.

This corresponds to std::fs::rename, but only accesses paths relative to self.

pub fn set_permissions<P>( &self, path: P, perm: Permissions, ) -> Result<(), Error>

where P: AsRef<Path>,

Changes the permissions found on a file or a directory.

This corresponds to std::fs::set_permissions, but only accesses paths relative to self. Also, on some platforms, this function may fail if the file or directory cannot be opened for reading or writing first.

pub fn symlink_metadata<P>(&self, path: P) -> Result<Metadata, Error>

where P: AsRef<Path>,

Query the metadata about a file without following symlinks.

This corresponds to std::fs::symlink_metadata, but only accesses paths relative to self.

pub fn write<P, C>(&self, path: P, contents: C) -> Result<(), Error>

where P: AsRef<Path>, C: AsRef<[u8]>,

Write a slice as the entire contents of a file.

This corresponds to std::fs::write, but only accesses paths relative to self.

pub fn symlink_file<P, Q>(&self, original: P, link: Q) -> Result<(), Error>

where P: AsRef<Path>, Q: AsRef<Path>,

Creates a new file symbolic link on a filesystem.

The original argument provides the target of the symlink. The link argument provides the name of the created symlink.

Despite the argument ordering, original is not resolved relative to self here. link is resolved relative to self, and original is not resolved within this function.

The link path is resolved when the symlink is dereferenced, relative to the directory that contains it.

This corresponds to std::os::windows::fs::symlink_file, but only accesses paths relative to self.

pub fn symlink_dir<P, Q>(&self, original: P, link: Q) -> Result<(), Error>

where P: AsRef<Path>, Q: AsRef<Path>,

Creates a new directory symlink on a filesystem.

The original argument provides the target of the symlink. The link argument provides the name of the created symlink.

Despite the argument ordering, original is not resolved relative to self here. link is resolved relative to self, and original is not resolved within this function.

The link path is resolved when the symlink is dereferenced, relative to the directory that contains it.

This corresponds to std::os::windows::fs::symlink_dir, but only accesses paths relative to self.

pub fn try_clone(&self) -> Result<Dir, Error>

Creates a new Dir instance that shares the same underlying file handle as the existing Dir instance.

pub fn exists<P>(&self, path: P) -> bool

where P: AsRef<Path>,

Returns true if the path points at an existing entity.

This corresponds to std::path::Path::exists, but only accesses paths relative to self.

pub fn try_exists<P>(&self, path: P) -> Result<bool, Error>

where P: AsRef<Path>,

Returns true if the path points at an existing entity.

This corresponds to [std::fs::try_exists], but only accesses paths relative to self.

API correspondence with std

This API is not yet stable in std, but is likely to be. For more information, see the tracker issue.

pub fn is_file<P>(&self, path: P) -> bool

where P: AsRef<Path>,

Returns true if the path exists on disk and is pointing at a regular file.

This corresponds to std::path::Path::is_file, but only accesses paths relative to self.

pub fn is_dir<P>(&self, path: P) -> bool

where P: AsRef<Path>,

Checks if path is a directory.

This is similar to std::path::Path::is_dir in that it checks if path relative to Dir is a directory. This function will traverse symbolic links to query information about the destination file. In case of broken symbolic links, this will return false.

pub fn open_parent_dir( &self, ambient_authority: AmbientAuthority, ) -> Result<Dir, Error>

Constructs a new instance of Self by opening the parent directory (aka “..”) of self, using the host process’ ambient authority.

Ambient Authority

This function accesses a directory outside of the self subtree.

Trait Implementations

impl Debug for TempDir

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Deref for TempDir

type Target = Dir

The resulting type after dereferencing.

fn deref(&self) -> &Self::Target

Dereferences the value.

impl Drop for TempDir

fn drop(&mut self)

Executes the destructor for this type.