Struct diskit::virtual_diskit::VirtualDiskit

pub struct VirtualDiskit { /* private fields */ }

Virtual file system emulation diskit

This diskit emulates a virtual file system, no requests are passed through to the disk.

This is by far the most complex of all the four predefined diskits and as such has the highest potential for bugs and lacking features. Notably a permission system and symlinks are missing, although symlinks and – in part – permissions are supported by the rest of this library. If you want to fix this, feel free to submit a pull request (in an earlier version I wanted to add a permission system and already had implemented a bit before I abandoned it. If you want to try to add it I can send you my code – but beware it’s quality is horrible and the library had a couple redesigns since then).

Trait Implementations

impl Clone for VirtualDiskit

fn clone(&self) -> VirtualDiskit

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for VirtualDiskit

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

Formats the value using the given formatter.

impl Default for VirtualDiskit

fn default() -> Self

Returns the “default value” for a type.

impl Diskit for VirtualDiskit

fn set_pwd_inner(&self, new_pwd: &Path) -> Result<(), Error>

Changes the current working directory

fn get_pwd(&self) -> Result<PathBuf, Error>

Retrieves the current working directory

fn open_inner(&self, path: &Path) -> Result<File<Self>, Error>

Opens an exisitent file

fn create_inner(&self, path: &Path) -> Result<File<Self>, Error>

Creates a new file or truncates it

fn open_with_options_inner( &self, path: &Path, options: OpenOptions ) -> Result<File<Self>, Error>

Opens a file with custom options

fn read_inner(&self, file: &FileInner, buf: &mut [u8]) -> Result<usize, Error>

Reads as much as possible into the provided buffer

fn read_to_end_inner( &self, file: &mut FileInner, buf: &mut Vec<u8> ) -> Result<usize, Error>

Reads the complete file into the provided buffer

fn read_to_string_inner( &self, file: &mut FileInner, buf: &mut String ) -> Result<usize, Error>

Reads the complete file into the provided string

fn write_inner(&self, file: &mut FileInner, buf: &[u8]) -> Result<usize, Error>

Writes as much as possible from the provided buffer

fn write_all_inner(&self, file: &mut FileInner, buf: &[u8]) -> Result<(), Error>

Writes the complete provided buufer into the file

fn flush_inner(&self, _file: &mut FileInner) -> Result<(), Error>

Flushes all writes of the file

fn metadata_inner(&self, file: &FileInner) -> Result<Metadata, Error>

Retrieves the metadata of the file

fn seek_inner(&self, file: &mut FileInner, pos: SeekFrom) -> Result<u64, Error>

Repositions the file’s cursor

fn create_dir_inner(&self, path: &Path) -> Result<(), Error>

Creates a directory

fn create_dir_all_inner(&self, path: &Path) -> Result<(), Error>

Creates a directory and all above if necessary

fn close_inner(&self, file: FileInner) -> Result<(), Error>

Closes the file

fn walkdir_inner(&self, path: &Path) -> WalkDir<Self>

Creates a Walkdir from a path

fn into_walkdir_iterator(&self, walkdir: WalkDir<Self>) -> WalkdirIterator<Self>

Converts a walkdir builder to an iterator

fn walkdir_next_inner( &self, inner: &mut WalkdirIteratorInner ) -> Option<Result<DirEntry, Error>>

Gets the next file in a WalkDir