Struct grebedb::vfs::ReadOnlyVfs

pub struct ReadOnlyVfs { /* fields omitted */ }

Wrapper that allows only read operations.

Implementations

impl ReadOnlyVfs

pub fn new(inner: Box<dyn Vfs + Sync + Send>) -> Self

Wrap a VFS.

pub fn into_inner(self) -> Box<dyn Vfs + Sync + Send>

Return the wrapped VFS.

Trait Implementations

impl Debug for ReadOnlyVfs

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

Formats the value using the given formatter.

impl Vfs for ReadOnlyVfs

fn lock(&mut self, path: &str) -> Result<(), Error>

Lock the file preventing other processes from accessing it.

fn unlock(&mut self, path: &str) -> Result<(), Error>

Unlock the file.

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

Read the contents of a file to a vector.

fn write(
    &mut self,
    _path: &str,
    _data: &[u8],
    _sync_option: VfsSyncOption
) -> Result<(), Error>

Write the contents to a file.

fn sync_file(
    &mut self,
    _path: &str,
    _sync_option: VfsSyncOption
) -> Result<(), Error>

Flush buffered data of a file to persistent storage.

fn remove_file(&mut self, _path: &str) -> Result<(), Error>

Delete a file.

fn read_dir(&self, path: &str) -> Result<Vec<String>, Error>

Return a vector of filenames in a directory.

fn create_dir(&mut self, _path: &str) -> Result<(), Error>

Create a directory at the given path.

fn remove_dir(&mut self, _path: &str) -> Result<(), Error>

Remove an empty directory.

fn rename_file(&mut self, _old_path: &str, _new_path: &str) -> Result<(), Error>

Rename a file.

fn is_dir(&self, path: &str) -> Result<bool, Error>

Return whether the path is a directory.

fn exists(&self, path: &str) -> Result<bool, Error>

Return whether the path exists.

fn create_dir_all(&mut self, path: &str) -> Result<(), Error>

Create directories for all components of the path if they do not exist.

fn remove_empty_dir_all(&mut self, path: &str) -> Result<(), Error>

Remove empty directories in the path if they exist.