Struct File 

pub struct File<'a, S: Storage> { /* private fields */ }

An open file handle.

Obtained from Filesystem::open. Automatically closed on drop; call File::close explicitly to check for errors.

Implementations

impl<'a, S: Storage> File<'a, S>

pub fn read(&self, buf: &mut [u8]) -> Result<u32, Error>

Read up to buf.len() bytes from the current position. Returns the number of bytes actually read.

pub fn write(&self, data: &[u8]) -> Result<u32, Error>

Write data at the current position. Returns the number of bytes written.

pub fn seek(&self, pos: SeekFrom) -> Result<u32, Error>

Seek to a position. Returns the new absolute offset.

pub fn tell(&self) -> u32

Return the current read/write position.

pub fn size(&self) -> u32

Return the file size in bytes.

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

Flush cached writes to storage.

pub fn truncate(&self, size: u32) -> Result<(), Error>

Truncate or extend the file to size bytes.

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

Close the file, flushing any pending writes. Consumes self.

Dropping a File also closes it, but errors are silently ignored.

Trait Implementations

impl<S: Storage> Drop for File<'_, S>

fn drop(&mut self)

Executes the destructor for this type.