Trait FileExt

pub trait FileExt:
    Send
    + Sync
    + 'static {
    // Required methods
    fn len(&self) -> Result<u64>;
    fn write_at_vectored(
        &self,
        bufs: &[IoSlice<'_>],
        offset: u64,
    ) -> Result<usize>;
    fn write_at(&self, buf: &[u8], offset: u64) -> Result<usize>;
    fn read_at(&self, buf: &mut [u8], offset: u64) -> Result<usize>;
    fn sync_all(&self) -> Result<()>;
    fn set_len(&self, len: u64) -> Result<()>;
    fn read_exact_at_async<B: IoBufMut + Send + 'static>(
        &self,
        buf: B,
        offset: u64,
    ) -> impl Future<Output = (B, Result<()>)> + Send;
    fn read_at_async<B: IoBufMut + Send + 'static>(
        &self,
        buf: B,
        offset: u64,
    ) -> impl Future<Output = (B, Result<usize>)> + Send;
    fn write_all_at_async<B: IoBuf + Send + 'static>(
        &self,
        buf: B,
        offset: u64,
    ) -> impl Future<Output = (B, Result<()>)> + Send;

    // Provided methods
    fn write_all_at(&self, buf: &[u8], offset: u64) -> Result<()> { ... }
    fn read_exact_at(&self, buf: &mut [u8], offset: u64) -> Result<()> { ... }
    fn cursor(&self, offset: u64) -> Cursor<'_, Self> 
       where Self: Sized { ... }
}

Required Methods

fn len(&self) -> Result<u64>

fn write_at_vectored(&self, bufs: &[IoSlice<'_>], offset: u64) -> Result<usize>

fn write_at(&self, buf: &[u8], offset: u64) -> Result<usize>

fn read_at(&self, buf: &mut [u8], offset: u64) -> Result<usize>

fn sync_all(&self) -> Result<()>

fn set_len(&self, len: u64) -> Result<()>

fn read_exact_at_async<B: IoBufMut + Send + 'static>( &self, buf: B, offset: u64, ) -> impl Future<Output = (B, Result<()>)> + Send

fn read_at_async<B: IoBufMut + Send + 'static>( &self, buf: B, offset: u64, ) -> impl Future<Output = (B, Result<usize>)> + Send

fn write_all_at_async<B: IoBuf + Send + 'static>( &self, buf: B, offset: u64, ) -> impl Future<Output = (B, Result<()>)> + Send

Provided Methods

fn write_all_at(&self, buf: &[u8], offset: u64) -> Result<()>

fn read_exact_at(&self, buf: &mut [u8], offset: u64) -> Result<()>

fn cursor(&self, offset: u64) -> Cursor<'_, Self>

where Self: Sized,

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementations on Foreign Types

impl FileExt for File

fn write_at_vectored(&self, bufs: &[IoSlice<'_>], offset: u64) -> Result<usize>

fn write_at(&self, buf: &[u8], offset: u64) -> Result<usize>

fn read_at(&self, buf: &mut [u8], offset: u64) -> Result<usize>

fn sync_all(&self) -> Result<()>

fn set_len(&self, len: u64) -> Result<()>

async fn read_exact_at_async<B: IoBufMut + Send + 'static>( &self, buf: B, offset: u64, ) -> (B, Result<()>)

async fn read_at_async<B: IoBufMut + Send + 'static>( &self, buf: B, offset: u64, ) -> (B, Result<usize>)

async fn write_all_at_async<B: IoBuf + Send + 'static>( &self, buf: B, offset: u64, ) -> (B, Result<()>)

fn len(&self) -> Result<u64>

impl<U, V> FileExt for Either<U, V>

where V: FileExt, U: FileExt,

fn len(&self) -> Result<u64>

fn write_at_vectored(&self, bufs: &[IoSlice<'_>], offset: u64) -> Result<usize>

fn write_at(&self, buf: &[u8], offset: u64) -> Result<usize>

fn read_at(&self, buf: &mut [u8], offset: u64) -> Result<usize>

fn sync_all(&self) -> Result<()>

fn set_len(&self, len: u64) -> Result<()>

fn read_exact_at_async<B: IoBufMut + Send + 'static>( &self, buf: B, offset: u64, ) -> impl Future<Output = (B, Result<()>)> + Send

fn read_at_async<B: IoBufMut + Send + 'static>( &self, buf: B, offset: u64, ) -> impl Future<Output = (B, Result<usize>)> + Send

fn write_all_at_async<B: IoBuf + Send + 'static>( &self, buf: B, offset: u64, ) -> impl Future<Output = (B, Result<()>)> + Send

Implementors