Struct ara::read_at_wrapper::ReadAtWrapper

pub struct ReadAtWrapper<Source> where
    Source: GetReaderAt,  { /* fields omitted */ }

Wrapper that provides ReadAt from a type that implements GetReaderAt

Implementations

impl<Source> ReadAtWrapper<Source> where
    Source: GetReaderAt, 

pub const DEFAULT_MAX_HEADS: usize

pub fn new(
    source: Arc<Source>,
    len: u64,
    initial_head: Option<(u64, Source::Reader)>
) -> Self

Trait Implementations

impl<Source> ReadAt for ReadAtWrapper<Source> where
    Source: GetReaderAt, 

fn read_at<'life0, 'life1, 'async_trait>(
    &'life0 self,
    offset: u64,
    buf: &'life1 mut [u8]
) -> Pin<Box<dyn Future<Output = Result<usize>> + 'async_trait>> where
    'life0: 'async_trait,
    'life1: 'async_trait,
    Self: 'async_trait, 

Read bytes from resource, starting at offset, into buf

fn len(&self) -> u64

Returns the length of the resource, in bytes

#[must_use]fn read_at_exact<'life0, 'life1, 'async_trait>(
    &'life0 self,
    offset: u64,
    buf: &'life1 mut [u8]
) -> Pin<Box<dyn Future<Output = Result<()>> + 'async_trait>> where
    'life0: 'async_trait,
    'life1: 'async_trait,
    Self: 'async_trait, 

Reads exactly buf, starting at offset

fn is_empty(&self) -> bool

Returns true if that resource is empty (has a length of 0)