struct CountRead<ReadT> {
inner: ReadT,
count: usize,
}
Expand description
A reader that keeps track of how many bytes it has read.
This is useful for calculating the block data length when the (varint frame) body length is known.
Fields§
§inner: ReadT
§count: usize
Implementations§
source§impl<ReadT> CountRead<ReadT>
impl<ReadT> CountRead<ReadT>
pub fn new(inner: ReadT) -> Self
pub fn bytes_read(&self) -> usize
pub fn into_inner(self) -> ReadT
Trait Implementations§
source§impl<ReadT> Read for CountRead<ReadT>where
ReadT: Read,
impl<ReadT> Read for CountRead<ReadT>where
ReadT: Read,
source§fn read(&mut self, buf: &mut [u8]) -> Result<usize>
fn read(&mut self, buf: &mut [u8]) -> Result<usize>
Pull some bytes from this source into the specified buffer, returning
how many bytes were read. Read more
1.36.0 · source§fn read_vectored(&mut self, bufs: &mut [IoSliceMut<'_>]) -> Result<usize, Error>
fn read_vectored(&mut self, bufs: &mut [IoSliceMut<'_>]) -> Result<usize, Error>
Like
read
, except that it reads into a slice of buffers. Read moresource§fn is_read_vectored(&self) -> bool
fn is_read_vectored(&self) -> bool
🔬This is a nightly-only experimental API. (
can_vector
)1.0.0 · source§fn read_to_end(&mut self, buf: &mut Vec<u8>) -> Result<usize, Error>
fn read_to_end(&mut self, buf: &mut Vec<u8>) -> Result<usize, Error>
Read all bytes until EOF in this source, placing them into
buf
. Read more1.0.0 · source§fn read_to_string(&mut self, buf: &mut String) -> Result<usize, Error>
fn read_to_string(&mut self, buf: &mut String) -> Result<usize, Error>
Read all bytes until EOF in this source, appending them to
buf
. Read more1.6.0 · source§fn read_exact(&mut self, buf: &mut [u8]) -> Result<(), Error>
fn read_exact(&mut self, buf: &mut [u8]) -> Result<(), Error>
Read the exact number of bytes required to fill
buf
. Read moresource§fn read_buf(&mut self, buf: BorrowedCursor<'_>) -> Result<(), Error>
fn read_buf(&mut self, buf: BorrowedCursor<'_>) -> Result<(), Error>
🔬This is a nightly-only experimental API. (
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source§fn read_buf_exact(&mut self, cursor: BorrowedCursor<'_>) -> Result<(), Error>
fn read_buf_exact(&mut self, cursor: BorrowedCursor<'_>) -> Result<(), Error>
🔬This is a nightly-only experimental API. (
read_buf
)Read the exact number of bytes required to fill
cursor
. Read more1.0.0 · source§fn by_ref(&mut self) -> &mut Selfwhere
Self: Sized,
fn by_ref(&mut self) -> &mut Selfwhere
Self: Sized,
Creates a “by reference” adaptor for this instance of
Read
. Read moreAuto Trait Implementations§
impl<ReadT> Freeze for CountRead<ReadT>where
ReadT: Freeze,
impl<ReadT> RefUnwindSafe for CountRead<ReadT>where
ReadT: RefUnwindSafe,
impl<ReadT> Send for CountRead<ReadT>where
ReadT: Send,
impl<ReadT> Sync for CountRead<ReadT>where
ReadT: Sync,
impl<ReadT> Unpin for CountRead<ReadT>where
ReadT: Unpin,
impl<ReadT> UnwindSafe for CountRead<ReadT>where
ReadT: UnwindSafe,
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source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
source§impl<R> FixedIntReader for Rwhere
R: Read,
impl<R> FixedIntReader for Rwhere
R: Read,
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source§impl<R> ReadBytesExt for R
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source§fn read_u8(&mut self) -> Result<u8, Error>
fn read_u8(&mut self) -> Result<u8, Error>
Reads an unsigned 8 bit integer from the underlying reader. Read more
source§fn read_i8(&mut self) -> Result<i8, Error>
fn read_i8(&mut self) -> Result<i8, Error>
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source§fn read_u24<T>(&mut self) -> Result<u32, Error>where
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Reads an unsigned 24 bit integer from the underlying reader. Read more
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source§fn read_u32<T>(&mut self) -> Result<u32, Error>where
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source§fn read_u48<T>(&mut self) -> Result<u64, Error>where
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