Struct HashWriter 

pub struct HashWriter<D: Digest, W: Write> { /* private fields */ }

Abstraction over a writer which hashes the data being written.

Implementations

impl<D: Digest, W: Write> HashWriter<D, W>

pub fn new(writer: W) -> Self

Construct a new HashWriter given an existing writer by value.

pub fn new_from_parts(hasher: D, writer: W) -> Self

Construct a new HashWriter given an existing hasher and writer by value.

pub fn replace_writer(&mut self, writer: W)

Replace the writer with another writer

pub fn get_hasher(&self) -> &D

Gets a reference to the underlying hasher

pub fn get_writer(&self) -> &W

Gets a reference to the underlying writer

pub fn get_hasher_mut(&mut self) -> &mut D

Gets a mutable reference to the underlying hasher Updates to the digest are not written to the underlying writer

pub fn get_writer_mut(&mut self) -> &mut W

Gets a mutable reference to the underlying writer Direct writes to the underlying writer are not hashed

pub fn into_hasher(self) -> D

Consume the HashWriter and return its hasher

pub fn into_inner_writer(self) -> W

Consume the HashWriter and return its internal writer

pub fn into_parts(self) -> (D, W)

Consume the HashWriter and return its hasher and internal writer

pub fn finalize(self) -> Output<D>

Retrieve result and consume HashWriter instance.

pub fn finalize_into(self, out: &mut Output<D>)

Write result into provided array and consume the HashWriter instance.

pub fn output_size() -> usize

Get output size of the hasher

impl<D: Digest + FixedOutputReset, W: Write> HashWriter<D, W>

pub fn finalize_reset(&mut self) -> Output<D>

Retrieve result and reset hasher instance.

pub fn finalize_into_reset(&mut self, out: &mut Output<D>)

Write result into provided array and reset the hasher instance.

Trait Implementations

impl<D: Digest + Clone, W: Write + Clone> Clone for HashWriter<D, W>

fn clone(&self) -> HashWriter<D, W>

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<D: Debug + Digest, W: Debug + Write> Debug for HashWriter<D, W>

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

Formats the value using the given formatter.

impl<D: Digest + Reset, W: Write> Reset for HashWriter<D, W>

fn reset(&mut self)

Reset state to its initial value.

impl<D: Digest, W: Write> Write for HashWriter<D, W>

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

Writes a buffer into this writer, returning how many bytes were written.

fn flush(&mut self) -> Result<()>

Flushes this output stream, ensuring that all intermediately buffered contents reach their destination.

fn write_vectored(&mut self, bufs: &[IoSlice<'_>]) -> Result<usize, Error>

Like write, except that it writes from a slice of buffers.

fn is_write_vectored(&self) -> bool

🔬This is a nightly-only experimental API. (can_vector)

Determines if this Writer has an efficient write_vectored implementation.

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

Attempts to write an entire buffer into this writer.

fn write_all_vectored(&mut self, bufs: &mut [IoSlice<'_>]) -> Result<(), Error>

🔬This is a nightly-only experimental API. (write_all_vectored)

Attempts to write multiple buffers into this writer.

fn write_fmt(&mut self, args: Arguments<'_>) -> Result<(), Error>

Writes a formatted string into this writer, returning any error encountered.

fn by_ref(&mut self) -> &mut Self

where Self: Sized,

Creates a “by reference” adapter for this instance of Write.