Struct zeros::HashWriter

pub struct HashWriter<W> where
    W: Write,  { /* fields omitted */ }

👎 Deprecated:

Beta

Hash Writer

Notes

• You can make this struct via Hash.

• For each call to write():

  • The inner writer will be called first. If an error occurs, it will be returned. The hasher will not be updated.
  • Then the hasher will be updated.

Examples

use {
    std::io::Write,
    zeros::Hash,
};

const DATA: &[u8] = b"test";
const HASH: Hash = Hash::Sha3_512;

let mut writer = HASH.new_writer(Vec::new());
writer.write_all(DATA)?;

let (hash, mut buf) = writer.finish();
buf.flush()?;

assert_eq!(hash, HASH.hash(DATA));
assert_eq!(buf, DATA);

Implementations

impl<W> HashWriter<W> where
    W: Write, 

pub fn finish(self) -> (Vec<u8>, W)

👎 Deprecated:

Beta

Finishes and returns hash and the inner writer

The inner writer will not be flushed.

pub fn finish_as_hex(self) -> (String, W)

👎 Deprecated:

Beta

Finishes and returns hash as a hexadecimal string, in lower-case, and the inner writer

The inner writer will not be flushed.

Trait Implementations

impl<W: Debug> Debug for HashWriter<W> where
    W: Write, 

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

Formats the value using the given formatter.

impl<W> Write for HashWriter<W> where
    W: Write, 

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

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

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

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

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

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

pub 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.

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

Attempts to write an entire buffer into this writer.

pub 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.

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

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

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

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