Struct DecodeWriter 

pub struct DecodeWriter<W: Write, const N: usize> { /* private fields */ }

A buffered writer that decodes encoded bytes before writing them to an inner writer.

This writer buffers encoded characters, decodes them using the specified Encoding<N>, and writes the decoded output to the wrapped writer. It implements io::Write, allowing transparent decoding of data streams.

Only complete encoding groups are decoded during normal writes. Incomplete groups are kept in the buffer until flush is called, at which point they are decoded (potentially with padding handling for base64/base32).

Examples

use std::io::Write;

use omp_core::encoding::{DecodeWriter, base64};

let mut output = Vec::new();
let mut writer = base64::decode_writer(&mut output);
writer.write_all(b"SGVsbG8sIFdvcmxkIQ==").unwrap();
writer.flush().unwrap();
drop(writer);
assert_eq!(output, b"Hello, World!");

Implementations

impl<W: Write, const N: usize> DecodeWriter<W, N>

pub const fn new(inner: W, enc: Encoding<N>) -> Self

Creates a new decoding writer that wraps the given writer.

pub fn into_inner(self) -> Result<W>

Consumes this writer, flushing any buffered data and returning the inner writer.

Errors

Returns an error if flushing or decoding fails.

Trait Implementations

impl<W: Write, const N: usize> Drop for DecodeWriter<W, N>

fn drop(&mut self)

Executes the destructor for this type.

fn pin_drop(self: Pin<&mut Self>)

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

Execute the destructor for this type, but different to Drop::drop, it requires self to be pinned.

impl<W: Write, const N: usize> Write for DecodeWriter<W, N>

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.