Struct PDataReader

pub struct PDataReader<R> { /* private fields */ }

A P-Data value reader.

This exposes an API which provides a byte stream of data by iteratively collecting Data messages from another node. Using this as a standard reader will provide all incoming bytes, even if they reside in separate PDUs, until the last message is received.

Example

Use an association’s receive_pdata method to create a new P-Data value reader.

// expecting a DICOM object which may be split into multiple PDUs,
let mut pdata = association.receive_pdata();
let all_pdata_bytes = {
    let mut v = Vec::new();
    pdata.read_to_end(&mut v)?;
    v
};

Implementations

impl<R> PDataReader<R>

where R: Read,

pub fn new(stream: R, max_data_length: u32) -> Self

pub fn stop_receiving(&mut self) -> Result<()>

Declare no intention to read more PDUs from the remote node.

Attempting to read more bytes will only consume the inner buffer and not result in more PDUs being received.

Trait Implementations

impl<R> Read for PDataReader<R>

where R: Read,

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.

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

Like read, except that it reads into a slice of buffers.

fn is_read_vectored(&self) -> bool

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

Determines if this Reader has an efficient read_vectored implementation.

fn read_to_end(&mut self, buf: &mut Vec<u8>) -> Result<usize, Error>

Reads all bytes until EOF in this source, placing them into buf.

fn read_to_string(&mut self, buf: &mut String) -> Result<usize, Error>

Reads all bytes until EOF in this source, appending them to buf.

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

Reads the exact number of bytes required to fill buf.

fn read_buf(&mut self, buf: BorrowedCursor<'_>) -> Result<(), Error>

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

Pull some bytes from this source into the specified buffer.

fn read_buf_exact(&mut self, cursor: BorrowedCursor<'_>) -> Result<(), Error>

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

Reads the exact number of bytes required to fill cursor.

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

where Self: Sized,

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

fn bytes(self) -> Bytes<Self>

where Self: Sized,

Transforms this Read instance to an Iterator over its bytes.

fn chain<R>(self, next: R) -> Chain<Self, R>

where R: Read, Self: Sized,

Creates an adapter which will chain this stream with another.

fn take(self, limit: u64) -> Take<Self>

where Self: Sized,

Creates an adapter which will read at most limit bytes from it.