Enum StreamType

pub enum StreamType<R, W, RW>
where
    R: Read + Seek + Debug,
    W: Write + Seek + Debug,
    RW: Read + Write + Seek + Debug,
{
    Reader(R),
    Writer(W),
    ReadWrite(RW),
    CursorU8(CursorVecU8),
}

• The StreamType<R, W, RW> is for the MultistreamIO<R, W, RW> to manage multiple IO objects.
• A stream can be a reader, writer, reader + writer, or cursor.
• By using the MultistreamIO<R, W, RW> you can control the 3rd party library to write data into different streams and manipulate them.

Variants

Reader(R)

• The Read + Seek + Debug

Writer(W)

• The Write + Seek + Debug

ReadWrite(RW)

• The Read + Write + Seek + Debug, better use it with the tempfile()

CursorU8(CursorVecU8)

• The Read + Write + Seek + Debug cursor.

Implementations

impl<R, W, RW> StreamType<R, W, RW>

where R: Read + Seek + Debug, W: Write + Seek + Debug, RW: Read + Write + Seek + Debug,

pub fn as_reader(&mut self) -> &mut R

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

pub fn as_readwrite(&mut self) -> &mut RW

pub fn as_cursor(&mut self) -> &mut CursorVecU8

pub fn take_cursor_data(&mut self) -> Vec<u8>

• Take the cursor data, leaving an empty cursor here.

Trait Implementations

impl<R, W, RW> Debug for StreamType<R, W, RW>

where R: Read + Seek + Debug + Debug, W: Write + Seek + Debug + Debug, RW: Read + Write + Seek + Debug + Debug,

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

Formats the value using the given formatter.

impl<R, W, RW> Read for StreamType<R, W, RW>

where R: Read + Seek + Debug, W: Write + Seek + Debug, RW: Read + Write + Seek + Debug,

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.

impl<R, W, RW> Seek for StreamType<R, W, RW>

where R: Read + Seek + Debug, W: Write + Seek + Debug, RW: Read + Write + Seek + Debug,

fn seek(&mut self, pos: SeekFrom) -> Result<u64>

Seek to an offset, in bytes, in a stream.

fn rewind(&mut self) -> Result<(), Error>

Rewind to the beginning of a stream.

fn stream_len(&mut self) -> Result<u64, Error>

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

Returns the length of this stream (in bytes).

fn stream_position(&mut self) -> Result<u64, Error>

Returns the current seek position from the start of the stream.

fn seek_relative(&mut self, offset: i64) -> Result<(), Error>

Seeks relative to the current position.

impl<R, W, RW> Write for StreamType<R, W, RW>

where R: Read + Seek + Debug, W: Write + Seek + Debug, RW: Read + Write + Seek + Debug,

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.