Struct Collect

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

A reader adapter over an iterator of readers

This adapter is a generalization of std::io::Chain.

This struct is generally created by calling collect::<Collect<_>>() on an iterator of readers. Please see the documentation of collect for more details.

Trait Implementations

impl<R: BufRead> BufRead for Collect<R>

fn fill_buf(&mut self) -> Result<&[u8]>

Fills the internal buffer of this object, returning the buffer contents.

fn consume(&mut self, amt: usize)

Tells this buffer that amt bytes have been consumed from the buffer, so they should no longer be returned in calls to read.

fn read_to_end<B>(&mut self, buf: &mut B) -> Result<()>

where Self: Sized, B: Write + ?Sized,

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

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

Skip all bytes until EOF in this source.

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

Read the exact number of bytes required to fill buf.

fn bytes(self) -> Bytes<Self>

where Self: Sized,

Transforms this buffered reader into an iterator over its bytes.

fn read_until<W>(&mut self, delim: u8, buf: &mut W) -> Result<()>

where Self: Sized, W: Write + ?Sized,

Read all bytes into a buffer until a delimiter is reached.

fn skip_until(&mut self, delim: u8) -> Result<()>

Skips all bytes until a delimiter is reached.

fn split(self, byte: u8) -> Split<Self>

where Self: Sized,

Returns an iterator over the contents of this reader split on a delimiter.

impl<R: BufRead> BufRead for Collect<R>

fn fill_buf(&mut self) -> Result<&[u8]>

Returns the contents of the internal buffer, filling it with more data, via Read methods, if empty.

fn consume(&mut self, amt: usize)

Marks the given amount of additional bytes from the internal buffer as having been read. Subsequent calls to read only return bytes that have not been marked as read.

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

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

Checks if there is any data left to be read.

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

Reads all bytes into buf until the delimiter byte or EOF is reached.

fn skip_until(&mut self, byte: u8) -> Result<usize, Error>

Skips all bytes until the delimiter byte or EOF is reached.

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

Reads all bytes until a newline (the 0xA byte) is reached, and append them to the provided String buffer.

fn split(self, byte: u8) -> Split<Self>

where Self: Sized,

Returns an iterator over the contents of this reader split on the byte byte.

fn lines(self) -> Lines<Self>

where Self: Sized,

Returns an iterator over the lines of this reader.

impl<R> FromIterator<R> for Collect<R>

fn from_iter<II: IntoIterator<Item = R>>(iter: II) -> Self

Creates a value from an iterator.

impl<R: Read> Read for Collect<R>

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

where Self: Sized, R: Read,

Creates an adaptor which will chain this stream with another.

fn buffer(self) -> BufReader<Self>

where Self: Sized,

Creates a buffered reader with default capacity and default strategies

fn repeat(self) -> Repeat<Self>

where Self: Sized,

Transforms this reader into a reader that automatically restarts from the beginning after EOF is reached

impl<R: Read> Read for Collect<R>

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.