Struct fscommon::BufStream [−][src]
The BufStream
struct adds buffering to underlying file or device.
It is basically composition of BufReader
and BufWritter
.
Buffer size is fixed to 512 to avoid dynamic allocation.
BufStream
automatically flushes itself when being dropped.
Methods
impl<T: Read + Write + Seek> BufStream<T>
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impl<T: Read + Write + Seek> BufStream<T>
Trait Implementations
impl<T: Read + Write + Seek> BufRead for BufStream<T>
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impl<T: Read + Write + Seek> BufRead for BufStream<T>
fn fill_buf(&mut self) -> Result<&[u8]>
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fn fill_buf(&mut self) -> Result<&[u8]>
Fills the internal buffer of this object, returning the buffer contents. Read more
fn consume(&mut self, amt: usize)
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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
. Read more
fn read_until(&mut self, byte: u8, buf: &mut Vec<u8>) -> Result<usize, Error>
1.0.0[src]
fn read_until(&mut self, byte: u8, buf: &mut Vec<u8>) -> Result<usize, Error>
Read all bytes into buf
until the delimiter byte
or EOF is reached. Read more
fn read_line(&mut self, buf: &mut String) -> Result<usize, Error>
1.0.0[src]
fn read_line(&mut self, buf: &mut String) -> Result<usize, Error>
Read all bytes until a newline (the 0xA byte) is reached, and append them to the provided buffer. Read more
fn split(self, byte: u8) -> Split<Self>
1.0.0[src]
fn split(self, byte: u8) -> Split<Self>
Returns an iterator over the contents of this reader split on the byte byte
. Read more
fn lines(self) -> Lines<Self>
1.0.0[src]
fn lines(self) -> Lines<Self>
Returns an iterator over the lines of this reader. Read more
impl<T: Read + Write + Seek> Read for BufStream<T>
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impl<T: Read + Write + Seek> Read for BufStream<T>
fn read(&mut self, buf: &mut [u8]) -> Result<usize>
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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. Read more
unsafe fn initializer(&self) -> Initializer
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unsafe fn initializer(&self) -> Initializer
read_initializer
)Determines if this Read
er can work with buffers of uninitialized memory. Read more
fn read_to_end(&mut self, buf: &mut Vec<u8>) -> Result<usize, Error>
1.0.0[src]
fn read_to_end(&mut self, buf: &mut Vec<u8>) -> Result<usize, Error>
Read all bytes until EOF in this source, placing them into buf
. Read more
fn read_to_string(&mut self, buf: &mut String) -> Result<usize, Error>
1.0.0[src]
fn read_to_string(&mut self, buf: &mut String) -> Result<usize, Error>
Read all bytes until EOF in this source, appending them to buf
. Read more
fn read_exact(&mut self, buf: &mut [u8]) -> Result<(), Error>
1.6.0[src]
fn read_exact(&mut self, buf: &mut [u8]) -> Result<(), Error>
Read the exact number of bytes required to fill buf
. Read more
fn by_ref(&mut self) -> &mut Self
1.0.0[src]
fn by_ref(&mut self) -> &mut Self
Creates a "by reference" adaptor for this instance of Read
. Read more
fn bytes(self) -> Bytes<Self>
1.0.0[src]
fn bytes(self) -> Bytes<Self>
Transforms this Read
instance to an [Iterator
] over its bytes. Read more
fn chars(self) -> Chars<Self>
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fn chars(self) -> Chars<Self>
: Use str::from_utf8 instead: https://doc.rust-lang.org/nightly/std/str/struct.Utf8Error.html#examples
🔬 This is a nightly-only experimental API. (io
)
the semantics of a partial read/write of where errors happen is currently unclear and may change
Transforms this Read
instance to an [Iterator
] over [char
]s. Read more
fn chain<R>(self, next: R) -> Chain<Self, R> where
R: Read,
1.0.0[src]
fn chain<R>(self, next: R) -> Chain<Self, R> where
R: Read,
Creates an adaptor which will chain this stream with another. Read more
fn take(self, limit: u64) -> Take<Self>
1.0.0[src]
fn take(self, limit: u64) -> Take<Self>
Creates an adaptor which will read at most limit
bytes from it. Read more
impl<T: Read + Write + Seek> Write for BufStream<T>
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impl<T: Read + Write + Seek> Write for BufStream<T>
fn write(&mut self, buf: &[u8]) -> Result<usize>
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fn write(&mut self, buf: &[u8]) -> Result<usize>
Write a buffer into this object, returning how many bytes were written. Read more
fn flush(&mut self) -> Result<()>
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fn flush(&mut self) -> Result<()>
Flush this output stream, ensuring that all intermediately buffered contents reach their destination. Read more
fn write_all(&mut self, buf: &[u8]) -> Result<(), Error>
1.0.0[src]
fn write_all(&mut self, buf: &[u8]) -> Result<(), Error>
Attempts to write an entire buffer into this write. Read more
fn write_fmt(&mut self, fmt: Arguments) -> Result<(), Error>
1.0.0[src]
fn write_fmt(&mut self, fmt: Arguments) -> Result<(), Error>
Writes a formatted string into this writer, returning any error encountered. Read more
fn by_ref(&mut self) -> &mut Self
1.0.0[src]
fn by_ref(&mut self) -> &mut Self
Creates a "by reference" adaptor for this instance of Write
. Read more
impl<T: Read + Write + Seek> Seek for BufStream<T>
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impl<T: Read + Write + Seek> Seek for BufStream<T>
fn seek(&mut self, pos: SeekFrom) -> Result<u64>
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fn seek(&mut self, pos: SeekFrom) -> Result<u64>
Seek to an offset, in bytes, in a stream. Read more
impl<T: Read + Write + Seek> Drop for BufStream<T>
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impl<T: Read + Write + Seek> Drop for BufStream<T>