Struct nue_io::Region
[−]
[src]
pub struct Region<T> { /* fields omitted */ }
Creates an isolated segment of an underlying stream.
Seeks past the region will be capped, and reaching the end of the region will result in EOF when reading or writing.
Methods
impl<T> Region<T>
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fn new(inner: T, start: u64, end: u64) -> Self
Creates a new Region
at the specified offsets of inner
.
fn region(&self) -> (u64, u64)
Returns the region bounds.
fn into_inner(self) -> T
Unwraps the Region
to return the inner stream.
Trait Implementations
impl<T: Read + Tell + SeekAbsolute> Read for Region<T>
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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
fn read_to_end(&mut self, buf: &mut Vec<u8>) -> Result<usize, Error>
1.0.0
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
Read all bytes until EOF in this source, placing them into buf
. Read more
fn read_exact(&mut self, buf: &mut [u8]) -> Result<(), Error>
1.6.0
Read the exact number of bytes required to fill buf
. Read more
fn by_ref(&mut self) -> &mut Self
1.0.0
Creates a "by reference" adaptor for this instance of Read
. Read more
fn bytes(self) -> Bytes<Self>
1.0.0
Transforms this Read
instance to an Iterator
over its bytes. Read more
fn chars(self) -> Chars<Self>
🔬 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
R: Read,
Creates an adaptor which will chain this stream with another. Read more
fn take(self, limit: u64) -> Take<Self>
1.0.0
Creates an adaptor which will read at most limit
bytes from it. Read more
impl<T: Write + Tell + SeekAbsolute> Write for Region<T>
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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<()>
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
Attempts to write an entire buffer into this write. Read more
fn write_fmt(&mut self, fmt: Arguments) -> Result<(), Error>
1.0.0
Writes a formatted string into this writer, returning any error encountered. Read more
fn by_ref(&mut self) -> &mut Self
1.0.0
Creates a "by reference" adaptor for this instance of Write
. Read more
impl<T: SeekAbsolute> SeekAbsolute for Region<T>
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fn seek_absolute(&mut self, pos: u64) -> Result<u64>
Seeks to the specified position in the stream. Read more
impl<T: SeekForward + Tell + SeekAbsolute> SeekForward for Region<T>
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fn seek_forward(&mut self, offset: u64) -> Result<u64>
Seeks forward in the stream. Read more
impl<T: Tell + SeekBackward> SeekBackward for Region<T>
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fn seek_backward(&mut self, offset: u64) -> Result<u64>
Seeks backward in the stream. Read more
impl<T: SeekAbsolute> SeekRewind for Region<T>
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fn seek_rewind(&mut self) -> Result<()>
Seeks back to the beginning of the stream. Read more
impl<T: SeekAbsolute> SeekEnd for Region<T>
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fn seek_end(&mut self, offset: i64) -> Result<u64>
Seeks to the end of the stream + offset
. Read more
impl<T: Tell> Tell for Region<T>
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impl<T: BufRead + Tell + SeekAbsolute> BufRead for Region<T>
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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)
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
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
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
Returns an iterator over the contents of this reader split on the byte byte
. Read more
fn lines(self) -> Lines<Self>
1.0.0
Returns an iterator over the lines of this reader. Read more