Struct futures_glib::IoChannel

pub struct IoChannel { /* fields omitted */ }

Wrapper around the underlying glib GIOChannel type

Methods

impl IoChannel

fn unix_new(fd: RawFd) -> Self

fn buffer_size(&self) -> usize

Gets the internal buffer size.

fn set_buffer_size(&self, size: usize)

Sets the buffer size.

If 0, then glib will pick a good size.

fn is_buffered(&self) -> bool

Returns whether this channel is buffered.

fn set_buffered(&self, buffered: bool)

Sets whether this channel is buffered or not.

The buffering state can only be set if the channel's encoding is null. For any other encoding, the channel must be buffered.

A buffered channel can only be set unbuffered if the channel's internal buffers have been flushed. Newly created channels or channels which have returned G_IO_STATUS_EOF don't require such a flush. For write-only channels, a call to `flush is sufficient. Note that this means that socket-based channels cannot be set unbuffered once they have had data read from them.

The default state of the channel is buffered.

fn is_close_on_drop(&self) -> bool

Returns whether the file/socket/whatever associated with channel will be closed when channel receives its final unref and is destroyed.

The default value of this is true for channels created by g_io_channel_new_file(), and false for all other channels.

fn set_close_on_drop(&self, close: bool)

Sets whether this channel will close the underlying I/O object whent he last reference goes out of scope.

Setting this flag to true for a channel you have already closed can cause problems.

fn close(&self, flush: bool) -> Result<()>

Close an IO channel.

Any pending data to be written will be flushed if flush is true. The channel will not be freed until the last reference is dropped.

fn create_watch(&self, condition: &IoCondition) -> Source<IoChannelFuncs>

Creates a Source that's dispatched when condition is met for the given channel. For example, if condition is G_IO_IN, the source will be dispatched when there's data available for reading.

On Windows, polling a Source created to watch a channel for a socket puts the socket in non-blocking mode. This is a side-effect of the implementation and unavoidable.

fn encoding(&self) -> Option<&str>

Gets the encoding for the input/output of the channel.

The internal encoding is always UTF-8. The encoding None makes the channel safe for binary data.

fn set_encoding(&self, encoding: Option<&str>) -> Result<()>

Sets the encoding for the input/output of the channel. The internal encoding is always UTF-8. The default encoding for the external file is UTF-8.

The encoding None is safe to use with binary data.

Trait Implementations

impl AsRawFd for IoChannel

fn as_raw_fd(&self) -> RawFd

Extracts the raw file descriptor.

impl Send for IoChannel

impl Read for IoChannel

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.

unsafe fn initializer(&self) -> Initializer

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

Determines if this Reader can work with buffers of uninitialized memory.

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.

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

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

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

Read the exact number of bytes required to fill buf.

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

Creates a "by reference" adaptor for this instance of Read.

fn bytes(self) -> Bytes<Self>

Transforms this Read instance to an Iterator over its bytes.

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 chars.

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

Creates an adaptor which will chain this stream with another.

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

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

impl<'a> Read for &'a IoChannel

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.

unsafe fn initializer(&self) -> Initializer

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

Determines if this Reader can work with buffers of uninitialized memory.

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.

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

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

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

Read the exact number of bytes required to fill buf.

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

Creates a "by reference" adaptor for this instance of Read.

fn bytes(self) -> Bytes<Self>

Transforms this Read instance to an Iterator over its bytes.

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 chars.

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

Creates an adaptor which will chain this stream with another.

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

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

impl Write for IoChannel

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

Write a buffer into this object, returning how many bytes were written.

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

Flush this output stream, ensuring that all intermediately buffered contents reach their destination.

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

Attempts to write an entire buffer into this write.

fn write_fmt(&mut self, fmt: Arguments) -> Result<(), Error>

Writes a formatted string into this writer, returning any error encountered.

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

Creates a "by reference" adaptor for this instance of Write.

impl<'a> Write for &'a IoChannel

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

Write a buffer into this object, returning how many bytes were written.

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

Flush this output stream, ensuring that all intermediately buffered contents reach their destination.

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

Attempts to write an entire buffer into this write.

fn write_fmt(&mut self, fmt: Arguments) -> Result<(), Error>

Writes a formatted string into this writer, returning any error encountered.

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

Creates a "by reference" adaptor for this instance of Write.

impl From<TcpStream> for IoChannel

fn from(socket: TcpStream) -> IoChannel

Performs the conversion.

impl Clone for IoChannel

fn clone(&self) -> IoChannel

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Drop for IoChannel

fn drop(&mut self)

A method called when the value goes out of scope.