Struct WriterTask 

pub struct WriterTask<T: Write> { /* private fields */ }

A Writer Task accepts a Writer and a task and updates the task with the count of bytes written.

Implementations

impl<T: Write> WriterTask<T>

pub fn new(writer: T, task: Task) -> Self

Creates a new Writer Task

Examples found in repository

examples/progress_random_write.rs (line 29)

pub fn main() -> Result<(), Error> {
    let mut rand = Random::default();

    let cons = ConsoleProgressPrinter::new_update_rate(Duration::from_millis(100));
    let task = Task::new_infinite_named("Writer".to_string());
    cons.track_task_progress(&task);
    task.mark_started();

    let out = OpenOptions::new()
        .write(true)
        .truncate(true)
        .create(true)
        .open("test")?;
    let out = BufWriter::new(out);
    let mut out = WriterTask::new(out, task);

    let gb = 1_000_000_000 / 8;
    for _i in 0..gb {
        out.write_be_u64(rand.next_u64())?;
    }

    Ok(())
}

Trait Implementations

impl<T: Write> Drop for WriterTask<T>

fn drop(&mut self)

Executes the destructor for this type.

impl<T: Write> MutBits for WriterTask<T>

fn write_u8(&mut self, val: u8) -> Result<(), Error>

Writes a single u8

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

Writes all the bytes in order

fn write_i8(&mut self, val: i8) -> Result<(), BitsError>

Writes a single i8

fn write_bool(&mut self, val: bool) -> Result<(), BitsError>

Writes 1u8 if true, 0u8 if false

fn write_be_utf8_char(&mut self, val: char) -> Result<usize, BitsError>

Encodes the character as UTF-8, and writes anywhere from 1-4 bytes. The number of bytes written is returned.

fn write_be_u16(&mut self, val: u16) -> Result<(), BitsError>

Writes a single u16 in big-endian order, 2 bytes, MSB first.

fn write_le_u16(&mut self, val: u16) -> Result<(), BitsError>

Writes a single u16 in little-endian order, 2 bytes, LSB first.

fn write_be_u32(&mut self, val: u32) -> Result<(), BitsError>

Writes a single u32 in big-endian order, 4 bytes, MSB first.

fn write_le_u32(&mut self, val: u32) -> Result<(), BitsError>

Writes a single u32 in little-endian order, 4 bytes, LSB first.

fn write_be_u64(&mut self, val: u64) -> Result<(), BitsError>

Writes a single u64 in big-endian order, 8 bytes, MSB first.

fn write_le_u64(&mut self, val: u64) -> Result<(), BitsError>

Writes a single u64 in little-endian order, 8 bytes, LSB first.

fn write_be_u128(&mut self, val: u128) -> Result<(), BitsError>

Writes a single u128 in big-endian order, 16 bytes, MSB first.

fn write_le_u128(&mut self, val: u128) -> Result<(), BitsError>

Writes a single u128 in little-endian order, 16 bytes, LSB first.

fn write_be_f32(&mut self, val: f32) -> Result<(), BitsError>

Writes a single f32 in standard IEEE754 format, 4 bytes

fn write_le_f32(&mut self, val: f32) -> Result<(), BitsError>

Writes a single f32 in reversed IEEE754 format, 4 bytes

fn write_be_f64(&mut self, val: f64) -> Result<(), BitsError>

Writes a single u16 in standard IEEE754 format, 8 bytes

fn write_le_f64(&mut self, val: f64) -> Result<(), BitsError>

Writes a single u16 in reversed IEEE754 format, 8 bytes

fn write_be_i16(&mut self, val: i16) -> Result<(), BitsError>

Writes a single i16 in big-endian order, 2 bytes, MSB first.

fn write_le_i16(&mut self, val: i16) -> Result<(), BitsError>

Writes a single i16 in little-endian order, 2 bytes, LSB first.

fn write_be_i32(&mut self, val: i32) -> Result<(), BitsError>

Writes a single i32 in big-endian order, 4 bytes, MSB first.

fn write_le_i32(&mut self, val: i32) -> Result<(), BitsError>

Writes a single i32 in little-endian order, 4 bytes, LSB first.

fn write_be_i64(&mut self, val: i64) -> Result<(), BitsError>

Writes a single i64 in big-endian order, 8 bytes, MSB first.

fn write_le_i64(&mut self, val: i64) -> Result<(), BitsError>

Writes a single i64 in little-endian order, 8 bytes, LSB first.

fn write_be_i128(&mut self, val: i128) -> Result<(), BitsError>

Writes a single i128 in big-endian order, 16 bytes, MSB first.

fn write_le_i128(&mut self, val: i128) -> Result<(), BitsError>

Writes a single i128 in little-endian order, 16 bytes, LSB first.

fn write_u8_blob(&mut self, val: &[u8]) -> Result<(), BitsError>

Writes a sized blob, a series of bytes preceded by a u8 declaring the size

fn write_be_u16_blob(&mut self, val: &[u8]) -> Result<(), BitsError>

Writes a sized blob, a series of bytes preceded by a u16 declaring the size

fn write_le_u16_blob(&mut self, val: &[u8]) -> Result<(), BitsError>

Writes a sized blob, a series of bytes preceded by a u16 declaring the size

fn write_be_u32_blob(&mut self, val: &[u8]) -> Result<(), BitsError>

Writes a sized blob, a series of bytes preceded by a u32 declaring the size

fn write_le_u32_blob(&mut self, val: &[u8]) -> Result<(), BitsError>

Writes a sized blob, a series of bytes preceded by a u32 declaring the size

fn write_be_u64_blob(&mut self, val: &[u8]) -> Result<(), BitsError>

Writes a sized blob, a series of bytes preceded by a u64 declaring the size

fn write_le_u64_blob(&mut self, val: &[u8]) -> Result<(), BitsError>

Writes a sized blob, a series of bytes preceded by a u64 declaring the size

fn write_fmt_impl(&mut self, args: Arguments<'_>) -> Result<(), BitsError>

Allows the use of core::format_args macro

fn write_some_bytes(&mut self, val: &[u8]) -> usize

Writes some subset of bytes until either the input is exhausted, or the underlying buffer fills up or errors. Returns the total number of bytes written

fn write_str_u32_blob(&mut self, val: &str) -> Result<usize, BitsError>

Writes a specific sized string from the stream, a string prefixed by a 4-byte big-endian length.

fn write_exact(&mut self, val: &[u8], len: usize) -> Result<(), BitsError>

Writes the exact amount of bytes from the input buffer to the output stream Returns an error if the buffer doesn’t have enough values or if the output stream errors.

fn write_all_into_self_from<T>( &mut self, other: &mut T, ) -> Result<u64, BitsError>

where T: Bits,

Copies all data from the other stream into this stream.

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

Flush all bytes out of the cache. Most impl’s won’t need this.

impl<T: Write> Write for WriterTask<T>

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.