Struct ProgressWriter 

pub struct ProgressWriter<W> { /* private fields */ }

A Write adapter that optionally reports progress.

When progress is None, the writer is a transparent passthrough. When progress is Some:

• Construction emits DownloadStarted or ExtractStarted.
• Each write() emits DownloadProgress or ExtractProgress.
• Drop emits DownloadComplete or ExtractComplete.

Implementations

impl<W> ProgressWriter<W>

pub fn for_download( progress: Option<Arc<dyn Fn(ProgressEvent<'_>) + Send + Sync>>, inner: W, url: &Url, total_bytes: Option<u64>, ) -> ProgressWriter<W>

Creates a writer for an HTTP download.

pub fn for_extract( progress: Option<Arc<dyn Fn(ProgressEvent<'_>) + Send + Sync>>, inner: W, path: impl Into<PathBuf>, total_bytes: Option<u64>, ) -> ProgressWriter<W>

Creates a writer for archive extraction.

Trait Implementations

impl<W> Drop for ProgressWriter<W>

fn drop(&mut self)

Executes the destructor for this type.

impl<W> Write for ProgressWriter<W>

where W: Write,

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

Writes a buffer into this writer, returning how many bytes were written.

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

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.