//! Various `prodash` types along with various utilities for comfort.use std::io; pub use prodash::progress::{Discard, DoOrDiscard, Either, ThroughputOnDrop};pub use prodash::{unit, Progress, Unit}; /// A unit for displaying bytes with throughput and progress percentage.pub fn bytes() -> Option<Unit> {    Some(unit::dynamic_and_mode(        unit::Bytes,        unit::display::Mode::with_throughput().and_percentage(),    ))} /// A unit for displaying human readable numbers with throughput and progress percentage.pub fn count(name: &'static str) -> Option<Unit> {    Some(unit::dynamic_and_mode(        unit::Human::new(            {                let mut f = unit::human::Formatter::new();                f.with_decimals(1);                f            },            name,        ),        unit::display::Mode::with_throughput().and_percentage(),    ))} /// A predefined unit for displaying a multi-step progresspub fn steps() -> Option<Unit> {    Some(unit::dynamic(unit::Range::new("steps")))} /// A structure passing every [`read`][std::io::Read::read()] call through to the contained Progress instance using [`inc_by(bytes_read)`][Progress::inc_by()].pub struct Read<R, P> {    /// The implementor of [`std::io::Read`] to which progress is added    pub reader: R,    /// The progress instance receiving progress information on each invocation of `reader`    pub progress: P,} impl<R, P> io::Read for Read<R, P>where    R: io::Read,    P: Progress,{    fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> {        let bytes_read = self.reader.read(buf)?;        self.progress.inc_by(bytes_read as usize);        Ok(bytes_read)    }} impl<R, P> io::BufRead for Read<R, P>where    R: io::BufRead,    P: Progress,{    fn fill_buf(&mut self) -> io::Result<&[u8]> {        self.reader.fill_buf()    }     fn consume(&mut self, amt: usize) {        self.reader.consume(amt)    }}