fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
        let now = Instant::now();
        let start_duration = (self.formatter)(&now.duration_since(self.start));
        let line_duration = (self.formatter)(&now.duration_since(self.last));

        let pfx_start = format!(
            "{:>8} {:>8} {} ",
            start_duration, line_duration, self.separator
        );
        let pfx_rest = format!(
            "{:>8} {:>8} {} ",
            start_duration,
            (self.formatter)(&Duration::new(0, 0)),
            self.separator
        );

        let mut pos: usize = 0;
        let mut saw_eol = false;
        let mut first = true;

        let n = buf.len();

        while pos < n {
            if self.at_eol {
                if first {
                    self.inner.write_all(pfx_start.as_bytes())?;
                    first = false;
                } else {
                    self.inner.write_all(pfx_rest.as_bytes())?;
                }
            }

            if let Some(newline) = memchr(b'\n', &buf[pos..n]) {
                saw_eol = true;
                self.at_eol = true;
                self.inner.write_all(&buf[pos..=pos + newline])?;
                pos += newline + 1;
            } else {
                self.at_eol = false;
                self.inner.write_all(&buf[pos..n])?;
                break;
            }
        }

        self.inner.flush()?;

        if saw_eol {
            self.last = now;
        }

        Ok(n)
    }
/// Writes the contents of `buf` to the underlying writer, with time annotations
/// for any new lines.
Writes the contents of `buf` to the underlying writer, with time annotations
for any new lines.
Writes the contents of ` buf ` to the underlying writer with time annotations for any new lines .
fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
        let now = Instant::now();
        let start_duration = (self.formatter)(&now.duration_since(self.start));
        let line_duration = (self.formatter)(&now.duration_since(self.last));
        let pfx_start = format!(
            "{:>8} {:>8} {} ",
            start_duration, line_duration, self.separator
        );
        let pfx_rest = format!(
            "{:>8} {:>8} {} ",
            start_duration,
            (self.formatter)(&Duration::new(0, 0)),
            self.separator
        );
        let mut pos: usize = 0;
        let mut saw_eol = false;
        let mut first = true;
        let n = buf.len();
        while pos < n {
            if self.at_eol {
                if first {
                    self.inner.write_all(pfx_start.as_bytes())?;
                    first = false;
                } else {
                    self.inner.write_all(pfx_rest.as_bytes())?;
                }
            }
            if let Some(newline) = memchr(b'\n', &buf[pos..n]) {
                saw_eol = true;
                self.at_eol = true;
                self.inner.write_all(&buf[pos..=pos + newline])?;
                pos += newline + 1;
            } else {
                self.at_eol = false;
                self.inner.write_all(&buf[pos..n])?;
                break;
            }
        }
        self.inner.flush()?;
        if saw_eol {
            self.last = now;
        }
        Ok(n)
    }
fn write ( & mut self , buf : & [ u8 ] ) -> io :: Result < usize > { let now = Instant :: now ( ) ; let start_duration = ( self . formatter ) ( & now . duration_since ( self . start ) ) ; let line_duration = ( self . formatter ) ( & now . duration_since ( self . last ) ) ; let pfx_start = format ! ( " " start_duration line_duration self separator ) ; let pfx_rest = format ! ( " " start_duration ( self formatter ) ( Duration new ( 0 0 ) ) self separator ) ; let mut pos : usize = 0 ; let mut saw_eol = false ; let mut first = true ; let n = buf . len ( ) ; while pos < n { if self . at_eol { if first { self . inner . write_all ( pfx_start . as_bytes ( ) ) ? ; first = false ; } else { self . inner . write_all ( pfx_rest . as_bytes ( ) ) ? ; } } if let Some ( newline ) = memchr ( b'\n' , & buf [ pos .. n ] ) { saw_eol = true ; self . at_eol = true ; self . inner . write_all ( & buf [ pos ..= pos + newline ] ) ? ; pos += newline + 1 ; } else { self . at_eol = false ; self . inner . write_all ( & buf [ pos .. n ] ) ? ; break ; } } self . inner . flush ( ) ? ; if saw_eol { self . last = now ; } Ok ( n ) }
Writes the contents of `buf` to the underlying writer, with time annotations
for any new lines.
Writes the contents of ` buf ` to the underlying writer with time annotations for any new lines .
&mut self
buf
&[u8]