fn grep_bytes<O: Write, P: Display, B: AsRef<[u8]>>(
  out: &mut O,
  options: &args::Options,
  pattern: &Regex,
  path: P,
  buffer: B,
) -> io::Result<bool> {
  let buffer = buffer.as_ref();

  let mut write_bytes = |bs| {
    if options.print_filename {
      write!(out, "{}: ", path)?;
    }

    out.write_all(bs)?;
    writeln!(out)
  };


  let mut matched = false;

  if options.inverse {
    // `Regex::split` yields the slices outside the matches.
    let mut matches = pattern.split(buffer);

    // Set `matched` if there is a first occurrence:
    if let Some(bs) = matches.next() {
      if !bs.is_empty() { // A regex may have a empty match, but when inverse matching
        write_bytes(bs)?; // we disconsider empty intervals.
        matched = true;
      }
    };

    // Iterate the remaining matches:
    for bs in matches {
      if !bs.is_empty() {
        write_bytes(bs)?;
      }
    }
  }
  else {
    let mut matches = pattern.find_iter(buffer);

    // Set `matched` if there is a first occurrence:
    if let Some(m) = matches.next() {
      write_bytes(m.as_bytes())?;
      matched = true;
    }

    // Iterate the remaining matches:
    for m in matches {
      write_bytes(m.as_bytes())?;
    }
  };


  Ok(matched)
}
/// Run bgrep, outputting the matched bytes to the given `out`.
/// Returns whether there was a match.
Run bgrep, outputting the matched bytes to the given `out`.
Returns whether there was a match.
Run bgrep outputting the matched bytes to the given ` out ` . Returns whether there was a match .
fn grep_bytes<O: Write, P: Display, B: AsRef<[u8]>>(
  out: &mut O,
  options: &args::Options,
  pattern: &Regex,
  path: P,
  buffer: B,
) -> io::Result<bool> {
  let buffer = buffer.as_ref();
  let mut write_bytes = |bs| {
    if options.print_filename {
      write!(out, "{}: ", path)?;
    }
    out.write_all(bs)?;
    writeln!(out)
  };
  let mut matched = false;
  if options.inverse {
    // `Regex::split` yields the slices outside the matches.
    let mut matches = pattern.split(buffer);
    // Set `matched` if there is a first occurrence:
    if let Some(bs) = matches.next() {
      if !bs.is_empty() { // A regex may have a empty match, but when inverse matching
        write_bytes(bs)?; // we disconsider empty intervals.
        matched = true;
      }
    };
    // Iterate the remaining matches:
    for bs in matches {
      if !bs.is_empty() {
        write_bytes(bs)?;
      }
    }
  }
  else {
    let mut matches = pattern.find_iter(buffer);
    // Set `matched` if there is a first occurrence:
    if let Some(m) = matches.next() {
      write_bytes(m.as_bytes())?;
      matched = true;
    }
    // Iterate the remaining matches:
    for m in matches {
      write_bytes(m.as_bytes())?;
    }
  };
  Ok(matched)
}
fn grep_bytes < O : Write , P : Display , B : AsRef < [ u8 ] > > ( out : & mut O , options : & args :: Options , pattern : & Regex , path : P , buffer : B , ) -> io :: Result < bool > { let buffer = buffer . as_ref ( ) ; let mut write_bytes = | bs | { if options . print_filename { write ! ( out " " path ) ? ; } out . write_all ( bs ) ? ; writeln ! ( out ) } ; let mut matched = false ; if options . inverse { // `Regex::split` yields the slices outside the matches. let mut matches = pattern . split ( buffer ) ; // Set `matched` if there is a first occurrence: if let Some ( bs ) = matches . next ( ) { if ! bs . is_empty ( ) { // A regex may have a empty match, but when inverse matching write_bytes ( bs ) ? ; // we disconsider empty intervals. matched = true ; } } ; // Iterate the remaining matches: for bs in matches { if ! bs . is_empty ( ) { write_bytes ( bs ) ? ; } } } else { let mut matches = pattern . find_iter ( buffer ) ; // Set `matched` if there is a first occurrence: if let Some ( m ) = matches . next ( ) { write_bytes ( m . as_bytes ( ) ) ? ; matched = true ; } // Iterate the remaining matches: for m in matches { write_bytes ( m . as_bytes ( ) ) ? ; } } ; Ok ( matched ) }
Run bgrep, outputting the matched bytes to the given `out`.
Run bgrep outputting the matched bytes to the given ` out ` .
out
&mut O
options
&args::Options
pattern
&Regex
path
P
buffer
B
out
&mut O
options
&args::Options
pattern
&Regex
path
P
buffer
B