fn grep_filename<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();

  // When inverse matching, matches must be checked until a "hole" is found.
  // Otherwise, the more performant `Regex::is_match` can be used.
  if options.inverse {
    // if the pattern matches multiple times, comprising the entire buffer, then no
    // inverse match is present.
    let mut matches = pattern.find_iter(buffer);

    let mut end = 0; // Start from the beginning of the buffer.

    // Try to find a "hole" between matches:
    let inverse_match = matches.find(
      |m| {
        let matched = m.start() > end;

        end = m.end();

        matched
      }
    );

    // Also check for a "hole" after the last match.
    let matched = (inverse_match.is_some() || end < buffer.len())
                ^ options.non_matching; // List non matching files.

    if matched {
      writeln!(out, "{}", path)?;
    }

    Ok(matched)
  }
  else {
    let matched = pattern.is_match(buffer) ^ options.non_matching;

    if matched {
      writeln!(out, "{}", path)?;
    }

    Ok(matched)
  }
}
/// Run bgrep, outputting `path` to the given `out` if there is a match.
/// Returns whether there was a match.
Run bgrep, outputting `path` to the given `out` if there is a match.
Returns whether there was a match.
Run bgrep outputting ` path ` to the given ` out ` if there is a match . Returns whether there was a match .
fn grep_filename<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();
  // When inverse matching, matches must be checked until a "hole" is found.
  // Otherwise, the more performant `Regex::is_match` can be used.
  if options.inverse {
    // if the pattern matches multiple times, comprising the entire buffer, then no
    // inverse match is present.
    let mut matches = pattern.find_iter(buffer);
    let mut end = 0; // Start from the beginning of the buffer.
    // Try to find a "hole" between matches:
    let inverse_match = matches.find(
      |m| {
        let matched = m.start() > end;
        end = m.end();
        matched
      }
    );
    // Also check for a "hole" after the last match.
    let matched = (inverse_match.is_some() || end < buffer.len())
                ^ options.non_matching; // List non matching files.
    if matched {
      writeln!(out, "{}", path)?;
    }
    Ok(matched)
  }
  else {
    let matched = pattern.is_match(buffer) ^ options.non_matching;
    if matched {
      writeln!(out, "{}", path)?;
    }
    Ok(matched)
  }
}
fn grep_filename < 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 ( ) ; // When inverse matching, matches must be checked until a "hole" is found. // Otherwise, the more performant `Regex::is_match` can be used. if options . inverse { // if the pattern matches multiple times, comprising the entire buffer, then no // inverse match is present. let mut matches = pattern . find_iter ( buffer ) ; let mut end = 0 ; // Start from the beginning of the buffer. // Try to find a "hole" between matches: let inverse_match = matches . find ( | m | { let matched = m . start ( ) > end ; end = m . end ( ) ; matched } ) ; // Also check for a "hole" after the last match. let matched = ( inverse_match . is_some ( ) || end < buffer . len ( ) ) ^ options . non_matching ; // List non matching files. if matched { writeln ! ( out " " path ) ? ; } Ok ( matched ) } else { let matched = pattern . is_match ( buffer ) ^ options . non_matching ; if matched { writeln ! ( out " " path ) ? ; } Ok ( matched ) } }
Run bgrep, outputting `path` to the given `out` if there is a match.
Run bgrep outputting ` path ` to the given ` out ` if there is a match .
out
&mut O
options
&args::Options
pattern
&Regex
path
P
buffer
B
out
&mut O
options
&args::Options
pattern
&Regex
path
P
buffer
B