Function parseNetUNIX

net_unix.go:90–122

parseNetUNIX creates a NetUnix structure from the incoming stream.

(r io.Reader)

// parseNetUNIX creates a NetUnix structure from the incoming stream.
func parseNetUNIX(r io.Reader) (*NetUNIX, error) {
	// Begin scanning by checking for the existence of Inode.
	s := bufio.NewScanner(r)
	s.Scan()

	// From the man page of proc(5), it does not contain an Inode field,
	// but in actually it exists. This code works for both cases.
	hasInode := strings.Contains(s.Text(), "Inode")

	// Expect a minimum number of fields, but Inode and Path are optional:
	// Num       RefCount Protocol Flags    Type St Inode Path
	minFields := 6
	if hasInode {
		minFields++
	}

	var nu NetUNIX
	for s.Scan() {
		line := s.Text()
		item, err := nu.parseLine(line, hasInode, minFields)
		if err != nil {
			return nil, fmt.Errorf("%w: /proc/net/unix encountered data %q: %w", ErrFileParse, line, err)
		}

		nu.Rows = append(nu.Rows, item)
	}

	if err := s.Err(); err != nil {
		return nil, fmt.Errorf("%w: /proc/net/unix encountered data: %w", ErrFileParse, err)
	}

	return &nu, nil
}

func (u *NetUNIX) parseLine(line string, hasInode bool, minFields int) (*NetUNIXLine, error) {
	fields := strings.Fields(line)