Function parseInterrupts

proc_interrupts.go:52–98

(r io.Reader)

}

func parseInterrupts(r io.Reader) (Interrupts, error) {
	var (
		interrupts = Interrupts{}
		scanner    = bufio.NewScanner(r)
	)

	if !scanner.Scan() {
		return nil, errors.New("interrupts empty")
	}
	cpuNum := len(strings.Fields(scanner.Text())) // one header per cpu

	for scanner.Scan() {
		parts := strings.Fields(scanner.Text())
		if len(parts) == 0 { // skip empty lines
			continue
		}
		if len(parts) < 2 {
			return nil, fmt.Errorf("%w: Not enough fields in interrupts (expected 2+ fields but got %d): %s", ErrFileParse, len(parts), parts)
		}
		intName := parts[0][:len(parts[0])-1] // remove trailing :

		if len(parts) == 2 {
			interrupts[intName] = Interrupt{
				Info:    "",
				Devices: "",
				Values: []string{
					parts[1],
				},
			}
			continue
		}

		intr := Interrupt{
			Values: parts[1 : cpuNum+1],
		}

		if _, err := strconv.Atoi(intName); err == nil { // numeral interrupt
			intr.Info = parts[cpuNum+1]
			intr.Devices = strings.Join(parts[cpuNum+2:], " ")
		} else {
			intr.Info = strings.Join(parts[cpuNum+1:], " ")
		}
		interrupts[intName] = intr
	}

	return interrupts, scanner.Err()
}