Function parseCPUInfoARM

cpuinfo.go:190–254

(info []byte)

}

func parseCPUInfoARM(info []byte) ([]CPUInfo, error) {
	scanner := bufio.NewScanner(bytes.NewReader(info))

	firstLine := firstNonEmptyLine(scanner)
	match, err := regexp.MatchString("^[Pp]rocessor", firstLine)
	if !match || !strings.Contains(firstLine, ":") {
		return nil, fmt.Errorf("%w: Cannot parse line: %q: %w", ErrFileParse, firstLine, err)

	}
	field := strings.SplitN(firstLine, ": ", 2)
	cpuinfo := []CPUInfo{}
	featuresLine := ""
	commonCPUInfo := CPUInfo{}
	i := 0
	if strings.TrimSpace(field[0]) == "Processor" {
		commonCPUInfo = CPUInfo{ModelName: field[1]}
		i = -1
	} else {
		v, err := strconv.ParseUint(field[1], 0, 32)
		if err != nil {
			return nil, err
		}
		firstcpu := CPUInfo{Processor: uint(v)}
		cpuinfo = []CPUInfo{firstcpu}
	}

	for scanner.Scan() {
		line := scanner.Text()
		if !strings.Contains(line, ":") {
			continue
		}
		field := strings.SplitN(line, ": ", 2)
		switch strings.TrimSpace(field[0]) {
		case "processor":
			cpuinfo = append(cpuinfo, commonCPUInfo) // start of the next processor
			i++
			v, err := strconv.ParseUint(field[1], 0, 32)
			if err != nil {
				return nil, err
			}
			cpuinfo[i].Processor = uint(v)
		case "BogoMIPS":
			if i == -1 {
				cpuinfo = append(cpuinfo, commonCPUInfo) // There is only one processor
				i++
				cpuinfo[i].Processor = 0
			}
			v, err := strconv.ParseFloat(field[1], 64)
			if err != nil {
				return nil, err
			}
			cpuinfo[i].BogoMips = v
		case "Features":
			featuresLine = line
		case "model name":
			cpuinfo[i].ModelName = field[1]
		}
	}