func isCpuOnline()

in internal/system/resources.go [228:272]

• 41 lines of code
• 14 McCabe index (conditional complexity)

func isCpuOnline(path string, cpuID uint16) (bool, error) {
	// #nosec G304 // This path is cpuOnlinePath from isCPUOnline
	fileContent, err := os.ReadFile(path)
	if err != nil {
		return false, err
	}
	if len(fileContent) == 0 {
		return false, fmt.Errorf("%s found to be empty", path)
	}

	cpuList := strings.TrimSpace(string(fileContent))
	for _, s := range strings.Split(cpuList, ",") {
		splitted := strings.SplitN(s, "-", 3)
		switch len(splitted) {
		case 3:
			return false, fmt.Errorf("invalid values in %s", path)
		case 2:
			min, err := strconv.ParseUint(splitted[0], 10, 16)
			if err != nil {
				return false, err
			}
			max, err := strconv.ParseUint(splitted[1], 10, 16)
			if err != nil {
				return false, err
			}
			if min > max {
				return false, fmt.Errorf("invalid values in %s", path)
			}
			// Return true, if the CPU under consideration is in the range of online CPUs.
			if cpuID >= uint16(min) && cpuID <= uint16(max) {
				return true, nil
			}
		case 1:
			value, err := strconv.ParseUint(s, 10, 16)
			if err != nil {
				return false, err
			}
			if uint16(value) == cpuID {
				return true, nil
			}
		}
	}

	return false, nil
}