static void pmu_apm_get_power_status()

in apm_emu.c [17:84]

• 63 lines of code
• 15 McCabe index (conditional complexity)

static void pmu_apm_get_power_status(struct apm_power_info *info)
{
	int percentage = -1;
	int batteries = 0;
	int time_units = -1;
	int real_count = 0;
	int i;
	char charging = 0;
	long charge = -1;
	long amperage = 0;
	unsigned long btype = 0;

	info->battery_status = APM_BATTERY_STATUS_UNKNOWN;
	info->battery_flag = APM_BATTERY_FLAG_UNKNOWN;
	info->units = APM_UNITS_MINS;

	if (pmu_power_flags & PMU_PWR_AC_PRESENT)
		info->ac_line_status = APM_AC_ONLINE;
	else
		info->ac_line_status = APM_AC_OFFLINE;

	for (i=0; i<pmu_battery_count; i++) {
		if (pmu_batteries[i].flags & PMU_BATT_PRESENT) {
			batteries++;
			if (percentage < 0)
				percentage = 0;
			if (charge < 0)
				charge = 0;
			percentage += (pmu_batteries[i].charge * 100) /
				pmu_batteries[i].max_charge;
			charge += pmu_batteries[i].charge;
			amperage += pmu_batteries[i].amperage;
			if (btype == 0)
				btype = (pmu_batteries[i].flags & PMU_BATT_TYPE_MASK);
			real_count++;
			if ((pmu_batteries[i].flags & PMU_BATT_CHARGING))
				charging++;
		}
	}
	if (batteries == 0)
		info->ac_line_status = APM_AC_ONLINE;

	if (real_count) {
		if (amperage < 0) {
			if (btype == PMU_BATT_TYPE_SMART)
				time_units = (charge * 59) / (amperage * -1);
			else
				time_units = (charge * 16440) / (amperage * -60);
		}
		percentage /= real_count;
		if (charging > 0) {
			info->battery_status = APM_BATTERY_STATUS_CHARGING;
			info->battery_flag = APM_BATTERY_FLAG_CHARGING;
		} else if (percentage <= APM_CRITICAL) {
			info->battery_status = APM_BATTERY_STATUS_CRITICAL;
			info->battery_flag = APM_BATTERY_FLAG_CRITICAL;
		} else if (percentage <= APM_LOW) {
			info->battery_status = APM_BATTERY_STATUS_LOW;
			info->battery_flag = APM_BATTERY_FLAG_LOW;
		} else {
			info->battery_status = APM_BATTERY_STATUS_HIGH;
			info->battery_flag = APM_BATTERY_FLAG_HIGH;
		}
	}

	info->battery_life = percentage;
	info->time = time_units;
}