fastfetch-sys 2.43.0

A neofetch like system information tool
Documentation 
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#include "battery.h"
#include "common/io/io.h"

#include <machine/apmvar.h>
#include <sys/ioctl.h>
#include <unistd.h>
#include <fcntl.h>

const char* ffDetectBattery(FF_MAYBE_UNUSED FFBatteryOptions* options, FFlist* result)
{
    FF_AUTO_CLOSE_FD int devfd = open("/dev/apm", O_RDONLY);

    if (devfd < 0) return "open(dev/apm, O_RDONLY) failed";

    struct apm_power_info info = {};

    if (ioctl(devfd, APM_IOC_GETPOWER, &info) < 0)
        return "ioctl(APM_IOC_GETPOWER) failed";

    if (info.battery_state == APM_BATTERY_ABSENT)
        return NULL;

    FFBatteryResult* battery = (FFBatteryResult*) ffListAdd(result);
    battery->temperature = FF_BATTERY_TEMP_UNSET;
    battery->cycleCount = 0;
    battery->timeRemaining = -1;
    battery->capacity = info.battery_life;
    ffStrbufInit(&battery->manufacturer);
    ffStrbufInit(&battery->modelName);
    ffStrbufInit(&battery->status);
    ffStrbufInit(&battery->technology);
    ffStrbufInit(&battery->serial);
    ffStrbufInit(&battery->manufactureDate);

    if (info.ac_state == APM_AC_ON)
        ffStrbufAppendS(&battery->status, "AC Connected");
    else if (info.ac_state == APM_AC_BACKUP)
        ffStrbufAppendS(&battery->status, "Backup In Use");
    else if (info.ac_state == APM_AC_OFF)
    {
        battery->timeRemaining = (int) info.minutes_left * 60;
        ffStrbufAppendS(&battery->status, "Discharging");
    }

    if (info.battery_state == APM_BATT_CRITICAL || info.battery_state == APM_BATT_CHARGING)
    {
        if (battery->status.length) ffStrbufAppendS(&battery->status, ", ");
        ffStrbufAppendS(&battery->status, info.battery_state == APM_BATT_CRITICAL ? "Critical" : "Charging");
    }

    return NULL;
}