Battery: support FreeBSD

Completely untested

CHANGELOG.md

@@ -12,6 +12,7 @@ Features:
 * Add `--list-config-paths` option which list search paths of config files
 * Add `--list-data-paths` option which list search paths for presets and logos
 * Add `Brightness` module support
+* Add `Battery` module support for FreeBSD
 
 Logos:
 * Raspbian (@IamNoRobot, #373)

CMakeLists.txt

@@ -382,7 +382,7 @@ elseif(BSD)
         src/common/networking_linux.c
         src/common/processing_linux.c
         src/common/sysctl.c
-        src/detection/battery/battery_nosupport.c
+        src/detection/battery/battery_bsd.c
         src/detection/bios/bios_bsd.c
         src/detection/board/board_nosupport.c
         src/detection/brightness/brightness_nosupport.c
@@ -424,6 +424,7 @@ elseif(APPLE)
         src/common/processing_linux.c
         src/common/sysctl.c
         src/detection/battery/battery_apple.c
+        src/detection/battery/battery_bsd.c
         src/detection/bios/bios_apple.c
         src/detection/board/board_nosupport.c
         src/detection/brightness/brightness_apple.c

src/detection/battery/battery_bsd.c

@@ -0,0 +1,56 @@
+#include "fastfetch.h"
+#include "battery.h"
+
+#include <dev/acpica/acpiio.h>
+#include <sys/ioctl.h>
+#include <sys/fcntl.h>
+#include <unistd.h>
+
+const char* ffDetectBatteryImpl(FF_UNUSED_PARAM FFinstance* instance, FFlist* results)
+{
+    int acpifd = open("/dev/acpi", O_RDONLY);
+    if(acpifd < 0)
+        return "open(\"/dev/acpi\", O_RDONLY) failed";
+
+    int units = ioctl(acpifd, ACPIIO_BATT_GET_UNITS, 0);
+    if(units < 0)
+    {
+        close(acpifd);
+        return "No acpiio battery units found";
+    }
+
+    for(int i = 0; i < units; ++i)
+    {
+        union acpi_battery_ioctl_arg battio;
+        battio.unit = 0;
+
+        if(ioctl(acpifd, ACPIIO_BATT_GET_BATTINFO, &battio) < 0 || (battio.battinfo.state & ACPI_BATT_STAT_NOT_PRESENT))
+            continue;
+
+        BatteryResult* battery = ffListAdd(results);
+        battery->temperature = FF_BATTERY_TEMP_UNSET;
+        ffStrbufInit(&battery->manufacturer);
+        ffStrbufInit(&battery->modelName);
+        ffStrbufInit(&battery->status);
+        ffStrbufInit(&battery->technology);
+
+        battery->capacity = battio.battinfo.cap;
+        if(battio.battinfo.state & ACPI_BATT_STAT_INVALID)
+        {
+            ffStrbufAppendS(&battery->status, "Invalid");
+        }
+        else
+        {
+            if(battio.battinfo.state & ACPI_BATT_STAT_DISCHARG)
+                ffStrbufAppendS(&battery->status, "Discharging, ");
+            else if(battio.battinfo.state & ACPI_BATT_STAT_CHARGING)
+                ffStrbufAppendS(&battery->status, "Charging, ");
+            if(battio.battinfo.state & ACPI_BATT_STAT_CRITICAL)
+                ffStrbufAppendS(&battery->status, "Ctritical");
+            ffStrbufTrimRight(&battery->status, ' ');
+            ffStrbufTrimRight(&battery->status, ',');
+        }
+    }
+    close(acpifd);
+    return NULL;
+}