htop/freebsd/Battery.c

/*
htop - freebsd/Battery.c
(C) 2015 Hisham H. Muhammad
Released under the GNU GPLv2, see the COPYING file
in the source distribution for its full text.
*/

#include "Battery.h"

#include <math.h>
#include <sys/sysctl.h>

void Battery_getData(double* level, ACPresence* isOnAC) {
   int life;
   size_t life_len = sizeof(life);
   if (sysctlbyname("hw.acpi.battery.life", &life, &life_len, NULL, 0) == -1) {
      *level = NAN;
   } else {
      *level = life;
   }

   int acline;
   size_t acline_len = sizeof(acline);
   if (sysctlbyname("hw.acpi.acline", &acline, &acline_len, NULL, 0) == -1) {
      *isOnAC = AC_ERROR;
   } else {
      *isOnAC = acline == 0 ? AC_ABSENT : AC_PRESENT;
   }
}