![Aaron Marcher](/assets/img/avatar_default.png)
- Remove <errno.h> because related functions are in util.c now - Remove corresponding <string.h> if not used otherwise
202 lines
3.9 KiB
C
202 lines
3.9 KiB
C
/* See LICENSE file for copyright and license details. */
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
|
|
#include "../util.h"
|
|
|
|
#if defined(__linux__)
|
|
#include <limits.h>
|
|
#include <unistd.h>
|
|
|
|
#define CHARGE_NOW "/sys/class/power_supply/%s/charge_now"
|
|
#define ENERGY_NOW "/sys/class/power_supply/%s/energy_now"
|
|
#define CURRENT_NOW "/sys/class/power_supply/%s/current_now"
|
|
#define POWER_NOW "/sys/class/power_supply/%s/power_now"
|
|
|
|
static const char *
|
|
pick(const char *bat, const char *f1, const char *f2, char *path,
|
|
size_t length)
|
|
{
|
|
if (esnprintf(path, length, f1, bat) > 0 &&
|
|
access(path, R_OK) == 0) {
|
|
return f1;
|
|
}
|
|
|
|
if (esnprintf(path, length, f2, bat) > 0 &&
|
|
access(path, R_OK) == 0) {
|
|
return f2;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
const char *
|
|
battery_perc(const char *bat)
|
|
{
|
|
int perc;
|
|
char path[PATH_MAX];
|
|
|
|
if (esnprintf(path, sizeof(path),
|
|
"/sys/class/power_supply/%s/capacity",
|
|
bat) < 0) {
|
|
return NULL;
|
|
}
|
|
if (pscanf(path, "%d", &perc) != 1) {
|
|
return NULL;
|
|
}
|
|
|
|
return bprintf("%d", perc);
|
|
}
|
|
|
|
const char *
|
|
battery_state(const char *bat)
|
|
{
|
|
static struct {
|
|
char *state;
|
|
char *symbol;
|
|
} map[] = {
|
|
{ "Charging", "+" },
|
|
{ "Discharging", "-" },
|
|
};
|
|
size_t i;
|
|
char path[PATH_MAX], state[12];
|
|
|
|
if (esnprintf(path, sizeof(path),
|
|
"/sys/class/power_supply/%s/status",
|
|
bat) < 0) {
|
|
return NULL;
|
|
}
|
|
if (pscanf(path, "%12s", state) != 1) {
|
|
return NULL;
|
|
}
|
|
|
|
for (i = 0; i < LEN(map); i++) {
|
|
if (!strcmp(map[i].state, state)) {
|
|
break;
|
|
}
|
|
}
|
|
return (i == LEN(map)) ? "?" : map[i].symbol;
|
|
}
|
|
|
|
const char *
|
|
battery_remaining(const char *bat)
|
|
{
|
|
int charge_now, current_now, m, h;
|
|
double timeleft;
|
|
char path[PATH_MAX], state[12];
|
|
|
|
if (esnprintf(path, sizeof(path),
|
|
"/sys/class/power_supply/%s/status",
|
|
bat) < 0) {
|
|
return NULL;
|
|
}
|
|
if (pscanf(path, "%12s", state) != 1) {
|
|
return NULL;
|
|
}
|
|
|
|
if (!pick(bat, CHARGE_NOW, ENERGY_NOW, path, sizeof(path)) ||
|
|
pscanf(path, "%d", &charge_now) < 0) {
|
|
return NULL;
|
|
}
|
|
|
|
if (!strcmp(state, "Discharging")) {
|
|
if (!pick(bat, CURRENT_NOW, POWER_NOW, path,
|
|
sizeof(path)) ||
|
|
pscanf(path, "%d", ¤t_now) < 0) {
|
|
return NULL;
|
|
}
|
|
|
|
if (current_now == 0) {
|
|
return NULL;
|
|
}
|
|
|
|
timeleft = (double)charge_now / (double)current_now;
|
|
h = timeleft;
|
|
m = (timeleft - (double)h) * 60;
|
|
|
|
return bprintf("%dh %dm", h, m);
|
|
}
|
|
|
|
return "";
|
|
}
|
|
#elif defined(__OpenBSD__)
|
|
#include <fcntl.h>
|
|
#include <machine/apmvar.h>
|
|
#include <sys/ioctl.h>
|
|
#include <unistd.h>
|
|
|
|
static int
|
|
load_apm_power_info(struct apm_power_info *apm_info)
|
|
{
|
|
int fd;
|
|
|
|
fd = open("/dev/apm", O_RDONLY);
|
|
if (fd < 0) {
|
|
warn("open '/dev/apm':");
|
|
return 0;
|
|
}
|
|
|
|
memset(apm_info, 0, sizeof(struct apm_power_info));
|
|
if (ioctl(fd, APM_IOC_GETPOWER, apm_info) < 0) {
|
|
warn("ioctl 'APM_IOC_GETPOWER':");
|
|
close(fd);
|
|
return 0;
|
|
}
|
|
return close(fd), 1;
|
|
}
|
|
|
|
const char *
|
|
battery_perc(const char *unused)
|
|
{
|
|
struct apm_power_info apm_info;
|
|
|
|
if (load_apm_power_info(&apm_info)) {
|
|
return bprintf("%d", apm_info.battery_life);
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
const char *
|
|
battery_state(const char *unused)
|
|
{
|
|
struct {
|
|
unsigned int state;
|
|
char *symbol;
|
|
} map[] = {
|
|
{ APM_AC_ON, "+" },
|
|
{ APM_AC_OFF, "-" },
|
|
};
|
|
struct apm_power_info apm_info;
|
|
size_t i;
|
|
|
|
if (load_apm_power_info(&apm_info)) {
|
|
for (i = 0; i < LEN(map); i++) {
|
|
if (map[i].state == apm_info.ac_state) {
|
|
break;
|
|
}
|
|
}
|
|
return (i == LEN(map)) ? "?" : map[i].symbol;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
const char *
|
|
battery_remaining(const char *unused)
|
|
{
|
|
struct apm_power_info apm_info;
|
|
|
|
if (load_apm_power_info(&apm_info)) {
|
|
if (apm_info.ac_state != APM_AC_ON) {
|
|
return bprintf("%uh %02um",
|
|
apm_info.minutes_left / 60,
|
|
apm_info.minutes_left % 60);
|
|
} else {
|
|
return "";
|
|
}
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
#endif
|