201 lines
3.9 KiB
C
201 lines
3.9 KiB
C
/* See LICENSE file for copyright and license details. */
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#include <stdio.h>
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#include <string.h>
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#include "../util.h"
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#if defined(__linux__)
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#include <inttypes.h>
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#include <limits.h>
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#include <unistd.h>
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static const char *
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pick(const char *bat, const char *f1, const char *f2, char *path,
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size_t length)
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{
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if (esnprintf(path, length, f1, bat) > 0 &&
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access(path, R_OK) == 0) {
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return f1;
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}
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if (esnprintf(path, length, f2, bat) > 0 &&
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access(path, R_OK) == 0) {
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return f2;
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}
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return NULL;
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}
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const char *
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battery_perc(const char *bat)
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{
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int perc;
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char path[PATH_MAX];
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if (esnprintf(path, sizeof(path),
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"/sys/class/power_supply/%s/capacity",
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bat) < 0) {
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return NULL;
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}
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if (pscanf(path, "%d", &perc) != 1) {
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return NULL;
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}
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return bprintf("%d", perc);
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}
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const char *
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battery_state(const char *bat)
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{
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static struct {
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char *state;
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char *symbol;
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} map[] = {
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{ "Charging", "+" },
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{ "Discharging", "-" },
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};
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size_t i;
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char path[PATH_MAX], state[12];
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if (esnprintf(path, sizeof(path),
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"/sys/class/power_supply/%s/status",
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bat) < 0) {
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return NULL;
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}
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if (pscanf(path, "%12s", state) != 1) {
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return NULL;
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}
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for (i = 0; i < LEN(map); i++) {
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if (!strcmp(map[i].state, state)) {
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break;
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}
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}
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return (i == LEN(map)) ? "?" : map[i].symbol;
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}
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const char *
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battery_remaining(const char *bat)
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{
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uint64_t charge_now, current_now, m, h;
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double timeleft;
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char path[PATH_MAX], state[12];
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if (esnprintf(path, sizeof(path),
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"/sys/class/power_supply/%s/status",
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bat) < 0) {
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return NULL;
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}
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if (pscanf(path, "%12s", state) != 1) {
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return NULL;
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}
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if (!pick(bat, "/sys/class/power_supply/%s/charge_now",
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"/sys/class/power_supply/%s/energy_now",
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path, sizeof(path)) ||
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pscanf(path, "%" PRIu64, &charge_now) < 0) {
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return NULL;
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}
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if (!strcmp(state, "Discharging")) {
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if (!pick(bat, "/sys/class/power_supply/%s/current_now",
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"/sys/class/power_supply/%s/power_now", path,
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sizeof(path)) ||
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pscanf(path, "%" PRIu64, ¤t_now) < 0) {
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return NULL;
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}
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if (current_now == 0) {
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return NULL;
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}
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timeleft = (double)charge_now / (double)current_now;
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h = timeleft;
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m = (timeleft - (double)h) * 60;
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return bprintf("%" PRIu64 "h %" PRIu64 "m", h, m);
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}
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return "";
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}
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#elif defined(__OpenBSD__)
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#include <fcntl.h>
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#include <machine/apmvar.h>
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#include <sys/ioctl.h>
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#include <unistd.h>
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static int
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load_apm_power_info(struct apm_power_info *apm_info)
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{
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int fd;
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fd = open("/dev/apm", O_RDONLY);
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if (fd < 0) {
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warn("open '/dev/apm':");
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return 0;
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}
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memset(apm_info, 0, sizeof(struct apm_power_info));
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if (ioctl(fd, APM_IOC_GETPOWER, apm_info) < 0) {
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warn("ioctl 'APM_IOC_GETPOWER':");
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close(fd);
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return 0;
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}
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return close(fd), 1;
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}
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const char *
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battery_perc(const char *unused)
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{
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struct apm_power_info apm_info;
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if (load_apm_power_info(&apm_info)) {
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return bprintf("%d", apm_info.battery_life);
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}
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return NULL;
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}
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const char *
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battery_state(const char *unused)
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{
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struct {
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unsigned int state;
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char *symbol;
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} map[] = {
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{ APM_AC_ON, "+" },
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{ APM_AC_OFF, "-" },
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};
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struct apm_power_info apm_info;
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size_t i;
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if (load_apm_power_info(&apm_info)) {
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for (i = 0; i < LEN(map); i++) {
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if (map[i].state == apm_info.ac_state) {
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break;
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}
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}
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return (i == LEN(map)) ? "?" : map[i].symbol;
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}
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return NULL;
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}
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const char *
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battery_remaining(const char *unused)
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{
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struct apm_power_info apm_info;
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if (load_apm_power_info(&apm_info)) {
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if (apm_info.ac_state != APM_AC_ON) {
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return bprintf("%uh %02um",
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apm_info.minutes_left / 60,
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apm_info.minutes_left % 60);
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} else {
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return "";
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}
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}
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return NULL;
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}
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#endif
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