163 lines
3.2 KiB
C
163 lines
3.2 KiB
C
/* See LICENSE file for copyright and license details. */
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#include <errno.h>
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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 <limits.h>
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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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snprintf(path, sizeof(path), "%s%s%s", "/sys/class/power_supply/",
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bat, "/capacity");
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return (pscanf(path, "%d", &perc) == 1) ? bprintf("%d", perc) : NULL;
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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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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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snprintf(path, sizeof(path), "%s%s%s", "/sys/class/power_supply/",
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bat, "/status");
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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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int charge_now, current_now, m, h;
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float timeleft;
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char path[PATH_MAX], state[12];
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snprintf(path, sizeof(path), "%s%s%s", "/sys/class/power_supply/",
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bat, "/status");
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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 (!strcmp(state, "Discharging")) {
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snprintf(path, sizeof(path), "%s%s%s", "/sys/class/power_supply/",
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bat, "/charge_now");
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if (pscanf(path, "%d", &charge_now) != 1) {
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return NULL;
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}
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snprintf(path, sizeof(path), "%s%s%s", "/sys/class/power_supply/",
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bat, "/current_now");
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if (pscanf(path, "%d", ¤t_now) != 1) {
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return NULL;
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}
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timeleft = (float)charge_now / (float)current_now;
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h = timeleft;
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m = (timeleft - (float)h) * 60;
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return bprintf("%dh %dm", 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 apm_power_info apm_info;
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size_t i;
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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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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", 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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