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- /* See LICENSE file for copyright and license details. */
- #include <errno.h>
- #include <stdio.h>
- #include <string.h>
-
- #include "../util.h"
-
- #if defined(__linux__)
- #include <limits.h>
-
- const char *
- battery_perc(const char *bat)
- {
- int perc;
- char path[PATH_MAX];
-
- snprintf(path, sizeof(path), "%s%s%s", "/sys/class/power_supply/",
- bat, "/capacity");
- return (pscanf(path, "%i", &perc) == 1) ? bprintf("%d", perc) : NULL;
- }
-
- const char *
- battery_state(const char *bat)
- {
- struct {
- char *state;
- char *symbol;
- } map[] = {
- { "Charging", "+" },
- { "Discharging", "-" },
- };
- size_t i;
- char path[PATH_MAX], state[12];
-
- snprintf(path, sizeof(path), "%s%s%s", "/sys/class/power_supply/",
- bat, "/status");
- 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;
- float timeleft;
- char path[PATH_MAX], state[12];
-
- snprintf(path, sizeof(path), "%s%s%s", "/sys/class/power_supply/",
- bat, "/status");
- if (pscanf(path, "%12s", state) != 1) {
- return NULL;
- }
-
- if (!strcmp(state, "Discharging")) {
- snprintf(path, sizeof(path), "%s%s%s", "/sys/class/power_supply/",
- bat, "/charge_now");
- if (pscanf(path, "%i", &charge_now) != 1) {
- return NULL;
- }
- snprintf(path, sizeof(path), "%s%s%s", "/sys/class/power_supply/",
- bat, "/current_now");
- if (pscanf(path, "%i", ¤t_now) != 1) {
- return NULL;
- }
-
- timeleft = (float)charge_now / (float)current_now;
- h = timeleft;
- m = (timeleft - (float)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 apm_power_info apm_info;
- size_t i;
- struct {
- unsigned int state;
- char *symbol;
- } map[] = {
- { APM_AC_ON, "+" },
- { APM_AC_OFF, "-" },
- };
-
- 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
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