X-Git-Url: https://git.xinqibao.xyz/slstatus.git/blobdiff_plain/422cadfd5ffd78ae1b8fdf15734e03bd0333b26e..cbbf59fd3dde3f7cfbdc9807da5f5f42b664cf49:/components/battery.c

diff --git a/components/battery.c b/components/battery.c
index bcd42cd..8bfe42a 100644
--- a/components/battery.c
+++ b/components/battery.c
@@ -7,6 +7,29 @@
 
 #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)
@@ -60,7 +83,7 @@
 	battery_remaining(const char *bat)
 	{
 		int charge_now, current_now, m, h;
-		float timeleft;
+		double timeleft;
 		char path[PATH_MAX], state[12];
 
 		if (esnprintf(path, sizeof(path),
@@ -72,27 +95,25 @@
 			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 (esnprintf(path, sizeof(path),
-                                      "/sys/class/power_supply/%s/charge_now",
-			              bat) < 0) {
+			if (!pick(bat, CURRENT_NOW, POWER_NOW, path,
+			          sizeof(path)) ||
+			    pscanf(path, "%d", &current_now) < 0) {
 				return NULL;
 			}
-			if (pscanf(path, "%d", &charge_now) != 1) {
-				return NULL;
-			}
-			if (esnprintf(path, sizeof(path),
-			              "/sys/class/power_supply/%s/current_now",
-			              bat) < 0) {
-				return NULL;
-			}
-			if (pscanf(path, "%d", &current_now) != 1) {
+
+			if (current_now == 0) {
 				return NULL;
 			}
 
-			timeleft = (float)charge_now / (float)current_now;
+			timeleft = (double)charge_now / (double)current_now;
 			h = timeleft;
-			m = (timeleft - (float)h) * 60;
+			m = (timeleft - (double)h) * 60;
 
 			return bprintf("%dh %dm", h, m);
 		}
@@ -169,7 +190,8 @@
 
 		if (load_apm_power_info(&apm_info)) {
 			if (apm_info.ac_state != APM_AC_ON) {
-				return bprintf("%uh %02um", apm_info.minutes_left / 60,
+				return bprintf("%uh %02um",
+			                       apm_info.minutes_left / 60,
 				               apm_info.minutes_left % 60);
 			} else {
 				return "";