X-Git-Url: https://git.xinqibao.xyz/slstatus.git/blobdiff_plain/103945e7bb8d3a4198cf175b8f6be09fe53ab9e1..b792b7ab69c24bedf8147c734a849ae0c54da1dc:/components/battery.c

diff --git a/components/battery.c b/components/battery.c
index 6105a37..82e0baf 100644
--- a/components/battery.c
+++ b/components/battery.c
@@ -1,5 +1,4 @@
 /* See LICENSE file for copyright and license details. */
-#include <errno.h>
 #include <stdio.h>
 #include <string.h>
 
@@ -9,11 +8,6 @@
 	#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)
@@ -83,7 +77,7 @@
 	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),
@@ -95,21 +89,28 @@
 			return NULL;
 		}
 
-		if (!pick(bat, CHARGE_NOW, ENERGY_NOW, path, sizeof(path)) ||
+		if (!pick(bat, "/sys/class/power_supply/%s/charge_now",
+		          "/sys/class/power_supply/%s/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,
+			if (!pick(bat, "/sys/class/power_supply/%s/current_now",
+			          "/sys/class/power_supply/%s/power_now", path,
 			          sizeof(path)) ||
 			    pscanf(path, "%d", &current_now) < 0) {
 				return NULL;
 			}
 
-			timeleft = (float)charge_now / (float)current_now;
+			if (current_now == 0) {
+				return NULL;
+			}
+
+			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);
 		}