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commit 8bdd8de0d512ab98064d4b7e8fdf9150ae927437
parent aff4fc19a4664d7f8a3418e432723693554e1801
Author: Thuban <thuban@singularity.fr>
Date:   Wed, 26 Jun 2013 10:01:14 +0200

another battery monitor

Diffstat:
A
dwm.suckless.org/dwmstatus/batterystatus.c
 | 
53
+++++++++++++++++++++++++++++++++++++++++++++++++++++
M
dwm.suckless.org/dwmstatus/index.md
 | 
2
++

2 files changed, 55 insertions(+), 0 deletions(-)
diff --git a/dwm.suckless.org/dwmstatus/batterystatus.c b/dwm.suckless.org/dwmstatus/batterystatus.c
@@ -0,0 +1,53 @@
+#define BATT_NOW        "/sys/class/power_supply/BAT0/charge_now"
+#define BATT_FULL       "/sys/class/power_supply/BAT0/charge_full"
+#define BATT_STATUS       "/sys/class/power_supply/BAT0/status"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+
+char *
+smprintf(char *fmt, ...)
+{
+	va_list fmtargs;
+	char *buf = NULL;
+
+	va_start(fmtargs, fmt);
+	if (vasprintf(&buf, fmt, fmtargs) == -1){
+		fprintf(stderr, "malloc vasprintf\n");
+		exit(1);
+    }
+	va_end(fmtargs);
+
+	return buf;
+}
+
+char *
+getbattery(){
+    long lnum1, lnum2 = 0;
+    char *status = malloc(sizeof(char)*12);
+    char s = '?';
+    FILE *fp = NULL;
+    if ((fp = fopen(BATT_NOW, "r"))) {
+        fscanf(fp, "%ld\n", &lnum1);
+        fclose(fp);
+        fp = fopen(BATT_FULL, "r");
+        fscanf(fp, "%ld\n", &lnum2);
+        fclose(fp);
+        fp = fopen(BATT_STATUS, "r");
+        fscanf(fp, "%s\n", status);
+        fclose(fp);
+        if (strcmp(status,"Charging") == 0)
+            s = '+';
+        if (strcmp(status,"Discharging") == 0)
+            s = '-';
+        if (strcmp(status,"Full") == 0)
+            s = '=';
+        return smprintf("%c%ld%%", s,(lnum1/(lnum2/100)));
+    }
+    else return smprintf("");
+}
+
+
+
diff --git a/dwm.suckless.org/dwmstatus/index.md b/dwm.suckless.org/dwmstatus/index.md
@@ -44,6 +44,8 @@ add them here as file or as code example.
 * [Simple function to have mpd title/artist info](mpdstatus.c)
 * [Print any info in dwm status bar via fifo](fifo.c). Replaces
   dynamic_info.
+* [Battery function](batterystatus.c) : Battery percentage and status. + if
+  charging, - if discharging, = if full.
 
 Questions
 ---------