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commit 4a6a951fa439e6439b44810af9f67a4098c07037
parent 92bc1594419868484bfcd46a8b925630001068bb
Author: Christoph Lohmann <20h@r-36.net>
Date:   Fri, 21 Oct 2011 09:46:27 +0200

Adding support for the rolling API in Linux. :(
Diffstat:
A
dwm.suckless.org/dwmstatus/even-newer-acpi-battery.c
 | 
55
+++++++++++++++++++++++++++++++++++++++++++++++++++++++
M
dwm.suckless.org/dwmstatus/index.md
 | 
3
++-

2 files changed, 57 insertions(+), 1 deletion(-)
diff --git a/dwm.suckless.org/dwmstatus/even-newer-acpi-battery.c b/dwm.suckless.org/dwmstatus/even-newer-acpi-battery.c
@@ -0,0 +1,55 @@
+char *
+readfile(char *base, char *file)
+{
+	char *path, line[513];
+	FILE *fd;
+
+	memset(line, 0, sizeof(line));
+
+	path = smprintf("%s/%s", base, file);
+	fd = fopen(path, "r");
+	if (fd == NULL) {
+		perror("fopen");
+		exit(1);
+	}
+	free(path);
+
+	if (fgets(line, sizeof(line)-1, fd) == NULL) {
+		perror("fgets");
+		exit(1);
+	}
+	fclose(fd);
+
+	return smprintf("%s", line);
+}
+
+char *
+getbattery(char *base)
+{
+	char *co;
+	int descap, remcap;
+
+	descap = -1;
+	remcap = -1;
+
+	co = readfile(base, "present");
+	if (co[0] != '1') {
+		free(co);
+		return smprintf("not present");
+	}
+	free(co);
+
+	co = readfile(base, "energy_full_design");
+	sscanf(co, "%d", &descap);
+	free(co);
+
+	co = readfile(base, "energy_now");
+	sscanf(co, "%d", &remcap);
+	free(co);
+
+	if (remcap < 0 || descap < 0)
+		return smprintf("invalid");
+
+	return smprintf("%.0f", ((float)remcap / (float)descap) * 100);
+}
+
diff --git a/dwm.suckless.org/dwmstatus/index.md b/dwm.suckless.org/dwmstatus/index.md
@@ -20,5 +20,6 @@ Helper functions
 If you have simple C functions for gathering system information, please
 add them here as file or as code example.
 
-* [Support for the new battery ACPI code in Linux](new-acpi-battery.c)
+* [Support for ACPI battery status Linux < 3.0](new-acpi-battery.c)
+* [Support for ACPI battery status Linux >= 3](even-newer-acpi-battery.c)