From a1751622782eb9d3d9bfae56b75b857d8cbd0c6c Mon Sep 17 00:00:00 2001
From: Christoph Lohmann <20h@r-36.net>
Date: Sun, 10 Sep 2017 19:28:54 +0200
Subject: Initial commit.

---
 dwmstatus.c | 229 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 229 insertions(+)
 create mode 100644 dwmstatus.c

(limited to 'dwmstatus.c')

diff --git a/dwmstatus.c b/dwmstatus.c
new file mode 100644
index 0000000..9790212
--- /dev/null
+++ b/dwmstatus.c
@@ -0,0 +1,229 @@
+/*
+ * Copy me if you can.
+ * by 20h
+ */
+
+#define _BSD_SOURCE
+#include <unistd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include <string.h>
+#include <strings.h>
+#include <sys/time.h>
+#include <time.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+
+#include <X11/Xlib.h>
+
+char *tzargentina = "America/Buenos_Aires";
+char *tzutc = "UTC";
+char *tzberlin = "Europe/Berlin";
+
+static Display *dpy;
+
+char *
+smprintf(char *fmt, ...)
+{
+	va_list fmtargs;
+	char *ret;
+	int len;
+
+	va_start(fmtargs, fmt);
+	len = vsnprintf(NULL, 0, fmt, fmtargs);
+	va_end(fmtargs);
+
+	ret = malloc(++len);
+	if (ret == NULL) {
+		perror("malloc");
+		exit(1);
+	}
+
+	va_start(fmtargs, fmt);
+	vsnprintf(ret, len, fmt, fmtargs);
+	va_end(fmtargs);
+
+	return ret;
+}
+
+void
+settz(char *tzname)
+{
+	setenv("TZ", tzname, 1);
+}
+
+char *
+mktimes(char *fmt, char *tzname)
+{
+	char buf[129];
+	time_t tim;
+	struct tm *timtm;
+
+	settz(tzname);
+	tim = time(NULL);
+	timtm = localtime(&tim);
+	if (timtm == NULL)
+		return smprintf("");
+
+	if (!strftime(buf, sizeof(buf)-1, fmt, timtm)) {
+		fprintf(stderr, "strftime == 0\n");
+		return smprintf("");
+	}
+
+	return smprintf("%s", buf);
+}
+
+void
+setstatus(char *str)
+{
+	XStoreName(dpy, DefaultRootWindow(dpy), str);
+	XSync(dpy, False);
+}
+
+char *
+loadavg(void)
+{
+	double avgs[3];
+
+	if (getloadavg(avgs, 3) < 0)
+		return smprintf("");
+
+	return smprintf("%.2f %.2f %.2f", avgs[0], avgs[1], avgs[2]);
+}
+
+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");
+	free(path);
+	if (fd == NULL)
+		return NULL;
+
+	if (fgets(line, sizeof(line)-1, fd) == NULL)
+		return NULL;
+	fclose(fd);
+
+	return smprintf("%s", line);
+}
+
+char *
+getbattery(char *base)
+{
+	char *co, status;
+	int descap, remcap;
+
+	descap = -1;
+	remcap = -1;
+
+	co = readfile(base, "present");
+	if (co == NULL)
+		return smprintf("");
+	if (co[0] != '1') {
+		free(co);
+		return smprintf("not present");
+	}
+	free(co);
+
+	co = readfile(base, "charge_full_design");
+	if (co == NULL) {
+		co = readfile(base, "energy_full_design");
+		if (co == NULL)
+			return smprintf("");
+	}
+	sscanf(co, "%d", &descap);
+	free(co);
+
+	co = readfile(base, "charge_now");
+	if (co == NULL) {
+		co = readfile(base, "energy_now");
+		if (co == NULL)
+			return smprintf("");
+	}
+	sscanf(co, "%d", &remcap);
+	free(co);
+
+	co = readfile(base, "status");
+	if (!strncmp(co, "Discharging", 11)) {
+		status = '-';
+	} else if(!strncmp(co, "Charging", 8)) {
+		status = '+';
+	} else {
+		status = '?';
+	}
+
+	if (remcap < 0 || descap < 0)
+		return smprintf("invalid");
+
+	return smprintf("%.0f%%%c", ((float)remcap / (float)descap) * 100, status);
+}
+
+char *
+gettemperature(char *base, char *sensor)
+{
+	char *co;
+
+	co = readfile(base, sensor);
+	if (co == NULL)
+		return smprintf("");
+	return smprintf("%02.0f°C", atof(co) / 1000);
+}
+
+int
+main(void)
+{
+	char *status;
+	char *avgs;
+	char *bat;
+	char *bat1;
+	char *tmar;
+	char *tmutc;
+	char *tmbln;
+	char *t0, *t1, *t2, *t3;
+
+	if (!(dpy = XOpenDisplay(NULL))) {
+		fprintf(stderr, "dwmstatus: cannot open display.\n");
+		return 1;
+	}
+
+	for (;;sleep(60)) {
+		avgs = loadavg();
+		bat = getbattery("/sys/class/power_supply/BAT0");
+		bat1 = getbattery("/sys/class/power_supply/BAT1");
+		tmar = mktimes("%H:%M", tzargentina);
+		tmutc = mktimes("%H:%M", tzutc);
+		tmbln = mktimes("KW %W %a %d %b %H:%M %Z %Y", tzberlin);
+		t0 = gettemperature("/sys/devices/virtual/hwmon/hwmon1", "temp1_input");
+		t1 = gettemperature("/sys/devices/platform/coretemp.0/hwmon/hwmon3", "temp1_input");
+		t2 = gettemperature("/sys/devices/platform/coretemp.0/hwmon/hwmon3", "temp2_input");
+		t3 = gettemperature("/sys/devices/platform/coretemp.0/hwmon/hwmon3", "temp3_input");
+
+		status = smprintf("T:%s|%s|%s|%s L:%s B:%s|%s A:%s U:%s %s",
+				t0, t1, t2, t3, avgs, bat, bat1, tmar, tmutc,
+				tmbln);
+		setstatus(status);
+
+		free(t0);
+		free(t1);
+		free(t2);
+		free(t3);
+		free(avgs);
+		free(bat);
+		free(bat1);
+		free(tmar);
+		free(tmutc);
+		free(tmbln);
+		free(status);
+	}
+
+	XCloseDisplay(dpy);
+
+	return 0;
+}
+
-- 
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