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/*
* 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);
}
char *
execscript(char *cmd)
{
FILE *fp;
char retval[1025], *rv;
memset(retval, 0, sizeof(retval));
fp = popen(cmd, "r");
if (fp == NULL)
return smprintf("");
rv = fgets(retval, sizeof(retval), fp);
pclose(fp);
if (rv == NULL)
return smprintf("");
retval[strlen(retval)-1] = '\0';
return smprintf("%s", retval);
}
int
main(void)
{
char *status;
char *avgs;
char *bat;
char *tmar;
char *tmutc;
char *tmbln;
char *t0;
char *t1;
char *kbmap;
if (!(dpy = XOpenDisplay(NULL))) {
fprintf(stderr, "dwmstatus: cannot open display.\n");
return 1;
}
for (;;sleep(30)) {
avgs = loadavg();
bat = getbattery("/sys/class/power_supply/BAT0");
tmar = mktimes("%H:%M", tzargentina);
tmutc = mktimes("%H:%M", tzutc);
tmbln = mktimes("KW %W %a %d %b %H:%M %Z %Y", tzberlin);
kbmap = execscript("setxkbmap -query | grep layout | cut -d':' -f 2- | tr -d ' '");
t0 = gettemperature("/sys/devices/virtual/thermal/thermal_zone0", "temp");
t1 = gettemperature("/sys/devices/virtual/thermal/thermal_zone1", "temp");
status = smprintf("K:%s T:%s|%s L:%s B:%s A:%s U:%s %s",
kbmap, t0, t1, avgs, bat, tmar, tmutc,
tmbln);
setstatus(status);
free(kbmap);
free(t0);
free(t1);
free(avgs);
free(bat);
free(tmar);
free(tmutc);
free(tmbln);
free(status);
}
XCloseDisplay(dpy);
return 0;
}
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