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commented and reordered

This commit is contained in:
Aaron Marcher 2016-03-07 10:00:02 +01:00 committed by Aaron Marcher (drkhsh)
parent 6b2b839cfd
commit cc85bcc4a4

View file

@ -1,5 +1,6 @@
/* See LICENSE file for copyright and license details. */
/* global libraries */
#include <alsa/asoundlib.h>
#include <stdarg.h>
#include <stdio.h>
@ -9,22 +10,182 @@
#include <unistd.h>
#include <X11/Xlib.h>
/* local libraries */
#include "config.h"
char *smprintf(char *fmt, ...);
/* functions */
void setstatus(char *str);
char *wifi_signal();
char *battery();
char *cpu_usage();
char *cpu_temperature();
char *ram_usage();
char *volume();
char *cpu_usage();
char *datetime();
char *ram_usage();
char *smprintf(char *fmt, ...);
char *volume();
char *wifi_signal();
/* global variables */
static Display *dpy;
/* set statusbar (WM_NAME) */
void
setstatus(char *str)
{
XStoreName(dpy, DefaultRootWindow(dpy), str);
XSync(dpy, False);
}
/* battery percentage */
char *
battery()
{
int batt_now, batt_full, batt_perc;
FILE *fp;
/* open battery now file */
if (!(fp = fopen(batterynowfile, "r"))) {
fprintf(stderr, "Error opening battery file.");
exit(1);
}
/* read value */
fscanf(fp, "%i", &batt_now);
/* close battery now file */
fclose(fp);
/* open battery full file */
if (!(fp = fopen(batteryfullfile, "r"))) {
fprintf(stderr, "Error opening battery file.");
exit(1);
}
/* read value */
fscanf(fp, "%i", &batt_full);
/* close battery full file */
fclose(fp);
/* calculate percent */
batt_perc = batt_now / (batt_full / 100);
/* return batt_perc as string */
return smprintf("%d%%", batt_perc);
}
/* cpu temperature */
char *
cpu_temperature()
{
int temperature;
FILE *fp;
/* open temperature file */
if (!(fp = fopen(tempfile, "r"))) {
fprintf(stderr, "Could not open temperature file.\n");
exit(1);
}
/* extract temperature */
fscanf(fp, "%d", &temperature);
/* close temperature file */
fclose(fp);
/* return temperature in degrees */
return smprintf("%d°C", temperature / 1000);
}
/* cpu percentage */
char *
cpu_usage()
{
int cpu_perc;
long double a[4], b[4];
FILE *fp;
/* open stat file */
if (!(fp = fopen("/proc/stat","r"))) {
fprintf(stderr, "Error opening stat file.");
exit(1);
}
/* read values */
fscanf(fp, "%*s %Lf %Lf %Lf %Lf", &a[0], &a[1], &a[2], &a[3]);
/* close stat file */
fclose(fp);
/* wait a second (for avg values) */
sleep(1);
/* open stat file */
if (!(fp = fopen("/proc/stat","r"))) {
fprintf(stderr, "Error opening stat file.");
exit(1);
}
/* read values */
fscanf(fp, "%*s %Lf %Lf %Lf %Lf", &b[0], &b[1], &b[2], &b[3]);
/* close stat file */
fclose(fp);
/* calculate avg in this second */
cpu_perc = 100 * ((b[0]+b[1]+b[2]) - (a[0]+a[1]+a[2])) / ((b[0]+b[1]+b[2]+b[3]) - (a[0]+a[1]+a[2]+a[3]));
/* return cpu_perc as string */
return smprintf("%d%%", cpu_perc);
}
/* date and time */
char *
datetime()
{
time_t tm;
size_t bufsize = 19;
char *buf = malloc(bufsize);
/* get time in format */
time(&tm);
if(!strftime(buf, bufsize, timeformat, localtime(&tm))) {
fprintf(stderr, "Strftime failed.\n");
exit(1);
}
/* return time */
return buf;
}
/* ram percentage */
char *
ram_usage()
{
int ram_perc;
long total, free, available;
FILE *fp;
/* open meminfo file */
if (!(fp = fopen("/proc/meminfo", "r"))) {
fprintf(stderr, "Error opening meminfo file.");
exit(1);
}
/* read the values */
fscanf(fp, "MemTotal: %ld kB\n", &total);
fscanf(fp, "MemFree: %ld kB\n", &free);
fscanf(fp, "MemAvailable: %ld kB\n", &available);
/* close meminfo file */
fclose(fp);
/* calculate percentage */
ram_perc = 100 * (total - available) / total;
/* return ram_perc as string */
return smprintf("%d%%",ram_perc);
}
/* smprintf function */
char *
smprintf(char *fmt, ...)
@ -50,14 +211,6 @@ smprintf(char *fmt, ...)
return ret;
}
/* set statusbar (WM_NAME) */
void
setstatus(char *str)
{
XStoreName(dpy, DefaultRootWindow(dpy), str);
XSync(dpy, False);
}
/* alsa volume percentage */
char *
volume()
@ -99,29 +252,6 @@ volume()
return smprintf("%d%%", (vol * 100) / max);
}
/* cpu temperature */
char *
cpu_temperature()
{
int temperature;
FILE *fp;
/* open temperature file */
if (!(fp = fopen(tempfile, "r"))) {
fprintf(stderr, "Could not open temperature file.\n");
exit(1);
}
/* extract temperature */
fscanf(fp, "%d", &temperature);
/* close temperature file */
fclose(fp);
/* return temperature in degrees */
return smprintf("%d°C", temperature / 1000);
}
/* wifi percentage */
char *
wifi_signal()
@ -181,134 +311,7 @@ wifi_signal()
return smprintf("%d%%", strength);
}
/* battery percentage */
char *
battery()
{
int batt_now, batt_full, batt_perc;
FILE *fp;
/* open battery now file */
if (!(fp = fopen(batterynowfile, "r"))) {
fprintf(stderr, "Error opening battery file.");
exit(1);
}
/* read value */
fscanf(fp, "%i", &batt_now);
/* close battery now file */
fclose(fp);
/* open battery full file */
if (!(fp = fopen(batteryfullfile, "r"))) {
fprintf(stderr, "Error opening battery file.");
exit(1);
}
/* read value */
fscanf(fp, "%i", &batt_full);
/* close battery full file */
fclose(fp);
/* calculate percent */
batt_perc = batt_now / (batt_full / 100);
/* return batt_perc as string */
return smprintf("%d%%", batt_perc);
}
/* date and time */
char *
datetime()
{
time_t tm;
size_t bufsize = 19;
char *buf = malloc(bufsize);
/* get time in format */
time(&tm);
if(!strftime(buf, bufsize, timeformat, localtime(&tm))) {
fprintf(stderr, "Strftime failed.\n");
exit(1);
}
/* return time */
return buf;
}
/* cpu percentage */
char *
cpu_usage()
{
int cpu_perc;
long double a[4], b[4];
FILE *fp;
/* open stat file */
if (!(fp = fopen("/proc/stat","r"))) {
fprintf(stderr, "Error opening stat file.");
exit(1);
}
/* read values */
fscanf(fp, "%*s %Lf %Lf %Lf %Lf", &a[0], &a[1], &a[2], &a[3]);
/* close stat file */
fclose(fp);
/* wait a second (for avg values) */
sleep(1);
/* open stat file */
if (!(fp = fopen("/proc/stat","r"))) {
fprintf(stderr, "Error opening stat file.");
exit(1);
}
/* read values */
fscanf(fp, "%*s %Lf %Lf %Lf %Lf", &b[0], &b[1], &b[2], &b[3]);
/* close stat file */
fclose(fp);
/* calculate avg in this second */
cpu_perc = 100 * ((b[0]+b[1]+b[2]) - (a[0]+a[1]+a[2])) / ((b[0]+b[1]+b[2]+b[3]) - (a[0]+a[1]+a[2]+a[3]));
/* return cpu_perc as string */
return smprintf("%d%%", cpu_perc);
}
/* ram percentage */
char *
ram_usage()
{
int ram_perc;
long total, free, available;
FILE *fp;
/* open meminfo file */
if (!(fp = fopen("/proc/meminfo", "r"))) {
fprintf(stderr, "Error opening meminfo file.");
exit(1);
}
/* read the values */
fscanf(fp, "MemTotal: %ld kB\n", &total);
fscanf(fp, "MemFree: %ld kB\n", &free);
fscanf(fp, "MemAvailable: %ld kB\n", &available);
/* close meminfo file */
fclose(fp);
/* calculate percentage */
ram_perc = 100 * (total - available) / total;
/* return ram_perc as string */
return smprintf("%d%%",ram_perc);
}
/* main function */
int
main()
{