/* See LICENSE file for copyright and license details. */
+/* global libraries */
#include <alsa/asoundlib.h>
#include <stdarg.h>
#include <stdio.h>
#include <unistd.h>
#include <X11/Xlib.h>
+/* local libraries */
#include "config.h"
-char *smprintf(char *fmt, ...);
-
-void *setstatus(char *str);
-
-char *wifi_signal();
+/* functions */
+void setstatus(char *str);
char *battery();
-char *cpu_usage();
char *cpu_temperature();
+char *cpu_usage();
+char *datetime();
char *ram_usage();
+char *smprintf(char *fmt, ...);
char *volume();
-char *datetime();
+char *wifi_signal();
+/* global variables */
static Display *dpy;
-/* smprintf function */
-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) {
- fprintf(stderr, "Malloc error.");
- exit(1);
- }
-
- va_start(fmtargs, fmt);
- vsnprintf(ret, len, fmt, fmtargs);
- va_end(fmtargs);
-
- return ret;
-}
-
/* set statusbar (WM_NAME) */
void
setstatus(char *str)
{
- XStoreName(dpy, DefaultRootWindow(dpy), str);
- XSync(dpy, False);
+ XStoreName(dpy, DefaultRootWindow(dpy), str);
+ XSync(dpy, False);
}
-/* alsa volume percentage */
+/* battery percentage */
char *
-volume()
+battery()
{
- int mute = 0;
- long vol = 0, max = 0, min = 0;
-
- snd_mixer_t *handle;
- snd_mixer_elem_t *pcm_mixer, *mas_mixer;
- snd_mixer_selem_id_t *vol_info, *mute_info;
- snd_mixer_open(&handle, 0);
- snd_mixer_attach(handle, soundcard);
- snd_mixer_selem_register(handle, NULL, NULL);
- snd_mixer_load(handle);
- snd_mixer_selem_id_malloc(&vol_info);
- snd_mixer_selem_id_malloc(&mute_info);
- snd_mixer_selem_id_set_name(vol_info, channel);
- snd_mixer_selem_id_set_name(mute_info, channel);
- pcm_mixer = snd_mixer_find_selem(handle, vol_info);
- mas_mixer = snd_mixer_find_selem(handle, mute_info);
- snd_mixer_selem_get_playback_volume_range((snd_mixer_elem_t *)pcm_mixer,
- &min, &max);
- snd_mixer_selem_get_playback_volume((snd_mixer_elem_t *)pcm_mixer,
- SND_MIXER_SCHN_MONO, &vol);
- snd_mixer_selem_get_playback_switch(mas_mixer, SND_MIXER_SCHN_MONO,
- &mute);
-
- if (vol_info)
- snd_mixer_selem_id_free(vol_info);
- if (mute_info)
- snd_mixer_selem_id_free(mute_info);
- if (handle)
- snd_mixer_close(handle);
-
- if (!mute)
- return "mute";
- else
- return smprintf("%d%%", (vol * 100) / max);
+ int battery_now, battery_full, battery_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", &battery_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", &battery_full);
+
+ /* close battery full file */
+ fclose(fp);
+
+ /* calculate percent */
+ battery_perc = battery_now / (battery_full / 100);
+
+ /* return batt_perc as string */
+ return smprintf("%d%%", battery_perc);
}
/* cpu temperature */
exit(1);
}
- /* extract temperature, close file */
+ /* extract temperature */
fscanf(fp, "%d", &temperature);
+
+ /* close temperature file */
fclose(fp);
/* return temperature in degrees */
return smprintf("%d°C", temperature / 1000);
}
-/* wifi percentage */
+/* cpu percentage */
char *
-wifi_signal()
+cpu_usage()
{
- int bufsize = 255;
- int strength;
- char buf[bufsize];
- char *datastart;
- char path_start[16] = "/sys/class/net/";
- char path_end[11] = "/operstate";
- char path[32];
- FILE *fp;
-
- /* generate the path name */
- strcat(path, path_start);
- strcat(path, wificard);
- strcat(path, path_end);
+ int cpu_perc;
+ long double a[4], b[4];
+ FILE *fp;
- /* open wifi file, extract status, close file */
- if(!(fp = fopen(path, "r"))) {
- fprintf(stderr, "Error opening wifi operstate file.");
+ /* open stat file */
+ if (!(fp = fopen("/proc/stat","r"))) {
+ fprintf(stderr, "Error opening stat file.");
exit(1);
}
- char status[5];
- fgets(status, 5, fp);
+
+ /* read values */
+ fscanf(fp, "%*s %Lf %Lf %Lf %Lf", &a[0], &a[1], &a[2], &a[3]);
+
+ /* close stat file */
fclose(fp);
- /* check if interface down */
- if(strcmp(status, "up\n") != 0){
- return "n/a";
- }
+ /* wait a second (for avg values) */
+ sleep(1);
- /* open wifi file */
- if (!(fp = fopen("/proc/net/wireless", "r"))) {
- fprintf(stderr, "Error opening wireless file.");
+ /* open stat file */
+ if (!(fp = fopen("/proc/stat","r"))) {
+ fprintf(stderr, "Error opening stat file.");
exit(1);
}
- /* extract the signal strength and close the file */
- fgets(buf, bufsize, fp);
- fgets(buf, bufsize, fp);
- fgets(buf, bufsize, fp);
- if ((datastart = strstr(buf, "wlp3s0:")) != NULL) {
- datastart = strstr(buf, ":");
- sscanf(datastart + 1, " %*d %d %*d %*d %*d %*d %*d %*d %*d %*d",
- &strength);
- }
- fclose(fp);
-
- /* return strength in percent */
- return smprintf("%d%%", strength);
-}
-
-/* battery percentage */
-char *
-battery()
-{
- int batt_now;
- int batt_full;
- int batt_perc;
- FILE *fp;
+ /* read values */
+ fscanf(fp, "%*s %Lf %Lf %Lf %Lf", &b[0], &b[1], &b[2], &b[3]);
- /* open battery now file, extract and close */
- if (!(fp = fopen(batterynowfile, "r"))) {
- fprintf(stderr, "Error opening battery file.");
- exit(1);
- }
- fscanf(fp, "%i", &batt_now);
- fclose(fp);
-
- /* extract battery full file, extract and close */
- if (!(fp = fopen(batteryfullfile, "r"))) {
- fprintf(stderr, "Error opening battery file.");
- exit(1);
- }
- fscanf(fp, "%i", &batt_full);
- fclose(fp);
+ /* close stat file */
+ fclose(fp);
- /* calculate percent */
- batt_perc = batt_now / (batt_full / 100);
+ /* 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 percent */
- return smprintf("%d%%", batt_perc);
+ /* 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);
+ 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);
- }
+ time(&tm);
+ if(!strftime(buf, bufsize, timeformat, localtime(&tm))) {
+ fprintf(stderr, "Strftime failed.\n");
+ exit(1);
+ }
/* return time */
- return buf;
+ return buf;
}
-/* cpu percentage */
+/* ram percentage */
char *
-cpu_usage()
+ram_usage()
{
+ int ram_perc;
+ long total, free, available;
FILE *fp;
- long double a[4], b[4], cpu_perc;
- /* open stat file, read and close, do same after 1 second */
- if (!(fp = fopen("/proc/stat","r"))) {
- fprintf(stderr, "Error opening stat file.");
+ /* open meminfo file */
+ if (!(fp = fopen("/proc/meminfo", "r"))) {
+ fprintf(stderr, "Error opening meminfo file.");
exit(1);
}
- fscanf(fp,"%*s %Lf %Lf %Lf %Lf",&a[0],&a[1],&a[2],&a[3]);
+
+ /* 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);
- sleep(1);
- if (!(fp = fopen("/proc/stat","r"))) {
- fprintf(stderr, "Error opening stat file.");
+
+ /* calculate percentage */
+ ram_perc = 100 * (total - available) / total;
+
+ /* return ram_perc as string */
+ return smprintf("%d%%",ram_perc);
+}
+
+/* smprintf function */
+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) {
+ fprintf(stderr, "Malloc error.");
exit(1);
}
- fscanf(fp,"%*s %Lf %Lf %Lf %Lf",&b[0],&b[1],&b[2],&b[3]);
- fclose(fp);
- /* calculate average in 1 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]));
+ va_start(fmtargs, fmt);
+ vsnprintf(ret, len, fmt, fmtargs);
+ va_end(fmtargs);
- /* return avg cpu percentage */
- return smprintf("%d%%", (int)cpu_perc);
+ return ret;
}
-/* ram percentage */
+/* alsa volume percentage */
char *
-ram_usage()
+volume()
{
+ int mute = 0;
+ long vol = 0, max = 0, min = 0;
+
+ /* get volume from alsa */
+ snd_mixer_t *handle;
+ snd_mixer_elem_t *pcm_mixer, *mas_mixer;
+ snd_mixer_selem_id_t *vol_info, *mute_info;
+ snd_mixer_open(&handle, 0);
+ snd_mixer_attach(handle, soundcard);
+ snd_mixer_selem_register(handle, NULL, NULL);
+ snd_mixer_load(handle);
+ snd_mixer_selem_id_malloc(&vol_info);
+ snd_mixer_selem_id_malloc(&mute_info);
+ snd_mixer_selem_id_set_name(vol_info, channel);
+ snd_mixer_selem_id_set_name(mute_info, channel);
+ pcm_mixer = snd_mixer_find_selem(handle, vol_info);
+ mas_mixer = snd_mixer_find_selem(handle, mute_info);
+ snd_mixer_selem_get_playback_volume_range((snd_mixer_elem_t *)pcm_mixer,
+ &min, &max);
+ snd_mixer_selem_get_playback_volume((snd_mixer_elem_t *)pcm_mixer,
+ SND_MIXER_SCHN_MONO, &vol);
+ snd_mixer_selem_get_playback_switch(mas_mixer, SND_MIXER_SCHN_MONO,
+ &mute);
+ if (vol_info)
+ snd_mixer_selem_id_free(vol_info);
+ if (mute_info)
+ snd_mixer_selem_id_free(mute_info);
+ if (handle)
+ snd_mixer_close(handle);
+
+ /* return the string (mute) */
+ if (!mute)
+ return "mute";
+ else
+ return smprintf("%d%%", (vol * 100) / max);
+}
+
+/* wifi percentage */
+char *
+wifi_signal()
+{
+ int bufsize = 255;
+ int strength;
+ char buf[bufsize];
+ char *datastart;
+ char path_start[16] = "/sys/class/net/";
+ char path_end[11] = "/operstate";
+ char path[32];
+ char status[5];
FILE *fp;
- long total, free, available;
- int ram_perc;
- /* read meminfo file, extract and close */
- if (!(fp = fopen("/proc/meminfo", "r"))) {
- fprintf(stderr, "Error opening meminfo file.");
+ /* generate the path name */
+ strcat(path, path_start);
+ strcat(path, wificard);
+ strcat(path, path_end);
+
+ /* open wifi file */
+ if(!(fp = fopen(path, "r"))) {
+ fprintf(stderr, "Error opening wifi operstate file.");
exit(1);
}
- fscanf(fp, "MemTotal: %ld kB\n", &total);
- fscanf(fp, "MemFree: %ld kB\n", &free);
- fscanf(fp, "MemAvailable: %ld kB\n", &available);
+
+ /* read the status */
+ fgets(status, 5, fp);
+
+ /* close wifi file */
fclose(fp);
- /* calculate percentage */
- ram_perc = 100 * (total - available) / total;
+ /* check if interface down */
+ if(strcmp(status, "up\n") != 0){
+ return "n/a";
+ }
- /* return in percent */
- return smprintf("%d%%",ram_perc);
+ /* open wifi file */
+ if (!(fp = fopen("/proc/net/wireless", "r"))) {
+ fprintf(stderr, "Error opening wireless file.");
+ exit(1);
+ }
+
+ /* extract the signal strength */
+ fgets(buf, bufsize, fp);
+ fgets(buf, bufsize, fp);
+ fgets(buf, bufsize, fp);
+ if ((datastart = strstr(buf, "wlp3s0:")) != NULL) {
+ datastart = strstr(buf, ":");
+ sscanf(datastart + 1, " %*d %d %*d %*d %*d %*d %*d %*d %*d %*d", &strength);
+ }
+
+ /* close wifi file */
+ fclose(fp);
+
+ /* return strength in percent */
+ return smprintf("%d%%", strength);
}
+/* main function */
int
main()
{
char status[1024];
/* open display */
- if (( dpy = XOpenDisplay(0x0)) == NULL ) {
+ if (!(dpy = XOpenDisplay(0x0))) {
fprintf(stderr, "Cannot open display!\n");
exit(1);
}
/* return status every second */
- for (;;) {
- sprintf(status, FORMATSTRING, ARGUMENTS);
- setstatus(status);
- }
+ for (;;) {
+ sprintf(status, FORMATSTRING, ARGUMENTS);
+ setstatus(status);
+ }
/* close display */
XCloseDisplay(dpy);
/* exit successfully */
- return 0;
+ return 0;
}