/* See LICENSE file for copyright and license details. */
-
-/* global libraries */
-#include <alsa/asoundlib.h>
-#include <stdarg.h>
+#include <errno.h>
+#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
-#include <unistd.h>
#include <X11/Xlib.h>
-/* local libraries */
-#include "config.h"
+#include "arg.h"
+#include "slstatus.h"
+#include "util.h"
-/* functions */
-void setstatus(char *str);
-char *smprintf(char *fmt, ...);
-char *get_battery();
-char *get_cpu_temperature();
-char *get_cpu_usage();
-char *get_datetime();
-char *get_ram_usage();
-char *get_volume();
-char *get_wifi_signal();
+struct arg {
+ const char *(*func)();
+ const char *fmt;
+ const char *args;
+};
-/* global variables */
+char buf[1024];
+static volatile sig_atomic_t done;
static Display *dpy;
-/* set statusbar (WM_NAME) */
-void
-setstatus(char *str)
-{
- XStoreName(dpy, DefaultRootWindow(dpy), str);
- XSync(dpy, False);
-}
-
-/* smprintf function */
-char *
-smprintf(char *fmt, ...)
-{
- va_list fmtargs;
- char *ret = NULL;
- va_start(fmtargs, fmt);
- if (vasprintf(&ret, fmt, fmtargs) < 0)
- return NULL;
- va_end(fmtargs);
-
- return ret;
-}
-
-/* battery percentage */
-char *
-get_battery()
-{
- int now, full, 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", &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", &full);
-
- /* close battery full file */
- fclose(fp);
-
- /* calculate percent */
- perc = now / (full / 100);
-
- /* return perc as string */
- return smprintf("%d%%", perc);
-}
-
-/* cpu temperature */
-char *
-get_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 *
-get_cpu_usage()
-{
- int 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 */
- 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 perc as string */
- return smprintf("%d%%", perc);
-}
+#include "config.h"
-/* date and time */
-char *
-get_datetime()
+static void
+terminate(const int signo)
{
- time_t tm;
- size_t bufsize = 64;
- 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 smprintf("%s", buf);
+ if (signo != SIGUSR1)
+ done = 1;
}
-/* ram percentage */
-char *
-get_ram_usage()
+static void
+difftimespec(struct timespec *res, struct timespec *a, struct timespec *b)
{
- int perc;
- long total, free, buffers, cached;
- 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\nBuffers: %ld kB\n", &buffers, &buffers);
- fscanf(fp, "Cached: %ld kB\n", &cached);
-
- /* close meminfo file */
- fclose(fp);
-
- /* calculate percentage */
- perc = 100 * ((total - free) - (buffers + cached)) / total;
-
- /* return perc as string */
- return smprintf("%d%%", perc);
+ res->tv_sec = a->tv_sec - b->tv_sec - (a->tv_nsec < b->tv_nsec);
+ res->tv_nsec = a->tv_nsec - b->tv_nsec +
+ (a->tv_nsec < b->tv_nsec) * 1E9;
}
-/* alsa volume percentage */
-char *
-get_volume()
+static void
+usage(void)
{
- 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 smprintf("mute");
- else
- return smprintf("%d%%", (vol * 100) / max);
+ die("usage: %s [-s] [-1]", argv0);
}
-/* wifi percentage */
-char *
-get_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];
- char needle[sizeof wificard + 1];
- FILE *fp;
-
- /* generate the path name */
- memset(path, 0, sizeof path);
- 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);
- }
-
- /* read the status */
- fgets(status, 5, fp);
-
- /* close wifi file */
- fclose(fp);
-
- /* check if interface down */
- if(strcmp(status, "up\n") != 0){
- return "n/a";
- }
-
- /* open wifi file */
- if (!(fp = fopen("/proc/net/wireless", "r"))) {
- fprintf(stderr, "Error opening wireless file.");
- exit(1);
- }
-
- /* extract the signal strength */
- strcpy(needle, wificard);
- strcat(needle, ":");
- fgets(buf, bufsize, fp);
- fgets(buf, bufsize, fp);
- fgets(buf, bufsize, fp);
- if ((datastart = strstr(buf, needle)) != 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()
+main(int argc, char *argv[])
{
- char status[1024];
- char *battery = NULL;
- char *cpu_temperature = NULL;
- char *cpu_usage = NULL;
- char *datetime = NULL;
- char *ram_usage = NULL;
- char *volume = NULL;
- char *wifi_signal = NULL;
-
- /* open display */
- if (!(dpy = XOpenDisplay(0x0))) {
- fprintf(stderr, "Cannot open display!\n");
- exit(1);
- }
-
- /* return status every second */
- for (;;) {
- /* assign the values */
- battery = get_battery();
- cpu_temperature = get_cpu_temperature();
- cpu_usage = get_cpu_usage();
- datetime = get_datetime();
- ram_usage = get_ram_usage();
- volume = get_volume();
- wifi_signal = get_wifi_signal();
-
- /* return the status */
- sprintf(status, FORMATSTRING, ARGUMENTS);
- setstatus(status);
-
- /* free the values */
- free(battery);
- free(cpu_temperature);
- free(cpu_usage);
- free(datetime);
- free(ram_usage);
- free(volume);
- free(wifi_signal);
- }
-
- /* close display */
- XCloseDisplay(dpy);
-
- /* exit successfully */
- return 0;
+ struct sigaction act;
+ struct timespec start, current, diff, intspec, wait;
+ size_t i, len;
+ int sflag, ret;
+ char status[MAXLEN];
+ const char *res;
+
+ sflag = 0;
+ ARGBEGIN {
+ case '1':
+ done = 1;
+ /* fallthrough */
+ case 's':
+ sflag = 1;
+ break;
+ default:
+ usage();
+ } ARGEND
+
+ if (argc) {
+ usage();
+ }
+
+ memset(&act, 0, sizeof(act));
+ act.sa_handler = terminate;
+ sigaction(SIGINT, &act, NULL);
+ sigaction(SIGTERM, &act, NULL);
+ act.sa_flags |= SA_RESTART;
+ sigaction(SIGUSR1, &act, NULL);
+
+ if (!sflag && !(dpy = XOpenDisplay(NULL))) {
+ die("XOpenDisplay: Failed to open display");
+ }
+
+ do {
+ if (clock_gettime(CLOCK_MONOTONIC, &start) < 0) {
+ die("clock_gettime:");
+ }
+
+ status[0] = '\0';
+ for (i = len = 0; i < LEN(args); i++) {
+ if (!(res = args[i].func(args[i].args))) {
+ res = unknown_str;
+ }
+ if ((ret = esnprintf(status + len, sizeof(status) - len,
+ args[i].fmt, res)) < 0) {
+ break;
+ }
+ len += ret;
+ }
+
+ if (sflag) {
+ puts(status);
+ fflush(stdout);
+ if (ferror(stdout))
+ die("puts:");
+ } else {
+ if (XStoreName(dpy, DefaultRootWindow(dpy), status)
+ < 0) {
+ die("XStoreName: Allocation failed");
+ }
+ XFlush(dpy);
+ }
+
+ if (!done) {
+ if (clock_gettime(CLOCK_MONOTONIC, ¤t) < 0) {
+ die("clock_gettime:");
+ }
+ difftimespec(&diff, ¤t, &start);
+
+ intspec.tv_sec = interval / 1000;
+ intspec.tv_nsec = (interval % 1000) * 1E6;
+ difftimespec(&wait, &intspec, &diff);
+
+ if (wait.tv_sec >= 0) {
+ if (nanosleep(&wait, NULL) < 0 &&
+ errno != EINTR) {
+ die("nanosleep:");
+ }
+ }
+ }
+ } while (!done);
+
+ if (!sflag) {
+ XStoreName(dpy, DefaultRootWindow(dpy), NULL);
+ if (XCloseDisplay(dpy) < 0) {
+ die("XCloseDisplay: Failed to close display");
+ }
+ }
+
+ return 0;
}