Sort LICENSE according to first commit

[slstatus.git] / slstatus.c

diff --git a/slstatus.c b/slstatus.c
index 3297e1d..b05d915 100644 (file)
--- a/slstatus.c
+++ b/slstatus.c
@@ -1,379 +1,125 @@
 /* See LICENSE file for copyright and license details. */
 /* See LICENSE file for copyright and license details. */

-
-/* global libraries */
-#include <alsa/asoundlib.h>
-#include <fcntl.h>
-#include <stdarg.h>
+#include <locale.h>
+#include <signal.h>

 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>

-#include <sys/types.h>
-#include <sys/stat.h>

 #include <time.h>
 #include <time.h>

-#include <unistd.h>

 #include <X11/Xlib.h>
 
 #include <X11/Xlib.h>
 

-/* local libraries */
-#include "config.h"
+#include "arg.h"
+#include "slstatus.h"
+#include "util.h"

 
 

-/* functions */
-void setstatus(char *str);
-int config_check();
-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 *argv0;
+char buf[1024];
+static unsigned short int done;

 static Display *dpy;
 
 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;
-}
-
-#define CHECK_FILE(X,Y) do { \
-    if (stat(X,&Y) < 0) return -1; \
-    if (!S_ISREG(Y.st_mode)) return -1; \
-} while (0);
-
-/* check configured paths */
-int
-config_check()
-{
-    struct stat fs;
-    CHECK_FILE(batterynowfile, fs);
-    CHECK_FILE(batteryfullfile, fs);
-    CHECK_FILE(tempfile, fs);
-    return 0;
-}
-
-/* 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.");
-        return smprintf("n/a");
-    }
-
-    /* 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.");
-        return smprintf("n/a");
-    }
-
-    /* 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");
-        return smprintf("n/a");
-    }
-
-    /* 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.");
-        return smprintf("n/a");
-    }
-
-    /* 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.");
-        return smprintf("n/a");
-    }
-
-    /* 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);
+       (void)signo;

 
 

-    /* get time in format */
-    time(&tm);
-    if(!strftime(buf, bufsize, timeformat, localtime(&tm))) {
-        fprintf(stderr, "Strftime failed.\n");
-        return smprintf("n/a");
-    }
-
-    /* return time */
-    return smprintf("%s", buf);
+       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.");
-        return smprintf("n/a");
-    }
-
-    /* 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) * 1000000000;

 }
 
 }
 

-/* 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);
+       fprintf(stderr, "usage: %s [-s]\n", argv0);
+       exit(1);

 }
 
 }
 

-/* 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.");
-        return smprintf("n/a");
-    }
-
-    /* read the status */
-    fgets(status, 5, fp);
-
-    /* close wifi file */
-    fclose(fp);
-
-    /* check if interface down */
-    if(strcmp(status, "up\n") != 0){
-        return smprintf("n/a");
-    }
-
-    /* open wifi file */
-    if (!(fp = fopen("/proc/net/wireless", "r"))) {
-        fprintf(stderr, "Error opening wireless file.");
-        return smprintf("n/a");
-    }
-
-    /* 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
 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;
-
-    /* check config for sanity */
-    if (config_check() < 0) {
-        fprintf(stderr, "Config error, please check paths and recompile\n");
-        exit(1);
-    }
-    /* 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);
-        sleep(update_interval);
-    }
-
-    /* close display */
-    XCloseDisplay(dpy);
-
-    /* exit successfully */
-    return 0;
+       struct sigaction act;
+       struct timespec start, current, diff, intspec, wait;
+       size_t i, len;
+       int sflag = 0;
+       char status[MAXLEN];
+
+       ARGBEGIN {
+               case 's':
+                       sflag = 1;
+                       break;
+               default:
+                       usage();
+       } ARGEND
+
+       if (argc) {
+               usage();
+       }
+
+       setlocale(LC_ALL, "");
+
+       memset(&act, 0, sizeof(act));
+       act.sa_handler = terminate;
+       sigaction(SIGINT,  &act, NULL);
+       sigaction(SIGTERM, &act, NULL);
+
+       if (!sflag && !(dpy = XOpenDisplay(NULL))) {
+               fprintf(stderr, "Cannot open display");
+               return 1;
+       }
+
+       while (!done) {
+               clock_gettime(CLOCK_MONOTONIC, &start);
+
+               status[0] = '\0';
+               for (i = len = 0; i < LEN(args); i++) {
+                       const char * res = args[i].func(args[i].args);
+                       res = (res == NULL) ? unknown_str : res;
+                       len += snprintf(status + len, sizeof(status) - len,
+                                       args[i].fmt, res);
+
+                       if (len >= sizeof(status)) {
+                               status[sizeof(status) - 1] = '\0';
+                       }
+               }
+
+               if (sflag) {
+                       printf("%s\n", status);
+               } else {
+                       XStoreName(dpy, DefaultRootWindow(dpy), status);
+                       XSync(dpy, False);
+               }
+
+               if (!done) {
+                       clock_gettime(CLOCK_MONOTONIC, &current);
+                       difftimespec(&diff, &current, &start);
+
+                       intspec.tv_sec = interval / 1000;
+                       intspec.tv_nsec = (interval % 1000) * 1000000;
+                       difftimespec(&wait, &intspec, &diff);
+
+                       if (wait.tv_sec >= 0) {
+                               nanosleep(&wait, NULL);
+                       }
+               }
+       }
+
+       if (!sflag) {
+               XStoreName(dpy, DefaultRootWindow(dpy), NULL);
+               XCloseDisplay(dpy);
+       }
+
+       return 0;

 }
 }