changed to 4 spaces indentation (2 are not enough)

slstatus.c

@@ -31,333 +31,330 @@ static Display *dpy;
 void
 setstatus(char *str)
 {
-  XStoreName(dpy, DefaultRootWindow(dpy), str);
-  XSync(dpy, False);
+    XStoreName(dpy, DefaultRootWindow(dpy), str);
+    XSync(dpy, False);
 }
 
 /* battery percentage */
 char *
 battery()
 {
-  int battery_now, battery_full, battery_perc;
-  FILE *fp;
+    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);
-  }
+    /* open battery now file */
+    if (!(fp = fopen(batterynowfile, "r"))) {
+        fprintf(stderr, "Error opening battery file.");
+        exit(1);
+    }
 
-  /* read value */
-  fscanf(fp, "%i", &battery_now);
+    /* read value */
+    fscanf(fp, "%i", &battery_now);
 
-  /* close battery now file */
-  fclose(fp);
+    /* close battery now file */
+    fclose(fp);
 
-  /* open battery full file */
-  if (!(fp = fopen(batteryfullfile, "r"))) {
-    fprintf(stderr, "Error opening battery file.");
-    exit(1);
-  }
+    /* open battery full file */
+    if (!(fp = fopen(batteryfullfile, "r"))) {
+        fprintf(stderr, "Error opening battery file.");
+        exit(1);
+    }
 
-  /* read value */
-  fscanf(fp, "%i", &battery_full);
+    /* read value */
+    fscanf(fp, "%i", &battery_full);
 
-  /* close battery full file */
-  fclose(fp);
+    /* close battery full file */
+    fclose(fp);
 
-  /* calculate percent */
-  battery_perc = battery_now / (battery_full / 100);
+    /* calculate percent */
+    battery_perc = battery_now / (battery_full / 100);
 
-  /* return batt_perc as string */
-  return smprintf("%d%%", battery_perc);
+    /* return batt_perc as string */
+    return smprintf("%d%%", battery_perc);
 }
 
 /* cpu temperature */
 char *
 cpu_temperature()
 {
-  int temperature;
-  FILE *fp;
+    int temperature;
+    FILE *fp;
 
-  /* open temperature file */
-  if (!(fp = fopen(tempfile, "r"))) {
-    fprintf(stderr, "Could not open temperature file.\n");
-    exit(1);
-  }
+    /* open temperature file */
+    if (!(fp = fopen(tempfile, "r"))) {
+        fprintf(stderr, "Could not open temperature file.\n");
+        exit(1);
+    }
 
-  /* extract temperature */
-  fscanf(fp, "%d", &temperature);
+    /* extract temperature */
+    fscanf(fp, "%d", &temperature);
 
-  /* close temperature file */
-  fclose(fp);
+    /* close temperature file */
+    fclose(fp);
 
-  /* return temperature in degrees */
-  return smprintf("%d°C", temperature / 1000);
+    /* 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;
+    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);
-  }
+    /* 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]);
+    /* read values */
+    fscanf(fp, "%*s %Lf %Lf %Lf %Lf", &a[0], &a[1], &a[2], &a[3]);
 
-  /* close stat file */
-  fclose(fp);
+    /* close stat file */
+    fclose(fp);
 
-  /* wait a second (for avg values) */
-  sleep(1);
+    /* 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);
-  }
+    /* 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]);
+    /* read values */
+    fscanf(fp, "%*s %Lf %Lf %Lf %Lf", &b[0], &b[1], &b[2], &b[3]);
 
-  /* close stat file */
-  fclose(fp);
+    /* 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]));
+    /* 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);
+    /* 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;
+    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;
+    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);
-  }
+    /* 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);
+    /* 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);
+    /* close meminfo file */
+    fclose(fp);
 
-  /* calculate percentage */
-  ram_perc = 100 * (total - available) / total;
+    /* calculate percentage */
+    ram_perc = 100 * (total - available) / total;
 
-  /* return ram_perc as string */
-  return smprintf("%d%%",ram_perc);
+    /* return ram_perc as string */
+    return smprintf("%d%%",ram_perc);
 }
 
 /* smprintf function */
 char *
 smprintf(char *fmt, ...)
 {
-  va_list fmtargs;
-  char *ret;
-  int len;
+    va_list fmtargs;
+    char *ret;
+    int len;
 
-  va_start(fmtargs, fmt);
-  len = vsnprintf(NULL, 0, fmt, fmtargs);
-  va_end(fmtargs);
+    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);
-  }
+    ret = malloc(++len);
+    if (ret == NULL) {
+        fprintf(stderr, "Malloc error.");
+        exit(1);
+    }
 
-  va_start(fmtargs, fmt);
-  vsnprintf(ret, len, fmt, fmtargs);
-  va_end(fmtargs);
+    va_start(fmtargs, fmt);
+    vsnprintf(ret, len, fmt, fmtargs);
+    va_end(fmtargs);
 
-  return ret;
+    return ret;
 }
 
 /* alsa volume percentage */
 char *
 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 smprintf("mute");
-  else
-    return smprintf("%d%%", (vol * 100) / max);
+    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);
 }
 
 /* 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];
-  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);
+    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()
 {
-  char status[1024];
-
-  /* open display */
-  if (!(dpy = XOpenDisplay(0x0))) {
-    fprintf(stderr, "Cannot open display!\n");
-    exit(1);
-  }
-
-  char *pWifi_signal = NULL;
-  char *pBattery = NULL;
-  char *pCpu_usage = NULL;
-  char *pCpu_temperature = NULL;
-  char *pRam_usage = NULL;
-  char *pVolume = NULL;
-  char *pDatetime = NULL;
-
-  /* return status every second */
-  for (;;) {
-    pWifi_signal = wifi_signal();
-    pBattery = battery();
-    pCpu_usage = cpu_usage();
-    pCpu_temperature = cpu_temperature();
-    pRam_usage = ram_usage();
-    pVolume = volume();
-    pDatetime = datetime();
-    sprintf(status, FORMATSTRING, ARGUMENTS);
-    setstatus(status);
-    free(pWifi_signal);
-    free(pBattery);
-    free(pCpu_usage);
-    free(pCpu_temperature);
-    free(pRam_usage);
-    free(pVolume);
-    free(pDatetime);
-  }
-
-  /* close display */
-  XCloseDisplay(dpy);
-
-  /* exit successfully */
-  return 0;
+    char status[1024];
+
+    /* open display */
+    if (!(dpy = XOpenDisplay(0x0))) {
+        fprintf(stderr, "Cannot open display!\n");
+        exit(1);
+    }
+
+    char *pWifi_signal = NULL;
+    char *pBattery = NULL;
+    char *pCpu_usage = NULL;
+    char *pCpu_temperature = NULL;
+    char *pRam_usage = NULL;
+    char *pVolume = NULL;
+    char *pDatetime = NULL;
+
+    /* return status every second */
+    for (;;) {
+        pWifi_signal = wifi_signal();
+        pBattery = battery();
+        pCpu_usage = cpu_usage();
+        pCpu_temperature = cpu_temperature();
+        pRam_usage = ram_usage();
+        pVolume = volume();
+        pDatetime = datetime();
+        sprintf(status, FORMATSTRING, ARGUMENTS);
+        setstatus(status);
+        free(pWifi_signal);
+        free(pBattery);
+        free(pCpu_usage);
+        free(pCpu_temperature);
+        free(pRam_usage);
+        free(pVolume);
+        free(pDatetime);
+    }
+
+    /* close display */
+    XCloseDisplay(dpy);
+
+    /* exit successfully */
+    return 0;
 }