X-Git-Url: https://git.xinqibao.xyz/slstatus.git/blobdiff_plain/8286bd8a374910d24f925e9f38931cd5dbfb22d1..47ddf9382e6a02bdfce9c78306b694b4a44203cb:/slstatus.c?ds=inline diff --git a/slstatus.c b/slstatus.c index 331a345..90534d9 100644 --- a/slstatus.c +++ b/slstatus.c @@ -1,365 +1,646 @@ /* See LICENSE file for copyright and license details. */ -/* global libraries */ #include +#include +#include +#include +#include +#include +#include +#include +#include #include #include #include #include +#include +#include +#include +#include +#include +#include #include #include #include -/* local libraries */ -#include "config.h" +#undef strlcat +#undef strlcpy + +#include "strlcat.h" +#include "strlcpy.h" + +typedef char *(*op_fun)(); +struct arg { + op_fun func; + const char *format; + const char *args; +}; + +static void setstatus(const char *); +static char *smprintf(const char *, ...); +static char *battery_perc(const char *); +static char *cpu_perc(void); +static char *datetime(const char *); +static char *disk_free(const char *); +static char *disk_perc(const char *); +static char *disk_total(const char *); +static char *disk_used(const char *); +static char *entropy(void); +static char *gid(void); +static char *hostname(void); +static char *ip(const char *); +static char *load_avg(void); +static char *ram_free(void); +static char *ram_perc(void); +static char *ram_used(void); +static char *ram_total(void); +static char *run_command(const char *); +static char *temp(const char *); +static char *uid(void); +static char *uptime(void); +static char *username(void); +static char *vol_perc(const char *); +static char *wifi_perc(const char *); +static char *wifi_essid(const char *); -/* functions */ -void setstatus(char *str); -char *get_battery(); -char *get_cpu_temperature(); -char *get_cpu_usage(); -char *get_datetime(); -char *get_ram_usage(); -char *smprintf(char *fmt, ...); -char *get_volume(); -char *get_wifi_signal(); - -/* global variables */ static Display *dpy; -/* set statusbar (WM_NAME) */ -void -setstatus(char *str) +#include "config.h" + +static void +setstatus(const char *str) { - XStoreName(dpy, DefaultRootWindow(dpy), str); - XSync(dpy, False); + /* set WM_NAME via X11 */ + XStoreName(dpy, DefaultRootWindow(dpy), str); + XSync(dpy, False); } -/* battery percentage */ -char * -get_battery() +static char * +smprintf(const char *fmt, ...) { - int battery_now, battery_full, battery_perc; - FILE *fp; + va_list fmtargs; + char tmp[120]; + char *ret = NULL; + + va_start(fmtargs, fmt); + snprintf(tmp, sizeof(tmp)-1, fmt, fmtargs); + tmp[sizeof(tmp)] = '\0'; + if (asprintf(&ret, "%s", tmp) < 0) + return NULL; + + va_end(fmtargs); + return ret; +} - /* open battery now file */ - if (!(fp = fopen(batterynowfile, "r"))) { - fprintf(stderr, "Error opening battery file."); - exit(1); - } +static char * +battery_perc(const char *battery) +{ + int now, full, perc; + char batterynowfile[64]; + char batteryfullfile[64]; + FILE *fp; - /* read value */ - fscanf(fp, "%i", &battery_now); + strlcpy(batterynowfile, BATTERY_PATH, sizeof(batterynowfile)); + strlcat(batterynowfile, battery, sizeof(batterynowfile)); + strlcat(batterynowfile, "/", sizeof(batterynowfile)); + strlcat(batterynowfile, BATTERY_NOW, sizeof(batterynowfile)); - /* close battery now file */ - fclose(fp); + strlcpy(batteryfullfile, BATTERY_PATH, sizeof(batteryfullfile)); + strlcat(batteryfullfile, battery, sizeof(batteryfullfile)); + strlcat(batteryfullfile, "/", sizeof(batteryfullfile)); + strlcat(batteryfullfile, BATTERY_FULL, sizeof(batteryfullfile)); - /* open battery full file */ - if (!(fp = fopen(batteryfullfile, "r"))) { - fprintf(stderr, "Error opening battery file."); - exit(1); - } + if (!(fp = fopen(batterynowfile, "r"))) { + fprintf(stderr, "Error opening battery file: %s.\n", batterynowfile); + return smprintf(UNKNOWN_STR); + } - /* read value */ - fscanf(fp, "%i", &battery_full); + fscanf(fp, "%i", &now); + fclose(fp); - /* close battery full file */ - fclose(fp); + if (!(fp = fopen(batteryfullfile, "r"))) { + fprintf(stderr, "Error opening battery file.\n"); + return smprintf(UNKNOWN_STR); + } - /* calculate percent */ - battery_perc = battery_now / (battery_full / 100); + fscanf(fp, "%i", &full); + fclose(fp); - /* return batt_perc as string */ - return smprintf("%d%%", battery_perc); + perc = now / (full / 100); + + return smprintf("%d%%", perc); } -/* cpu temperature */ -char * -get_cpu_temperature() +static char * +cpu_perc(void) { - int temperature; - FILE *fp; + int perc; + long double a[4], b[4]; + FILE *fp; + + if (!(fp = fopen("/proc/stat","r"))) { + fprintf(stderr, "Error opening stat file.\n"); + return smprintf(UNKNOWN_STR); + } + + fscanf(fp, "%*s %Lf %Lf %Lf %Lf", &a[0], &a[1], &a[2], &a[3]); + fclose(fp); + + /* wait a second (for avg values) */ + sleep(1); + + if (!(fp = fopen("/proc/stat","r"))) { + fprintf(stderr, "Error opening stat file.\n"); + return smprintf(UNKNOWN_STR); + } + + fscanf(fp, "%*s %Lf %Lf %Lf %Lf", &b[0], &b[1], &b[2], &b[3]); + fclose(fp); + 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 smprintf("%d%%", perc); +} - /* open temperature file */ - if (!(fp = fopen(tempfile, "r"))) { - fprintf(stderr, "Could not open temperature file.\n"); - exit(1); - } +static char * +datetime(const char *timeformat) +{ + time_t tm; + size_t bufsize = 64; + char *buf = malloc(bufsize); + if (buf == NULL) { + fprintf(stderr, "Failed to get date/time.\n"); + return smprintf(UNKNOWN_STR); + } + + time(&tm); + setlocale(LC_TIME, ""); + if (!strftime(buf, bufsize, timeformat, localtime(&tm))) { + setlocale(LC_TIME, "C"); + free(buf); + fprintf(stderr, "Strftime failed.\n"); + return smprintf(UNKNOWN_STR); + } + + setlocale(LC_TIME, "C"); + char *ret = smprintf("%s", buf); + free(buf); + return ret; +} - /* extract temperature */ - fscanf(fp, "%d", &temperature); +static char * +disk_free(const char *mountpoint) +{ + struct statvfs fs; + + if (statvfs(mountpoint, &fs) < 0) { + fprintf(stderr, "Could not get filesystem info.\n"); + return smprintf(UNKNOWN_STR); + } + return smprintf("%f", (float)fs.f_bsize * (float)fs.f_bfree / 1024 / 1024 / 1024); +} + +static char * +disk_perc(const char *mountpoint) +{ + int perc = 0; + struct statvfs fs; - /* close temperature file */ - fclose(fp); + if (statvfs(mountpoint, &fs) < 0) { + fprintf(stderr, "Could not get filesystem info.\n"); + return smprintf(UNKNOWN_STR); + } - /* return temperature in degrees */ - return smprintf("%d°C", temperature / 1000); + perc = 100 * (1.0f - ((float)fs.f_bfree / (float)fs.f_blocks)); + return smprintf("%d%%", perc); } -/* cpu percentage */ -char * -get_cpu_usage() +static char * +disk_total(const char *mountpoint) { - int cpu_perc; - long double a[4], b[4]; - FILE *fp; + struct statvfs fs; - /* open stat file */ - if (!(fp = fopen("/proc/stat","r"))) { - fprintf(stderr, "Error opening stat file."); - exit(1); - } + if (statvfs(mountpoint, &fs) < 0) { + fprintf(stderr, "Could not get filesystem info.\n"); + return smprintf(UNKNOWN_STR); + } - /* read values */ - fscanf(fp, "%*s %Lf %Lf %Lf %Lf", &a[0], &a[1], &a[2], &a[3]); + return smprintf("%f", (float)fs.f_bsize * (float)fs.f_blocks / 1024 / 1024 / 1024); +} - /* close stat file */ - fclose(fp); +static char * +disk_used(const char *mountpoint) +{ + struct statvfs fs; - /* wait a second (for avg values) */ - sleep(1); + if (statvfs(mountpoint, &fs) < 0) { + fprintf(stderr, "Could not get filesystem info.\n"); + return smprintf(UNKNOWN_STR); + } - /* open stat file */ - if (!(fp = fopen("/proc/stat","r"))) { - fprintf(stderr, "Error opening stat file."); - exit(1); - } + return smprintf("%f", (float)fs.f_bsize * ((float)fs.f_blocks - (float)fs.f_bfree) / 1024 / 1024 / 1024); +} - /* read values */ - fscanf(fp, "%*s %Lf %Lf %Lf %Lf", &b[0], &b[1], &b[2], &b[3]); +static char * +entropy(void) +{ + int entropy = 0; + FILE *fp; + + if (!(fp = fopen("/proc/sys/kernel/random/entropy_avail", "r"))) { + fprintf(stderr, "Could not open entropy file.\n"); + return smprintf(UNKNOWN_STR); + } + + fscanf(fp, "%d", &entropy); + fclose(fp); + return smprintf("%d", entropy); +} - /* close stat file */ - fclose(fp); +static char * +gid(void) +{ + gid_t gid = getgid(); + return smprintf("%d", gid); +} + +static char * +hostname(void) +{ + char hostname[HOST_NAME_MAX]; + FILE *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])); + if (!(fp = fopen("/proc/sys/kernel/hostname", "r"))) { + fprintf(stderr, "Could not open hostname file.\n"); + return smprintf(UNKNOWN_STR); + } - /* return cpu_perc as string */ - return smprintf("%d%%", cpu_perc); + fscanf(fp, "%s\n", hostname); + fclose(fp); + return smprintf("%s", hostname); } -/* date and time */ -char * -get_datetime() +static char * +ip(const char *interface) { - 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; + struct ifaddrs *ifaddr, *ifa; + int s; + char host[NI_MAXHOST]; + + if (getifaddrs(&ifaddr) == -1) { + fprintf(stderr, "Error getting IP address.\n"); + return smprintf(UNKNOWN_STR); + } + + /* get the ip address */ + for (ifa = ifaddr; ifa != NULL; ifa = ifa->ifa_next) { + if (ifa->ifa_addr == NULL) + continue; + + s = getnameinfo(ifa->ifa_addr, sizeof(struct sockaddr_in), host, NI_MAXHOST, NULL, 0, NI_NUMERICHOST); + + if ((strcmp(ifa->ifa_name, interface) == 0) && (ifa->ifa_addr->sa_family == AF_INET)) { + if (s != 0) { + fprintf(stderr, "Error getting IP address.\n"); + return smprintf(UNKNOWN_STR); + } + return smprintf("%s", host); + } + } + + /* free the address */ + freeifaddrs(ifaddr); + + return smprintf(UNKNOWN_STR); } -/* ram percentage */ -char * -get_ram_usage() +static char * +load_avg(void) { - int ram_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 */ - ram_perc = 100 * ((total - free) - (buffers + cached)) / total; - - /* return ram_perc as string */ - return smprintf("%d%%",ram_perc); + double avgs[3]; + + if (getloadavg(avgs, 3) < 0) { + fprintf(stderr, "Error getting load avg.\n"); + return smprintf(UNKNOWN_STR); + } + + return smprintf("%.2f %.2f %.2f", avgs[0], avgs[1], avgs[2]); } -/* smprintf function */ -char * -smprintf(char *fmt, ...) +static char * +ram_free(void) { - va_list fmtargs; - char *ret; - int len; + long free; + FILE *fp; + + if (!(fp = fopen("/proc/meminfo", "r"))) { + fprintf(stderr, "Error opening meminfo file.\n"); + return smprintf(UNKNOWN_STR); + } + + fscanf(fp, "MemFree: %ld kB\n", &free); + fclose(fp); + return smprintf("%f", (float)free / 1024 / 1024); +} - va_start(fmtargs, fmt); - len = vsnprintf(NULL, 0, fmt, fmtargs); - va_end(fmtargs); +static char * +ram_perc(void) +{ + int perc; + long total, free, buffers, cached; + FILE *fp; + + if (!(fp = fopen("/proc/meminfo", "r"))) { + fprintf(stderr, "Error opening meminfo file.\n"); + return smprintf(UNKNOWN_STR); + } + + 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); + + fclose(fp); + perc = 100 * ((total - free) - (buffers + cached)) / total; + return smprintf("%d%%", perc); +} - ret = malloc(++len); - if (ret == NULL) { - fprintf(stderr, "Malloc error."); - exit(1); - } +static char * +ram_total(void) +{ + long total; + FILE *fp; - va_start(fmtargs, fmt); - vsnprintf(ret, len, fmt, fmtargs); - va_end(fmtargs); + if (!(fp = fopen("/proc/meminfo", "r"))) { + fprintf(stderr, "Error opening meminfo file.\n"); + return smprintf(UNKNOWN_STR); + } - return ret; + fscanf(fp, "MemTotal: %ld kB\n", &total); + fclose(fp); + return smprintf("%f", (float)total / 1024 / 1024); +} + +static char * +ram_used(void) +{ + long free, total, buffers, cached, used; + FILE *fp; + + if (!(fp = fopen("/proc/meminfo", "r"))) { + fprintf(stderr, "Error opening meminfo file.\n"); + return smprintf(UNKNOWN_STR); + } + + 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); + + fclose(fp); + used = total - free - buffers - cached; + return smprintf("%f", (float)used / 1024 / 1024); +} + +static char * +run_command(const char* command) +{ + int good; + FILE *fp; + char buffer[64]; + + if (!(fp = popen(command, "r"))) { + fprintf(stderr, "Could not get command output for: %s.\n", command); + return smprintf(UNKNOWN_STR); + } + + fgets(buffer, sizeof(buffer) - 1, fp); + pclose(fp); + for (int i = 0 ; i != sizeof(buffer); i++) { + if (buffer[i] == '\0') { + good = 1; + break; + } + } + if (good) + buffer[strlen(buffer) - 1] = '\0'; + return smprintf("%s", buffer); +} + +static char * +temp(const char *file) +{ + int temperature; + FILE *fp; + + if (!(fp = fopen(file, "r"))) { + fprintf(stderr, "Could not open temperature file.\n"); + return smprintf(UNKNOWN_STR); + } + + fscanf(fp, "%d", &temperature); + fclose(fp); + return smprintf("%d°C", temperature / 1000); +} + +static char * +uptime(void) +{ + struct sysinfo info; + int hours = 0; + int minutes = 0; + + sysinfo(&info); + hours = info.uptime / 3600; + minutes = (info.uptime - hours * 3600 ) / 60; + + return smprintf("%dh %dm", hours, minutes); +} + +static char * +username(void) +{ + register struct passwd *pw; + register uid_t uid; + + uid = geteuid(); + pw = getpwuid(uid); + + if (pw) + return smprintf("%s", pw->pw_name); + else { + fprintf(stderr, "Could not get username.\n"); + return smprintf(UNKNOWN_STR); + } + + return smprintf(UNKNOWN_STR); +} + +static char * +uid(void) +{ + register uid_t uid; + + uid = geteuid(); + + if (uid) + return smprintf("%d", uid); + else { + fprintf(stderr, "Could not get uid.\n"); + return smprintf(UNKNOWN_STR); + } + + return smprintf(UNKNOWN_STR); +} + + +static char * +vol_perc(const char *soundcard) +{ + 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); + if (vol_info == NULL || mute_info == NULL) { + fprintf(stderr, "Could not get alsa volume.\n"); + return smprintf(UNKNOWN_STR); + } + snd_mixer_selem_id_set_name(vol_info, ALSA_CHANNEL); + snd_mixer_selem_id_set_name(mute_info, ALSA_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 smprintf("mute"); + else + return smprintf("%d%%", (vol * 100) / max); } -/* alsa volume percentage */ -char * -get_volume() +static char * +wifi_perc(const char *wificard) { - 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 bufsize = 255; + int strength; + char buf[bufsize]; + char *datastart; + char path[64]; + char status[5]; + char needle[sizeof wificard + 1]; + FILE *fp; + + memset(path, 0, sizeof path); + strlcat(path, "/sys/class/net/", sizeof(path)); + strlcat(path, wificard, sizeof(path)); + strlcat(path, "/operstate", sizeof(path)); + + if(!(fp = fopen(path, "r"))) { + fprintf(stderr, "Error opening wifi operstate file.\n"); + return smprintf(UNKNOWN_STR); + } + + fgets(status, 5, fp); + fclose(fp); + if(strcmp(status, "up\n") != 0) + return smprintf(UNKNOWN_STR); + + if (!(fp = fopen("/proc/net/wireless", "r"))) { + fprintf(stderr, "Error opening wireless file.\n"); + return smprintf(UNKNOWN_STR); + } + + strlcpy(needle, wificard, sizeof(needle)); + strlcat(needle, ":", sizeof(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); + } + + fclose(fp); + return smprintf("%d%%", strength); } -/* wifi percentage */ -char * -get_wifi_signal() +static char * +wifi_essid(const char *wificard) { - 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); + char id[IW_ESSID_MAX_SIZE+1]; + int sockfd; + struct iwreq wreq; + + memset(&wreq, 0, sizeof(struct iwreq)); + wreq.u.essid.length = IW_ESSID_MAX_SIZE+1; + sprintf(wreq.ifr_name, wificard); + if((sockfd = socket(AF_INET, SOCK_DGRAM, 0)) == -1) { + fprintf(stderr, "Cannot open socket for interface: %s\n", wificard); + return smprintf(UNKNOWN_STR); + } + wreq.u.essid.pointer = id; + if (ioctl(sockfd,SIOCGIWESSID, &wreq) == -1) { + fprintf(stderr, "Get ESSID ioctl failed for interface %s\n", wificard); + return smprintf(UNKNOWN_STR); + } + + if (strcmp((char *)wreq.u.essid.pointer, "") == 0) + return smprintf(UNKNOWN_STR); + else + return smprintf("%s", (char *)wreq.u.essid.pointer); } -/* main function */ int -main() +main(void) { - char status[1024]; - char *wifi_signal = NULL; - char *battery = NULL; - char *cpu_usage = NULL; - char *cpu_temperature = NULL; - char *ram_usage = NULL; - char *volume = NULL; - char *datetime = NULL; - - /* open display */ - if (!(dpy = XOpenDisplay(0x0))) { - fprintf(stderr, "Cannot open display!\n"); - exit(1); - } - - /* return status every second */ - for (;;) { - /* assign the values */ - wifi_signal = get_wifi_signal(); - battery = get_battery(); - cpu_usage = get_cpu_usage(); - cpu_temperature = get_cpu_temperature(); - ram_usage = get_ram_usage(); - volume = get_volume(); - datetime = get_datetime(); - - /* return the status */ - sprintf(status, FORMATSTRING, ARGUMENTS); - setstatus(status); - - /* free the values */ - free(wifi_signal); - free(battery); - free(cpu_usage); - free(cpu_temperature); - free(ram_usage); - free(volume); - free(datetime); - } - - /* close display */ - XCloseDisplay(dpy); - - /* exit successfully */ - return 0; + size_t i; + char status_string[4096]; + char *res, *element; + struct arg argument; + + if (!(dpy = XOpenDisplay(0x0))) { + fprintf(stderr, "Cannot open display!\n"); + exit(1); + } + + for (;;) { + memset(status_string, 0, sizeof(status_string)); + for (i = 0; i < sizeof(args) / sizeof(args[0]); ++i) { + argument = args[i]; + if (argument.args == NULL) + res = argument.func(); + else + res = argument.func(argument.args); + element = smprintf(argument.format, res); + if (element == NULL) { + element = smprintf(UNKNOWN_STR); + fprintf(stderr, "Failed to format output.\n"); + } + strlcat(status_string, element, sizeof(status_string)); + free(res); + free(element); + } + + setstatus(status_string); + sleep(UPDATE_INTERVAL -1); + } + + XCloseDisplay(dpy); + return 0; }