X-Git-Url: https://git.xinqibao.xyz/slstatus.git/blobdiff_plain/12521e4e10cbfadc2fd42d32de101652490bf5b3..67f61b839e21c05f787ec8edf68946e0c1aed077:/slstatus.c diff --git a/slstatus.c b/slstatus.c index cb6282f..1db9af8 100644 --- a/slstatus.c +++ b/slstatus.c @@ -2,54 +2,76 @@ /* global libraries */ #include +#include +#include #include #include #include #include +#include +#include +#include #include #include #include -/* local libraries */ +/* local headers */ +#include "slstatus.h" #include "config.h" -/* functions */ -void setstatus(char *str); -char *battery(); -char *cpu_temperature(); -char *cpu_usage(); -char *datetime(); -char *ram_usage(); -char *smprintf(char *fmt, ...); -char *volume(); -char *wifi_signal(); - -/* global variables */ -static Display *dpy; - -/* set statusbar (WM_NAME) */ +/* set statusbar */ void -setstatus(char *str) +setstatus(const char *str) { + /* set WM_NAME via X11 */ XStoreName(dpy, DefaultRootWindow(dpy), str); XSync(dpy, False); } +/* smprintf function */ +char * +smprintf(const 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 * -battery() +get_battery(const char *battery) { - int battery_now, battery_full, battery_perc; + int now, full, perc; + char batterynowfile[64] = ""; + char batteryfullfile[64] = ""; FILE *fp; + /* generate battery nowfile path */ + strcat(batterynowfile, batterypath); + strcat(batterynowfile, battery); + strcat(batterynowfile, "/"); + strcat(batterynowfile, batterynow); + + /* generate battery fullfile path */ + strcat(batteryfullfile, batterypath); + strcat(batteryfullfile, battery); + strcat(batteryfullfile, "/"); + strcat(batteryfullfile, batteryfull); + /* open battery now file */ if (!(fp = fopen(batterynowfile, "r"))) { - fprintf(stderr, "Error opening battery file."); - exit(1); + fprintf(stderr, "Error opening battery file.%s",batterynowfile); + return smprintf("n/a"); } /* read value */ - fscanf(fp, "%i", &battery_now); + fscanf(fp, "%i", &now); /* close battery now file */ fclose(fp); @@ -57,33 +79,33 @@ battery() /* open battery full file */ if (!(fp = fopen(batteryfullfile, "r"))) { fprintf(stderr, "Error opening battery file."); - exit(1); + return smprintf("n/a"); } /* read value */ - fscanf(fp, "%i", &battery_full); + fscanf(fp, "%i", &full); /* close battery full file */ fclose(fp); /* calculate percent */ - battery_perc = battery_now / (battery_full / 100); + perc = now / (full / 100); - /* return batt_perc as string */ - return smprintf("%d%%", battery_perc); + /* return perc as string */ + return smprintf("%d%%", perc); } /* cpu temperature */ char * -cpu_temperature() +get_cpu_temperature(const char *file) { int temperature; FILE *fp; /* open temperature file */ - if (!(fp = fopen(tempfile, "r"))) { + if (!(fp = fopen(file, "r"))) { fprintf(stderr, "Could not open temperature file.\n"); - exit(1); + return smprintf("n/a"); } /* extract temperature */ @@ -98,16 +120,16 @@ cpu_temperature() /* cpu percentage */ char * -cpu_usage() +get_cpu_usage(const char *null) { - int cpu_perc; + 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); + return smprintf("n/a"); } /* read values */ @@ -122,7 +144,7 @@ cpu_usage() /* open stat file */ if (!(fp = fopen("/proc/stat","r"))) { fprintf(stderr, "Error opening stat file."); - exit(1); + return smprintf("n/a"); } /* read values */ @@ -132,92 +154,93 @@ cpu_usage() 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])); + 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 perc as string */ + return smprintf("%d%%", perc); } /* date and time */ char * -datetime() +get_datetime(const char *timeformat) { time_t tm; - size_t bufsize = 19; + size_t bufsize = 64; char *buf = malloc(bufsize); /* get time in format */ time(&tm); + setlocale(LC_TIME, ""); if(!strftime(buf, bufsize, timeformat, localtime(&tm))) { + setlocale(LC_TIME, "C"); fprintf(stderr, "Strftime failed.\n"); - exit(1); + return smprintf("n/a"); } + setlocale(LC_TIME, "C"); /* return time */ - return buf; + char *ret = smprintf("%s", buf); + free(buf); + return ret; +} + +/* disk usage percentage */ +char * +get_diskusage(const char *mountpoint) +{ + int perc = 0; + struct statvfs fs; + + /* try to open mountpoint */ + if (statvfs(mountpoint, &fs) < 0) { + fprintf(stderr, "Could not get filesystem info.\n"); + return smprintf("n/a"); + } + + /* calculate percent */ + perc = 100 * (1.0f - ((float)fs.f_bavail / (float)fs.f_blocks)); + + /* return perc */ + return smprintf("%d%%", perc); } /* ram percentage */ char * -ram_usage() +get_ram_usage(const char *null) { - int ram_perc; - long total, free, available; + 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); + 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\n", &available); + 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 - 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); + perc = 100 * ((total - free) - (buffers + cached)) / total; - 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; + /* return perc as string */ + return smprintf("%d%%", perc); } /* alsa volume percentage */ char * -volume() +get_volume(const char *soundcard) { 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; @@ -232,12 +255,9 @@ volume() 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); + 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) @@ -254,27 +274,27 @@ volume() /* wifi percentage */ char * -wifi_signal() +get_wifi_signal(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 path[64]; char status[5]; + char needle[sizeof wificard + 1]; FILE *fp; /* generate the path name */ - strcat(path, path_start); + memset(path, 0, sizeof path); + strcat(path, "/sys/class/net/"); strcat(path, wificard); - strcat(path, path_end); + strcat(path, "/operstate"); /* open wifi file */ if(!(fp = fopen(path, "r"))) { fprintf(stderr, "Error opening wifi operstate file."); - exit(1); + return smprintf("n/a"); } /* read the status */ @@ -285,20 +305,22 @@ wifi_signal() /* check if interface down */ if(strcmp(status, "up\n") != 0){ - return "n/a"; + return smprintf("n/a"); } /* open wifi file */ if (!(fp = fopen("/proc/net/wireless", "r"))) { fprintf(stderr, "Error opening wireless file."); - exit(1); + 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, "wlp3s0:")) != NULL) { + if ((datastart = strstr(buf, needle)) != NULL) { datastart = strstr(buf, ":"); sscanf(datastart + 1, " %*d %d %*d %*d %*d %*d %*d %*d %*d %*d", &strength); } @@ -314,40 +336,35 @@ wifi_signal() int main() { - char status[1024]; + char status_string[1024]; + struct arg argument; - /* open display */ + /* try to 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 */ + /* return status every interval */ 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); + /* clear the string */ + memset(status_string, 0, sizeof(status_string)); + + /* generate status_string */ + for (size_t i = 0; i < sizeof(args) / sizeof(args[0]); ++i) { + argument = args[i]; + char *res = argument.func(argument.args); + char *element = smprintf(argument.format, res); + strcat(status_string, element); + free(res); + free(element); + } + + /* return the statusbar */ + setstatus(status_string); + + /* wait, "update_interval - 1" because of get_cpu_usage() which uses 1 second */ + sleep(update_interval -1); } /* close display */