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profil-dwmstatus-1.0.c (2489B)

      1 /* made by profil 2011-12-29.
      2 **
      3 ** Compile with:
      4 ** gcc -Wall -pedantic -std=c99 -lX11 status.c
      5 */
      6 #include <stdio.h>
      7 #include <stdlib.h>
      8 #include <unistd.h>
      9 #include <time.h>
     10 #include <X11/Xlib.h>
     11 
     12 static Display *dpy;
     13 
     14 void setstatus(char *str) {
     15 	XStoreName(dpy, DefaultRootWindow(dpy), str);
     16 	XSync(dpy, False);
     17 }
     18 
     19 float getfreq(char *file) {
     20 	FILE *fd;
     21 	char *freq;
     22 	float ret;
     23 
     24 	freq = malloc(10);
     25 	fd = fopen(file, "r");
     26 	if(fd == NULL) {
     27 		fprintf(stderr, "Cannot open '%s' for reading.\n", file);
     28 		exit(1);
     29 	}
     30 
     31 	fgets(freq, 10, fd);
     32 	fclose(fd);
     33 
     34 	ret = atof(freq)/1000000;
     35 	free(freq);
     36 	return ret;
     37 }
     38 
     39 char *getdatetime() {
     40 	char *buf;
     41 	time_t result;
     42 	struct tm *resulttm;
     43 
     44 	if((buf = malloc(sizeof(char)*65)) == NULL) {
     45 		fprintf(stderr, "Cannot allocate memory for buf.\n");
     46 		exit(1);
     47 	}
     48 	result = time(NULL);
     49 	resulttm = localtime(&result);
     50 	if(resulttm == NULL) {
     51 		fprintf(stderr, "Error getting localtime.\n");
     52 		exit(1);
     53 	}
     54 	if(!strftime(buf, sizeof(char)*65-1, "%a %b %d %H:%M:%S", resulttm)) {
     55 		fprintf(stderr, "strftime is 0.\n");
     56 		exit(1);
     57 	}
     58 
     59 	return buf;
     60 }
     61 
     62 float getbattery() {
     63 	FILE *fd;
     64 	int energy_now, energy_full, voltage_now;
     65 
     66 	fd = fopen("/sys/class/power_supply/BAT0/energy_now", "r");
     67 	if(fd == NULL) {
     68 		fprintf(stderr, "Error opening energy_now.\n");
     69 		return -1;
     70 	}
     71 	fscanf(fd, "%d", &energy_now);
     72 	fclose(fd);
     73 
     74 
     75 	fd = fopen("/sys/class/power_supply/BAT0/energy_full", "r");
     76 	if(fd == NULL) {
     77 		fprintf(stderr, "Error opening energy_full.\n");
     78 		return -1;
     79 	}
     80 	fscanf(fd, "%d", &energy_full);
     81 	fclose(fd);
     82 
     83 
     84 	fd = fopen("/sys/class/power_supply/BAT0/voltage_now", "r");
     85 	if(fd == NULL) {
     86 		fprintf(stderr, "Error opening voltage_now.\n");
     87 		return -1;
     88 	}
     89 	fscanf(fd, "%d", &voltage_now);
     90 	fclose(fd);
     91 
     92 
     93 	return ((float)energy_now * 1000 / (float)voltage_now) * 100 / ((float)energy_full * 1000 / (float)voltage_now);
     94 }
     95 
     96 int main(void) {
     97 	char *status;
     98 	float cpu0, cpu1;
     99 	char *datetime;
    100 	int bat0;
    101 
    102 
    103 	if (!(dpy = XOpenDisplay(NULL))) {
    104 		fprintf(stderr, "Cannot open display.\n");
    105 		return 1;
    106 	}
    107 
    108 	if((status = malloc(200)) == NULL)
    109 		exit(1);
    110 
    111 
    112 	for (;;sleep(1)) {
    113 		cpu0 = getfreq("/sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq");
    114 		cpu1 = getfreq("/sys/devices/system/cpu/cpu1/cpufreq/scaling_cur_freq");
    115 		datetime = getdatetime();
    116 		bat0 = getbattery();
    117 		snprintf(status, 200, "%0.2f, %0.2f | %.2lf%% | %s", cpu0, cpu1, bat0, datetime);
    118 
    119 		free(datetime);
    120 		setstatus(status);
    121 	}
    122 
    123 	free(status);
    124 	XCloseDisplay(dpy);
    125 
    126 	return 0;
    127 }
    128