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	profil-dwmstatus-1.0.c (2489B)
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	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", result…
	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 / (…
	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/sca…
	114 cpu1 = getfreq("/sys/devices/system/cpu/cpu1/cpufreq/sca…
	115 datetime = getdatetime();
	116 bat0 = getbattery();
	117 snprintf(status, 200, "%0.2f, %0.2f \| %.2lf%% \| %s", cpu…
	118
	119 free(datetime);
	120 setstatus(status);
	121 }
	122
	123 free(status);
	124 XCloseDisplay(dpy);
	125
	126 return 0;
	127 }
	128