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	batt.c - spoon - set dwm status
	git clone git://git.codemadness.org/spoon
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	---
	batt.c (1697B)
	---
	1 #include <err.h>
	2 #include <stdio.h>
	3
	4 #include "types.h"
	5 #include "util.h"
	6
	7 char *crit[] = {
	8 "[!!!!]=",
	9 " ",
	10 };
	11
	12 void
	13 battprint(char *buf, size_t len, int acon, int life)
	14 {
	15 char c;
	16 static int frame = 0;
	17
	18 c = acon ? '>' : '<';
	19 if (!acon && life <= 5)
	20 snprintf(buf, len, "%s", crit[frame++ % LEN(crit)]);
	21 else if (life >= 80)
	22 snprintf(buf, len, "[////]=");
	23 else if (life >= 60)
	24 snprintf(buf, len, "[///%c]=", c);
	25 else if (life >= 40)
	26 snprintf(buf, len, "[//%c%c]=", c, c);
	27 else if (life >= 20)
	28 snprintf(buf, len, "[/%c%c%c]=", c, c, c);
	29 else
	30 snprintf(buf, len, "[%c%c%c%c]=", c, c, c, c);
	31 }
	32
	33 #ifdef __OpenBSD__
	34 #include <sys/ioctl.h>
	35
	36 #include <fcntl.h>
	37 #include <unistd.h>
	38
	39 #include <machine/apmvar.h>
	40
	41 int
	42 battread(void arg, char buf, size_t len)
	43 {
	44 struct apm_power_info info;
	45 int ret, fd;
	46
	47 fd = open("/dev/apm", O_RDONLY);
	48 if (fd < 0) {
	49 warn("open %s", "/dev/apm");
	50 return -1;
	51 }
	52 ret = ioctl(fd, APM_IOC_GETPOWER, &info);
	53 if (ret < 0) {
	54 warn("APM_IOC_GETPOWER %s", "/dev/apm");
	55 close(fd);
	56 return -1;
	57 }
	58 close(fd);
	59
	60 if (info.battery_state == APM_BATTERY_ABSENT)
	61 snprintf(buf, len, "[no batt]");
	62 else
	63 battprint(buf, len, info.ac_state == APM_AC_ON, info.bat…
	64 return 0;
	65 }
	66 #elif __linux__
	67 int
	68 battread(void arg, char buf, size_t len)
	69 {
	70 FILE *fp;
	71 int acon;
	72 int life;
	73 struct battarg *battarg = arg;
	74
	75 fp = fopen(battarg->cap, "r");
	76 if (fp == NULL) {
	77 warn("fopen %s", battarg->cap);
	78 return -1;
	79 }
	80 fscanf(fp, "%d", &life);
	81 fclose(fp);
	82 fp = fopen(battarg->ac, "r");
	83 if (fp == NULL) {
	84 warn("fopen %s", battarg->ac);
	85 return -1;
	86 }
	87 fscanf(fp, "%d", &acon);
	88 fclose(fp);
	89 battprint(buf, len, acon, life);
	90 return 0;
	91 }
	92 #endif