![Aaron Marcher](/assets/img/avatar_default.png)
Make use of strerror(errno) and format all errors equally: function ['parameters']: error message
87 lines
1.8 KiB
C
87 lines
1.8 KiB
C
/* See LICENSE file for copyright and license details. */
|
|
#include <errno.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#if defined(__linux__)
|
|
#include <limits.h>
|
|
#include <string.h>
|
|
#elif defined(__OpenBSD__)
|
|
#include <sys/ioctl.h>
|
|
#include <fcntl.h>
|
|
#include <unistd.h>
|
|
#include <machine/apmvar.h>
|
|
#endif
|
|
|
|
#include "../util.h"
|
|
|
|
const char *
|
|
battery_perc(const char *bat)
|
|
{
|
|
#if defined(__linux__)
|
|
int perc;
|
|
char path[PATH_MAX];
|
|
|
|
snprintf(path, sizeof(path), "%s%s%s", "/sys/class/power_supply/", bat, "/capacity");
|
|
return (pscanf(path, "%i", &perc) == 1) ?
|
|
bprintf("%d", perc) : NULL;
|
|
#elif defined(__OpenBSD__)
|
|
struct apm_power_info apm_info;
|
|
int fd;
|
|
|
|
fd = open("/dev/apm", O_RDONLY);
|
|
if (fd < 0) {
|
|
fprintf(stderr, "open '/dev/apm': %s\n", strerror(errno));
|
|
return NULL;
|
|
}
|
|
|
|
if (ioctl(fd, APM_IOC_GETPOWER, &apm_info) < 0) {
|
|
fprintf(stderr, "ioctl 'APM_IOC_GETPOWER': %s\n", strerror(errno));
|
|
close(fd);
|
|
return NULL;
|
|
}
|
|
close(fd);
|
|
|
|
return bprintf("%d", apm_info.battery_life);
|
|
#endif
|
|
}
|
|
|
|
#if defined(__linux__)
|
|
const char *
|
|
battery_power(const char *bat)
|
|
{
|
|
int watts;
|
|
char path[PATH_MAX];
|
|
|
|
snprintf(path, sizeof(path), "%s%s%s", "/sys/class/power_supply/", bat, "/power_now");
|
|
return (pscanf(path, "%i", &watts) == 1) ?
|
|
bprintf("%d", (watts + 500000) / 1000000) : NULL;
|
|
}
|
|
|
|
const char *
|
|
battery_state(const char *bat)
|
|
{
|
|
struct {
|
|
char *state;
|
|
char *symbol;
|
|
} map[] = {
|
|
{ "Charging", "+" },
|
|
{ "Discharging", "-" },
|
|
{ "Full", "=" },
|
|
{ "Unknown", "/" },
|
|
};
|
|
size_t i;
|
|
char path[PATH_MAX], state[12];
|
|
|
|
snprintf(path, sizeof(path), "%s%s%s", "/sys/class/power_supply/", bat, "/status");
|
|
if (pscanf(path, "%12s", state) != 1) {
|
|
return NULL;
|
|
}
|
|
|
|
for (i = 0; i < LEN(map); i++) {
|
|
if (!strcmp(map[i].state, state)) {
|
|
break;
|
|
}
|
|
}
|
|
return (i == LEN(map)) ? "?" : map[i].symbol;
|
|
}
|
|
#endif
|