9750a3d731
Granted, this style is definitely not common, but for the short utility-functions of this program it's just the right choice. This provides great flexibility, such that in the long run, it will be possible to also share code between the OS-implementations. This also keeps the state-keeping at a minimum and makes it clearer which functions are implemented on which OS without having to jiggle around with too many files in the process.
91 lines
1.9 KiB
C
91 lines
1.9 KiB
C
/* See LICENSE file for copyright and license details. */
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#include <errno.h>
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#include <stdio.h>
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#include <string.h>
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#include "../util.h"
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#if defined(__linux__)
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#include <limits.h>
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const char *
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battery_perc(const char *bat)
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{
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int perc;
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char path[PATH_MAX];
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snprintf(path, sizeof(path), "%s%s%s", "/sys/class/power_supply/",
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bat, "/capacity");
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return (pscanf(path, "%i", &perc) == 1) ?
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bprintf("%d", perc) : NULL;
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}
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const char *
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battery_power(const char *bat)
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{
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int watts;
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char path[PATH_MAX];
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snprintf(path, sizeof(path), "%s%s%s", "/sys/class/power_supply/",
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bat, "/power_now");
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return (pscanf(path, "%i", &watts) == 1) ?
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bprintf("%d", (watts + 500000) / 1000000) : NULL;
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}
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const char *
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battery_state(const char *bat)
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{
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struct {
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char *state;
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char *symbol;
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} map[] = {
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{ "Charging", "+" },
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{ "Discharging", "-" },
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{ "Full", "=" },
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{ "Unknown", "/" },
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};
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size_t i;
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char path[PATH_MAX], state[12];
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snprintf(path, sizeof(path), "%s%s%s", "/sys/class/power_supply/",
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bat, "/status");
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if (pscanf(path, "%12s", state) != 1) {
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return NULL;
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}
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for (i = 0; i < LEN(map); i++) {
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if (!strcmp(map[i].state, state)) {
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break;
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}
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}
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return (i == LEN(map)) ? "?" : map[i].symbol;
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}
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#elif defined(__OpenBSD__)
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#include <fcntl.h>
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#include <machine/apmvar.h>
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#include <sys/ioctl.h>
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#include <unistd.h>
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const char *
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battery_perc(const char *null)
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{
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struct apm_power_info apm_info;
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int fd;
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fd = open("/dev/apm", O_RDONLY);
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if (fd < 0) {
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fprintf(stderr, "open '/dev/apm': %s\n", strerror(errno));
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return NULL;
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}
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if (ioctl(fd, APM_IOC_GETPOWER, &apm_info) < 0) {
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fprintf(stderr, "ioctl 'APM_IOC_GETPOWER': %s\n",
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strerror(errno));
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close(fd);
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return NULL;
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}
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close(fd);
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return bprintf("%d", apm_info.battery_life);
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}
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#endif
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