80fc20d1d6
Given slstatus is a tool that runs in the background, most likely run from .xinitrc, it's important to prepend the name of the tool to error messages so it becomes clear where the error is coming from. To make this much more consistent, this commit adds warn() and die() utility functions consistent with other suckless projects and adapts all calls to fprintf(stderr, *) to the warn() and die() functions, greatly increasing the readability of the code.
111 lines
2.1 KiB
C
111 lines
2.1 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) ? bprintf("%d", perc) : 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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};
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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 *unused)
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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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warn("open '/dev/apm':");
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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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warn("ioctl 'APM_IOC_GETPOWER':");
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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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const char *
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battery_state(const char *unused)
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{
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int fd;
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size_t i;
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struct apm_power_info apm_info;
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struct {
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unsigned int state;
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char *symbol;
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} map[] = {
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{ APM_AC_ON, "+" },
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{ APM_AC_OFF, "-" },
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};
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fd = open("/dev/apm", O_RDONLY);
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if (fd < 0) {
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warn("open '/dev/apm':");
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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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warn("ioctl 'APM_IOC_GETPOWER':");
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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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for (i = 0; i < LEN(map); i++) {
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if (map[i].state == apm_info.ac_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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#endif
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