Add battery_remaining function on OpenBSD

[slstatus.git] / components / battery.c

diff --git a/components/battery.c b/components/battery.c
index 4c6b4f5..152777e 100644 (file)
--- a/components/battery.c
+++ b/components/battery.c
@@ -45,43 +45,56 @@
                }
                return (i == LEN(map)) ? "?" : map[i].symbol;
        }
+
+       const char *
+       battery_remaining(const char *bat)
+       {
+               /* TODO: Implement */
+               return NULL;
+       }
 #elif defined(__OpenBSD__)
        #include <fcntl.h>
        #include <machine/apmvar.h>
        #include <sys/ioctl.h>
        #include <unistd.h>
 
-       const char *
-       battery_perc(const char *bat)
+       static int
+       load_apm_power_info(struct apm_power_info *apm_info)
        {
-               struct apm_power_info apm_info;
                int fd;
 
-               UNUSED(bat); /* no way to specify battery on OpenBSD */
-
                fd = open("/dev/apm", O_RDONLY);
                if (fd < 0) {
-                       fprintf(stderr, "open '/dev/apm': %s\n", strerror(errno));
-                       return NULL;
+                       warn("open '/dev/apm':");
+                       return 0;
                }
 
-               if (ioctl(fd, APM_IOC_GETPOWER, &apm_info) < 0) {
-                       fprintf(stderr, "ioctl 'APM_IOC_GETPOWER': %s\n",
-                               strerror(errno));
+               memset(apm_info, 0, sizeof(struct apm_power_info));
+               if (ioctl(fd, APM_IOC_GETPOWER, apm_info) < 0) {
+                       warn("ioctl 'APM_IOC_GETPOWER':");
                        close(fd);
-                       return NULL;
+                       return 0;
                }
-               close(fd);
+               return close(fd), 1;
+       }
+
+       const char *
+       battery_perc(const char *unused)
+       {
+               struct apm_power_info apm_info;
 
-               return bprintf("%d", apm_info.battery_life);
+               if (load_apm_power_info(&apm_info)) {
+                       return bprintf("%d", apm_info.battery_life);
+               }
+
+               return NULL;
        }
 
        const char *
-       battery_state(const char *bat)
+       battery_state(const char *unused)
        {
-               int fd;
-               size_t i;
                struct apm_power_info apm_info;
+               size_t i;
                struct {
                        unsigned int state;
                        char *symbol;
@@ -90,27 +103,28 @@
                        { APM_AC_OFF,     "-" },
                };
 
-               UNUSED(bat); /* no way to specify battery on OpenBSD */
-
-               fd = open("/dev/apm", O_RDONLY);
-               if (fd < 0) {
-                       fprintf(stderr, "open '/dev/apm': %s\n", strerror(errno));
-                       return NULL;
+               if (load_apm_power_info(&apm_info)) {
+                       for (i = 0; i < LEN(map); i++) {
+                               if (map[i].state == apm_info.ac_state) {
+                                       break;
+                               }
+                       }
+                       return (i == LEN(map)) ? "?" : map[i].symbol;
                }
 
-               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 NULL;
+       }
 
-               for (i = 0; i < LEN(map); i++) {
-                       if (map[i].state == apm_info.ac_state) {
-                               break;
-                       }
+       const char *
+       battery_remaining(const char *unused)
+       {
+               struct apm_power_info apm_info;
+
+               if (load_apm_power_info(&apm_info)) {
+                       return bprintf("%u:%02u", apm_info.minutes_left / 60,
+                                      apm_info.minutes_left % 60);
                }
-               return (i == LEN(map)) ? "?" : map[i].symbol;
+
+               return NULL;
        }
 #endif