battery: OS split

Makefile

@@ -7,7 +7,7 @@ include config.mk
 
 REQ = util
 COM =\
-	components/battery\
+	components/$(OS)/battery \
 	components/cpu\
 	components/datetime\
 	components/disk\

components/Linux/battery.c

@@ -2,19 +2,11 @@
 #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"
+#include "../../util.h"
 
-#if defined(__linux__)
 const char *
 battery_perc(const char *bat)
 {
@@ -25,31 +17,7 @@ battery_perc(const char *bat)
 	return (pscanf(path, "%i", &perc) == 1) ?
 	       bprintf("%d", perc) : NULL;
 }
-#elif defined(__OpenBSD__)
-const char *
-battery_perc(const char *null)
-{
-	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)
 {
@@ -88,4 +56,3 @@ battery_state(const char *bat)
 	}
 	return (i == LEN(map)) ? "?" : map[i].symbol;
 }
-#endif

components/OpenBSD/battery.c

@@ -0,0 +1,32 @@
+/* See LICENSE file for copyright and license details. */
+#include <errno.h>
+#include <stdio.h>
+#include <string.h>
+#include <sys/ioctl.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <machine/apmvar.h>
+
+#include "../../util.h"
+
+const char *
+battery_perc(const char *null)
+{
+	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);
+}