1 files changed, 59 insertions, 0 deletions
diff --git a/src/print_cpu_temperature.c b/src/print_cpu_temperature.c
new file mode 100644
index 0000000..d524f0b
--- /dev/null
+++ b/src/print_cpu_temperature.c
@@ -0,0 +1,59 @@
+// vim:ts=8:expandtab
+#include <stdlib.h>
+#include <limits.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "i3status.h"
+
+#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
+#include <err.h>
+#include <sys/types.h>
+#include <sys/sysctl.h>
+#define TZ_ZEROC 2732
+#define TZ_KELVTOC(x) (((x) - TZ_ZEROC) / 10), abs(((x) - TZ_ZEROC) % 10)
+#endif
+
+static char *thermal_zone;
+
+/*
+ * Reads the CPU temperature from /sys/class/thermal/thermal_zone0/temp and
+ * returns the temperature in degree celcius.
+ *
+ */
+void print_cpu_temperature_info(int zone, const char *format) {
+        const char *walk;
+        static char buf[16];
+
+        asprintf(&thermal_zone, THERMAL_ZONE, zone);
+
+        for (walk = format; *walk != '\0'; walk++) {
+                if (*walk != '%') {
+                        putchar(*walk);
+                        continue;
+                }
+
+                if (BEGINS_WITH(walk+1, "degrees")) {
+#if defined(LINUX)
+                        long int temp;
+                        if (!slurp(thermal_zone, buf, sizeof(buf)))
+                                die("Could not open \"%s\"\n", thermal_zone);
+                        temp = strtol(buf, NULL, 10);
+                        if (temp == LONG_MIN || temp == LONG_MAX || temp <= 0)
+                                (void)printf("?");
+                        else
+                                (void)printf("%ld", (temp/1000));
+#elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
+                        int sysctl_rslt;
+                        size_t sysctl_size = sizeof(sysctl_rslt);
+                        if (sysctlbyname(thermal_zone, &sysctl_rslt, &sysctl_size, NULL, 0)) {
+                                (void)printf("No thermal zone found");
+                                return;
+                        }
+
+                        (void)printf("%d.%d", TZ_KELVTOC(sysctl_rslt));
+#endif
+                        walk += strlen("degrees");
+                }
+        }
+}