1 files changed, 43 insertions, 0 deletions
diff --git a/utils/utils.go b/utils/utils.go
new file mode 100644
index 0000000..4e16ba3
--- /dev/null
+++ b/utils/utils.go
@@ -0,0 +1,43 @@
+package utils
+
+import (
+	"fmt"
+)
+
+// BytesToInt converts a slice of bytes to an int. Only 8- and 16-bit uints are
+// supported, because those are the only thing the control tables contain.
+func BytesToInt(b []byte) (int, error) {
+
+	switch len(b) {
+	case 1:
+		return int(b[0]), nil
+
+	case 2:
+		return int(b[0]) | int(b[1])<<8, nil
+
+	default:
+		return 0, fmt.Errorf("invalid read length %d", len(b))
+
+	}
+}
+
+// BoolToInt converts a bool to an int.
+func BoolToInt(b bool) int {
+	if b {
+		return 1
+	}
+	return 0
+}
+
+// IntToBool converts an int to a bool.
+func IntToBool(v int) bool {
+	return (v != 0)
+}
+
+func Low(i uint16) byte {
+	return byte(i & 0xFF)
+}
+
+func High(i uint16) byte {
+	return Low(i >> 8)
+}