1 files changed, 34 insertions, 0 deletions
diff --git a/utils/convert.go b/utils/convert.go
new file mode 100644
index 00000000..8d153ce5
--- /dev/null
+++ b/utils/convert.go
@@ -0,0 +1,34 @@
+package utils
+
+import (
+	"reflect"
+	"unsafe"
+)
+
+// AsBytes returns a slice that refers to the data backing the string s.
+func AsBytes(s string) []byte {
+	// get the pointer to the data of the string
+	p := unsafe.Pointer((*reflect.StringHeader)(unsafe.Pointer(&s)).Data)
+
+	var b []byte
+	hdr := (*reflect.SliceHeader)(unsafe.Pointer(&b))
+	hdr.Data = uintptr(p)
+	// we need to set the cap and len for the string to byte convert
+	// because string is shorter than []bytes
+	hdr.Cap = len(s)
+	hdr.Len = len(s)
+
+	return b
+}
+
+// AsString returns a string that refers to the data backing the slice s.
+func AsString(b []byte) string {
+	p := unsafe.Pointer((*reflect.SliceHeader)(unsafe.Pointer(&b)).Data)
+
+	var s string
+	hdr := (*reflect.StringHeader)(unsafe.Pointer(&s))
+	hdr.Data = uintptr(p)
+	hdr.Len = len(b)
+
+	return s
+}