move all files to common/ to begin repo merge

common/byteslice.go

@@ -0,0 +1,44 @@
+package common
+
+import (
+	"bytes"
+)
+
+func Fingerprint(slice []byte) []byte {
+	fingerprint := make([]byte, 6)
+	copy(fingerprint, slice)
+	return fingerprint
+}
+
+func IsZeros(slice []byte) bool {
+	for _, byt := range slice {
+		if byt != byte(0) {
+			return false
+		}
+	}
+	return true
+}
+
+func RightPadBytes(slice []byte, l int) []byte {
+	if l < len(slice) {
+		return slice
+	}
+	padded := make([]byte, l)
+	copy(padded[0:len(slice)], slice)
+	return padded
+}
+
+func LeftPadBytes(slice []byte, l int) []byte {
+	if l < len(slice) {
+		return slice
+	}
+	padded := make([]byte, l)
+	copy(padded[l-len(slice):], slice)
+	return padded
+}
+
+func TrimmedString(b []byte) string {
+	trimSet := string([]byte{0})
+	return string(bytes.TrimLeft(b, trimSet))
+
+}