Merge pull request #89 from jeffreypicard/add_utility_funcs

extras/util/strings.go

@@ -1,6 +1,11 @@
 package util
 
-import "strings"
+import (
+	"encoding/hex"
+	"golang.org/x/text/cases"
+	"golang.org/x/text/unicode/norm"
+	"strings"
+)
 
 func StringSplitArg(stringToSplit, separator string) []interface{} {
 	split := strings.Split(stringToSplit, separator)
@@ -10,3 +15,38 @@ func StringSplitArg(stringToSplit, separator string) []interface{} {
 	}
 	return splitInterface
 }
+
+// NormalizeName Normalize names to remove weird characters and account to capitalization
+func NormalizeName(s string) string {
+	c := cases.Fold()
+	return c.String(norm.NFD.String(s))
+}
+// ReverseBytesInPlace reverse the bytes. thanks, Satoshi 😒
+func ReverseBytesInPlace(s []byte) {
+	for i, j := 0, len(s)-1; i < j; i, j = i+1, j-1 {
+		s[i], s[j] = s[j], s[i]
+	}
+}
+
+// TxIdToTxHash convert the txid to a hash for returning from the hub
+func TxIdToTxHash(txid string) []byte {
+	t, err := hex.DecodeString(txid)
+	if err != nil {
+		return nil
+	}
+
+	ReverseBytesInPlace(t)
+
+	return t
+}
+
+// TxHashToTxId convert the txHash from the response format back to an id
+func TxHashToTxId(txHash []byte) string {
+	t := make([]byte, len(txHash))
+	copy(t, txHash)
+
+	ReverseBytesInPlace(t)
+
+	return hex.EncodeToString(t)
+
+}