trakt: strip non alphanumeric characters from imdb id

util/default.go

@@ -1,8 +1,6 @@
 package util
 
 import (
-	"crypto/sha256"
-	"fmt"
 	"strconv"
 	"strings"
 )
@@ -22,11 +20,3 @@ func Atof64(val string, defaultVal float64) float64 {
 	}
 	return n
 }
-
-func AsSHA256(o interface{}) string {
-	// credits: https://blog.8bitzen.com/posts/22-08-2019-how-to-hash-a-struct-in-go
-	h := sha256.New()
-	h.Write([]byte(fmt.Sprintf("%v", o)))
-
-	return fmt.Sprintf("%x", h.Sum(nil))
-}

util/hash.go

@@ -0,0 +1,14 @@
+package util
+
+import (
+	"crypto/sha256"
+	"fmt"
+)
+
+func AsSHA256(o interface{}) string {
+	// credits: https://blog.8bitzen.com/posts/22-08-2019-how-to-hash-a-struct-in-go
+	h := sha256.New()
+	h.Write([]byte(fmt.Sprintf("%v", o)))
+
+	return fmt.Sprintf("%x", h.Sum(nil))
+}

util/string.go

@@ -0,0 +1,20 @@
+package util
+
+import "regexp"
+
+var (
+	reStripNonAlphaNumeric *regexp.Regexp
+)
+
+func init() {
+	reg, err := regexp.Compile("[^a-zA-Z0-9]+")
+	if err != nil {
+		panic(err)
+	}
+	reStripNonAlphaNumeric = reg
+}
+
+func StripNonAlphaNumeric(value string) string {
+	// credits: https://golangcode.com/how-to-remove-all-non-alphanumerical-characters-from-a-string/
+	return reStripNonAlphaNumeric.ReplaceAllString(value, "")
+}