trakt: strip non alphanumeric characters from imdb id

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, "")
+}