Util/IterableSplitString: add template class BasicIterableSplitString

src/util/IterableSplitString.hxx

@@ -42,23 +42,28 @@
  *
  * An empty input string returns one empty string.
  */
-class IterableSplitString {
-	StringView s;
+template<typename T>
+class BasicIterableSplitString {
+	typedef BasicStringView<T> StringView;
+
+	typedef typename StringView::value_type value_type;
 
-	char separator;
+	StringView s;
+	value_type separator;
 
 public:
-	constexpr IterableSplitString(StringView _s, char _separator)
+	constexpr BasicIterableSplitString(StringView _s,
+					   value_type _separator)
 		:s(_s), separator(_separator) {}
 
 	class Iterator final {
-		friend class IterableSplitString;
+		friend class BasicIterableSplitString;
 
 		StringView current, rest;
 
-		char separator;
+		value_type separator;
 
-		Iterator(StringView _s, char _separator)
+		Iterator(StringView _s, value_type _separator)
 			:rest(_s), separator(_separator) {
 			Next();
 		}
@@ -70,7 +75,7 @@ public:
 			if (rest.IsNull())
 				current = nullptr;
 			else {
-				const char *i = rest.Find(separator);
+				const auto *i = rest.Find(separator);
 				if (i == nullptr) {
 					current = rest;
 					rest.data = nullptr;
@@ -120,4 +125,6 @@ public:
 	}
 };
 
+using IterableSplitString = BasicIterableSplitString<char>;
+
 #endif