1 files changed, 36 insertions, 0 deletions
diff --git a/src/main/java/io/github/moulberry/notenoughupdates/util/IteratorUtils.java b/src/main/java/io/github/moulberry/notenoughupdates/util/IteratorUtils.java
new file mode 100644
index 00000000..32cd5fad
--- /dev/null
+++ b/src/main/java/io/github/moulberry/notenoughupdates/util/IteratorUtils.java
@@ -0,0 +1,36 @@
+/*
+ * Copyright (C) 2022 NotEnoughUpdates contributors
+ *
+ * This file is part of NotEnoughUpdates.
+ *
+ * NotEnoughUpdates is free software: you can redistribute it
+ * and/or modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation, either
+ * version 3 of the License, or (at your option) any later version.
+ *
+ * NotEnoughUpdates is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with NotEnoughUpdates. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package io.github.moulberry.notenoughupdates.util;
+
+import java.util.Iterator;
+
+public class IteratorUtils {
+
+	public static <T> T getOnlyElement(Iterator<T> it, T defaultValue) {
+		if (!it.hasNext()) return defaultValue;
+		T ret = it.next();
+		if (it.hasNext()) return defaultValue;
+		return ret;
+	}
+
+	public static <T> T getOnlyElement(Iterable<T> it, T defaultValue) {
+		return getOnlyElement(it.iterator(), defaultValue);
+	}
+}