1 files changed, 74 insertions, 0 deletions
diff --git a/src/main/java/com/gitblit/utils/ArrayUtils.java b/src/main/java/com/gitblit/utils/ArrayUtils.java
new file mode 100644
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+++ b/src/main/java/com/gitblit/utils/ArrayUtils.java
@@ -0,0 +1,74 @@
+/*
+ * Copyright 2012 gitblit.com.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.gitblit.utils;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.List;
+
+
+/**
+ * Utility class for arrays and collections.
+ * 
+ * @author James Moger
+ * 
+ */
+public class ArrayUtils {
+
+	public static boolean isEmpty(byte [] array) {
+		return array == null || array.length == 0;
+	}
+
+	public static boolean isEmpty(char [] array) {
+		return array == null || array.length == 0;
+	}
+
+	public static boolean isEmpty(Object [] array) {
+		return array == null || array.length == 0;
+	}
+	
+	public static boolean isEmpty(Collection<?> collection) {
+		return collection == null || collection.size() == 0;
+	}
+	
+	public static String toString(Collection<?> collection) {
+		if (isEmpty(collection)) {
+			return "";
+		}
+		StringBuilder sb = new StringBuilder();
+		for (Object o : collection) {
+			sb.append(o.toString()).append(", ");
+		}
+		// trim trailing comma-space
+		sb.setLength(sb.length() - 2);
+		return sb.toString();
+	}
+	
+	public static Collection<String> fromString(String value) {
+		if (StringUtils.isEmpty(value)) {
+			value = "";
+		}
+		List<String> list = new ArrayList<String>();
+		String [] values = value.split(",|;");
+		for (String v : values) {
+			String string = v.trim();
+			if (!StringUtils.isEmpty(string)) {
+				list.add(string);
+			}
+		}
+		return list;
+	}
+}