1 files changed, 96 insertions, 0 deletions
diff --git a/tags/2.5/src/main/java/org/mockftpserver/core/util/StringUtil.java b/tags/2.5/src/main/java/org/mockftpserver/core/util/StringUtil.java
new file mode 100644
index 0000000..090a53c
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+++ b/tags/2.5/src/main/java/org/mockftpserver/core/util/StringUtil.java
@@ -0,0 +1,96 @@
+/*
+ * Copyright 2008 the original author or authors.
+ *
+ * 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 org.mockftpserver.core.util;
+
+import java.util.Collection;
+import java.util.Iterator;
+
+/**
+ * Contains static String-related utility methods.
+ *
+ * @author Chris Mair
+ * @version $Revision$ - $Date$
+ */
+public class StringUtil {
+
+    /**
+     * Pad the specified String with spaces to the right to the specified width. If the length
+     * of string is already equal to or greater than width, then just return string.
+     *
+     * @param string - the String to pad
+     * @param width  - the target width
+     * @return a String of at least width characters, padded on the right with spaces as necessary
+     */
+    public static String padRight(String string, int width) {
+        int numSpaces = width - string.length();
+        return (numSpaces > 0) ? string + spaces(numSpaces) : string;
+    }
+
+    /**
+     * Pad the specified String with spaces to the left to the specified width. If the length
+     * of string is already equal to or greater than width, then just return string.
+     *
+     * @param string - the String to pad
+     * @param width  - the target width
+     * @return a String of at least width characters, padded on the left with spaces as necessary
+     */
+    public static String padLeft(String string, int width) {
+        int numSpaces = width - string.length();
+        return (numSpaces > 0) ? spaces(numSpaces) + string : string;
+    }
+
+    /**
+     * Join the Strings within the parts Collection, inserting the delimiter in between elements
+     *
+     * @param parts     - the Collection of Strings to join
+     * @param delimiter - the delimiter String to insert between the parts
+     * @return the Strings within the parts collection joined together using the specified delimiter
+     */
+    public static String join(Collection parts, String delimiter) {
+        Assert.notNull(parts, "parts");
+        Assert.notNull(delimiter, "delimiter");
+
+        StringBuffer buf = new StringBuffer();
+        Iterator iter = parts.iterator();
+        while (iter.hasNext()) {
+            String component = (String) iter.next();
+            buf.append(component);
+            if (iter.hasNext()) {
+                buf.append(delimiter);
+            }
+        }
+        return buf.toString();
+    }
+
+    //--------------------------------------------------------------------------
+    // Internal Helper Methods
+    //--------------------------------------------------------------------------
+
+    private static String spaces(int numSpaces) {
+        StringBuffer buf = new StringBuffer();
+        for (int i = 0; i < numSpaces; i++) {
+            buf.append(" ");
+        }
+        return buf.toString();
+    }
+
+    /**
+     * Private constructor to prevent instantiation. All members are static.
+     */
+    private StringUtil() {
+    }
+
+}
+\ No newline at end of file