1 files changed, 65 insertions, 0 deletions
diff --git a/src/main/java/com/gitblit/utils/ByteFormat.java b/src/main/java/com/gitblit/utils/ByteFormat.java
new file mode 100644
index 00000000..cb7da885
--- /dev/null
+++ b/src/main/java/com/gitblit/utils/ByteFormat.java
@@ -0,0 +1,65 @@
+/*
+ * Copyright 2011 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.text.DecimalFormat;
+import java.text.FieldPosition;
+import java.text.Format;
+import java.text.ParsePosition;
+
+/**
+ * ByteFormat is a formatter which takes numbers and returns filesizes in bytes,
+ * kilobytes, megabytes, or gigabytes.
+ * 
+ * @author James Moger
+ * 
+ */
+public class ByteFormat extends Format {
+
+	private static final long serialVersionUID = 1L;
+
+	public ByteFormat() {
+	}
+
+	public String format(long value) {
+		return format(Long.valueOf(value));
+	}
+
+	public StringBuffer format(Object obj, StringBuffer buf, FieldPosition pos) {
+		if (obj instanceof Number) {
+			long numBytes = ((Number) obj).longValue();
+			if (numBytes < 1024) {
+				DecimalFormat formatter = new DecimalFormat("#,##0");
+				buf.append(formatter.format((double) numBytes)).append(" b");
+			} else if (numBytes < 1024 * 1024) {
+				DecimalFormat formatter = new DecimalFormat("#,##0");
+				buf.append(formatter.format((double) numBytes / 1024.0)).append(" KB");
+			} else if (numBytes < 1024 * 1024 * 1024) {
+				DecimalFormat formatter = new DecimalFormat("#,##0.0");
+				buf.append(formatter.format((double) numBytes / (1024.0 * 1024.0))).append(" MB");
+			} else {
+				DecimalFormat formatter = new DecimalFormat("#,##0.0");
+				buf.append(formatter.format((double) numBytes / (1024.0 * 1024.0 * 1024.0)))
+						.append(" GB");
+			}
+		}
+		return buf;
+	}
+
+	public Object parseObject(String source, ParsePosition pos) {
+		return null;
+	}
+}