[EGIT PATCH 18/20] New CountingOutputStream class - stream decorator

[Marek Zawirski <marek.zawirski@gmail.com>]

This decorator provides information about number of already written
bytes.

Signed-off-by: Marek Zawirski <marek.zawirski@gmail.com>
---
 .../spearce/jgit/util/CountingOutputStream.java    |   89 ++++++++++++++++++++
 1 files changed, 89 insertions(+), 0 deletions(-)
 create mode 100644 org.spearce.jgit/src/org/spearce/jgit/util/CountingOutputStream.java

diff --git a/org.spearce.jgit/src/org/spearce/jgit/util/CountingOutputStream.java b/org.spearce.jgit/src/org/spearce/jgit/util/CountingOutputStream.java
new file mode 100644
index 0000000..574bb96
--- /dev/null
+++ b/org.spearce.jgit/src/org/spearce/jgit/util/CountingOutputStream.java
@@ -0,0 +1,89 @@
+/*
+ * Copyright (C) 2008, Marek Zawirski <marek.zawirski@gmail.com>
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ *
+ * - Neither the name of the Git Development Community nor the
+ *   names of its contributors may be used to endorse or promote
+ *   products derived from this software without specific prior
+ *   written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+ * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package org.spearce.jgit.util;
+
+import java.io.FilterOutputStream;
+import java.io.IOException;
+import java.io.OutputStream;
+
+/**
+ * Counting output stream decoration. Counts bytes written to stream.
+ */
+public class CountingOutputStream extends FilterOutputStream {
+
+	private int count;
+
+	/**
+	 * Create counting stream being decorated to provided real output stream.
+	 * 
+	 * @param out
+	 *            output stream where data should be written
+	 */
+	public CountingOutputStream(OutputStream out) {
+		super(out);
+	}
+
+	@Override
+	public void write(int b) throws IOException {
+		out.write(b);
+		count++;
+	}
+
+	@Override
+	public void write(byte[] b, int off, int len) throws IOException {
+		out.write(b, off, len);
+		count += len;
+	}
+
+	/**
+	 * Return number of already written bytes.
+	 * 
+	 * @return number of written bytes since last reset (object is reset upon
+	 *         creation)
+	 */
+	public int getCount() {
+		return count;
+	}
+
+	/**
+	 * Reset counter to zero value.
+	 */
+	public void reset() {
+		count = 0;
+	}
+}
-- 
1.5.5.1