From a502d96a860456ec5e8c96761db70f7cabb74751 Mon Sep 17 00:00:00 2001
From: Paul Martin <paul@paulsputer.com>
Date: Sat, 30 Apr 2016 04:19:14 -0400
Subject: [PATCH] Merge pull request #1073 from gitblit/1062-DocEditorUpdates
---
src/main/java/com/gitblit/utils/DeepCopier.java | 36 +++++++++++++++++++++++++++++++++++-
1 files changed, 35 insertions(+), 1 deletions(-)
diff --git a/src/main/java/com/gitblit/utils/DeepCopier.java b/src/main/java/com/gitblit/utils/DeepCopier.java
index 5df3062..fc76f1a 100644
--- a/src/main/java/com/gitblit/utils/DeepCopier.java
+++ b/src/main/java/com/gitblit/utils/DeepCopier.java
@@ -23,8 +23,41 @@
import java.io.ObjectOutputStream;
import java.io.PipedInputStream;
import java.io.PipedOutputStream;
+import java.math.BigInteger;
+import java.security.MessageDigest;
+import java.security.NoSuchAlgorithmException;
public class DeepCopier {
+
+ /**
+ * Utility method to calculate the checksum of an object.
+ * @param sourceObject The object from which to establish the checksum.
+ * @return The checksum
+ * @throws IOException
+ */
+ public static BigInteger checksum(Object sourceObject) {
+
+ if (sourceObject == null) {
+ return BigInteger.ZERO;
+ }
+
+ try {
+ ByteArrayOutputStream baos = new ByteArrayOutputStream();
+ ObjectOutputStream oos = new ObjectOutputStream(baos);
+ oos.writeObject(sourceObject);
+ oos.close();
+
+ MessageDigest m = MessageDigest.getInstance("SHA-1");
+ m.update(baos.toByteArray());
+ return new BigInteger(1, m.digest());
+ } catch (IOException e) {
+ throw new RuntimeException(e);
+ } catch (NoSuchAlgorithmException e) {
+ // impossible
+ }
+
+ return BigInteger.ZERO;
+ }
/**
* Produce a deep copy of the given object. Serializes the entire object to
@@ -57,7 +90,7 @@
* very large objects. The current thread is used for serializing the
* original object in order to respect any synchronization the caller may
* have around it, and a new thread is used for deserializing the copy.
- *
+ *
*/
public static <T> T copyParallel(T original) {
try {
@@ -88,6 +121,7 @@
start();
}
+ @Override
@SuppressWarnings("unchecked")
public void run() {
--
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