From 588f173254f33a03834eb475f9b91a2135afe57c Mon Sep 17 00:00:00 2001
From: magenoxx <magenoxx@gmail>
Date: Wed, 8 Jun 2011 20:15:40 +0400
Subject: [PATCH] Utility class for configurable compressing objects.

---
 Mage.Common/src/mage/utils/CompressUtil.java | 58 ++++++++++++++++++++
 1 file changed, 58 insertions(+)
 create mode 100644 Mage.Common/src/mage/utils/CompressUtil.java

diff --git a/Mage.Common/src/mage/utils/CompressUtil.java b/Mage.Common/src/mage/utils/CompressUtil.java
new file mode 100644
index 0000000000..a9f4e4fbfa
--- /dev/null
+++ b/Mage.Common/src/mage/utils/CompressUtil.java
@@ -0,0 +1,58 @@
+package mage.utils;
+
+import mage.remote.traffic.ZippedObject;
+import mage.remote.traffic.ZippedObjectImpl;
+
+/**
+ * Helps to compress and decompress data if needed.
+ *
+ * @author ayrat
+ */
+public class CompressUtil {
+
+    /**
+     * Defines should data be compressed or not. True by default.
+     * Read from system property:
+     */
+	private static boolean compressData = true;
+
+    /**
+     * Defines the system property name to disable any compressing.
+     */
+    private static final String NO_COMPRESS_DATA_PROPERTY = "nocompress";
+
+    static {
+        compressData = System.getProperty(NO_COMPRESS_DATA_PROPERTY) == null;
+    }
+
+    /**
+     * Hidden constructor
+     */
+    private CompressUtil() {}
+
+    /**
+     * Decompress data, but only if it was compressed previously return original object otherwise.
+     *
+     * @param data Data to decompress
+     * @return Decompressed object
+     */
+    public static Object decompress(Object data) {
+        if (data == null || !(data instanceof ZippedObject)) {
+            return data;
+        }
+        return ((ZippedObject)data).unzip();
+    }
+
+    /**
+     * Compress data.
+     *
+     * @param data Data to compress
+     * @return Compressed object
+     */
+    public static Object compress(Object data) {
+        if (data != null && compressData) {
+            return new ZippedObjectImpl<Object>(data);
+        }
+        return null;
+    }
+}