1 files changed, 123 insertions, 0 deletions
diff --git a/bundles/org.eclipse.osgi/container/src/org/eclipse/core/runtime/internal/stats/ResourceBundleStats.java b/bundles/org.eclipse.osgi/container/src/org/eclipse/core/runtime/internal/stats/ResourceBundleStats.java
new file mode 100644
index 000000000..2c072f91c
--- /dev/null
+++ b/bundles/org.eclipse.osgi/container/src/org/eclipse/core/runtime/internal/stats/ResourceBundleStats.java
@@ -0,0 +1,123 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2010 IBM Corporation and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     IBM Corporation - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.core.runtime.internal.stats;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.net.URL;
+import java.util.*;
+
+/**
+ * BundleStats is used to represent information about loaded bundle. A
+ * bundlestats instance represents only one bundle.
+ */
+
+public class ResourceBundleStats {
+	private String pluginId; // the plugin loading this bundle
+	private String fileName; // the filename of the bundle 
+	private int keyCount = 0; // number of keys in the bundle
+	private int keySize = 0; // size of the keys in the bundle
+	private int valueSize = 0; // size of the values in the bundle 
+	private long hashSize = 0; // size of the hashtable
+	private long fileSize = 0;
+
+	private static int sizeOf(String value) {
+		return 44 + (2 * value.length());
+	}
+
+	private static int sizeOf(Properties value) {
+		return (int) Math.round(44 + (16 + (value.size() * 1.25 * 4)) + (24 * value.size()));
+	}
+
+	public ResourceBundleStats(String pluginId, String fileName, URL input) {
+		this.pluginId = pluginId;
+		this.fileName = fileName;
+		initialize(input);
+	}
+
+	public ResourceBundleStats(String pluginId, String fileName, ResourceBundle bundle) {
+		this.pluginId = pluginId;
+		this.fileName = fileName;
+		initialize(bundle);
+	}
+
+	/**
+	 * Compute the size of bundle
+	 */
+	private void initialize(ResourceBundle bundle) {
+		for (Enumeration<String> keys = bundle.getKeys(); keys.hasMoreElements();) {
+			String key = keys.nextElement();
+			keySize += sizeOf(key);
+			valueSize += sizeOf(bundle.getString(key));
+			keyCount++;
+		}
+	}
+
+	/**
+	 * Compute the size of stream which represents a property file
+	 */
+	private void initialize(URL url) {
+		InputStream stream = null;
+		Properties props = new Properties();
+		try {
+			try {
+				stream = url.openStream();
+				fileSize = stream.available();
+				props.load(stream);
+				for (Iterator<Object> iter = props.keySet().iterator(); iter.hasNext();) {
+					String key = (String) iter.next();
+					keySize += sizeOf(key);
+					valueSize += sizeOf(props.getProperty(key));
+					keyCount++;
+				}
+				hashSize = sizeOf(props);
+			} finally {
+				if (stream != null)
+					stream.close();
+			}
+		} catch (IOException e) {
+			// ignore exceptions as they will be handled when the stream 
+			// is loaded for real.   See callers.
+		}
+	}
+
+	public long getHashSize() {
+		return hashSize;
+	}
+
+	public int getKeyCount() {
+		return keyCount;
+	}
+
+	public String getPluginId() {
+		return pluginId;
+	}
+
+	public int getKeySize() {
+		return keySize;
+	}
+
+	public int getValueSize() {
+		return valueSize;
+	}
+
+	public long getTotalSize() {
+		return keySize + valueSize + hashSize;
+	}
+
+	public String getFileName() {
+		return fileName;
+	}
+
+	public long getFileSize() {
+		return fileSize;
+	}
+}