diff -r ed1c9f64298a -r 5b9d4d8641ce trace/traceviewer/com.nokia.traceviewer.ost/src/com/nokia/traceviewer/ost/OstDataMatcherChecker.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/trace/traceviewer/com.nokia.traceviewer.ost/src/com/nokia/traceviewer/ost/OstDataMatcherChecker.java	Wed Jun 23 14:49:59 2010 +0300
@@ -0,0 +1,81 @@
+/*
+ * Copyright (c) 2007-2010 Nokia Corporation and/or its subsidiary(-ies). 
+ * All rights reserved.
+ * This component and the accompanying materials are made available
+ * under the terms of "Eclipse Public License v1.0"
+ * which accompanies this distribution, and is available
+ * at the URL "http://www.eclipse.org/legal/epl-v10.html".
+ *
+ * Initial Contributors:
+ * Nokia Corporation - initial contribution.
+ *
+ * Contributors:
+ *
+ * Description:
+ *
+ * OST Data Matcher Checker
+ *
+ */
+package com.nokia.traceviewer.ost;
+
+import java.io.FileInputStream;
+import java.io.IOException;
+
+import com.nokia.traceviewer.engine.TraceViewerConst;
+
+/**
+ * OST Data Matcher Checker
+ * 
+ */
+public class OstDataMatcherChecker implements OstConsts, TraceViewerConst {
+
+	/**
+	 * Checks if file format seems to match
+	 * 
+	 * @param filePath
+	 *            file path
+	 * @return true if file format seems to match, false if not
+	 */
+	boolean checkIfFileFormatMatches(String filePath) {
+		boolean matches = false;
+		FileInputStream is = null;
+		try {
+			is = new FileInputStream(filePath);
+			if (is.available() > 0) {
+				byte[] arr = new byte[OST_V05_PROTOCOLID_OFFSET + 1];
+				is.read(arr);
+				int versionNumber = 0;
+				int msgId = 0;
+
+				// Get version number and message ID
+				versionNumber |= arr[OST_VERSION_OFFSET] & BYTE_MASK;
+
+				// Version must be 0.0, 0.1, 0.5 or 1.0
+				if (versionNumber == OST_V00 || versionNumber == OST_V01) {
+					msgId |= arr[OST_V01_PROTOCOLID_OFFSET] & BYTE_MASK;
+				} else if (versionNumber == OST_V05 || versionNumber == OST_V10) {
+					msgId |= arr[OST_V05_PROTOCOLID_OFFSET] & BYTE_MASK;
+				}
+
+				// Message ID must be Simple Trace or ASCII
+				if (msgId == OST_SIMPLE_TRACE_ID || msgId == OST_ASCII_TRACE_ID) {
+					matches = true;
+				}
+			}
+
+		} catch (IOException e) {
+
+			// Close the stream
+		} finally {
+			if (is != null) {
+				try {
+					is.close();
+				} catch (IOException e) {
+				}
+			}
+
+		}
+
+		return matches;
+	}
+}