--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/commands/tail/tail.h	Wed Jun 23 15:52:26 2010 +0100
@@ -0,0 +1,69 @@
+// tail.h
+// 
+// Copyright (c) 2005 - 2010 Accenture. All rights reserved.
+// This component 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 the URL "http://www.eclipse.org/legal/epl-v10.html".
+// 
+// Initial Contributors:
+// Accenture - Initial contribution
+//
+
+#include <fshell/ioutils.h>
+#include "file_reader.h"
+#include "character_converter.h"
+
+using namespace IoUtils;
+
+class CFileWatcher;
+class CTrailingLineFinder;
+
+
+class MTrailingLineFinderObserver
+	{
+public:
+	virtual void HandleTrailingLines(TInt aNumLinesFound, TInt aEndFilePos) = 0;
+	virtual void HandleTrailingLineError(TInt aError) = 0;
+	};
+
+
+class MFileChangeObserver
+	{
+public:
+	virtual void HandleFileChange(const TDesC& aFileName) = 0;
+	};
+
+
+class CCmdTail : public CCommandBase, public MTrailingLineFinderObserver, public MFileChangeObserver, public MFileReaderObserver
+	{
+public:
+	static CCommandBase* NewLC();
+	~CCmdTail();
+private:
+	CCmdTail();
+	void ConstructL();
+	void WriteChunkToConsoleL(const TDesC8& aData, TReadType aType);
+private: // From CCommandBase.
+	virtual const TDesC& Name() const;
+	virtual void DoRunL();
+	virtual void OptionsL(RCommandOptionList& aOptions);
+	virtual void ArgumentsL(RCommandArgumentList& aArguments);
+private: // From MTrailingLineFinderObserver.
+	virtual void HandleTrailingLines(TInt aNumLinesFound, TInt aEndFilePos);
+	virtual void HandleTrailingLineError(TInt aError);
+private: // From MFileChangeObserver.
+	virtual void HandleFileChange(const TDesC& aFileName);
+private: // From MFileReaderObserver.
+	virtual void HandleFileData(const TDesC8& aData, TReadType aType, TBool& aContinue);
+	virtual void HandleFileReadError(TInt aError);
+private:
+	TFileName2 iFileName;
+	CCharacterConverter* iCharacterConverter;
+	CTrailingLineFinder* iTrailingLineFinder;
+	CFileWatcher* iFileWatcher;
+	CFileReader* iFileReader;
+	TBool iFollow;
+	TInt iNumLines;
+	TInt iFilePos;
+	};