// error.h

// 

// Copyright (c) 2008 - 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

//

#ifndef __ERROR_H__

#define __ERROR_H__

#include <e32base.h>

class RIoWriteHandle;

namespace IoUtils

	{

	class CEnvironment;

	}

class TError

	{

public:

	enum TReason

		{

		EUnknown,

		EFailedToCreatePipeLine,

		EFailedToConstructCommand,

		EFailedToRunCommand,

		EFailedToSetChildErrorVar,

		ECommandError,

		EFailedToSetScriptLineVar,

		};

public:

	TError(RIoWriteHandle& aStderr, IoUtils::CEnvironment& aEnv);

	void Set(const TError& aError);

	void Set(TInt aError, TReason aReason);

	void Set(TInt aError, TReason aReason, TRefByValue<const TDesC> aFmt, ...);

	void Report() const;

	TInt Error() const;

	TReason Reason() const;

	const TDesC* Context() const;

	const TDesC& ScriptFileName() const;

	TInt ScriptLineNumber() const;

private:

	void Format(TRefByValue<const TDesC> aFmt, ...);

	void FormatList(TRefByValue<const TDesC> aFmt, VA_LIST& aList);

	void LogIfRequired(TInt aError, TReason aReason, TRefByValue<const TDesC> aFmt, ...);

	void LogListIfRequired(TInt aError, TReason aReason, TRefByValue<const TDesC> aFmt, VA_LIST& aList);

	const TDesC* StringifyReason(TReason aReason) const;

	TBool Verbose() const;

	void NewLine() const;

	void PrintError() const;

	void FormatError(TRefByValue<const TDesC> aFmt, ...) const;

private:

	RIoWriteHandle* iStderr;

	IoUtils::CEnvironment* iEnv;

	TInt iError;

	TReason iReason;

	TBool iSet;

	TBuf<256> iContext;

	mutable TBuf<512> iScratch;

	TFileName iScriptFileName;

	TInt iScriptLineNumber;

	};

#endif // __ERROR_H__