// sbrec.cpp

// 

// Copyright (c) 2007 - 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

//

// Description:

// Recognizes files that begin with a "shebang" ("#!").

#include <e32debug.h>

#include <apmrec.h>

#include <apmstd.h>

#include <implementationproxy.h> 

#include <fshell/common.mmh>

#include "sbrec.h"

//

// Constants.

//

const TUid KShebangRecognizerUid = {FSHELL_UID_SBREC};

const TInt KShebangRecognizerImplementationUidValue = {0x102835C1};

_LIT8(KShebang, "#!");

_LIT8(KShebangDataType, "X-Symbian-Shebang");

#ifdef FSHELL_PATCHABLE_CONSTANTS_SUPPORT

EXPORT_C extern const TBool KAutoStartFshell; // from patchdata.cpp

#endif

//

// CShebangRecognizer.

//

CShebangRecognizer::CShebangRecognizer()

	: CApaDataRecognizerType(KShebangRecognizerUid, CApaDataRecognizerType::EHigh)

	{

	iCountDataTypes = 1;

	}

TUint CShebangRecognizer::PreferredBufSize()

	{

	return 2;

	}

TDataType CShebangRecognizer::SupportedDataTypeL(TInt /*aIndex*/) const

	{

	return TDataType(KShebangDataType);

	}

void CShebangRecognizer::DoRecognizeL(const TDesC& /*aName*/, const TDesC8& aBuffer)

	{

	if ((aBuffer.Length() >= 2) && (aBuffer.Left(2) == KShebang))

		{

		iDataType = TDataType(KShebangDataType);

		iConfidence = ECertain;

		}

	}

CApaDataRecognizerType* CShebangRecognizer::CreateRecognizerL()

	{

#ifdef FSHELL_PATCHABLE_CONSTANTS_SUPPORT

	if (KAutoStartFshell)

		{

	_LIT(KFshell, "fshell.exe");

		_LIT(KArgs, "autostart.script");

		RProcess proc;

		TInt err = proc.Create(KFshell, KArgs);

		if (err)

			{

			RDebug::Printf("Couldn't start fshell, err=%d", err);

			}

		else

			{

			proc.Resume();

			proc.Close();

			}

		}

#endif

	return new (ELeave) CShebangRecognizer();

	}

//

// ECOM boiler-plate.

//

const TImplementationProxy ImplementationTable[] = 

	{

	IMPLEMENTATION_PROXY_ENTRY(KShebangRecognizerImplementationUidValue, CShebangRecognizer::CreateRecognizerL)

	};

EXPORT_C const TImplementationProxy* ImplementationGroupProxy(TInt& aTableCount)

	{

	aTableCount = sizeof(ImplementationTable) / sizeof(TImplementationProxy);

	return ImplementationTable;

	}

GLDEF_C TInt E32Dll()

	{

	return KErrNone;

	}