/*

* Copyright (c) 2003-2009 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the License "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: 

*

*/

#include <apmstd.h>

#include <caf/data.h>

#include <caf/agentinterface.h>

#include "agentinfo.h"

#include <caf/agentfactory.h>

#include <caf/attributeset.h>

#include <caf/virtualpath.h>

#include "resolver.h"

#include "agentinfo.h"

#include <e32def.h>

using namespace ContentAccess;

EXPORT_C CData* CData::NewL(const TVirtualPathPtr& aVirtualPath, TIntent aIntent, TContentShareMode aShareMode)

	{

	CData *self = CData::NewLC(aVirtualPath, aIntent, aShareMode);

	CleanupStack::Pop(self);

	return self;

	}

EXPORT_C CData* CData::NewLC(const TVirtualPathPtr& aVirtualPath, TIntent aIntent, TContentShareMode aShareMode)

	{

	CData *self = new (ELeave) CData;

	CleanupStack::PushL(self);

	self->ConstructL(aVirtualPath, aIntent, aShareMode);

	return self;

	}

EXPORT_C CData* CData::NewL(RFile& aFile, const TDesC& aUniqueId, TIntent aIntent)

	{

	CData *self = CData::NewLC(aFile, aUniqueId, aIntent);

	CleanupStack::Pop(self);

	return self;

	}

EXPORT_C CData* CData::NewLC(RFile& aFile, const TDesC& aUniqueId, TIntent aIntent)

	{

	CData *self = new (ELeave) CData;

	CleanupStack::PushL(self);

	self->ConstructL(aFile, aUniqueId, aIntent);

	return self;

	}

EXPORT_C CData* CData::NewL(const TVirtualPathPtr& aVirtualPath, TContentShareMode aShareMode)

	{

	CData *self = CData::NewLC(aVirtualPath, aShareMode);

	CleanupStack::Pop(self);

	return self;

	}

EXPORT_C CData* CData::NewLC(const TVirtualPathPtr& aVirtualPath, TContentShareMode aShareMode)

	{

	CData *self = new (ELeave) CData;

	CleanupStack::PushL(self);

	self->ConstructL(aVirtualPath, aShareMode);

	return self;

	}

EXPORT_C CData* CData::NewL(RFile& aFile, const TDesC& aUniqueId)

	{

	CData *self = CData::NewLC(aFile, aUniqueId);

	CleanupStack::Pop(self);

	return self;

	}

EXPORT_C CData* CData::NewLC(RFile& aFile, const TDesC& aUniqueId)

	{

	CData *self = new (ELeave) CData;

	CleanupStack::PushL(self);

	self->ConstructL(aFile, aUniqueId);

	return self;

	}

CData* CData::NewLC(TUid aUid,

					const TVirtualPathPtr& aVirtualPath,

					TIntent aIntent,

					TContentShareMode aShareMode)

	{

	CData* self = new(ELeave) CData();

	CleanupStack::PushL(self);

	self->ConstructL(aUid, aVirtualPath, aIntent, aShareMode);

	return self;

	}

CData* CData::NewLC(TUid aUid, RFile& aFile, const TDesC& aUniqueId, TIntent aIntent)

	{

	CData* self = new (ELeave) CData();

	CleanupStack::PushL(self);

	self->ConstructL(aUid, aFile, aUniqueId, aIntent);

	return self;

	}

CData::CData()

	{ 

	}

CData::~CData() 

	{ 

	// Destroy the agent implementation

	delete iAgentData;

	// close ECOM session, may result in the unloading of the DLL

	delete iAgentFactory;

	REComSession::FinalClose();

	}

void CData::ConstructL(const TVirtualPathPtr& aVirtualPath, TIntent aIntent, TContentShareMode aShareMode)

	{

	// Create the agent resolver which will contains a reference to

	// the agent responsible for this piece of content

	CAgentResolver* resolver = CAgentResolver::NewLC(EFalse);

	// Create a temporary buffer used to store the translated version of the URI

	HBufC* actualUri = HBufC::NewLC(aVirtualPath.URI().Length() + KMaxSIDLength);

	TPtr uri = actualUri->Des();

	// Find the agent who handles the file and translate the URI if it is pointing to a private directory 

	CAgentInfo& agentInfo = resolver->ResolveFileL(aVirtualPath.URI(), uri, aShareMode);

	// Figure out the Uid of the agent

	TUid agentUid = agentInfo.Agent().ImplementationUid();

	// call internal CData::NewL()

	CData::ConstructL(agentUid, TVirtualPathPtr(*actualUri, aVirtualPath.UniqueId()), aIntent, aShareMode);

	CleanupStack::PopAndDestroy(2, resolver); // actualUri, resolver

	}

void CData::ConstructL(const TVirtualPathPtr& aVirtualPath, TContentShareMode aShareMode)

	{

	// Create the agent resolver which will contains a reference to

	// the agent responsible for this piece of content

	CAgentResolver* resolver = CAgentResolver::NewLC(EFalse);

	// Create a temporary buffer used to store the translated version of the URI

	HBufC* actualUri = HBufC::NewLC(aVirtualPath.URI().Length() + KMaxSIDLength);

	TPtr uri = actualUri->Des();

	// Find the agent who handles the file and translate the URI if it is pointing to a private directory 

	CAgentInfo& agentInfo = resolver->ResolveFileL(aVirtualPath.URI(), uri, aShareMode);

	// Figure out the Uid of the agent

	TUid agentUid = agentInfo.Agent().ImplementationUid();

	// call internal CData::NewL()

	CData::ConstructL(agentUid, TVirtualPathPtr(*actualUri, aVirtualPath.UniqueId()), aShareMode);

	CleanupStack::PopAndDestroy(2, resolver); // actualUri, resolver

	}

void CData::ConstructL(RFile& aFile, const TDesC& aUniqueId, TIntent aIntent)

	{

	// Find the agent who handles the file

	CAgentResolver* resolver = CAgentResolver::NewLC(EFalse);

	CAgentInfo& agentInfo = resolver->ResolveFileL(aFile);

	// Figure out the Uid of the agent

	TUid agentUid = agentInfo.Agent().ImplementationUid();

	// call other constructL now that we have the Uid

	CData::ConstructL(agentUid, aFile, aUniqueId, aIntent);

	// Cleanup resolver after creating CData to unnecessary 

	// unloading and loading of agent plug-ins

	CleanupStack::PopAndDestroy(resolver); 

	}

void CData::ConstructL(RFile& aFile, const TDesC& aUniqueId)

	{

	// Find the agent who handles the file

	CAgentResolver* resolver = CAgentResolver::NewLC(EFalse);

	CAgentInfo& agentInfo = resolver->ResolveFileL(aFile);

	// Figure out the Uid of the agent

	TUid agentUid = agentInfo.Agent().ImplementationUid();

	// call other constructL now that we have the Uid

	CData::ConstructL(agentUid, aFile, aUniqueId);

	// Cleanup resolver after creating CData to unnecessary 

	// unloading and loading of agent plug-ins

	CleanupStack::PopAndDestroy(resolver); 

	}

void CData::ConstructL(TUid aUid,

					   const TVirtualPathPtr& aVirtualPath,

					   TIntent aIntent,

					   TContentShareMode aShareMode)

	{

	CData::ConstructL(aUid, aVirtualPath, aShareMode);

	// Ensure that client's intent is possible

	User::LeaveIfError(iAgentData->EvaluateIntent(aIntent));

	}

void CData::ConstructL(TUid aUid,

					   const TVirtualPathPtr& aVirtualPath,

					   TContentShareMode aShareMode)

	{

	iAgentUid = aUid;

	// create our own agent factory (de-facto session handle for ECOM)

	iAgentFactory = CAgentFactory::NewL(iAgentUid);

	// Create an instance of the Agent's CAgentData

	iAgentData = iAgentFactory->CreateDataConsumerL(aVirtualPath, aShareMode);

	}

void CData::ConstructL(TUid aUid, RFile& aFile, const TDesC& aUniqueId, TIntent aIntent)

	{

	CData::ConstructL(aUid, aFile, aUniqueId);

	// Ensure that client's intent is possible

	User::LeaveIfError(iAgentData->EvaluateIntent(aIntent));

	}

void CData::ConstructL(TUid aUid, RFile& aFile, const TDesC& aUniqueId)

	{

	iAgentUid = aUid;

	// create our own agent factory (de-facto session handle for ECOM)

	iAgentFactory = CAgentFactory::NewL(iAgentUid);

	// Create an instance of the agent's CAgentData

	// The agent must make a duplicate of the file handle

	iAgentData = iAgentFactory->CreateDataConsumerL(aFile, aUniqueId);

	}

EXPORT_C void CData::DataSizeL(TInt& aSize)

	{

	// ask the agent for the data size of the current content object

	iAgentData->DataSizeL(aSize);

	}

#ifdef SYMBIAN_ENABLE_64_BIT_FILE_SERVER_API

EXPORT_C void CData::DataSize64L(TInt64& aSize)

	{

	// ask the agent for the data size of the current content object

	TRAPD(err, iAgentData->DataSize64L(aSize));

	if(err == KErrCANotSupported)

		{

		//fallback to 32bit API

		TInt size32;

		iAgentData->DataSizeL(size32);

		aSize = size32;

		}

	else

		User::LeaveIfError(err);

	}

#endif // SYMBIAN_ENABLE_64_BIT_FILE_SERVER_API

EXPORT_C TInt CData::EvaluateIntent(TIntent aIntent)

	{

	// ask the agent to re-evaluate the intent on the current content object

	return iAgentData->EvaluateIntent(aIntent);

	}

EXPORT_C TInt CData::ExecuteIntent(TIntent aIntent)

	{

	// ask the agent to re-evaluate the intent on the current content object

	return iAgentData->ExecuteIntent(aIntent);

	}

EXPORT_C TInt CData::Read(TDes8& aDes) const

	{

	// ask the agent to read plaintext from the content object 

	return iAgentData->Read(aDes);

	}

EXPORT_C TInt CData::Read(TDes8& aDes, TInt aLength) const

	{

	// ask the agent to read plaintext from the content object 

	return iAgentData->Read(aDes, aLength);

	}

EXPORT_C void CData::Read(TDes8& aDes, 

						  TRequestStatus& aStatus) const

	{

	// ask the agent to read plaintext from the content object 

	iAgentData->Read(aDes, aStatus);

	}

EXPORT_C void CData::Read(TDes8& aDes, 

						  TInt aLength, 

						  TRequestStatus& aStatus) const

	{

	// ask the agent to read plaintext from the content object 

	iAgentData->Read(aDes, aLength, aStatus);

	}

EXPORT_C void CData::ReadCancel(TRequestStatus &aStatus) const

	{

	iAgentData->ReadCancel(aStatus);

	}

#ifdef SYMBIAN_ENABLE_64_BIT_FILE_SERVER_API

	EXPORT_C TInt CData::Read_Unused(TInt aPos, TDes8& aDes, 

								TInt aLength, TRequestStatus& aStatus) const

#else

	EXPORT_C TInt CData::Read(TInt aPos, TDes8& aDes, 

								TInt aLength, TRequestStatus& aStatus) const

#endif

	{

	// ask the agent to read plaintext from the content object 

	if(aPos<0)

		return KErrArgument;

	return iAgentData->Read(aPos, aDes, aLength, aStatus);

	}

#ifdef SYMBIAN_ENABLE_64_BIT_FILE_SERVER_API

EXPORT_C TInt CData::Read(TInt64 aPos, TDes8& aDes,

						  TInt aLength, TRequestStatus& aStatus) const

	{

	// If agent does not support 64bit Read, a fallback to 32bit Read is provided automatically

	// The above API method signature allows error codes to be returned

	// via two different routes (return code & aStatus). Should the async request 

	// dispatch fail then an error code is returned immediately via the 

	// aStatus parameter rather than via the return code of the function.	

	// NOTE: it is not generally not recommended for functions to be able to return

	// error codes in two different ways as this places a bigger error-checking

	// burden on clients.

	if(aPos<0)

		return KErrArgument;

	TInt rval = iAgentData->Read64(aPos, aDes, aLength, aStatus);

	return (rval == KErrCANotSupported? iAgentData->Read((TInt)aPos, aDes, aLength, aStatus) : rval );

	}

#endif // SYMBIAN_ENABLE_64_BIT_FILE_SERVER_API

EXPORT_C TInt CData::Seek(TSeek aMode,TInt& aPos) const

	{

	// ask the agent to seek witin the plaintext 

	return iAgentData->Seek(aMode, aPos);

	}

#ifdef SYMBIAN_ENABLE_64_BIT_FILE_SERVER_API

EXPORT_C TInt CData::Seek64(TSeek aMode,TInt64& aPos) const

	{

	// ask the agent to seek witin the plaintext 

	TInt rval64 = iAgentData->Seek64(aMode, aPos);

	if(rval64 == KErrCANotSupported)

		{

		//fallback to 32bit API

		TInt pos32 = I64INT(aPos);

		TInt rval32 = iAgentData->Seek(aMode, pos32);

		aPos = pos32;

		return rval32;

		}

	return rval64;

	}

#endif // SYMBIAN_ENABLE_64_BIT_FILE_SERVER_API

EXPORT_C TInt CData::SetProperty(TAgentProperty aProperty, TInt aValue)

	{

	// Set a property within the agent

	return iAgentData->SetProperty(aProperty, aValue);

	}

EXPORT_C TInt CData::GetAttribute(TInt aAttribute, TInt& aValue) const

	{

	// Get an attribute related to this content object

	return iAgentData->GetAttribute(aAttribute, aValue);

	}

EXPORT_C TInt CData::GetAttributeSet(RAttributeSet& aAttributeSet) const

	{

	// Get a set of attributes related to this content object

	return iAgentData->GetAttributeSet(aAttributeSet);

	}

EXPORT_C TInt CData::GetStringAttribute(TInt aAttribute, TDes& aValue) const