1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/os/ossrv/genericservices/mimerecognitionfw/apmime/APMFNDR.CPP Fri Jun 15 03:10:57 2012 +0200
1.3 @@ -0,0 +1,427 @@
1.4 +// Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies).
1.5 +// All rights reserved.
1.6 +// This component and the accompanying materials are made available
1.7 +// under the terms of "Eclipse Public License v1.0"
1.8 +// which accompanies this distribution, and is available
1.9 +// at the URL "http://www.eclipse.org/legal/epl-v10.html".
1.10 +//
1.11 +// Initial Contributors:
1.12 +// Nokia Corporation - initial contribution.
1.13 +//
1.14 +// Contributors:
1.15 +//
1.16 +// Description:
1.17 +// concrete file finders for MIME type recognizers
1.18 +//
1.19 +//
1.20 +
1.21 +#include "APMFNDR.H"
1.22 +
1.23 +#include <e32uid.h>
1.24 +#include "APMPAN.H"
1.25 +
1.26 +#ifdef USING_ECOM_RECOGS
1.27 +#include <ecom/ecom.h>
1.28 +#endif
1.29 +
1.30 +const TInt KRecognizerDllGranularity=2;
1.31 +
1.32 +#ifdef USING_ECOM_RECOGS
1.33 +const TUid KUidDataRecogInterFaceUid = {0x101F7D87};
1.34 +#endif
1.35 +
1.36 +//
1.37 +// class TRecognizer
1.38 +//
1.39 +
1.40 +CApaScanningDataRecognizer::TRecognizer::TRecognizer(HBufC* aName)
1.41 + {
1.42 + iName=aName;
1.43 + }
1.44 +
1.45 +//
1.46 +// class CApaRecognizerDll
1.47 +//
1.48 +
1.49 +CApaRecognizerDll::~CApaRecognizerDll()
1.50 + {
1.51 + delete iId.iName;
1.52 + iLibrary.Close();
1.53 + delete iNext;
1.54 + }
1.55 +
1.56 +CApaRecognizerDll::CApaRecognizerDll(HBufC* aName)
1.57 + : iId(aName)
1.58 + {
1.59 + }
1.60 +
1.61 +#ifdef USING_ECOM_RECOGS
1.62 +// Used for cleanup support of locally declared arrays
1.63 +void CleanUpEComInfoArray(TAny* aInfoArray)
1.64 + {
1.65 + RImplInfoPtrArray* infoArray = (static_cast<RImplInfoPtrArray*>(aInfoArray));
1.66 + infoArray->ResetAndDestroy();
1.67 + infoArray->Close();
1.68 + }
1.69 +#endif
1.70 +
1.71 +// class CApaBackupOperationObserver
1.72 +CApaScanningDataRecognizer::CApaBackupOperationObserver::CApaBackupOperationObserver(CApaScanningDataRecognizer& aRecognizer)
1.73 + : iRecognizer(aRecognizer)
1.74 + {
1.75 + TRAP_IGNORE(iSession = CBaBackupSessionWrapper::NewL());
1.76 + }
1.77 +
1.78 +CApaScanningDataRecognizer::CApaBackupOperationObserver::~CApaBackupOperationObserver()
1.79 + {
1.80 + if( iSession )
1.81 + {
1.82 + iSession->DeRegisterBackupOperationObserver(*this);
1.83 + delete iSession;
1.84 + }
1.85 + }
1.86 +
1.87 +void CApaScanningDataRecognizer::CApaBackupOperationObserver::RegisterObserverL()
1.88 + {
1.89 + if(iSession)
1.90 + {
1.91 + iSession->RegisterBackupOperationObserverL(*this);
1.92 + }
1.93 + }
1.94 +
1.95 +void CApaScanningDataRecognizer::CApaBackupOperationObserver::HandleBackupOperationEventL(const TBackupOperationAttributes& aBackupOperationAttributes)
1.96 + {
1.97 + if (!iRecognizer.iExtra->iRecognizersLoaded)
1.98 + {
1.99 + // Then the recognizers have been unloaded, so there's nothing to do
1.100 + return;
1.101 + }
1.102 +
1.103 + if ((aBackupOperationAttributes.iFileFlag == MBackupObserver::EReleaseLockReadOnly ||
1.104 + aBackupOperationAttributes.iFileFlag == MBackupObserver::EReleaseLockNoAccess)
1.105 + && aBackupOperationAttributes.iOperation == EStart)
1.106 + {
1.107 + // release recognisers not in rom
1.108 + TInt count = iRecognizer.RecognizerCount();
1.109 + for (TInt i=count-1; i>=0; i--)
1.110 + {
1.111 + CApaRecognizerDll* lib=iRecognizer.iRecognizerLib[i];
1.112 + TDriveUnit drive(lib->iId.iDrive);
1.113 + TChar driveName=drive.Name()[0];
1.114 + if(driveName != TChar('Z'))
1.115 + {
1.116 + iRecognizer.RemoveRecognizer(lib); // ignore any errors
1.117 + }
1.118 + }
1.119 + }
1.120 +
1.121 + if (aBackupOperationAttributes.iFileFlag == MBackupObserver::ETakeLock &&
1.122 + (aBackupOperationAttributes.iOperation == EEnd ||
1.123 + aBackupOperationAttributes.iOperation == EAbort))
1.124 + {
1.125 + iRecognizer.ScanForRecognizersL();
1.126 + }
1.127 + }
1.128 +
1.129 +TInt CApaScanningDataRecognizer::CApaBackupOperationObserver::UpdateCounter() const
1.130 + {
1.131 + return iUpdateCounter;
1.132 + }
1.133 +
1.134 +void CApaScanningDataRecognizer::CApaBackupOperationObserver::SetUpdateCounter(TInt aValue)
1.135 + {
1.136 + iUpdateCounter = aValue;
1.137 + }
1.138 +
1.139 +
1.140 +//
1.141 +// class CApaScanningDataRecognizer
1.142 +//
1.143 +
1.144 +EXPORT_C CApaScanningDataRecognizer* CApaScanningDataRecognizer::NewL(RFs& aFs)
1.145 + {
1.146 + return NewL(aFs,ETrue);
1.147 + }
1.148 +
1.149 +/**
1.150 +@internalTechnology
1.151 +*/
1.152 +EXPORT_C CApaScanningDataRecognizer* CApaScanningDataRecognizer::NewL(RFs& aFs, TBool aLoadDataRecognizers)
1.153 + {
1.154 + CApaScanningDataRecognizer* self=new(ELeave) CApaScanningDataRecognizer(aFs);
1.155 + CleanupStack::PushL(self);
1.156 + self->ConstructL(aLoadDataRecognizers);
1.157 + CleanupStack::Pop(); // self
1.158 + return self;
1.159 + }
1.160 +
1.161 +EXPORT_C CApaScanningDataRecognizer::~CApaScanningDataRecognizer()
1.162 + {
1.163 + UnloadRecognizers();
1.164 + delete iExtra->iObserver;
1.165 + delete iExtra;
1.166 + }
1.167 +
1.168 +EXPORT_C void CApaScanningDataRecognizer::ScanForRecognizersL()
1.169 + {
1.170 + // set all recognizers to not present - pending rediscovery
1.171 + TInt count=iRecognizerLib.Count();
1.172 + TInt i;
1.173 + for (i=0; i<count; i++)
1.174 + iRecognizerLib[i]->iPresent=CApaRecognizerDll::ENotPresent;
1.175 +
1.176 + ScanForEcomRecognizersL();
1.177 + //
1.178 + // remove any recognizers that are no longer present
1.179 + for (TInt ii=iRecognizerLib.Count()-1;ii>=0;ii--)
1.180 + {
1.181 + CApaRecognizerDll* lib=iRecognizerLib[ii];
1.182 + if (lib->iPresent==CApaRecognizerDll::ENotPresent)
1.183 + {
1.184 + RemoveRecognizer(lib); // ignore any errors
1.185 + }
1.186 + }
1.187 + iMaxBufferSize = -1; // Recognizers were re-loaded so need to recalculate the maximum buffer size
1.188 + }
1.189 +
1.190 +EXPORT_C TInt CApaScanningDataRecognizer::RecognizerCount()
1.191 + {
1.192 + return iRecognizerLib.Count();
1.193 + }
1.194 +
1.195 +EXPORT_C CApaScanningDataRecognizer::CRecognizerArray* CApaScanningDataRecognizer::RecognizerListLC()const
1.196 + {
1.197 + CRecognizerArray* list=new(ELeave) CArrayFixFlat<TRecognizer>(2);
1.198 + CleanupStack::PushL(list);
1.199 + TInt count=iRecognizerLib.Count();
1.200 + for (TInt i=0; i<count; i++)
1.201 + list->AppendL(iRecognizerLib[i]->iId);
1.202 + return list;
1.203 + }
1.204 +
1.205 +EXPORT_C const CApaScanningDataRecognizer::TRecognizer& CApaScanningDataRecognizer::operator[](TInt aIndex)const
1.206 + {
1.207 + return iRecognizerLib[aIndex]->iId;
1.208 + }
1.209 +
1.210 +EXPORT_C TInt CApaScanningDataRecognizer::UpdateCounter()const
1.211 + {
1.212 + return iExtra->iObserver->UpdateCounter();
1.213 + }
1.214 +
1.215 +
1.216 +EXPORT_C CApaScanningDataRecognizer::CApaScanningDataRecognizer(RFs& aFs)
1.217 + :CApaDataRecognizer(aFs),
1.218 + iRecognizerLib(KRecognizerDllGranularity)
1.219 + {
1.220 + __DECLARE_NAME(_S("CApaScanningDataRecognizer"));
1.221 + }
1.222 +
1.223 +EXPORT_C void CApaScanningDataRecognizer::ConstructL()
1.224 + {
1.225 + ConstructL(ETrue);
1.226 + }
1.227 +
1.228 +void CApaScanningDataRecognizer::ConstructL(TBool aLoadDataRecognizers)
1.229 + {
1.230 + iExtra = new (ELeave) CApaScanningDataRecognizerExtra();
1.231 + iExtra->iObserver = new (ELeave) CApaBackupOperationObserver( *this );
1.232 + iExtra->iObserver->RegisterObserverL();
1.233 + if(aLoadDataRecognizers)
1.234 + {
1.235 + LoadRecognizersL();
1.236 + }
1.237 + }
1.238 +
1.239 +EXPORT_C void CApaScanningDataRecognizer::SetEcomRecognizersFromListL(const CRecognizerArray& aList)
1.240 + {
1.241 + //for ecom style
1.242 + for (TInt i=0 ; i<aList.Count() ; i++)
1.243 + {
1.244 + TDriveUnit drive(aList[i].iDrive);
1.245 + TRAPD(ret, LoadEcomRecognizerL(drive,aList[i].iUid));
1.246 + if (ret==KErrNoMemory)
1.247 + {
1.248 + User::Leave(ret);
1.249 + }
1.250 + }
1.251 + }
1.252 +
1.253 +EXPORT_C void CApaScanningDataRecognizer::SetEcomRecognizerL(const TRecognizer& aRecognizer)
1.254 + {
1.255 + //for ecom style
1.256 + TDriveUnit drive(aRecognizer.iDrive);
1.257 + LoadEcomRecognizerL(drive,aRecognizer.iUid);
1.258 + }
1.259 +
1.260 +TInt CApaScanningDataRecognizer::RemoveRecognizer(CApaRecognizerDll* aDll)
1.261 + {
1.262 + __ASSERT_DEBUG(iRecognizerLib.Count()>0,User::Invariant());
1.263 + // try to remove the recognizer from the list
1.264 + TInt ret=RemoveDataRecognizerType(aDll->iRec);
1.265 + if (ret!=KErrNone && ret!=KErrNotFound)
1.266 + return ret;
1.267 + //
1.268 + // get a handle to the previous entry in the list
1.269 + TInt count=iRecognizerLib.Count();
1.270 + TInt i;
1.271 + for (i=0; i<count; i++)
1.272 + {
1.273 + if (iRecognizerLib[i]==aDll)
1.274 + break;
1.275 + }
1.276 + __ASSERT_ALWAYS(i<count,Panic(EPanicLibraryNotInList));
1.277 +
1.278 + // remove the dll
1.279 + delete iRecognizerLib[i];
1.280 + iRecognizerLib.Remove(i);
1.281 + iRecognizerLib.Compress();
1.282 + if(iExtra->iObserver)
1.283 + iExtra->iObserver->SetUpdateCounter(iExtra->iObserver->UpdateCounter() +1);
1.284 + return KErrNone;
1.285 + }
1.286 +
1.287 +#ifdef USING_ECOM_RECOGS
1.288 +
1.289 +//load the ecom style data recognizer
1.290 +void CApaScanningDataRecognizer::LoadEcomRecognizerL(TDriveUnit& aDrive,TUid aUid)
1.291 + {
1.292 + //Get implementation information of the recognizer with UID aUid
1.293 + RImplInfoPtrArray implementationInfoArray;
1.294 + TCleanupItem cleanup(CleanUpEComInfoArray, &implementationInfoArray);
1.295 + CleanupStack::PushL(cleanup);
1.296 + REComSession::ListImplementationsL(KUidDataRecogInterFaceUid,implementationInfoArray);
1.297 + const TInt availCount = implementationInfoArray.Count();
1.298 + CImplementationInformation* info=NULL;
1.299 + TInt ii;
1.300 + for (ii=0;ii<availCount;++ii)
1.301 + {
1.302 + info = implementationInfoArray[ii];
1.303 + TUid uid = info->ImplementationUid();
1.304 +
1.305 + if(uid.iUid == aUid.iUid )
1.306 + {
1.307 + break;
1.308 + }
1.309 + }
1.310 +
1.311 + //If the implementation not found just return
1.312 + if(ii==availCount)
1.313 + {
1.314 + CleanupStack::PopAndDestroy(&implementationInfoArray);
1.315 + return;
1.316 + }
1.317 +
1.318 + //Get the version of implementation
1.319 + TInt version=info->Version();
1.320 +
1.321 + // check we haven't loaded this one already
1.322 + TInt count=iRecognizerLib.Count();
1.323 + TInt i;
1.324 + CApaRecognizerDll* lib=NULL; // the previous one in the list
1.325 + for (i=0; i<count; i++)
1.326 + {
1.327 + lib=iRecognizerLib[i];
1.328 + if (lib->iId.iUid==aUid)
1.329 + {// we may have to override one
1.330 + if (lib->iPresent!=CApaRecognizerDll::ENotPresent)
1.331 + {
1.332 + CleanupStack::PopAndDestroy(&implementationInfoArray);
1.333 + return; // already found
1.334 + }
1.335 + else
1.336 + {
1.337 + if (lib->iVersion < version)
1.338 + {
1.339 + //Upgrade a plugin if a plugin with higher version than loaded plugin is installed.
1.340 + lib->iPresent = CApaRecognizerDll::ESuperseded;
1.341 + break;
1.342 + }
1.343 + else
1.344 + {
1.345 + CleanupStack::PopAndDestroy(&implementationInfoArray);
1.346 + lib->iPresent = CApaRecognizerDll::EIsPresent;
1.347 + return;
1.348 + }
1.349 + }
1.350 + }
1.351 + }
1.352 + //Remove the old version and let it continue to load new version
1.353 + if ((i<count)&&(lib->iPresent==CApaRecognizerDll::ESuperseded))
1.354 + {
1.355 + RemoveRecognizer(lib);
1.356 + }
1.357 +
1.358 + // load the library
1.359 + HBufC* recogName=info->DisplayName().AllocL();
1.360 + CleanupStack::PushL(recogName);
1.361 + lib=NULL;
1.362 + lib = new(ELeave) CApaRecognizerDll(recogName);
1.363 + CleanupStack::Pop(recogName);
1.364 + CleanupStack::PushL(lib);
1.365 + TRAPD(error,lib->iRec = CApaDataRecognizerType::CreateDataRecognizerL(aUid));
1.366 + if(!error && lib->iRec)
1.367 + {
1.368 + lib->iPresent = CApaRecognizerDll::EIsPresent;
1.369 + AddDataRecognizerTypeL(lib->iRec);
1.370 + lib->iId.iUid = aUid;
1.371 + lib->iId.iDrive = aDrive;
1.372 + lib->iVersion=version;
1.373 + iExtra->iObserver->SetUpdateCounter(iExtra->iObserver->UpdateCounter() + 1);
1.374 + //
1.375 + // add lib to the library list
1.376 + iRecognizerLib.AppendL(lib);
1.377 + CleanupStack::Pop(lib); // lib
1.378 + }
1.379 + else
1.380 + {
1.381 + CleanupStack::PopAndDestroy(lib); // lib
1.382 + }
1.383 + CleanupStack::PopAndDestroy(&implementationInfoArray);
1.384 + }
1.385 +#else
1.386 +void CApaScanningDataRecognizer::LoadEcomRecognizerL(TDriveUnit&,TUid)
1.387 + {
1.388 + }
1.389 +#endif
1.390 +
1.391 +void CApaScanningDataRecognizer::ScanForEcomRecognizersL()
1.392 + {
1.393 +#ifdef USING_ECOM_RECOGS
1.394 + //scan ecom plugin
1.395 + RImplInfoPtrArray implementationArray;
1.396 + TCleanupItem cleanup(CleanUpEComInfoArray, &implementationArray);
1.397 + CleanupStack::PushL(cleanup);
1.398 + REComSession::ListImplementationsL(KUidDataRecogInterFaceUid,implementationArray);
1.399 + const TInt availCount = implementationArray.Count();
1.400 + for (TInt count=0;count<availCount;++count)
1.401 + {
1.402 + const CImplementationInformation* info = implementationArray[count];
1.403 + TUid uid = info->ImplementationUid();
1.404 + TDriveUnit drive=info-> Drive();
1.405 + TRAP_IGNORE(LoadEcomRecognizerL(drive,uid));
1.406 + }
1.407 + CleanupStack::PopAndDestroy(&implementationArray);
1.408 +#endif
1.409 + }
1.410 +
1.411 +/**
1.412 +@internalTechnology
1.413 +*/
1.414 +EXPORT_C void CApaScanningDataRecognizer::LoadRecognizersL()
1.415 + {
1.416 + iExtra->iRecognizersLoaded = ETrue;
1.417 + ScanForRecognizersL();
1.418 + UpdateDataTypesL();
1.419 + }
1.420 +
1.421 +/**
1.422 +@internalTechnology
1.423 +*/
1.424 +EXPORT_C void CApaScanningDataRecognizer::UnloadRecognizers()
1.425 + {
1.426 + iExtra->iRecognizersLoaded = EFalse;
1.427 + DestroyRecognizerList();
1.428 + iRecognizerLib.ResetAndDestroy();
1.429 + }
1.430 +