commonuisupport/uikon/coresrc/EIKPROC.CPP
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// Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies).
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// All rights reserved.
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// This component and the accompanying materials are made available
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// under the terms of "Eclipse Public License v1.0"
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// which accompanies this distribution, and is available
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// at the URL "http://www.eclipse.org/legal/epl-v10.html".
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//
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// Initial Contributors:
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// Nokia Corporation - initial contribution.
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//
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// Contributors:
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//
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// Description:
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//
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#include <eikproc.h>
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#include <eikdoc.h>
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#include <s32file.h>
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#include <basched.h>
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#include <eikpanic.h>
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#include <apacmdln.h>
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#include <apparc.h>
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#include "APFDEF.H"
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#include <eikenv.h>
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/**
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Static two phase construction 
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@param aFs File server session
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@param aProcessId May be KNullProcessId @see CApaProcess::ConstructL
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@return Instantiated and constructed process object.
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*/
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CEikProcess* CEikProcess::NewL(const RFs& aFs, TProcessId aProcessId)
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	{ // static
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	CEikProcess* self=new(ELeave) CEikProcess(aFs);
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	CleanupStack::PushL(self);
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	if(KNullProcessId==aProcessId)
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		{
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		self->ConstructL();
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		}
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	else
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		{
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		self->ConstructL(aProcessId);
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		}
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	CleanupStack::Pop(self);
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	return self;
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	}
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/**
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Constructor
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@param aFs File server session
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@internalComponent
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*/
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CEikProcess::CEikProcess(const RFs& aFs)
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	: CApaProcess(aFs)
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	{}
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EXPORT_C CEikProcess::~CEikProcess()
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/** Destructor.
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Destroys the main document. */
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	{
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	DestroyDocument(MainDocument()); // pre-empt this call at superclass level
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	delete(iMainStore); // delete this only after document has been deleted
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	}
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/**
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Returns the command tail end - i.e. command line parameters
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@return CommandTailEnd.
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*/
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EXPORT_C TPtrC CEikProcess::CommandTailEnd() const
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	{
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	return iCommandTailEnd;
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	}
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EXPORT_C TFileName CEikProcess::MainDocFolder() const
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/** Returns the drive and path of the main document. 
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@return The drive and path of the main document. This excludes the filename. */
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	{
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	TParse parse;
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	parse.Set(MainDocFileName(),NULL,NULL);
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	return(parse.DriveAndPath());
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	}
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EXPORT_C void CEikProcess::SetMainStore(CFileStore* aMainStore)
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/** Sets the file store that stores the main document. 
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A main store must have been set before you can call SaveToDirectFileStoreL().
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@param aMainStore The file store object which is used to store the main document. */
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	{
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	iMainStore=aMainStore;
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	}
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struct STemp
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	{
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	RFs* iFs;
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	TParse iFile;
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	};
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/**
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@internalComponent
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*/
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LOCAL_C void DeleteTemp(TAny* aPtr)
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	{
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	STemp& temp=*(STemp*)aPtr;
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	temp.iFs->Delete(temp.iFile.FullName());
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	}
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EXPORT_C void CEikProcess::SaveToDirectFileStoreL(CEikDocument* aDoc,const TFileName* aNewFileName,TBool aReopen,TFileName* aTempFile)
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/** Saves the main document optionally to a new file, and optionally opens it.
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   116
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@param aDoc The main document.
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@param aNewFileName The optional new filename for the main document. 
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This file should not already exist. If specified, a new file with 
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this name is created, and the main document is saved to it; aTempFile 
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is not used. If NULL, the main document is saved to a temporary file, 
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whose name is returned in aTempFile. 
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@param aReopen If true, the main document file is set to the contents of 
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any temporary file created, if applicable, and the newly created main document 
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file is opened for writing. If false, the temporary file (if created) or the 
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main document file remains closed.
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@param aTempFile If not NULL, on return, this holds the path and filename of 
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the temporary file created and into which the document was saved.
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@panic EIKON 44 The main store has not been allocated.
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@panic EIKON 45 The main store is not a direct file store (its first UID is not 
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KDirectFileStoreLayoutUid). */
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	{
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	__ASSERT_ALWAYS( iMainStore ,Panic(EEikPanicProcessNoStore));
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	__ASSERT_ALWAYS( iMainStore->Type()[0]==KDirectFileStoreLayoutUid ,Panic(EEikPanicProcessWrongStoreType));
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	//
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	RFs& fsSession=FsSession();
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	STemp temp;					// for temporary file name and cleanup-deletion
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	CDirectFileStore* store=NULL;
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	if (aNewFileName)
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		{
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		// save to the new filename supplied, and open this new file as iMainDoc
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		store = CDirectFileStore::CreateLC(fsSession,*aNewFileName,EFileWrite);
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		}
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	else
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		{// overwrite iMainDocFileName, but save to a temporary first
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		// make sure the temp directory is on the same drive as the file and that it exists
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		TPtrC tempFile;
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		if(aTempFile && aTempFile->Length())
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			{
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			tempFile.Set(*aTempFile);
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			}
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		else
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			{
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			tempFile.Set(MainDocFileName());
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			}
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		TParsePtrC ptr(tempFile);
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		TPtrC drive=ptr.Drive();
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		TFileName tempName;
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		_LIT(KFormat,"\\private\\%08x\\");
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		tempName.Format(KFormat,RThread().SecureId().iId);
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		User::LeaveIfError(temp.iFile.Set(drive,&tempName,NULL) ); // abuse temp.iFile
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		fsSession.MkDirAll(temp.iFile.DriveAndPath());
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		// create temp file
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		tempName.Zero();
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		RFile file;
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		User::LeaveIfError(file.Temp(fsSession,temp.iFile.DriveAndPath(),tempName,EFileWrite));
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		temp.iFs=&fsSession;
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		temp.iFile.Set(tempName,NULL,NULL);		// set for deletion if it goes wrong now
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		CleanupStack::PushL(TCleanupItem(DeleteTemp,&temp));
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		store = CDirectFileStore::NewLC(file);
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		if (aTempFile)
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			{
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			*aTempFile=temp.iFile.FullName();
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			}
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		}
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	store->SetTypeL(iMainStore->Type());
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	// store main in temp
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	CStreamDictionary* streamDic=CStreamDictionary::NewL();
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	CleanupStack::PushL(streamDic);
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	MainDocument()->StoreL(*store,*streamDic);
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	// write root stream
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	WriteRootStreamL(*store,*streamDic,*aDoc->Application());
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	CleanupStack::PopAndDestroy(streamDic);
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	// close the new store
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	store->CommitL();
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	CleanupStack::PopAndDestroy(store);
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   187
	if (aNewFileName==NULL)
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		{
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		CleanupStack::Pop(&temp); // temporary file deleter
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		}
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   191
	if (aReopen)
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		{
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		// close the old store
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		delete iMainStore;
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		iMainStore=NULL;
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		TRAPD(err,OpenNewFileL(aNewFileName,temp.iFile));
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		if (err!=KErrNone)
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   198
			{
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			if (iMainStore!=NULL)
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				{
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   201
				User::Leave(err);
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   202
				}
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			CBaActiveScheduler::Exit();
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			}
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		}
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	}
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   207
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   208
EXPORT_C void CEikProcess::SaveToDirectFileStoreL(CEikDocument* aDoc,const TFileName* aNewFileName)
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/** Saves the main document optionally to a new file.
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   210
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If aNewFileName is specified, a new file with that name is created, and the 
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main document is saved to it. This file is opened for writing.
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   213
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If aNewFileName is NULL, the main document is saved and is opened for writing.
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   215
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@param aDoc The main document.
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@param aNewFileName The optional new filename for the main document. This file 
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should not already exist.
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@panic EIKON 44 The main store has not been allocated.
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@panic EIKON 45 The main store is not a direct file store (its first UID is not 
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KDirectFileStoreLayoutUid). */
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   222
	{
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	SaveToDirectFileStoreL(aDoc,aNewFileName,ETrue);
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   224
	}
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/**
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Opens file.  Updates MainDocFileName, opens file as direct file store.
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@param aNewFileName May be null
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@param aNewFilePath Used if aNewFileName is null.
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@internalComponent
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@see CApaProcess::MainDocFileName()
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*/
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void CEikProcess::OpenNewFileL(const TFileName* aNewFileName,const TParse& aNewFilePath)
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	{
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	if (!aNewFileName)
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		{
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		RFs& fsSession=FsSession();
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		const TInt err=fsSession.Replace(aNewFilePath.FullName(),MainDocFileName());
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		iMainStore=CDirectFileStore::OpenL(fsSession,MainDocFileName(),EFileShareExclusive);
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		User::LeaveIfError(err);
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		}
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	else
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		{
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		SetMainDocFileName(*aNewFileName);
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		// open new file
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		iMainStore=CDirectFileStore::OpenL(FsSession(),MainDocFileName(),EFileShareExclusive);
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		}
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	}
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EXPORT_C CFileStore* CEikProcess::MainStore() const
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/** Gets a pointer to the main store. This is the file store that 
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holds the main document.
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@return The main store, or NULL if it has not been set. */
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	{
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	return iMainStore;
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	}
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EXPORT_C void CEikProcess::AppFromDocL(TDes& aLibraryName,const TDesC& aDocumentName) const
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/** Gets the name of the application DLL associated with the specified document. 
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@param aLibraryName On return, holds the path and filename of the application DLL.
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@param aDocumentName The path and filename of the document file.
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@leave KErrCorrupt The document file is not valid (its UID2 must be KUidAppDllDoc). */
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	{
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	CFileStore* docStore;
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	CStreamDictionary* streamDic=CApaProcess::ReadRootStreamLC(FsSession(),docStore,aDocumentName,EFileRead);
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	CleanupStack::PushL(docStore);
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	GetLibraryNameL(aLibraryName,*docStore,*streamDic);
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	CleanupStack::PopAndDestroy(2); // streamDic and docStore
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	}
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/**
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@param aLibraryName Ouput parameter, contains full application name on return
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@param aDocStore File store containing the library
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@param aStreamDic Stream dictionary within file store.
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@internalComponent
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*/
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void CEikProcess::GetLibraryNameL(TDes& aLibraryName,const CFileStore& aDocStore,const CStreamDictionary& aStreamDic) const
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	{
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	TApaAppIdentifier appId=ReadAppIdentifierL(aDocStore,aStreamDic);
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	aLibraryName=appId.iFullName;
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	}
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const TUid KUidEikLastOpenFile={0x100000fb};
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const TUid KUidEikLastCreatedFile={0x100000fc};
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EXPORT_C void CEikProcess::SetLastUsedFileL(TLastUsedFile aType,const TDesC& aFileName) const
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/** Sets the name of either the last opened or the last created file. 
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The information is written to the .ini file of the application associated 
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with the main document. It attempts to create an .ini file if one does not exist.
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@param aType Indicates whether aFileName is the name of the last opened or last 
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created file.
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@param aFileName The name of the last opened or last created file.*/
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	{
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	CDictionaryStore* iniFile=OpenMainAppIniFileLC();
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	if (iniFile==NULL)
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		return;
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	RDictionaryWriteStream writeStream;
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	writeStream.AssignLC(*iniFile,aType==ELastOpenFile? KUidEikLastOpenFile: KUidEikLastCreatedFile);
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	writeStream << aFileName;
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	writeStream.CommitL();
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	CleanupStack::PopAndDestroy(); // writeStream
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	iniFile->CommitL();
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	CleanupStack::PopAndDestroy(); // inifile
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	}
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// implementation changed; function now never leaves.
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EXPORT_C TFileName CEikProcess::LastUsedFileL(TLastUsedFile aType) const
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/** Gets the name of either the last opened or last created file. 
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The information is read from the .ini file of the application associated with 
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the main document. The function cannot leave. If an error occurs, the function 
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returns an empty filename.
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@param aType Indicates whether the function should return the name of the last 
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opened or last created file.
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@return The name of the last opened or last created file.*/
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	{
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	TFileName ret;
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	CDictionaryStore* iniFile=NULL;
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	TRAPD(inierr, iniFile=OpenMainAppIniFileLC();
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		if (iniFile)
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			CleanupStack::Pop(););
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	if (!inierr)
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		{
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		if (iniFile!=NULL)
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			{
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			CleanupStack::PushL(iniFile);
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			RDictionaryReadStream readStream;
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			TRAPD(err,readStream.OpenL(*iniFile,aType==ELastOpenFile? KUidEikLastOpenFile: KUidEikLastCreatedFile));
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			if (!err)
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				{
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				TRAP(err,readStream >> ret);
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				readStream.Close();
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				}
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			CleanupStack::PopAndDestroy(); // iniFile
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			}
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		}
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	return(ret);
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	}
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/**
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@return Application's ini file
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@see CApaApplication::OpenIniFileLC(RFs &aFs)
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@internalComponent
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*/
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CDictionaryStore* CEikProcess::OpenMainAppIniFileLC() const
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	{
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 	CDictionaryStore* iniFile=((CEikProcess*)this)->MainDocument()->Application()->OpenIniFileLC(FsSession());
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	return(iniFile);
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	}