/*

* Copyright (c) 2006-2008 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "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: 

*     An utility class to handle the UIDs and filename extensions used to

*     identify data types. It is also used to store the results per data type.

*

*/

// SYSTEM INCLUDES

#include    <mseng.rsg>

#include    <bautils.h>

#include    <barsc.h>    // RResourceFile

// USER INCLUDES

#include    "msenginfoarray.h"

#include    "mseng.h"    // KMsengRscFilePath

// ================= MEMBER FUNCTIONS =======================

// ---------------------------------------------------------------------------

// CMsengInfoArray::CMsengInfoArray()

//

// C++ default constructor is prohibited

// ---------------------------------------------------------------------------

CMsengInfoArray::CMsengInfoArray(TDriveNumber aDrive)

: iCurrentScannedDrive(aDrive)

    {

    }

// ---------------------------------------------------------------------------

// CMsengInfoArray::NewL()

//

// Two-phased constructor.

// ---------------------------------------------------------------------------

CMsengInfoArray* CMsengInfoArray::NewL(TDriveNumber aDrive,

                                       TInt aNumberOfDataGroups,

                                       RFs& aFsSession,

                                       CResourceFile& aResFile)

    {

    CMsengInfoArray* self = new (ELeave) CMsengInfoArray(aDrive);

    CleanupStack::PushL( self );

    self->ConstructL(aNumberOfDataGroups, aFsSession, aResFile);

    CleanupStack::Pop( self );

    return self;

    }

// ---------------------------------------------------------------------------

// CMsengInfoArray::ConstructL()

//

// Symbian OS default constructor can leave.

// ---------------------------------------------------------------------------

void CMsengInfoArray::ConstructL(TInt aNumberOfDataGroups,

                                 RFs& aFsSession,

                                 CResourceFile& aResFile)

    {

    // Create data structures and initialize them

    // using values from enumerations TUidTypes and TExtTypes

    // and data from the resource file mseng.rss

    TInt index = -1; // index used in for-loops

    TInt length = -1; // length of resource array being read

    RResourceReader theReader;

    theReader.OpenLC( &aResFile, UIDARRAY );

    //the first WORD contains the number of elements in the resource

    length = theReader.ReadInt16L();

    // Create the array with appropriate granularity

    iUidResultArray = new (ELeave) CArrayFixFlat<TInt64>(length);

    // Initialize the array to contain zeros

    for(index=0; index<length; index++)

        {

        iUidResultArray->InsertL(index, 0);

        }

    // Next, create the array for the actual UIDs

    // and read them from the resource file

    iUidArray = new (ELeave) CArrayFixFlat<TUid>(length);

    for(index=0; index<length; index++)

        {

        const TInt typeindex = theReader.ReadInt8L();

        const TUid uid = TUid::Uid(theReader.ReadInt32L());

        //

        iUidArray->InsertL(typeindex, uid);

        }

    CleanupStack::PopAndDestroy(&theReader);

    // Read extarray in a similar way

    theReader.OpenLC( &aResFile, EXTARRAY );

    //the first WORD contains the number of elements in the resource

    length = theReader.ReadInt16L();

    // Create the array with appropriate granularity

    iExtResultArray = new (ELeave) CArrayFixFlat<TInt64>(length);

    // Initialize the array to contain zeros

    for(index=0; index<length; index++)

        {

        iExtResultArray->InsertL(index, 0);

        }

    // Next, create the array for the actual extensions

    // and read them from the resource file

    iExtArray = new (ELeave) CDesCArrayFlat(length);

    for(index=0; index<length; index++)

        {

        TInt typeindex = theReader.ReadInt8L();

        TPtrC ext = theReader.ReadTPtrCL();

        iExtArray->InsertL(typeindex, ext);

        }

    CleanupStack::PopAndDestroy( &theReader ); 

    // Create the array for results per group

    iGroupResultArray = new (ELeave) CArrayFixFlat<TInt64>(aNumberOfDataGroups);

    // Initialize the array to contain zeros

    for(index=0; index<aNumberOfDataGroups; index++)

        {

        iGroupResultArray->InsertL(index, 0);

        }

    // The directories to be scanned. Depends of which drive is scanned,

    // and the directories that are scanned as a whole (and excluded in the normal scan)

    _LIT(KPanic,"MSENG");

    __ASSERT_ALWAYS((CMseng::IsInternalDrive(aFsSession, iCurrentScannedDrive)

        || CMseng::IsRemovableDrive(aFsSession, iCurrentScannedDrive)),

        User::Panic(KPanic, KErrNotSupported));

    if(CMseng::IsInternalDrive(aFsSession, iCurrentScannedDrive))

        {        

        theReader.OpenLC( &aResFile, C_DIRECTORIES );

        iDirArray = theReader.ReadDesCArrayL();

        CleanupStack::PopAndDestroy( &theReader );

        //

        theReader.OpenLC( &aResFile, C_EXCLUDED_DIRECTORIES );

        iExcludedDirArray = theReader.ReadDesCArrayL();

        CleanupStack::PopAndDestroy( &theReader );

        //

        theReader.OpenLC( &aResFile, C_SPECIAL_DATADIRS );

        // reading later...

        }

    else if(CMseng::IsRemovableDrive(aFsSession, iCurrentScannedDrive))

        {

        theReader.OpenLC( &aResFile, E_DIRECTORIES );

        iDirArray = theReader.ReadDesCArrayL();

        CleanupStack::PopAndDestroy( &theReader );

        //

        theReader.OpenLC( &aResFile, E_EXCLUDED_DIRECTORIES );

        iExcludedDirArray = theReader.ReadDesCArrayL();

        CleanupStack::PopAndDestroy( &theReader );

        //

        theReader.OpenLC( &aResFile, E_SPECIAL_DATADIRS );

        // reading later...

        }

    // Apply correct drive letter in directory array names

    TInt dirCount = iDirArray->Count();

    for (TInt i=0; i<dirCount; i++)

        {

        HBufC* dirName = iDirArray->MdcaPoint(i).AllocLC();

        TPtr ptrName = dirName->Des();

        TBuf<1> drive;

        TChar ch;

        if ( RFs::DriveToChar( iCurrentScannedDrive, ch ) == KErrNone )

            {

            drive.Append(ch);

            ptrName.Replace(0, drive.Length(), drive);

            }

        iDirArray->Delete(i);

        iDirArray->InsertL(i, ptrName);

        CleanupStack::PopAndDestroy(dirName);

        }

    // Apply correct drive letter in excluded directory array names

    TInt exDirCount = iExcludedDirArray->Count();

    for (TInt i=0; i<exDirCount; i++)

        {

        HBufC* dirName = iExcludedDirArray->MdcaPoint(i).AllocLC();

        TPtr ptrName = dirName->Des();

        TBuf<1> drive;

        TChar ch;

        if ( RFs::DriveToChar( iCurrentScannedDrive, ch ) == KErrNone )

            {

            drive.Append(ch);

            ptrName.Replace(0, drive.Length(), drive);

            }

        iExcludedDirArray->Delete(i);

        iExcludedDirArray->InsertL(i, ptrName);

        CleanupStack::PopAndDestroy(dirName);

        }

    //the first WORD contains the number of elements in the resource

    length = theReader.ReadInt16L();

    // Create the arrays for special data dirs

    iDataDirArray = new (ELeave) CDesCArrayFlat(length);

    iDataDirGroupArray = new (ELeave) CArrayFixFlat<TInt>(length);

    iDataDirExclArray = new (ELeave) CArrayPtrFlat<CDesCArray>(length);

    // Read the array resource

    for(TInt i=0; i<length; i++)

        {

        TInt groupindex = theReader.ReadInt8L();

        TChar ch;

        HBufC* name = theReader.ReadHBufCL();

        CleanupStack::PushL(name);

        TPtr ptrName = name->Des();

        TBuf<1> drive;

        TBool driveValid = EFalse;

        if ( RFs::DriveToChar( iCurrentScannedDrive, ch ) == KErrNone )

            {

            driveValid = ETrue;

            drive.Append(ch);

            ptrName.Replace(0, drive.Length(), drive);

            }

        // Next WORD contains the number of excluded files

        TInt lengthExcl = theReader.ReadInt16L();

        TBool folderExists = EFalse;

        // Add directory to the list to be scanned

        if(driveValid && BaflUtils::FolderExists(aFsSession, ptrName))

            {

            folderExists = ETrue;

            iDataDirArray->AppendL(ptrName);

            iDataDirGroupArray->AppendL(groupindex);

            iDataDirExclArray->AppendL(NULL);

            CDesCArray* subarray = new (ELeave) CDesCArrayFlat( Max(lengthExcl, 1) );

            const TInt dirCount = iDataDirExclArray->Count();

            iDataDirExclArray->At(dirCount-1) = subarray;

            }

        for(TInt j=0; j<lengthExcl; j++)

            {

            TPtrC nameExcl = theReader.ReadTPtrCL();

            // Append special file only if folder exists

            if(folderExists)

                {

                const TInt dirCount = iDataDirExclArray->Count();

                iDataDirExclArray->At(dirCount-1)->AppendL( nameExcl );

                }

            }

        // If there was an error, we can assume it was because

        // the folder does not exist, and ignore the error.

        CleanupStack::PopAndDestroy( name );

        }

    CleanupStack::PopAndDestroy( &theReader );

#ifdef __SHOW_RDEBUG_PRINT_

    RDebug::Print(_L("CMsengInfoArray constructed. Printing current configuration.\n    Extensions:"));

    for(TInt j=0; j < Exts().Count(); j++)

        {

        HBufC* ext = Exts().MdcaPoint(j).AllocL();

        RDebug::Print(_L("    %d: %S"), j, ext);

        delete ext;

        }

    RDebug::Print(_L("    UIDs:"));

    for(TInt k=0; k < Uids().Count(); k++)

        {

        TUidName uid; 

        uid = Uids().At(k).Name();

        RDebug::Print(_L("    %d: %S"), k, &uid);

        }

#endif // __SHOW_RDEBUG_PRINT_

    }

// ---------------------------------------------------------------------------

// CMsengInfoArray::~CMsengInfoArray()

//

// Destructor

// ---------------------------------------------------------------------------

CMsengInfoArray::~CMsengInfoArray()

    {  

    // delete data structures

    delete iUidResultArray;

    delete iExtResultArray;

    delete iGroupResultArray;

    delete iUidArray;

    delete iExtArray;

    delete iDirArray;

    delete iExcludedDirArray;

    delete iDataDirArray;

    delete iDataDirGroupArray;

    if(iDataDirExclArray)

        {

        iDataDirExclArray->ResetAndDestroy();

        }

    delete iDataDirExclArray;

    }

// ---------------------------------------------------------------------------

// CMsengInfoArray::IsExcludedDir()

// 

//

// ---------------------------------------------------------------------------

TBool CMsengInfoArray::IsExcludedDir(const TDesC& aDirectory) const

    {

    TInt count = iExcludedDirArray->Count();

    for(TInt i=0; i<count; i++)

        {

        if(aDirectory.FindF(iExcludedDirArray->MdcaPoint(i)) == 0)

            {

            return ETrue;

            }

        }

    return EFalse;

    }

// ---------------------------------------------------------------------------

// CMsengInfoArray::FolderExists()

//

//

// ---------------------------------------------------------------------------

TBool CMsengInfoArray::FolderExists(RFs& aFs, const TDesC& aPath)

    {

    TBool result = EFalse;

    if(BaflUtils::FolderExists(aFs, aPath))

        {

        result = ETrue;

        }

    // BaflUtils::FolderExists return KErrBadName, if called with

    // only drive letter (like "c:\")

    else

        {

        TChar driveLetter;

        if( RFs::DriveToChar(CurrentDrive(), driveLetter) == KErrNone)

            {

            TBuf<1> driveName;

            driveName.Append(driveLetter);

            TInt cmp = aPath.CompareF(BaflUtils::RootFolderPath(driveName));

            result = (cmp == 0);

            }

        }

    return result;

    }

// ---------------------------------------------------------------------------

// CMsengInfoArray::IsSpecialDir()

//

//

// ---------------------------------------------------------------------------

TBool CMsengInfoArray::IsSpecialDir(const TDesC& aDirectory) const

    {

    TInt count = iDataDirArray->Count();

    for(TInt i=0; i<count; i++)

        {

        if(aDirectory.FindF(iDataDirArray->MdcaPoint(i)) == 0)

            {

            return ETrue;

            }

        }

    return EFalse;

    }

//  End of File