// Copyright (c) 1996-2009 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:
// f32\sfat\sl_dir.cpp
// 
//

//!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
//!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
//!!
//!! WARNING!! DO NOT edit this file !! '\sfat' component is obsolete and is not being used. '\sfat32'replaces it
//!!
//!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
//!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

#include "sl_std.h"

CFatDirCB* CFatDirCB::NewL()
//
// Static constructor
//
    {

    CFatDirCB* fatDirCB=new(ELeave) CFatDirCB;
    return fatDirCB;
    }

CFatDirCB::CFatDirCB()
//
// Constructor
//
    {
    }

CFatDirCB::~CFatDirCB()
//
// Destructor
//
    {
    
    delete iMatch;
    delete iLongNameBuf;
    }

void CFatDirCB::SetDirL(const TFatDirEntry& anEntry,const TDesC& aName)
//
// Set the current entry to anEntryAddr
//
    {

    __PRINT(_L("CFatDirCB::SetDirL"));  
//  iEntryAddr=0;
//  iPending=EFalse;
    iEntry=anEntry;
    iCurrentPos.iCluster= FatMount().StartCluster(iEntry);
    iMatch=aName.AllocL();
    if (iUidType[0]!=TUid::Null() || iUidType[1]!=TUid::Null() || iUidType[2]!=TUid::Null())
        iMatchUid=ETrue;
    }

LOCAL_C TBool CompareUid(const TUidType& aUidTrg, const TUidType& aUidSuitor)
//
// Compare the suitor to the target pattern
//
    {
    
    if (aUidTrg[0]!=TUid::Null() && aUidTrg[0]!=aUidSuitor[0])
        return(EFalse);
    if (aUidTrg[1]!=TUid::Null() && aUidTrg[1]!=aUidSuitor[1])
        return(EFalse);
    if (aUidTrg[2]!=TUid::Null() && aUidTrg[2]!=aUidSuitor[2])
        return(EFalse);
    return(ETrue);
    }

void CFatDirCB::ReadL(TEntry &anEntry)
//
// Read the next entry from the directory.
//
    {

    __PRINT(_L("CFatDirCB::ReadL"));
    
    FatMount().CheckStateConsistentL();
    

    Mem::FillZ(&anEntry.iType,sizeof(TUidType));

    TPtr entryName(anEntry.iName.Des());
    FOREVER
        {
        if (iPending)
            entryName=(*iLongNameBuf);
        else
            {
            FatMount().FindDosNameL(*iMatch,iAtt,iCurrentPos,iEntry,entryName,KErrEof);
            FatMount().MoveToNextEntryL(iCurrentPos);
            }
        iPending=EFalse;
        if (iEntry.Attributes()&~KEntryAttMaskSupported)
            continue; // Ignore illegal entries
        anEntry.iAtt=iEntry.Attributes();
        anEntry.iSize=iEntry.Size();
        anEntry.iModified=iEntry.Time(FatMount().TimeOffset() );
    
        if (entryName.Length()==0)
            {
            //  VFAT entry names are always created for UNICODE at an earlier stage
            //  However, UNICODE builds may still encounter genuine FAT filenames through
            //  the introduction of files created using a narrow (ASCII) build
            TBuf8<0x20> dosName(DosNameFromStdFormat(iEntry.Name()));
            LocaleUtils::ConvertToUnicodeL(entryName, dosName);
            }
        TBool matchedUid=ETrue;
        if (iMatchUid && (anEntry.iAtt&KEntryAttDir)==EFalse)
            {
            if ((TUint)anEntry.iSize>=sizeof(TCheckedUid))
                FatMount().ReadUidL(FatMount().StartCluster(iEntry),anEntry);
            if (CompareUid(iUidType,anEntry.iType)==EFalse)
                matchedUid=EFalse;
            }
                    
        if (matchedUid)
            break;
        }
    if ((iAtt&KEntryAttAllowUid)==0 || (anEntry.iAtt&KEntryAttDir) || (TUint)anEntry.iSize<sizeof(TCheckedUid))
        return;
    if (iMatchUid==EFalse)
        {
        TInt r;
        TRAP(r,FatMount().ReadUidL(FatMount().StartCluster(iEntry),anEntry));
        if(r!=KErrNone && r!=KErrCorrupt)
            User::Leave(r);
        }
    }

void CFatDirCB::StoreLongEntryNameL(const TDesC& aName)
//
// Store aName while next read is pending
//
    {

    AllocBufferL(iLongNameBuf,aName);
    }