/*

* Copyright (c) 2002-2004 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:  Parse WebDAV PROPFIND method response body

 *

*/

// INCLUDE FILES

#include <f32file.h>

#include <escapeutils.h>

#include <tinternetdate.h>

#include "rsfwpropfindparser.h"

//#include "rsfwdirent.h"

#include "rsfwdirentattr.h"

#include "mdebug.h"

#include "uri8.h"

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

CRsfwPropFindParser* CRsfwPropFindParser::NewLC()

    {

    CRsfwPropFindParser* self = new (ELeave) CRsfwPropFindParser;

    CleanupStack::PushL(self);

    self->ConstructL();

    return self;

    }

CRsfwPropFindParser* CRsfwPropFindParser::NewL()

    {

    CRsfwPropFindParser* self = NewLC();

    CleanupStack::Pop(self);

    return self;

    }

void CRsfwPropFindParser::ConstructL()

    {

    ClearDirEntryL();

    iCurrentIsParent = EFalse;

    }

CRsfwPropFindParser::~CRsfwPropFindParser()

    {

    delete iDirEntry;

    delete iContentString;

    }

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

// CRsfwPropFindParser::OnStartDocumentL

// This method is a callback to indicate the start of the document.

// @param aDocParam Specifies the various parameters of the document.

// @arg aDocParam.iCharacterSetName The character encoding of the document.

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

//

void CRsfwPropFindParser::OnStartDocumentL(

    const Xml::RDocumentParameters& /* aDocParam */,

    TInt aErrCode)

    {

    iError = KErrNone;    // discard the old error

    if (!aErrCode)

        {

        iParseState = ELooking;

        }

    else

        {

        User::Leave(aErrCode);

        }

    }

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

// CRsfwPropFindParser::OnStartDocumentL

// This method is a callback to indicate the end of the document.

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

//

void CRsfwPropFindParser::OnEndDocumentL(TInt aErrCode)

    {

    if (aErrCode)

        {

        User::Leave(aErrCode);

        }

    }

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

// CRsfwPropFindParser::OnStartElementL

// This method is a callback to indicate an element has been parsed.

// @param aElement is a handle to the element's details.

// @param aAttributes contains the attributes for the element.

// @param aErrorCode is the error code.

// If this is not KErrNone then special action may be required.

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

//

void CRsfwPropFindParser::OnStartElementL(

    const Xml::RTagInfo& aElement,

    const Xml::RAttributeArray& /* aAttributes */,

    TInt aErrorCode)

    {

    _LIT8(KResponseHeader, "response");

    _LIT8(KContentType,    "getcontenttype");

    _LIT8(KDate,           "creationdate");

    _LIT8(KModified,       "getlastmodified");

    _LIT8(KLength,         "getcontentlength");

    _LIT8(KResourceType,   "resourcetype");

    _LIT8(KEtag,           "getetag");

    if (aErrorCode)

        {

        User::Leave(aErrorCode);

        }

    switch (iParseState)

        {

    case EName:

        break;

    case EResponse:

        {

        _LIT8(KHRef, "href");

        if (((aElement.LocalName()).DesC()).Compare(KHRef) == 0)

            {

            // href that follows response tag is the name of the file

            iParseState = EName;

            }

        }

        break;

    case EModified:

        break;

    case ELength:

        break;

    case EDate:

        break;

    case EResourceType:

        {

        _LIT8(KCollection, "collection");

        if (((aElement.LocalName()).DesC()).Compare(KCollection) == 0)

            {

            iDirEntry->Attr()->SetAtt(KEntryAttDir);

            }

        }

        break;

    case EContentType:

        break;

    case EETag:

        break;

    case ELooking: // we are trying to find the next interesting tag

        if (((aElement.LocalName()).DesC()).Compare(KModified) == 0)

            {

            iParseState = EModified;

            }

        else if (((aElement.LocalName()).DesC()).Compare(KLength) == 0)

            {

            iParseState = ELength;

            }

        else if (((aElement.LocalName()).DesC()).Compare(KDate) == 0)

            {

            iParseState = EDate;

            }

        else if (((aElement.LocalName()).DesC()).Compare(KResourceType) == 0)

            {

            iParseState = EResourceType;

            }

        else if (((aElement.LocalName()).DesC()).Compare(KContentType) == 0)

            {

            iParseState = EContentType;

            }

        else if (((aElement.LocalName()).DesC()).Compare(KResponseHeader) == 0)

            {

            iParseState = EResponse;

            }

        else if (((aElement.LocalName()).DesC()).Compare(KEtag) == 0)

            {

            iParseState = EETag;

            }

        else

            {

            // lint

            }

        break;

    default:

        break;

        }

    }

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

// CRsfwPropFindParser::OnEndElementL

// This method is a callback to indicate that end of element has been reached.

// @param aElement is a handle to the element's details.

// @param aErrorCode is the error code.

// If this is not KErrNone then special action may be required.

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

//

void CRsfwPropFindParser::OnEndElementL(const Xml::RTagInfo& aElement,

                                    TInt aErrorCode)

    {

    if (aErrorCode)

        {

        User::Leave(aErrorCode);

        }

    // If we reached </response> we can fill next entry in iDirEntArray

    _LIT8(KResponse, "*response");

    if (((aElement.LocalName()).DesC()).Match(KResponse) != KErrNotFound)

        {

        // Save the entry if depth = 0 or depth = 1 and

        // this is not the parent directory

        switch (iDepth)

            {

        case 0:

            iDirEntArray->Append(iDirEntry);

            // ownership transferred

            iDirEntry = NULL;

            break;

        case 1:

            if (!iCurrentIsParent)

                {

                iDirEntArray->Append(iDirEntry);

                // ownership transferred

                iDirEntry = NULL;

                }

            break;

        default:

            break;

            }

        if (iCurrentIsParent)

            {

            // We have 'seen' the end tag of parent directory

            iCurrentIsParent = EFalse;

            }

        // In any case going through an entry is complete,

        // reset iDirEntry

        ClearDirEntryL();

        delete iContentString;

        iContentString = NULL;

        iParseState = ELooking;

        }

    // otherwise we will continue reading

    // if we have some interesting content

    if ((iParseState != ELooking) && !iContentString)

        {

        iParseState = ELooking;

        return;

        }

    switch (iParseState)

        {

    case EName:

        {

        // Figure out whether the entry we are currently reading

        // is the directory itself.

        // The directory itself is the first one in the reply that

        // comes from server,

        // and the last one that our XML-parser passes to us

        // if the name is fully qualified URI, only take the path

        TPtrC8 uriPtr = iContentString->Des();

        TPtrC8 pathPtr = uriPtr;

        TUriParser8 uriParser;

        if (uriParser.Parse(uriPtr) == KErrNone) 

        {

        	pathPtr.Set(uriParser.Extract(EUriPath));

        }

        HBufC* name = DecodeL(pathPtr);

        CleanupStack::PushL(name);

        if (name->Compare(*iPropFindPath) == 0)

            {

            iCurrentIsParent = ETrue;

            }

        else

            {

            TPtrC namePtr = name->Des();

            if ((namePtr.Length() > 1) &&

                (namePtr[namePtr.Length() - 1] == '/'))

                {

                // strip off trailing '/'

                namePtr.Set(namePtr.Left(namePtr.Length() - 1));

                }

            TInt pos = namePtr.LocateReverse('/');

            // Shouldn't be negative as

            // the path should always start with '/'

            if ((pos >= 0) && (namePtr.Length() > 1))

                {

                namePtr.Set((namePtr.Right(namePtr.Length() - (pos + 1))));

                }

            iDirEntry->SetNameL(namePtr);

            }

        CleanupStack::PopAndDestroy(name);

        }

        break;

    case EModified:

        {

        // Webdav sends dates in RFC 822 format

        // (e.g., "Thu, 19 Dec 2002 13:51:16 GMT").

        // We parse them as 8 bit data.

        TInternetDate inetDate;

        inetDate.SetDateL(*iContentString);

        iDirEntry->Attr()->SetModified(inetDate.DateTime());

        }

        break;

    case ELength:

        {

        // Convert to int

        TLex8 lex(*iContentString);

        TInt len;

        User::LeaveIfError(lex.Val(len));

        iDirEntry->Attr()->SetSize(len);

        }

        break;

    case EETag:

        // etag is stored for files

        if (!(iDirEntry->Attr()->Att() & KEntryAttDir)) 

            {

            iDirEntry->Attr()->SetETagL(*iContentString);

            }

        break;

    case EContentType:

        {

        iDirEntry->Attr()->SetMimeTypeL(*iContentString);

        }

        break;

    default:

        break;

        }

    delete iContentString;

    iContentString = NULL;

    iParseState = ELooking;

    }

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

// CRsfwPropFindParser::OnContentL

// This method is a callback that sends the content of the element.

// Not all the content may be returned in one go.

// The data may be sent in chunks.

// When an OnEndElementL is received there is no more content to be sent.

// @param aBytes is the raw content data for the element.

// The client is responsible for converting the data to the

// required character set if necessary.

// In some instances the content may be binary and must not be converted.

// @param aErrorCode is the error code.

// If this is not KErrNone then special action may be required.

//

void CRsfwPropFindParser::OnContentL(const TDesC8& aBytes, TInt aErrorCode)

    {

    if (aErrorCode)

        {

        User::Leave(aErrorCode);

        }

    // We want to add to contentstring only if we are in a state

    // where the content is interesting to us

    if ((iParseState == EName) || (iParseState == EModified) ||

        (iParseState == ELength) || (iParseState ==EETag) ||

        (iParseState == EContentType))

        {

        if (!iContentString)

            {

            iContentString = HBufC8::NewL(aBytes.Length());

            TPtr8 string = iContentString->Des();

            string.Append(aBytes);

            }

        else

            {

            iContentString =

                iContentString->ReAllocL(iContentString->Length() +

                                         aBytes.Length());

            TPtr8 string = iContentString->Des();

            string.Append(aBytes);

            }

        }

    }

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

// CRsfwPropFindParser::OnStartPrefixMappingL

// This method is a notification of the beginning of the scope of a prefix-URI

// Namespace mapping.

// This method is always called before corresponding OnStartElementL method.

// @param aPrefix is the Namespace prefix being declared.

// @param aUri is the Namespace URI the prefix is mapped to.

// @param aErrorCode is the error code.

// If this is not KErrNone then special action may be required.

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

//

void CRsfwPropFindParser::OnStartPrefixMappingL(const RString& /* aPrefix */,

                                            const RString& /* aUri */,

                                            TInt aErrorCode)

    {

    if (aErrorCode)

        {

        User::Leave(aErrorCode);

        }

    }

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

// CRsfwPropFindParser::OnEndPrefixMappingL

// This method is a notification of end of the scope of a prefix-URI mapping.

// This method is called after the corresponding DoEndElementL method.

// @param aPrefix is the Namespace prefix that was mapped.

// @param aErrorCode is the error code.

// If this is not KErrNone then special action may be required.

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

//

void CRsfwPropFindParser::OnEndPrefixMappingL(const RString& /* aPrefix */,

                                          TInt aErrorCode)

    {

    if (aErrorCode)

        {

        User::Leave(aErrorCode);

        }

    }

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

// CRsfwPropFindParser::OnIgnorableWhiteSpaceL

// This method is a notification of ignorable whitespace in element content.

// @param aBytes are the ignored bytes from the document being parsed.

// @param aErrorCode is the error code.

// If this is not KErrNone then special action may be required.

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

//

void CRsfwPropFindParser::OnIgnorableWhiteSpaceL(const TDesC8& /* aBytes */,

                                             TInt aErrorCode)

    {

    if (aErrorCode)

        {

        User::Leave(aErrorCode);

        }

    }

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

// CRsfwPropFindParser::OnSkippedEntityL

// This method is a notification of a skipped entity.

// If the parser encounters an external entity it does not need to expand it -

// it can return the entity as aName for the client to deal with.

// @param aName is the name of the skipped entity.

// @param aErrorCode is the error code.

// If this is not KErrNone then special action may be required.

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

//

void CRsfwPropFindParser::OnSkippedEntityL(const RString& /* aName */,

                                       TInt aErrorCode)

    {

    if (aErrorCode)

        {

        User::Leave(aErrorCode);

        }

    }

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

// CRsfwPropFindParser::OnProcessingInstructionL

// This method is a receive notification of a processing instruction.

// @param aTarget is the processing instruction target.

// @param aData is the processing instruction data. If empty none was supplied.

// @param aErrorCode is the error code.

// If this is not KErrNone then special action may be required.

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

//

void CRsfwPropFindParser::OnProcessingInstructionL(const TDesC8& /* aTarget */,

                                               const TDesC8& /* aData */,

                                               TInt aErrorCode)

    {

    if (aErrorCode)

        {

        User::Leave(aErrorCode);

        }

    }

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

// CRsfwPropFindParser::OnError

// This method indicates an error has occurred.

// @param aErrorCode is the error code

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

//

void CRsfwPropFindParser::OnError(TInt aErrorCode)

    {

    DEBUGSTRING(("CRsfwPropFindParser::OnError(%d)", aErrorCode));

    iError = aErrorCode;

    }

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

// CRsfwPropFindParser::GetExtendedInterface

// This method obtains the interface matching the specified uid.

// @return 0 if no interface matching the uid is found.

// Otherwise, the this pointer cast to that interface.

// @param aUid the uid identifying the required interface.

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

//

TAny* CRsfwPropFindParser::GetExtendedInterface(const TInt32 /* aUid */)

    {

    return NULL;

    }

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

// CRsfwPropFindParser::SetDirEntArray

// Set a pointer to the directory entry array to be filled.

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

//