--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/landmarks/locationlandmarks/converter/src/EPos_CPosLmXmlEncoder.cpp	Tue Feb 02 01:06:48 2010 +0200
@@ -0,0 +1,409 @@
+/*
+* Copyright (c) 2002-2007 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: Class used for encoding xml landmark content.
+*
+*
+*/
+
+
+#include    <lbsposition.h>
+#include    <EPos_LandmarksErrors.h>
+#include    "EPos_CPosLmXmlEncoder.h"
+#include    "EPos_CPosLmFileOutput.h"
+#include    "EPos_CPosLmBufferOutput.h"
+#include    "EPos_CPosLmXmlEncoderOperation.h"
+#include    "EPos_PosLmConverterUtils.h"
+
+const TInt KPosBufferExpandSize = 600;
+
+// ============================ MEMBER FUNCTIONS ===============================
+
+// -----------------------------------------------------------------------------
+// -----------------------------------------------------------------------------
+//
+CPosLmXmlEncoder::CPosLmXmlEncoder()
+    {
+    }
+
+// -----------------------------------------------------------------------------
+// -----------------------------------------------------------------------------
+//
+CPosLmXmlEncoder::~CPosLmXmlEncoder()
+    {
+    delete iOutput;
+    delete iCollectionDataName;
+    delete iCollectionDataDescription;
+    }
+
+// -----------------------------------------------------------------------------
+// -----------------------------------------------------------------------------
+//
+CBufBase* CPosLmXmlEncoder::SetUseOutputBufferL()
+    {
+    ResetEncoderL();
+
+    CBufBase* buffer = CreateOutPutBufferLC();
+
+    InitializeEncodingL();
+
+    CleanupStack::Pop(buffer);
+    return buffer;
+    }
+
+// -----------------------------------------------------------------------------
+// -----------------------------------------------------------------------------
+//
+void CPosLmXmlEncoder::SetOutputFileL(
+    const TDesC& aOutputFile)
+    {
+    ResetEncoderL();
+
+    CreateOutputFileL(aOutputFile);
+
+    InitializeEncodingL();
+    }
+
+// -----------------------------------------------------------------------------
+// -----------------------------------------------------------------------------
+//
+void CPosLmXmlEncoder::AddCollectionDataL(
+    TPosLmCollectionDataId aDataId,
+    const TDesC& aCollectionData)
+    {
+    __ASSERT_ALWAYS((iEncoderStatus != EPosUninitialized) &&
+        (iEncoderStatus != EPosLmInfoAdded),
+        Panic(KPosLandmarksClientPanic, EPosLmProtocolBreak));
+
+    __ASSERT_ALWAYS(aDataId != EPosLmCollDataNone,
+        Panic(KPosLandmarksClientPanic, EPosLmInvalidArgument));
+
+    if (aDataId == EPosLmCollDataCollectionName)
+        {
+        if (iCollectionDataName)
+            {
+            User::Leave(KErrAlreadyExists);
+            }
+        iCollectionDataName = aCollectionData.AllocL();
+        }
+    else if (aDataId == EPosLmCollDataCollectionDescription)
+        {
+        if (iCollectionDataDescription)
+            {
+            User::Leave(KErrAlreadyExists);
+            }
+        iCollectionDataDescription = aCollectionData.AllocL();
+        }
+    else
+        {
+        // Silently ignore unknown collection data.
+        return;
+        }
+
+    iEncoderStatus = EPosCollectionInfoAdded;
+    }
+
+// -----------------------------------------------------------------------------
+// -----------------------------------------------------------------------------
+//
+void CPosLmXmlEncoder::AddLandmarkL( const CPosLandmark& aLandmark )
+    {
+    __ASSERT_ALWAYS(
+        iEncoderStatus != EPosUninitialized,
+        Panic( KPosLandmarksClientPanic, EPosLmProtocolBreak ) );
+    
+    if ( iEncoderStatus == EPosCollectionInfoAdded )
+        {
+        WriteCollectionDataL( iCollectionDataName, iCollectionDataDescription );
+        }
+
+    WriteLastLandmarkL();
+    
+    iLastLandmark = CPosLandmark::NewL( aLandmark );
+    iEncoderStatus = EPosLmInfoAdded;
+    }
+
+// -----------------------------------------------------------------------------
+// -----------------------------------------------------------------------------
+//
+void CPosLmXmlEncoder::AddCategoryForLatestLandmarkL( const CPosLandmarkCategory& aCategory )
+    {
+    __ASSERT_ALWAYS(
+        iEncoderStatus == EPosLmInfoAdded,
+        Panic(KPosLandmarksClientPanic, EPosLmProtocolBreak));
+
+    iCategories.Append( CPosLandmarkCategory::NewL( aCategory ) );
+    }
+
+// -----------------------------------------------------------------------------
+// -----------------------------------------------------------------------------
+//
+void CPosLmXmlEncoder::InitializeEncodingL()
+    {
+    WritePrologL();
+    WriteStartTagsL();
+    iEncoderStatus = EPosInitialized;
+    }
+
+// -----------------------------------------------------------------------------
+// -----------------------------------------------------------------------------
+//
+CPosLmOperation* CPosLmXmlEncoder::FinalizeEncodingL()
+    {
+    __ASSERT_ALWAYS(
+        iEncoderStatus == EPosLmInfoAdded,
+        Panic(KPosLandmarksClientPanic, EPosLmProtocolBreak));
+
+    WriteLastLandmarkL();
+    WriteFinalTagsL();
+    
+    CPosLmXmlEncoderOperation* op = CPosLmXmlEncoderOperation::NewL( iOutput );
+    // Ownership of iOutput has been transferred to op.
+    iOutput = NULL;
+    iEncoderStatus = EPosUninitialized;
+    return op;
+    }
+
+// -----------------------------------------------------------------------------
+// -----------------------------------------------------------------------------
+//
+CBufBase* CPosLmXmlEncoder::CreateOutPutBufferLC()
+    {
+    CPosLmBufferOutput* output = CPosLmBufferOutput::NewL(KPosBufferExpandSize);
+    iOutput = output;
+    return output->BufferLC();
+    }
+
+// -----------------------------------------------------------------------------
+// -----------------------------------------------------------------------------
+//
+void CPosLmXmlEncoder::CreateOutputFileL( const TDesC& aOutputFile )
+    {
+    iOutput = CPosLmFileOutput::NewL(aOutputFile);
+    }
+
+// -----------------------------------------------------------------------------
+// -----------------------------------------------------------------------------
+//
+void CPosLmXmlEncoder::ResetEncoderL()
+    {
+    delete iOutput;
+    iOutput = NULL;
+
+    delete iCollectionDataName;
+    iCollectionDataName = NULL;
+    delete iCollectionDataDescription;
+    iCollectionDataDescription = NULL;
+    
+    delete iLastLandmark;
+    iLastLandmark = NULL;
+    iCategories.ResetAndDestroy();
+
+    ResetIndentation();
+    }
+
+// -----------------------------------------------------------------------------
+// -----------------------------------------------------------------------------
+//
+void CPosLmXmlEncoder::WritePrologL()
+    {
+    iOutput->WriteAndDeleteL( PrologStringLC() );
+    }
+
+// -----------------------------------------------------------------------------
+// -----------------------------------------------------------------------------
+//
+void CPosLmXmlEncoder::WriteSTagL( TPosXmlTagType aTagType, const TDesC& aAttributes )
+    {
+    iOutput->WriteAndDeleteL( STagStringLC( aTagType, aAttributes ) );
+    }
+
+// -----------------------------------------------------------------------------
+// -----------------------------------------------------------------------------
+//
+void CPosLmXmlEncoder::WriteETagL( TPosXmlTagType aTagType )
+    {
+    iOutput->WriteAndDeleteL( ETagStringLC( aTagType ) );
+    }
+
+// -----------------------------------------------------------------------------
+// -----------------------------------------------------------------------------
+//
+void CPosLmXmlEncoder::WriteStringWithTagsL( const TDesC16& aDes, TPosXmlTagType aTagType )
+    {
+    WriteSTagL( aTagType, KNullDesC );
+    WriteEscapedStringL( aDes );
+    WriteETagL( aTagType );
+    }
+
+// -----------------------------------------------------------------------------
+// -----------------------------------------------------------------------------
+//
+void CPosLmXmlEncoder::WriteTRealWithTagsL( TReal aValue, TPosXmlTagType aTagType )
+    {
+    WriteSTagL( aTagType, KNullDesC );
+    iOutput->WriteTRealL( aValue );
+    WriteETagL( aTagType );
+    }
+
+// -----------------------------------------------------------------------------
+// -----------------------------------------------------------------------------
+//
+void CPosLmXmlEncoder::WriteEscapedStringL( const TDesC& aDes )
+    {
+    HBufC* des = PosLmConverterUtils::EscapeStringToXmlLC(aDes);
+    iOutput->WriteL(*des);
+    CleanupStack::PopAndDestroy(des);
+    }
+
+// -----------------------------------------------------------------------------
+// -----------------------------------------------------------------------------
+//
+HBufC16* CPosLmXmlEncoder::PrologStringLC()
+    {
+    HBufC16* string = HBufC16::NewLC( KPosLongStringLength );
+
+    string->Des().Append(KPosXmlDeclStart);
+    string->Des().Append(KPosXmlSpace);
+
+    string->Des().Append(KPosXmlVersion);
+    string->Des().Append(KPosXmlEq);
+    string->Des().Append(KPosXmlQuotationMark);
+    string->Des().Append(KPosXmlVersionNum10);
+    string->Des().Append(KPosXmlQuotationMark);
+
+    string->Des().Append(KPosXmlSpace);
+
+    string->Des().Append(KPosXmlEncoding);
+    string->Des().Append(KPosXmlEq);
+    string->Des().Append(KPosXmlQuotationMark);
+    string->Des().Append(KPosXmlEncNameUTF8);
+    string->Des().Append(KPosXmlQuotationMark);
+
+    string->Des().Append(KPosXmlDeclEnd);
+    string->Des().Append(KPosXmlNewLine);
+
+    return string;
+    }
+
+// -----------------------------------------------------------------------------
+// -----------------------------------------------------------------------------
+//
+void CPosLmXmlEncoder::WriteLastLandmarkL()
+    {
+    if ( iLastLandmark )
+        {
+        WriteLandmarkL( *iLastLandmark, iCategories );
+        
+        delete iLastLandmark;
+        iLastLandmark = NULL;
+        iCategories.ResetAndDestroy();
+        }
+    }
+
+// -----------------------------------------------------------------------------
+// -----------------------------------------------------------------------------
+//
+HBufC16* CPosLmXmlEncoder::STagStringLC( TPosXmlTagType aTagType, const TDesC& aAttributes )
+    {
+    TPtrC tag = TagNameL( aTagType );
+
+    HBufC16* indent = IndentationLC();     
+    HBufC16* string = HBufC16::NewLC( KPosStringLength + indent->Length() + aAttributes.Length() );
+
+    string->Des().Append( *indent );
+    string->Des().Append( KPosXmlSTagStart );
+    string->Des().Append( KPosXmlNameSpacePrefix );
+    string->Des().Append( tag );
+    
+    if ( aAttributes.Length() )
+        {
+        string->Des().Append( KPosXmlSpace );
+        string->Des().Append( aAttributes );
+        }
+    
+    string->Des().Append( KPosXmlTagEnd );
+
+    if ( !IsTagLeaf( aTagType ) )
+        {
+        string->Des().Append( KPosXmlNewLine );
+        iIndentationDepth++;
+        }
+
+    CleanupStack::Pop( string );
+    CleanupStack::PopAndDestroy( indent );
+    CleanupStack::PushL( string );
+    return string;
+    }
+
+// -----------------------------------------------------------------------------
+// -----------------------------------------------------------------------------
+//
+HBufC16* CPosLmXmlEncoder::ETagStringLC( TPosXmlTagType aTagType ) 
+    {
+    TPtrC tag = TagNameL( aTagType );
+
+    if ( !IsTagLeaf( aTagType ) )
+        {
+        iIndentationDepth = Max( iIndentationDepth - 1, 0 );
+        }
+
+    HBufC16* indent = IndentationLC();     
+    HBufC16* string = HBufC16::NewLC( KPosStringLength + indent->Length() );
+
+    if ( !IsTagLeaf( aTagType ) )
+        {
+        string->Des().Append( *indent );
+        }
+    string->Des().Append( KPosXmlETagStart );
+    string->Des().Append( KPosXmlNameSpacePrefix );
+    string->Des().Append( tag );
+    string->Des().Append( KPosXmlTagEnd );
+    string->Des().Append( KPosXmlNewLine );
+
+    CleanupStack::Pop( string );
+    CleanupStack::PopAndDestroy( indent );
+    CleanupStack::PushL( string );
+    return string;
+    }
+
+// -----------------------------------------------------------------------------
+// -----------------------------------------------------------------------------
+//
+void CPosLmXmlEncoder::ResetIndentation()
+    {
+    iIndentationDepth = 0;
+    }
+
+// -----------------------------------------------------------------------------
+// -----------------------------------------------------------------------------
+//
+HBufC16* CPosLmXmlEncoder::IndentationLC()
+    {
+    ASSERT( iIndentationDepth >= 0 );
+    TInt indentLength = iIndentationDepth * KPosXmlTab().Length();
+    HBufC16* indent = HBufC16::NewLC( indentLength );
+    for ( TInt i=0; i < iIndentationDepth; i++ )
+        {
+        indent->Des().Append( KPosXmlTab );
+        }
+    return indent;
+    }
+
+// -----------------------------------------------------------------------------
+// -----------------------------------------------------------------------------
+//
+TBool CPosLmXmlEncoder::IsTagLeaf( TPosXmlTagType aXmlTagType )
+    {
+    return ( aXmlTagType < EPosXmlLmLastTree );
+    }