locationcentre/lcserver/src/lcregxmlparserutils.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Tue, 02 Feb 2010 00:16:03 +0200
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/*
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* Copyright (c) 2007 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:  Location Centre Server object.
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*
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*/
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// SYSTEM INCLUDES
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#include <utf.h>
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// USER INCLUDES
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#include "lcregxmlparserutils.h"
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#include "lcregxmltagtype.h"
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// CONSTANTS
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const TInt KBufLength = 30;
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// ============================ MEMBER FUNCTIONS ===============================
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// -----------------------------------------------------------------------------
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// LcRegXmlParserUtils::Utf8ToUnicodeL
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//
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// (other items were commented in a header).
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// -----------------------------------------------------------------------------
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//
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void LcRegXmlParserUtils::Utf8ToUnicodeL(
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    const TDesC8& aUtf8,
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    TDes16& aUnicode)
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    {
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    // Create a small output buffer
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    TBuf16<KBufLength> output;
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    // Create a buffer for the unconverted text
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    TPtrC8 remUtf8(aUtf8);
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    TBool convertingReady = EFalse;
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    while (!convertingReady) // conversion loop
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        {
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        // Start conversion. When the output buffer is full, return the
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        // number of characters that were not converted
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        const TInt err = CnvUtfConverter::ConvertToUnicodeFromUtf8(
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            output, remUtf8);
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        // check to see that the descriptor isn't corrupt - leave if it is
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        if (err == CnvUtfConverter::EErrorIllFormedInput)
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            {
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            User::Leave(KErrCorrupt);
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            }
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        else if (err < 0) // future-proof against "TError" expanding
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            {
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            User::Leave(KErrGeneral);
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            }
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        // Do something here to store the contents of the output buffer.
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        if (aUnicode.Length() + output.Length() > aUnicode.MaxLength())
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            {
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            User::Leave(KErrNoMemory);
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            }
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        aUnicode.Append(output);
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        // Finish conversion if there are no unconverted characters in the
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        // remainder buffer
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        if (err == 0)
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            {
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            convertingReady = ETrue;
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            }
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        else
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            {
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            // Remove the converted source text from the remainder buffer.
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            // The remainder buffer is then fed back into loop
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            remUtf8.Set(remUtf8.Right(err));
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            }
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        }
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    }
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// -----------------------------------------------------------------------------
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// LcRegXmlParserUtils::OnlyWhiteSpaces
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//
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// (other items were commented in a header).
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// -----------------------------------------------------------------------------
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//
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TBool LcRegXmlParserUtils::OnlyWhiteSpaces(
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    const TDesC8& aStr)
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    {
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    for (TInt i=0; i<aStr.Length(); i++)
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        {
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        TChar ch = TChar(aStr[i]);
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        if (!ch.IsSpace())
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            {
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            return EFalse;
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            }
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        }
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    return ETrue;
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    }
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//  End of File