/*+
−
* Copyright (c) 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:      Utility for string operations in UpnpXmlParser component+
−
*+
−
*/+
−
+
−
+
−
+
−
+
−
+
−
+
−
// INCLUDE FILES+
−
#include <e32base.h>+
−
#include "upnpxmlstringutility.h"+
−
+
−
_LIT( KComponentLogfile, "upnpxmlstringutility.txt" );+
−
#include "upnplog.h"+
−
+
−
+
−
// CONSTANTS+
−
/**+
−
 * Range of control characters taken from http:+
−
 * //www.w3.org/International/questions/qa-controls. +
−
 * Remove characters that belong to "C0" range U+0000-U+001F +
−
 * (0-31) and also DEL (Delete) U+007F (127). C1 range U+0080-U+009F +
−
 * (128-159) is ignored for now because it seems to contain ok +
−
 * characters like € (euro sign).+
−
 * */+
−
+
−
const TInt KC0RangeStart = 0;+
−
const TInt KC0RangeEnd = 31;+
−
const TInt KDeleteChar = 127;+
−
+
−
// All control characters start with &#+
−
_LIT8( KXmlControlCharStart, "&#" );+
−
// All xml entities end with ; because they are of for &entityname;+
−
_LIT8( KXmlEntityEnd, ";" );+
−
+
−
// ============================ LOCAL FUNCTIONS =============================+
−
+
−
// --------------------------------------------------------------------------+
−
// UpnpXmlStringUtility::RemoveXmlControlCharactersL+
−
//---------------------------------------------------------------------------+
−
EXPORT_C HBufC8* UpnpXmlStringUtility::RemoveXmlControlCharactersL(+
−
    const TDesC8& aXmlData )+
−
    {+
−
    __LOG( "UpnpXmlStringUtility::RemoveXmlControlCharactersL Begin" );+
−
    HBufC8* filtrateBuf = NULL;+
−
    //if no data+
−
    if ( aXmlData.Length() != 0 )+
−
        {+
−
        //The offset of the KXmlControlCharStart from the beginning of \+
−
          this descriptor's data+
−
        +
−
        TInt controlCharStartOffset = aXmlData.Find( KXmlControlCharStart );+
−
        // to make sure the data contain control character.+
−
        if ( controlCharStartOffset != KErrNotFound )+
−
            {+
−
            filtrateBuf = aXmlData.AllocL();+
−
            CleanupStack::PushL( filtrateBuf );    +
−
            //The offset of the KXmlEntityEnd from the beginning of this \+
−
              descriptor's data+
−
            TInt controlCharEndOffset = 0;+
−
            //The offset of the buffer who not be checked+
−
            TInt partofBufferOffset = 0;+
−
   +
−
            //circle find control character.+
−
            while( controlCharStartOffset != KErrNotFound )+
−
                {+
−
                controlCharStartOffset += partofBufferOffset;+
−
                partofBufferOffset = controlCharStartOffset;+
−
                controlCharEndOffset = ( filtrateBuf->Des().+
−
                    Mid( controlCharStartOffset ).Find( KXmlEntityEnd ) );+
−
                if ( controlCharEndOffset != KErrNotFound )+
−
                    {+
−
                    TLex8 tempLex( filtrateBuf->Des().Mid( partofBufferOffset+
−
                      + KXmlControlCharStart().Length() ,controlCharEndOffset+
−
                      - KXmlControlCharStart().Length() ) );+
−
                    //Parses the string to extract a signed 8-bit integer.+
−
                    TInt tempNum;+
−
                    User::LeaveIfError( tempLex.Val( tempNum ) );+
−
                    if( ( tempNum >= KC0RangeStart && tempNum <= KC0RangeEnd )+
−
                         || ( tempNum == KDeleteChar ) )+
−
                        {+
−
                        __LOG( "UpnpXmlStringUtility::\+
−
RemoveXmlControlCharactersL delete control character" );+
−
                        TPtrC8 tmpBuf = filtrateBuf->Des().Mid( +
−
                            partofBufferOffset, controlCharEndOffset + +
−
                            KXmlEntityEnd().Length() );+
−
                        __LOG8( tmpBuf);+
−
                        +
−
                        filtrateBuf->Des().Delete( partofBufferOffset, +
−
                        controlCharEndOffset + KXmlEntityEnd().Length() );+
−
                        }+
−
                    else +
−
                        {+
−
                        __LOG1( "UpnpXmlStringUtility::\+
−
RemoveXmlControlCharactersL between &# and; the Number is %d",tempNum );+
−
                        }+
−
                    controlCharStartOffset = partofBufferOffset;+
−
                    controlCharStartOffset = ( filtrateBuf->Des().+
−
                                        Mid( controlCharStartOffset ).+
−
                                        Find( KXmlControlCharStart ) );+
−
                    }+
−
                else +
−
                    {+
−
                    __LOG( "UpnpXmlStringUtility::RemoveXmlControlCharactersL\+
−
 Can not find EntityEnd" );+
−
                    User::Leave( KErrArgument );+
−
                    }+
−
                }+
−
            CleanupStack::Pop( filtrateBuf );+
−
            }+
−
        else+
−
            {+
−
            // not contains control character.+
−
            __LOG( "UpnpXmlStringUtility::RemoveXmlControlCharactersL Can \+
−
                   not find control character!" );+
−
            }+
−
        }+
−
    else+
−
        {+
−
        //xml data is NULL+
−
        __LOG( "UpnpXmlStringUtility::RemoveXmlControlCharactersL the \+
−
                            xml data is NULL" );+
−
        }+
−
    __LOG( "UpnpXmlStringUtility::RemoveXmlControlCharactersL End" );+
−
    return filtrateBuf;+
−
    }+
−