libreoffice/xmloff/source/core/XMLBase64ImportContext.cxx

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#include <com/sun/star/io/XOutputStream.hpp>

#include <sax/tools/converter.hxx>

#include <xmloff/xmlimp.hxx>
#include <xmloff/XMLBase64ImportContext.hxx>

using ::rtl::OUString;
using ::rtl::OUStringBuffer;

using namespace ::com::sun::star::uno;
using namespace ::com::sun::star::xml::sax;
using namespace ::com::sun::star::io;

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

TYPEINIT1( XMLBase64ImportContext, SvXMLImportContext );


XMLBase64ImportContext::XMLBase64ImportContext(
        SvXMLImport& rImport, sal_uInt16 nPrfx, const OUString& rLName,
        const Reference< XAttributeList >&,
        const Reference< XOutputStream >& rOut ) :
    SvXMLImportContext( rImport, nPrfx, rLName ),
    xOut( rOut )
{
}

XMLBase64ImportContext::~XMLBase64ImportContext()
{
}


void XMLBase64ImportContext::EndElement()
{
    xOut->closeOutput();
}

void XMLBase64ImportContext::Characters( const ::rtl::OUString& rChars )
{
    OUString sTrimmedChars( rChars. trim() );
    if( !sTrimmedChars.isEmpty() )
    {
        OUString sChars;
        if( !sBase64CharsLeft.isEmpty() )
        {
            sChars = sBase64CharsLeft;
            sChars += sTrimmedChars;
            sBase64CharsLeft = OUString();
        }
        else
        {
            sChars = sTrimmedChars;
        }
        Sequence< sal_Int8 > aBuffer( (sChars.getLength() / 4) * 3 );
		sal_Int32 const nCharsDecoded =
				::sax::Converter::decodeBase64SomeChars( aBuffer, sChars );
        xOut->writeBytes( aBuffer );
        if( nCharsDecoded != sChars.getLength() )
            sBase64CharsLeft = sChars.copy( nCharsDecoded );
    }
}


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