Example #1
0
OGRErr OGRPolygon::importFromWkb( const unsigned char * pabyData,
                                  int nSize,
                                  OGRwkbVariant eWkbVariant,
                                  int& nBytesConsumedOut )

{
    nBytesConsumedOut = -1;
    OGRwkbByteOrder eByteOrder = wkbNDR;
    int nDataOffset = 0;
    // coverity[tainted_data]
    OGRErr eErr = oCC.importPreambleFromWkb(this, pabyData, nSize, nDataOffset,
                                             eByteOrder, 4, eWkbVariant);
    if( eErr != OGRERR_NONE )
        return eErr;

/* -------------------------------------------------------------------- */
/*      Get the rings.                                                  */
/* -------------------------------------------------------------------- */
    for( int iRing = 0; iRing < oCC.nCurveCount; iRing++ )
    {
        OGRLinearRing* poLR = new OGRLinearRing();
        oCC.papoCurves[iRing] = poLR;
        int nBytesConsumedRing = -1;
        eErr = poLR->_importFromWkb( eByteOrder, flags,
                                     pabyData + nDataOffset,
                                     nSize,
                                     nBytesConsumedRing );
        if( eErr != OGRERR_NONE )
        {
            delete oCC.papoCurves[iRing];
            oCC.nCurveCount = iRing;
            return eErr;
        }

        CPLAssert( nBytesConsumedRing > 0 );
        if( nSize != -1 )
        {
            CPLAssert( nSize >= nBytesConsumedRing );
            nSize -= nBytesConsumedRing;
        }

        nDataOffset += nBytesConsumedRing;
    }
    nBytesConsumedOut = nDataOffset;

    return OGRERR_NONE;
}
Example #2
0
OGRErr OGRPolygon::importFromWkb( unsigned char * pabyData,
                                  int nSize,
                                  OGRwkbVariant eWkbVariant )

{
    OGRwkbByteOrder eByteOrder = wkbNDR;
    int nDataOffset = 0;
    // coverity[tainted_data]
    OGRErr eErr = oCC.importPreambuleFromWkb(this, pabyData, nSize, nDataOffset,
                                             eByteOrder, 4, eWkbVariant);
    if( eErr != OGRERR_NONE )
        return eErr;

/* -------------------------------------------------------------------- */
/*      Get the rings.                                                  */
/* -------------------------------------------------------------------- */
    for( int iRing = 0; iRing < oCC.nCurveCount; iRing++ )
    {
        OGRLinearRing* poLR = new OGRLinearRing();
        oCC.papoCurves[iRing] = poLR;
        eErr = poLR->_importFromWkb( eByteOrder, flags,
                                                 pabyData + nDataOffset,
                                                 nSize );
        if( eErr != OGRERR_NONE )
        {
            delete oCC.papoCurves[iRing];
            oCC.nCurveCount = iRing;
            return eErr;
        }

        if( nSize != -1 )
            nSize -= poLR->_WkbSize( flags );

        nDataOffset += poLR->_WkbSize( flags );
    }

    return OGRERR_NONE;
}