OGRErr OGRPoint::importFromWkb( unsigned char * pabyData,
int nSize,
OGRwkbVariant eWkbVariant )
{
OGRwkbByteOrder eByteOrder;
OGRBoolean bIs3D = FALSE;
OGRErr eErr = importPreambuleFromWkb( pabyData, nSize, eByteOrder, bIs3D, eWkbVariant );
if( eErr != OGRERR_NONE )
return eErr;
if ( nSize < ((bIs3D) ? 29 : 21) && nSize != -1 )
return OGRERR_NOT_ENOUGH_DATA;
/* -------------------------------------------------------------------- */
/* Get the vertex. */
/* -------------------------------------------------------------------- */
memcpy( &x, pabyData + 5, 8 );
memcpy( &y, pabyData + 5 + 8, 8 );
if( OGR_SWAP( eByteOrder ) )
{
CPL_SWAPDOUBLE( &x );
CPL_SWAPDOUBLE( &y );
}
if( bIs3D )
{
memcpy( &z, pabyData + 5 + 16, 8 );
if( OGR_SWAP( eByteOrder ) )
{
CPL_SWAPDOUBLE( &z );
}
nCoordDimension = 3;
}
else
{
z = 0;
nCoordDimension = 2;
}
/* Detect NaN coordinates --> EMPTY */
if( x != x && y != y )
nCoordDimension = -nCoordDimension;
return OGRERR_NONE;
}
OGRErr OGRPoint::exportToWkb( OGRwkbByteOrder eByteOrder,
unsigned char * pabyData,
OGRwkbVariant eWkbVariant ) const
{
/* -------------------------------------------------------------------- */
/* Set the byte order. */
/* -------------------------------------------------------------------- */
pabyData[0] = DB2_V72_UNFIX_BYTE_ORDER((unsigned char) eByteOrder);
/* -------------------------------------------------------------------- */
/* Set the geometry feature type. */
/* -------------------------------------------------------------------- */
GUInt32 nGType = getGeometryType();
if ( eWkbVariant == wkbVariantIso )
nGType = getIsoGeometryType();
if( eByteOrder == wkbNDR )
nGType = CPL_LSBWORD32( nGType );
else
nGType = CPL_MSBWORD32( nGType );
memcpy( pabyData + 1, &nGType, 4 );
/* -------------------------------------------------------------------- */
/* Copy in the raw data. */
/* -------------------------------------------------------------------- */
if ( IsEmpty() && eWkbVariant == wkbVariantIso )
{
double dNan = std::numeric_limits<double>::quiet_NaN();
memcpy( pabyData+5, &dNan, 8 );
memcpy( pabyData+5+8, &dNan, 8 );
if( getCoordinateDimension() == 3 )
memcpy( pabyData+5+16, &dNan, 8 );
}
else
{
memcpy( pabyData+5, &x, 16 );
if( getCoordinateDimension() == 3 )
{
memcpy( pabyData + 5 + 16, &z, 8 );
}
}
/* -------------------------------------------------------------------- */
/* Swap if needed. */
/* -------------------------------------------------------------------- */
if( OGR_SWAP( eByteOrder ) )
{
CPL_SWAPDOUBLE( pabyData + 5 );
CPL_SWAPDOUBLE( pabyData + 5 + 8 );
if( getCoordinateDimension() == 3 )
CPL_SWAPDOUBLE( pabyData + 5 + 16 );
}
return OGRERR_NONE;
}
OGRErr OGRLineString::exportToWkb( OGRwkbByteOrder eByteOrder,
unsigned char * pabyData ) const
{
/* -------------------------------------------------------------------- */
/* Set the byte order. */
/* -------------------------------------------------------------------- */
pabyData[0] = DB2_V72_UNFIX_BYTE_ORDER((unsigned char) eByteOrder);
/* -------------------------------------------------------------------- */
/* Set the geometry feature type. */
/* -------------------------------------------------------------------- */
GUInt32 nGType = getGeometryType();
if( eByteOrder == wkbNDR )
nGType = CPL_LSBWORD32( nGType );
else
nGType = CPL_MSBWORD32( nGType );
memcpy( pabyData + 1, &nGType, 4 );
/* -------------------------------------------------------------------- */
/* Copy in the data count. */
/* -------------------------------------------------------------------- */
memcpy( pabyData+5, &nPointCount, 4 );
/* -------------------------------------------------------------------- */
/* Copy in the raw data. */
/* -------------------------------------------------------------------- */
int i;
if( getCoordinateDimension() == 3 )
{
for( i = 0; i < nPointCount; i++ )
{
memcpy( pabyData + 9 + 24*i, paoPoints+i, 16 );
memcpy( pabyData + 9 + 16 + 24*i, padfZ+i, 8 );
}
}
else
memcpy( pabyData+9, paoPoints, 16 * nPointCount );
/* -------------------------------------------------------------------- */
/* Swap if needed. */
/* -------------------------------------------------------------------- */
if( OGR_SWAP( eByteOrder ) )
{
int nCount;
nCount = CPL_SWAP32( nPointCount );
memcpy( pabyData+5, &nCount, 4 );
for( i = getCoordinateDimension() * nPointCount - 1; i >= 0; i-- )
{
CPL_SWAP64PTR( pabyData + 9 + 8 * i );
}
}
return OGRERR_NONE;
}
OGRErr OGRPolygon::exportToWkb( OGRwkbByteOrder eByteOrder,
unsigned char * pabyData )
{
int nOffset;
/* -------------------------------------------------------------------- */
/* Set the byte order. */
/* -------------------------------------------------------------------- */
pabyData[0] = (unsigned char) eByteOrder;
/* -------------------------------------------------------------------- */
/* Set the geometry feature type. */
/* -------------------------------------------------------------------- */
if( eByteOrder == wkbNDR )
{
pabyData[1] = wkbPolygon;
pabyData[2] = 0;
pabyData[3] = 0;
pabyData[4] = 0;
}
else
{
pabyData[1] = 0;
pabyData[2] = 0;
pabyData[3] = 0;
pabyData[4] = wkbPolygon;
}
/* -------------------------------------------------------------------- */
/* Copy in the raw data. */
/* -------------------------------------------------------------------- */
if( OGR_SWAP( eByteOrder ) )
{
int nCount;
nCount = CPL_SWAP32( nRingCount );
memcpy( pabyData+5, &nCount, 4 );
}
else
{
memcpy( pabyData+5, &nRingCount, 4 );
}
nOffset = 9;
/* ==================================================================== */
/* Serialize each of the rings. */
/* ==================================================================== */
for( int iRing = 0; iRing < nRingCount; iRing++ )
{
papoRings[iRing]->_exportToWkb( eByteOrder,
pabyData + nOffset );
nOffset += papoRings[iRing]->_WkbSize();
}
return OGRERR_NONE;
}
OGRErr OGRGeometryCollection::exportToWkb( OGRwkbByteOrder eByteOrder,
unsigned char * pabyData )
{
int nOffset;
/* -------------------------------------------------------------------- */
/* Set the byte order. */
/* -------------------------------------------------------------------- */
pabyData[0] = (unsigned char) eByteOrder;
/* -------------------------------------------------------------------- */
/* Set the geometry feature type. */
/* -------------------------------------------------------------------- */
if( eByteOrder == wkbNDR )
{
pabyData[1] = getGeometryType();
pabyData[2] = 0;
pabyData[3] = 0;
pabyData[4] = 0;
}
else
{
pabyData[1] = 0;
pabyData[2] = 0;
pabyData[3] = 0;
pabyData[4] = getGeometryType();
}
/* -------------------------------------------------------------------- */
/* Copy in the raw data. */
/* -------------------------------------------------------------------- */
if( OGR_SWAP( eByteOrder ) )
{
int nCount;
nCount = CPL_SWAP32( nGeomCount );
memcpy( pabyData+5, &nCount, 4 );
}
else
{
memcpy( pabyData+5, &nGeomCount, 4 );
}
nOffset = 9;
/* ==================================================================== */
/* Serialize each of the Geoms. */
/* ==================================================================== */
for( int iGeom = 0; iGeom < nGeomCount; iGeom++ )
{
papoGeoms[iGeom]->exportToWkb( eByteOrder, pabyData + nOffset );
nOffset += papoGeoms[iGeom]->WkbSize();
}
return OGRERR_NONE;
}
OGRErr OGRPolygon::exportToWkb( OGRwkbByteOrder eByteOrder,
unsigned char * pabyData ) const
{
int nOffset;
int b3D = getCoordinateDimension() == 3;
/* -------------------------------------------------------------------- */
/* Set the byte order. */
/* -------------------------------------------------------------------- */
pabyData[0] = DB2_V72_UNFIX_BYTE_ORDER((unsigned char) eByteOrder);
/* -------------------------------------------------------------------- */
/* Set the geometry feature type. */
/* -------------------------------------------------------------------- */
GUInt32 nGType = getGeometryType();
if( eByteOrder == wkbNDR )
nGType = CPL_LSBWORD32( nGType );
else
nGType = CPL_MSBWORD32( nGType );
memcpy( pabyData + 1, &nGType, 4 );
/* -------------------------------------------------------------------- */
/* Copy in the raw data. */
/* -------------------------------------------------------------------- */
if( OGR_SWAP( eByteOrder ) )
{
int nCount;
nCount = CPL_SWAP32( nRingCount );
memcpy( pabyData+5, &nCount, 4 );
}
else
{
memcpy( pabyData+5, &nRingCount, 4 );
}
nOffset = 9;
/* ==================================================================== */
/* Serialize each of the rings. */
/* ==================================================================== */
for( int iRing = 0; iRing < nRingCount; iRing++ )
{
papoRings[iRing]->_exportToWkb( eByteOrder, b3D,
pabyData + nOffset );
nOffset += papoRings[iRing]->_WkbSize(b3D);
}
return OGRERR_NONE;
}
OGRErr OGRGeometryCollection::exportToWkb( OGRwkbByteOrder eByteOrder,
unsigned char * pabyData ) const
{
int nOffset;
/* -------------------------------------------------------------------- */
/* Set the byte order. */
/* -------------------------------------------------------------------- */
pabyData[0] = DB2_V72_UNFIX_BYTE_ORDER((unsigned char) eByteOrder);
/* -------------------------------------------------------------------- */
/* Set the geometry feature type, ensuring that 3D flag is */
/* preserved. */
/* -------------------------------------------------------------------- */
GUInt32 nGType = getGeometryType();
if( eByteOrder == wkbNDR )
nGType = CPL_LSBWORD32( nGType );
else
nGType = CPL_MSBWORD32( nGType );
memcpy( pabyData + 1, &nGType, 4 );
/* -------------------------------------------------------------------- */
/* Copy in the raw data. */
/* -------------------------------------------------------------------- */
if( OGR_SWAP( eByteOrder ) )
{
int nCount;
nCount = CPL_SWAP32( nGeomCount );
memcpy( pabyData+5, &nCount, 4 );
}
else
{
memcpy( pabyData+5, &nGeomCount, 4 );
}
nOffset = 9;
/* ==================================================================== */
/* Serialize each of the Geoms. */
/* ==================================================================== */
for( int iGeom = 0; iGeom < nGeomCount; iGeom++ )
{
papoGeoms[iGeom]->exportToWkb( eByteOrder, pabyData + nOffset );
nOffset += papoGeoms[iGeom]->WkbSize();
}
return OGRERR_NONE;
}
OGRErr OGRLinearRing::_exportToWkb( OGRwkbByteOrder eByteOrder, int b3D,
unsigned char * pabyData ) const
{
int i, nWords;
/* -------------------------------------------------------------------- */
/* Copy in the raw data. */
/* -------------------------------------------------------------------- */
memcpy( pabyData, &nPointCount, 4 );
/* -------------------------------------------------------------------- */
/* Copy in the raw data. */
/* -------------------------------------------------------------------- */
if( b3D )
{
nWords = 3 * nPointCount;
for( i = 0; i < nPointCount; i++ )
{
memcpy( pabyData+4+i*24, &(paoPoints[i].x), 8 );
memcpy( pabyData+4+i*24+8, &(paoPoints[i].y), 8 );
if( padfZ == NULL )
memset( pabyData+4+i*24+16, 0, 8 );
else
memcpy( pabyData+4+i*24+16, padfZ + i, 8 );
}
}
else
{
nWords = 2 * nPointCount;
memcpy( pabyData+4, paoPoints, 16 * nPointCount );
}
/* -------------------------------------------------------------------- */
/* Swap if needed. */
/* -------------------------------------------------------------------- */
if( OGR_SWAP( eByteOrder ) )
{
int nCount;
nCount = CPL_SWAP32( nPointCount );
memcpy( pabyData, &nCount, 4 );
for( i = 0; i < nWords; i++ )
{
CPL_SWAPDOUBLE( pabyData + 4 + 8 * i );
}
}
return OGRERR_NONE;
}
OGRErr OGRPoint::exportToWkb( OGRwkbByteOrder eByteOrder,
unsigned char * pabyData ) const
{
/* -------------------------------------------------------------------- */
/* Set the byte order. */
/* -------------------------------------------------------------------- */
pabyData[0] = DB2_V72_UNFIX_BYTE_ORDER((unsigned char) eByteOrder);
/* -------------------------------------------------------------------- */
/* Set the geometry feature type. */
/* -------------------------------------------------------------------- */
GUInt32 nGType = getGeometryType();
if( eByteOrder == wkbNDR )
nGType = CPL_LSBWORD32( nGType );
else
nGType = CPL_MSBWORD32( nGType );
memcpy( pabyData + 1, &nGType, 4 );
/* -------------------------------------------------------------------- */
/* Copy in the raw data. */
/* -------------------------------------------------------------------- */
memcpy( pabyData+5, &nQual, 4 );
memcpy( pabyData+9, &x, 16 );
if( z != 0 )
{
memcpy( pabyData + 9 + 16, &z, 8 );
}
/* -------------------------------------------------------------------- */
/* Swap if needed. */
/* -------------------------------------------------------------------- */
if( OGR_SWAP( eByteOrder ) )
{
CPL_SWAP32PTR( pabyData + 5 );
CPL_SWAPDOUBLE( pabyData + 9 );
CPL_SWAPDOUBLE( pabyData + 9 + 8 );
if( z != 0 )
CPL_SWAPDOUBLE( pabyData + 9 + 16 );
}
return OGRERR_NONE;
}
OGRErr OGRLineString::importFromWkb( unsigned char * pabyData,
int nBytesAvailable )
{
OGRwkbByteOrder eByteOrder;
if( nBytesAvailable < 21 && nBytesAvailable != -1 )
return OGRERR_NOT_ENOUGH_DATA;
/* -------------------------------------------------------------------- */
/* Get the byte order byte. */
/* -------------------------------------------------------------------- */
eByteOrder = (OGRwkbByteOrder) *pabyData;
assert( eByteOrder == wkbXDR || eByteOrder == wkbNDR );
/* -------------------------------------------------------------------- */
/* Get the geometry feature type. For now we assume that */
/* geometry type is between 0 and 255 so we only have to fetch */
/* one byte. */
/* -------------------------------------------------------------------- */
OGRwkbGeometryType eGeometryType;
int bIs3D;
if( eByteOrder == wkbNDR )
{
eGeometryType = (OGRwkbGeometryType) pabyData[1];
bIs3D = (pabyData[2] & 0x80);
}
else
{
eGeometryType = (OGRwkbGeometryType) pabyData[4];
bIs3D = (pabyData[3] & 0x80);
}
assert( eGeometryType == wkbLineString );
/* -------------------------------------------------------------------- */
/* Get the vertex count. */
/* -------------------------------------------------------------------- */
int nNewNumPoints;
memcpy( &nNewNumPoints, pabyData + 5, 4 );
if( OGR_SWAP( eByteOrder ) )
nNewNumPoints = CPL_SWAP32(nNewNumPoints);
setNumPoints( nNewNumPoints );
if( bIs3D )
Make3D();
else
Make2D();
/* -------------------------------------------------------------------- */
/* Get the vertex. */
/* -------------------------------------------------------------------- */
int i;
if( bIs3D )
{
for( i = 0; i < nPointCount; i++ )
{
memcpy( paoPoints + i, pabyData + 9 + i*24, 16 );
memcpy( padfZ + i, pabyData + 9 + 16 + i*24, 8 );
}
}
else
{
memcpy( paoPoints, pabyData + 9, 16 * nPointCount );
}
/* -------------------------------------------------------------------- */
/* Byte swap if needed. */
/* -------------------------------------------------------------------- */
if( OGR_SWAP( eByteOrder ) )
{
for( i = 0; i < nPointCount; i++ )
{
CPL_SWAPDOUBLE( &(paoPoints[i].x) );
CPL_SWAPDOUBLE( &(paoPoints[i].y) );
}
if( bIs3D )
{
for( i = 0; i < nPointCount; i++ )
{
CPL_SWAPDOUBLE( padfZ + i );
}
}
}
return OGRERR_NONE;
}
OGRErr OGRLineString::exportToWkb( OGRwkbByteOrder eByteOrder,
unsigned char * pabyData )
{
/* -------------------------------------------------------------------- */
/* Set the byte order. */
/* -------------------------------------------------------------------- */
pabyData[0] = (unsigned char) eByteOrder;
/* -------------------------------------------------------------------- */
/* Set the geometry feature type. */
/* -------------------------------------------------------------------- */
if( eByteOrder == wkbNDR )
{
pabyData[1] = wkbLineString;
if( getCoordinateDimension() == 3 )
pabyData[2] = 0x80;
else
pabyData[2] = 0;
pabyData[3] = 0;
pabyData[4] = 0;
}
else
{
pabyData[1] = 0;
pabyData[2] = 0;
if( getCoordinateDimension() == 3 )
pabyData[3] = 0x80;
else
pabyData[3] = 0;
pabyData[4] = wkbLineString;
}
/* -------------------------------------------------------------------- */
/* Copy in the raw data. */
/* -------------------------------------------------------------------- */
memcpy( pabyData+5, &nPointCount, 4 );
/* -------------------------------------------------------------------- */
/* Copy in the raw data. */
/* -------------------------------------------------------------------- */
int i;
if( getCoordinateDimension() == 3 )
{
for( i = 0; i < nPointCount; i++ )
{
memcpy( pabyData + 9 + 24*i, paoPoints+i, 16 );
memcpy( pabyData + 9 + 16 + 24*i, padfZ+i, 8 );
}
}
else
memcpy( pabyData+9, paoPoints, 16 * nPointCount );
/* -------------------------------------------------------------------- */
/* Swap if needed. */
/* -------------------------------------------------------------------- */
if( OGR_SWAP( eByteOrder ) )
{
int nCount;
nCount = CPL_SWAP32( nPointCount );
memcpy( pabyData+5, &nCount, 4 );
for( i = getCoordinateDimension() * 3 - 1; i >= 0; i-- )
{
CPL_SWAPDOUBLE( pabyData + 9 + 8 * i );
}
}
return OGRERR_NONE;
}
OGRErr OGRLinearRing::_importFromWkb( OGRwkbByteOrder eByteOrder, int b3D,
unsigned char * pabyData,
int nBytesAvailable )
{
if( nBytesAvailable < 4 && nBytesAvailable != -1 )
return OGRERR_NOT_ENOUGH_DATA;
/* -------------------------------------------------------------------- */
/* Get the vertex count. */
/* -------------------------------------------------------------------- */
int nNewNumPoints;
memcpy( &nNewNumPoints, pabyData, 4 );
if( OGR_SWAP( eByteOrder ) )
nNewNumPoints = CPL_SWAP32(nNewNumPoints);
/* Check if the wkb stream buffer is big enough to store
* fetched number of points.
* 16 or 24 - size of point structure
*/
int nPointSize = (b3D ? 24 : 16);
if (nNewNumPoints < 0 || nNewNumPoints > INT_MAX / nPointSize)
return OGRERR_CORRUPT_DATA;
int nBufferMinSize = nPointSize * nNewNumPoints;
if( nBytesAvailable != -1 && nBufferMinSize > nBytesAvailable - 4 )
{
CPLError( CE_Failure, CPLE_AppDefined,
"Length of input WKB is too small" );
return OGRERR_NOT_ENOUGH_DATA;
}
/* (Re)Allocation of paoPoints buffer. */
setNumPoints( nNewNumPoints );
if( b3D )
Make3D();
else
Make2D();
/* -------------------------------------------------------------------- */
/* Get the vertices */
/* -------------------------------------------------------------------- */
int i = 0;
if( !b3D )
{
memcpy( paoPoints, pabyData + 4, 16 * nPointCount );
}
else
{
for( int i = 0; i < nPointCount; i++ )
{
memcpy( &(paoPoints[i].x), pabyData + 4 + 24 * i, 8 );
memcpy( &(paoPoints[i].y), pabyData + 4 + 24 * i + 8, 8 );
memcpy( padfZ + i, pabyData + 4 + 24 * i + 16, 8 );
}
}
/* -------------------------------------------------------------------- */
/* Byte swap if needed. */
/* -------------------------------------------------------------------- */
if( OGR_SWAP( eByteOrder ) )
{
for( i = 0; i < nPointCount; i++ )
{
CPL_SWAPDOUBLE( &(paoPoints[i].x) );
CPL_SWAPDOUBLE( &(paoPoints[i].y) );
if( b3D )
{
CPL_SWAPDOUBLE( padfZ + i );
}
}
}
return OGRERR_NONE;
}
OGRErr GPkgHeaderFromWKB(const GByte *pabyGpkg, GPkgHeader *poHeader)
{
CPLAssert( pabyGpkg != NULL );
CPLAssert( poHeader != NULL );
/* Magic (match required) */
if ( pabyGpkg[0] != 0x47 ||
pabyGpkg[1] != 0x50 ||
pabyGpkg[2] != 0 ) /* Version (only 0 supported at this time)*/
{
return OGRERR_FAILURE;
}
/* Flags */
GByte byFlags = pabyGpkg[3];
poHeader->bEmpty = (byFlags & (0x01 << 4)) >> 4;
poHeader->bExtended = (byFlags & (0x01 << 5)) >> 5;
poHeader->eByteOrder = (OGRwkbByteOrder)(byFlags & 0x01);
OGRBoolean bSwap = OGR_SWAP(poHeader->eByteOrder);
/* Envelope */
int iEnvelope = (byFlags & (0x07 << 1)) >> 1;
if ( iEnvelope == 1 )
poHeader->iDims = 2; /* 2D envelope */
else if ( iEnvelope == 2 )
poHeader->iDims = 3; /* 3D envelope */
else
poHeader->iDims = 0; /* No envelope */
/* SrsId */
int iSrsId;
memcpy(&iSrsId, pabyGpkg+4, 4);
if ( bSwap )
{
iSrsId = CPL_SWAP32(iSrsId);
}
poHeader->iSrsId = iSrsId;
/* Envelope */
double *padPtr = (double*)(pabyGpkg+8);
if ( poHeader->iDims >= 2 )
{
poHeader->MinX = padPtr[0];
poHeader->MaxX = padPtr[1];
poHeader->MinY = padPtr[2];
poHeader->MaxY = padPtr[3];
if ( bSwap )
{
CPL_SWAPDOUBLE(&(poHeader->MinX));
CPL_SWAPDOUBLE(&(poHeader->MaxX));
CPL_SWAPDOUBLE(&(poHeader->MinY));
CPL_SWAPDOUBLE(&(poHeader->MaxY));
}
}
if ( poHeader->iDims == 3 )
{
poHeader->MinZ = padPtr[4];
poHeader->MaxZ = padPtr[5];
if ( bSwap )
{
CPL_SWAPDOUBLE(&(poHeader->MinZ));
CPL_SWAPDOUBLE(&(poHeader->MaxZ));
}
}
/* Header size in byte stream */
poHeader->szHeader = 8 + 8*2*(poHeader->iDims);
return OGRERR_NONE;
}
OGRErr OGRGeometryCollection::importFromWkb( unsigned char * pabyData,
int nSize )
{
OGRwkbByteOrder eByteOrder;
int nDataOffset;
if( nSize < 9 && nSize != -1 )
return OGRERR_NOT_ENOUGH_DATA;
/* -------------------------------------------------------------------- */
/* Get the byte order byte. */
/* -------------------------------------------------------------------- */
eByteOrder = DB2_V72_FIX_BYTE_ORDER((OGRwkbByteOrder) *pabyData);
CPLAssert( eByteOrder == wkbXDR || eByteOrder == wkbNDR );
/* -------------------------------------------------------------------- */
/* Get the geometry feature type. For now we assume that */
/* geometry type is between 0 and 255 so we only have to fetch */
/* one byte. */
/* -------------------------------------------------------------------- */
#ifdef DEBUG
OGRwkbGeometryType eGeometryType;
if( eByteOrder == wkbNDR )
{
eGeometryType = (OGRwkbGeometryType) pabyData[1];
}
else
{
eGeometryType = (OGRwkbGeometryType) pabyData[4];
}
CPLAssert( eGeometryType == wkbGeometryCollection
|| eGeometryType == wkbMultiPolygon
|| eGeometryType == wkbMultiLineString
|| eGeometryType == wkbMultiPoint );
#endif
/* -------------------------------------------------------------------- */
/* Do we already have some existing geometry objects? */
/* -------------------------------------------------------------------- */
if( nGeomCount != 0 )
{
for( int iGeom = 0; iGeom < nGeomCount; iGeom++ )
delete papoGeoms[iGeom];
OGRFree( papoGeoms );
papoGeoms = NULL;
}
/* -------------------------------------------------------------------- */
/* Get the geometry count. */
/* -------------------------------------------------------------------- */
memcpy( &nGeomCount, pabyData + 5, 4 );
if( OGR_SWAP( eByteOrder ) )
nGeomCount = CPL_SWAP32(nGeomCount);
papoGeoms = (OGRGeometry **) OGRMalloc(sizeof(void*) * nGeomCount);
nDataOffset = 9;
if( nSize != -1 )
nSize -= nDataOffset;
nCoordinateDimension = 0; // unknown
/* -------------------------------------------------------------------- */
/* Get the Geoms. */
/* -------------------------------------------------------------------- */
for( int iGeom = 0; iGeom < nGeomCount; iGeom++ )
{
OGRErr eErr;
eErr = OGRGeometryFactory::
createFromWkb( pabyData + nDataOffset, NULL,
papoGeoms + iGeom, nSize );
if( eErr != OGRERR_NONE )
{
nGeomCount = iGeom;
return eErr;
}
if( nSize != -1 )
nSize -= papoGeoms[iGeom]->WkbSize();
nDataOffset += papoGeoms[iGeom]->WkbSize();
}
return OGRERR_NONE;
}
OGRErr OGRGeometryCollection::exportToWkb( OGRwkbByteOrder eByteOrder,
unsigned char * pabyData,
OGRwkbVariant eWkbVariant ) const
{
if( eWkbVariant == wkbVariantOldOgc &&
(wkbFlatten(getGeometryType()) == wkbMultiCurve ||
wkbFlatten(getGeometryType()) == wkbMultiSurface) )
{
// Does not make sense for new geometries, so patch it.
eWkbVariant = wkbVariantIso;
}
/* -------------------------------------------------------------------- */
/* Set the byte order. */
/* -------------------------------------------------------------------- */
pabyData[0] = DB2_V72_UNFIX_BYTE_ORDER(static_cast<unsigned char>(eByteOrder));
/* -------------------------------------------------------------------- */
/* Set the geometry feature type, ensuring that 3D flag is */
/* preserved. */
/* -------------------------------------------------------------------- */
GUInt32 nGType = getGeometryType();
if( eWkbVariant == wkbVariantIso )
nGType = getIsoGeometryType();
else if( eWkbVariant == wkbVariantPostGIS1 )
{
const bool bIs3D = wkbHasZ(static_cast<OGRwkbGeometryType>(nGType));
nGType = wkbFlatten(nGType);
if( nGType == wkbMultiCurve )
nGType = POSTGIS15_MULTICURVE;
else if( nGType == wkbMultiSurface )
nGType = POSTGIS15_MULTISURFACE;
if( bIs3D )
// Yes, explicitly set wkb25DBit.
nGType = static_cast<OGRwkbGeometryType>(nGType | wkb25DBitInternalUse);
}
if( OGR_SWAP( eByteOrder ) )
{
nGType = CPL_SWAP32(nGType);
}
memcpy( pabyData + 1, &nGType, 4 );
/* -------------------------------------------------------------------- */
/* Copy in the raw data. */
/* -------------------------------------------------------------------- */
if( OGR_SWAP( eByteOrder ) )
{
int nCount = CPL_SWAP32( nGeomCount );
memcpy( pabyData+5, &nCount, 4 );
}
else
{
memcpy( pabyData+5, &nGeomCount, 4 );
}
int nOffset = 9;
/* ==================================================================== */
/* Serialize each of the Geoms. */
/* ==================================================================== */
int iGeom = 0;
for( auto&& poSubGeom: *this )
{
poSubGeom->exportToWkb( eByteOrder, pabyData + nOffset,
eWkbVariant );
// Should normally not happen if everyone else does its job,
// but has happened sometimes. (#6332)
if( poSubGeom->getCoordinateDimension() !=
getCoordinateDimension() )
{
CPLError(CE_Warning, CPLE_AppDefined,
"Sub-geometry %d has coordinate dimension %d, "
"but container has %d",
iGeom,
poSubGeom->getCoordinateDimension(),
getCoordinateDimension() );
}
nOffset += poSubGeom->WkbSize();
iGeom ++;
}
return OGRERR_NONE;
}
OGRErr OGRLinearRing::_exportToWkb( OGRwkbByteOrder eByteOrder, int _flags,
unsigned char * pabyData ) const
{
/* -------------------------------------------------------------------- */
/* Copy in the raw data. */
/* -------------------------------------------------------------------- */
memcpy( pabyData, &nPointCount, 4 );
/* -------------------------------------------------------------------- */
/* Copy in the raw data. */
/* -------------------------------------------------------------------- */
int nWords = 0;
if( (_flags & OGR_G_3D) && (_flags & OGR_G_MEASURED) )
{
nWords = 4 * nPointCount;
for( int i = 0; i < nPointCount; i++ )
{
memcpy( pabyData+4+i*32, &(paoPoints[i].x), 8 );
memcpy( pabyData+4+i*32+8, &(paoPoints[i].y), 8 );
if( padfZ == nullptr )
memset( pabyData+4+i*32+16, 0, 8 );
else
memcpy( pabyData+4+i*32+16, padfZ + i, 8 );
if( padfM == nullptr )
memset( pabyData+4+i*32+24, 0, 8 );
else
memcpy( pabyData+4+i*32+24, padfM + i, 8 );
}
}
else if( _flags & OGR_G_MEASURED )
{
nWords = 3 * nPointCount;
for( int i = 0; i < nPointCount; i++ )
{
memcpy( pabyData+4+i*24, &(paoPoints[i].x), 8 );
memcpy( pabyData+4+i*24+8, &(paoPoints[i].y), 8 );
if( padfM == nullptr )
memset( pabyData+4+i*24+16, 0, 8 );
else
memcpy( pabyData+4+i*24+16, padfM + i, 8 );
}
}
else if( _flags & OGR_G_3D )
{
nWords = 3 * nPointCount;
for( int i = 0; i < nPointCount; i++ )
{
memcpy( pabyData+4+i*24, &(paoPoints[i].x), 8 );
memcpy( pabyData+4+i*24+8, &(paoPoints[i].y), 8 );
if( padfZ == nullptr )
memset( pabyData+4+i*24+16, 0, 8 );
else
memcpy( pabyData+4+i*24+16, padfZ + i, 8 );
}
}
else
{
nWords = 2 * nPointCount;
memcpy( pabyData+4, paoPoints, 16 * nPointCount );
}
/* -------------------------------------------------------------------- */
/* Swap if needed. */
/* -------------------------------------------------------------------- */
if( OGR_SWAP( eByteOrder ) )
{
int nCount = CPL_SWAP32( nPointCount );
memcpy( pabyData, &nCount, 4 );
for( int i = 0; i < nWords; i++ )
{
CPL_SWAPDOUBLE( pabyData + 4 + 8 * i );
}
}
return OGRERR_NONE;
}
OGRErr OGRPolygon::importFromWkb( unsigned char * pabyData,
int nBytesAvailable )
{
OGRwkbByteOrder eByteOrder;
int nDataOffset;
if( nBytesAvailable < 21 && nBytesAvailable != -1 )
return OGRERR_NOT_ENOUGH_DATA;
/* -------------------------------------------------------------------- */
/* Get the byte order byte. */
/* -------------------------------------------------------------------- */
eByteOrder = (OGRwkbByteOrder) *pabyData;
CPLAssert( eByteOrder == wkbXDR || eByteOrder == wkbNDR );
/* -------------------------------------------------------------------- */
/* Get the geometry feature type. For now we assume that */
/* geometry type is between 0 and 255 so we only have to fetch */
/* one byte. */
/* -------------------------------------------------------------------- */
#ifdef DEBUG
OGRwkbGeometryType eGeometryType;
if( eByteOrder == wkbNDR )
eGeometryType = (OGRwkbGeometryType) pabyData[1];
else
eGeometryType = (OGRwkbGeometryType) pabyData[4];
CPLAssert( eGeometryType == wkbPolygon );
#endif
/* -------------------------------------------------------------------- */
/* Do we already have some rings? */
/* -------------------------------------------------------------------- */
if( nRingCount != 0 )
{
for( int iRing = 0; iRing < nRingCount; iRing++ )
delete papoRings[iRing];
OGRFree( papoRings );
papoRings = NULL;
}
/* -------------------------------------------------------------------- */
/* Get the ring count. */
/* -------------------------------------------------------------------- */
memcpy( &nRingCount, pabyData + 5, 4 );
if( OGR_SWAP( eByteOrder ) )
nRingCount = CPL_SWAP32(nRingCount);
papoRings = (OGRLinearRing **) OGRMalloc(sizeof(void*) * nRingCount);
nDataOffset = 9;
if( nBytesAvailable != -1 )
nBytesAvailable -= nDataOffset;
/* -------------------------------------------------------------------- */
/* Get the rings. */
/* -------------------------------------------------------------------- */
for( int iRing = 0; iRing < nRingCount; iRing++ )
{
OGRErr eErr;
papoRings[iRing] = new OGRLinearRing();
eErr = papoRings[iRing]->_importFromWkb( eByteOrder,
pabyData + nDataOffset,
nBytesAvailable );
if( eErr != OGRERR_NONE )
{
nRingCount = iRing;
return eErr;
}
if( nBytesAvailable != -1 )
nBytesAvailable -= papoRings[iRing]->_WkbSize();
nDataOffset += papoRings[iRing]->_WkbSize();
}
return OGRERR_NONE;
}
OGRErr OGRLinearRing::_importFromWkb( OGRwkbByteOrder eByteOrder, int b3D,
unsigned char * pabyData,
int nBytesAvailable )
{
if( nBytesAvailable < 4 && nBytesAvailable != -1 )
return OGRERR_NOT_ENOUGH_DATA;
/* -------------------------------------------------------------------- */
/* Get the vertex count. */
/* -------------------------------------------------------------------- */
int nNewNumPoints;
memcpy( &nNewNumPoints, pabyData, 4 );
if( OGR_SWAP( eByteOrder ) )
nNewNumPoints = CPL_SWAP32(nNewNumPoints);
setNumPoints( nNewNumPoints );
if( b3D )
Make3D();
else
Make2D();
/* -------------------------------------------------------------------- */
/* Get the vertices */
/* -------------------------------------------------------------------- */
int i;
if( !b3D )
memcpy( paoPoints, pabyData + 4, 16 * nPointCount );
else
{
for( int i = 0; i < nPointCount; i++ )
{
memcpy( &(paoPoints[i].x), pabyData + 4 + 24 * i, 8 );
memcpy( &(paoPoints[i].y), pabyData + 4 + 24 * i + 8, 8 );
memcpy( padfZ + i, pabyData + 4 + 24 * i + 16, 8 );
}
}
/* -------------------------------------------------------------------- */
/* Byte swap if needed. */
/* -------------------------------------------------------------------- */
if( OGR_SWAP( eByteOrder ) )
{
for( i = 0; i < nPointCount; i++ )
{
CPL_SWAPDOUBLE( &(paoPoints[i].x) );
CPL_SWAPDOUBLE( &(paoPoints[i].y) );
if( b3D )
{
CPL_SWAPDOUBLE( padfZ + i );
}
}
}
return OGRERR_NONE;
}
OGRErr OGRGeometryCollection::importFromWkb( unsigned char * pabyData,
int nSize )
{
OGRwkbByteOrder eByteOrder;
int nDataOffset;
if( nSize < 9 && nSize != -1 )
return OGRERR_NOT_ENOUGH_DATA;
/* -------------------------------------------------------------------- */
/* Get the byte order byte. */
/* -------------------------------------------------------------------- */
eByteOrder = DB2_V72_FIX_BYTE_ORDER((OGRwkbByteOrder) *pabyData);
if (!( eByteOrder == wkbXDR || eByteOrder == wkbNDR ))
return OGRERR_CORRUPT_DATA;
/* -------------------------------------------------------------------- */
/* Get the geometry feature type. For now we assume that */
/* geometry type is between 0 and 255 so we only have to fetch */
/* one byte. */
/* -------------------------------------------------------------------- */
OGRwkbGeometryType eGeometryType;
if( eByteOrder == wkbNDR )
{
eGeometryType = (OGRwkbGeometryType) pabyData[1];
}
else
{
eGeometryType = (OGRwkbGeometryType) pabyData[4];
}
if ( eGeometryType != wkbFlatten(getGeometryType()) )
return OGRERR_CORRUPT_DATA;
/* -------------------------------------------------------------------- */
/* Clear existing Geoms. */
/* -------------------------------------------------------------------- */
empty();
/* -------------------------------------------------------------------- */
/* Get the geometry count. */
/* -------------------------------------------------------------------- */
memcpy( &nGeomCount, pabyData + 5, 4 );
if( OGR_SWAP( eByteOrder ) )
nGeomCount = CPL_SWAP32(nGeomCount);
if (nGeomCount < 0 || nGeomCount > INT_MAX / 9)
{
nGeomCount = 0;
return OGRERR_CORRUPT_DATA;
}
/* Each geometry has a minimum of 9 bytes */
if (nSize != -1 && nSize - 9 < nGeomCount * 9)
{
CPLError( CE_Failure, CPLE_AppDefined,
"Length of input WKB is too small" );
nGeomCount = 0;
return OGRERR_NOT_ENOUGH_DATA;
}
papoGeoms = (OGRGeometry **) VSIMalloc2(sizeof(void*), nGeomCount);
if (nGeomCount != 0 && papoGeoms == NULL)
{
nGeomCount = 0;
return OGRERR_NOT_ENOUGH_MEMORY;
}
nDataOffset = 9;
if( nSize != -1 )
nSize -= nDataOffset;
/* -------------------------------------------------------------------- */
/* Get the Geoms. */
/* -------------------------------------------------------------------- */
for( int iGeom = 0; iGeom < nGeomCount; iGeom++ )
{
OGRErr eErr;
OGRGeometry* poSubGeom = NULL;
eErr = OGRGeometryFactory::
createFromWkb( pabyData + nDataOffset, NULL,
&poSubGeom, nSize );
if( eErr != OGRERR_NONE )
{
nGeomCount = iGeom;
return eErr;
}
OGRwkbGeometryType eSubGeomType = wkbFlatten(poSubGeom->getGeometryType());
if( (eGeometryType == wkbMultiPoint && eSubGeomType != wkbPoint) ||
(eGeometryType == wkbMultiLineString && eSubGeomType != wkbLineString) ||
(eGeometryType == wkbMultiPolygon && eSubGeomType != wkbPolygon) )
{
nGeomCount = iGeom;
CPLDebug("OGR", "Cannot add geometry of type (%d) to geometry of type (%d)",
eSubGeomType, eGeometryType);
delete poSubGeom;
return OGRERR_CORRUPT_DATA;
}
papoGeoms[iGeom] = poSubGeom;
if (papoGeoms[iGeom]->getCoordinateDimension() == 3)
nCoordDimension = 3;
int nSubGeomWkbSize = papoGeoms[iGeom]->WkbSize();
if( nSize != -1 )
nSize -= nSubGeomWkbSize;
nDataOffset += nSubGeomWkbSize;
}
return OGRERR_NONE;
}
OGRErr OGRCurveCollection::exportToWkb( const OGRGeometry* poGeom,
OGRwkbByteOrder eByteOrder,
unsigned char * pabyData,
OGRwkbVariant eWkbVariant ) const
{
int nOffset;
/* -------------------------------------------------------------------- */
/* Set the byte order. */
/* -------------------------------------------------------------------- */
pabyData[0] = DB2_V72_UNFIX_BYTE_ORDER((unsigned char) eByteOrder);
/* -------------------------------------------------------------------- */
/* Set the geometry feature type, ensuring that 3D flag is */
/* preserved. */
/* -------------------------------------------------------------------- */
GUInt32 nGType = poGeom->getIsoGeometryType();
if( eWkbVariant == wkbVariantPostGIS1 )
{
int bIs3D = wkbHasZ((OGRwkbGeometryType)nGType);
nGType = wkbFlatten(nGType);
if( nGType == wkbCurvePolygon )
nGType = POSTGIS15_CURVEPOLYGON;
if( bIs3D )
nGType = (OGRwkbGeometryType)(nGType | wkb25DBitInternalUse); /* yes we explicitly set wkb25DBit */
}
if( eByteOrder == wkbNDR )
nGType = CPL_LSBWORD32( nGType );
else
nGType = CPL_MSBWORD32( nGType );
memcpy( pabyData + 1, &nGType, 4 );
/* -------------------------------------------------------------------- */
/* Copy in the raw data. */
/* -------------------------------------------------------------------- */
if( OGR_SWAP( eByteOrder ) )
{
int nCount;
nCount = CPL_SWAP32( nCurveCount );
memcpy( pabyData+5, &nCount, 4 );
}
else
{
memcpy( pabyData+5, &nCurveCount, 4 );
}
nOffset = 9;
/* ==================================================================== */
/* Serialize each of the Geoms. */
/* ==================================================================== */
for( int iGeom = 0; iGeom < nCurveCount; iGeom++ )
{
papoCurves[iGeom]->exportToWkb( eByteOrder, pabyData + nOffset, eWkbVariant );
nOffset += papoCurves[iGeom]->WkbSize();
}
return OGRERR_NONE;
}
OGRErr OGRGeometryCollection::importFromWkbInternal( unsigned char * pabyData,
int nSize, int nRecLevel )
{
OGRwkbByteOrder eByteOrder;
int nDataOffset;
/* Arbitrary value, but certainly large enough for reasonable usages ! */
if( nRecLevel == 32 )
{
CPLError( CE_Failure, CPLE_AppDefined,
"Too many recursiong level (%d) while parsing WKB geometry.",
nRecLevel );
return OGRERR_CORRUPT_DATA;
}
if( nSize < 9 && nSize != -1 )
return OGRERR_NOT_ENOUGH_DATA;
/* -------------------------------------------------------------------- */
/* Get the byte order byte. */
/* -------------------------------------------------------------------- */
eByteOrder = DB2_V72_FIX_BYTE_ORDER((OGRwkbByteOrder) *pabyData);
if (!( eByteOrder == wkbXDR || eByteOrder == wkbNDR ))
return OGRERR_CORRUPT_DATA;
/* -------------------------------------------------------------------- */
/* Get the geometry feature type. For now we assume that */
/* geometry type is between 0 and 255 so we only have to fetch */
/* one byte. */
/* -------------------------------------------------------------------- */
OGRwkbGeometryType eGeometryType;
if( eByteOrder == wkbNDR )
{
eGeometryType = (OGRwkbGeometryType) pabyData[1];
}
else
{
eGeometryType = (OGRwkbGeometryType) pabyData[4];
}
if ( eGeometryType != wkbFlatten(getGeometryType()) )
return OGRERR_CORRUPT_DATA;
/* -------------------------------------------------------------------- */
/* Clear existing Geoms. */
/* -------------------------------------------------------------------- */
empty();
/* -------------------------------------------------------------------- */
/* Get the geometry count. */
/* -------------------------------------------------------------------- */
memcpy( &nGeomCount, pabyData + 5, 4 );
if( OGR_SWAP( eByteOrder ) )
nGeomCount = CPL_SWAP32(nGeomCount);
if (nGeomCount < 0 || nGeomCount > INT_MAX / 9)
{
nGeomCount = 0;
return OGRERR_CORRUPT_DATA;
}
/* Each geometry has a minimum of 9 bytes */
if (nSize != -1 && nSize - 9 < nGeomCount * 9)
{
CPLError( CE_Failure, CPLE_AppDefined,
"Length of input WKB is too small" );
nGeomCount = 0;
return OGRERR_NOT_ENOUGH_DATA;
}
papoGeoms = (OGRGeometry **) VSIMalloc2(sizeof(void*), nGeomCount);
if (nGeomCount != 0 && papoGeoms == NULL)
{
nGeomCount = 0;
return OGRERR_NOT_ENOUGH_MEMORY;
}
nDataOffset = 9;
if( nSize != -1 )
nSize -= nDataOffset;
/* -------------------------------------------------------------------- */
/* Get the Geoms. */
/* -------------------------------------------------------------------- */
for( int iGeom = 0; iGeom < nGeomCount; iGeom++ )
{
OGRErr eErr;
OGRGeometry* poSubGeom = NULL;
/* Parses sub-geometry */
unsigned char* pabySubData = pabyData + nDataOffset;
if( nSize < 9 && nSize != -1 )
return OGRERR_NOT_ENOUGH_DATA;
OGRwkbByteOrder eSubGeomByteOrder =
DB2_V72_FIX_BYTE_ORDER((OGRwkbByteOrder) *pabySubData);
if( eSubGeomByteOrder != wkbXDR && eSubGeomByteOrder != wkbNDR )
return OGRERR_CORRUPT_DATA;
OGRwkbGeometryType eSubGeomType;
if( eSubGeomByteOrder == wkbNDR )
eSubGeomType = (OGRwkbGeometryType) pabySubData[1];
else
eSubGeomType = (OGRwkbGeometryType) pabySubData[4];
if( eSubGeomType == wkbPoint ||
eSubGeomType == wkbLineString ||
eSubGeomType == wkbPolygon)
{
eErr = OGRGeometryFactory::
createFromWkb( pabySubData, NULL,
&poSubGeom, nSize );
}
else if (eSubGeomType == wkbGeometryCollection ||
eSubGeomType == wkbMultiPolygon ||
eSubGeomType == wkbMultiPoint ||
eSubGeomType == wkbMultiLineString)
{
poSubGeom = OGRGeometryFactory::createGeometry( eSubGeomType );
eErr = ((OGRGeometryCollection*)poSubGeom)->
importFromWkbInternal( pabySubData, nSize, nRecLevel + 1 );
}
else
return OGRERR_UNSUPPORTED_GEOMETRY_TYPE;
if( eErr != OGRERR_NONE )
{
nGeomCount = iGeom;
delete poSubGeom;
return eErr;
}
if( (eGeometryType == wkbMultiPoint && eSubGeomType != wkbPoint) ||
(eGeometryType == wkbMultiLineString && eSubGeomType != wkbLineString) ||
(eGeometryType == wkbMultiPolygon && eSubGeomType != wkbPolygon) )
{
nGeomCount = iGeom;
CPLDebug("OGR", "Cannot add geometry of type (%d) to geometry of type (%d)",
eSubGeomType, eGeometryType);
delete poSubGeom;
return OGRERR_CORRUPT_DATA;
}
papoGeoms[iGeom] = poSubGeom;
if (papoGeoms[iGeom]->getCoordinateDimension() == 3)
nCoordDimension = 3;
int nSubGeomWkbSize = papoGeoms[iGeom]->WkbSize();
if( nSize != -1 )
nSize -= nSubGeomWkbSize;
nDataOffset += nSubGeomWkbSize;
}
return OGRERR_NONE;
}
OGRErr OGRPolygon::importFromWkb( unsigned char * pabyData,
int nSize )
{
OGRwkbByteOrder eByteOrder;
int nDataOffset, b3D;
if( nSize < 9 && nSize != -1 )
return OGRERR_NOT_ENOUGH_DATA;
/* -------------------------------------------------------------------- */
/* Get the byte order byte. */
/* -------------------------------------------------------------------- */
eByteOrder = DB2_V72_FIX_BYTE_ORDER((OGRwkbByteOrder) *pabyData);
if (!( eByteOrder == wkbXDR || eByteOrder == wkbNDR ))
return OGRERR_CORRUPT_DATA;
/* -------------------------------------------------------------------- */
/* Get the geometry feature type. For now we assume that */
/* geometry type is between 0 and 255 so we only have to fetch */
/* one byte. */
/* -------------------------------------------------------------------- */
#ifdef DEBUG
OGRwkbGeometryType eGeometryType;
if( eByteOrder == wkbNDR )
eGeometryType = (OGRwkbGeometryType) pabyData[1];
else
eGeometryType = (OGRwkbGeometryType) pabyData[4];
if( eGeometryType != wkbPolygon )
return OGRERR_CORRUPT_DATA;
#endif
if( eByteOrder == wkbNDR )
b3D = pabyData[4] & 0x80 || pabyData[2] & 0x80;
else
b3D = pabyData[1] & 0x80 || pabyData[3] & 0x80;
if( b3D )
nCoordDimension = 3;
else
nCoordDimension = 2;
/* -------------------------------------------------------------------- */
/* Do we already have some rings? */
/* -------------------------------------------------------------------- */
if( nRingCount != 0 )
{
for( int iRing = 0; iRing < nRingCount; iRing++ )
delete papoRings[iRing];
OGRFree( papoRings );
papoRings = NULL;
}
/* -------------------------------------------------------------------- */
/* Get the ring count. */
/* -------------------------------------------------------------------- */
memcpy( &nRingCount, pabyData + 5, 4 );
if( OGR_SWAP( eByteOrder ) )
nRingCount = CPL_SWAP32(nRingCount);
if (nRingCount < 0 || nRingCount > INT_MAX / 4)
{
nRingCount = 0;
return OGRERR_CORRUPT_DATA;
}
/* Each ring has a minimum of 4 bytes (point count) */
if (nSize != -1 && nSize - 9 < nRingCount * 4)
{
CPLError( CE_Failure, CPLE_AppDefined,
"Length of input WKB is too small" );
nRingCount = 0;
return OGRERR_NOT_ENOUGH_DATA;
}
papoRings = (OGRLinearRing **) VSIMalloc2(sizeof(void*), nRingCount);
if (nRingCount != 0 && papoRings == NULL)
{
nRingCount = 0;
return OGRERR_NOT_ENOUGH_MEMORY;
}
nDataOffset = 9;
if( nSize != -1 )
nSize -= nDataOffset;
/* -------------------------------------------------------------------- */
/* Get the rings. */
/* -------------------------------------------------------------------- */
for( int iRing = 0; iRing < nRingCount; iRing++ )
{
OGRErr eErr;
papoRings[iRing] = new OGRLinearRing();
eErr = papoRings[iRing]->_importFromWkb( eByteOrder, b3D,
pabyData + nDataOffset,
nSize );
if( eErr != OGRERR_NONE )
{
delete papoRings[iRing];
nRingCount = iRing;
return eErr;
}
if( nSize != -1 )
nSize -= papoRings[iRing]->_WkbSize( b3D );
nDataOffset += papoRings[iRing]->_WkbSize( b3D );
}
return OGRERR_NONE;
}
OGRErr OGRPoint::importFromWkb( unsigned char * pabyData,
int nSize,
OGRwkbVariant eWkbVariant )
{
OGRwkbByteOrder eByteOrder = wkbNDR;
flags = 0;
OGRErr eErr =
importPreambuleFromWkb( pabyData, nSize, eByteOrder, eWkbVariant );
pabyData += 5;
if( eErr != OGRERR_NONE )
return eErr;
if( nSize != -1 )
{
if( (nSize < 37) && ((flags & OGR_G_3D) && (flags & OGR_G_MEASURED)) )
return OGRERR_NOT_ENOUGH_DATA;
else if( (nSize < 29) && ((flags & OGR_G_3D) ||
(flags & OGR_G_MEASURED)) )
return OGRERR_NOT_ENOUGH_DATA;
else if( nSize < 21 )
return OGRERR_NOT_ENOUGH_DATA;
}
/* -------------------------------------------------------------------- */
/* Get the vertex. */
/* -------------------------------------------------------------------- */
memcpy( &x, pabyData, 8 );
pabyData += 8;
memcpy( &y, pabyData, 8 );
pabyData += 8;
if( OGR_SWAP( eByteOrder ) )
{
CPL_SWAPDOUBLE( &x );
CPL_SWAPDOUBLE( &y );
}
if( flags & OGR_G_3D )
{
memcpy( &z, pabyData, 8 );
pabyData += 8;
if( OGR_SWAP( eByteOrder ) )
CPL_SWAPDOUBLE( &z );
}
else
{
z = 0;
}
if( flags & OGR_G_MEASURED )
{
memcpy( &m, pabyData, 8 );
/*pabyData += 8; */
if( OGR_SWAP( eByteOrder ) )
{
CPL_SWAPDOUBLE( &m );
}
}
else
{
m = 0;
}
// Detect coordinates are not NaN --> NOT EMPTY.
if( !(CPLIsNan(x) && CPLIsNan(y)) )
flags |= OGR_G_NOT_EMPTY_POINT;
return OGRERR_NONE;
}
OGRErr OGRPoint::importFromWkb( unsigned char * pabyData,
int nSize )
{
OGRwkbByteOrder eByteOrder;
if( nSize < 21 && nSize != -1 )
return OGRERR_NOT_ENOUGH_DATA;
/* -------------------------------------------------------------------- */
/* Get the byte order byte. */
/* -------------------------------------------------------------------- */
eByteOrder = DB2_V72_FIX_BYTE_ORDER((OGRwkbByteOrder) *pabyData);
if (!( eByteOrder == wkbXDR || eByteOrder == wkbNDR ))
return OGRERR_CORRUPT_DATA;
/* -------------------------------------------------------------------- */
/* Get the geometry feature type. For now we assume that */
/* geometry type is between 0 and 255 so we only have to fetch */
/* one byte. */
/* -------------------------------------------------------------------- */
OGRwkbGeometryType eGeometryType;
int bIs3D;
if( eByteOrder == wkbNDR )
{
eGeometryType = (OGRwkbGeometryType) pabyData[1];
bIs3D = pabyData[4] & 0x80 || pabyData[2] & 0x80;
}
else
{
eGeometryType = (OGRwkbGeometryType) pabyData[4];
bIs3D = pabyData[1] & 0x80 || pabyData[3] & 0x80;
}
if( eGeometryType != wkbPoint )
return OGRERR_CORRUPT_DATA;
/* -------------------------------------------------------------------- */
/* Get the vertex. */
/* -------------------------------------------------------------------- */
memcpy( &x, pabyData + 5, 16 );
if( OGR_SWAP( eByteOrder ) )
{
CPL_SWAPDOUBLE( &x );
CPL_SWAPDOUBLE( &y );
}
if( bIs3D )
{
memcpy( &z, pabyData + 5 + 16, 8 );
if( OGR_SWAP( eByteOrder ) )
{
CPL_SWAPDOUBLE( &z );
}
nCoordDimension = 3;
}
else
{
z = 0;
nCoordDimension = 2;
}
return OGRERR_NONE;
}
//! @cond Doxygen_Suppress
OGRErr OGRLinearRing::_importFromWkb( OGRwkbByteOrder eByteOrder, int _flags,
const unsigned char * pabyData,
int nBytesAvailable,
int& nBytesConsumedOut )
{
nBytesConsumedOut = -1;
if( nBytesAvailable < 4 && nBytesAvailable != -1 )
return OGRERR_NOT_ENOUGH_DATA;
/* -------------------------------------------------------------------- */
/* Get the vertex count. */
/* -------------------------------------------------------------------- */
int nNewNumPoints = 0;
memcpy( &nNewNumPoints, pabyData, 4 );
if( OGR_SWAP( eByteOrder ) )
nNewNumPoints = CPL_SWAP32(nNewNumPoints);
// Check if the wkb stream buffer is big enough to store
// fetched number of points.
// 16, 24, or 32 - size of point structure.
int nPointSize = 0;
if( (_flags & OGR_G_3D) && (_flags & OGR_G_MEASURED) )
nPointSize = 32;
else if( (_flags & OGR_G_3D) || (_flags & OGR_G_MEASURED) )
nPointSize = 24;
else
nPointSize = 16;
if( nNewNumPoints < 0 || nNewNumPoints > INT_MAX / nPointSize )
return OGRERR_CORRUPT_DATA;
int nBufferMinSize = nPointSize * nNewNumPoints;
if( nBytesAvailable != -1 && nBufferMinSize > nBytesAvailable - 4 )
{
CPLError( CE_Failure, CPLE_AppDefined,
"Length of input WKB is too small" );
return OGRERR_NOT_ENOUGH_DATA;
}
// (Re)Allocation of paoPoints buffer.
setNumPoints( nNewNumPoints, FALSE );
if( _flags & OGR_G_3D )
Make3D();
else
Make2D();
if( _flags & OGR_G_MEASURED )
AddM();
else
RemoveM();
nBytesConsumedOut = 4 + nPointCount * nPointSize;
/* -------------------------------------------------------------------- */
/* Get the vertices */
/* -------------------------------------------------------------------- */
if( (flags & OGR_G_3D) && (flags & OGR_G_MEASURED) )
{
for( int i = 0; i < nPointCount; i++ )
{
memcpy( &(paoPoints[i].x), pabyData + 4 + 32 * i, 8 );
memcpy( &(paoPoints[i].y), pabyData + 4 + 32 * i + 8, 8 );
memcpy( padfZ + i, pabyData + 4 + 32 * i + 16, 8 );
memcpy( padfM + i, pabyData + 4 + 32 * i + 24, 8 );
}
}
else if( flags & OGR_G_MEASURED )
{
for( int i = 0; i < nPointCount; i++ )
{
memcpy( &(paoPoints[i].x), pabyData + 4 + 24 * i, 8 );
memcpy( &(paoPoints[i].y), pabyData + 4 + 24 * i + 8, 8 );
memcpy( padfM + i, pabyData + 4 + 24 * i + 16, 8 );
}
}
else if( flags & OGR_G_3D )
{
for( int i = 0; i < nPointCount; i++ )
{
memcpy( &(paoPoints[i].x), pabyData + 4 + 24 * i, 8 );
memcpy( &(paoPoints[i].y), pabyData + 4 + 24 * i + 8, 8 );
memcpy( padfZ + i, pabyData + 4 + 24 * i + 16, 8 );
}
}
else
{
memcpy( paoPoints, pabyData + 4, 16 * nPointCount );
}
/* -------------------------------------------------------------------- */
/* Byte swap if needed. */
/* -------------------------------------------------------------------- */
if( OGR_SWAP( eByteOrder ) )
{
for( int i = 0; i < nPointCount; i++ )
{
CPL_SWAPDOUBLE( &(paoPoints[i].x) );
CPL_SWAPDOUBLE( &(paoPoints[i].y) );
if( flags & OGR_G_3D )
{
CPL_SWAPDOUBLE( padfZ + i );
}
if( flags & OGR_G_MEASURED )
{
CPL_SWAPDOUBLE( padfM + i );
}
}
}
return OGRERR_NONE;
}
OGRErr OGRPolygon::exportToWkb( OGRwkbByteOrder eByteOrder,
unsigned char * pabyData,
OGRwkbVariant eWkbVariant ) const
{
/* -------------------------------------------------------------------- */
/* Set the byte order. */
/* -------------------------------------------------------------------- */
pabyData[0] =
DB2_V72_UNFIX_BYTE_ORDER(static_cast<unsigned char>(eByteOrder));
/* -------------------------------------------------------------------- */
/* Set the geometry feature type. */
/* -------------------------------------------------------------------- */
GUInt32 nGType = getGeometryType();
if( eWkbVariant == wkbVariantPostGIS1 )
{
nGType = wkbFlatten(nGType);
if( Is3D() )
// Explicitly set wkb25DBit.
nGType =
static_cast<OGRwkbGeometryType>(nGType | wkb25DBitInternalUse);
if( IsMeasured() )
nGType = static_cast<OGRwkbGeometryType>(nGType | 0x40000000);
}
else if( eWkbVariant == wkbVariantIso )
nGType = getIsoGeometryType();
if( OGR_SWAP( eByteOrder ) )
{
nGType = CPL_SWAP32(nGType);
}
memcpy( pabyData + 1, &nGType, 4 );
/* -------------------------------------------------------------------- */
/* Copy in the raw data. */
/* -------------------------------------------------------------------- */
if( OGR_SWAP( eByteOrder ) )
{
const int nCount = CPL_SWAP32( oCC.nCurveCount );
memcpy( pabyData+5, &nCount, 4 );
}
else
{
memcpy( pabyData+5, &oCC.nCurveCount, 4 );
}
/* ==================================================================== */
/* Serialize each of the rings. */
/* ==================================================================== */
int nOffset = 9;
for( int iRing = 0; iRing < oCC.nCurveCount; iRing++ )
{
OGRLinearRing* poLR = (OGRLinearRing*) oCC.papoCurves[iRing];
poLR->_exportToWkb( eByteOrder, flags,
pabyData + nOffset );
nOffset += poLR->_WkbSize( flags );
}
return OGRERR_NONE;
}
OGRErr OGRPoint::exportToWkb( OGRwkbByteOrder eByteOrder,
unsigned char * pabyData,
OGRwkbVariant eWkbVariant ) const
{
/* -------------------------------------------------------------------- */
/* Set the byte order. */
/* -------------------------------------------------------------------- */
pabyData[0] =
DB2_V72_UNFIX_BYTE_ORDER(static_cast<unsigned char>(eByteOrder));
pabyData += 1;
/* -------------------------------------------------------------------- */
/* Set the geometry feature type. */
/* -------------------------------------------------------------------- */
GUInt32 nGType = getGeometryType();
if( eWkbVariant == wkbVariantPostGIS1 )
{
nGType = wkbFlatten(nGType);
if( Is3D() )
// Explicitly set wkb25DBit.
nGType =
static_cast<OGRwkbGeometryType>(nGType | wkb25DBitInternalUse);
if( IsMeasured() )
nGType = static_cast<OGRwkbGeometryType>(nGType | 0x40000000);
}
else if( eWkbVariant == wkbVariantIso )
{
nGType = getIsoGeometryType();
}
if( eByteOrder == wkbNDR )
nGType = CPL_LSBWORD32( nGType );
else
nGType = CPL_MSBWORD32( nGType );
memcpy( pabyData, &nGType, 4 );
pabyData += 4;
/* -------------------------------------------------------------------- */
/* Copy in the raw data. Swap if needed. */
/* -------------------------------------------------------------------- */
if( IsEmpty() && eWkbVariant == wkbVariantIso )
{
const double dNan = std::numeric_limits<double>::quiet_NaN();
memcpy( pabyData, &dNan, 8 );
if( OGR_SWAP( eByteOrder ) )
CPL_SWAPDOUBLE( pabyData );
pabyData += 8;
memcpy( pabyData, &dNan, 8 );
if( OGR_SWAP( eByteOrder ) )
CPL_SWAPDOUBLE( pabyData );
pabyData += 8;
if( flags & OGR_G_3D ) {
memcpy( pabyData, &dNan, 8 );
if( OGR_SWAP( eByteOrder ) )
CPL_SWAPDOUBLE( pabyData );
pabyData += 8;
}
if( flags & OGR_G_MEASURED ) {
memcpy( pabyData, &dNan, 8 );
if( OGR_SWAP( eByteOrder ) )
CPL_SWAPDOUBLE( pabyData );
}
}
else
{
memcpy( pabyData, &x, 8 );
if( OGR_SWAP( eByteOrder ) )
CPL_SWAPDOUBLE( pabyData );
pabyData += 8;
memcpy( pabyData, &y, 8 );
if( OGR_SWAP( eByteOrder ) )
CPL_SWAPDOUBLE( pabyData );
pabyData += 8;
if( flags & OGR_G_3D ) {
memcpy( pabyData, &z, 8 );
if( OGR_SWAP( eByteOrder ) )
CPL_SWAPDOUBLE( pabyData );
pabyData += 8;
}
if( flags & OGR_G_MEASURED )
{
memcpy( pabyData, &m, 8 );
if( OGR_SWAP( eByteOrder ) )
CPL_SWAPDOUBLE( pabyData );
}
}
return OGRERR_NONE;
}