Function msSLDParseSLD

mapogcsld.c:506–616

/ msSLDParseSLD */ / Parse the sld document into layers : for each named layer */ there is one mapserver layer created with approproate */ classes and styles. */ Returns an array of mapserver layers. The pnLayres if */ provided will indicate the size of the returned array. */ /

/*      provided will indicate the size of the returned array.          */
/************************************************************************/
layerObj  *msSLDParseSLD(mapObj *map, char *psSLDXML, int *pnLayers)
{
    CPLXMLNode *psRoot = NULL;
    CPLXMLNode *psSLD, *psNamedLayer, *psChild, *psName;
    layerObj *pasLayers = NULL;
    int iLayer = 0;
    int nLayers = 0;


    if (map == NULL || psSLDXML == NULL || strlen(psSLDXML) <= 0 ||
        (strstr(psSLDXML, "StyledLayerDescriptor") == NULL))
    {
        msSetError(MS_WMSERR, "Invalid SLD document", "");
        return NULL;
    }

    psRoot = CPLParseXMLString(psSLDXML);
    if( psRoot == NULL)
    {
        msSetError(MS_WMSERR, "Invalid SLD document : %s", "", psSLDXML);
        return NULL;
    }

    /* strip namespaces ogc and sld and gml */
    CPLStripXMLNamespace(psRoot, "ogc", 1); 
    CPLStripXMLNamespace(psRoot, "sld", 1); 
    CPLStripXMLNamespace(psRoot, "gml", 1); 
    CPLStripXMLNamespace(psRoot, "se", 1); 
    

/* -------------------------------------------------------------------- */
/*      get the root element (Filter).                                  */
/* -------------------------------------------------------------------- */
    psChild = psRoot;
    psSLD = NULL;
     
    while( psChild != NULL )
    {
        if (psChild->eType == CXT_Element &&
            EQUAL(psChild->pszValue,"StyledLayerDescriptor"))
        {
            psSLD = psChild;
            break;
        }
        else
          psChild = psChild->psNext;
    }

    if (!psSLD)
    {
        msSetError(MS_WMSERR, "Invalid SLD document : %s", "", psSLDXML);
        return NULL;
    }

/* -------------------------------------------------------------------- */
/*      Parse the named layers.                                         */
/* -------------------------------------------------------------------- */
    psNamedLayer = CPLGetXMLNode(psSLD, "NamedLayer");