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mapogcsld.c
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mapogcsld.c
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/**********************************************************************
* $Id$
*
* Project: MapServer
* Purpose: OGC SLD implementation
* Author: Y. Assefa, DM Solutions Group (assefa@dmsolutions.ca)
*
**********************************************************************
* Copyright (c) 2003, Y. Assefa, DM Solutions Group Inc
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies of this Software or works derived from this Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
****************************************************************************/
#include "mapogcsld.h"
#include "mapogcfilter.h"
#include "mapserver.h"
#ifdef USE_OGR
#include "cpl_string.h"
#endif
MS_CVSID("$Id$")
#define SLD_LINE_SYMBOL_NAME "sld_line_symbol"
#define SLD_LINE_SYMBOL_DASH_NAME "sld_line_symbol_dash"
#define SLD_MARK_SYMBOL_SQUARE "sld_mark_symbol_square"
#define SLD_MARK_SYMBOL_SQUARE_FILLED "sld_mark_symbol_square_filled"
#define SLD_MARK_SYMBOL_CIRCLE "sld_mark_symbol_circle"
#define SLD_MARK_SYMBOL_CIRCLE_FILLED "sld_mark_symbol_circle_filled"
#define SLD_MARK_SYMBOL_TRIANGLE "sld_mark_symbol_triangle"
#define SLD_MARK_SYMBOL_TRIANGLE_FILLED "sld_mark_symbol_triangle_filled"
#define SLD_MARK_SYMBOL_STAR "sld_mark_symbol_star"
#define SLD_MARK_SYMBOL_STAR_FILLED "sld_mark_symbol_star_filled"
#define SLD_MARK_SYMBOL_CROSS "sld_mark_symbol_cross"
#define SLD_MARK_SYMBOL_CROSS_FILLED "sld_mark_symbol_cross_filled"
#define SLD_MARK_SYMBOL_X "sld_mark_symbol_x"
#define SLD_MARK_SYMBOL_X_FILLED "sld_mark_symbol_x_filled"
/************************************************************************/
/* msSLDApplySLDURL */
/* */
/* Use the SLD document given through a URL and apply the SLD */
/* on the map. Layer name and Named Layer's name parameter are */
/* used to do the match. */
/************************************************************************/
int msSLDApplySLDURL(mapObj *map, char *szURL, int iLayer,
char *pszStyleLayerName)
{
#ifdef USE_OGR
/* needed for libcurl function msHTTPGetFile in maphttp.c */
#if defined(USE_WMS_LYR) || defined(USE_WFS_LYR)
char *pszSLDTmpFile = NULL;
int status = 0;
char *pszSLDbuf=NULL;
FILE *fp = NULL;
int nStatus = MS_FAILURE;
if (map && szURL)
{
pszSLDTmpFile = msTmpFile(map->mappath, map->web.imagepath, "sld.xml");
if (pszSLDTmpFile == NULL)
{
#ifndef _WIN32
pszSLDTmpFile = msTmpFile(NULL, "/tmp/", "sld.xml" );
#else
pszSLDTmpFile = msTmpFile(NULL, "C:\\", "sld.xml");
#endif
}
if (msHTTPGetFile(szURL, pszSLDTmpFile, &status,-1, 0, 0) == MS_SUCCESS)
{
if ((fp = fopen(pszSLDTmpFile, "rb")) != NULL)
{
int nBufsize=0;
fseek(fp, 0, SEEK_END);
nBufsize = ftell(fp);
rewind(fp);
pszSLDbuf = (char*)malloc((nBufsize+1)*sizeof(char));
fread(pszSLDbuf, 1, nBufsize, fp);
fclose(fp);
pszSLDbuf[nBufsize] = '\0';
unlink(pszSLDTmpFile);
}
}
else
{
msSetError(MS_WMSERR, "Could not open SLD %s and save it in temporary file %s. Please make sure that the sld url is valid and that imagepath and imageurl are set properly in the map file", "msSLDApplySLDURL", szURL, pszSLDTmpFile);
}
if (pszSLDbuf)
nStatus = msSLDApplySLD(map, pszSLDbuf, iLayer, pszStyleLayerName);
}
return nStatus;
#else
msSetError(MS_MISCERR, "WMS/WFS client support is not enabled .", "msSLDApplySLDURL()");
return(MS_FAILURE);
#endif
#else
/* ------------------------------------------------------------------
* OGR Support not included...
* ------------------------------------------------------------------ */
msSetError(MS_MISCERR, "OGR support is not available.", "msSLDApplySLDURL()");
return(MS_FAILURE);
#endif /* USE_OGR */
}
/************************************************************************/
/* msSLDApplySLD */
/* */
/* Parses the SLD into array of layers. Go through the map and */
/* compare the SLD layers and the map layers using the name. If */
/* they have the same name, copy the classes asscoaited with */
/* the SLD layers onto the map layers. */
/************************************************************************/
int msSLDApplySLD(mapObj *map, char *psSLDXML, int iLayer,
char *pszStyleLayerName)
{
#if defined(USE_WMS_SVR) || defined (USE_WFS_SVR) || defined (USE_WCS_SVR) || defined(USE_SOS_SVR)
#ifdef USE_OGR
int nLayers = 0;
layerObj *pasLayers = NULL;
int i, j, k, z, iClass;
int bUseSpecificLayer = 0;
int bSuccess =0;
const char *pszTmp = NULL;
int bFreeTemplate = 0;
int nLayerStatus = 0;
/*const char *pszSLDNotSupported = NULL;*/
char *tmpfilename = NULL;
const char *pszFullName = NULL;
char szTmp[256];
char *pszTmp1=NULL;
char *pszTmp2 = NULL;
pasLayers = msSLDParseSLD(map, psSLDXML, &nLayers);
if (pasLayers && nLayers > 0)
{
for (i=0; i<map->numlayers; i++)
{
if (iLayer >=0 && iLayer< map->numlayers)
{
i = iLayer;
bUseSpecificLayer = 1;
}
/* compare layer name to wms_name as well */
pszTmp = msOWSLookupMetadata(&(GET_LAYER(map, i)->metadata), "MO", "name");
for (j=0; j<nLayers; j++)
{
/* -------------------------------------------------------------------- */
/* copy : - class */
/* - layer's labelitem */
/* -------------------------------------------------------------------- */
if ((pasLayers[j].name && pszStyleLayerName == NULL &&
((strcasecmp(GET_LAYER(map, i)->name, pasLayers[j].name) == 0 ||
(pszTmp && strcasecmp(pszTmp, pasLayers[j].name) == 0))||
(GET_LAYER(map, i)->group &&
strcasecmp(GET_LAYER(map, i)->group, pasLayers[j].name) == 0))) ||
(bUseSpecificLayer && pszStyleLayerName && pasLayers[j].name &&
strcasecmp(pasLayers[j].name, pszStyleLayerName) == 0))
{
bSuccess =1;
#ifdef notdef
/*this is a test code if we decide to flag some layers as not supporting SLD*/
pszSLDNotSupported = msOWSLookupMetadata(&(GET_LAYER(map, i)->metadata), "M", "SLD_NOT_SUPPORTED");
if (pszSLDNotSupported)
{
msSetError(MS_WMSERR, "Layer %s does not support SLD", "msSLDApplySLD", pasLayers[j].name);
return MS_FAILURE;
}
#endif
if ( pasLayers[j].numclasses > 0)
{
GET_LAYER(map, i)->type = pasLayers[j].type;
/* TODO: Setting numclasses=0 here results in leaking the contents of any pre-existing classes!?! */
GET_LAYER(map, i)->numclasses = 0;
/*unset the classgroup on the layer if it was set. This allows the layer to render
with all the classes defined in the SLD*/
if (GET_LAYER(map, i)->classgroup)
msFree(GET_LAYER(map, i)->classgroup);
GET_LAYER(map, i)->classgroup = NULL;
iClass = 0;
for (k=0; k < pasLayers[j].numclasses; k++)
{
if (msGrowLayerClasses(GET_LAYER(map, i)) == NULL)
return MS_FAILURE;
initClass(GET_LAYER(map, i)->class[iClass]);
msCopyClass(GET_LAYER(map, i)->class[iClass],
pasLayers[j].class[k], NULL);
GET_LAYER(map, i)->class[iClass]->layer = GET_LAYER(map, i);
GET_LAYER(map, i)->class[iClass]->type = GET_LAYER(map, i)->type;
GET_LAYER(map, i)->numclasses++;
/*aliases may have been used as part of the sld text symbolizer for
label element. Try to process it if that is the case #3114*/
if (msLayerOpen(GET_LAYER(map, i)) == MS_SUCCESS &&
msLayerGetItems(GET_LAYER(map, i)) == MS_SUCCESS)
{
if (GET_LAYER(map, i)->class[iClass]->text.string)
{
for(z=0; z<GET_LAYER(map, i)->numitems; z++)
{
if (!GET_LAYER(map, i)->items[z] || strlen(GET_LAYER(map, i)->items[z]) <= 0)
continue;
sprintf(szTmp, "%s_alias", GET_LAYER(map, i)->items[z]);
pszFullName = msOWSLookupMetadata(&(GET_LAYER(map, i)->metadata), "G", szTmp);
pszTmp1 = strdup( GET_LAYER(map, i)->class[iClass]->text.string);
if (pszFullName != NULL && (strstr(pszTmp1, pszFullName) != NULL))
{
char *tmpstr1= NULL;
tmpstr1 = msReplaceSubstring(pszTmp1, pszFullName, GET_LAYER(map, i)->items[z]);
pszTmp2 = (char *)malloc(sizeof(char)*(strlen(tmpstr1)+3));
sprintf(pszTmp2,"(%s)",tmpstr1);
msLoadExpressionString(&(GET_LAYER(map, i)->class[iClass]->text), pszTmp2);
msFree(pszTmp2);
}
msFree(pszTmp1);
}
}
}
iClass++;
}
}
else
{
/*this is probably an SLD that uses Named styles*/
if (pasLayers[j].classgroup)
{
for (k=0; k<GET_LAYER(map, i)->numclasses; k++)
{
if (GET_LAYER(map, i)->class[k]->group &&
strcasecmp(GET_LAYER(map, i)->class[k]->group,
pasLayers[j].classgroup) == 0)
break;
}
if (k < GET_LAYER(map, i)->numclasses)
{
if ( GET_LAYER(map, i)->classgroup)
msFree( GET_LAYER(map, i)->classgroup);
GET_LAYER(map, i)->classgroup = strdup(pasLayers[j].classgroup);
}
else
{
/* TODO we throw an exception ?*/
}
}
}
if (pasLayers[j].labelitem)
{
if (GET_LAYER(map, i)->labelitem)
free(GET_LAYER(map, i)->labelitem);
GET_LAYER(map, i)->labelitem = strdup(pasLayers[j].labelitem);
}
if (pasLayers[j].classitem)
{
if (GET_LAYER(map, i)->classitem)
free(GET_LAYER(map, i)->classitem);
GET_LAYER(map, i)->classitem = strdup(pasLayers[j].classitem);
}
/* opacity for sld raster */
if (GET_LAYER(map, i)->type == MS_LAYER_RASTER &&
pasLayers[j].opacity != -1)
GET_LAYER(map, i)->opacity = pasLayers[j].opacity;
/* mark as auto-generate SLD */
if (GET_LAYER(map, i)->connectiontype == MS_WMS)
msInsertHashTable(&(GET_LAYER(map, i)->metadata),
"wms_sld_body", "auto" );
/* ==================================================================== */
/* if the SLD contained a spatial feature, the layerinfo */
/* parameter contains the node. Extract it and do a query on */
/* the layer. Insert also a metadata that will be used when */
/* rendering the final image. */
/* ==================================================================== */
if (pasLayers[j].layerinfo &&
(GET_LAYER(map, i)->type == MS_LAYER_POINT ||
GET_LAYER(map, i)->type == MS_LAYER_LINE ||
GET_LAYER(map, i)->type == MS_LAYER_POLYGON ||
GET_LAYER(map, i)->type == MS_LAYER_ANNOTATION ||
GET_LAYER(map, i)->type == MS_LAYER_TILEINDEX))
{
FilterEncodingNode *psNode = NULL;
msInsertHashTable(&(GET_LAYER(map, i)->metadata),
"tmp_wms_sld_query", "true" );
psNode = (FilterEncodingNode *)pasLayers[j].layerinfo;
/* -------------------------------------------------------------------- */
/* set the template on the classes so that the query works */
/* using classes. If there are no classes, set it at the layer level.*/
/* -------------------------------------------------------------------- */
if (GET_LAYER(map, i)->numclasses > 0)
{
for (k=0; k<GET_LAYER(map, i)->numclasses; k++)
{
if (!GET_LAYER(map, i)->class[k]->template)
GET_LAYER(map, i)->class[k]->template = strdup("ttt.html");
}
}
else if (!GET_LAYER(map, i)->template)
{
bFreeTemplate = 1;
GET_LAYER(map, i)->template = strdup("ttt.html");
}
nLayerStatus = GET_LAYER(map, i)->status;
GET_LAYER(map, i)->status = MS_ON;
FLTApplyFilterToLayer(psNode, map,
GET_LAYER(map, i)->index,
!FLTIsSimpleFilter(psNode));
GET_LAYER(map, i)->status = nLayerStatus;
FLTFreeFilterEncodingNode(psNode);
if ( bFreeTemplate)
{
free(GET_LAYER(map, i)->template);
GET_LAYER(map, i)->template = NULL;
}
}
break;
}
}
if (bUseSpecificLayer)
break;
}
}
if(map->debug == MS_DEBUGLEVEL_VVV)
{
tmpfilename = msTmpFile(map->mappath, map->web.imagepath, "_sld.map");
if (tmpfilename == NULL)
{
#ifndef _WIN32
tmpfilename = msTmpFile(NULL, "/tmp/", "_sld.map" );
#else
tmpfilename = msTmpFile(NULL, "C:\\", "_sld.map");
#endif
}
if (tmpfilename)
{
msSaveMap(map,tmpfilename);
msDebug("msApplySLD(): Map file after SLD was applied %s", tmpfilename);
msFree(tmpfilename);
}
}
return MS_SUCCESS;
#else
/* ------------------------------------------------------------------
* OGR Support not included...
* ------------------------------------------------------------------ */
msSetError(MS_MISCERR, "OGR support is not available.", "msSLDApplySLD()");
return(MS_FAILURE);
#endif /* USE_OGR */
#else
msSetError(MS_MISCERR, "OWS support is not available.",
"msSLDApplySLD()");
return(MS_FAILURE);
#endif
}
#ifdef USE_OGR
/************************************************************************/
/* 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. */
/************************************************************************/
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");
while (psNamedLayer)
{
if (!psNamedLayer->pszValue ||
strcasecmp(psNamedLayer->pszValue, "NamedLayer") != 0)
{
psNamedLayer = psNamedLayer->psNext;
continue;
}
psNamedLayer = psNamedLayer->psNext;
nLayers++;
}
if (nLayers > 0)
pasLayers = (layerObj *)malloc(sizeof(layerObj)*nLayers);
else
return NULL;
psNamedLayer = CPLGetXMLNode(psSLD, "NamedLayer");
if (psNamedLayer)
{
iLayer = 0;
while (psNamedLayer)
{
if (!psNamedLayer->pszValue ||
strcasecmp(psNamedLayer->pszValue, "NamedLayer") != 0)
{
psNamedLayer = psNamedLayer->psNext;
continue;
}
psName = CPLGetXMLNode(psNamedLayer, "Name");
initLayer(&pasLayers[iLayer], map);
if (psName && psName->psChild && psName->psChild->pszValue)
pasLayers[iLayer].name = strdup(psName->psChild->pszValue);
msSLDParseNamedLayer(psNamedLayer, &pasLayers[iLayer]);
psNamedLayer = psNamedLayer->psNext;
iLayer++;
}
}
if (pnLayers)
*pnLayers = nLayers;
if (psRoot)
CPLDestroyXMLNode(psRoot);
return pasLayers;
}
/************************************************************************/
/* _SLDApplyRuleValues */
/* */
/* Utility function to set the scale, title/name for the */
/* classes created by a Rule. */
/************************************************************************/
void _SLDApplyRuleValues(CPLXMLNode *psRule, layerObj *psLayer,
int nNewClasses)
{
int i=0;
CPLXMLNode *psMinScale=NULL, *psMaxScale=NULL;
CPLXMLNode *psName=NULL, *psTitle=NULL;
double dfMinScale=0, dfMaxScale=0;
char *pszName=NULL, *pszTitle=NULL;
if (psRule && psLayer && nNewClasses > 0)
{
/* -------------------------------------------------------------------- */
/* parse minscale and maxscale. */
/* -------------------------------------------------------------------- */
psMinScale = CPLGetXMLNode(psRule,
"MinScaleDenominator");
if (psMinScale && psMinScale->psChild &&
psMinScale->psChild->pszValue)
dfMinScale = atof(psMinScale->psChild->pszValue);
psMaxScale = CPLGetXMLNode(psRule,
"MaxScaleDenominator");
if (psMaxScale && psMaxScale->psChild &&
psMaxScale->psChild->pszValue)
dfMaxScale = atof(psMaxScale->psChild->pszValue);
/* -------------------------------------------------------------------- */
/* parse name and title. */
/* -------------------------------------------------------------------- */
psName = CPLGetXMLNode(psRule, "Name");
if (psName && psName->psChild &&
psName->psChild->pszValue)
pszName = psName->psChild->pszValue;
psTitle = CPLGetXMLNode(psRule, "Title");
if (psTitle && psTitle->psChild &&
psTitle->psChild->pszValue)
pszTitle = psTitle->psChild->pszValue;
/* -------------------------------------------------------------------- */
/* set the scale to all the classes created by the rule. */
/* -------------------------------------------------------------------- */
if (dfMinScale > 0 || dfMaxScale > 0)
{
for (i=0; i<nNewClasses; i++)
{
if (dfMinScale > 0)
psLayer->class[psLayer->numclasses-1-i]->minscaledenom = dfMinScale;
if (dfMaxScale)
psLayer->class[psLayer->numclasses-1-i]->maxscaledenom = dfMaxScale;
}
}
/* -------------------------------------------------------------------- */
/* set name and title to the classes created by the rule. */
/* -------------------------------------------------------------------- */
for (i=0; i<nNewClasses; i++)
{
if (!psLayer->class[psLayer->numclasses-1-i]->name)
{
if (pszName)
psLayer->class[psLayer->numclasses-1-i]->name = strdup(pszName);
else if (pszTitle)
psLayer->class[psLayer->numclasses-1-i]->name = strdup(pszTitle);
else
psLayer->class[psLayer->numclasses-1-i]->name = strdup("Unknown");
}
}
if (pszTitle)
{
for (i=0; i<nNewClasses; i++)
{
psLayer->class[psLayer->numclasses-1-i]->title =
strdup(pszTitle);
}
}
}
}
/************************************************************************/
/* msSLDParseNamedLayer */
/* */
/* Parse NamedLayer root. */
/************************************************************************/
void msSLDParseNamedLayer(CPLXMLNode *psRoot, layerObj *psLayer)
{
CPLXMLNode *psFeatureTypeStyle, *psRule, *psUserStyle;
CPLXMLNode *psSLDName = NULL, *psNamedStyle=NULL;
CPLXMLNode *psElseFilter = NULL, *psFilter=NULL;
CPLXMLNode *psTmpNode = NULL;
FilterEncodingNode *psNode = NULL;
char *szExpression = NULL;
char *szClassItem = NULL;
int i=0, nNewClasses=0, nClassBeforeFilter=0, nClassAfterFilter=0;
int nClassAfterRule=0, nClassBeforeRule=0;
char *pszTmpFilter = NULL;
layerObj *psCurrentLayer = NULL;
const char *pszWmsName=NULL;
int j=0;
const char *key=NULL;
if (psRoot && psLayer)
{
psUserStyle = CPLGetXMLNode(psRoot, "UserStyle");
if (psUserStyle)
{
psFeatureTypeStyle = CPLGetXMLNode(psUserStyle, "FeatureTypeStyle");
if (psFeatureTypeStyle)
{
while (psFeatureTypeStyle && psFeatureTypeStyle->pszValue &&
strcasecmp(psFeatureTypeStyle->pszValue,
"FeatureTypeStyle") == 0)
{
if (!psFeatureTypeStyle->pszValue ||
strcasecmp(psFeatureTypeStyle->pszValue,
"FeatureTypeStyle") != 0)
{
psFeatureTypeStyle = psFeatureTypeStyle->psNext;
continue;
}
/* -------------------------------------------------------------------- */
/* Parse rules with no Else filter. */
/* -------------------------------------------------------------------- */
psRule = CPLGetXMLNode(psFeatureTypeStyle, "Rule");
while (psRule)
{
if (!psRule->pszValue ||
strcasecmp(psRule->pszValue, "Rule") != 0)
{
psRule = psRule->psNext;
continue;
}
/* used for scale setting */
nClassBeforeRule = psLayer->numclasses;
psElseFilter = CPLGetXMLNode(psRule, "ElseFilter");
nClassBeforeFilter = psLayer->numclasses;
if (psElseFilter == NULL)
msSLDParseRule(psRule, psLayer);
nClassAfterFilter = psLayer->numclasses;
/* -------------------------------------------------------------------- */
/* Parse the filter and apply it to the latest class created by */
/* the rule. */
/* NOTE : Spatial Filter is not supported. */
/* -------------------------------------------------------------------- */
psFilter = CPLGetXMLNode(psRule, "Filter");
if (psFilter && psFilter->psChild &&
psFilter->psChild->pszValue)
{
/* clone the tree and set the next node to null */
/* so we only have the Filter node */
psTmpNode = CPLCloneXMLTree(psFilter);
psTmpNode->psNext = NULL;
pszTmpFilter = CPLSerializeXMLTree(psTmpNode);
CPLDestroyXMLNode(psTmpNode);
if (pszTmpFilter)
{
/* nTmp = strlen(psFilter->psChild->pszValue)+17; */
/* pszTmpFilter = malloc(sizeof(char)*nTmp); */
/* sprintf(pszTmpFilter,"<Filter>%s</Filter>", */
/* psFilter->psChild->pszValue); */
/* pszTmpFilter[nTmp-1]='\0'; */
psNode = FLTParseFilterEncoding(pszTmpFilter);
CPLFree(pszTmpFilter);
}
if (psNode)
{
/*preparse the filter for possible gml aliases set on the layer's metada:
"gml_NA3DESC_alias" "alias_name" and filter could be
<ogc:PropertyName>alias_name</ogc:PropertyName> #3079*/
for (j=0; j<psLayer->map->numlayers; j++)
{
psCurrentLayer = GET_LAYER(psLayer->map, j);
pszWmsName = msOWSLookupMetadata(&(psCurrentLayer->metadata), "MO", "name");
if ((psCurrentLayer->name && psLayer->name &&
strcasecmp(psCurrentLayer->name, psLayer->name) == 0) ||
(psCurrentLayer->group && psLayer->name &&
strcasecmp(psCurrentLayer->group, psLayer->name) == 0) ||
(psLayer->name && pszWmsName &&
strcasecmp(pszWmsName, psLayer->name) == 0))
break;
}
if (j < psLayer->map->numlayers)
{
/*make sure that the tmp layer has all the metadata that
the orinal layer has, allowing to do parsing for
such things as gml_attribute_type #3052*/
while (1)
{
key = msNextKeyFromHashTable(&psCurrentLayer->metadata, key);
if (!key)
break;
else
msInsertHashTable(&psLayer->metadata, key,
msLookupHashTable(&psCurrentLayer->metadata, key));
}
FLTPreParseFilterForAlias(psNode, psLayer->map, j, "G");
}
/* ==================================================================== */
/* If the filter has a spatial filter or is a simple, we keep */
/* the node. This node will be parsed when applying the SLD and */
/* be used to do queries on the layer. Simple filers */
/* (Comparision operators (PropertyIsEqualTo, */
/* PropertyNotEqualTo, ... combined or not with logical */
/* operators such as AND/OR/NOT) will be used to set the FILTER */
/* element of the layer. */
/* ==================================================================== */
if (FLTHasSpatialFilter(psNode))
psLayer->layerinfo = (void *)psNode;
szExpression = FLTGetMapserverExpression(psNode, psLayer);
if (szExpression)
{
szClassItem =
FLTGetMapserverExpressionClassItem(psNode);
nNewClasses =
nClassAfterFilter - nClassBeforeFilter;
for (i=0; i<nNewClasses; i++)
{
msLoadExpressionString(&psLayer->
class[psLayer->numclasses-1-i]->
expression, szExpression);
}
if (szClassItem)
psLayer->classitem = strdup(szClassItem);
}
}
}
nClassAfterRule = psLayer->numclasses;
nNewClasses = nClassAfterRule - nClassBeforeRule;
/* apply scale and title to newly created classes */
_SLDApplyRuleValues(psRule, psLayer, nNewClasses);
/* TODO : parse legendgraphic */
psRule = psRule->psNext;
}
/* -------------------------------------------------------------------- */
/* First parse rules with the else filter. These rules will */
/* create the classes that are placed at the end of class */
/* list. (See how classes are applied to layers in function */
/* msSLDApplySLD). */
/* -------------------------------------------------------------------- */
psRule = CPLGetXMLNode(psFeatureTypeStyle, "Rule");
while (psRule)
{
if (!psRule->pszValue ||
strcasecmp(psRule->pszValue, "Rule") != 0)
{
psRule = psRule->psNext;
continue;
}
psElseFilter = CPLGetXMLNode(psRule, "ElseFilter");
if (psElseFilter)
{
msSLDParseRule(psRule, psLayer);
_SLDApplyRuleValues(psRule, psLayer, 1);
}
psRule = psRule->psNext;
}
psFeatureTypeStyle = psFeatureTypeStyle->psNext;
}
}
}
/* check for Named styles*/
else
{
psNamedStyle = CPLGetXMLNode(psRoot, "NamedStyle");
if (psNamedStyle)
{
psSLDName = CPLGetXMLNode(psNamedStyle, "Name");
if (psSLDName && psSLDName->psChild && psSLDName->psChild->pszValue)
psLayer->classgroup = strdup(psSLDName->psChild->pszValue);
}
}
}
}
/************************************************************************/
/* void msSLDParseRule(CPLXMLNode *psRoot, layerObj *psLayer) */
/* */
/* Parse a Rule node into classes for a spcific layer. */
/************************************************************************/
void msSLDParseRule(CPLXMLNode *psRoot, layerObj *psLayer)
{
CPLXMLNode *psLineSymbolizer = NULL;
CPLXMLNode *psPolygonSymbolizer = NULL;
CPLXMLNode *psPointSymbolizer = NULL;
CPLXMLNode *psTextSymbolizer = NULL;
CPLXMLNode *psRasterSymbolizer = NULL;
int bSymbolizer = 0;
int bNewClass=0, nSymbolizer=0;
if (psRoot && psLayer)
{
/* TODO : parse name of the rule */
/* -------------------------------------------------------------------- */
/* The SLD specs assumes here that a certain FeatureType can only have*/
/* rules for only one type of symbolizer. */
/* -------------------------------------------------------------------- */
/* ==================================================================== */
/* For each rule a new class is created. If there are more than */
/* one symbolizer of the same type, a style is added in the */
/* same class. */
/* ==================================================================== */
nSymbolizer =0;
/* line symbolizer */
psLineSymbolizer = CPLGetXMLNode(psRoot, "LineSymbolizer");
while (psLineSymbolizer)
{
if (!psLineSymbolizer->pszValue ||
strcasecmp(psLineSymbolizer->pszValue,
"LineSymbolizer") != 0)
{
psLineSymbolizer = psLineSymbolizer->psNext;
continue;
}
bSymbolizer = 1;
if (nSymbolizer == 0)
bNewClass = 1;
else
bNewClass = 0;
msSLDParseLineSymbolizer(psLineSymbolizer, psLayer, bNewClass);
psLineSymbolizer = psLineSymbolizer->psNext;
psLayer->type = MS_LAYER_LINE;
nSymbolizer++;
}
/* Polygon symbolizer */
psPolygonSymbolizer = CPLGetXMLNode(psRoot, "PolygonSymbolizer");
while (psPolygonSymbolizer)
{
if (!psPolygonSymbolizer->pszValue ||
strcasecmp(psPolygonSymbolizer->pszValue,
"PolygonSymbolizer") != 0)
{
psPolygonSymbolizer = psPolygonSymbolizer->psNext;
continue;
}
bSymbolizer = 1;
if (nSymbolizer == 0)
bNewClass = 1;
else
bNewClass = 0;
msSLDParsePolygonSymbolizer(psPolygonSymbolizer, psLayer,
bNewClass);
psPolygonSymbolizer = psPolygonSymbolizer->psNext;
psLayer->type = MS_LAYER_POLYGON;
nSymbolizer++;
}
/* Point Symbolizer */
psPointSymbolizer = CPLGetXMLNode(psRoot, "PointSymbolizer");
while (psPointSymbolizer)
{
if (!psPointSymbolizer->pszValue ||
strcasecmp(psPointSymbolizer->pszValue,
"PointSymbolizer") != 0)
{
psPointSymbolizer = psPointSymbolizer->psNext;
continue;
}
bSymbolizer = 1;
if (nSymbolizer == 0)
bNewClass = 1;
else
bNewClass = 0;
msSLDParsePointSymbolizer(psPointSymbolizer, psLayer, bNewClass);
psPointSymbolizer = psPointSymbolizer->psNext;
psLayer->type = MS_LAYER_POINT;
nSymbolizer++;
}
/* Text symbolizer */
/* ==================================================================== */
/* For text symbolizer, here is how it is translated into */
/* mapserver classes : */
/* - If there are other symbolizers(line, polygon, symbol), */
/* the label object created will be created in the same class */
/* (the last class) as the symbolizer. This allows o have for */
/* example of point layer with labels. */
/* - If there are no other symbolizers, a new clas will be */
/* created ocontain the label object. */
/* ==================================================================== */
psTextSymbolizer = CPLGetXMLNode(psRoot, "TextSymbolizer");
while (psTextSymbolizer && psTextSymbolizer->pszValue &&
strcasecmp(psTextSymbolizer->pszValue,
"TextSymbolizer") == 0)
{
if (!psTextSymbolizer->pszValue ||
strcasecmp(psTextSymbolizer->pszValue,
"TextSymbolizer") != 0)
{
psTextSymbolizer = psTextSymbolizer->psNext;
continue;
}
if (nSymbolizer == 0)
psLayer->type = MS_LAYER_ANNOTATION;
msSLDParseTextSymbolizer(psTextSymbolizer, psLayer, bSymbolizer);
psTextSymbolizer = psTextSymbolizer->psNext;
}
/* Raster symbolizer */
psRasterSymbolizer = CPLGetXMLNode(psRoot, "RasterSymbolizer");
while (psRasterSymbolizer && psRasterSymbolizer->pszValue &&
strcasecmp(psRasterSymbolizer->pszValue,
"RasterSymbolizer") == 0)
{
if (!psRasterSymbolizer->pszValue ||
strcasecmp(psRasterSymbolizer->pszValue,
"RasterSymbolizer") != 0)
{
psRasterSymbolizer = psRasterSymbolizer->psNext;
continue;
}
msSLDParseRasterSymbolizer(psRasterSymbolizer, psLayer);
psRasterSymbolizer = psRasterSymbolizer->psNext;
psLayer->type = MS_LAYER_RASTER;
}
}
}
/************************************************************************/
/* void msSLDParseLineSymbolizer(CPLXMLNode *psRoot, layerObj */
/* *psLayer) */
/* */
/* Parses the LineSymbolizer rule and creates a class in the */
/* layer. */
/* */
/* <xs:element name="LineSymbolizer"> */
/* <xs:complexType> */
/* <xs:sequence> */
/* <xs:element ref="sld:Geometry" minOccurs="0"/> */
/* <xs:element ref="sld:Stroke" minOccurs="0"/> */
/* </xs:sequence> */
/* </xs:complexType> */