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|
/******************************************************************************
*
* Project: KML Translator
* Purpose: Implements OGRLIBKMLDriver
* Author: Brian Case, rush at winkey dot org
*
******************************************************************************
* Copyright (c) 2010, Brian Case
*
* 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 or substantial portions of the 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
* DEALINGS IN THE SOFTWARE.
*****************************************************************************/
#include <ogrsf_frmts.h>
#include <ogr_featurestyle.h>
#include <string>
#include <iostream>
using namespace std;
#include <kml/dom.h>
using kmldom::KmlFactory;;
using kmldom::IconStylePtr;
using kmldom::PolyStylePtr;
using kmldom::LineStylePtr;
using kmldom::LabelStylePtr;
using kmldom::StylePtr;
using kmldom::Style;
using kmldom::StyleMapPtr;
using kmldom::StyleSelectorPtr;
#include "ogrlibkmlfeaturestyle.h"
#include "ogrlibkmlstyle.h"
/******************************************************************************
function to write out a features style to kml
args:
poOgrLayer the layer the feature is in
poOgrFeat the feature
poKmlFactory the kml dom factory
poKmlPlacemark the placemark to add it to
returns:
nothing
******************************************************************************/
void featurestyle2kml (
OGRLIBKMLDataSource * poOgrDS,
OGRLayer * poOgrLayer,
OGRFeature * poOgrFeat,
KmlFactory * poKmlFactory,
PlacemarkPtr poKmlPlacemark )
{
/***** get the style table *****/
OGRStyleTable *poOgrSTBL;
const char *pszStyleString = poOgrFeat->GetStyleString ( );
/***** does the feature have style? *****/
if ( pszStyleString ) {
/***** does it ref a style table? *****/
if ( *pszStyleString == '@' ) {
/***** is the name in the layer style table *****/
OGRStyleTable *hSTBLLayer;
const char *pszTest = NULL;
if ( ( hSTBLLayer = poOgrLayer->GetStyleTable ( ) ) )
pszTest = hSTBLLayer->Find ( pszStyleString );
if ( pszTest ) {
string oTmp = "#";
oTmp.append ( pszStyleString + 1 );
poKmlPlacemark->set_styleurl ( oTmp );
}
/***** assume its a dataset style, mayby the user will add it later *****/
else {
string oTmp;
if ( poOgrDS->GetStylePath ( ) )
oTmp.append ( poOgrDS->GetStylePath ( ) );
oTmp.append ( "#" );
oTmp.append ( pszStyleString + 1 );
poKmlPlacemark->set_styleurl ( oTmp );
}
}
/***** no style table ref *****/
else {
StylePtr poKmlStyle = poKmlFactory->CreateStyle ( );
/***** parse the style string *****/
addstylestring2kml ( pszStyleString, poKmlStyle, poKmlFactory,
poKmlPlacemark, poOgrFeat );
/***** add the style to the placemark *****/
poKmlPlacemark->set_styleselector ( poKmlStyle );
}
}
/***** get the style table *****/
else if ( ( poOgrSTBL = poOgrFeat->GetStyleTable ( ) ) ) {
StylePtr poKmlStyle = poKmlFactory->CreateStyle ( );
/***** parse the style table *****/
poOgrSTBL->ResetStyleStringReading ( );
const char *pszStyleString;
while ( ( pszStyleString = poOgrSTBL->GetNextStyle ( ) ) ) {
if ( *pszStyleString == '@' ) {
/***** is the name in the layer style table *****/
OGRStyleTable *poOgrSTBLLayer;
const char *pszTest = NULL;
if ( ( poOgrSTBLLayer = poOgrLayer->GetStyleTable ( ) ) )
poOgrSTBLLayer->Find ( pszStyleString );
if ( pszTest ) {
string oTmp = "#";
oTmp.append ( pszStyleString + 1 );
poKmlPlacemark->set_styleurl ( oTmp );
}
/***** assume its a dataset style, *****/
/***** mayby the user will add it later *****/
else {
string oTmp;
if ( poOgrDS->GetStylePath ( ) )
oTmp.append ( poOgrDS->GetStylePath ( ) );
oTmp.append ( "#" );
oTmp.append ( pszStyleString + 1 );
poKmlPlacemark->set_styleurl ( oTmp );
}
}
else {
/***** parse the style string *****/
addstylestring2kml ( pszStyleString, poKmlStyle,
poKmlFactory, poKmlPlacemark, poOgrFeat );
/***** add the style to the placemark *****/
poKmlPlacemark->set_styleselector ( poKmlStyle );
}
}
}
}
/******************************************************************************
function to read a kml style into ogr's featurestyle
******************************************************************************/
void kml2featurestyle (
PlacemarkPtr poKmlPlacemark,
OGRLIBKMLDataSource * poOgrDS,
OGRLayer * poOgrLayer,
OGRFeature * poOgrFeat )
{
/***** does the placemark have a style url? *****/
if ( poKmlPlacemark->has_styleurl ( ) ) {
const string poKmlStyleUrl = poKmlPlacemark->get_styleurl ( );
/***** is the name in the layer style table *****/
char *pszUrl = CPLStrdup ( poKmlStyleUrl.c_str ( ) );
OGRStyleTable *poOgrSTBLLayer;
const char *pszTest = NULL;
/***** is it a layer style ? *****/
if ( *pszUrl == '#'
&& ( poOgrSTBLLayer = poOgrLayer->GetStyleTable ( ) ) )
{
pszTest = poOgrSTBLLayer->Find ( pszUrl + 1 );
}
if ( pszTest ) {
/***** should we resolve the style *****/
const char *pszResolve = CPLGetConfigOption ( "LIBKML_RESOLVE_STYLE", "no" );
if (EQUAL(pszResolve, "yes")) {
poOgrFeat->SetStyleString ( pszTest );
}
else {
*pszUrl = '@';
poOgrFeat->SetStyleString( pszUrl );
}
}
/***** is it a dataset style? *****/
else {
int nPathLen = strlen ( poOgrDS->GetStylePath ( ) );
if ( nPathLen == 0
|| EQUALN ( pszUrl, poOgrDS->GetStylePath ( ), nPathLen ))
{
/***** should we resolve the style *****/
const char *pszResolve = CPLGetConfigOption ( "LIBKML_RESOLVE_STYLE", "no" );
if ( EQUAL(pszResolve, "yes")
&& ( poOgrSTBLLayer = poOgrDS->GetStyleTable ( ) )
&& ( pszTest = poOgrSTBLLayer->Find ( pszUrl + nPathLen + 1) )
)
{
poOgrFeat->SetStyleString ( pszTest );
}
else {
pszUrl[nPathLen] = '@';
poOgrFeat->SetStyleString ( pszUrl + nPathLen );
}
}
/**** its someplace else *****/
else {
const char *pszFetch = CPLGetConfigOption ( "LIBKML_EXTERNAL_STYLE", "no" );
if ( EQUAL(pszFetch, "yes") ) {
/***** load up the style table *****/
char *pszUrlTmp = CPLStrdup(pszUrl);
char *pszPound;
if ((pszPound = strchr(pszUrlTmp, '#'))) {
*pszPound = '\0';
}
/***** try it as a url then a file *****/
VSILFILE *fp = NULL;
if ( (fp = VSIFOpenL( CPLFormFilename( "/vsicurl/",
pszUrlTmp,
NULL),
"r" ))
|| (fp = VSIFOpenL( pszUrlTmp, "r" )))
{
char szbuf[1025];
std::string oStyle = "";
/***** loop, read and copy to a string *****/
size_t nRead;
do {
nRead = VSIFReadL(szbuf, 1, sizeof(szbuf) - 1, fp);
if (nRead == 0)
break;
/***** copy buf to the string *****/
szbuf[nRead] = '\0';
oStyle.append( szbuf );
} while (!VSIFEofL(fp));
VSIFCloseL(fp);
/***** parse the kml into the ds style table *****/
if ( poOgrDS->ParseIntoStyleTable (&oStyle, pszUrlTmp)) {
kml2featurestyle (poKmlPlacemark,
poOgrDS,
poOgrLayer,
poOgrFeat );
}
else {
/***** if failed just store the url *****/
poOgrFeat->SetStyleString ( pszUrl );
}
}
CPLFree(pszUrlTmp);
}
else {
poOgrFeat->SetStyleString ( pszUrl );
}
}
}
CPLFree ( pszUrl );
}
/***** does the placemark have a style selector *****/
if ( poKmlPlacemark->has_styleselector ( ) ) {
StyleSelectorPtr poKmlStyleSelector =
poKmlPlacemark->get_styleselector ( );
/***** is the style a style? *****/
if ( poKmlStyleSelector->IsA ( kmldom::Type_Style ) ) {
StylePtr poKmlStyle = AsStyle ( poKmlStyleSelector );
OGRStyleMgr *poOgrSM = new OGRStyleMgr;
/***** if were resolveing style the feature *****/
/***** might already have styling to add too *****/
const char *pszResolve = CPLGetConfigOption ( "LIBKML_RESOLVE_STYLE", "no" );
if (EQUAL(pszResolve, "yes")) {
poOgrSM->InitFromFeature ( poOgrFeat );
}
else {
/***** if featyurestyle gets a name tool this needs changed to the above *****/
poOgrSM->InitStyleString ( NULL );
}
/***** read the style *****/
kml2stylestring ( poKmlStyle, poOgrSM );
/***** add the style to the feature *****/
poOgrFeat->SetStyleString(poOgrSM->GetStyleString(NULL));
delete poOgrSM;
}
/***** is the style a stylemap? *****/
else if ( poKmlStyleSelector->IsA ( kmldom::Type_StyleMap ) ) {
/* todo need to figure out what to do with a style map */
}
}
}
|
