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// Copyright 2008, Google Inc. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
// 2. Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
// 3. Neither the name of Google Inc. nor the names of its contributors may be
// used to endorse or promote products derived from this software without
// specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
// WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
// EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
// OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
// WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
// OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
// ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// Walks a Feature hierarchy, looking for Placemarks with Geometry, printing
// the type of Geometry encountered.
#include <iostream>
#include <string>
#include "kml/dom.h"
#include "kml/base/file.h"
using kmldom::ContainerPtr;
using kmldom::ElementPtr;
using kmldom::FeaturePtr;
using kmldom::GeometryPtr;
using kmldom::KmlPtr;
using kmldom::MultiGeometryPtr;
using kmldom::PlacemarkPtr;
using std::cout;
using std::endl;
static void WalkGeometry(const GeometryPtr& geometry);
static void WalkFeature(const FeaturePtr& feature);
static void WalkContainer(const ContainerPtr& container);
static const FeaturePtr GetRootFeature(const ElementPtr& root);
static void WalkGeometry(const GeometryPtr& geometry) {
if (!geometry) {
return;
}
// Print the Geometry type.
cout << "Found a";
switch(geometry->Type()) {
case kmldom::Type_Point:
cout << " Point";
break;
case kmldom::Type_LineString:
cout << " LineString";
break;
case kmldom::Type_LinearRing:
cout << " LinearRing";
break;
case kmldom::Type_Polygon:
cout << " Polygon";
break;
case kmldom::Type_MultiGeometry:
cout << " MultiGeometry";
break;
case kmldom::Type_Model:
cout << " Model";
break;
default: // KML has 6 types of Geometry.
break;
}
cout << endl;
// Recurse into <MultiGeometry>.
if (const MultiGeometryPtr multigeometry =
kmldom::AsMultiGeometry(geometry)) {
for (size_t i = 0; i < multigeometry->get_geometry_array_size(); ++i) {
WalkGeometry(multigeometry->get_geometry_array_at(i));
}
}
}
static void WalkFeature(const FeaturePtr& feature) {
if (feature) {
if (const ContainerPtr container = kmldom::AsContainer(feature)) {
WalkContainer(container);
} else if (const PlacemarkPtr placemark = kmldom::AsPlacemark(feature)) {
WalkGeometry(placemark->get_geometry());
}
}
}
static void WalkContainer(const ContainerPtr& container) {
for (size_t i = 0; i < container->get_feature_array_size(); ++i) {
WalkFeature(container->get_feature_array_at(i));
}
}
static const FeaturePtr GetRootFeature(const ElementPtr& root) {
const KmlPtr kml = kmldom::AsKml(root);
if (kml && kml->has_feature()) {
return kml->get_feature();
}
return kmldom::AsFeature(root);
}
int main(int argc, char** argv) {
std::string kml;
kmlbase::File::ReadFileToString(argv[1], &kml);
std::string errors;
WalkFeature(GetRootFeature(kmldom::Parse(kml, &errors)));
if (!errors.empty()) {
cout << argv[1] << ": parse error" << endl;
cout << errors << endl;
return 1;
}
return 0;
}
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