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// Copyright 2009, 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.
// This returns the part of a My Map within the specified bounds. This is
// interactive program which lists the users maps, asks for one by name,
// and returns the features in that map within a bounding box specified by
// the bounds of a KML file the user supplies. Any KML file can be used to
// specify these bounds, for example one with a 2 vertex line will specify
// the smallest north-up bounding box around that line.
#include <iostream>
#include <string>
#include "boost/scoped_ptr.hpp"
#include "curlfetch.h"
#include "prompt.h"
#include "kml/base/file.h"
#include "kml/dom.h"
#include "kml/engine.h"
#include "kml/convenience/atom_util.h"
#include "kml/convenience/http_client.h"
#include "kml/convenience/google_maps_data.h"
using kmlconvenience::GoogleMapsData;
// This returns the bounding box of the given KML file.
static bool GetMapBounds(const std::string map_name, kmlengine::Bbox* bbox) {
if (!kmlbase::StringEndsWith(map_name, ".kml")) {
std::cerr << "Specify a KML file." << std::endl;
return false;
} // TODO: else look for a My Map by this name
std::string kml_data;
if (!kmlbase::File::ReadFileToString(map_name, &kml_data)) {
std::cerr << "Read failed: " << map_name << std::endl;
return false;
}
kmlengine::KmlFilePtr kml_file(
kmlengine::KmlFile::CreateFromParse(kml_data, NULL));
if (!kml_file.get()) {
std::cerr << "Parse failed: " << map_name << std::endl;
return false;
}
kmldom::FeaturePtr root = kmlengine::GetRootFeature(kml_file->get_root());
if (!root.get()) {
std::cerr << "No root feature? " << map_name << std::endl;
return false;
}
if (!kmlengine::GetFeatureBounds(root, bbox)) {
std::cerr << "No location info? " << map_name << std::endl;
return false;
}
return true;
}
int main(int argc, char** argv) {
if (argc > 1 ) {
std::cerr << "Warning: this is an interactive program." << std::endl;
std::cerr << "All command line args are ignored." << std::endl;
}
std::string user;
std::string password;
// Get the user logged in first.
std::cout << "Email: ";
std::cin >> user;
password = Prompt::PromptAndInputWithNoEcho("Password: ");
CurlHttpClient* curl_http_client = new CurlHttpClient(
"libkml:examples:hellonet:getmapkml");
if (!curl_http_client->Login(GoogleMapsData::get_service_name(), user,
password)) {
std::cerr << "Login failed" << std::endl;
return 1;
}
std::cout << "Login succeeded..." << std::endl;
// Create a GoogleMapsData client from the logged in HttpClient and
// get the user's list of maps.
boost::scoped_ptr<GoogleMapsData> google_maps_data(
GoogleMapsData::Create(curl_http_client));
kmldom::AtomFeedPtr meta_feed = google_maps_data->GetMetaFeed();
if (!meta_feed.get()) {
std::cerr << "GetMetaFeed failed" << std::endl;
return 1;
}
again:
std::cout << "You have " << meta_feed->get_entry_array_size() << " maps."
<< std::endl;
for (size_t l = 0; l < meta_feed->get_entry_array_size(); ++l) {
const kmldom::AtomEntryPtr& entry = meta_feed->get_entry_array_at(l);
std::cout << entry->get_title() << std::endl;
}
std::cout << "Title of map to search: ";
// Use std::getline here to capture the entire line.
std::string map_title;
std::getline(std::cin, map_title);
const kmldom::AtomEntryPtr& map_entry =
kmlconvenience::AtomUtil::FindEntryByTitle(meta_feed, map_title);
if (!map_entry.get()) {
std::cout << "No map with title: " << map_title << std::endl;
if (Prompt::PromptAgain("Try another title? ")) {
goto again;
}
return 1;
}
kml_again:
std::cout << "Bounds KML: ";
// Use std::getline here to capture the entire line.
std::string bounds_map;
std::getline(std::cin, bounds_map);
kmlengine::Bbox bbox;
if (!GetMapBounds(bounds_map, &bbox)) {
goto kml_again;
}
const kmldom::AtomFeedPtr feature_feed = google_maps_data->SearchMapByBbox(
map_entry, bbox);
std::cout << "There are " << feature_feed->get_entry_array_size()
<< " features in this bounding box." << std::endl;
std::cout << "Output file: ";
std::string output;
std::cin >> output;
// Dig out the KML features in the feed and put them in a <Document>.
kmldom::KmlPtr kml = kmldom::KmlFactory::GetFactory()->CreateKml();
kmldom::ContainerPtr container =
google_maps_data->CreateDocumentOfMapFeatures(feature_feed);
kml->set_feature(container);
std::cout << "There are " << container->get_feature_array_size()
<< " Features in the map saved to " << output << "." << std::endl;
// Use KmlFile's serialize to get xml proper header and xmlns.
boost::scoped_ptr<kmlengine::KmlFile> kml_file(
kmlengine::KmlFile::CreateFromImport(kml));
std::string xml;
kml_file->SerializeToString(&xml);
kmlbase::File::WriteStringToFile(xml, output.c_str());
std::cin.get();
if (Prompt::PromptAgain("Get KML for another map? ")) {
goto again;
}
return 0;
}
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