125 lines
4.5 KiB
C++
125 lines
4.5 KiB
C++
/*
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open source routing machine
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Copyright (C) Dennis Luxen, 2010
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU AFFERO General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU Affero General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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or see http://www.gnu.org/licenses/agpl.txt.
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*/
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#ifndef NearestPlugin_H_
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#define NearestPlugin_H_
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#include <fstream>
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#include "BasePlugin.h"
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#include "RouteParameters.h"
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#include "../Server/DataStructures/QueryObjectsStorage.h"
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#include "../DataStructures/NodeInformationHelpDesk.h"
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#include "../Util/StringUtil.h"
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/*
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* This Plugin locates the nearest point on a street in the road network for a given coordinate.
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*/
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class NearestPlugin : public BasePlugin {
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public:
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NearestPlugin(QueryObjectsStorage * objects) : names(objects->names) {
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nodeHelpDesk = objects->nodeHelpDesk;
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descriptorTable.Set("", 0); //default descriptor
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descriptorTable.Set("json", 1);
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}
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std::string GetDescriptor() const { return std::string("nearest"); }
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std::string GetVersionString() const { return std::string("0.3 (DL)"); }
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void HandleRequest(const RouteParameters & routeParameters, http::Reply& reply) {
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//check number of parameters
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if(!routeParameters.coordinates.size()) {
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reply = http::Reply::stockReply(http::Reply::badRequest);
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return;
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}
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if(false == checkCoord(routeParameters.coordinates[0])) {
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reply = http::Reply::stockReply(http::Reply::badRequest);
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return;
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}
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//query to helpdesk
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PhantomNode result;
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nodeHelpDesk->FindPhantomNodeForCoordinate(routeParameters.coordinates[0], result, routeParameters.zoomLevel);
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std::string tmp;
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//json
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if("" != routeParameters.jsonpParameter) {
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reply.content += routeParameters.jsonpParameter;
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reply.content += "(";
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}
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reply.status = http::Reply::ok;
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reply.content += ("{");
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reply.content += ("\"version\":0.3,");
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reply.content += ("\"status\":");
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if(UINT_MAX != result.edgeBasedNode)
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reply.content += "0,";
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else
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reply.content += "207,";
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reply.content += ("\"mapped_coordinate\":");
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reply.content += "[";
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if(UINT_MAX != result.edgeBasedNode) {
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convertInternalLatLonToString(result.location.lat, tmp);
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reply.content += tmp;
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convertInternalLatLonToString(result.location.lon, tmp);
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reply.content += ",";
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reply.content += tmp;
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}
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reply.content += "],";
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reply.content += "\"name\":\"";
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if(UINT_MAX != result.edgeBasedNode)
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reply.content += names[result.nodeBasedEdgeNameID];
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reply.content += "\"";
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reply.content += ",\"transactionId\":\"OSRM Routing Engine JSON Nearest (v0.3)\"";
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reply.content += ("}");
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reply.headers.resize(3);
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if("" != routeParameters.jsonpParameter) {
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reply.content += ")";
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reply.headers[1].name = "Content-Type";
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reply.headers[1].value = "text/javascript";
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reply.headers[2].name = "Content-Disposition";
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reply.headers[2].value = "attachment; filename=\"location.js\"";
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} else {
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reply.headers[1].name = "Content-Type";
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reply.headers[1].value = "application/x-javascript";
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reply.headers[2].name = "Content-Disposition";
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reply.headers[2].value = "attachment; filename=\"location.json\"";
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}
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reply.headers[0].name = "Content-Length";
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intToString(reply.content.size(), tmp);
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reply.headers[0].value = tmp;
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}
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private:
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inline bool checkCoord(const _Coordinate & c) {
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if(c.lat > 90*100000 || c.lat < -90*100000 || c.lon > 180*100000 || c.lon <-180*100000) {
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return false;
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}
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return true;
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}
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NodeInformationHelpDesk * nodeHelpDesk;
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HashTable<std::string, unsigned> descriptorTable;
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std::vector<std::string> & names;
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};
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#endif /* NearestPlugin_H_ */
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