Create public facing libraries for extractor, contractor and datastore

New libraries libosrm_extract, libosrm_contract, libosrm_store

example/example.cpp

@@ -0,0 +1,63 @@
+#include "osrm/json_container.hpp"
+#include "osrm/engine_config.hpp"
+#include "osrm/route_parameters.hpp"
+#include "osrm/osrm.hpp"
+
+#include <string>
+#include <utility>
+#include <iostream>
+#include <exception>
+#include <cstdlib>
+
+int main(int argc, const char *argv[]) try
+{
+    if (argc < 2)
+    {
+        std::cerr << "Error: Not enough arguments." << std::endl
+                  << "Run " << argv[0] << " data.osrm" << std::endl;
+        return EXIT_FAILURE;
+    }
+
+    osrm::EngineConfig engine_config;
+    std::string base_path(argv[1]);
+    engine_config.server_paths["ramindex"] = base_path + ".ramIndex";
+    engine_config.server_paths["fileindex"] = base_path + ".fileIndex";
+    engine_config.server_paths["hsgrdata"] = base_path + ".hsgr";
+    engine_config.server_paths["nodesdata"] = base_path + ".nodes";
+    engine_config.server_paths["edgesdata"] = base_path + ".edges";
+    engine_config.server_paths["coredata"] = base_path + ".core";
+    engine_config.server_paths["geometries"] = base_path + ".geometry";
+    engine_config.server_paths["timestamp"] = base_path + ".timestamp";
+    engine_config.server_paths["namesdata"] = base_path + ".names";
+    engine_config.use_shared_memory = false;
+
+    osrm::OSRM routing_machine(engine_config);
+
+    osrm::RouteParameters route_parameters;
+    // route is in Berlin
+    auto start = std::make_pair(52.519930, 13.438640);
+    auto target = std::make_pair(52.513191, 13.415852);
+    route_parameters.service = "viaroute";
+    route_parameters.AddCoordinate({start.first, start.second});
+    route_parameters.AddCoordinate({target.first, target.second});
+
+    osrm::json::Object json_result;
+    const int result_code = routing_machine.RunQuery(route_parameters, json_result);
+    std::cout << "result code: " << result_code << std::endl;
+    // 2xx code
+    if (result_code / 100 == 2)
+    {
+        // Extract data out of JSON structure
+        auto& summary = json_result.values["route_summary"].get<osrm::json::Object>();
+        auto duration = summary.values["total_time"].get<osrm::json::Number>().value;
+        auto distance = summary.values["total_distance"].get<osrm::json::Number>().value;
+        std::cout << "duration: " << duration << std::endl;
+        std::cout << "distance: " << distance << std::endl;
+    }
+    return EXIT_SUCCESS;
+}
+catch (const std::exception &current_exception)
+{
+    std::cout << "exception: " << current_exception.what();
+    return EXIT_FAILURE;
+}