New "sides" setting in base parameters for phantom nodes.

- Adding sides parameter into base parameters, it can take the values SIDE, OPPOSITE or DEFAULT.
 - Adding url parser for "sides" parameter, url values are "s" for SIDE, "o" for OPPOSITE and "d" for DEFAULT, example : "sides=s;s".
 - Checking parameters, if "sides" parameter is used, the number of parameter is the same as number of location.
 - Create a phantom to start at side driving or Opposite side driving.

Signed-off-by: FILLAU Jean-Maxime <jean-maxime.fillau@mapotempo.com>

include/engine/plugins/plugin_base.hpp

@@ -16,6 +16,8 @@
 #include <string>
 #include <vector>
 
+#include <util/log.hpp>
+
 namespace osrm
 {
 namespace engine
@@ -224,10 +226,17 @@ class BasePlugin
         const bool use_hints = !parameters.hints.empty();
         const bool use_bearings = !parameters.bearings.empty();
         const bool use_radiuses = !parameters.radiuses.empty();
+        const bool use_sides = !parameters.sides.empty();
 
         BOOST_ASSERT(parameters.IsValid());
         for (const auto i : util::irange<std::size_t>(0UL, parameters.coordinates.size()))
         {
+            SideValue sideValue = engine::SideValue::BOTH;
+            // TODO init at SIDE for test
+            // SideValue sideValue = engine::SideValue::DEFAULT;
+            if (use_sides && parameters.sides[i])
+                sideValue = parameters.sides[i]->side;
+
             if (use_hints && parameters.hints[i] &&
                 parameters.hints[i]->IsValid(parameters.coordinates[i], facade))
             {
@@ -268,7 +277,7 @@ class BasePlugin
                 {
                     phantom_node_pairs[i] =
                         facade.NearestPhantomNodeWithAlternativeFromBigComponent(
-                            parameters.coordinates[i]);
+                            parameters.coordinates[i], sideValue);
                 }
             }