Split off OSRM getInstructionText function

diff --git a/app/assets/javascripts/index/directions/fossgis_osrm.js b/app/assets/javascripts/index/directions/fossgis_osrm.js
index b8001f1d21d7dc9e2a65881af38d74485f297222..bf5ef2547e00a8fd8000c712076a8d983ca1d964 100644 (file)
--- a/app/assets/javascripts/index/directions/fossgis_osrm.js
+++ b/app/assets/javascripts/index/directions/fossgis_osrm.js
@@ -5,7 +5,7 @@
   function FOSSGISOSRMEngine(modeId, vehicleType) {
     let cachedHints = [];
 
-    function _processDirections(leg) {
+    function getInstructionText(step, maneuver_id) {
       const INSTRUCTION_TEMPLATE = {
         "continue": "continue",
         "merge right": "merge_right",
@@ -33,36 +33,57 @@
         "depart": "start",
         "arrive": "destination"
       };
-      const ICON_MAP = {
-        "continue": "straight",
-        "merge right": "merge-right",
-        "merge left": "merge-left",
-        "off ramp right": "exit-right",
-        "off ramp left": "exit-left",
-        "on ramp right": "right",
-        "on ramp left": "left",
-        "fork right": "fork-right",
-        "fork left": "fork-left",
-        "end of road right": "end-of-road-right",
-        "end of road left": "end-of-road-left",
-        "turn straight": "straight",
-        "turn slight right": "slight-right",
-        "turn right": "right",
-        "turn sharp right": "sharp-right",
-        "turn uturn": "u-turn-left",
-        "turn slight left": "slight-left",
-        "turn left": "left",
-        "turn sharp left": "sharp-left",
-        "roundabout": "roundabout",
-        "rotary": "roundabout",
-        "exit roundabout": "roundabout",
-        "exit rotary": "roundabout",
-        "depart": "start",
-        "arrive": "destination"
-      };
       function numToWord(num) {
         return ["first", "second", "third", "fourth", "fifth", "sixth", "seventh", "eighth", "ninth", "tenth"][num - 1];
       }
+
+      const instrPrefix = "javascripts.directions.instructions.";
+      let template = instrPrefix + INSTRUCTION_TEMPLATE[maneuver_id];
+
+      let instText;
+      const destinations = "<b>" + step.destinations + "</b>";
+      let namedRoad = true;
+      let name;
+
+      if (step.name && step.ref) {
+        name = "<b>" + step.name + " (" + step.ref + ")</b>";
+      } else if (step.name) {
+        name = "<b>" + step.name + "</b>";
+      } else if (step.ref) {
+        name = "<b>" + step.ref + "</b>";
+      } else {
+        name = OSM.i18n.t(instrPrefix + "unnamed");
+        namedRoad = false;
+      }
+
+      if (step.maneuver.type.match(/^exit (rotary|roundabout)$/)) {
+        instText = OSM.i18n.t(template, { name: name });
+      } else if (step.maneuver.type.match(/^(rotary|roundabout)$/)) {
+        if (step.maneuver.exit) {
+          if (step.maneuver.exit <= 10) {
+            instText = OSM.i18n.t(template + "_with_exit_ordinal", { exit: OSM.i18n.t(instrPrefix + "exit_counts." + numToWord(step.maneuver.exit)), name: name });
+          } else {
+            instText = OSM.i18n.t(template + "_with_exit", { exit: step.maneuver.exit, name: name });
+          }
+        } else {
+          instText = OSM.i18n.t(template + "_without_exit", { name: name });
+        }
+      } else if (step.maneuver.type.match(/^(on ramp|off ramp)$/)) {
+        const params = {};
+        if (step.exits && step.maneuver.type.match(/^(off ramp)$/)) params.exit = step.exits;
+        if (step.destinations) params.directions = destinations;
+        if (namedRoad) params.directions = name;
+        if (Object.keys(params).length > 0) {
+          template = template + "_with_" + Object.keys(params).join("_");
+        }
+        instText = OSM.i18n.t(template, params);
+      } else {
+        instText = OSM.i18n.t(template + "_without_exit", { name: name });
+      }
+      return instText;
+    }
+
+    function _processDirections(leg) {
       function getManeuverId(maneuver) {
         // special case handling
         switch (maneuver.type) {
@@ -87,56 +108,45 @@
             return "turn " + maneuver.modifier;
         }
       }
+      const ICON_MAP = {
+        "continue": "straight",
+        "merge right": "merge-right",
+        "merge left": "merge-left",
+        "off ramp right": "exit-right",
+        "off ramp left": "exit-left",
+        "on ramp right": "right",
+        "on ramp left": "left",
+        "fork right": "fork-right",
+        "fork left": "fork-left",
+        "end of road right": "end-of-road-right",
+        "end of road left": "end-of-road-left",
+        "turn straight": "straight",
+        "turn slight right": "slight-right",
+        "turn right": "right",
+        "turn sharp right": "sharp-right",
+        "turn uturn": "u-turn-left",
+        "turn slight left": "slight-left",
+        "turn left": "left",
+        "turn sharp left": "sharp-left",
+        "roundabout": "roundabout",
+        "rotary": "roundabout",
+        "exit roundabout": "roundabout",
+        "exit rotary": "roundabout",
+        "depart": "start",
+        "arrive": "destination"
+      };
 
       const steps = leg.steps.map(function (step) {
         const maneuver_id = getManeuverId(step.maneuver);
-
-        const instrPrefix = "javascripts.directions.instructions.";
-        let template = instrPrefix + INSTRUCTION_TEMPLATE[maneuver_id];
-
         const step_geometry = L.PolylineUtil.decode(step.geometry, { precision: 5 });
-
-        let instText;
-        const destinations = "<b>" + step.destinations + "</b>";
-        let namedRoad = true;
-        let name;
-
-        if (step.name && step.ref) {
-          name = "<b>" + step.name + " (" + step.ref + ")</b>";
-        } else if (step.name) {
-          name = "<b>" + step.name + "</b>";
-        } else if (step.ref) {
-          name = "<b>" + step.ref + "</b>";
-        } else {
-          name = OSM.i18n.t(instrPrefix + "unnamed");
-          namedRoad = false;
-        }
-
-        if (step.maneuver.type.match(/^exit (rotary|roundabout)$/)) {
-          instText = OSM.i18n.t(template, { name: name });
-        } else if (step.maneuver.type.match(/^(rotary|roundabout)$/)) {
-          if (step.maneuver.exit) {
-            if (step.maneuver.exit <= 10) {
-              instText = OSM.i18n.t(template + "_with_exit_ordinal", { exit: OSM.i18n.t(instrPrefix + "exit_counts." + numToWord(step.maneuver.exit)), name: name });
-            } else {
-              instText = OSM.i18n.t(template + "_with_exit", { exit: step.maneuver.exit, name: name });
-            }
-          } else {
-            instText = OSM.i18n.t(template + "_without_exit", { name: name });
-          }
-        } else if (step.maneuver.type.match(/^(on ramp|off ramp)$/)) {
-          const params = {};
-          if (step.exits && step.maneuver.type.match(/^(off ramp)$/)) params.exit = step.exits;
-          if (step.destinations) params.directions = destinations;
-          if (namedRoad) params.directions = name;
-          if (Object.keys(params).length > 0) {
-            template = template + "_with_" + Object.keys(params).join("_");
-          }
-          instText = OSM.i18n.t(template, params);
-        } else {
-          instText = OSM.i18n.t(template + "_without_exit", { name: name });
-        }
-        return [[step.maneuver.location[1], step.maneuver.location[0]], ICON_MAP[maneuver_id], instText, step.distance, step_geometry];
+        const instText = getInstructionText(step, maneuver_id);
+        return [
+          [step.maneuver.location[1], step.maneuver.location[0]],
+          ICON_MAP[maneuver_id],
+          instText,
+          step.distance,
+          step_geometry
+        ];
       });
 
       return {