Add Lua function to return a list of all loaded kernels

include/openspace/util/spicemanager.h

@@ -232,6 +232,14 @@ public:
      */
     void unloadKernel(KernelHandle kernelId);
 
+    /**
+     * Returns a list of all loaded kernels in the kernel pool that have been loaded
+     * through the SpiceManager. The kernels are reported in order of their loading.
+     *
+     * \return The list of all loaded kernels that have been loaded through this manager
+     */
+    std::vector<std::string> loadedKernels() const;
+
     /**
      * Unloads a SPICE kernel identified by the \p filePath which was used in the
      * loading call to #loadKernel. The unloading is done by calling the `unload_c`

src/util/spicemanager.cpp

@@ -324,6 +324,15 @@ void SpiceManager::unloadKernel(std::string filePath) {
     }
 }
 
+std::vector<std::string> SpiceManager::loadedKernels() const {
+    std::vector<std::string> res;
+    res.reserve(_loadedKernels.size());
+    for (const KernelInformation& info : _loadedKernels) {
+        res.push_back(info.path);
+    }
+    return res;
+}
+
 bool SpiceManager::hasSpkCoverage(const std::string& target, double et) const {
     ghoul_assert(!target.empty(), "Empty target");
 
@@ -1530,9 +1539,10 @@ scripting::LuaLibrary SpiceManager::luaLibrary() {
         {
             codegen::lua::LoadKernel,
             codegen::lua::UnloadKernel,
+            codegen::lua::Kernels,
             codegen::lua::SpiceBodies,
             codegen::lua::RotationMatrix,
-            codegen::lua::Position
+            codegen::lua::Position,
         }
     };
 }

src/util/spicemanager_lua.inl

@@ -68,6 +68,13 @@ namespace {
     }
 }
 
+/**
+ * Returns a list of all loaded kernels 
+ */
+[[codegen::luawrap]] std::vector<std::string> kernels() {
+    return openspace::SpiceManager::ref().loadedKernels();
+}
+
 /**
  * Returns a list of Spice Bodies loaded into the system. Returns SPICE built in frames if
  * builtInFrames. Returns User loaded frames if !builtInFrames.