Post install scripts for installing metadata files

Author: pijaro

src/Ros2ForUnity/Scripts/PostInstall.cs

@@ -0,0 +1,50 @@
+// Copyright 2019-2022 Robotec.ai.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#if UNITY_EDITOR
+using System.IO;
+using UnityEngine;
+using UnityEditor;
+using UnityEditor.Build;
+using UnityEditor.Build.Reporting;
+
+namespace ROS2
+{
+
+/// <summary>
+/// An internal class responsible for installing ros2-for-unity metadata files 
+/// </summary>
+internal class PostInstall : IPostprocessBuildWithReport
+{
+    public int callbackOrder { get { return 0; } }
+    public void OnPostprocessBuild(BuildReport report)
+    {
+        var r2fuMetadataName = "metadata_ros2_for_unity.xml";
+        var r2csMetadataName = "metadata_ros2cs.xml";
+
+        // FileUtil.CopyFileOrDirectory: All file separators should be forward ones "/".
+        var r2fuMeta = ROS2ForUnity.GetRos2ForUnityPath() + "/" + r2fuMetadataName; 
+        var r2csMeta = ROS2ForUnity.GetPluginPath() + "/" + r2csMetadataName;
+        var outputDir = Directory.GetParent(report.summary.outputPath);
+        var execFilename = Path.GetFileNameWithoutExtension(report.summary.outputPath);
+        FileUtil.CopyFileOrDirectory(
+            r2fuMeta, outputDir + "/" + execFilename + "_Data/" + r2fuMetadataName);
+        FileUtil.CopyFileOrDirectory(
+            r2csMeta, outputDir + "/" + execFilename + "_Data/Plugins/" + r2csMetadataName);
+    }
+
+}
+
+}
+#endif

src/Ros2ForUnity/Scripts/ROS2ForUnity.cs

@@ -38,7 +38,7 @@ enum Platform
         Linux
     }
 
-    private Platform GetOS()
+    private static Platform GetOS()
     {
         if (Application.platform == RuntimePlatform.LinuxEditor || Application.platform == RuntimePlatform.LinuxPlayer)
         {
@@ -51,11 +51,11 @@ private Platform GetOS()
         throw new System.NotSupportedException("Only Linux and Windows are supported");
     }
 
-    private bool InEditor() {
+    private static bool InEditor() {
         return Application.isEditor;
     }
 
-    private string GetOSName()
+    private static string GetOSName()
     {
         switch (GetOS())
         {
@@ -83,7 +83,7 @@ private string GetEnvPathVariableValue()
         return Environment.GetEnvironmentVariable(GetEnvPathVariableName());
     }
 
-    private string GetRos2ForUnityPath()
+    public static string GetRos2ForUnityPath()
     {
         char separator = Path.DirectorySeparatorChar;
         string appDataPath = Application.dataPath;
@@ -95,7 +95,7 @@ private string GetRos2ForUnityPath()
         return pluginPath; 
     }
 
-    private string GetPluginPath()
+    public static string GetPluginPath()
     {
         char separator = Path.DirectorySeparatorChar;
         string ros2ForUnityPath = GetRos2ForUnityPath();