Copy versioned libraries when building unity project (#68)

Copy versioned libraries when building unity project

Author: msz-rai

src/Ros2ForUnity/Scripts/PostInstall.cs

@@ -13,7 +13,11 @@
 // limitations under the License.
 
 #if UNITY_EDITOR
+using System;
+using System.Collections.Generic;
 using System.IO;
+using System.Linq;
+using System.Text.RegularExpressions;
 using UnityEngine;
 using UnityEditor;
 using UnityEditor.Build;
@@ -43,6 +47,16 @@ public void OnPostprocessBuild(BuildReport report)
         if (EditorUserBuildSettings.activeBuildTarget == BuildTarget.StandaloneLinux64) {
             FileUtil.CopyFileOrDirectory(
                 r2csMeta, outputDir + "/" + execFilename + "_Data/Plugins/" + r2csMetadataName);
+
+            // Copy versioned libraries (Unity skips them)
+            Regex soWithVersionReg = new Regex(@".*\.so(\.[0-9])+$");
+            var versionedLibs = new List<String>(Directory.GetFiles(ROS2ForUnity.GetPluginPath()))
+                                    .Where(path => soWithVersionReg.IsMatch(path))
+                                    .ToList();
+            foreach (var libPath in versionedLibs) {
+                FileUtil.CopyFileOrDirectory(
+                    libPath, outputDir + "/" + execFilename + "_Data/Plugins/" + Path.GetFileName(libPath));
+            }
         } else {
             FileUtil.CopyFileOrDirectory(
                 r2csMeta, outputDir + "/" + execFilename + "_Data/Plugins/x86_64/" + r2csMetadataName);