From 06c84c2db67300554884a60f8c844c08028f800e Mon Sep 17 00:00:00 2001
From: Ben Soares <b.soares@dundee.ac.uk>
Date: Fri, 4 Sep 2020 18:29:41 +0100
Subject: [PATCH] JAL-3679 Added externally specified plugins dir to J2sPlugin
 check

---
 build.gradle |   25 ++++++++++++++++++++-----
 1 file changed, 20 insertions(+), 5 deletions(-)

diff --git a/build.gradle b/build.gradle
index 0f4ad16..7f19a56 100644
--- a/build.gradle
+++ b/build.gradle
@@ -2836,10 +2836,25 @@ task jalviewjsIDE_checkJ2sPlugin {
     if (eclipseHome == null || ! IN_ECLIPSE) {
       throw new StopExecutionException("Cannot find running Eclipse home from System.properties['eclipse.home.location']. Skipping J2S Plugin Check.")
     }
-    def eclipseJ2sPlugin = "${eclipseHome}/dropins/${j2sPluginFile.getName()}"
-    def eclipseJ2sPluginFile = file(eclipseJ2sPlugin)
-    if (!eclipseJ2sPluginFile.exists()) {
-      def msg = "Eclipse J2S Plugin is not installed (could not find '${eclipseJ2sPlugin}')\nTry running task jalviewjsIDE_copyJ2sPlugin"
+    def eclipseJ2sPluginDirs = [ "${eclipseHome}/dropins" ]
+    def altPluginsDir = System.properties["org.eclipse.equinox.p2.reconciler.dropins.directory"]
+    if (altPluginsDir != null && file(altPluginsDir).exists()) {
+      eclipseJ2sPluginDirs += altPluginsDir
+    }
+    def foundPlugin = false
+    def j2sPluginFileName = j2sPluginFile.getName()
+    def eclipseJ2sPlugin
+    def eclipseJ2sPluginFile
+    eclipseJ2sPluginDirs.any { dir ->
+      eclipseJ2sPlugin = "${dir}/${j2sPluginFileName}"
+      eclipseJ2sPluginFile = file(eclipseJ2sPlugin)
+      if (eclipseJ2sPluginFile.exists()) {
+        foundPlugin = true
+        return true
+      }
+    }
+    if (!foundPlugin) {
+      def msg = "Eclipse J2S Plugin is not installed (could not find '${j2sPluginFileName}' in\n"+eclipseJ2sPluginDirs.join("\n")+"\n)\nTry running task jalviewjsIDE_copyJ2sPlugin"
       System.err.println(msg)
       throw new StopExecutionException(msg)
     }
@@ -2857,7 +2872,7 @@ task jalviewjsIDE_checkJ2sPlugin {
       System.err.println(msg)
       throw new StopExecutionException(msg)
     } else {
-      def msg = "Eclipse J2S Plugin is the same as '${j2sPlugin}' (this is good)"
+      def msg = "Eclipse J2S Plugin '${eclipseJ2sPlugin}' is the same as '${j2sPlugin}' (this is good)"
       println(msg)
     }
   }
-- 
1.7.10.2