From a62885eb85c5c25d949c1718a72e8af81a359ef3 Mon Sep 17 00:00:00 2001
From: TatianaBurek <tatiana@ucar.edu>
Date: Mon, 16 Oct 2023 14:09:08 -0600
Subject: [PATCH] add error messages to GUI Log output  #495

---
 java/edu/ucar/metviewer/MVUtil.java     | 12 +++++++++---
 java/edu/ucar/metviewer/MvResponse.java |  4 ++--
 2 files changed, 11 insertions(+), 5 deletions(-)

diff --git a/java/edu/ucar/metviewer/MVUtil.java b/java/edu/ucar/metviewer/MVUtil.java
index 7640afed..607c1b16 100644
--- a/java/edu/ucar/metviewer/MVUtil.java
+++ b/java/edu/ucar/metviewer/MVUtil.java
@@ -1872,12 +1872,18 @@ public static MvResponse runRscript(
     }
     if (strProcStd.length() > 0) {
       mvResponse.setInfoMessage(
-              "==== Start " + type + " output  ====\n" + strProcStd + "====   End " + type + " output  ====");
+              "\n==== Start " + type + " output  ====\n" + strProcStd + "====   End " + type + " output  ====\n");
     }
-
+    // add errors if they exist - only the last line
     if (strProcErr.length() > 0) {
+      String[] errorLines = strProcErr.toString().split("\\r?\\n|\\r");
+      mvResponse.setInfoMessage(
+              mvResponse.getInfoMessage() + "\n==== Start " + type + " ERROR  ====\n" + errorLines[errorLines.length-1] + "\n====   End " + type + " error  ====\n"
+
+      );
+
       mvResponse.setErrorMessage(
-              "==== Start " + type + " error  ====\n" + strProcErr + "====   End " + type + " error  ====");
+              "==== Start " + type + " error  ====\n" + strProcErr + "====   End " + type + " ERROR  ====");
     }
     mvResponse.setSuccess(0 == intExitStatus);
     return mvResponse;
diff --git a/java/edu/ucar/metviewer/MvResponse.java b/java/edu/ucar/metviewer/MvResponse.java
index 6c0aaa25..f565f713 100644
--- a/java/edu/ucar/metviewer/MvResponse.java
+++ b/java/edu/ucar/metviewer/MvResponse.java
@@ -13,8 +13,8 @@
 public class MvResponse {
 
   private boolean success = false;
-  private String infoMessage;
-  private String errorMessage;
+  private String infoMessage = "";
+  private String errorMessage = "";
 
   public boolean isSuccess() {
     return success;