X-Git-Url: http://source.jalview.org/gitweb/?a=blobdiff_plain;f=src%2Fjalview%2Fio%2FFileLoader.java;fp=src%2Fjalview%2Fio%2FFileLoader.java;h=3aded0554660b2765d70c26c49c7e596488f6b60;hb=4f6267811207426a9670a89c875e74a634e544e9;hp=18ab642be987901d19a54679c0f5ba8e98ec774f;hpb=946d983b176eeda08ae0af13aff6cd1c9e017806;p=jalview.git

diff --git a/src/jalview/io/FileLoader.java b/src/jalview/io/FileLoader.java
index 18ab642..3aded05 100755
--- a/src/jalview/io/FileLoader.java
+++ b/src/jalview/io/FileLoader.java
@@ -22,6 +22,7 @@ package jalview.io;
 
 import jalview.api.ComplexAlignFile;
 import jalview.api.FeaturesDisplayedI;
+import jalview.bin.Jalview;
 import jalview.datamodel.AlignmentI;
 import jalview.datamodel.ColumnSelection;
 import jalview.datamodel.PDBEntry;
@@ -257,6 +258,21 @@ public class FileLoader implements Runnable
         {
           format = new IdentifyFile().Identify(file, protocol);
         }
+
+      }
+
+      if (format == null || format.equalsIgnoreCase("EMPTY DATA FILE"))
+      {
+        Desktop.instance.stopLoading();
+        System.err.println("The input file \"" + file
+                + "\" has no data content!");
+        if (!Jalview.isHeadlessMode())
+        {
+          JOptionPane.showMessageDialog(null, "The input file \""
+                  + file + "\" has no data content!", "Empty data file",
+                  JOptionPane.ERROR_MESSAGE);
+        }
+        return;
       }
       // TODO: cache any stream datasources as a temporary file (eg. PDBs
       // retrieved via URL)