Fix divide by null issue

patrickfav · Sep 28, 2017 · 31893df · 31893df
1 parent b92c442
commit 31893df
Showing 1 changed file with 4 additions and 5 deletions.
diff --git a/src/main/java/at/favre/tools/dice/RndTool.java b/src/main/java/at/favre/tools/dice/RndTool.java
@@ -114,11 +114,11 @@ static boolean execute(Arg arguments) {
         return true;
     }
 
-
     private static void wrapInErrorHandling(Arg arguments, Callable r) {
         try {
             r.call();
         } catch (Exception e) {
+
             System.err.print("Could not create random bits.");
 
             if (e.getMessage() != null) {
@@ -136,6 +136,7 @@ private static void wrapInErrorHandling(Arg arguments, Callable r) {
         }
     }
 
+
     private static void fetch(final List<ServiceHandler<?>> handlers, final Arg arguments, final EntropyPool entropyPool,
                               final Encoder encoder, final long start) {
         print("Fetch external seed: ", arguments);
@@ -222,13 +223,11 @@ private static void printRandoms(Arg arguments, Encoder encoder, DeterministicRa
                 printStream.close();
             }
         }
-
-
     }
 
     @NotNull
     private static String getSummary(Arg arguments, long durationMs, long durationRndGen, long byteGen) {
-        double bandwidth = Math.round(byteGen / durationRndGen / 10.24) / 100.0;
+        double bandwidth = durationRndGen == 0 || byteGen == 0 ? 0 : Math.round(byteGen / durationRndGen / 10.24) / 100.0;
         return System.lineSeparator() + System.lineSeparator() + "[" + getFriendlyFormattedDate() + "][" + MiscUtil.jarVersion() + "] " + byteGen + " bytes generated in " + durationMs + " ms." + (bandwidth > 0 ? " (" + bandwidth + " MB/s)" : "");
     }
 
@@ -244,4 +243,4 @@ private static String getFriendlyFormattedDate() {
         SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss z");
         return sdf.format(new Date());
     }
-}
+}