Return random filename if sanitized filename would be empty

1 files changed, 8 insertions, 5 deletions

diff --git a/core/src/main/java/de/danoeh/antennapod/core/util/FileNameGenerator.java b/core/src/main/java/de/danoeh/antennapod/core/util/FileNameGenerator.java
index 8da176c82..a93dd8ee3 100644
--- a/core/src/main/java/de/danoeh/antennapod/core/util/FileNameGenerator.java
+++ b/core/src/main/java/de/danoeh/antennapod/core/util/FileNameGenerator.java
@@ -1,10 +1,9 @@
 package de.danoeh.antennapod.core.util;
 
-import org.apache.commons.lang3.ArrayUtils;
+import android.text.TextUtils;
 
-import java.util.Arrays;
-import java.util.regex.Matcher;
-import java.util.regex.Pattern;
+import org.apache.commons.lang3.ArrayUtils;
+import org.apache.commons.lang3.RandomStringUtils;
 
 /** Generates valid filenames for a given string. */
 public class FileNameGenerator {
@@ -33,7 +32,11 @@ public class FileNameGenerator {
 				buf.append(c);
 			}
 		}
-		return buf.toString().trim();
+		String filename = buf.toString().trim();
+		if(TextUtils.isEmpty(filename)) {
+			return RandomStringUtils.randomAlphanumeric(8);
+		}
+		return filename;
 	}
 
 }