Directories named after albums are sanitized first

src/main/java/com/rarchives/ripme/ripper/AbstractRipper.java

@@ -264,7 +264,9 @@ public abstract class AbstractRipper
         if (!path.endsWith(File.separator)) {
             path += File.separator;
         }
-        path += getAlbumTitle(this.url) + File.separator;
+        String title = getAlbumTitle(this.url);
+        title = Utils.filesystemSafe(title);
+        path += title + File.separator;
         this.workingDir = new File(path);
         if (!this.workingDir.exists()) {
             logger.info("[+] Creating directory: " + Utils.removeCWD(this.workingDir));

src/main/java/com/rarchives/ripme/utils/Utils.java

@@ -241,4 +241,10 @@ public class Utils {
                 + "..."
                 + path.substring(path.length() - SHORTENED_PATH_LENGTH);
     }
+    
+    public static String filesystemSafe(String text) {
+        return text.replaceAll("[^a-zA-Z0-9.-]", "_")
+                   .replaceAll("__", "_")
+                   .replaceAll("_+$", "");
+    }
 }