Replaced fuzzyExists and Fixed regex in redgifs user and search

- Added a dot in redgifs regex to account for them in usernames and
  search queries
- Replaced fuzzyExists with better library efficient call that check the
  folder for existing file

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

@@ -5,6 +5,7 @@ import java.net.HttpURLConnection;
 import java.net.SocketTimeoutException;
 import java.net.URL;
 import java.net.URLConnection;
+import java.nio.file.Paths;
 import java.util.Arrays;
 import java.util.HashMap;
 import java.util.Map;
@@ -79,7 +80,7 @@ class DownloadFileThread extends Thread {
             return;
         }
         if (saveAs.exists() && !observer.tryResumeDownload() && !getFileExtFromMIME
-                || Utils.fuzzyExists(new File(saveAs.getParent()), saveAs.getName()) && getFileExtFromMIME
+                || Utils.fuzzyExistsBetter(Paths.get(saveAs.getParent()), saveAs.getName()) && getFileExtFromMIME
                         && !observer.tryResumeDownload()) {
             if (Utils.getConfigBoolean("file.overwrite", false)) {
                 logger.info("[!] " + Utils.getLocalizedString("deleting.existing.file") + prettySaveAs);

src/main/java/com/rarchives/ripme/ripper/rippers/RedgifsRipper.java

@@ -55,12 +55,12 @@ public class RedgifsRipper extends AbstractHTMLRipper {
     }
 
     public Matcher isProfile() {
-        Pattern p = Pattern.compile("^https?://[wm.]*redgifs\\.com/users/([a-zA-Z0-9_-]+).*$");
+        Pattern p = Pattern.compile("^https?://[wm.]*redgifs\\.com/users/([a-zA-Z0-9_.-]+).*$");
         return p.matcher(url.toExternalForm());
     }
 
     public Matcher isSearch() {
-        Pattern p = Pattern.compile("^https?://[wm.]*redgifs\\.com/gifs/browse/([a-zA-Z0-9_-]+).*$");
+        Pattern p = Pattern.compile("^https?://[wm.]*redgifs\\.com/gifs/browse/([a-zA-Z0-9_.-]+).*$");
         return p.matcher(url.toExternalForm());
     }
 
@@ -131,7 +131,7 @@ public class RedgifsRipper extends AbstractHTMLRipper {
                        .ignoreContentType().get();
             return (hasURLs(d).isEmpty()) ? null : d;
         } else {
-            if (cursor.equals("")) {
+            if (cursor.equals("") || cursor.equals("null")) {
                 return null;
             } else {
                 Document d =  Http.url(new URL("https://napi.redgifs.com/v1/users/" +  username + "/gfycats?count=" + count + "&cursor=" + cursor)).ignoreContentType().get();
@@ -170,7 +170,7 @@ public class RedgifsRipper extends AbstractHTMLRipper {
         for (int i = 0; i < content.length(); i++) {
             result.add(content.getJSONObject(i).getString("mp4Url"));
         }
-        cursor = page.getString("cursor");
+        cursor = page.get("cursor").toString();
         return result;
     }
 

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

@@ -880,6 +880,10 @@ public class Utils {
         return false;
     }
 
+    public static boolean fuzzyExistsBetter(Path folder, String filename) {
+        return Files.exists(folder.resolve(filename));
+    }
+
     public static String sanitizeSaveAs(String fileNameToSan) {
         return fileNameToSan.replaceAll("[\\\\/:*?\"<>|]", "_");
     }

src/test/java/com/rarchives/ripme/tst/ripper/rippers/RedditRipperTest.java

@@ -60,6 +60,17 @@ public class RedditRipperTest extends RippersTest {
         testRipper(ripper);
     }
 
+    /**
+     * GFYCAT TEST Tests a gfycat URL with the gifdeliverynetwork/redgifs hosted video
+     *
+     * @throws IOException
+     */
+    @Test
+    public void testRedditGfycatRedirectURL() throws IOException {
+        RedditRipper ripper = new RedditRipper(
+                new URL("https://www.reddit.com/r/NSFW_GIF/comments/ennwsa/gorgeous_tits/"));
+    }
+
     @Test
     @Tag("flaky")
     public void testRedditGallery() throws IOException{