Merge pull request #450 from cyian-1756/san-url-history

Added the normalizeUrl func, which allows a ripper to normalize a url before adding it to url histroy/check if its in url history; The instagram ripper now uses this func

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

@@ -61,7 +61,13 @@ public abstract class AbstractRipper
         }
     }
 
+
+    /**
+     * Adds a URL to the url history file
+     * @param downloadedURL URL to check if downloaded
+     */
     private void writeDownloadedURL(String downloadedURL) throws IOException {
+        downloadedURL = normalizeUrl(downloadedURL);
         BufferedWriter bw = null;
         FileWriter fw = null;
         try {
@@ -86,6 +92,15 @@ public abstract class AbstractRipper
             }
         }
     }
+
+
+    /**
+     * Normalize a URL
+     * @param url URL to check if downloaded
+     */
+    public String normalizeUrl(String url) {
+        return url;
+    }
     
     /**
      * Checks to see if Ripme has already downloaded a URL
@@ -96,6 +111,7 @@ public abstract class AbstractRipper
      */
     private boolean hasDownloadedURL(String url) {
         File file = new File(URLHistoryFile);
+        url = normalizeUrl(url);
         try {
             Scanner scanner = new Scanner(file);
             while (scanner.hasNextLine()) {

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

@@ -52,6 +52,12 @@ public class InstagramRipper extends AbstractHTMLRipper {
         return san_url;
     }
 
+    @Override
+    public String normalizeUrl(String url) {
+        // Remove the date sig from the url
+        return url.replaceAll("/[A-Z0-9]{8}/", "/");
+    }
+
     private List<String> getPostsFromSinglePage(Document Doc) {
         List<String> imageURLs = new ArrayList<>();
         JSONArray datas;