Added sinfest ripper

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

@@ -0,0 +1,80 @@
+package com.rarchives.ripme.ripper.rippers;
+
+import java.io.IOException;
+import java.net.MalformedURLException;
+import java.net.URL;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+import org.jsoup.nodes.Document;
+import org.jsoup.nodes.Element;
+
+import com.rarchives.ripme.ripper.AbstractHTMLRipper;
+import com.rarchives.ripme.utils.Http;
+
+public class SinfestRipper extends AbstractHTMLRipper {
+
+    public SinfestRipper(URL url) throws IOException {
+        super(url);
+    }
+
+    @Override
+    public String getHost() {
+        return "sinfest";
+    }
+
+    @Override
+    public String getDomain() {
+        return "sinfest.net";
+    }
+
+    @Override
+    public String getGID(URL url) throws MalformedURLException {
+        Pattern p = Pattern.compile("https?://sinfest.net/view.php\\?date=([0-9-]*)/?");
+        Matcher m = p.matcher(url.toExternalForm());
+        if (m.matches()) {
+            return m.group(1);
+        }
+        throw new MalformedURLException("Expected sinfest URL format: " +
+                "sinfest.net/view.php?date=XXXX-XX-XX/ - got " + url + " instead");
+    }
+
+    @Override
+    public Document getFirstPage() throws IOException {
+        // "url" is an instance field of the superclass
+        return Http.url(url).get();
+    }
+
+    @Override
+    public Document getNextPage(Document doc) throws IOException {
+        Element elem = doc.select("td.style5 > a > img").last();
+        logger.info(elem.parent().attr("href"));
+        if (elem == null || elem.parent().attr("href").equals("view.php?date=")) {
+            throw new IOException("No more pages");
+        }
+        String nextPage = elem.parent().attr("href");
+        // Some times this returns a empty string
+        // This for stops that
+        if (nextPage == "") {
+            return null;
+        }
+        else {
+            return Http.url("http://sinfest.net/" + nextPage).get();
+        }
+    }
+
+    @Override
+    public List<String> getURLsFromPage(Document doc) {
+        List<String> result = new ArrayList<>();
+        Element elem = doc.select("tbody > tr > td > img").last();
+        result.add("http://sinfest.net/" + elem.attr("src"));
+        return result;
+    }
+
+    @Override
+    public void downloadURL(URL url, int index) {
+        addURLToDownload(url, getPrefix(index));
+    }
+}