Added a ripper for hentaifox.com

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

@@ -0,0 +1,65 @@
+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 HentaifoxRipper extends AbstractHTMLRipper {
+
+    public HentaifoxRipper(URL url) throws IOException {
+        super(url);
+    }
+
+    @Override
+    public String getHost() {
+        return "hentaifox";
+    }
+
+    @Override
+    public String getDomain() {
+        return "hentaifox.com";
+    }
+
+    @Override
+    public String getGID(URL url) throws MalformedURLException {
+        Pattern p = Pattern.compile("https://hentaifox.com/gallery/([\\d]+)/?");
+        Matcher m = p.matcher(url.toExternalForm());
+        if (m.matches()) {
+            return m.group(1);
+        }
+        throw new MalformedURLException("Expected hentaifox URL format: " +
+                "https://hentaifox.com/gallery/ID - got " + url + " instead");
+    }
+
+    @Override
+    public Document getFirstPage() throws IOException {
+        // "url" is an instance field of the superclass
+        return Http.url(url).get();
+    }
+
+    @Override
+    public List<String> getURLsFromPage(Document doc) {
+        LOGGER.info(doc);
+        List<String> result = new ArrayList<>();
+        for (Element el : doc.select("div.preview_thumb > a > img")) {
+                String imageSource = "https:" + el.attr("data-src").replaceAll("t\\.jpg", ".jpg");
+                result.add(imageSource);
+            }
+        return result;
+    }
+
+    @Override
+    public void downloadURL(URL url, int index) {
+        addURLToDownload(url, getPrefix(index));
+    }
+}