Mon Jun 13 22:58:13 UTC 2011  pix@kepibu.org
  * Move automatic URL classification into its own function.
diff -rN -u old-claki/claki.lisp new-claki/claki.lisp
--- old-claki/claki.lisp	2015-04-17 15:43:50.000000000 +0000
+++ new-claki/claki.lisp	2015-04-17 15:43:50.000000000 +0000
@@ -52,25 +52,31 @@
                              ("#footer > b" . #t(list ?b))) page)
         (let ((current-version (oh-ducks.traversal:element-content b)))
           (dolist (link a)
-            (let ((url (oh-ducks.traversal:element-attribute :href link))
-                  (rel (oh-ducks.traversal:element-attribute :rel link)))
+            (let ((url (oh-ducks.traversal:element-attribute :href link)))
               (cond
                 ((or (gethash url *okay-urls*)
                      (gethash (url-domain url) *okay-urls*))
                  #+(or) (do-nothing))
                 ((or (gethash url *spam-urls*)
-                     (gethash (url-domain url) *spam-urls*))
-                 (pushnew (list page-url current-version) *has-spam* :test #'equal))
-                ((and (stringp rel)
-                      (or (string-equal "follow" rel)
-                          (string-equal "dofollow" rel)))
-                 (setf (gethash url *spam-urls*) t)
+                     (gethash (url-domain url) *spam-urls*)
+                     (auto-classify link))
                  (pushnew (list page-url current-version) *has-spam* :test #'equal))
                 (t
                  (pushnew (list url page-url current-version) *urls-to-classify* :test #'equal)))))))))
 
 #+(or) (parse-page "araneida")
 
+(defun auto-classify (link)
+  "Auto-classify URLs based upon traits common to spammers."
+  (let ((rel (oh-ducks.traversal:element-attribute :rel link))
+        (url (oh-ducks.traversal:element-attribute :href link)))
+    (cond
+      ((and (stringp rel)
+            (or (string-equal "follow" rel)
+                (string-equal "dofollow" rel)))
+       (setf (gethash url *spam-urls*) t))
+      (t nil))))
+
 (defun request-classification (url)
   (restart-case (error 'simple-error :format-control "Please classify the URL ~s."
                        :format-arguments (list url))