[vipergirls] provide 'num' and 'count' metadata (#7479)

gallery_dl/extractor/vipergirls.py

@@ -57,17 +57,18 @@ class VipergirlsExtractor(Extractor):
             util.advance(posts, (text.parse_int(self.page[5:]) - 1) * 15)
 
         for post in posts:
+            images = list(post)
+
             data = post.attrib
             data["thread_id"] = self.thread_id
+            data["count"] = len(images)
 
             yield Message.Directory, data
-
-            image = None
-            for image in post:
-                yield Message.Queue, image.attrib["main_url"], data
-
-            if image is not None and like:
-                self.like(post, user_hash)
+            if images:
+                for data["num"], image in enumerate(images, 1):
+                    yield Message.Queue, image.attrib["main_url"], data
+                if like:
+                    self.like(post, user_hash)
 
     def login(self):
         if self.cookies_check(self.cookies_names):

test/results/vipergirls.py

@@ -14,6 +14,9 @@ __tests__ = (
     "#class"   : vipergirls.VipergirlsThreadExtractor,
     "#count"   : 225,
     "#sha1_url": "0d75cb42777f5bebc0d284d1d38cb90c750c61d9",
+
+    "count": {112, 113},
+    "num"  : range(1, 113),
 },
 
 {
@@ -49,6 +52,8 @@ __tests__ = (
     "#range"   : "2-113",
     "#count"   : 112,
 
+    "count"     : 113,
+    "num"       : range(2, 113),
     "id"        : "116038081",
     "imagecount": "113",
     "number"    : "116038081",