[e621] support e621.cc and e621.anthro.fr frontend URLs (#6809)

docs/supportedsites.md

@@ -1184,7 +1184,7 @@ Consider all listed sites to potentially be NSFW.
 <tr>
     <td>e621</td>
     <td>https://e621.net/</td>
-    <td>Favorites, Pools, Popular Images, Posts, Tag Searches</td>
+    <td>Favorites, Pools, Popular Images, Posts, Tag Searches, Frontends</td>
     <td>Supported</td>
 </tr>
 <tr>

gallery_dl/extractor/e621.py

@@ -8,7 +8,7 @@
 
 """Extractors for https://e621.net/ and other e621 instances"""
 
-from .common import Message
+from .common import Extractor, Message
 from . import danbooru
 from ..cache import memcache
 from .. import text, util
@@ -156,3 +156,20 @@ def metadata(self):
 
     def posts(self):
         return self._pagination("/favorites.json", self.query)
+
+
+class E621FrontendExtractor(Extractor):
+    """Extractor for alternative e621 frontends"""
+    basecategory = "E621"
+    category = "e621"
+    subcategory = "frontend"
+    pattern = r"(?:https?://)?e621\.(?:cc/\?tags|anthro\.fr/\?q)=([^&#]*)"
+    example = "https://e621.cc/?tags=TAG"
+
+    def initialize(self):
+        pass
+
+    def items(self):
+        url = "https://e621.net/posts?tags=" + self.groups[0]
+        data = {"_extractor": E621TagExtractor}
+        yield Message.Queue, url, data

scripts/supportedsites.py

@@ -578,6 +578,9 @@ def build_extractor_list():
     default["wikifeetx"] = default["wikifeet"]
     domains["wikifeetx"] = "https://www.wikifeetx.com/"
 
+    # add extra e621 extractors
+    categories["E621"]["e621"].extend(default.pop("e621", ()))
+
     return categories, domains
 
 

test/results/E621.py

@@ -0,0 +1,25 @@
+# -*- coding: utf-8 -*-
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 as
+# published by the Free Software Foundation.
+
+from gallery_dl.extractor import e621
+
+
+__tests__ = (
+{
+    "#url"     : "https://e621.cc/?tags=rating:safe",
+    "#category": ("E621", "e621", "frontend"),
+    "#class"   : e621.E621FrontendExtractor,
+    "#urls"    : "https://e621.net/posts?tags=rating:safe",
+},
+
+{
+    "#url"     : "https://e621.anthro.fr/?q=rating:safe",
+    "#category": ("E621", "e621", "frontend"),
+    "#class"   : e621.E621FrontendExtractor,
+    "#urls"    : "https://e621.net/posts?tags=rating:safe",
+},
+
+)