[wikimedia] add 'wiki' extractor

gallery_dl/extractor/wikimedia.py

@@ -193,3 +193,19 @@ class WikimediaArticleExtractor(WikimediaExtractor):
     def prepare(self, image):
         WikimediaExtractor.prepare(image)
         image["page"] = self.title
+
+
+class WikimediaWikiExtractor(WikimediaExtractor):
+    """Extractor for all files on a MediaWiki instance"""
+    subcategory = "wiki"
+    pattern = BASE_PATTERN + r"/?$"
+    example = "https://en.wikipedia.org/"
+
+    def __init__(self, match):
+        WikimediaExtractor.__init__(self, match)
+
+        # ref: https://www.mediawiki.org/wiki/API:Allpages
+        self.params = {
+            "generator"   : "allpages",
+            "gapnamespace": 6,  # "File" namespace
+        }

test/results/fandom.py

@@ -98,4 +98,12 @@ __tests__ = (
     "#class"   : wikimedia.WikimediaArticleExtractor,
 },
 
+{
+    "#url"     : "https://youtube.fandom.com",
+    "#category": ("wikimedia", "fandom-youtube", "wiki"),
+    "#class"   : wikimedia.WikimediaWikiExtractor,
+    "#range"   : "1-20",
+    "#count"   : 20,
+},
+
 )

test/results/wikipedia.py

@@ -50,4 +50,12 @@ __tests__ = (
     "#class"   : wikimedia.WikimediaArticleExtractor,
 },
 
+{
+    "#url"     : "https://en.wikipedia.org",
+    "#category": ("wikimedia", "wikipedia", "wiki"),
+    "#class"   : wikimedia.WikimediaWikiExtractor,
+    "#range"   : "1-10",
+    "#count"   : 10,
+},
+
 )