[ytdl] set domain as subcategory when using Generic extractor (#6582)

https://github.com/mikf/gallery-dl/issues/6582#issuecomment-2959879730

docs/configuration.rst

@@ -5707,12 +5707,24 @@ Type
 Default
     ``true``
 Description
-    Enables the use of |ytdl's| ``generic`` extractor.
+    Enables the use of |ytdl's| ``Generic`` extractor.
 
     Set this option to ``"force"`` for the same effect as
     ``--force-generic-extractor``.
 
 
+extractor.ytdl.generic-category
+-------------------------------
+Type
+    ``bool``
+Default
+    ``true``
+Description
+    When using |ytdl's| ``Generic`` extractor,
+    change `category` to ``"ytdl-generic"`` and
+    set `subcategory` to the input URL's domain.
+
+
 extractor.ytdl.logging
 ----------------------
 Type

docs/gallery-dl.conf

@@ -808,6 +808,7 @@
             "enabled"     : false,
             "format"      : null,
             "generic"     : true,
+            "generic-category": true,
             "logging"     : true,
             "module"      : null,
             "raw-options" : null

gallery_dl/extractor/ytdl.py

@@ -42,8 +42,14 @@ class YoutubeDLExtractor(Extractor):
                 raise exception.NoExtractorError()
             self.force_generic_extractor = False
 
-        # set subcategory to youtube_dl extractor's key
-        self.subcategory = self.ytdl_ie_key
+        if self.ytdl_ie_key == "Generic" and config.interpolate(
+                ("extractor", "ytdl"), "generic-category", True):
+            # set subcategory to URL domain
+            self.category = "ytdl-generic"
+            self.subcategory = url[url.rfind("/", None, 8)+1:url.find("/", 8)]
+        else:
+            # set subcategory to youtube_dl extractor's key
+            self.subcategory = self.ytdl_ie_key
         Extractor.__init__(self, match)
 
     def items(self):

test/results/ytdl.py

@@ -14,4 +14,10 @@ __tests__ = (
     "#class"   : ytdl.YoutubeDLExtractor,
 },
 
+{
+    "#url"     : "ytdl:http://media.w3.org/2010/05/sintel/trailer.mp4",
+    "#category": ("", "ytdl-generic", "media.w3.org"),
+    "#class"   : ytdl.YoutubeDLExtractor,
+},
+
 )