add 'category-map' option

primarily to achieve some form of backwards compatibility for
922c296482

docs/configuration.rst

@@ -7484,6 +7484,22 @@ Description
     or by `extractor.modules`_.
 
 
+extractor.category-map
+----------------------
+Type
+    ``object`` (`category` -> `category`)
+Default
+    .. code:: json
+
+        {
+            "coomerparty": "coomer",
+            "kemonoparty": "kemono",
+            "koharu"     : "schalenetwork"
+        }
+Description
+    A JSON ``object`` mapping category names to their replacements.
+
+
 globals
 -------
 Type

docs/gallery-dl.conf

@@ -79,6 +79,11 @@
         "actions": [],
         "input"  : null,
         "netrc"  : false,
+        "category-map": {
+            "coomerparty": "coomer",
+            "kemonoparty": "kemono",
+            "koharu"     : "schalenetwork"
+        },
         "extension-map": {
             "jpeg": "jpg",
             "jpe" : "jpg",

gallery_dl/__init__.py

@@ -188,6 +188,17 @@ def main():
             ujob = update.UpdateJob(extr)
             return ujob.run()
 
+        # category remapping
+        cmap = config.interpolate(("extractor",), "category-map")
+        if cmap is None:
+            cmap = {
+                "coomerparty": "coomer",
+                "kemonoparty": "kemono",
+                "koharu"     : "schalenetwork",
+            }
+        if cmap:
+            config.rename_categories(cmap)
+
         # extractor modules
         modules = config.get(("extractor",), "modules")
         if modules is not None:

gallery_dl/config.py

@@ -162,6 +162,16 @@ def status():
         stdout_write(fmt(path, status))
 
 
+def rename_categories(cmap):
+    opts = _config.get("extractor")
+    if not opts:
+        return
+
+    for old, new in cmap.items():
+        if old in opts and new not in opts:
+            opts[new] = opts[old]
+
+
 def load(files=None, strict=False, loads=util.json_loads):
     """Load JSON configuration files"""
     for pathfmt in files or _default_configs: