[exhentai] add 'domain' option (#897)

docs/configuration.rst

@@ -726,6 +726,18 @@ Description Minimum wait time in seconds before API requests.
 =========== =====
 
 
+extractor.exhentai.domain
+-------------------------
+=========== =====
+Type        ``string``
+Default     ``"auto"``
+Description * ``"auto"``: Use ``e-hentai.org`` or ``exhentai.org``
+              depending on the input URL
+            * ``"e-hentai.org"``: Use ``e-hentai.org`` for all URLs
+            * ``"exhentai.org"``: Use ``exhentai.org`` for all URLs
+=========== =====
+
+
 extractor.exhentai.limits
 -------------------------
 =========== =====

docs/gallery-dl.conf

@@ -44,6 +44,8 @@
         {
             "username": null,
             "password": null,
+            "domain": "auto",
+            "limits": true,
             "original": true,
             "wait-min": 3.0,
             "wait-max": 6.0

gallery_dl/extractor/exhentai.py

@@ -35,9 +35,12 @@ class ExhentaiExtractor(Extractor):
 
     def __init__(self, match):
         version = match.group(1)
-        if version != "ex":
-            self.root = "https://e-hentai.org"
-            self.cookiedomain = ".e-hentai.org"
+        domain = self.config("domain", "auto")
+        if domain == "auto":
+            domain = ("ex" if version == "ex" else "e-") + "hentai.org"
+        self.root = "https://" + domain
+        self.cookiedomain = "." + domain
+
         Extractor.__init__(self, match)
         self.limits = self.config("limits", True)
         self.original = self.config("original", True)