[batoto] a few fixes

- removed 'volume' fields from default format strings
- fixed parsing  by making volumes optional
- removed debug output
- updated docstring
- added a few unescape calls

gallery_dl/extractor/batoto.py

@@ -10,7 +10,7 @@
 
 from .common import AsynchronousExtractor
 from .common import Message
-from .common import filename_from_url
+from .common import filename_from_url, unescape
 from urllib.parse import unquote
 import os.path
 import re
@@ -18,9 +18,8 @@ import re
 info = {
     "category": "batoto",
     "extractor": "BatotoExtractor",
-    "directory": ["{category}", "{manga}",
-                  "v{volume:>02} c{chapter:>03} - {title}"],
-    "filename": "{manga}_v{volume:>02}_c{chapter:>03}_{page:>03}.{extension}",
+    "directory": ["{category}", "{manga}", "c{chapter:>03} - {title}"],
+    "filename": "{manga}_c{chapter:>03}_{page:>03}.{extension}",
     "pattern": [
         r"(?:https?://)?(?:www\.)?bato\.to/read/_/(\d+).*",
     ],
@@ -39,12 +38,11 @@ class BatotoExtractor(AsynchronousExtractor):
         url = self.url_base + self.chapter_id
         while url:
             url, data = self.get_page_metadata(url)
-            print(data)
             yield Message.Directory, data
             yield Message.Url, data["image-url"], data
 
     def get_page_metadata(self, page_url):
-        """Collect metadata for one manga-page"""
+        """Collect next url and metadata for one manga-page"""
         page = self.request(page_url).text
         _    , pos = self.extract(page, 'selected="selected"', '')
         title, pos = self.extract(page, ': ', '<', pos)
@@ -53,20 +51,27 @@ class BatotoExtractor(AsynchronousExtractor):
         _    , pos = self.extract(page, '<div id="full_image"', '', pos)
         image, pos = self.extract(page, '<img src="', '"', pos)
         url  , pos = self.extract(page, '<a href="', '"', pos)
-        mmatch = re.search(r"<title>(.+) - vol (\d+) ch (\d+) Page (\d+)", page)
-        tmatch = re.match(r"(.+) - ([^ ]+)", trans)
+        mmatch = re.search(
+            r"<title>(.+) - (?:vol (\d+) )?"
+            r"ch (\d+)[^ ]+ Page (\d+) | Batoto!</title>",
+            page
+        )
+        tmatch = re.match(
+            r"(.+) - ([^ ]+)",
+            trans
+        )
         filename = unquote(filename_from_url(image))
         name, ext = os.path.splitext(filename)
         return url, {
             "category": info["category"],
             "chapter-id": self.chapter_id,
-            "manga": mmatch.group(1),
-            "volume": mmatch.group(2),
+            "manga": unescape(mmatch.group(1)),
+            "volume": mmatch.group(2) or "",
             "chapter": mmatch.group(3),
             "page": mmatch.group(4),
             "group": tmatch.group(1),
             "language": tmatch.group(2),
-            "title": title,
+            "title": unescape(title),
             "image-url": image,
             "name": name,
             "extension": ext[1:],