[imgut:album] Add extractor (Closes #6711)

youtube_dl/extractor/__init__.py

@@ -241,7 +241,10 @@ from .imdb import (
     ImdbIE,
     ImdbListIE
 )
-from .imgur import ImgurIE
+from .imgur import (
+    ImgurIE,
+    ImgurAlbumIE,
+)
 from .ina import InaIE
 from .indavideo import (
     IndavideoIE,

youtube_dl/extractor/imgur.py

@@ -13,7 +13,7 @@ from ..utils import (
 
 
 class ImgurIE(InfoExtractor):
-    _VALID_URL = r'https?://(?:i\.)?imgur\.com/(?P<id>[a-zA-Z0-9]+)'
+    _VALID_URL = r'https?://(?:i\.)?imgur\.com/(?!gallery)(?P<id>[a-zA-Z0-9]+)'
 
     _TESTS = [{
         'url': 'https://i.imgur.com/A61SaA1.gifv',
@@ -97,3 +97,28 @@ class ImgurIE(InfoExtractor):
             'description': self._og_search_description(webpage),
             'title': self._og_search_title(webpage),
         }
+
+
+class ImgurAlbumIE(InfoExtractor):
+    _VALID_URL = r'https?://(?:i\.)?imgur\.com/gallery/(?P<id>[a-zA-Z0-9]+)'
+
+    _TEST = {
+        'url': 'http://imgur.com/gallery/Q95ko',
+        'info_dict': {
+            'id': 'Q95ko',
+        },
+        'playlist_count': 25,
+    }
+
+    def _real_extract(self, url):
+        album_id = self._match_id(url)
+
+        album_images = self._download_json(
+            'http://imgur.com/gallery/%s/album_images/hit.json?all=true' % album_id,
+            album_id)['data']['images']
+
+        entries = [
+            self.url_result('http://imgur.com/%s' % image['hash'])
+            for image in album_images if image.get('hash')]
+
+        return self.playlist_result(entries, album_id)