[hellporno] simplify

youtube_dl/extractor/hellporno.py

@@ -1,55 +1,51 @@
 from __future__ import unicode_literals
-
-import re
-
 from .common import InfoExtractor
 
+
 class HellPornoIE(InfoExtractor):
-    _VALID_URL = r'https?://(?:www\.)?hellporno\.com/videos/(?P<display_id>[^/]+)'
+    _VALID_URL = r'https?://(?:www\.)?hellporno\.com/videos/(?P<id>[^/]+)'
     _TEST = {
         'url': 'http://hellporno.com/videos/dixie-is-posing-with-naked-ass-very-erotic/',
         'md5': '1fee339c610d2049699ef2aa699439f1',
         'info_dict': {
             'id': '149116',
+            'display_id': 'dixie-is-posing-with-naked-ass-very-erotic',
             'ext': 'mp4',
             'title': 'Dixie is posing with naked ass very erotic',
-            'description': 'md5:5ba02cbf31eff820147b3cc25306d89a',
-            'categories': list,  # NSFW
             'thumbnail': 're:https?://.*\.jpg$',
             'age_limit': 18,
         }
     }
 
     def _real_extract(self, url):
-        webpage = self._download_webpage(url, 'main')
+        display_id = self._match_id(url)
+        webpage = self._download_webpage(url, display_id)
 
-        video_id = self._html_search_regex(r'video_id:\s*\'([^\']+)\'', webpage, 'id')
+        video_id = self._html_search_regex(
+            r'video_id:\s*\'([^\']+)\'', webpage, 'id')
 
-        video_url = self._html_search_regex(r'video_url:\s*\'([^\']+)\'', webpage, 'video_url')
+        ext = self._html_search_regex(
+            r'postfix:\s*\'([^\']+)\'', webpage, 'ext')[1:]
 
-        ext = self._html_search_regex(r'postfix:\s*\'([^\']+)\'', webpage, 'ext')[1:]
+        video_url = self._html_search_regex(
+            r'video_url:\s*\'([^\']+)\'', webpage, 'video_url')
 
         title = self._html_search_regex(
             r'<title>([^<]+)\s*-\s*Hell Porno</title>', webpage, 'title')
 
-        description = self._html_search_meta('description', webpage, 'description', fatal=False)
-
         thumbnail = self._html_search_regex(
             r'preview_url:\s*\'([^\']+)\'',
             webpage, 'thumbnail', fatal=False)
 
-        categories_str = self._html_search_regex(
-            r'<meta name="keywords" content="([^"]+)"', webpage, 'categories', fatal=False)
-        categories = (
-            None if categories_str is None
-            else categories_str.split(','))
+        categories = self._html_search_meta(
+            'keywords', webpage, 'categories', default='').split(',')
 
         return {
             'id': video_id,
+            'display_id': display_id,
             'url': video_url,
             'title': title,
             'ext': ext,
-            'description': description,
             'thumbnail': thumbnail,
             'categories': categories,
             'age_limit': 18,