[newgrounds] Fix uploader extraction

Closes #10584

Also change test URLs to HTTPS, as proposed by
@stepshal in #10593.

Closes #10593

ChangeLog

@@ -1,3 +1,9 @@
+version <unreleased>
+
+Extractors
+* [newgrounds] Fix uploader extraction (#10584)
+
+
 version 2016.09.08
 
 Extractors

youtube_dl/extractor/newgrounds.py

@@ -1,15 +1,12 @@
 from __future__ import unicode_literals
 
-import json
-import re
-
 from .common import InfoExtractor
 
 
 class NewgroundsIE(InfoExtractor):
     _VALID_URL = r'https?://(?:www\.)?newgrounds\.com/(?:audio/listen|portal/view)/(?P<id>[0-9]+)'
     _TESTS = [{
-        'url': 'http://www.newgrounds.com/audio/listen/549479',
+        'url': 'https://www.newgrounds.com/audio/listen/549479',
         'md5': 'fe6033d297591288fa1c1f780386f07a',
         'info_dict': {
             'id': '549479',
@@ -18,7 +15,7 @@ class NewgroundsIE(InfoExtractor):
             'uploader': 'Burn7',
         }
     }, {
-        'url': 'http://www.newgrounds.com/portal/view/673111',
+        'url': 'https://www.newgrounds.com/portal/view/673111',
         'md5': '3394735822aab2478c31b1004fe5e5bc',
         'info_dict': {
             'id': '673111',
@@ -29,24 +26,20 @@ class NewgroundsIE(InfoExtractor):
     }]
 
     def _real_extract(self, url):
-        mobj = re.match(self._VALID_URL, url)
-        music_id = mobj.group('id')
-        webpage = self._download_webpage(url, music_id)
+        media_id = self._match_id(url)
+        webpage = self._download_webpage(url, media_id)
 
         title = self._html_search_regex(
             r'<title>([^>]+)</title>', webpage, 'title')
 
         uploader = self._html_search_regex(
-            [r',"artist":"([^"]+)",', r'[\'"]owner[\'"]\s*:\s*[\'"]([^\'"]+)[\'"],'],
-            webpage, 'uploader')
+            r'Author\s*<a[^>]+>([^<]+)', webpage, 'uploader', fatal=False)
 
-        music_url_json_string = self._html_search_regex(
-            r'({"url":"[^"]+"),', webpage, 'music url') + '}'
-        music_url_json = json.loads(music_url_json_string)
-        music_url = music_url_json['url']
+        music_url = self._parse_json(self._search_regex(
+            r'"url":("[^"]+"),', webpage, ''), media_id)
 
         return {
-            'id': music_id,
+            'id': media_id,
             'title': title,
             'url': music_url,
             'uploader': uploader,