[extractor,cleanup] Use `_search_nextjs_data`

yt_dlp/extractor/common.py

@@ -1544,12 +1544,12 @@ class InfoExtractor(object):
 
         return dict((k, v) for k, v in info.items() if v is not None)
 
-    def _search_nextjs_data(self, webpage, video_id, **kw):
+    def _search_nextjs_data(self, webpage, video_id, *, transform_source=None, fatal=True, **kw):
         return self._parse_json(
             self._search_regex(
                 r'(?s)<script[^>]+id=[\'"]__NEXT_DATA__[\'"][^>]*>([^<]+)</script>',
-                webpage, 'next.js data', **kw),
-            video_id, **kw)
+                webpage, 'next.js data', fatal=fatal, **kw),
+            video_id, transform_source=transform_source, fatal=fatal)
 
     def _search_nuxt_data(self, webpage, video_id, context_name='__NUXT__'):
         ''' Parses Nuxt.js metadata. This works as long as the function __NUXT__ invokes is a pure function. '''

yt_dlp/extractor/itv.py

@@ -243,8 +243,8 @@ class ITVBTCCIE(InfoExtractor):
 
         webpage = self._download_webpage(url, playlist_id)
 
-        json_map = try_get(self._parse_json(self._html_search_regex(
-            '(?s)<script[^>]+id=[\'"]__NEXT_DATA__[^>]*>([^<]+)</script>', webpage, 'json_map'), playlist_id),
+        json_map = try_get(
+            self._search_nextjs_data(webpage, playlist_id),
             lambda x: x['props']['pageProps']['article']['body']['content']) or []
 
         entries = []

yt_dlp/extractor/nbc.py

@@ -408,9 +408,7 @@ class NBCNewsIE(ThePlatformIE):
         video_id = self._match_id(url)
         webpage = self._download_webpage(url, video_id)
 
-        data = self._parse_json(self._search_regex(
-            r'<script[^>]+id="__NEXT_DATA__"[^>]*>({.+?})</script>',
-            webpage, 'bootstrap json'), video_id)['props']['initialState']
+        data = self._search_nextjs_data(webpage, video_id)['props']['initialState']
         video_data = try_get(data, lambda x: x['video']['current'], dict)
         if not video_data:
             video_data = data['article']['content'][0]['primaryMedia']['video']

yt_dlp/extractor/novaplay.py

@@ -41,9 +41,7 @@ class NovaPlayIE(InfoExtractor):
     def _real_extract(self, url):
         video_id = self._match_id(url)
         webpage = self._download_webpage(url, video_id)
-        video_props = self._parse_json(self._search_regex(
-            r'<script\s?id=\"__NEXT_DATA__\"\s?type=\"application/json\">({.+})</script>',
-            webpage, 'video_props'), video_id)['props']['pageProps']['video']
+        video_props = self._search_nextjs_data(webpage, video_id)['props']['pageProps']['video']
         m3u8_url = self._download_json(
             f'https://nbg-api.fite.tv/api/v2/videos/{video_id}/streams',
             video_id, headers={'x-flipps-user-agent': 'Flipps/75/9.7'})[0]['url']

yt_dlp/extractor/skyit.py

@@ -3,7 +3,6 @@ from __future__ import unicode_literals
 
 from .common import InfoExtractor
 from ..compat import (
-    compat_str,
     compat_parse_qs,
     compat_urllib_parse_urlparse,
 )
@@ -125,9 +124,7 @@ class SkyItVideoLiveIE(SkyItPlayerIE):
     def _real_extract(self, url):
         display_id = self._match_id(url)
         webpage = self._download_webpage(url, display_id)
-        asset_id = compat_str(self._parse_json(self._search_regex(
-            r'<script[^>]+id="__NEXT_DATA__"[^>]*>({.+?})</script>',
-            webpage, 'next data'), display_id)['props']['initialState']['livePage']['content']['asset_id'])
+        asset_id = str(self._search_nextjs_data(webpage, display_id)['props']['initialState']['livePage']['content']['asset_id'])
         livestream = self._download_json(
             'https://apid.sky.it/vdp/v1/getLivestream',
             asset_id, query={'id': asset_id})

yt_dlp/extractor/stv.py

@@ -45,10 +45,7 @@ class STVPlayerIE(InfoExtractor):
         ptype, video_id = self._match_valid_url(url).groups()
 
         webpage = self._download_webpage(url, video_id, fatal=False) or ''
-        props = (self._parse_json(self._search_regex(
-            r'<script[^>]+id="__NEXT_DATA__"[^>]*>({.+?})</script>',
-            webpage, 'next data', default='{}'), video_id,
-            fatal=False) or {}).get('props') or {}
+        props = self._search_nextjs_data(webpage, video_id, default='{}').get('props') or {}
         player_api_cache = try_get(
             props, lambda x: x['initialReduxState']['playerApiCache']) or {}
 

yt_dlp/extractor/telemundo.py

@@ -34,8 +34,7 @@ class TelemundoIE(InfoExtractor):
     def _real_extract(self, url):
         video_id = self._match_id(url)
         webpage = self._download_webpage(url, video_id)
-        metadata = self._parse_json(
-            self._search_regex(r'<[^>]+id="__NEXT_DATA__"[^>]+>([^<]+)', webpage, 'JSON metadata'), video_id)
+        metadata = self._search_nextjs_data(webpage, video_id)
         redirect_url = try_get(
             metadata,
             lambda x: x['props']['initialState']['video']['associatedPlaylists'][0]['videos'][0]['videoAssets'][0]['publicUrl'])

yt_dlp/extractor/tiktok.py

@@ -451,12 +451,9 @@ class TikTokIE(TikTokBaseIE):
         # If we only call once, we get a 403 when downlaoding the video.
         self._download_webpage(url, video_id)
         webpage = self._download_webpage(url, video_id, note='Downloading video webpage')
-        next_json = self._search_regex(
-            r'id=\"__NEXT_DATA__\"\s+type=\"application\/json\"\s*[^>]+>\s*(?P<next_data>[^<]+)',
-            webpage, 'next data', group='next_data', default=None)
+        next_data = self._search_nextjs_data(webpage, video_id, default='{}')
 
-        if next_json:
-            next_data = self._parse_json(next_json, video_id)
+        if next_data:
             status = traverse_obj(next_data, ('props', 'pageProps', 'statusCode'), expected_type=int) or 0
             video_data = traverse_obj(next_data, ('props', 'pageProps', 'itemInfo', 'itemStruct'), expected_type=dict)
         else: