From c8498368549048a578d5f30773aaa9760454983c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Sergey=20M=E2=80=A4?= <dstftw@gmail.com>
Date: Thu, 15 Sep 2016 21:54:48 +0700
Subject: [PATCH] [utils] Improve _hidden_inputs

---
 youtube_dl/extractor/common.py | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/youtube_dl/extractor/common.py b/youtube_dl/extractor/common.py
index ff19270aee..e413799f9a 100644
--- a/youtube_dl/extractor/common.py
+++ b/youtube_dl/extractor/common.py
@@ -888,16 +888,16 @@ class InfoExtractor(object):
     def _hidden_inputs(html):
         html = re.sub(r'<!--(?:(?!<!--).)*-->', '', html)
         hidden_inputs = {}
-        for input in re.findall(r'(?i)<input([^>]+)>', html):
-            if not re.search(r'type=(["\'])(?:hidden|submit)\1', input):
+        for input in re.findall(r'(?i)(<input[^>]+>)', html):
+            attrs = extract_attributes(input)
+            if not input:
                 continue
-            name = re.search(r'(?:name|id)=(["\'])(?P<value>.+?)\1', input)
-            if not name:
+            if attrs.get('type') not in ('hidden', 'submit'):
                 continue
-            value = re.search(r'value=(["\'])(?P<value>.*?)\1', input)
-            if not value:
-                continue
-            hidden_inputs[name.group('value')] = value.group('value')
+            name = attrs.get('name') or attrs.get('id')
+            value = attrs.get('value')
+            if name and value is not None:
+                hidden_inputs[name] = value
         return hidden_inputs
 
     def _form_hidden_inputs(self, form_id, html):