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Add fatal=False parameter to _download_* functions.

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This allows us to simplify the calls in the youtube extractor even further.
This commit is contained in:
Philipp Hagemeister
2013-12-09 01:49:01 +01:00
parent baa7b1978b
commit 7cc3570e53
2 changed files with 57 additions and 40 deletions
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30
youtube_dl/extractor/common.py
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@@ -154,27 +154,38 @@ class InfoExtractor(object):
def IE_NAME(self):
return type(self).__name__[:-2]
def _request_webpage(self, url_or_request, video_id, note=None, errnote=None):
def _request_webpage(self, url_or_request, video_id, note=None, errnote=None, fatal=True):
""" Returns the response handle """
if note is None:
self.report_download_webpage(video_id)
elif note is not False:
self.to_screen(u'%s: %s' % (video_id, note))
if video_id is None:
self.to_screen(u'%s' % (note,))
else:
self.to_screen(u'%s: %s' % (video_id, note))
try:
return self._downloader.urlopen(url_or_request)
except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
if errnote is None:
errnote = u'Unable to download webpage'
raise ExtractorError(u'%s: %s' % (errnote, compat_str(err)), sys.exc_info()[2], cause=err)
errmsg = u'%s: %s' % (errnote, compat_str(err))
if fatal:
raise ExtractorError(errmsg, sys.exc_info()[2], cause=err)
else:
self._downloader.report_warning(errmsg)
return False
def _download_webpage_handle(self, url_or_request, video_id, note=None, errnote=None):
def _download_webpage_handle(self, url_or_request, video_id, note=None, errnote=None, fatal=True):
""" Returns a tuple (page content as string, URL handle) """
# Strip hashes from the URL (#1038)
if isinstance(url_or_request, (compat_str, str)):
url_or_request = url_or_request.partition('#')[0]
urlh = self._request_webpage(url_or_request, video_id, note, errnote)
urlh = self._request_webpage(url_or_request, video_id, note, errnote, fatal)
if urlh is False:
assert not fatal
return False
content_type = urlh.headers.get('Content-Type', '')
webpage_bytes = urlh.read()
m = re.match(r'[a-zA-Z0-9_.-]+/[a-zA-Z0-9_.-]+\s*;\s*charset=(.+)', content_type)
@@ -209,9 +220,14 @@ class InfoExtractor(object):
content = webpage_bytes.decode(encoding, 'replace')
return (content, urlh)
def _download_webpage(self, url_or_request, video_id, note=None, errnote=None):
def _download_webpage(self, url_or_request, video_id, note=None, errnote=None, fatal=True):
""" Returns the data of the page as a string """
return self._download_webpage_handle(url_or_request, video_id, note, errnote)[0]
res = self._download_webpage_handle(url_or_request, video_id, note, errnote, fatal)
if res is False:
return res
else:
content, _ = res
return content
def _download_xml(self, url_or_request, video_id,
note=u'Downloading XML', errnote=u'Unable to download XML'):