Add Patreon extractor

diff --git a/youtube_dl/extractor/patreon.py b/youtube_dl/extractor/patreon.py
new file mode 100644 (file)
index 0000000..da1ad06
--- /dev/null
+++ b/youtube_dl/extractor/patreon.py
@@ -0,0 +1,127 @@
+# encoding: utf-8
+from __future__ import unicode_literals
+
+import re
+
+from .common import InfoExtractor
+from ..utils import (
+    ExtractorError,
+    compat_html_parser,
+    #compat_urllib_request,
+    #compat_urllib_parse,
+)
+
+
+class PatreonHTMLParser(compat_html_parser.HTMLParser):
+    _PREFIX = 'http://www.patreon.com'
+    _ATTACH_TAGS = 5 * ['div']
+    _ATTACH_CLASSES = [
+        'fancyboxhidden', 'box photo double', 'boxwrapper double',
+        'hiddendisplay shareinfo', 'attach'
+    ]
+    _INFO_TAGS = 4 * ['div']
+    _INFO_CLASSES = [
+        'fancyboxhidden', 'box photo double', 'boxwrapper double',
+        'hiddendisplay shareinfo'
+    ]
+
+    def get_creation_info(self, html_data):
+        self.tag_stack = []
+        self.attrs_stack = []
+        self.creation_info = {}
+        self.feed(html_data)
+
+    def handle_starttag(self, tag, attrs):
+        self.tag_stack.append(tag.lower())
+        self.attrs_stack.append(dict(attrs))
+
+    def handle_endtag(self, tag):
+        self.tag_stack.pop()
+        self.attrs_stack.pop()
+
+    def handle_data(self, data):
+        # Check first if this is a creation attachment
+        if self.tag_stack[-6:-1] == self._ATTACH_TAGS:
+            attrs_classes = [
+                x.get('class', '').lower() for x in self.attrs_stack[-6:-1]
+            ]
+            if attrs_classes == self._ATTACH_CLASSES:
+                if self.tag_stack[-1] == 'a':
+                    url = self._PREFIX + self.attrs_stack[-1].get('href')
+                    self.creation_info['url'] = url
+                    if '.' in data:
+                        self.creation_info['ext'] = data.rsplit('.')[-1]
+        # Next, check if this is within the div containing the creation info
+        if self.tag_stack[-5:-1] == self._INFO_TAGS:
+            attrs_classes = [
+                x.get('class', '').lower() for x in self.attrs_stack[-5:-1]
+            ]
+            if attrs_classes == self._INFO_CLASSES:
+                if self.attrs_stack[-1].get('class') == 'utitle':
+                    self.creation_info['title'] = data.strip()
+
+
+class PatreonIE(InfoExtractor):
+    IE_NAME = 'patreon'
+    _VALID_URL = r'https?://(?:www\.)?patreon\.com/creation\?hid=(.+)'
+    _TESTS = [
+        {
+            'url': 'http://www.patreon.com/creation?hid=743933',
+            'md5': 'e25505eec1053a6e6813b8ed369875cc',
+            'name': 'Patreon',
+            'info_dict': {
+                'id': '743933',
+                'ext': 'mp3',
+                'title': 'Episode 166: David Smalley of Dogma Debate',
+                'uploader': 'Cognitive Dissonance Podcast',
+            },
+        },
+    ]
+
+    # Currently Patreon exposes download URL via hidden CSS, so login is not
+    # needed. Keeping this commented for when this inevitably changes.
+    '''
+    def _login(self):
+        (username, password) = self._get_login_info()
+        if username is None:
+            return
+
+        login_form = {
+            'redirectUrl': 'http://www.patreon.com/',
+            'email': username,
+            'password': password,
+        }
+
+        request = compat_urllib_request.Request(
+            'https://www.patreon.com/processLogin',
+            compat_urllib_parse.urlencode(login_form).encode('utf-8')
+        )
+        login_page = self._download_webpage(request, None, note='Logging in as %s' % username)
+
+        if re.search(r'onLoginFailed', login_page):
+            raise ExtractorError('Unable to login, incorrect username and/or password', expected=True)
+
+    def _real_initialize(self):
+        self._login()
+    '''
+
+    def _real_extract(self, url):
+        mobj = re.match(self._VALID_URL, url)
+        video_id = mobj.group(1)
+
+        info_page = self._download_webpage(url, video_id)
+
+        ret = {'id': video_id}
+        try:
+            ret['uploader'] = re.search(
+                r'<strong>(.+)</strong> is creating', info_page
+            ).group(1)
+        except AttributeError:
+            pass
+
+        parser = PatreonHTMLParser()
+        parser.get_creation_info(info_page)
+        if not parser.creation_info.get('url'):
+            raise ExtractionError('Unable to retrieve creation URL')
+        ret.update(parser.creation_info)
+        return ret