embed video backends

embed_video/base.py

@@ -0,0 +1,56 @@
+import re
+
+DETECT_YOUTUBE = re.compile(
+    '^(http(s)?://(www\.)?)?youtu(\.?)be(\.com)?.*', re.I
+)
+DETECT_VIMEO = re.compile('^(http(s)?://(www\.)?)?vimeo\.com.*', re.I)
+
+
+class UnknownBackendException(Exception):
+    pass
+
+
+def detect_backend(url):
+    if DETECT_YOUTUBE.match(url):
+        return YoutubeBackend(url)
+    elif DETECT_VIMEO.match(url):
+        return VimeoBackend(url)
+    else:
+        raise UnknownBackendException
+
+
+class VideoBackend(object):
+    def __init__(self, url):
+        self._url = url
+
+        self.code = self.get_code()
+        self.url = self.get_url()
+        self.thumbnail = self.get_thumbnail_url()
+
+    def get_code(self):
+        match = self.re_code.search(self._url)
+        if match:
+            return match.group('code')
+
+    def get_url(self):
+        return self.pattern_url % self.code
+
+    def get_thumbnail_url(self):
+        return self.pattern_thumbnail_url % self.code
+
+
+class YoutubeBackend(VideoBackend):
+    re_code = re.compile(
+        'youtu(?:be\.com/watch\?v=|\.be/)(?P<code>[\w-]*)(&(amp;)?[\w\?=]*)?',
+        re.I
+    )
+    pattern_url = 'http://www.youtube.com/embed/%s?wmode=opaque'
+    pattern_thumbnail_url = 'http://img.youtube.com/vi/%s/hqdefault.jpg'
+
+
+class VimeoBackend(VideoBackend):
+    re_code = re.compile('vimeo\.com/(?P<code>[0-9]+)', re.I)
+    pattern_url = 'http://player.vimeo.com/video/%s'
+
+    def get_thumbnail_url(self):
+        pass  # not implemented