implemented Coub breaking change detection. fixes #8

coub-dl.py

@@ -49,6 +49,8 @@ class coub_dl:
         self.download_audio_stream()
         self.download_video_stream()
         self.read_extensions()
+        try: self.check_downloads()
+        except RuntimeError: exit('Failed to download streams! This usually happens when Coub changes something.')
         self.fix_video_stream()
 
         # get stream lengths via ffprobe
@@ -103,6 +105,12 @@ class coub_dl:
                     self._files_dict[filename] = fullname
 
 
+    def check_downloads(self):
+        check = {Stream.VIDEO, Stream.AUDIO}
+        if not all({exists(self._files_dict[item]) for item in check}):
+            raise RuntimeError('Download failed!')
+
+
     def fix_video_stream(self):
         """ magic fix for videos served by coub. see https://github.com/rg3/youtube-dl/issues/13754 """
         with open(self._files_dict[Stream.VIDEO], 'r+b') as f: