Fix URL parsing bug (#4998)

* added callbacks

* added back callback to main

* added save_dir to callback output

* merged in upstream

* removed ghost code

* fixed parsing error for google temp links

Co-authored-by: Glenn Jocher <glenn.jocher@ultralytics.com>

utils/general.py

@@ -313,7 +313,7 @@ def check_file(file, suffix=''):
         return file
     elif file.startswith(('http:/', 'https:/')):  # download
         url = str(Path(file)).replace(':/', '://')  # Pathlib turns :// -> :/
-        file = Path(urllib.parse.unquote(file)).name.split('?')[0]  # '%2F' to '/', split https://url.com/file.txt?auth
+        file = Path(urllib.parse.unquote(file).split('?')[0]).name  # '%2F' to '/', split https://url.com/file.txt?auth
         print(f'Downloading {url} to {file}...')
         torch.hub.download_url_to_file(url, file)
         assert Path(file).exists() and Path(file).stat().st_size > 0, f'File download failed: {url}'  # check