Guess filename extension

gistfile1.py

"""
Open files without extenions and guess mimetype through python-magic.
"""

# Fix extensions
(root, ext) = path.splitext(full_path)
if ext == '':
    import magic, mimetype

    mime_guesser = magic.Magic(mime=True)
    mimetype = mime_guesser.from_file(full_path)
    
    ext = mimetypes.guess_extension(mimetype)
    
    if not ext:
        logger.warning("No filetype could be determined for '%s', skipping.",
            old_value
        )
        
        return None
        
    logger.warning("No extension for '%s', guessed '%s'.",
        old_value, ext
    )

    full_path = root + ext