CSD parser decorator

parse_csd.py

"""
Simplified decorator which is used to convert raw POST data in CSD (comma-separated dict) format to the list of dicts and then store this list as `request.csd` variable

For example, data like:

user=netangels,site=netangels.ru,hits=1234
user=example,site=example.com,hits=4567

stored in the file data.csd and sent by curl with a command like this:

curl --data-binary @data.csd  http://...

will be converted by the decorator to the structure as follows

[{'hits': '1234', 'site': 'netangels.ru', 'user': 'netangels'},
 {'hits': '4567', 'site': 'example.com', 'user': 'example'}]

"""

def parse_csd(view):
    def decorator(request, *args, **kwargs):
        data = request.raw_post_data or ''
        lines = data.splitlines()
        csd = []
        for line in lines:
            chunks = line.split(',')
            element = dict(map(lambda chunk: chunk.split('=', 1), chunks))
            csd.append(element)
        request.csd = csd
        return view(request, *args, **kwargs)
    return decorator