Multifruits

Tasty multipart form data parser built with cython.

Install

pip install multifruits

Usage

multifruits has one Parser class and two helpers: extract_filename and parse_content_disposition.

Parser

Parser needs the Content-Type header value and a handler, which could define one or more of these methods:

on_body_begin()
on_part_begin()
on_header(name: bytes, value: bytes)
on_headers_complete()
on_data(data: bytes)
on_part_complete()
on_body_complete()

Example:

from multifruits import Parser

class MyHandler:

    def on_part_begin(self):
        self.part = MyPart()

    def on_header(self, name, value):
        self.part.headers[name] = value

    def on_data(self, data):
        self.part.write(data)

handler = MyHandler()
parser = Parser(handler, request.headers['Content-Type'])
parser.feed_data(request.body)  # You can pass chunks

Helpers

parse_content_disposition

Takes raw Content-Disposition header value and returns the disposition type (attachment, form-data, inline and so on) and the parameters parsed as a dictionary.

Example:

dtype, params = parse_content_disposition(b'inline; filename="foo.html"')
assert dtype == b'inline'
assert params == {b'filename': b'foo.html'}

extract_filename

Takes parameters from parse_content_disposition as a dict and tries to return the appropriated str filename (like filename*).

Example:

assert extract_filename({
    b'filename*': "UTF-8''foo-ä-€.html".encode()
}) == 'foo-ä-€.html'

Build from source

You need a virtualenv with cython installed, then:

git clone https://github.com/pyrates/multifruits
cd multifruits
make compile
python setup.py develop

Tests

To run tests:

make test

Acknowledgements

• https://github.com/iafonov/multipart-parser-c/
• https://github.com/francoiscolas/multipart-parser/
• https://github.com/felixge/node-formidable/