httputil.py 文件源码

def parse_body_arguments(content_type, body, arguments, files, headers=None):
    """Parses a form request body.

    Supports ``application/x-www-form-urlencoded`` and
    ``multipart/form-data``.  The ``content_type`` parameter should be
    a string and ``body`` should be a byte string.  The ``arguments``
    and ``files`` parameters are dictionaries that will be updated
    with the parsed contents.
    """
    if headers and 'Content-Encoding' in headers:
        gen_log.warning("Unsupported Content-Encoding: %s",
                        headers['Content-Encoding'])
        return
    if content_type.startswith("application/x-www-form-urlencoded"):
        try:
            uri_arguments = parse_qs_bytes(native_str(body), keep_blank_values=True)
        except Exception as e:
            gen_log.warning('Invalid x-www-form-urlencoded body: %s', e)
            uri_arguments = {}
        for name, values in uri_arguments.items():
            if values:
                arguments.setdefault(name, []).extend(values)
    elif content_type.startswith("multipart/form-data"):
        try:
            fields = content_type.split(";")
            for field in fields:
                k, sep, v = field.strip().partition("=")
                if k == "boundary" and v:
                    parse_multipart_form_data(utf8(v), body, arguments, files)
                    break
            else:
                raise ValueError("multipart boundary not found")
        except Exception as e:
            gen_log.warning("Invalid multipart/form-data: %s", e)