Allow adding attachment from memory

[cool-RR]

Sometimes I have a file in-memory, not saved to disk, and I'd like to add it as an attachment.

Currently add_attachment only works on files that are saved to the filesystem.

Please allow attaching files that are in-memory.

[tomekwojcik]

Hello, this is a nice idea. Tell me, by "in-memory files" do you mean StringIO objects or just plain strings?

I'll be working on the feature in the following days.

Thanks for your input.

[cool-RR]

I meant plain strings, but I think it's trivial to have a function that looks at the argument and checks whether it's a string or a StringIO and does the right thing.

On Tue, Aug 20, 2013 at 10:34 AM, Tomek Wójcik [email protected]:

Hello, this is a nice idea. Tell me, by "in-memory files" do you mean StringIOobjects or just plain strings?

I'll be working on the feature in the following days.

Thanks for your input.

— Reply to this email directly or view it on GitHubhttps://github.com/tomekwojcik/envelopes/issues/7#issuecomment-22927373 .

[timtadh]

I think this enhancement is pretty important. So :+1: for it. Below is how I think it should work. I considered having it use a file like object but there is no advantage as set_payload uses a string. Instead a convience method add_file can be used which has the old api.

def add_attachment(self, data, name, mimetype=None):
    """Attaches a file from a string, *data*, and gives it the name
    specified in name. If *mimetype* is not specified an attempt to guess it is
    made. If nothing is guessed then `application/octet-stream` is used."""

    if mimetype is None:
        mimetype, _ = mimetypes.guess_type(name)

    if mimetype is None:
        mimetype = 'application/octet-stream'

    type_maj, type_min = mimetype.split('/')
    part = MIMEBase(type_maj, type_min)
    part.set_payload(data)
    email_encoders.encode_base64(part)

    encoded_name = self._encoded(name)
    part.add_header(
        'Content-Disposition', 'attachment; filename="%s"' % encoded_name)

    self._parts.append((mimetype, part))

def add_file(self, file_path, mimetype=None):
    """Attaches a file located at *file_path* to the envelope. If *mimetype* is
    not specified an attempt to guess it is made. If nothing is guessed then
    `application/octet-stream` is used."""

    with open(file_path, 'rb') as f:
        data = f.read()
    filename = os.path.basename(file_path)
    self.add_attachment(data, filename, mimetype=mimetype)

[tomekwojcik]

@timtadh I have pretty much the same solution in the pipeline. I've been caught between other things lately so I haven't had a chance finish it and merge into master yet. I should be able to do so over the following days.

Thanks for your response :).

[cool-RR]

Has this been implemented yet?