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:mod:`MimeWriter` --- Generic MIME file writer
==============================================
.. module:: MimeWriter
:synopsis: Write MIME format files.
:deprecated:
.. sectionauthor:: Christopher G. Petrilli <petrilli@amber.org>
.. deprecated:: 2.3
The :mod:`email` package should be used in preference to the :mod:`MimeWriter`
module. This module is present only to maintain backward compatibility.
This module defines the class :class:`MimeWriter`. The :class:`MimeWriter`
class implements a basic formatter for creating MIME multi-part files. It
doesn't seek around the output file nor does it use large amounts of buffer
space. You must write the parts out in the order that they should occur in the
final file. :class:`MimeWriter` does buffer the headers you add, allowing you
to rearrange their order.
.. class:: MimeWriter(fp)
Return a new instance of the :class:`MimeWriter` class. The only argument
passed, *fp*, is a file object to be used for writing. Note that a
:class:`StringIO` object could also be used.
.. _mimewriter-objects:
MimeWriter Objects
------------------
:class:`MimeWriter` instances have the following methods:
.. method:: MimeWriter.addheader(key, value[, prefix])
Add a header line to the MIME message. The *key* is the name of the header,
where the *value* obviously provides the value of the header. The optional
argument *prefix* determines where the header is inserted; ``0`` means append
at the end, ``1`` is insert at the start. The default is to append.
.. method:: MimeWriter.flushheaders()
Causes all headers accumulated so far to be written out (and forgotten). This is
useful if you don't need a body part at all, e.g. for a subpart of type
:mimetype:`message/rfc822` that's (mis)used to store some header-like
information.
.. method:: MimeWriter.startbody(ctype[, plist[, prefix]])
Returns a file-like object which can be used to write to the body of the
message. The content-type is set to the provided *ctype*, and the optional
parameter *plist* provides additional parameters for the content-type
declaration. *prefix* functions as in :meth:`addheader` except that the default
is to insert at the start.
.. method:: MimeWriter.startmultipartbody(subtype[, boundary[, plist[, prefix]]])
Returns a file-like object which can be used to write to the body of the
message. Additionally, this method initializes the multi-part code, where
*subtype* provides the multipart subtype, *boundary* may provide a user-defined
boundary specification, and *plist* provides optional parameters for the
subtype. *prefix* functions as in :meth:`startbody`. Subparts should be created
using :meth:`nextpart`.
.. method:: MimeWriter.nextpart()
Returns a new instance of :class:`MimeWriter` which represents an individual
part in a multipart message. This may be used to write the part as well as
used for creating recursively complex multipart messages. The message must first
be initialized with :meth:`startmultipartbody` before using :meth:`nextpart`.
.. method:: MimeWriter.lastpart()
This is used to designate the last part of a multipart message, and should
*always* be used when writing multipart messages.
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