--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/symbian-qemu-0.9.1-12/python-2.6.1/Doc/library/email.generator.rst Fri Jul 31 15:01:17 2009 +0100
@@ -0,0 +1,124 @@
+:mod:`email`: Generating MIME documents
+---------------------------------------
+
+.. module:: email.generator
+ :synopsis: Generate flat text email messages from a message structure.
+
+
+One of the most common tasks is to generate the flat text of the email message
+represented by a message object structure. You will need to do this if you want
+to send your message via the :mod:`smtplib` module or the :mod:`nntplib` module,
+or print the message on the console. Taking a message object structure and
+producing a flat text document is the job of the :class:`Generator` class.
+
+Again, as with the :mod:`email.parser` module, you aren't limited to the
+functionality of the bundled generator; you could write one from scratch
+yourself. However the bundled generator knows how to generate most email in a
+standards-compliant way, should handle MIME and non-MIME email messages just
+fine, and is designed so that the transformation from flat text, to a message
+structure via the :class:`Parser` class, and back to flat text, is idempotent
+(the input is identical to the output).
+
+Here are the public methods of the :class:`Generator` class, imported from the
+:mod:`email.generator` module:
+
+
+.. class:: Generator(outfp[, mangle_from_[, maxheaderlen]])
+
+ The constructor for the :class:`Generator` class takes a file-like object called
+ *outfp* for an argument. *outfp* must support the :meth:`write` method and be
+ usable as the output file in a Python extended print statement.
+
+ Optional *mangle_from_* is a flag that, when ``True``, puts a ``>`` character in
+ front of any line in the body that starts exactly as ``From``, i.e. ``From``
+ followed by a space at the beginning of the line. This is the only guaranteed
+ portable way to avoid having such lines be mistaken for a Unix mailbox format
+ envelope header separator (see `WHY THE CONTENT-LENGTH FORMAT IS BAD
+ <http://www.jwz.org/doc/content-length.html>`_ for details). *mangle_from_*
+ defaults to ``True``, but you might want to set this to ``False`` if you are not
+ writing Unix mailbox format files.
+
+ Optional *maxheaderlen* specifies the longest length for a non-continued header.
+ When a header line is longer than *maxheaderlen* (in characters, with tabs
+ expanded to 8 spaces), the header will be split as defined in the
+ :mod:`email.header.Header` class. Set to zero to disable header wrapping. The
+ default is 78, as recommended (but not required) by :rfc:`2822`.
+
+ The other public :class:`Generator` methods are:
+
+
+ .. method:: flatten(msg[, unixfrom])
+
+ Print the textual representation of the message object structure rooted at
+ *msg* to the output file specified when the :class:`Generator` instance
+ was created. Subparts are visited depth-first and the resulting text will
+ be properly MIME encoded.
+
+ Optional *unixfrom* is a flag that forces the printing of the envelope
+ header delimiter before the first :rfc:`2822` header of the root message
+ object. If the root object has no envelope header, a standard one is
+ crafted. By default, this is set to ``False`` to inhibit the printing of
+ the envelope delimiter.
+
+ Note that for subparts, no envelope header is ever printed.
+
+ .. versionadded:: 2.2.2
+
+
+ .. method:: clone(fp)
+
+ Return an independent clone of this :class:`Generator` instance with the
+ exact same options.
+
+ .. versionadded:: 2.2.2
+
+
+ .. method:: write(s)
+
+ Write the string *s* to the underlying file object, i.e. *outfp* passed to
+ :class:`Generator`'s constructor. This provides just enough file-like API
+ for :class:`Generator` instances to be used in extended print statements.
+
+As a convenience, see the methods :meth:`Message.as_string` and
+``str(aMessage)``, a.k.a. :meth:`Message.__str__`, which simplify the generation
+of a formatted string representation of a message object. For more detail, see
+:mod:`email.message`.
+
+The :mod:`email.generator` module also provides a derived class, called
+:class:`DecodedGenerator` which is like the :class:`Generator` base class,
+except that non-\ :mimetype:`text` parts are substituted with a format string
+representing the part.
+
+
+.. class:: DecodedGenerator(outfp[, mangle_from_[, maxheaderlen[, fmt]]])
+
+ This class, derived from :class:`Generator` walks through all the subparts of a
+ message. If the subpart is of main type :mimetype:`text`, then it prints the
+ decoded payload of the subpart. Optional *_mangle_from_* and *maxheaderlen* are
+ as with the :class:`Generator` base class.
+
+ If the subpart is not of main type :mimetype:`text`, optional *fmt* is a format
+ string that is used instead of the message payload. *fmt* is expanded with the
+ following keywords, ``%(keyword)s`` format:
+
+ * ``type`` -- Full MIME type of the non-\ :mimetype:`text` part
+
+ * ``maintype`` -- Main MIME type of the non-\ :mimetype:`text` part
+
+ * ``subtype`` -- Sub-MIME type of the non-\ :mimetype:`text` part
+
+ * ``filename`` -- Filename of the non-\ :mimetype:`text` part
+
+ * ``description`` -- Description associated with the non-\ :mimetype:`text` part
+
+ * ``encoding`` -- Content transfer encoding of the non-\ :mimetype:`text` part
+
+ The default value for *fmt* is ``None``, meaning ::
+
+ [Non-text (%(type)s) part of message omitted, filename %(filename)s]
+
+ .. versionadded:: 2.2.2
+
+.. versionchanged:: 2.5
+ The previously deprecated method :meth:`__call__` was removed.
+