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Mail::SpamAssassin::Message::NoUser)Contributed Perl DocumentMail::SpamAssassin::Message::Node(3)

NAME
       Mail::SpamAssassin::Message::Node - decode, render, and make available MIME message parts

SYNOPSIS
DESCRIPTION
       This module will encapsulate an email message and allow access to the various MIME message
       parts.

PUBLIC METHODS
       new()
	   Generates an empty Node object and returns it.  Typically only called by functions in
	   Message.

       find_parts()
	   Used to search the tree for specific MIME parts.  An array of matching Node objects
	   (pointers into the tree) is returned.  The parameters that can be passed in are (in
	   order, all scalars):

	   Regexp - Used to match against each part's Content-Type header, specifically the type
	   and not the rest of the header.  ie: "Content-type: text/html;
	   encoding=quoted-printable" has a type of "text/html".  If no regexp is specified,
	   find_parts() will return an empty array.

	   Only_leaves - By default, find_parts() will return any part that matches the regexp,
	   including multipart.  If you only want to see leaves of the tree (ie: parts that
	   aren't multipart), set this to true (1).

	   Recursive - By default, when find_parts() finds a multipart which has parts underneath
	   it, it will recurse through all sub-children.  If set to 0, only look at the part and
	   any direct children of the part.

       header()
	   Stores and retrieves headers from a specific MIME part.  The first parameter is the
	   header name.  If there is no other parameter, the header is retrieved.  If there is a
	   second parameter, the header is stored.

	   Header names are case-insensitive and are stored in both raw and decoded form.  Using
	   header(), only the decoded form is retrievable.

	   For retrieval, if header() is called in an array context, an array will be returned
	   with each header entry in a different element.  In a scalar context, the last specific
	   header is returned.

	   ie: If 'Subject' is specified as the header, and there are 2 Subject headers in a
	   message, the last/bottom one in the message is returned in scalar context or both are
	   returned in array context.

       raw_header()
	   Retrieves the raw version of headers from a specific MIME part.  The only parameter is
	   the header name.  Header names are case-insensitive.

	   For retrieval, if raw_header() is called in an array context, an array will be
	   returned with each header entry in a different element.  In a scalar context, the last
	   specific header is returned.

	   ie: If 'Subject' is specified as the header, and there are 2 Subject headers in a
	   message, the last/bottom one in the message is returned in scalar context or both are
	   returned in array context.

       add_body_part()
	   Adds a Node child object to the current node object.

       is_leaf()
	   Returns true if the tree node in question is a leaf of the tree (ie: has no children
	   of its own).  Note: This function may return odd results unless the message has been
	   mime parsed via _do_parse()!

       raw()
	   Return a reference to the the raw array.  Treat this as READ ONLY.

       decode()
	   If necessary, decode the part text as base64 or quoted-printable.  The decoded text
	   will be returned as a scalar string.  An optional length parameter can be passed in
	   which limits how much decoded data is returned.  If the scalar isn't needed, call with
	   "0" as a parameter.

       rendered()
	   render_text() takes the given text/* type MIME part, and attempts to render it into a
	   text scalar.  It will always render text/html, and will use a heuristic to determine
	   if other text/* parts should be considered text/html.  Two scalars are returned: the
	   rendered type (either text/html or whatever the original type was), and the rendered
	   text.

       set_rendered($text, $type)
	   Set the rendered text and type for the given part.  If type is not specified, and text
	   is a defined value, a default of 'text/plain' is used.  This can be used, for
	   instance, to render non-text parts using plugins.

       visible_rendered()
	   Render and return the visible text in this part.

       invisible_rendered()
	   Render and return the invisible text in this part.

       content_summary()
	   Returns an array of scalars describing the mime parts of the message.  Note: This
	   function requires that the message be parsed first!

       delete_header()
	   Delete the specified header (decoded and raw) from the Node information.

       get_header()
	   Retrieve a specific header.	Will have a newline at the end and will be unfolded.  The
	   first parameter is the header name (case-insensitive), and the second parameter
	   (optional) is whether or not to return the raw header.

	   If get_header() is called in an array context, an array will be returned with each
	   header entry in a different element.  In a scalar context, the last specific header is
	   returned.

	   ie: If 'Subject' is specified as the header, and there are 2 Subject headers in a
	   message, the last/bottom one in the message is returned in scalar context or both are
	   returned in array context.

	   Btw, returning the last header field (not the first) happens to be consistent with
	   DKIM signatures, which search for and cover multiple header fields bottom-up according
	   to the 'h' tag. Let's keep it this way.

       get_all_headers()
	   Retrieve all headers.  Each header will have a newline at the end and will be
	   unfolded.  The first parameter (optional) is whether or not to return the raw headers,
	   and the second parameter (optional) is whether or not to include the mbox separator.

	   If get_all_header() is called in an array context, an array will be returned with each
	   header entry in a different element.  In a scalar context, the headers are returned in
	   a single scalar.

perl v5.12.1				    2010-03-16	     Mail::SpamAssassin::Message::Node(3)
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