Net::IMAP::Client::MsgSummary(3) parse message (+ subparts) summary info

SYNOPSIS

This object is created internally in Net::IMAP::Client->get_summaries. You shouldn't need to instantiate it directly. You can skip the SYNOPSIS, these notes are intended for developers.


my $imap = Net::IMAP::Client->new( ... )
$imap->select('INBOX');
# retrieve FETCH lines
my ($ok, $lines) = $imap->_tell_imap(FETCH => "$msg_id FULL");
die 'FETCH failed: ' . $imap->last_error
unless $ok;
# build parsed tokens
my @tokens = map { Net::IMAP::Client::_parse_tokens($_) } @$lines;
# they look like this:
[ '*', 'MSGID', 'FETCH',
[ 'FLAGS', [ '\\Seen', '\\Answered' ],
'INTERNALDATE', '13-Aug-2008 14:43:50 +0300',
'RFC822.SIZE', '867',
'ENVELOPE', [
...
]
...
]

Basically it's the IMAP response parsed into a Perl structure (array of tokens). FIXME: this stuff should be documented in Net::IMAP::Client. 

    # make summaries
    my @summaries = map {
        my $tokens = $_->[3];
        my %hash = @$tokens;
        Net::IMAP::Client::MsgSummary->new(\%hash);
    } @tokens;
    my $summary = shift @summaries;
    print $summary->subject;
    print $summary->from->[0];

DESCRIPTION

This object can represent a message or a message part. For example, for a message containing attachments you will be able to call parts() in order to fetch parsed Net::IMAP::Client::MsgSummary objects for each part. Each part in turn may contain other subparts! For example, if a part is of type "message/rfc822" then its "parts" method will return it's subparts, if any.

There's a distinction between a message and a message part, although we use the same object to represent both. A message will have additional information, fetched from its ENVELOPE (i.e. "subject", "from", "to", "date", etc.). For a part only, this information will be missing.

If all this sounds confusing, you might want to use Data::Dumper to inspect the structure of a complex message. See also the documentation of Net::IMAP::Client's get_summaries method for an example.

API REFERENCE

It contains only accessors that return data as retrieved by the FETCH command. Parts that may be MIME-word encoded are automatically undecoded.

new # constructor

Parses/creates a new object from the given FETCH data.
"type"
Returns the base MIME type (i.e. 'text')
"subtype"
Returns the subtype (i.e. 'plain')
"parameters"
Returns any parameters passed in BODY(STRUCTURE). You shouldn't need this.
"cid"
Returns the part's unique identifier (CID).
"description"
Returns the part's description (usually undef).
"transfer_encoding"
Returns the part's content transfer encoding. You'll need this in order to decode binary parts.
"encoded_size"
Returns the size of the encoded part. This is actually the size in octets that will be downloaded from the IMAP server if you fetch this part only.
"content_type"
Shortcut for "$self-"type . '/' .$self->subtype>.
"charset"
Returns the charset declaration for this part.
"name"
Returns the name of this part, if found in FETCH response.
"filename"
Returns the file name of this part, if found in FETCH response. If there's no filename it will try "name".
"multipart"
Returns the multipart type (i.e. 'mixed', 'alternative')
"parts"
Returns the subparts of this part.
"part_id"
Returns the ``id'' (path) of this part starting from the toplevel message, i.e. ``2.1'' (meaning that this is the first subpart of the second subpart of the toplevel message).
"md5"
Returns a MD5 of this part or undef if not present.
"disposition"
Returns the disposition of this part (undef if not present). It's a hash actually that looks like this: 

  { inline => { filename => 'foobar.png' } }
"language"
Returns the language of this part or undef if not present.
"rfc822_size"
Returns the size of the full message body.
"internaldate"
Returns the INTERNALDATE of this message.
"flags"
Returns the flags of this message.
"uid"
Returns the UID of this message.
"seq_id"
Returns the sequence number of this message, if it has been retrieved!
"date"
Returns the date of this message (from the Date header).
"subject"
Returns the subject of this message.
"from", "sender", "reply_to", "to", "cc", "bcc"
Returns an array of Net::IMAP::Client::MsgAddress objects containing the respective addresses. Note that sometimes this array can be empty!
"in_reply_to"
Returns the ID of the ``parent'' message (to which this one has been replied). This is NOT the ``UID'' of the message!
"message_id"
Returns the ID of this message (from the Message-ID header).
"get_subpart" ($path)
Returns the subpart of this message identified by $path, which is in form '1.2' etc. Returns undef if no such path was found.

Here's a possible message structure: 

 - Container (multipart/mixed) has no path ID; it's the toplevel
   message.  It contains the following subparts:
   1 multipart/related
     1.1 text/html
     1.2 image/png (embedded in HTML)
   2 message/rfc822 (decoded type is actually multipart/related)
     2.1 text/html
     2.2 image/png (also embedded)

"get_subpart" called on the container will return the respective Net::IMAP::Client::MsgSummary part, i.e. get_subpart('2.1') will return the text/html part of the attached message.

"has_attachments"
Tries to determine if this message has attachments. For now this checks if the multipart type is 'mixed', which isn't really accurate.
"is_message"
Returns true if this object represents a message (i.e. has content_type eq 'message/rfc822'). Note that it won't return true for the toplevel part, but you know that that part represents a message. ;-)
"message"
Returns the attached rfc822 message
"headers"
Returns (unparsed, as plain text) additional message headers if they were fetched by get_summaries. You can use MIME::Head to parse them.

TODO

Fix "has_attachments"

AUTHOR

Mihai Bazon, <[email protected]>
    http://www.dynarchlib.com/
    http://www.bazon.net/mishoo/

COPYRIGHT

Copyright (c) Mihai Bazon 2008. All rights reserved.

This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

DISCLAIMER OF WARRANTY

BECAUSE THIS SOFTWARE IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY FOR THE SOFTWARE, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE SOFTWARE ``AS IS'' WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE SOFTWARE IS WITH YOU. SHOULD THE SOFTWARE PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR, OR CORRECTION.

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