NAME

Email::MIME::Modifier - Modify Email::MIME Objects Easily

SYNOPSIS

use Email::MIME::Modifier;
my $email = Email::MIME->new( join "", <> );

remove_attachments($email);

sub remove_attachments {
    my $email = shift;
    my @keep;
    foreach my $part ( $email->parts ) {
        push @keep, $part
          unless $part->header('Content-Disposition') =~ /^attachment/;
        remove_attachments($part)
          if $part->content_type =~ /^(?:multipart|message)/;
    }
    $email->parts_set( \@keep );
}

DESCRIPTION

Provides a number of useful methods for manipulating MIME messages.

These method are declared in the Email::MIME namespace, and are used with Email::MIME objects.

Methods

content_type_set

$email->content_type_set( 'text/html' );

Change the content type. All Content-Type header attributes will remain in tact.

charset_set

name_set

format_set

boundary_set

$email->charset_set( 'utf8' );
$email->name_set( 'some_filename.txt' );
$email->format_set( 'flowed' );
$email->boundary_set( undef ); # remove the boundary

These four methods modify common Content-Type attributes. If set to undef, the attribute is removed. All other Content-Type header information is preserved when modifying an attribute.

encoding_set

$email->encoding_set( 'base64' );
$email->encoding_set( 'quoted-printable' );
$email->encoding_set( '8bit' );

Convert the message body and alter the Content-Transfer-Encoding header using this method. Your message body, the output of the body() method, will remain the same. The raw body, output with the body_raw() method, will be changed to reflect the new encoding.

body_set

$email->body_set( $unencoded_body_string );

This method will encode the new body you send using the encoding specified in the Content-Transfer-Encoding header, then set the body to the new encoded body.

This method overrides the default body_set() method.

disposition_set

$email->disposition_set( 'attachment' );

Alter the Content-Disposition of a message. All header attributes will remain in tact.

filename_set

$email->filename_set( 'boo.pdf' );

Sets the filename attribute in the Content-Disposition header. All other header information is preserved when setting this attribute.

parts_set

$email->parts_set( \@new_parts );

Replaces the parts for an object. Accepts a reference to a list of Email::MIME objects, representing the new parts. If this message was originally a single part, the Content-Type header will be changed to multipart/mixed, and given a new boundary attribute.

parts_add

$email->parts_add( \@more_parts );

Adds MIME parts onto the current MIME part. This is a simple extension of parts_set to make our lives easier. It accepts an array reference of additional parts.

walk_parts

$email->walk_parts(sub {
    my $part = @_;
    return if $part->parts > 1; # multipart
    
    if ( $part->content_type =~ m[text/html] ) {
        my $body = $part->body;
        $body =~ s/<link [^>]+>//; # simple filter example
        $part->body_set( $body );
    }
});

Walks through all the MIME parts in a message and applies a callback to each. Accepts a code reference as its only argument. The code reference will be passed a single argument, the current MIME part within the top-level MIME object. All changes will be applied in place.

SEE ALSO

Email::Simple, Email::MIME, Email::MIME::Encodings, Email::MIME::ContentType, perl.

AUTHOR

Casey West, <casey@geeknest.com>.

COPYRIGHT

Copyright (c) 2004 Casey West.  All rights reserved.
This module is free software; you can redistribute it and/or modify it
under the same terms as Perl itself.