Email::Mime Confusion

sodbrenner has asked for the wisdom of the Perl Monks concerning the following question:

So, what I need to do is process mail in mbox format:

1) Get a message
2) Do stuff to the body
3) Print the mail back, preserving attachments

I've tried this:

#!/usr/bin/perl
use Mail::Mbox::MessageParser;
use Email::MIME;
use Encode;

my $infile = shift @ARGV;

Mail::Mbox::MessageParser::SETUP_CACHE(
    {
'file_name' => 'mbox.cache'
});

my $folder_reader = new Mail::Mbox::MessageParser({
'file_name' => $infile,
'enable_grep' => 1,
 });
 die $folder_reader unless ref $folder_reader;

 # This is the main loop. It's executed once for each email
 while(!$folder_reader->end_of_file()){
 my $rawemail = $folder_reader->read_next_email();
 my $email = Email::MIME->new($rawemail);

    $email->body_set("New Body Text");

      print $email->as_string
[download]

but it seems to ignore the new body..

If I include EMail::MIME:Modifier, the text "New Body Text" is printed, but no attachments....

How do I do this?

Thanks!

Comment on Email::Mime Confusion Download Code

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Re: Email::Mime Confusion by saberworks (Curate) on Oct 06, 2009 at 15:40 UTC
I dug around in the source of Email::MIME and Email::Simple a bit. Email::MIME inherits from Email::Simple. Email::Simple has a body_set function that sets an object var, "body" (key in blessed hash ref). The "as_string" method in Email::MIME overrides the one in Email::Simple. The one in Email::MIME looks at the "body_raw" object var (key in blessed hash ref). So when you call body_set(), it sets "body" but when you call as_string, it doesn't look for "body" it looks for "body_raw" instead. There are a number of things you can do. You can subclass Email::MIME and create a sub, body_set, that sets "body_raw" AND "body" so you're compatible with both. Or you can override as_string to print the one from body_raw instead. Instead of using "as_string" you can just print the headers then body yourself, using the headers and "body" joined by a newline. From Email::MIME: `sub as_string { my $self = shift; return $self->__head->as_string . ($self->{mycrlf} \|\| "\n") # XXX: replace with ->crlf . $self->body_raw; }` [download] From Email::Simple: `sub as_string { my $self = shift; return $self->header_obj->as_string . $self->crlf . $self->body; }` [download]	[reply] [d/l] [select]

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Re: Email::Mime Confusion
by saberworks (Curate) on Oct 06, 2009 at 15:40 UTC

sub as_string {
  my $self = shift;
  return $self->__head->as_string
    . ($self->{mycrlf} || "\n")  # XXX: replace with ->crlf
    . $self->body_raw;
}
[download]

sub as_string {
  my $self = shift;
  return $self->header_obj->as_string . $self->crlf . $self->body;
}
[download]

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