#!/usr/local/bin/perl
##---------------------------------------------------------------------------##
##  File:
##	$Id: mha-decode,v 1.7 2003/01/04 04:44:21 ehood Exp $
##  Author:
##      Earl Hood       mhonarc@mhonarc.org
##  Description:
##      Program to decode MIME messages.
##---------------------------------------------------------------------------##
##    MHonArc -- Internet mail-to-HTML converter
##    Copyright (C) 1998	Earl Hood, mhonarc@mhonarc.org
##
##    This program is free software; you can redistribute it and/or modify
##    it under the terms of the GNU General Public License as published by
##    the Free Software Foundation; either version 2 of the License, or
##    (at your option) any later version.
##
##    This program is distributed in the hope that it will be useful,
##    but WITHOUT ANY WARRANTY; without even the implied warranty of
##    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
##    GNU General Public License for more details.
##
##    You should have received a copy of the GNU General Public License
##    along with this program; if not, write to the Free Software
##    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
##    02111-1307, USA
##---------------------------------------------------------------------------##

package mha_decode;

use Getopt::Long;

##---------------------------------------------------------------------------##
##				Main routine				     ##
##---------------------------------------------------------------------------##

MAIN: {
    unshift(@INC, 'lib');	# Should I leave this line in?

    ## Grab options from @ARGV unique to this program
    my %opts = ( );
    Getopt::Long::Configure('pass_through');
    GetOptions(\%opts,
      'dcd-digest'
    );
    my $digest_mode = $opts{'dcd-digest'} || 0;

    ## Reset pass-through of options
    Getopt::Long::Configure('no_pass_through');

    ## Initialize MHonArc
    require 'mhamain.pl' || die qq/ERROR: Unable to require "mhamain.pl"\n/;
    unshift(@ARGV, '-noarchive', '-nolock');
    mhonarc::initialize();
    mhonarc::open_archive() || exit($mhonarc::CODE);

    ## Set resources
    %readmail::MIMEFilters = (
	'application/*'	=> 'm2h_external::filter',
	'audio/*'	=> 'm2h_external::filter',
	'chemical/*'	=> 'm2h_external::filter',
	'image/*'	=> 'm2h_external::filter',
	'model/*'	=> 'm2h_external::filter',
	'text/*'	=> 'm2h_external::filter',
	'video/*'	=> 'm2h_external::filter',
    );
    %readmail::MIMEFiltersSrc = (
	'application/*'	=> 'mhexternal.pl',
	'audio/*'	=> 'mhexternal.pl',
	'chemical/*'	=> 'mhexternal.pl',
	'image/*'	=> 'mhexternal.pl',
	'model/*'	=> 'mhexternal.pl',
	'text/*'	=> 'mhexternal.pl',
	'video/*'	=> 'mhexternal.pl',
    );
    %readmail::MIMEFiltersArgs = (
	'm2h_external::filter'	=> 'usename',
    );

    if ($digest_mode) {
      $readmail::MIMEFilters{'message/*'}    = 'm2h_external::filter';
      $readmail::MIMEFiltersSrc{'message/*'} = 'mhexternal.pl';
    }

    mhonarc::process_input() || exit($mhonarc::CODE);
    mhonarc::close_archive() || exit($mhonarc::CODE);
    exit(0);
}

##---------------------------------------------------------------------------##
1;

__END__

=head1 NAME

mha-decode - Decode MIME messages

=head1 SYNOPSIS

S<B<mha-decode> [I<options>] I<mailfolder> ...>

S<B<mha-decode> [I<options>] -single I<msg.822>>

=head1 DESCRIPTION

B<mha-decode> is a utility program that is part of the B<MHonArc>
software package.  B<mha-decode> provides basic MIME decoding for
mail messages.

If given mail folders as input, all messages within in the mail
folders will be decoded.  All message parts are written to files.  If a
filename is specified for a message part, that filename will be used
when writing the part to a file.  If no filename is specified in the
message, a unique name will be used based upon the content-type of
the message part.

A single message can be decoded by using the C<-single> option.

=head1 OPTIONS

B<mha-decode> takes options available to B<mhonarc>, but only those
options affect parsing of mail folders are applicable:
C<-conlen>,
C<-mhpattern>,
C<-msgsep>,
C<-noconlen>,
C<-outdir>,
C<-perlinc>,
C<-rcfile>,
C<-single>,
C<-umask>.

Also, B<mha-decode> supports the following additional options:

=over

=item C<-dcd-digest>

Run in message digest mode.  When this option is specified, any
embedded C<message/rfc822> and C<message/news> parts will be saved
instead of recursively decoding any parts contained within.

=back

=head1 NOTES

The documentation for B<MHonArc> is distributed in HTML format.
Due to its size and organization, it is not suited for manpage
format.  Consult your system administrator for where the documentation
has been installed, or see L<"AVAILABILITY"> on where you can
access the documentation on the web.

=head1 AVAILABILITY

E<lt>I<http://www.mhonarc.org/>E<gt>

=head1 AUTHOR

Earl Hood, mhonarc@mhonarc.org

MHonArc comes with ABSOLUTELY NO WARRANTY and MHonArc may be copied only
under the terms of the GNU General Public License, which may be found in
the MHonArc distribution.

=cut

