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Edit File: Cap.pod

=encoding utf8

=head1 NAME

Mail::Cap - understand mailcap files

=head1 SYNOPSIS

my $mc   = Mail::Cap->new;

my $desc = $mc->description('image/gif');
 print "GIF desc: $desc\n";

my $cmd  = $mc->viewCmd('text/plain; charset=iso-8859-1', 'file.txt');

=head1 DESCRIPTION

Parse mailcap files as specified in "RFC 1524 --A User Agent
Configuration Mechanism For Multimedia Mail Format Information>.  In
the description below C<$type> refers to the MIME type as specified in
the C<Content-Type> header of mail or HTTP messages.  Examples of
types are:

image/gif
  text/html
  text/plain; charset=iso-8859-1

You could also take a look at the File::MimeInfo distribution, which
are accessing tables which are used by many applications on a system,
and therefore have succeeded the mail-cap specifications on modern
(UNIX) systems.

=head1 METHODS

=head2 Constructors

=over 4

=item Mail::Cap-E<gt>B<new>(%options)

Create and initialize a new Mail::Cap object.  If you give it an
argument it will try to parse the specified file.  Without any
arguments it will search for the mailcap file using the standard
mailcap path, or the MAILCAPS environment variable if it is defined.

-Option  --Default
  filename  undef
  take      'FIRST'

=over 2

=item filename => FILENAME

Add the specified file to the list to standard locations.  This file
is tried first.

=item take => 'ALL'|'FIRST'

Include all mailcap files you can find.  By default, only the first
file is parsed, however the RFC tells us to include ALL.  To maintain
backwards compatibility, the default only takes the FIRST.

=back

example:

$mcap = new Mail::Cap;
  $mcap = new Mail::Cap "/mydir/mailcap";
  $mcap = new Mail::Cap filename => "/mydir/mailcap";
  $mcap = new Mail::Cap take => 'ALL';
  $mcap = Mail::Cap->new(take => 'ALL');

=back

=head2 Run commands

These methods invoke a suitable program presenting or manipulating the
media object in the specified file.  They all return C<1> if a command
was found, and C<0> otherwise.  You might test C<$?> for the outcome
of the command.

=over 4

=item $obj-E<gt>B<compose>($type, $file)

=item $obj-E<gt>B<edit>($type, $file)

=item $obj-E<gt>B<print>($type, $file)

=item $obj-E<gt>B<view>($type, $file)

=back

=head2 Command creator

These methods return a string that is suitable for feeding to system()
in order to invoke a suitable program presenting or manipulating the
media object in the specified file.  It will return C<undef> if no
suitable specification exists.

=over 4

=item $obj-E<gt>B<composeCmd>($type, $file)

=item $obj-E<gt>B<editCmd>($type, $file)

=item $obj-E<gt>B<printCmd>($type, $file)

=item $obj-E<gt>B<viewCmd>($type, $file)

=back

=head2 Look-up definitions

Methods return the corresponding mailcap field for the type.

=over 4

=item $obj-E<gt>B<description>($type)

=item $obj-E<gt>B<field>($type, $field)

Returns the specified field for the type.  Returns undef if no
specification exists.

=item $obj-E<gt>B<nametemplate>($type)

=item $obj-E<gt>B<textualnewlines>($type)

=item $obj-E<gt>B<x11_bitmap>($type)

=back

=head1 SEE ALSO

This module is part of the MailTools distribution,
F<http://perl.overmeer.net/mailtools/>.

=head1 AUTHORS

The MailTools bundle was developed by Graham Barr.  Later, Mark
Overmeer took over maintenance without commitment to further development.

Mail::Cap by Gisle Aas E<lt>aas@oslonett.noE<gt>.
Mail::Field::AddrList by Peter Orbaek E<lt>poe@cit.dkE<gt>.
Mail::Mailer and Mail::Send by Tim Bunce E<lt>Tim.Bunce@ig.co.ukE<gt>.
For other contributors see ChangeLog.

=head1 LICENSE

Copyrights 1995-2000 Graham Barr E<lt>gbarr@pobox.comE<gt> and
2001-2017 Mark Overmeer E<lt>perl@overmeer.netE<gt>.

This program is free software; you can redistribute it and/or modify it
under the same terms as Perl itself.
See F<http://www.perl.com/perl/misc/Artistic.html>