#!/usr/bin/perl

# $Id: utf7_to_utf7imap,v 1.1 2016/08/08 22:57:44 gilles Exp gilles $

use strict ;
use warnings ;

foreach my $str_utf7 ( @ARGV ) {
	my $str_utf7imap = utf7_to_utf7imap( $str_utf7 ) ;
	print qq{mv '$str_utf7' '$str_utf7imap'\n} ;
}

# http://cpansearch.perl.org/src/FABPOT/Unicode-IMAPUtf7-2.01/lib/Unicode/IMAPUtf7.pm
sub utf7_to_utf7imap {
        my ( $s ) = @_ ;
	
	$s =~ s/\+([^\/&\-]*)\/([^\/\-&]*)\-/\+$1,$2\-/g ;
	$s =~ s/&/&\-/g ;
	$s =~ s/\+([^+\-]+)?\-/&$1\-/g ;
        return( $s ) ;
}