wiki-archive/twiki/lib/TWiki/Contrib/MailerContrib/Subscription.pm

116 lines
2.9 KiB
Perl

# Module of TWiki Enterprise Collaboration Platform, http://TWiki.org/
#
# Copyright (C) 2004 Wind River Systems Inc.
# Copyright (C) 1999-2006 TWiki Contributors.
# All Rights Reserved. TWiki Contributors
# are listed in the AUTHORS file in the root of this distribution.
# NOTE: Please extend that file, not this notice.
#
#
# As per the GPL, removal of this notice is prohibited.
use strict;
=pod
---+ package TWiki::Contrib::MailerContrib::Subscription
Object that represents a single subscription of a user to
notification on a page. A subscription is expressed as a page
spec (which may contain wildcards) and a depth of children of
matching pages that the user is subscribed to.
=cut
package TWiki::Contrib::MailerContrib::Subscription;
=pod
---++ ClassMethod new($pages, $childDepth, $news)
* =$pages= - Wildcarded expression matching subscribed pages
* =$childDepth= - Depth of children of $topic to notify changes for. Defaults to 0
* =$mode= - ! if this is a non-changes subscription and the topics should
be mailed evebn if there are no changes. ? to mail the full topic only
if there are changes. undef to mail changes only.
Create a new subscription.
=cut
sub new {
my ( $class, $topics, $depth, $mode ) = @_;
my $this = bless( {}, $class );
$this->{topics} = $topics;
$this->{depth} = $depth;
$this->{mode} = $mode;
$topics =~ s/[^\w\*]//g;
$topics =~ s/\*/\.\*\?/g;
$this->{topicsRE} = qr/^$topics$/;
return $this;
}
=pod
---++ ObjectMethod stringify() -> string
Return a string representation of this object, in Web<nop>Notify format.
=cut
sub stringify {
my $this = shift;
my $record = $this->{topics} . ($this->{mode} || '');
# convert RE back to wildcard
$record =~ s/\.\*\?/\*/;
$record .= " ($this->{depth})" if ( $this->{depth} );
return $record;
}
=pod
---++ ObjectMethod matches($topic, $db, $depth) -> boolean
* =$topic= - Topic object we are checking
* =$db= - TWiki::Contrib::MailerContrib::UpData database of parent names
* =$depth= - If non-zero, check if the parent of the given topic matches as well. undef = 0.
Check if we match this topic. Recurses up the parenthood tree seeing if
this is a child of a parent that matches within the depth range.
=cut
sub matches {
my ( $this, $topic, $db, $depth ) = @_;
return 0 unless ($topic);
return 1 if ( $topic =~ $this->{topicsRE} );
$depth = $this->{depth} unless defined( $depth );
$depth ||= 0;
if ( $depth ) {
my $parent = $db->getParent( $topic );
$parent =~ s/^.*\.//;
return $this->matches( $parent, $db, $depth - 1 ) if ( $parent );
}
return 0;
}
=pod
---++ ObjectMethod getMode() -> $mode
Return ! if this is a non-changes subscription and the topics should
be mailed even if there are no changes. ? to mail the full topic only
if there are changes. undef to mail changes only.
=cut
sub getMode {
my $this = shift;
return $this->{mode};
}
1;