package VCP::Branches ; =head1 NAME VCP::Branches - A collection of VCP::Rev objects. =head1 SYNOPSIS =head1 DESCRIPTION Right now, all branches are kept in memory, but we will enable storing them to disk and recovering them at some point so that we don't gobble huge tracts of RAM. =head1 METHODS =over =cut $VERSION = 1 ; use strict ; use Carp ; use VCP::Debug ":debug" ; use VCP::Rev ; use fields ( 'BRANCHES', ## The branches, sorted or not 'SEEN', ## Oh, the branches we've seen ) ; =item new =cut sub new { my $class = CORE::shift ; $class = ref $class || $class ; my $self ; { no strict 'refs' ; $self = bless [ \%{"$class\::FIELDS"} ], $class ; } $self->{BRANCHES} = [] ; $self->{SEEN} = {} ; return $self ; } =item add $branches->add( $branch ) ; $branches->add( $branch1, $branch2, ... ) ; Adds a branch or branches to the collection, unless they are already present. =cut sub add { my VCP::Branches $self = CORE::shift ; for my $b ( @_ ) { my $key = $b->branch_id; next if $self->{SEEN}->{$key} ; debug "queuing ", $b->as_string if debugging; $self->{SEEN}->{$key} = 1 ; push @{$self->{BRANCHES}}, $b ; } } =item get @branches = $branches->get ; Gets the list of branches in alphabetical order. =cut sub get { my VCP::Branches $self = CORE::shift ; # the @b is to work around a bug that seems to happen in perl5.6.1: # sort() called in a scalar context doesn't return TRUE, not sure # why. my @b = sort { $a->branch_id cmp $b->branch_id } @{$self->{BRANCHES}} ; return @b; } =back =head1 SUBCLASSING This class uses the fields pragma, so you'll need to use base and possibly fields in any subclasses. =head1 COPYRIGHT Copyright 2000, Perforce Software, Inc. All Rights Reserved. This module and the VCP package are licensed according to the terms given in the file LICENSE accompanying this distribution, a copy of which is included in L. =head1 AUTHOR Barrie Slaymaker =cut 1