/usr/local/CPAN/SVK/SVK/Editor/MapRev.pm

• package SVK::Editor::MapRev
  • rev_at
  • AUTOLOAD
  • wrap_without_copy
• EOF

# BEGIN BPS TAGGED BLOCK {{{
# COPYRIGHT:
# 
# This software is Copyright (c) 2003-2008 Best Practical Solutions, LLC
#                                          <clkao@bestpractical.com>
# 
# (Except where explicitly superseded by other copyright notices)
# 
# 
# LICENSE:
# 
# 
# This program is free software; you can redistribute it and/or
# modify it under the terms of either:
# 
#   a) Version 2 of the GNU General Public License.  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., 51
#      Franklin Street, Fifth Floor, Boston, MA 02110-1301 or visit
#      their web page on the internet at
#      http://www.gnu.org/copyleft/gpl.html.
# 
#   b) Version 1 of Perl's "Artistic License".  You should have received
#      a copy of the Artistic License with this package, in the file
#      named "ARTISTIC".  The license is also available at
#      http://opensource.org/licenses/artistic-license.php.
# 
# This work 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.
# 
# CONTRIBUTION SUBMISSION POLICY:
# 
# (The following paragraph is not intended to limit the rights granted
# to you to modify and distribute this software under the terms of the
# GNU General Public License and is only of importance to you if you
# choose to contribute your changes and enhancements to the community
# by submitting them to Best Practical Solutions, LLC.)
# 
# By intentionally submitting any modifications, corrections or
# derivatives to this work, or any other work intended for use with SVK,
# to Best Practical Solutions, LLC, you confirm that you are the
# copyright holder for those contributions and you grant Best Practical
# Solutions, LLC a nonexclusive, worldwide, irrevocable, royalty-free,
# perpetual, license to use, copy, create derivative works based on
# those contributions, and sublicense and distribute those contributions
# and any derivatives thereof.
# 
# END BPS TAGGED BLOCK }}}
package SVK::Editor::MapRev;
use strict;
use warnings;

use base 'SVK::Editor::ByPass';

__PACKAGE__->mk_accessors(qw(cb_resolve_rev));

sub rev_at {
    my ($self, $method) = @_;
    return 0 if $method eq 'open_root';
    return 1 if $method eq 'delete_entry';
    return 2 if $method =~ m'^open_';
    return 3 if $method =~ m'^add_';
    return -1;
}

sub AUTOLOAD {
    my ($self, @arg) = @_;
    my $func = our $AUTOLOAD;
    $func =~ s/^.*:://;
    return if $func =~ m/^[A-Z]+$/;

    my $rev = $self->rev_at($func);
    unless ($rev == -1) {
	$arg[$rev] = $self->cb_resolve_rev->($func, $arg[$rev]);
    }

    $func = "SUPER::$func";
    $self->$func(@arg);
}

sub wrap_without_copy {
    my ($class, $editor, $revision) = @_;
    return $class->new(
        {   _editor        => [$editor],
            cb_resolve_rev => sub {
                my ( $func, $rev ) = @_;
                return $func =~ m/^add/ ? $rev : $revision;
	    }
        }
    );
}

1;