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# BEGIN BPS TAGGED BLOCK {{{
#
# COPYRIGHT:
#
# This software is Copyright (c) 1996-2011 Best Practical Solutions, LLC
# <sales@bestpractical.com>
#
# (Except where explicitly superseded by other copyright notices)
#
#
# LICENSE:
#
# This work is made available to you under the terms of Version 2 of
# the GNU General Public License. A copy of that license should have
# been provided with this software, but in any event can be snarfed
# from www.gnu.org.
#
# 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.
#
# 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/licenses/old-licenses/gpl-2.0.html.
#
#
# 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
# Request Tracker, 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 RT::Shredder::Plugin::Base;
use strict;
use warnings FATAL => 'all';
=head1 NAME
RT::Shredder::Plugin::Base - base class for Shredder plugins.
=cut
sub new
{
my $proto = shift;
my $self = bless( {}, ref $proto || $proto );
$self->_Init( @_ );
return $self;
}
sub _Init
{
my $self = shift;
$self->{'opt'} = { @_ };
}
=head1 USAGE
=head2 masks
If any argument is marked with keyword C<mask> then it means
that this argument support two special characters:
1) C<*> matches any non empty sequence of the characters.
For example C<*@example.com> will match any email address in
C<example.com> domain.
2) C<?> matches exactly one character.
For example C<????> will match any string four characters long.
=head1 METHODS
=head2 for subclassing in plugins
=head3 Type - is not supported yet
See F<Todo> for more info.
=cut
sub Type { return '' }
=head3 SupportArgs
Takes nothing.
Returns list of the supported plugin arguments.
Base class returns list of the arguments which all
classes B<must> support.
=cut
sub SupportArgs { return () }
=head3 HasSupportForArgs
Takes a list of argument names. Returns true if
all arguments are supported by plugin and returns
C<(0, $msg)> in other case.
=cut
sub HasSupportForArgs
{
my $self = shift;
my @args = @_;
my @unsupported = ();
foreach my $a( @args ) {
push @unsupported, $a unless grep $_ eq $a, $self->SupportArgs;
}
return( 1 ) unless @unsupported;
return( 0, "Plugin doesn't support argument(s): @unsupported" ) if @unsupported;
}
=head3 TestArgs
Takes hash with arguments and thier values and returns true
if all values pass testing otherwise returns C<(0, $msg)>.
Stores arguments hash in C<$self->{'opt'}>, you can access this hash
from C<Run> method.
Method should be subclassed if plugin support non standard arguments.
=cut
sub TestArgs
{
my $self = shift;
my %args = @_;
if ( $self->{'opt'} ) {
$self->{'opt'} = { %{$self->{'opt'}}, %args };
} else {
$self->{'opt'} = \%args;
}
return 1;
}
=head3 Run
Takes no arguments.
Executes plugin and return C<(1, @objs)> on success or
C<(0, $msg)> if error had happenned.
Method B<must> be subclassed, this class always returns error.
Method B<must> be called only after C<TestArgs> method in other
case values of the arguments are not available.
=cut
sub Run { return (0, "This is abstract plugin, you couldn't use it directly") }
=head2 utils
=head3 ConvertMaskToSQL
Takes one argument - mask with C<*> and C<?> chars and
return mask SQL chars.
=cut
sub ConvertMaskToSQL {
my $self = shift;
my $mask = shift || '';
$mask =~ s/\*/%/g;
$mask =~ s/\?/_/g;
return $mask;
}
1;
|
