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+# BEGIN LICENSE BLOCK
+# 
+# Copyright (c) 1996-2003 Jesse Vincent <jesse@bestpractical.com>
+# 
+# (Except where explictly superceded by other copyright notices)
+# 
+# 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.
+# 
+# Unless otherwise specified, all modifications, corrections or
+# extensions to this work which alter its source code become the
+# property of Best Practical Solutions, LLC when submitted for
+# inclusion in the work.
+# 
+# 
+# END LICENSE BLOCK
+package RT::Base;
+use Carp;
+use Scalar::Util;
+
+use strict;
+use vars qw(@EXPORT);
+
+@EXPORT=qw(loc CurrentUser);
+
+=head1 FUNCTIONS
+
+
+
+# {{{ sub CurrentUser 
+
+=head2 CurrentUser
+
+If called with an argument, sets the current user to that user object.
+This will affect ACL decisions, etc.  
+Returns the current user
+
+=cut
+
+sub CurrentUser {
+    my $self = shift;
+
+    if (@_) {
+        $self->{'original_user'} = $self->{'user'};
+        $self->{'user'} = shift;
+        Scalar::Util::weaken($self->{'user'}) if (ref($self->{'user'}) &&
+                                                    $self->{'user'} == $self );
+    }
+
+    unless ( ref( $self->{'user'}) ) {
+        $RT::Logger->err( "$self was created without a CurrentUser\n" . Carp::cluck() );
+        return (0);
+        die;
+    }
+    return ( $self->{'user'} );
+}
+
+# }}}
+
+sub OriginalUser {
+    my $self = shift;
+
+    if (@_) {
+        $self->{'original_user'} = shift;
+        Scalar::Util::weaken($self->{'original_user'})
+            if (ref($self->{'original_user'}) && $self->{'original_user'} == $self );
+    }
+    return ( $self->{'original_user'} || $self->{'user'} );
+}
+
+
+=item loc LOC_STRING
+
+l is a method which takes a loc string
+to this object's CurrentUser->LanguageHandle for localization. 
+
+you call it like this:
+
+    $self->loc("I have [quant,_1,concrete mixer].", 6);
+
+In english, this would return:
+    I have 6 concrete mixers.
+
+
+=cut
+
+sub loc {
+    my $self = shift;
+    if (my $user = $self->OriginalUser) {
+        return $user->loc(@_);
+    }
+    else {
+        use Carp;
+        Carp::confess("No currentuser");
+        return ("Critical error:$self has no CurrentUser", $self);
+    }
+}
+
+eval "require RT::Base_Vendor";
+die $@ if ($@ && $@ !~ qr{^Can't locate RT/Base_Vendor.pm});
+eval "require RT::Base_Local";
+die $@ if ($@ && $@ !~ qr{^Can't locate RT/Base_Local.pm});
+
+
+1;