| 1 |
#
|
| 2 |
# Maintain a variable to indicate status of a number of requirements
|
| 3 |
#
|
| 4 |
# --------------
|
| 5 |
# Interface
|
| 6 |
#
|
| 7 |
# exclude(gp) : exclude a group
|
| 8 |
# unexclude(gp) : unexclude a group
|
| 9 |
# include(gp) : include a group
|
| 10 |
# uninclude(gp) : uninclude a group
|
| 11 |
# opencontext(gp) : Annonce group context
|
| 12 |
# closecontext(gp) : Close group context
|
| 13 |
# closelastcontext(set) : Close the last context added to group the group set
|
| 14 |
# status() : If include/excluded groups match the current gp context
|
| 15 |
# return 1 else 0
|
| 16 |
# getincluded() : return an array of included groups
|
| 17 |
# getexcluded() : return array of excluded groups
|
| 18 |
# ----------------------------------------------
|
| 19 |
# group names are characters. Anything before a :: will indicate the
|
| 20 |
# group set upon which the closecontext etc will operate. The group set is
|
| 21 |
# still part of the group name.
|
| 22 |
#
|
| 23 |
|
| 24 |
package GroupChecker;
|
| 25 |
require 5.001;
|
| 26 |
require Exporter;
|
| 27 |
@ISA=qw(Exporter);
|
| 28 |
|
| 29 |
sub new {
|
| 30 |
my $class=shift;
|
| 31 |
$self={};
|
| 32 |
bless $self, $class;
|
| 33 |
$self->{context}{none}=1;
|
| 34 |
return $self;
|
| 35 |
}
|
| 36 |
|
| 37 |
sub exclude {
|
| 38 |
my $self=shift;
|
| 39 |
my $gp=shift;
|
| 40 |
|
| 41 |
${$self->{exclude}}{$gp}=1;
|
| 42 |
$self->_setstatus;
|
| 43 |
}
|
| 44 |
|
| 45 |
sub unexclude {
|
| 46 |
my $self=shift;
|
| 47 |
my $gp=shift;
|
| 48 |
|
| 49 |
delete ${$self->{exclude}}{$gp};
|
| 50 |
$self->_setstatus;
|
| 51 |
}
|
| 52 |
|
| 53 |
sub include {
|
| 54 |
my $self=shift;
|
| 55 |
my $gp=shift;
|
| 56 |
|
| 57 |
${$self->{include}}{$gp}=1;
|
| 58 |
$self->_setstatus;
|
| 59 |
}
|
| 60 |
|
| 61 |
sub uninclude {
|
| 62 |
my $self=shift;
|
| 63 |
my $gp=shift;
|
| 64 |
|
| 65 |
delete ${$self->{include}}{$gp};
|
| 66 |
$self->_setstatus;
|
| 67 |
}
|
| 68 |
|
| 69 |
sub getexcluded {
|
| 70 |
my $self=shift;
|
| 71 |
return keys %{$self->{exclude}}
|
| 72 |
}
|
| 73 |
|
| 74 |
sub getincluded {
|
| 75 |
my $self=shift;
|
| 76 |
return keys %{$self->{include}}
|
| 77 |
}
|
| 78 |
|
| 79 |
sub opencontext {
|
| 80 |
my $self=shift;
|
| 81 |
my $gp=shift;
|
| 82 |
|
| 83 |
( $gp=~/(.*)::/ ? $set=$1 : $set='none' );
|
| 84 |
|
| 85 |
push @{$self->{contextstack}{$set}}, $gp;
|
| 86 |
$self->{context}{$gp}=1;
|
| 87 |
$self->_setstatus();
|
| 88 |
}
|
| 89 |
|
| 90 |
sub closelastcontext {
|
| 91 |
my $self=shift;
|
| 92 |
my $set=shift;
|
| 93 |
my $gp;
|
| 94 |
|
| 95 |
if ( $set eq "" ) { $set='none' }
|
| 96 |
do {
|
| 97 |
$gp=pop @{$self->{contextstack}{$set}};
|
| 98 |
} while ( ! exists $self->{context}{$gp} );
|
| 99 |
$self->closecontext($gp);
|
| 100 |
}
|
| 101 |
|
| 102 |
sub closecontext {
|
| 103 |
my $self=shift;
|
| 104 |
my $gp=shift;
|
| 105 |
|
| 106 |
( $gp=~/(.*)::/ ? $set=$1 : $set='none' );
|
| 107 |
delete $self->{context}{$gp};
|
| 108 |
$self->_setstatus();
|
| 109 |
}
|
| 110 |
|
| 111 |
sub status {
|
| 112 |
my $self=shift;
|
| 113 |
return $self->{status};
|
| 114 |
}
|
| 115 |
|
| 116 |
# -------------- Support Routines -----------------------------------
|
| 117 |
|
| 118 |
sub _setstatus {
|
| 119 |
my $self=shift;
|
| 120 |
my $i;
|
| 121 |
|
| 122 |
$self->{status}=0; # If not on exclude or include then always false
|
| 123 |
foreach $i ( keys %{$self->{context}} ) {
|
| 124 |
if ( ( exists $self->{include}{$i} )
|
| 125 |
|| ( exists $self->{include}{all} ) ) {
|
| 126 |
$self->{status}=1;
|
| 127 |
}
|
| 128 |
if ( exists $self->{exclude}{$i} ) {
|
| 129 |
$self->{status}=0;
|
| 130 |
}
|
| 131 |
}
|
| 132 |
}
|
