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## -------------------------------------------------------------------------------- |
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## $Id: Struct.pm,v 1.3 2002/12/13 21:47:04 joko Exp $ |
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## -------------------------------------------------------------------------------- |
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## $Log: Struct.pm,v $ |
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## Revision 1.3 2002/12/13 21:47:04 joko |
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## + fixes to 'sub isEmpty' |
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## |
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## Revision 1.2 2002/12/05 07:56:34 joko |
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## + updated/enhanced isEmpty (hacky?) |
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## |
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## Revision 1.1 2002/11/29 04:49:30 joko |
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## + initial check-in |
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## |
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## -------------------------------------------------------------------------------- |
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|
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|
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package Data::Compare::Struct; |
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|
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use strict; |
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use warnings; |
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|
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require Exporter; |
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our @ISA = qw( Exporter ); |
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our @EXPORT_OK = qw( |
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&getRelations |
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&getDifference |
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&isEmpty |
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); |
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|
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use Data::Dumper; |
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|
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sub getRelations { |
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my $a_ref = shift; |
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my $b_ref = shift; |
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my @a = @{$a_ref}; |
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my @b = @{$b_ref}; |
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|
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my @isect = my @diff = my @union = (); |
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my $e; |
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my %count; |
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|
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foreach $e (@a, @b) { $count{$e}++ } |
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|
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foreach $e (keys %count) { |
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push(@union, $e); |
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push @{ $count{$e} == 2 ? \@isect : \@diff }, $e; |
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} |
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|
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# bugfix: a diff is no diff if we don't even have an isect |
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@diff = undef if !@isect; |
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|
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my $result = { |
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union => \@union, |
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isect => \@isect, |
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diff => \@diff, |
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}; |
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|
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return $result; |
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|
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} |
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|
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sub getDifference { |
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my $res = getRelations(shift, shift); |
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return $res->{diff}; |
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} |
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|
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sub isEmpty { |
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|
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my $var = shift; |
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my $ref = ref($var); |
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my $reftype = ''; |
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$reftype = attributes::reftype($var) if $ref; |
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|
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#print "isEmpty is parsing variable ( ref $ref reftype $reftype )", "\n"; |
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|
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#print Dumper($var); |
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|
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my $found; |
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|
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if ($ref eq 'Set::Object') { |
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$found = 1; |
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#print "members:", "\n"; |
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#print Dumper($var->members()); |
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#print "\n"; |
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my $tc = { ok => 0, count => 0, empty => 0 }; |
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foreach ($var->members()) { |
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#print "member!!", "\n"; |
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#print "empty: ", isEmpty($_), "\n"; |
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#$tc->{ok} = 1; |
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$tc->{count}++; |
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$tc->{empty}++ if isEmpty($_); |
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#return $result if $result; |
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} |
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|
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#print Dumper($tc); |
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|
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return 1 if ($tc->{count} == $tc->{empty}); |
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return 0; |
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|
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} |
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|
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if ($reftype eq 'ARRAY') { |
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my @arr = @$var; |
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my $isReallyEmpty = ($#arr == -1 ? 1 : 0); |
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return 1 if $isReallyEmpty; |
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$found = 1; |
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foreach (@arr) { |
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#return 0 if defined $_; |
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#return 1 if isEmpty($_); |
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return 0 if !isEmpty($_); |
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} |
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|
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} elsif ($reftype eq 'HASH') { |
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my $empty = 1; |
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$found = 1; |
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foreach (keys %$var) { |
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# TODO: review and fix this! |
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=pod |
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# recursion |
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if (ref $var->{$_} eq 'Set::Object') { |
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print "==========set", "\n"; |
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if (isEmpty($var->{$_})) { |
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return 0; |
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#next; |
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} |
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} |
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=cut |
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next if ref $var->{$_} eq 'Set::Object'; |
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#return 0 if defined $var->{$_}; |
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#return 1 if isEmpty($var->{$_}); |
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my $elem_empty = isEmpty($var->{$_}); |
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|
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#print "elem: $elem_empty\n"; |
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$empty &&= $elem_empty; |
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} |
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return $empty; |
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#return 0; |
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|
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} else { |
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$found = 1; |
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return 0 if defined $var; |
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} |
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|
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if (!$found) { |
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print "isEmpty could not parse variable ( ref $ref reftype $reftype )", "\n"; |
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} |
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|
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#print "EMPTY!!!", "\n"; |
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|
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return 1; |
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|
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} |
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|
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1; |
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