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package RPM::Query::Capability; |
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use strict; |
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use warnings; |
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use base qw{Package::New}; |
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our $VERSION = '0.02'; |
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=head1 NAME |
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RPM::Query - Perl object overlay of an RPM capability |
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=head1 SYNOPSIS |
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use RPM::Query; |
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my $rpm = RPM::Query->new; |
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my $capabilities = $rpm->requires('perl'); #isa ARRAY of RPM::Query::Capability |
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foreach my $capability (@$capabilities) { |
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printf "%s - %s\n", $capability->name, $capability->package->name; |
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} |
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=head1 DESCRIPTION |
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=head1 METHODS |
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=head2 capability_name |
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Returns the capability name with optional version as returns by the rpm command. |
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perl(Scalar::Util) >= 1.10 |
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perl(strict) |
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=cut |
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sub capability_name { |
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my $self = shift; |
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$self->{'capability_name'} = shift if @_; |
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die("Error: capability_name property required") unless $self->{'capability_name'}; |
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return $self->{'capability_name'}; |
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} |
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sub _capability_name { |
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my $self = shift; |
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unless (defined $self->{'_capability_name'}) { |
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my $hash = {}; |
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if ($self->capability_name =~ m/\A(.*)\s+(>=|<=|=)\s+(.*)\Z/) { |
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$hash->{'name'} = $1; |
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$hash->{'compare'} = $2; |
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$hash->{'version'} = $3; |
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} else { |
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$hash->{'name'} = $self->capability_name; |
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$hash->{'version'} = ''; |
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$hash->{'compare'} = undef; |
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} |
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$self->{'_capability_name'} = $hash; |
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} |
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return $self->{'_capability_name'}; |
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} |
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=head2 name |
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=cut |
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sub name {shift->_capability_name->{'name'}}; |
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=head2 version |
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=cut |
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sub version {shift->_capability_name->{'version'}}; |
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=head2 package |
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Returns the first package (alphabetically) that provides this capability |
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=cut |
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sub package {shift->whatprovides->[0]}; |
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=head2 whatprovides |
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Returns a list of package objects that provides this capability. |
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=cut |
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sub whatprovides { |
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my $self = shift; |
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unless ($self->{'whatprovides'}) { |
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$self->{'whatprovides'} = $self->parent->whatprovides($self->name) or die("Error: package not found"); |
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} |
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return $self->{'whatprovides'}; |
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} |
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=head1 ACCESSORS |
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=head2 parent |
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=cut |
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sub parent { |
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my $self = shift; |
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$self->{'parent'} = shift if @_; |
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$self->{'parent'} = RPM::Query->new unless $self->{'parent'}; |
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return $self->{'parent'}; |
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} |
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=head1 SEE ALSO |
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=head1 AUTHOR |
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Michael R. Davis |
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=head1 COPYRIGHT AND LICENSE |
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MIT License |
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Copyright (c) 2023 Michael R. Davis |
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=cut |
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1; |