——————————package
DPKG::Log::Analyse::Package;
BEGIN {
$DPKG::Log::Analyse::Package::VERSION
=
'1.20'
;
}
=head1 NAME
DPKG::Log::Analyse::Package - Describe a package as analysed from a dpkg.log
=head1 VERSION
version 1.20
=head1 SYNOPSIS
use DPKG::Log;
my $package = DPKG::Log::Analyse::Package->new('package' => 'foobar');
=head1 DESCRIPTION
This module is used to analyse a dpkg log.
=head1 METHODS
=over 4
=cut
use
strict;
use
warnings;
use
5.010;
use
Carp;
use
DPKG::Log;
use
Dpkg::Version;
use
overload (
'""'
=>
'as_string'
,
'eq'
=>
'equals'
,
'cmp'
=>
'compare'
,
'<=>'
=>
'compare'
);
=item $package = DPKG::Log::Analyse::Package->new('package' => 'foobar')
Returns a new DPKG::Log::Analyse::Package object.
=cut
sub
new {
my
$package
=
shift
;
$package
=
ref
(
$package
)
if
ref
(
$package
);
my
%params
= validate(
@_
, {
'package'
=> {
'type'
=> SCALAR },
'version'
=> 0,
'previous_version'
=> 0,
'status'
=> 0
}
);
my
$self
= {
version
=>
""
,
previous_version
=>
""
,
status
=>
""
,
%params
};
bless
(
$self
,
$package
);
return
$self
;
}
=item $package_name = $package->name;
Returns the name of this package.
=cut
sub
name {
my
$self
=
shift
;
return
$self
->{
package
};
}
=item $package->version
Return or set the version of this package.
=cut
sub
version {
my
(
$self
,
$version
) =
@_
;
if
(
$version
) {
my
$version_obj
= Dpkg::Version->new(
$version
);
$self
->{version} =
$version_obj
;
}
else
{
$version
=
$self
->{version};
}
return
$version
;
}
=item $package->previous_version
Return or set the previous version of this package.
=cut
sub
previous_version {
my
(
$self
,
$previous_version
) =
@_
;
if
(
$previous_version
) {
my
$version_obj
= Dpkg::Version->new(
$previous_version
);
$self
->{previous_version} =
$version_obj
;
}
else
{
$previous_version
=
$self
->{previous_version};
}
return
$previous_version
;
}
=item $package->status
Return or set the status of this package.
=cut
sub
status {
my
(
$self
,
$status
) =
@_
;
if
(
$status
) {
$self
->{status} =
$status
;
}
else
{
$status
=
$self
->{status}
}
return
$status
;
}
=item equals($package1, $package2);
=item print "equal" if $package1 eq $package2
Compares two packages in their string representation.
=cut
sub
equals {
my
(
$first
,
$second
) =
@_
;
return
(
$first
->as_string eq
$second
->as_string);
}
=item compare($package1, $package2)
=item print "greater" if $package1 > $package2
Compare two packages. See B<OVERLOADING> for details on how
the comparison works.
=cut
sub
compare {
my
(
$first
,
$second
) =
@_
;
return
-1
if
(
$first
->name ne
$second
->name);
if
((not
$first
->previous_version) and (not
$second
->previous_version)) {
return
(
$first
->version <=>
$second
->version);
}
elsif
((not
$first
->previous_version) or (not
$second
->previous_version)) {
return
-1;
}
elsif
(
$first
->previous_version !=
$second
->previous_version) {
return
-1;
}
return
((
$first
->version <=>
$second
->version));
}
=item $package_str = $package->as_string
=item printf("Package name: %s", $package);
Return this package as a string. This will return the package name
and the version (if set) in the form package_name/version.
If version is not set, it will return the package name only.
=cut
sub
as_string {
my
$self
=
shift
;
my
$string
=
$self
->{
package
};
if
(
$self
->version) {
$string
=
$string
.
"/"
.
$self
->version;
}
return
$string
;
}
=back
=head1 Overloading
This module explicitly overloads some operators.
Each operand is expected to be a DPKG::Log::Analyse::Package object.
The string comparison operators, "eq" or "ne" will use the string value for the
comparison.
The numerical operators will use the package name and package version for
comparison. That means a package1 == package2 if package1->name equals
package2->name AND package1->version == package2->version.
The module stores versions as Dpkg::Version objects, therefore sorting
different versions of the same package will work.
This module also overloads stringification returning either the package
name if no version is set or "package_name/version" if a version is set.
=cut
=head1 SEE ALSO
L<DPKG::Log>, L<DPKG::Version>
=head1 AUTHOR
Patrick Schoenfeld <schoenfeld@debian.org>.
=head1 COPYRIGHT AND LICENSE
Copyright (C) 2011 Patrick Schoenfeld <schoenfeld@debian.org>
This library is free software.
You can redistribute it and/or modify it under the same terms as perl itself.
=cut
1;
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