OpenBSD::Search(3p) Perl Programmers Reference Guide OpenBSD::Search(3p)NAMEOpenBSD::Search - package names matching framework
SYNOPSIS
use OpenBSD::Search;
# pkgspec objects
my $search_object = OpenBSD::Search::PkgSpec->new($pattern);
my $filter_object = OpenBSD::Search::Filter->keep_most_recent;
# need repository to apply to
use OpenBSD::PackageRepository::Installed;
my $inst = OpenBSD::PackageRepository::Installed->new;
my $list_ref = $inst->match_locations($search_object, $filter_object);
DESCRIPTION
"OpenBSD::Search" provides a search infrastructure for
"OpenBSD::PackageRepository" objects.
A given repository can be searched for existing packages using
"$repo->match_locations($search1, $filter1, ...);"
It returns a reference to a list of matching "OpenBSD::PackageLocation"
objects.
A repository list can be searched in a similar way: the search proceeds
through each repository in the list, and stops as soon as it finds a
non-empty match (similar to "ld -L" rules).
The first search object $search is used to find the basic set of
matching packages, and further objects are used to weed out unwanted
elements from the list.
Complex searches must be built as lists of filter objects, in order to
preserve RepositoryList semantics, and ensure the correct non-empty
first match is returned.
The infrastructure provides the following objects:
OpenBSD::Search::PkgSpec
"OpenBSD::PkgSpec" filters.
OpenBSD::Search::Stem
finds all packages with a given stem.
OpenBSD::Search::PartialStem
finds all packages including a partial stem.
OpenBSD::Search::Filter
filters package list through further tests.
perl v5.12.2 June 30, 2010
