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$OpenBSD: OpenBSD::PackageName.pod,v 1.2 2006/02/22 18:34:49 bernd Exp $
=head1 NAME
OpenBSD::PackageName - package names handling
=head1 SYNOPSIS
use OpenBSD::PackageName;
$pkgname = OpenBSD::PackageName::url2pkgname($url);
($stem, $version, @flavors) = OpenBSD::PackageName::splitname($pkgname);
$stem = OpenBSD::PackageName::splitstem($pkgname);
OpenBSD::PackageName::is_stem($stem) == 1
OpenBSD::PackageName::is_stem($pkgname) == 0;
@candidates = OpenBSD::PackageName::findstem($stem, @pkgnames);
# alternate interface
$h = OpenBSD::PackageName::compile_stemlist(@pkgnames);
@candidates = $h->findstem($stem);
=head1 DESCRIPTION
C<OpenBSD::PackageName> is the canonical interface to package names
handling.
=over 4
=item C<OpenBSD::PackageName::url2pkgname($url)>
strip an C<$url> of path elements and C<.tgz> suffixes, yield a canonicalized
package name.
=item C<OpenBSD::PackageName::splitname($pkgname)>
split a C<$pkgname> into a C<$stem>, a C<$version> number, and a (possibly
empty) list of C<@flavors> components. If the name contains no identifiable
version, C<$version> will be C<undef>.
=item C<OpenBSD::PackageName::splitstem($pkgname)>
short version of C<splitname> that extracts only the C<$stem>.
=item C<OpenBSD::PackageName::is_stem($string)>
check whether a C<$string> is a valid stem, as opposed to a full package name.
Useful for commands that take either full names or stems, and need to
reconstruct the full name from the stem.
=item C<OpenBSD::PackageName::findstem($stem, @pkgnames)>
look up a C<$stem> into a list of C<@pkgnames>. Return a list of candidates
for further processing.
=item C<OpenBSD::PackageName::compile_stemlist(@pkgnames)>
alternate interface that is faster when lots of look ups are involved.
Compile a list of C<@pkgnames> into an object C<$h> that can be queried
using C<$h-E<gt>findstem($stem)>.
=back
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