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package SBO::Lib::Tree;
use 5.016;
use strict;
use warnings;
our $VERSION = '2.4';
use SBO::Lib::Util qw/ script_error open_read idx %config /;
use SBO::Lib::Repo qw/ $repo_path $slackbuilds_txt /;
use Exporter 'import';
our @EXPORT_OK = qw{
get_orig_location
get_sbo_location
get_sbo_locations
is_local
};
our %EXPORT_TAGS = (
all => \@EXPORT_OK,
);
=pod
=encoding UTF-8
=head1 NAME
SBO::Lib::Tree - Routines for interacting with a SlackBuilds.org tree.
=head1 SYNOPSIS
use SBO::Lib::tree qw/ is_local /;
my $bool = is_local($sbo);
=head1 SUBROUTINES
=cut
# private variables needed by most subroutines
my $store;
my %local;
my %orig;
=head2 get_orig_location
my $loc = get_orig_location($sbo);
C<get_orig_location()> returns the location in the SlackBuilds.org tree for the
given C<$sbo>.
=cut
sub get_orig_location {
script_error('get_orig_location requires an argument.') unless @_ == 1;
my $sbo = shift;
# Make sure we have checked for the slackbuild in question:
get_sbo_location($sbo);
return $orig{$sbo};
}
=head2 get_sbo_location
my $loc = get_sbo_location($sbo, ...);
my $loc = get_sbo_location([$sbo, ...]);
C<get_sbo_location()> returns the location in the C<LOCAL_OVERRIDES> or the
SlackBuilds.org tree for the first C<$sbo> given.
Specifying more than one C<$sbo> is useful for only needing to access the
filesystem once when searching, and populating the internal cache.
=cut
sub get_sbo_location {
my @sbos = defined $_[0] && ref $_[0] eq 'ARRAY' ? @{ $_[0] } : @_;
script_error('get_sbo_location requires an argument.') unless @sbos;
# if we already have the location, return it now.
return $$store{$sbos[0]} if exists $$store{$sbos[0]};
my %locations = get_sbo_locations(@sbos);
return $locations{$sbos[0]};
}
=head2 get_sbo_locations
my %locations = get_sbo_locations(@sbos);
C<get_sbo_locations> tries to find all C<@sbos> and returns a hash matching the
package name to its location.
=cut
sub get_sbo_locations {
my @sbos = defined $_[0] && ref $_[0] eq 'ARRAY' ? @{ $_[0] } : @_;
script_error('get_sbo_locations requires an argument.') unless @_;
my %locations;
# if an sbo is already in the $store, set the %location for it and filter it out
@sbos = grep { exists $$store{$_} ? ($locations{$_} = $$store{$_}, 0) : 1 } @sbos;
return %locations unless @sbos;
my ($fh, $exit) = open_read($slackbuilds_txt);
if ($exit) {
warn $fh;
exit $exit;
}
while (my $line = <$fh>) {
my ($loc, $sbo) = $line =~ m!LOCATION:\s+\.(/[^/]+/([^/\n]+))$!
or next;
my $found = idx($sbo, @sbos);
next unless defined $found;
$$store{$sbo} = $repo_path . $loc;
$locations{$sbo} = $$store{$sbo};
splice @sbos, $found, 1;
last unless @sbos;
}
close $fh;
# after we've checked the regular sbo locations, we'll see if it needs to
# be overridden by a local change
my $local = $config{LOCAL_OVERRIDES};
unless ( $local eq 'FALSE' ) {
for my $sbo (@sbos, keys %locations) {
my $loc = "$local/$sbo";
next unless -d $loc;
$$store{$sbo} = $loc;
$orig{$sbo} //= $locations{$sbo};
$locations{$sbo} = $loc;
$local{$sbo} = $local;
}
}
return %locations;
}
=head2 is_local
my $bool = is_local($sbo);
C<is_local()> checks whether the given C<$sbo> is in the C<LOCAL_OVERRIDES> or
not, and returns a true value if it is, and a false value if it isn't.
=cut
sub is_local {
script_error('is_local requires an argument.') unless @_ == 1;
my $sbo = shift;
# Make sure we have checked for the slackbuild in question:
get_sbo_location($sbo);
return !!$local{$sbo};
}
=head1 AUTHORS
SBO::Lib was originally written by Jacob Pipkin <j@dawnrazor.net> with
contributions from Luke Williams <xocel@iquidus.org> and Andreas
Guldstrand <andreas.guldstrand@gmail.com>.
=head1 LICENSE
The sbotools are licensed under the WTFPL <http://sam.zoy.org/wtfpl/COPYING>.
Copyright (C) 2012-2017, Jacob Pipkin, Luke Williams, Andreas Guldstrand.
=cut
1;
|
