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# ex:ts=8 sw=4:
# $OpenBSD: RequiredBy.pm,v 1.2 2004/01/27 00:04:36 espie Exp $
#
# Copyright (c) 2003 Marc Espie.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE OPENBSD PROJECT AND CONTRIBUTORS
# ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OPENBSD
# PROJECT OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
package OpenBSD::RequiredBy;
use strict;
use warnings;
use OpenBSD::PackageInfo;
sub new
{
my ($class, $pkgname) = @_;
my $f = installed_info($pkgname).REQUIRED_BY;
bless \$f, $class;
}
sub list($)
{
my $self = shift;
my $l = [];
return $l unless -f $$self;
open(my $fh, '<', $$self) or
die "Problem opening required list: $$self: $!";
local $_;
while(<$fh>) {
chomp $_;
s/\s+$//;
next if /^$/;
push(@$l, $_);
}
close($fh);
return $l;
}
sub delete
{
my ($self, $pkgname) = @_;
my @lines = grep { $_ ne $pkgname } @{$self->list()};
unlink($$self) or die "Can't erase $$self: $!";
if (@lines > 0) {
$self->add(@lines);
}
}
sub add
{
my ($self, @pkgnames) = @_;
open(my $fh, '>>', $$self) or
die "Can't add dependencies to $$self: $!";
print $fh join("\n", @pkgnames), "\n";
close($fh);
}
sub DESTROY
{
}
1;
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