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# ex:ts=8 sw=4:
# $OpenBSD: RequiredBy.pm,v 1.5 2004/11/14 11:40:08 espie Exp $
#
# Copyright (c) 2003-2004 Marc Espie <espie@openbsd.org>
#
# Permission to use, copy, modify, and distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
use strict;
use warnings;
package OpenBSD::RequirementList;
use OpenBSD::PackageInfo;
sub list($)
{
my $self = shift;
if (wantarray) {
return () unless -f $$self;
open(my $fh, '<', $$self) or
die "Problem opening required list: $$self: $!";
local $_;
my $l = {};
while(<$fh>) {
chomp $_;
s/\s+$//;
next if /^$/;
$l->{$_} = 1;
}
close($fh);
return keys %$l;
} else {
return -f $$self ? 1 : 0;
}
}
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 new
{
my ($class, $pkgname) = @_;
my $f = installed_info($pkgname).$class->filename();
bless \$f, $class;
}
package OpenBSD::RequiredBy;
our @ISA=qw(OpenBSD::RequirementList);
use OpenBSD::PackageInfo;
sub filename() { REQUIRED_BY };
package OpenBSD::Requiring;
our @ISA=qw(OpenBSD::RequirementList);
use OpenBSD::PackageInfo;
sub filename() { REQUIRING };
1;
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