1 files changed, 81 insertions, 0 deletions
diff --git a/usr.sbin/pkg_add/OpenBSD/RequiredBy.pm b/usr.sbin/pkg_add/OpenBSD/RequiredBy.pm
new file mode 100644
index 00000000000..0ac99cbd5f1
--- /dev/null
+++ b/usr.sbin/pkg_add/OpenBSD/RequiredBy.pm
@@ -0,0 +1,81 @@
+# ex:ts=8 sw=4:
+# $OpenBSD: RequiredBy.pm,v 1.1 2003/10/16 17:43:34 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: $$self\n";
+	local $_;
+	while(<$fh>) {
+		chomp $_;
+		s/\s+$//;
+		next if /^$/;
+		push(@$l, $_);
+	}
+	close($fh);
+	return $l;
+}
+
+sub delete
+{
+	my ($self, $pkgname) = @_;
+	my @lines = grep { $_ ne $pkgname } @{$self->list()};
+	unlink($$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;