#! /usr/bin/perl
# $OpenBSD: resolve-lib,v 1.4 2011/11/17 23:14:43 espie Exp $
#
# Copyright (c) 2001-2010 Marc Espie <espie@openbsd.org>
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 2. Neither the name of OpenBSD nor the names of its contributors
#    may be used to endorse or promote products derived from this software
#    without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY ITS AUTHOR AND THE OpenBSD project ``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 REGENTS 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.

use strict;
use warnings;
use OpenBSD::LibSpec;
use OpenBSD::LibSpec::Build;
use OpenBSD::Paths;

my $LOCALBASE = $ENV{LOCALBASE} // '/usr/local';
my $error = 0;
my ($noshared, $needed, $silent) = @_;
my $emited = {};

sub solve_spec
{
	my ($spec, $noshared, $repo) = @_;
	my $r = $spec->findbest($repo, $LOCALBASE);
	if ($needed) {
		if (!defined $r || $r->is_static) {
			return;
		} else {
			exit(0);
		}
	}
	
	if (!defined $r) {
		print STDERR "Missing library for ", $spec->to_string, "\n" 
		    unless $silent;
		$error = 1;
	} else {
		my $string = $spec->key.$r->version;
		unless ($emited->{$string}) {
			$emited->{$string} = 1;
			print $string, "\n" unless $silent;
		}
	}
}


# Grab arguments
while (@ARGV > 0) {
	if ($ARGV[0] eq '-noshared') {
		$noshared = 1;
		shift;
	} elsif ($ARGV[0] eq '-needed') {
		$needed = 1;
		$error = 1;
		shift;
	} elsif ($ARGV[0] eq '-silent') {
		$silent = 1;
		shift;
	} else {
		last;
	}
}

my $_;
my $repo = OpenBSD::LibRepo->new;

while(<STDIN>) {
	chomp;
	for my $s (split(/\s+/, $_)) {
		my $lib = OpenBSD::Library::Build->from_string($s);
		next if !$lib->is_valid;
		next if $noshared and !$lib->is_static;
		$repo->register($lib, 1);
	}
}

my $done = {};
for my $s (@ARGV) {
	my $spec = OpenBSD::LibSpec::Build->from_string($s);
	next if $done->{$spec};
	$done->{$spec} = 1;
	solve_spec($spec, $noshared, $repo);
}

exit($error);