1 files changed, 116 insertions, 0 deletions
diff --git a/navit/script/osm/border_follower.pl b/navit/script/osm/border_follower.pl
new file mode 100755
index 00000000..2bb517ea
--- /dev/null
+++ b/navit/script/osm/border_follower.pl
@@ -0,0 +1,116 @@
+#! /usr/bin/perl
+# Do a
+# svn co http://svn.openstreetmap.org/applications/utils/perl_lib/Geo
+# and
+# svn co http://svn.openstreetmap.org/applications/utils/perl_lib/Utils
+# first
+# Example usage:
+# ./border_follower.pl 10359135 Germany 2 country state
+use Geo::OSM::APIClientV5;
+use Data::Dumper;
+$first_wayid=$ARGV[0];
+$name=$ARGV[1];
+$required_admin_level=$ARGV[2];
+$type=$ARGV[3];
+$alt_type=$ARGV[4];
+$revers=0;
+$api=new Geo::OSM::APIClient(api=>'http://www.openstreetmap.org/api/0.5');
+$wayid=$first_wayid;
+$path="$first_wayid";
+sub error
+{
+	my ($message)=@_;
+	$node=$api->get_node($last);
+	print "$message at  $last $node->{lat} $node->{lon}\n";
+	$latl=$node->{lat}-0.01;
+	$lath=$node->{lat}+0.01;
+	$lonl=$node->{lon}-0.01;
+	$lonh=$node->{lon}+0.01;
+	system("wget -O error.osm http://www.openstreetmap.org/api/0.5/map?bbox=$lonl,$latl,$lonh,$lath ; java -jar ~/map/osm/josm/josm-latest.jar error.osm --selection=id:$last");
+	exit(1);
+}
+
+do {
+	print "Following $wayid\n";
+	$way=$api->get_way($wayid);
+#	print Dumper($way->{'tags'});
+
+	$nodes=$way->nodes;
+	$tags = $way->tags;
+	$reverse=0;
+#	print Dumper($tags);
+	while( my($k,$v) = splice @{$tags}, 0, 2 ) {
+		if (($k eq "left:$type" || $k eq "left:$alt_type") && $v eq $name) {
+			$reverse=1;
+		}
+	}
+	if ($reverse) {
+		$first=$nodes->[$#$nodes];
+		$last=$nodes->[0];
+	} else {
+		$first=$nodes->[0];
+		$last=$nodes->[$#$nodes];
+	}
+	$ways=$api->get_node_ways($last);
+
+#	print "first=$first\n";
+#	print "last=$last\n";
+
+	print "$#$ways Ways\n";
+	if ($#$ways <= 0) {
+		error "End";
+	}
+	$lastid=$wayid;
+	$count=0;
+	foreach $way (@$ways) {
+		$newid=$way->{'id'};
+		print "Way $newid\n";
+		my $tags = $way->tags;
+		$match=0;
+		$boundary=0;
+		$admin_level=0;
+		while( my($k,$v) = splice @{$tags}, 0, 2 ) {
+			print "tag: $k=$v\n";
+			if (($k eq "left:$type" || $k eq "right:$type") && $v eq $name && $newid != $lastid) {
+				$match=1;
+			}
+			if (($k eq "left:$alt_type" || $k eq "right:$alt_type") && $v eq $name && $newid != $lastid) {
+				print "Warning: $k in $newid\n";
+				$match=1;
+			}
+			if ($k eq "boundary") {
+				if ($boundary == 0 && $v eq "administrative") {
+					$boundary=1;
+				} else {
+					$boundary=2;
+				}
+			}
+			if ($k eq "admin_level") {
+				if ($admin_level == 0 && $v eq $required_admin_level) {
+					$admin_level=1;
+				} else {
+					$admin_level=2;
+				}
+			}
+		}
+		print "match=$match\n";
+		if ($match) {
+			if ($boundary != 1 ) {
+				print "boundary $boundary wrong at $newid\n"
+			}
+			if ($admin_level != 1) {
+				print "admin_level $admin_level wrong at $newid\n"
+			}
+			$wayid=$newid;
+			$count++;
+		}
+	}
+	if ($count != 1) {
+		error "Count: $count != 1" 
+	} else {
+		$path="$path $wayid";
+	}
+} while ($wayid != $first_wayid);
+print "End reached\n";
+print "Path $path\n";
+#print Dumper($ways);