3 files changed, 53 insertions, 0 deletions
diff --git a/src/Makefile b/src/Makefile
index e375034..ffbf8d6 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -3,5 +3,9 @@
 
 SUBDIR=		test libeinfo librc rc
 
+ifeq (${MKTOOLS},yes)
+SUBDIR+= tools
+endif
+
 MK=		../mk
 include		${MK}/subdir.mk
diff --git a/src/tools/Makefile b/src/tools/Makefile
new file mode 100644
index 0000000..92ff506
--- /dev/null
+++ b/src/tools/Makefile
@@ -0,0 +1,5 @@
+DIR=	${UPREFIX}/bin
+BIN=	deptree2dot
+
+MK=	../../mk
+include ${MK}/scripts.mk
diff --git a/src/tools/deptree2dot b/src/tools/deptree2dot
new file mode 100644
index 0000000..07ba17a
--- /dev/null
+++ b/src/tools/deptree2dot
@@ -0,0 +1,44 @@
+#!/usr/bin/perl -w
+# -*- cperl -*-
+# Copyright © 2012 Diego Elio Pettenò <flameeyes@flameeyes.eu>
+# Released under the 2-clause BSD license.
+#
+#Example usage:
+#deptree2dot > deptree.dot
+#deptree2dot | dot -Tpng -o deptree.png
+
+my $deptree = defined($ARGV[0]) ? $ARGV[0] : "/run/openrc/deptree";
+
+open DEPTREE, $deptree or exit 1;
+
+print "digraph deptree {\n";
+
+my @deptree;
+
+while(my $line = readline(DEPTREE)) {
+  $line =~ /^depinfo_([0-9]+)_([a-z]+)(?:_[0-9]+)?='(.*)'\n$/;
+  my $index = $1;
+  my $prop = $2;
+  my $value = $3; $value =~ s/[-\.:~]/_/g;
+
+  if ( $prop eq "service" ) {
+    $deptree[$index] = $value;
+    printf "%s [shape=box];\n", $value;
+  } else {
+    my $service = $deptree[$index];
+
+    if ( $prop eq "ineed" ) {
+      printf "%s -> %s;\n", $service, $value;
+    } elsif ( $prop eq "iuse" ) {
+      printf "%s -> %s [color=blue];\n", $service, $value;
+    } elsif ( $prop eq "ibefore" ) {
+      printf "%s -> %s [style=dotted];\n", $service, $value;
+    } elsif ( $prop eq "iafter" ) {
+      printf "%s -> %s [style=dotted color=purple];\n", $value, $service;
+    } elsif ( $prop eq "iprovide" ) {
+      printf "%s -> %s [color=red];\n", $value, $service;
+    }
+  }
+}
+
+print "}\n";