#!/bin/bash
# --- SDE-COPYRIGHT-NOTE-BEGIN ---
# This copyright note is auto-generated by ./scripts/Create-CopyPatch.
#
# Filename: lib/misc/GenDepGraph.sh
# Copyright (C) 2008 The OpenSDE Project
# Copyright (C) 2004 - 2006 The T2 SDE Project
#
# More information can be found in the files COPYING and README.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; version 2 of the License. A copy of the
# GNU General Public License can be found in the file COPYING.
# --- SDE-COPYRIGHT-NOTE-END ---

if [ -z "$1" ] ; then
    cat  1>&2 <<-EOT
graphviz dependency graph generator
usage:
    $0 <list of package dirs>

output can be compiled with graphviz, for example:
# $0 package/kde/* > kde-deps.dot
# dot -Tps kde-deps.dot > kde-deps.ps
EOT
    exit 1
fi

pattern=`mktemp`
result=`mktemp`
dscs=;
for p in $@ ; do
    desc=`ls $p/*.cache 2> /dev/null | head -n 1`
    if [ -r "$desc" ] ; then
	dscs="$dscs "$desc
	echo '\[DEP\] '`basename $p` >> $pattern
    else
	echo "warning: no cache file for $p" 1>&2
    fi
done

grep -f $pattern $dscs > $result

echo "Digraph G {"
sed 's,.*/\([^.]*\).*\[DEP\] \(.*\),\"\1\" -> \"\2\",g' $result
echo "}"

rm $pattern
rm $result