getdirs.awk revision 1.6 
1#	$NetBSD: getdirs.awk,v 1.6 2013/03/12 13:08:00 njoly Exp $
2#
3# Copyright (c) 2002 The NetBSD Foundation, Inc.
4# All rights reserved.
5#
6# This code is derived from software contributed to The NetBSD Foundation
7# by Luke Mewburn of Wasabi Systems.
8#
9# Redistribution and use in source and binary forms, with or without
10# modification, are permitted provided that the following conditions
11# are met:
12# 1. Redistributions of source code must retain the above copyright
13#    notice, this list of conditions and the following disclaimer.
14# 2. Redistributions in binary form must reproduce the above copyright
15#    notice, this list of conditions and the following disclaimer in the
16#    documentation and/or other materials provided with the distribution.
17#
18# THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
19# ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
20# TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
21# PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
22# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
23# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
24# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
25# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
26# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
27# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
28# POSSIBILITY OF SUCH DAMAGE.
29#
30
31
32function dirname(file) \
33{
34	# no need to worry about args that do not contain at least one "/"
35	gsub(/\/[^\/]+$/, "", file)
36	return file
37}
38
39#	skip empty or whitespace-only lines, or lines with comments
40#
41/^[ 	]*(#|$)/ \
42{
43	next
44}
45
46#	skip mtree config lines
47#
48/^\/(un)?set/ \
49{
50	next
51}
52
53#	error if consecutive slashes are found
54#
55/\/\// \
56{
57	print "Unsupported consecutive slashes in path:" >"/dev/stderr"
58	print >"/dev/stderr"
59	exit 1
60}
61
62#	error if path has a trailing slash
63#
64/\/$/ \
65{
66	print "Unsupported path with trailing slash:" >"/dev/stderr"
67	print >"/dev/stderr"
68	exit 1
69}
70
71#	all other lines are parsed 
72#
73{
74	print
75	file = $1
76	items[file]++
77	do {
78		file = dirname(file)
79		dirs[file]++
80	} while (file ~ /\//)
81}
82
83END \
84{
85	for (file in dirs) {
86		if (! (file in items))
87			print file " optional type=dir"
88	}
89}
90