1#! /bin/sh
2#
3# SPDX-License-Identifier: BSD-3-Clause
4#
5# Copyright (c) 1992, 1993
6#	The Regents of the University of California.  All rights reserved.
7#
8# Redistribution and use in source and binary forms, with or without
9# modification, are permitted provided that the following conditions
10# are met:
11# 1. Redistributions of source code must retain the above copyright
12#    notice, this list of conditions and the following disclaimer.
13# 2. Redistributions in binary form must reproduce the above copyright
14#    notice, this list of conditions and the following disclaimer in the
15#    documentation and/or other materials provided with the distribution.
16# 3. Neither the name of the University nor the names of its contributors
17#    may be used to endorse or promote products derived from this software
18#    without specific prior written permission.
19#
20# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23# ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30# SUCH DAMAGE.
31# systags.sh - construct a system tags file using dependence relations
32#	in a .depend file
33#
34# First written May 16, 1992 by Van Jacobson, Lawrence Berkeley Laboratory.
35
36rm -f tags tags.tmp tags.cfiles tags.sfiles tags.hfiles
37sed -e "s, machine/, ../../include/,g" \
38	-e 's,[a-z][^/    ]*/\.\./,,g' .depend.* | awk '{
39		for (i = 1; i <= NF; ++i) {
40			t = substr($i, length($i) - 1)
41			if (t == ".c")
42				cfiles[$i] = 1;
43			else if (t == ".h")
44				hfiles[$i] = 1;
45			else if (t == ".s" || t == ".S")
46				sfiles[$i] = 1;
47		}
48	};
49	END {
50		for (i in cfiles)
51			print i > "tags.cfiles";
52		for (i in sfiles)
53			print i > "tags.sfiles";
54		for (i in hfiles)
55			print i > "tags.hfiles";
56	}'
57
58ctags -t -d -w `cat tags.cfiles tags.hfiles tags.sfiles`
59egrep "^ENTRY\(.*\)|^ALTENTRY\(.*\)" `cat tags.sfiles` | \
60    sed "s;\([^:]*\):\([^(]*\)(\([^, )]*\)\(.*\);\3	\1	/^\2(\3\4$/;" >> tags
61
62mv tags tags.tmp
63sort -u tags.tmp > tags
64rm tags.tmp tags.cfiles tags.sfiles tags.hfiles
65