1#! /bin/bash
2#
3# mkclone - symlink every file appearing in $src/MANIFEST to a corresponding
4#	    file in the target directory ($1).  Directories specified in
5#	    MANIFEST are created in the target directory
6#
7# Copyright (C) 1996-2002 Free Software Foundation, Inc.
8#
9#   This program is free software: you can redistribute it and/or modify
10#   it under the terms of the GNU General Public License as published by
11#   the Free Software Foundation, either version 3 of the License, or
12#   (at your option) any later version.
13#
14#   This program is distributed in the hope that it will be useful,
15#   but WITHOUT ANY WARRANTY; without even the implied warranty of
16#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17#   GNU General Public License for more details.
18#
19#   You should have received a copy of the GNU General Public License
20#   along with this program.  If not, see <http://www.gnu.org/licenses/>.
21#
22prog=`basename $0`
23
24SRCDIR=src
25
26USAGE="usage: $prog [-m manifest] [-s srcdir] [-v] [-d] [-h] target"
27while getopts dhm:s:v opt
28do
29	case "$opt" in
30	m)	MANIFEST=$OPTARG ;;
31	s)	SRCDIR=$OPTARG ;;
32	v)	verbose=y ;;
33	d)	ECHO=echo debug=y ;;
34	h)	hardlinks=y ;;
35	?)	echo $USAGE >&2
36		exit 2;;
37	esac
38done
39
40: ${MANIFEST:=${SRCDIR}/MANIFEST}
41
42[ -n "$debug" ] && verbose=
43
44shift $(( $OPTIND - 1 ))
45
46if [ $# -lt 1 ]; then
47	echo $USAGE >&2
48        exit 2
49fi
50
51if [ ! -f $MANIFEST ]; then
52	echo "$prog: $MANIFEST: no such file or directory" >&2
53	echo "$prog: must be run with valid -s argument or from source directory" >&2
54	exit 1
55fi
56
57rm_ltmp=false
58LINKTEMP=`mktemp -t linktmp.XXXXXXXX 2>/dev/null`
59if [ -z "$LINKTEMP" ]; then
60	: ${TMPDIR:=/tmp}
61	LINKTEMP=${TMPDIR}/linktmp.$$
62	rm_ltmp=true
63fi
64
65$rm_ltmp && rm -f ${LINKTEMP}
66# if the user specified hard links, then do that.  otherwise, try to use
67# symlinks if they're present
68if [ -n "$hardlinks" ]; then
69	LN=ln
70elif (ln -s /dev/null ${LINKTEMP}) >/dev/null 2>&1; then
71	LN="ln -s"
72else
73	LN=ln
74fi
75rm -f ${LINKTEMP}
76
77TARGET=$1
78
79if [ ! -d "$TARGET" ]; then
80	mkdir "$TARGET"
81fi
82
83echo "${prog}: creating clone of bash source tree (from $SRCDIR) in $TARGET"
84
85cd "$TARGET" || { echo "${prog}: cannot cd to $TARGET" >&2 ; exit 1; }
86
87while read fname type mode
88do
89	[ -z "$fname" ] && continue
90
91	case "$fname" in
92	\#*)	continue ;;
93	esac
94
95	case "$type" in
96	d)	[ -n "$verbose" ] && echo mkdir $fname
97		$ECHO mkdir $fname ;;		# already in $TARGET
98	f)	fn=${fname##*/}
99		case "$fname" in
100		*/*)	dn=${fname%/*} ;;
101		*)	dn=. ;;
102		esac
103		if [ -n "$verbose" ] || [ -n "$debug" ]; then
104			echo "( cd $dn && $LN $SRCDIR/$fname $fn )"
105		fi
106		[ -z "$debug" ] && ( cd $dn && $LN $SRCDIR/$fname $fn )
107		;;
108	*)	echo "${prog}: ${fname}: unknown file type $type" 1>&2 ;;
109	esac
110done < $MANIFEST
111
112# special
113SPECIAL="parser-built y.tab.c y.tab.h"
114
115rm -f $SPECIAL
116for sf in $SPECIAL
117do
118	[ -n "$verbose" ] && echo cp -p $SRCDIR/$sf $TARGET
119	$ECHO cp -p $SRCDIR/$sf $TARGET
120done
121
122exit 0
123