Contents of /trunk/mkinitrd-magellan/klibc/usr/dash/funcs/pushd

# Copyright (c) 1991, 1993
#	The Regents of the University of California.  All rights reserved.
# Copyright (c) 1997-2005
#	Herbert Xu <herbert@gondor.apana.org.au>.  All rights reserved.
#
# This code is derived from software contributed to Berkeley by
# Kenneth Almquist.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in the
#    documentation and/or other materials provided with the distribution.
# 3. Neither the name of the University nor the names of its contributors
#    may be used to endorse or promote products derived from this software
#    without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.
#
#	@(#)pushd	8.2 (Berkeley) 5/4/95

# pushd, popd, and dirs --- written by Chris Bertin
# Pixel Computer Inc. ...!wjh12!pixel!pixutl!chris
# as modified by Patrick Elam of GTRI and Kenneth Almquist at UW

pushd () {
	SAVE=`pwd`
	if [ "$1" = "" ]
	then	if [ "$DSTACK" = "" ]
		then	echo "pushd: directory stack empty."
			return 1
		fi
		set $DSTACK
		cd $1 || return
		shift 1
		DSTACK="$*"
	else	cd $1 > /dev/null || return
	fi
	DSTACK="$SAVE $DSTACK"
	dirs
}

popd () {
	if [ "$DSTACK" = "" ]
	then	echo "popd: directory stack empty."
		return 1
	fi
	set $DSTACK
	cd $1
	shift
	DSTACK=$*
	dirs
}

dirs () {
	echo "`pwd` $DSTACK"
	return 0
}
1	# Copyright (c) 1991, 1993
2	# The Regents of the University of California. All rights reserved.
3	# Copyright (c) 1997-2005
4	# Herbert Xu <herbert@gondor.apana.org.au>. All rights reserved.
5	#
6	# This code is derived from software contributed to Berkeley by
7	# Kenneth Almquist.
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	# 3. Neither the name of the University nor the names of its contributors
18	# may be used to endorse or promote products derived from this software
19	# without specific prior written permission.
20	#
21	# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22	# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23	# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24	# ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25	# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26	# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27	# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28	# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29	# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30	# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31	# SUCH DAMAGE.
32	#
33	# @(#)pushd 8.2 (Berkeley) 5/4/95
34
35	# pushd, popd, and dirs --- written by Chris Bertin
36	# Pixel Computer Inc. ...!wjh12!pixel!pixutl!chris
37	# as modified by Patrick Elam of GTRI and Kenneth Almquist at UW
38
39	pushd () {
40	SAVE=`pwd`
41	if [ "$1" = "" ]
42	then if [ "$DSTACK" = "" ]
43	then echo "pushd: directory stack empty."
44	return 1
45	fi
46	set $DSTACK
47	cd $1 \|\| return
48	shift 1
49	DSTACK="$*"
50	else cd $1 > /dev/null \|\| return
51	fi
52	DSTACK="$SAVE $DSTACK"
53	dirs
54	}
55
56	popd () {
57	if [ "$DSTACK" = "" ]
58	then echo "popd: directory stack empty."
59	return 1
60	fi
61	set $DSTACK
62	cd $1
63	shift
64	DSTACK=$*
65	dirs
66	}
67
68	dirs () {
69	echo "`pwd` $DSTACK"
70	return 0
71	}