The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 1 | # $NetBSD: dirs,v 1.7 1995/05/11 21:31:08 christos Exp $ |
| 2 | # Copyright (c) 1991, 1993 |
| 3 | # The Regents of the University of California. All rights reserved. |
| 4 | # |
| 5 | # This code is derived from software contributed to Berkeley by |
| 6 | # Kenneth Almquist. |
| 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. All advertising materials mentioning features or use of this software |
| 17 | # must display the following acknowledgement: |
| 18 | # This product includes software developed by the University of |
| 19 | # California, Berkeley and its contributors. |
| 20 | # 4. Neither the name of the University nor the names of its contributors |
| 21 | # may be used to endorse or promote products derived from this software |
| 22 | # without specific prior written permission. |
| 23 | # |
| 24 | # THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| 25 | # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 26 | # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 27 | # ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| 28 | # FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 29 | # DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 30 | # OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 31 | # HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 32 | # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 33 | # OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 34 | # SUCH DAMAGE. |
| 35 | # |
| 36 | # @(#)dirs 8.2 (Berkeley) 5/4/95 |
| 37 | |
| 38 | # pushd, popd, and dirs --- written by Chris Bertin |
| 39 | # Pixel Computer Inc. ...!wjh12!pixel!pixutl!chris |
| 40 | # as modified by Patrick Elam of GTRI and Kenneth Almquist at UW |
| 41 | |
| 42 | pushd () { |
| 43 | SAVE=`pwd` |
| 44 | if [ "$1" = "" ] |
| 45 | then if [ "$DSTACK" = "" ] |
| 46 | then echo "pushd: directory stack empty." |
| 47 | return 1 |
| 48 | fi |
| 49 | set $DSTACK |
| 50 | cd $1 || return |
| 51 | shift 1 |
| 52 | DSTACK="$*" |
| 53 | else cd $1 > /dev/null || return |
| 54 | fi |
| 55 | DSTACK="$SAVE $DSTACK" |
| 56 | dirs |
| 57 | } |
| 58 | |
| 59 | popd () { |
| 60 | if [ "$DSTACK" = "" ] |
| 61 | then echo "popd: directory stack empty." |
| 62 | return 1 |
| 63 | fi |
| 64 | set $DSTACK |
| 65 | cd $1 |
| 66 | shift |
| 67 | DSTACK=$* |
| 68 | dirs |
| 69 | } |
| 70 | |
| 71 | dirs () { |
| 72 | echo "`pwd` $DSTACK" |
| 73 | return 0 |
| 74 | } |